JPS6182205A - Arrival signal discriminating method of mobile microcomputer, and its device - Google Patents

Abstract

PURPOSE:To eliminate a noise and to decide an arrival signal by sampling odd times a signal which has arrived at a port of a microcomputer, and deciding it by a majority. CONSTITUTION:In one chip microcomputers CPU1, CPU2, sampling groups SP1-SP5 are formed by sampling an arrival data, for instance, five times each. Subsequently, 'H' and 'L' are determined by a decision by majority of the sampling groups SP1-SP5, also 'H' and 'L' are determined by a decision by majority of the generation frequency of 'H' and 'L', and an arrival signal is determined.

Description

[Detailed description of the invention]

[Industrial Application Field 1] The present invention prevents noise from being superimposed on the input of a vehicle-mounted microphone 1-1 compressor, causing the microphone 1-computer picoater to misjudge its own signal, causing malfunction. The present invention relates to a method and apparatus for determining an incoming signal of a vehicle microphone. [Prior Art] Generally, it is desirable that the wheels and rollers of an automobile be located close to the driver's seat. However, as cars in the 4th century have become more and more sophisticated, controllers have become more diverse, and controllers that can be used without losing the driver's posture even when driving automatically. There was a huge need for questions. Therefore, the pad portion of the steering wheel is spouted at a location closest to the driver's bT9, and at a location that is easier to operate. However, if a transmitter (such as a hand control unit) is installed on the pad of the steering wheel,

[In order to do so, due to mounting issues, it is necessary to use a very simple structure for the transmitting device (41, etc.) (-j), and the stationary parts facing each of the rotating parts of the steering wheel. In some cases, it is necessary to cover the wiring that connects the receiving device, which is a part, in the cylinder, and in some cases, it is necessary to use a large number of surrounding contacts, and there are problems such as reliability. In order to solve this problem, the following steps 2i 71 to 1 [1-la are known. The system includes an operating section that generates an operating signal in response to manual operation from the outside, and an operating section that outputs an operating signal), and responds to the signal by manually controlling the operating section.
The binary parallel encoded signal is converted into a serial data signal by a generator, and the binary parallel encoded signal output from the signal generator is converted into a serial data signal and sent to the receiving device (1: the serial data signal to be transmitted). A transmitting RtiW having a data transmitting section disposed in the steering wheel 11 to the wheel of the automobile, and a transmitting RtiW that receives the serial signal and receives the serial signal.
a serial data receiving unit that converts into a hex-parallel encoded signal;
a receiving device installed on the vehicle body side, such as a control unit that decodes the signal converted by the serial data receiving unit and outputs a corresponding control signal to each Akubuko; the transmitting device; and the receiving device. It consists of a power supply line and a serial data transmission line that connect the FIG. 34 is a block diagram of a known controller described in -. The control of this scale [J-RA] is roughly divided into a transmitting device 1 provided on the steering wheel, a receiving device 5 provided on the vehicle body side, power supply lines 9 and 11 connecting each of the two, and a serial data transmission 1! 1110. It consists of a transmitting device IL↓, an operating section 2, a signal generating section 3, and a serial data transmitting section 4. The power supply for these devices is
This is carried out from the vehicle battery 12 via the power supply lines 9 and 10. The transmitting device 1 is provided in a pad portion of a steering wheel. The operation part 2 is an automatic return type pusher. Button switch, dial switch, photo-in = 5
- A device that generates an electrical bind-off in response to an external manual operation f+ such as an optical switch using a Kusui-1 is used. The signal generating section 3 is connected to the operating section 2 and has the function of generating a binary parallel encoded signal according to the operating state of the operating section. Generally, it can be composed of an encoder or the like. The serial data sending unit 4 has a function of converting the binary parallel 3+1 encoded signal into a serial signal and then sending the signal to the receiving device 5 via the serial data transmission line 10. Generally, a parallel-serial converter or the like can be used. It is also possible to configure the signal generating section 3 and the serial data sending section 4 in a computer, especially a one-chip microcomputer. The receiver 11 device 5 is installed on the vehicle body side. The receiving device 5 includes a serial data receiving section 6, a control section 7, and the like. The serial data receiving section 6 receives the serial signal from the serial data transmission line 10, converts it into a binary parallel encoded signal, and outputs the signal to the control section 7. The control unit 7 decodes the parallel encoded signal, and the specified acji]T
− Outputs control signals to perform specified control of the controller −
I'm on the right side. Serial data receiving section 6 and control section 7 tJl: May be configured with individual digital circuits, and may integrate serial data receiving section 6 and control section 7, etc.]
pump coater, especially 1 chip micro-1 pump coater
[・Can also be configured. The Akujiko T-ta nY8 is intended for all other actuators such as radios, ``A'' and ``Boo'' devices, and O1 to drive equipment. The power supply lines 9 and 11 and the serial data transmission line 10 are made by arranging a plurality of conductive wires in parallel, making a tape-shaped electric wire with elasticity v1 by wrapping them together with synthetic resin, and steering the tape electric wire. It is formed by winding it loosely in a spiral around the shirt, and connects the transmitter and receiver stations. Since the tape electric wire is loosely wound in a spiral around the shirt 1, it can also follow the rotation of the steering wheel by -1 minute. Furthermore, direct connection without using a sliding contact or the like prevents noise from entering. [The invention solves the problem L)] However, the above [1]-L has an operation part installed on the steering wheel side, and sends the signal of the transmitter Bi to the receiver neck on the vehicle body side. Because of the current situation, IFi is affected by impulse noise frequently generated by ignition systems such as automobiles, chattering during switching, or wireless 1m.
J: The transmission signal sent out by the transmitting device P7 by the radio Vli l 1 etc. (this noise is superimposed, and the receiving device F'J
On the other hand, the receiver converts the received signal to the control signal without being able to determine that noise is superimposed on the receiver, resulting in a cohesive malfunction. Therefore, the present invention is designed to remove noise superimposed on the transmission signal and extract only the original signal component, thereby reducing the τ of the incoming signal. The present task is to provide a method and device for determining incoming F3 signals. [Means for solving the problem 1] The incoming signal discriminating device of the in-vehicle microphone [1] amplifier of the present invention detects the signal arriving at port 1 of the microphone l-I II impi-ta by its pulse. (a) a means for sampling an odd number of times according to the width; The system is constructed by means of subtracting the value of both counters from the value of the counter.1.By configuring it in this way, the signal arriving at the port of the microcomputer is sampled in odd numbers, and the input signal is It is possible to determine the signal that arrives at the port by majority vote of the sampling values of Furthermore, if the majority decision based on the sampling described above is performed an odd number of times and the signal arriving at the port is determined based on the majority decision, the incoming signal can be determined with high reliability. [Embodiment] FIG. In Figure 31, which is a block diagram showing the overall basic configuration, the pad side refers to the pad part in the center of the steering wheel, and the transmitting microcomputer CPLJ 1 is housed in the pad part. The vehicle body side means the fixed side excluding the part that responds to the rotation of the steering wheel, and examples of this include the steering column and the Datsushiko board on the driver's seat side. For example, the transmitting microcomputer CP tJ 2 on the vehicle body side is housed in the dashco board. The transmitting microcomputer CP tJ 2 is the same one-piece microcomputer 1. MP
]-ta, specifically the MB 8850. One-chip microphone 1-1] The configuration of the pump coater is well known and is not directly related to the gist of the present invention, so a description thereof will be omitted. In addition, hereafter, microcomputers, etc., are referred to as pump microphones [1] computers, microcomputers [112], unless otherwise specified.
There are also computers called one-board microcomputers. Figure 2 shows pad side micro=1 amp coater CPU-10
FIG. 3 is a circuit diagram showing the connection state of each port of 1, and FIG. 3 is a perspective view of the main parts showing the arrangement of the switch group on the pad side and the display BT. In the figure, a switch 81 constituting a key matrix
-S9 are, for example, O1, which is set to a predetermined medium speed during driving to control constant vehicle speed running. , car radio power switch S4, AM/FM tuning switch S5,
These are a polycomb up switch S6, a volume down switch S7, and a temperature down switch S8 and a temperature down switch S9 of the near conditioner (hereinafter simply referred to as air conditioner) controller. In this embodiment, other switch groups can be controlled in the same way, so their description will be omitted. Moreover, the same type of switch as that known in the art can be used. The objects to be controlled according to the present invention are not limited to the auto drive controller, air conditioner, etc. of the above embodiments, and the objects can be increased. There are some things that can be changed by 4 depending on the A-drive control 1]-A switch operation
-1~ While driving, the PO is intruding on the output capo-1.
(11-1 novel) °', the base current flows through the resistor r18Li that constitutes the display drive circuit, and the 1-transistor Q3 turns on, and current flows through the resistor rlQ, so the auto drive display OD river emits light. The diode is Ia
Light up. J: When PO goes to output capo-1 (high level), transistor Q3 turns off and 1-
The light emitting diode for t-drive display OD turns on. The drive display OD to the above 1 is the microphone on the vehicle body side [1]
It is controlled by a signal from the pump coater CPU2. Similarly, the outputs of the output capos 1-00-07 are connected to the display signal from the microphone 1-1 on the vehicle body side and the CPU 2, and the outputs of the former resistors r18 and R19 and 1- A specific light-emitting diode of the display group 21, such as a corresponding light-emitting diode, is lit up and displayed through a display drive circuit 20 consisting of a plurality of circuits similar to the transistor 03 and the like. This type of display drive circuit is not limited to the circuit of this embodiment, and any known interface circuit may be used. In addition, the input/output port R1 is connected to the microcomputer CP.
Send the output signal of U1 to the signal transmission line 31inc,
The signal of the microcomputer CPU2 is transmitted through the signal transmission line 3.
Through Line, you will be guided to the I/O Capo]/RO. That is, when port R1 is 118 II, the potential at the connection point between resistor r11 and resistor r12 rises, and resistor r13 lowers the base potential of transistor Q1 by -L, so transistor Q1 turns on and signal transmission is completed. Line 5 is ll
1-II, and conversely, when baud 1-R1 is L'', the signal transmission line 5line becomes 11HII.Then, the signal on the signal transmission line 31ine becomes H due to the signal from the microcomputer CPU2 on the vehicle body side. When ``, the potential at the connection point of resistor r171ff; resistor r16 and resistor r15 rises to turn on transistor Q2, so baud 1 to RO are set to ``1-'' by transistor Q2.
becomes. Also, the signal (] of the signal transmission line 31ine is
When the transistor Q2 is low, the resistance r
14"; port RO roars "'l-1". The circuit for switching the transistors Q1 and Q2 constitutes the input/output circuit 22, and a known circuit called an interface can be used. The transmission and reception timings of baud 1 to R1 of the input/output circuit 22 and port RO are set by a program described later. Also, the constant voltage power supply circuit 23 receives a power supply led from the vehicle-mounted valve brake 5, etc. via the power supply line 1) line,
It consists of a known constant voltage power supply circuit that provides a stabilized constant voltage, and its output voltage VC1 will be described later.
p It is the same or approximately the same voltage as the output voltage VC2 of the constant voltage power supply circuit on the LJ 2 side. Earth side power line [1in
e, the platform for the car body ground may be 19 from the car body ground, but in order to reduce noise, the ground side power line rli
Preferably, ne is used. A four-pronged dog tie connected to baud 1-R3 and port R3T? (Watcl+ dog tim
er) 24 is for detecting abnormalities in the hardware of the microcomputer CPU1.
- When the P LJ 1 is normal, it is reset at a specific timing, but if it does not receive a ret signal at a specific timing interval, it is determined that there is a hardware abnormality. It is. Ceramic oscillator X connected to terminal x1 and terminal x2
The circuits 1 and 2 constitute a well-known pulse generation circuit having a predetermined frequency such as CO1 and CO2. In addition, the input/output port R2 is later)! The power supply voltage VC1 is derived due to the software used in J-1. Here, the orientation configuration of the switch group and display group on the pad side equipped with the above-mentioned circuit configuration will be explained. In the figure, the microcomputer CP tJ 1 is
As can be seen from the part of the pad main body 30 shown in FIG. 3, it is attached to the printed circuit board 31. The pad body 30 is generally placed in the center of the steering wheel 35 and is disposed at the bottom of the boss portion 41. On the surface of the pad body 300, a switch pad 33,
Switches F and Y3' which are not circuitized in this embodiment
l and output ■Display panel 38, display group 39 for displaying various control states, and switch AT described in IIF+
S 1 to 89, etc. 1. Next, we will explain the signal transmission means of the non-rotating pad part of the steering wheel to which the above switches and sprays F and Y are distributed. Fig. 4 is a configuration diagram showing an example of the bend-down transmission I!I+ path between the pad part of the steering wheel and the vehicle body side. As it rotates, it rotates 77
This figure shows a steering wheel with a non-rotating mechanism. In the figure, the steering wheel 35 is
17) Tighten and secure the steering wheel to L'll. On the other hand, a fixed center gear 43 (not shown) is provided at the upper end of the steering column (not shown), and a stationary gear 44 is provided at the upper end of the boss portion 41 of the steering wheel and is rotatable with the steering shaft 40. The stationary gear 44 supports the pad main body 30 shown in FIG. Planetary gears 45 and 46 are rotatably provided, and the fixed gear 43 and the stationary gear 4
4 and planetary gears 45 and 46, rotation of the steering wheel 35 rotates the steering shaft 40, but the structure is such that the static 11° gear 44 is not rotated. That is, when viewed from the steering shaft 40, the static gear 44 is constructed to rotate in the opposite direction to the rotation of the steering wheel 35 and remain stationary. Signal transmission between the pad side and the vehicle body side is performed by a tape electric wire 47 formed by molding the signal transmission line 31ine with elastic plastic resin. This tape electric wire 47 is spirally wound and installed inside the stationary gear 44 and the fixed gear 43. Therefore, when the steering wheel 35 is rotated 1, the tape electric wire 47 is inserted into the fitting hole of the electric wire support disk 48 and /I9 and the boss part 41 with a length of Jζ, passed through the fitting hole with a length of Rotate the electric wire 47! As the handle rotates, it is always rotated by being tightly wound in a spiral shape or wound loosely. Where is this? ), the fitting holes of the wire support disks/'18 and 4 and the boss portions 41 (:I:
Tit and body and 41 move, so it's a fitting hole phase! It is possible that a deviation occurs in the signal transmission line 5l.
There is no need to cut the ine. Next, the specific circuit configuration on the vehicle body side is explained using the circuit diagram shown in FIG. 5 which shows the connection state of each port of the microcomputer CPU2.
and connected to terminal A and X2, respectively, are the same as those constituting the microphone pulse generation circuit. J: Also, the constant voltage IT power supply circuit 55 is the same as the constant voltage ff power supply circuit -18 = circuit 23 on the pad side, and is connected to the ignition switch IG/
When the SW is turned on, the power is supplied from the on-vehicle battery 57. Therefore, the battery 57 is connected to the constant voltage power supply circuit 2 on the pad side via the power supply line pline.
3 also supplies power. As described above, the output voltage VC2 of the constant voltage power supply circuit 55 is the same or approximately the same voltage as the output voltage Vc1 of the constant voltage power supply circuit 23. Terminal VSS
to (the ground potential is led to the microcomputer) -
The controller 1 and the CPU 1 are electrically connected to each other via a power supply line Fline or by connecting directly to the vehicle body. Note that in FIG. 5, the watch dog timer 26 shown in FIG. 1 is omitted for convenience of drawing. Microcomputer CPU 2 input/output port RO
is the output of the microcomputer CPU2 on the vehicle body side,
Port R1 is the microphone on the pad side [l-1 amp coater CP
This is used to input the output of LJ1. The input/output circuit 25 is composed of resistors r21 to r27 and transistors Q11 and Q12, and its circuit behavior is similar to that of the input/output circuit 22 of the microphone 1-1]. h When RO becomes 11", transistor Q11 turns on and transmission line 31
inO becomes 11+1. Conversely, when RO becomes 11111, the transmission line S+tne becomes '11' and 1.'cl. Also, due to the output of the microcombiner t-/ICP U l, the transmission line 5linO becomes 11111. When I II, transistor Q11 turns on and the microphone []]]
] Baud 1-R1 of On-2-ta CPIJ is I L 11
On the contrary, when the transmission line 5line becomes "-", the board 1-R1 becomes "]--". Control of the car radio 56 is performed as follows from the viewpoint of the microphone CPU 2. When the output of the port Q5 of the microphone [1] amplifier CPU2 becomes "TODO", a voltage is applied to the resistor r29 via the resistor r28, the transistor Q13 is turned on, and the power switch Pow of the car radio A is turned on. Bow 1-
When 05 becomes 'I-1', the resistance r30 as in the former case
, R31 turns on the 1-transistor Q14,
Set the car radio A tube to FM, and set the baud h06 to 1llll and AM. When the output of port 01 becomes II EI II, the channel scans and automatically selects a station. Once the channel is selected, the "I" signal arrives again and the selected station will not be changed unless the channel is selected. ,
Changing the audio output of the car radio is done as follows. When port P1 becomes "II", resistor r34 and resistor r35
The potential at the connection point increases, and transistor Q16 turns on. When transistor Q16 turns on, the potential at the connection point between resistor r36 and resistor r37 is increased, and
Turn on 7. A constant voltage V01 and OIN for the polycomb of the car radio are supplied to the resistors of the transistors Q1 to Q17, and the capacitor C10 is charged via the diode D1 resistor r38. The potential of the capacitor C10 is applied to the gate of the field effect transistor FET, so that the field effect transistor FET converts it into the magnitude of the voltage drop across the resistor r44. The voltage of the resistor r44 is led to the polycomb terminal VOLIN of the car radio 56, and the car radio'A56 outputs the voltage according to the magnitude of the voltage drop (vl). When port (]0 becomes 'II', transistor Q18 is connected by resistor r39 and resistor r40.
is turned on, and the transistor Q19 is turned on by the resistors r41 and r42, dropping the cathode side of the diode D2 to the ground potential J. Therefore: ] Ndensa C1
The charging voltage of 0 is discharged through the resistor r43, the diode D2, and the transistor Q19, lowering the charging voltage of the capacitor 010, and reducing the voltage drop of the resistor r44, thereby changing the audio output of the car radio 56. be able to. J--1-drive controller 54 is microcontroller L
, -t-ICPtJ2 baud 1-00.01.02
gives control instructions. That is, when oO reaches "II", the connection potential between resistor r50 and resistor r53 rises, turning on transistor Q20, driving relay R1-1, turning on contact R111, and A'~1~~1. ~ Drive [1-Preset ra 54. When baud+-o i becomes 1 to V', transistor Q21
turns on, energizes relay R1-2, and contacts 1'<
Turn on L12, and turn on J-1-drive controller 1-port-ra54
Reset. When port 02 becomes "1", transistors 1 to Q22 are turned on, relay Rl-3 is turned on, and its contact R113 is turned on, and autodrive controller 54 is in the pre-set state. However, even when the auto drive is down due to stray electricity, it acts as a resume switch that pulls the auto drive into 1-t-drive again. The power supply of the air controller 53 is attached to the dashco board side (not shown), and is controlled to turn on and off there.When the port 03 turns 'II', the transistor Q23 turns on. , S1NO RL4 is excited, its contact RL14 is turned on, and the set temperature of the air conditioner is lowered. Also, port 0
When 4 becomes 'l-1'' and 4τ, transistor Q24 turns on, energizes relay ~R1-5, and its contact R115 turns on, raising the set temperature of ■Ayu 1.The set temperature stone is T An arbitrary temperature is set by turning up and down an up/down counter built in the controller 53.The temperature inside the car is detected by the hot stone sink ij-52, and the The A-D converter 51 converts the value into a digital signal and inputs it to the input ports 1 to R4 to R11.This information is transmitted to the pad side and displayed on the display. Microphone[]]Piconta Cl]
1. The input/output capo ir<2 of J1 was connected to the power supply voltage VCI side, but the terminal R2 of the input/output port of the microphone [] computer CPU 2 on the vehicle body side is set to the ground potential. In addition, the structure of the Darashi 1 board side, the relay circuit connected to the output cap of the microcomputer CP tJ 2, and the structure of the actuator used for mechanical control, etc., have been used in the past. Since the control system can be used as is, its explanation will be omitted. As mentioned above, the microcomputer CPU of this embodiment
1 and CP LJ 2 on the input/output side, auto drive controllers 1 to [1-RA, car engine controllers], displays, etc. are exemplified.
ll 24 - The object is not limited to the use according to the above embodiment, and an electric drive circuit, a relay circuit, etc. can be connected to the output port depending on the detection object of the input port of the microcomputer CPU1 and CI)C2. to control electrical output,
Furthermore, an actico I-tater or the like is connected to perform mechanical output control. The signal transmission device between the steering wheel and the vehicle body according to the embodiment of the present invention constructed as described above and the microcomputer control method of (a) will be explained below. First, an explanation will be given with reference to FIG. 6, which is a schematic diagram showing the basic pattern of the signal transmission method between the steering wheel and the vehicle body in this embodiment, and FIG. 7, which is a diagram showing the basic frame of the transmission signal.
Ru. When one of the pad side and the vehicle body side becomes the transmitting side 60 and the other side becomes the receiving side 62, a transmission signal is sent from the transmitting side 60 to the transmission line 5Line. The transmission signal consists of a basic frame as shown in FIG. The transmitting side 60 sets the output of the port R1 of the microcomputer to lL11, that is, the signal of the transmission line 5Line to '11', and sends out a refresh signal. On the receiving side 62, the baud 1-RO of the microcomputer becomes lll+. Then, it detects the arrival of the Riffnis1~ signal.Then, the microphone [1] input terminal on the receiving side 62 is put into the receiving standby state, and the start bit 4 bits of the signal (b i 1: ) are transmitted. Information type and 4 pits 1
port information of ~ and 8-bit CRC (Cy
clic redundancy check) =
] - Receive the code. Send message @6 at C1 step 63
If there is an error in 1, the microphone 1 on the receiving side 62 sends a NACK (Negal:ive
acknowledgment) signal to the transmitting side 60 microphone [
]] to request retransmission of the same transmission signal 61. 1 for error-free transmission signal 61! ? If
Depending on the content of the transmission signal 61, the actuator T is differentially set.
At the same time, it sends an ACK signal 66 to the transmitting side 60 indicating that the signal has been transmitted normally. Furthermore, regarding the basic frame 11 of the transmission signal, the 4 pins 1 to 1 of the information type are used to identify the type of each detection lens or switch using the 4 pins 1-, and the various detection sensors are 1 or sends information according to the switch type. For example, in the block diagram of FIG. 1 showing the basic configuration of the present invention, the information types are 3, R4-R7, and R8-R11.
Species information, r 1. -11-8.1, r l-1-LI
H'', r L HI-I HJ F Sot'L wo expressionre Rumo (7) F Do. Port information means the information therein. When the power switch S4 of the car radio of the microcomputer CP LJ 1 on the pad side is turned on, the type of information and the ball information signal are exemplified as follows: A signal r L Hl-I H,1, which scans R12 to port R15 with 4 bits, [I L Hl-I H,
1, r H111l-I J, r 1''l-I HI-
1 signal, port [<12 scanning verses only, port 1 to 1. ．． ''' is output, so the information type r L
The contents of Lm l-I J are the port information [ToI L HL
This means that it has changed to l-1. The Porto information is l”
L)-I HHJ-11-1-11-1j is transmitted as a uniquely determined code. After said signal, a c RC signal is sent. The CRC signal is specified by the information type and port information.
7. Adding a certain number of hits during the transmission of information (error detection HJ method, communication protocol 1-) is a well-known method, so the explanation of that method will be omitted. I'Ka3, Under J's, data, information type and bow 1
A CRC signal determined by information, information type, and baud 1 information, which means information excluding the 80 signal and NAC+ signal, and the transmission signal refers to the information transmitted by the basic frame. It means something. Transmission/reception microcomputer CPU 1 and CI)
The routine of jJ2 will be explained using the flowcharts shown in FIGS. 8 to 27. In this embodiment, a contention method is adopted as a method for mutually transmitting signals between the pad-side transmitting/receiving microcomputer CP (Jl and the vehicle body-side transmitting/receiving microphone "1") and the CPU 2. I will explain with an example,
When implementing the present invention, the present invention is not limited to the above-mentioned random selection method, and a polling/selection method may be adopted. The basic difference between the two is that according to the tension method,
When transmission is performed simultaneously from both microcomputers CPU 1 and CPU 2, a collision occurs on the -41 transmission path, and this collision is avoided by error control. When information changes, the information can be transmitted each time, which shortens the normal transmission time. On the other hand, in the polling/sensing method, collisions on the transmission path can be avoided by following the parent's call, but when information changes, the transmission time is slower than in the former method. Become. Therefore, when it is necessary to increase the processing speed of a controlled object, the ``intent'' method is advantageous, but when controlling a normal display or electrical equipment, the polling/selection method is used. be able to. Of course, the microcomputers C, P U 1 and C'P
Depending on the processing speed of LI2, the polling selection method can also be adopted for control objects other than those mentioned above. As mentioned above, the control of the computer CPU (microphone 1) and IJ (CF) IJ 2 shares the rough 1 to wear with the pad side and the car body side, and there is selectivity among these controls. are microcomputers CPU 1 and C
Is the input of port R2 of P U 2 at ``Tobi''?
The control method for the control method is selected by J: in l1l. FIG. 8 shows the main routine of one embodiment of the present invention. When the ignition switch IG/SW is turned on,
At step 100, the main routine of Tree-Noroji1/-1~ is r? Starting from rl, micro w at step 101:
/e' Coater CPU 1 and CPU 217) ~, initialize the flag and RAM. In step 102, the microphone [+Tlt,:"-1-
When the input of port R2 is 'I+', it is determined that the pad side is being controlled, and when it is 'L', it is determined that it is the control of the vehicle body, and the step At 103.104, time limit T1 or T2 is set to each reception standby timer. Said ll:ll limit 11
and □ Time limit T2 is TI < T2, but the time limit T1 on the pad side and the time limit T2 on the vehicle body side are as follows: When the ignition switch IG/SW is turned on, the microphone [1 computer CPUI and CP LJ2 Since the raccoon stray electricity is constant, the microcomputers CPU 1 and CP IJ 2 may simultaneously output signals 1 to 1 to the signal transmission line 3l-inQ. At this time, in this embodiment, a priority selection determination timer is used to prioritize one information transmission and wait for the other information transmission, and in this embodiment, [, LTl < T
2, and the information output from the pad side is given priority over the information output from the vehicle body side. Then, in step 105, a retransmission counter is set to 7. This 7 is an instruction to repeat the transmission of the same signal from the transmitting side up to 7 times if a transmission error occurs due to the name 91I of the signal transmission line 5line or the like. Therefore, the retransmission counter is set to 1? I7 is not limited to this, and the value can be set to any value. At step 106, the ``1'' and 11 L of port R2 are again
11, when port ``K2'' is 'N', step 108 says ``Pad side data output program, call 1 + J pull ~ Dichin rule parameter [11] to RAM.
Sera 1 ~, port R2 is 11 L II, and in step 107 the data on the r body side is output.
RA parameter [91]
Sera 1 to M. After instructing the predetermined data output 1-1 gram, the port 1-RO is set to “11” in step 109.
``or L'', and when no request signal arrives at port 1 to RO, the input is ``11'', so
9 and 10) performs the predetermined rib routine call parameter analysis in [1-chart]. When the baud 1~RO is equal to 11+1, it means that the other party is transmitting a request signal, so the subroutine of step 110 is executed at this time and the message ``The receiving program J is processed. When the refresh 1~ signal has not arrived at the RO, the subroutine call parameter is set to [-1] by transferring it to the RAM in step 131 to the slurry block 111. If it is 01, it enters the process of "normal reception program [1 gram]" in step 112, and
If it is not 0-1, the process proceeds to step 113, where it is determined whether the leave routine call parameter is "1" or not.
1-1, step 114 enters the process of "abnormal reception block program, l". Similarly, subroutine call parameter "2", step 116, "ACK reception program J, 4Y blue-gin"-rule parameter. "3
1, the ``NΔCK reception program'' in step 118 is executed, and when the subroutine call parameter is ``51'', the ``ACKtlf program j'' in step 122 is executed, and when the subroutine call parameter is ``6'',
When the subroutine call parameter is "7", the cK output program j is called "transmission program J" in step 126.
, subroutine call parameter [8,1, step 128 "Pad side reception standby program", leave routine call parameter "9,1, step 130 r vehicle body side data output program j, subroutine" - When the parameter is “10”, step 13
2. Select the vehicle side reception standby program 1j and perform the processing of the blue routine 1 according to the user's blueprint parameter. Normally, the initial settings for the ``libroutine'' parameter are
At step 107 or step 108, press 7 on the vehicle side.
．． In the case of the microcomputer CPU 2, the subroutine call parameter ``41'' is stored in RAM. - Unless there is a request signal, the microcombi CPU 2 on the car body side enters step 130's ``car body side data output [1 gram 1 processing], and the pad side micro Combi-1-ta CP L
J1 executes step 120 in step 119 and enters the pad side data output processing [lgram, data]. Usually, just before step 109, port R is
RQ I-t1 micro]ampicoater 0 [] U1 and C
Constant detection is performed on hardware 7 of PtJ2. Next, 711-ch sl-t of the W pad side data output program j in FIG. 11 will be explained. “Pad side data output 1” selected in step 129
] Gram I is first stored in R for data storage in step 150.
Initialize AM. Deshi-C, step 15j
1, the transmission completion flag is in the state of 1-'', that is, the processing of its own old data has been completed, and the transmission completion flag is 1-1, and the transmission process is currently in progress. , then in step 152 the subroutine call parameter "7" that calls the "("-blue routine of "sending program J") is set.
" is set in the RAM and the transmission is completed. Step 1
When the transmission completion flag of 51 is “defective”, step 15
3 determines the status change of 3 to 4-bit port KO~,
When there is a state change, in step 154 Po1-KO~
1. Enter the status of 3. Also, in step 153, when it is confirmed that 31 states have changed in the ports, in step 1; When there was a change, Poe 1
- Input the status of R4 to R7 IJru1, step 155
If no state change can be confirmed in Po+-R4・~R7, in step 157, it is determined whether the state 111 change in Po1~QB-・1te11 of 4 Pitsu I~ is correct, and the same as the former is performed. In step 158, when the status change 11.1 occurs, the status of ports 8 to R11 is input. Sfutubu 15
If you cannot confirm the status change of -b 1~[-to/[ri11] at 7, use Sudet J161 to set the 'pad side ■ data output turn [-1g, !l's subroutine call parameter [41 to II In other words, the micro combination cork CP on the pad side (in J1, always connect ports 1 to 1 <0~, 3, R4 to R7 to port 1).
, changes in the status of ports 1 to R8 to R11 will be monitored. If there is a change in status in any of them, slap 15/I or step 156 or step 158'
(), and create a CRC code specified by the information type and port (~ information) according to the information type and port information in A. The above GRC code is used in the calculation. However, if the information type and information is small, storing it in memory and calling it sequentially will make the processing speed faster than expected. Once the information type, port information and CRC: ]-code are determined, the subroutine call parameter "7" of the "sending program" is set in the RAM in step 160. ] gram, ] flowchart 1 to 1. Since the "vehicle body side data output program 1" is approximately the same as the "pad side data output program j17) process" shown in FIG. 1 When the processing of the data output program j on the vehicle body side starts, first, in step 200, the RAM required for it is initialized.In step 201, the state of the transmission completion flag is determined. ``Transmission program [-1] 8.l reload] - Read the parameter ``7'' to RAM. In step 202, the transmission completion flag becomes ``l''. <0~1ku3, s”j Tsubu 20
5 'c' baud 1114-R7 (7), step 207
At step 211, a change in the state of the port [<8.~R11] is determined, and if there is no change in the state, the output routine for "data output for the car side [1 gram]" is executed. 1 to the RAM and the state change is constantly monitored. Said port Iku0~l<3, port1~R
When a state change occurs in any of R8 to R11, step 204 corresponds to the state change.
Alternatively, in step 206, select port 1-1<0-3, port 1-R4-R7, port]・R8
Input either signal to or R11. In step 209, a code is created according to the input signal, and in step 210r:
13 and 14 C, t, V send program [1 gram j].
Flowchart 1~. When the "transmission program" is entered in step J126, the transmission program [kΔM] is initialized in step 250. Then, port RO is '
+1". Since the RO is "1-B, which means that there is a transmission from the phase f side, in step 252, the "transmission program,"] is determined. Reset the lib routine] - parameter 7 in the rfRAM and wait for -C1 reception to be completed. Bow 1-R
When O becomes "'I+", in step 253 port R1
for a predetermined period of time ``1-'', that is, transmission line S'1ine'
1"" and send a request signal. After that,
In step 254, turn port 1-R'l to 'I+' for a predetermined period of time, and transmit star 1-pi 1~.When the start bit is transmitted, in step 255, the transmission signal is changed to the transmission signal address h counter to count 1. Up and take out, step 2
56, the pins 1 to 1 of the selected transmission signal address are 'I'.
+" or L" is determined, and if it is 11 HII, 1" is transmitted in step 258, and if it is 12 F]7 M", "'l" is transmitted. This operation is repeated in the 16-bit transmission of the basic frame of this embodiment. When the information of 3, 16 bits 1 to 61.C is repeatedly transmitted, it is determined by the flag 1259.
At step 260, a signal is sent to the final pin 1 at the end of the signal when the transmission of 1 Gbit information is completed. Step 26
When the transmission of the transmission signal is completed by returning the port RO to 'I+' in step 1, the slot 262 and step 263'c,
Transmit! , :Transmission A judgment signal to determine whether there was a CK signal 6-(+, NΔCK signal 43, or a data signal. If it is determined in step 262 that it was an ACK signal, the process proceeds to step 262. At step 26B), it is determined whether or not the completion flag is "11", and the transfer 1.
When the 1 completion flag is 'II', it means that the subsequent transmission g is on the white side IZ-right, and the transmission completion flag is '1'.
``Nodoki, the next transmission screen J is a warning to the self.''
1st taste l) Eye 5, the transmission completion flag is l L II, the speed is 1-1 and 2 is
” or “1°’, 11 EI When 11, S)
Tube 271 Y: lr Pad side data output block [1 Gram 40= Subroutine call parameter ``4'' of program 11 is stored in RAM
To! 7tsu 1~shi, “When Llj, Sufu” - Tsubu 27
2, set the 1st knob loop call parameter [91 to RAM of the "vehicle side data output program l\"] To 1, port KO~ to 3, Bo! Go to R4/R7, Bow 1 to R8
- Monitor new status changes of R11. Ii, when the transmission completion flag is '+1', the time limit τ1 required for the other party to decipher the ACK signal sent by these parties is determined in step 269, and if the time limit τ1 has elapsed. performs the same control as when the transmission completion flag is "'1". Also, step 263c: If the content of the transmitted transmission signal is NA
If it is determined that CK is the signal, step 265
own ficrocomputer CPUI or CPU'
2 determines whether it is on the pad side or the vehicle body side, and N A
If it is a CK pewter transmission, the data is transmitted again from the other party, so in step 266 or step 267, the "pad side reception standby program program" is set to blue routine call parameter [81, or r middle side receiving device. Subroutine call bar of program J 41 = Lameter ``101 is stored in RAM 1?Ts1~η.
Both the ΔACK signal and the NACK signal in step 262 and step 263 correspond to i, and the transmitted data "J content is the content associated with the change in the state of the port." Since it means 1-, ((1
A'GK letter 1) from Ding, NACK letter received (-
Press 'I+' on Unley Flage to confirm that it is in the state of 'I+'. Figure 16 “Vehicle side receiver unit [1g]”
) 11-B 17-1- will be explained. 1 Rib Routine - 1 - Parameter r81T", "Pad Side Receiver:
:Holding machine B1 Gogram 1 is r? When A v is sent to Sera 1, Slurtub 300 displays the message "Pad side reception standby - 10G\1", the time limit T1 of the reception wiping timer has elapsed. The data from the pad side must be sent to the platform that sent the communication from l-S1 to the vehicle body side, and the I/O device also records the elapsed time that has been set to be sent first.
Step 3: Before passing the limit T1,
01, again set the routine call parameter ``8'' of ``pad side reception 14111 program []] program 42 = program'' to ``
Sera 1~ and main program state 1109
As long as ports 1 to RO are not set to "1-", the time limit T1 of the reception standby timer continues to elapse. If port 1 to RO are "1-" in step 109, the "receive program 1 leave routine" is entered. If it is determined in step 300 that the time limit T1 of the reception standby timer has elapsed, step If the unley flag is "II" in step 302, that is, the transmission signal is data, the retransmission counter is counted down by one in step 303.The count value of the retransmission counter is determined in step 304, and the count value of the retransmission counter is determined in step 306. When the count value of the retransmission counter reaches 4, the (J-
Load the blue tin call parameter "7" into the RAM and transmit the data from the melon pad side. When the +i'l count of the Fr sending count reaches O, the slap 305 writes the subroutine call parameter "4" of the pad side data output program lXj to the RAM, inputs new information to various ports 1, and restarts conduct. Sfutu/302r If the unley flag is "l-"r, it means that the data content is 80. Therefore, in step 307, 1 [pad side data output [1 The subroutine call parameter "4" of program j is set to r<A M 1.11t=tsu1, a new y'-all signal is transmitted, and new information of various ports is input. - On the other hand, in step 131, the blue routine parameter [10] is stored in the RAM, and according to the contents of the parameter, in step 132, the vehicle side reception standby program I] is set. The time limit T1 of the reception standby timer is judged to have elapsed in the T knob 350, and it is determined that the time limit T1 of the reception standby timer has elapsed (step 35).
1 'P If' Φ body side reception 1) 11 program [1 Gram J's leave routine call parameter [101] to RAN4, main routine sub 10 determines the state of port Ro, and returns port RO. When No. 155 arrives at request 1 at 'l-', step 11
0 r reception block [-1 grams, enter processing of I. Port R
When the state of O is 1-bi, 111 Yoshi, step 1-44
= 32 "Vehicle side reception standby block [-1 gram"] 1) - Proceeds to execution of routine. Then, when the time limit T1 of the reception standby timer has elapsed, it is determined in step 352 whether the Unley flag is "H" or 1-II, and when the Unley flag is "H", the transmission signal is This means that there was data associated with a change in the state of the port, so in step 353 the retransmission counter is set to 10,000 un1.
Then, the t1 value is determined in step 354. When the value of the retransmission counter is not 0 in step 353, a slap 356 causes the ``transmission program, seven leaf routine'' parameter ``7'' to be written into the RAM, and the data is transmitted again. When the count value of the retransmission counter reaches O, in step 355, the "vehicle side data output program program \, leave routine of 1" - le parameter "
9" to RAM 1, and inputs the data contents accompanying the state change of the transmitted port in writing and new information for each port 1-, and then reloads the data. Also, if the answer flag is '1'' in step 352, the transmitted data content is NA.
After transmitting the CK signal -45 = Zuru, in step 357 r vehicle side data output turn 1]
Gram, l's 1J-Blue routine call parameter ゛"91" is entered from 7 to 1 to input new information in order to send a new data signal.In the explanation so far, in step 109 of the main routine, port RO 'l-1'', but
While the request signal is being sent from the other side, port RO is at "L", and regardless of the type of subroutine, when the routine is over, step 109 of the main routine is always executed. 17 to 21 show the reception block [1 gram, 1 of )l
Two l-day? It is -1. In step 110, processing of the subroutine of 1 received 111 grams is started. First, in step 400, port 1-R is processed.
Look at 2, microphone ``1'' computer CPU 1 or Lt.
Determine whether CP IJ 2 is on the pad side or the vehicle body side. In this embodiment, as in No. 1 above, the pad-side tar 46 = now set to the time limit of the reception standby timer - [set 1 to the timer on the vehicle body side] - smaller than 2 The microcomputer CP LJ 2 on the vehicle body side is set to the slurry tube 401, and the microcomputer 7 on the pad side CP 1. In step 402, in J1, a cell I- is performed. ``Reception block [] graph 11,
1, the reception standby timer is set to time limit 1-1 or time limit -1 again.
-2 is set [3L] If the transmission operation is performed even once, the time limit of the reception standby timer set in step 103 or step 104 of the main routine may have become shorter or elapsed. , each reception standby timer has an initial setting of time limit T1 and time limit T2.
After completing the initial setting of 02, in step 403, 7 is added to the retransmission counter. This set 7 is ``sending program', 1 to 1. (
< Matches the number of retransmissions t! It is something that Then, in step 404, the RAM for receiving signals from Riffnis1 to -r is initialized. Furthermore, in step 405, the sampling number setting counters Δ0, Δ1, A and ROlBl, +3 are set to set the number of samplings for checking the request l-shintan's 'L'. ,
In step /I06, whether Paul l-RO is “'II” or l L
II, and proceed to step 109' of the main routine.
Either the port t-Ro's II L-TI that I judged was the riff 1-su l-IN father, or there was a slight noise on the Riku T strike signal Y] and a 'H' roar, and it went to Riku 1. In order not to stop treating it as a signal, step 1 to [<00 human power status [(1 view, 1, that is, step 1 to determine whether port 1-r<0 is "'II" or it Lu In step 406, it is determined that the output is "L", and in step 407, the counter A is
O is incremented by one count, and when "II" is reached, the sub-f sub 408 increments counter A1 by one count. Step 4091
'Insert counter A. Then, in step 410, the number of judgments in step /106 is repeated until the number of judgments in step /106 reaches 5 times.
This lean pulling number is limited to 5 times'cl
;L'/'c<, You can set it as you like depending on the usage mode. When the number of judgments in step 406 reaches 5 in step 410, the size of η1 is compared with counter AO and counter A1 in step /111.
Is the signal being received at port RO “1”?i L
n, the count value of counter AO and counter A1
The decision will be made by majority vote based on the number of words. When the count value of counter AO is greater than the count value of counter Δ1,
This means that there are many occurrences of "H", and the counter BO is incremented by 1 in step 412. Conversely, when "'H" occurs frequently, the counter 81 is incremented by 1 in step 413. Then, the number of comparisons between the counter AO and the counter A1 in step 411 is determined by the slur tab 7114.
Counter B overturns the KI number. The number of comparisons between the counter AO and the counter A1 is determined in step 415, and the process is repeated until the number reaches five. At this time, in step 416, a predetermined lean-pulling time interval τ2 is set between the five samplings of the number of words J in the counter A (hereinafter referred to as the 4th combining group) and the sampling group. Repeat the 4J numbering group 5 times using the counter [3 for the number of words. In general, automobile noise (J occurs due to discontinuous high frequencies η
Therefore, the number of sampling and sampling groups is limited to three times.
< , the majority decision is due to the reduction in decision-making), and it is easy to make a decision.
3. It is preferable to do the same for odd numbers of sea urchins. However, considering the processing time of the microcomputer and the probability of noise occurrence,
If the sampling group of 5 times is repeated 5 times, it is possible to judge whether or not the signal of PO1-RO is a signal of the RIPT signal. This is due to the fact that the signal to ST1 is longer than the normal data transmission (J), and the confirmation time for each is 11 minutes. In step 415, the counter 13 becomes 5 and the judgment is reversed, and in step /117, the counter BO's hl number candy counter [31 is compared with the number of words 1111 17, II
Occurrence of L II? ! In humans than in the outbreak group where Y is '11'.
If so, it is determined that riff 1 through signal g have arrived, and in step 419 it is determined that a start bit has arrived. Also, L 1
When the occurrence group of ``1'' is smaller than the occurrence group of ``I+'', there is no corresponding signal, so in step 418, the 1 node routine of the 1' regular reception program'' - rule parameter ``1'' is set.
is stored in RAM, and the lr Tatsumi regular reception program is loaded. When the start pitch 1~ arrives, in step 420, the counter Co for setting the lean-bringing number of start pitch] is set.
, C1, and C are cleared. Then, in step 421, it is determined whether the port RO is Patvi or 1-'',
When port 1-RO is 'I-1', counter CO is incremented by 1 in step 422, and port RO becomes '1'.
-'', the counter C1 is incremented by 1 in step 423, and the number of times of judgment in step 421 is increased by 1 in step 423.
4 makes counter C 1 count 1 hair, and this judgment is 3
[! The count value of the counter CO is compared with the M value of the counter C1, and the count value of the counter CO, that is, I -51=nl value of "-1" is the shadow 1 value of counter C1, that is, II l
- It can be determined that there are 4 small throats than the 81 ships of TI, Star 1 Heavitsu 1 ~ Signal, so in step 427, "Tatsumi regular reception program 1 - 1 Gram J's 1 na band] - Lu parameter [
11 to the RAM, and select "1 gram,"
]-le. When the 81 number 11Fi of the counter CO is greater than the value of the counter C1, the arrival of the start pitch i- is detected. 1 hump ring is entered for each pin 1 to @ of data transmission. At step 428, the data hit 4 non-pulling count setting counters l')0 and Dll) are cleared, and at step 429, po 1 to RO are '11'. Is it in the state “1-”?
determine whether the situation is 1 non-pulled po 1
~ When the state of RO is "[" slow, step 430T: Counter DO is incremented by 1, and "H" is reached, and counter D1 is incremented by 10,000 1-7 in step 431. In step 432, the number of RO judgments is accumulated in counter D. Then, the state of the humbled port RO is repeated three times, and when counter D reaches 3, it is accumulated in step 433.
I'll definitely compare the word value of counter DO and the count value of counter D1 at that time in step 43/l, and if the value of shadow 1 of counter I) 0 is smaller than the count value of counter D1. , the slur tab 436 sets a predetermined bit “
1fi of counter DO becomes counter D1.
, the predetermined bit is identified as L' in step 435. Then, this is performed for 16 bits of the total number of bits of data. In step 437, it is determined whether or not 16 bits have been completed.
When the 16 bits are completed, a CRC is performed in step 438, and when an abnormality is recognized, in step 439, the subroutine call parameter of "abnormal reception program J" is set to "1" in the RAM, and "abnormal reception program J is set to 1". If no abnormality is recognized in the CRC, it is determined in step 440 whether the received data is a NACK signal, and if the received data is a NACK signal, in step 444 1f of rNAcK reception program 1 is detected. Set the pull parameter [31 in RAM,
1N80 to receive program j. In step 441, ΔCK (If it is determined that it is the M number, in step 442, if'A, CK reception program' rerun parameter [2] is set to
12 to AM, lr ACK received program
]-le Mru. Then, the NΔCK signal and the ACK signal (
When it is determined that there is no data, the received data is
This is because the data content is received due to a change in the state of the port.
In step 443, the ``normally received progera l\11 rerun'' parameter ``0'' is stored in the RAM as 21,
Figure 22 shows the normal reception block [1 gram J flowchart 1].
− is. When you enter the r normal reception program J on the slur tube 112,
In step 450, it is determined whether the transmission signal is information of port KO~3, and when the information of port 1 is 0~3, in step 451, it is output from ports PO~P3 and drives a predetermined actuator. , do the display. If there is no information on port KO~3, it is determined in step 452 whether the data content is information on ports R4~R7.
In step 453, the information from ports R4 to R7 is outputted from ports 1-00 to 03 to drive a predetermined ACUBUCO and display it. Furthermore, port R4~
When there is no information on R7, in step 454, port 1-
Determine whether the information is from R8 to R11, and select Port1-R8.
~ When the information on R11 is received, port 04 ~ in step 455
Similarly to the former case, the information is outputted by the actuator and display. When the target data is transmitted from any of ports PO to P3, ports 00 to 03, and ports 04 to 07 by the actuator or display in steps 451, 453, and 455, an IrACK output is output in step 457. RA subroutine call parameter "5" of program j
Setshi to M, do Nab-chinkoru. Also, in steps 450, 452, and 454, port KO~3, port R4/-R7, port 1~R8~F<
When it is not determined that the information is 11, step 456 outputs "INΔCK" [1 gram, 4 knob loop of j]
- Set the file parameter [6] to II A M 1 and perform the 1st routine]. Figure 23 shows lr A CK output [] Durham 1, 2nd
4 figure is lr N A CK output turnip [1 gram 31 flowch A? It is -1-. In step 122, "△CK output [1 gura l\J] -
If so, step 500 'r predetermined ACK main 1! In step 5)01, create a CRC code to be added to the ACK message, and in step 50
At step 2, the subroutine call parameter ``71'' of ``transmission program []gram\'' is written to the RAM, and the [transmission program 1]gram is executed. Mata, IrNΔCK output cuff n'1 at Suf'7bu 124
7 ram j]-, a predetermined NA is set in step 550.
7.4 in step 551
1, and in step 552 create a C[<C:]-code to be added to RAN4]? 1. Click ``Send Program, I''. FIG. 25 Let v abnormal reception program, 1 f[1-
It is a chart. When the i' Tatsumi normal reception program J is T1-ruled in step 114, the unreliable flag is set to 'H' in step 600.
If the answer flag is ``R1'', it means that the reception of the AQK signal or NACK signal is abnormal. ni [tsu l-t
, , makes a subroutine call. Also, if the answer flag is "L", it means that the reception of the state change information of the port C is abnormal, so in step 602, the subroutine call parameter "6" of the IAcK output program j is stored in the RAM.
Set I and make a subroutine call. FIG. 26 is a flowchart of the 1rAcK reception program j. Since the CK reception program J is called in step 116, which means that the data transmitted by the other party has been received, in step 650, the AN1 NO flag is cleared, and at the same time, in step 651, the transmission completion flag is cleared. Then, use Stella 1652 to select between the pad side and the corpuscle side, and Pau 1-R2 is "l-1" (7
) and Kistera-7'' 653 FW Hat side data output turn [1 knob routine] - parameter [41 to RAM] and performs a subroutine call. FIG. 27 is a flowchart of fNACK reception program 1.1.
If the answer is received, it means that the other party has received the data sent from the sender as sufficient information. Program, V of i
Routine 1 Set the parameter "7" to RA.M, and run the 1 transmission program J for transmitting again. A summary of the main routine and subroutines described above is shown in time blocks ν-1 to J and as shown in FIGS. 28 to 33. FIG. 28 shows the normal transmission ff, 'f time check VI-l-, and when a change in the state of the input port on the pad side occurs, the pad side Then, the pad side data is transmitted, and the car body side executes the ``reception program, I'' and ``normal reception program'', and outputs an output according to the change in status. Then, IACK output [1 gram] and "sending program,
ACK that the data has been received without error.
(, lj month is sent to the pad side. Figure 29 shows time charts 1 to 'C' during abnormal transmission: When data sent from the pad side cannot be received accurately on the car body side, 1rNAcK output from the car body side. "1gram" and "transmission program J send a NACK signal to the pad side (iEL,, receive the NACK signal). On the pad side, the ] - and resends A and I), and the vehicle receives the resent data incorrectly.
i'ACK output 11-1 Gram j from the car body side and ``-59= △ C1〈 Send Y to the pad side by the sending program 11.
. Figure 30 shows the timer foot when the signal is being heard at 80.
The pad side receives the data sent from the car body without error, and the pad side sends an ACK signal to the car body to indicate that the data was received without error. If it is not transmitted, use the error reception program to select ``transmission error'' and return N.
The vehicle body side (now - sends the stone data to the pad side.The pad side that received it sends an I'ACK output [1
ACK by Gram, ■ and "Sending Program, 1"
Send a signal Iha 1-ru a <Z Now, the first data is J, and the pad side outputs J according to that data.
One (7 Kubu 1L-Evening Drive Ma 1, :Display r
However, the signal from the 80 on the pad side was not transmitted to the car body.
In order to confirm, the same data is received again, and 7 Kuji 11
Figure 31 [1, NA0] <Data hX sent from the vehicle body side at the constant timer 1~ of the transmission Y3. ``When the pad side cannot receive data without error, the NAG from the pad side
KK signal is sent back to the vehicle body. However, if the NACK signal is not received without error, the "abnormal reception program" causes the data to be retransmitted. Figure 32 is a time chart when three types of state changes occur on the pad side. During this process, if there is an input from the car side, the ``car body side reception standby program j'' executes the r pad side data output program j and the ``transmission program j'', and the car body side Following the A, G and K signals, data is transmitted from the vehicle side,
When the pad side receives the transmission data, it transmits the A and GKK signals to the vehicle body side, and then transmits the remaining data to the vehicle body side. FIG. 33 shows the timing 1p-1 when request signals are simultaneously transmitted from the pad side and the vehicle body side. When the request signal is sent to the pad side and the vehicle body at the same time, it is during the processing of the transmission program 1 routine. ``1 gram'' or ``Vehicle side reception standby block [1 gram J processing begins.
Since the time limit T1 on the pad side is set shorter than the time limit [2 on the car body side, the pad side first starts executing the "transmission program" by the "pad side reception standby program".
Along with this, the car body enters the 4-knob routine of reception program J. Data transmission on the pad side is completed, and the time limit -
``After 2, data from the vehicle body side can be transmitted next. Therefore, the pad side is given priority for transmission. In this way, in this embodiment, the processing of the r reception program'' is started. , the incoming signal is sampled five times in succession, and the result is determined by majority vote J: to determine whether the incoming signal is "tobi" or "'1".Then, the above five samplings are continued further. Repeat these steps until it reaches 5 times, determine the results by majority vote, determine the next result by majority vote, determine the incoming signal's p]bi' or 1M+, and make sure that the result is 'L'. '', it is determined that a request signal has arrived. That is, the pulse width of the request signal is such that after one microcomputer enters the processing of the leave routine of the sending program J, the pulse width of the other microcomputer is
Since the time is set to be equal to or slightly longer than the time required to enter the leave routine processing of the reception program 8I, the time chart (a ), when one microcomputer starts processing the receiving program J, it first performs numbering on the incoming signal five times in succession to create sampling groups SPI to SP5. 1 non-bringing group SP1-SP5
1-'' or 'l-1' for each occurrence, and then take a majority vote of the frequency of occurrence of these 'L' or '11',
It determines whether the incoming signal is 'I+' or '1-', and if it is '1-', it is determined that a request signal has arrived.As with this type of request signal, the pulse width is When determining the arrival of a long signal, based on the majority decision of the subsibling group performed an odd number of times, the 'H' of the resulting signal,
It is effective to determine the frequency of occurrence of 11 L-I+ by majority vote. That is, since the noses NOI to N05 that invade the transmission line for the middle wheel are mainly swarm 4T1), it is more effective than continuous sampling. The accuracy can be increased by increasing the number of samplings. Normally, 1 non-bling of the request signal is determined by the pulse width of the 1-stop signal, as shown in (a) or (b) of the enlarged incoming signal in Fig. 34. It is done within. However, when I looked at the signal on port R1 during the processing of the 1st ring of the microcombinator, I found that the 11th ring was delayed due to the noise NOI~NO5. Tadoki et al. is the 34th
As shown in (C) of the figure, sampling may not be completed the required number of times within the pulse width of the request signal. In this case, the request signal "l-" cannot be determined as many times as necessary, so the r abnormal reception block [1 gram J
and = 64-1rNAcK output program J requests the transmitting side to retransmit the data. Therefore, the "receiving program" always performs 41-sampling a necessary number of times to determine the incoming signal. To this end, the request signal and start bit signal are set oppositely to each other, and the pulse width of the start bit is the same as the pulse width of the start bit when the final sampling of the request signal is delayed. It is desirable to set the pulse width of the start bit so that the result determined by majority vote is 1. It is not something that is synchronized with
Since the processing is performed asynchronously, the 34th
As shown in (d) of the figure, the number of sampling times and the time required for star 1 bit and the number of sampling times and time required for each bit of data are different when the start bit is detected due to a slight time lag. It is necessary to set it so that the signal of each pin 1~ can be sampled accurately.
sampling SPI~SP5, star 1-signal 3 times 5P11, each bit of data 5x16 times (
1) IT BU IJ NK S P21~S P2O (
51136 (not shown), the "1-V' and "l i I+" are determined by majority vote, but in this embodiment, the number of samplings is determined based on the pulse width. . When implementing the present invention, the number of samplings is not limited to the above, and sampling may be performed an odd number of times depending on the pulse width. As described in 11, the present invention determines the number of samplings according to the pulse width of the incoming signal, so sampling is performed an odd number of times according to the length of the pulse width, and the results are judged by majority vote. The incoming signal can be determined by [Effects of the Invention] As described above, the present invention converts the signal arriving at the port of the microphone 1-1 amplifier coater into a pulse width of A = 66 on the window.
= There is a method that samples an odd number of times and determines the incoming signal by a majority vote of the sampled values, so if noise is superimposed on the incoming signal, remove it and extract only the original signal component. Since the received signal can be used as an incoming signal, the receiving side can perform control according to the content of the signal sent from the transmitting side, and malfunctions of the microcomputer output on the receiving side can be prevented. Another invention is to sample the signal arriving at the microcomputer port an odd number of times according to its pulse width, and determine the incoming signal based on the majority vote of the 4y sampled values. The process is repeated an odd number of times, and the unity is determined by majority vote, so if noise is superimposed on the arriving signal with a good pulse width,
The longer the pulse width, the more likely it is that the noise can be removed and only the original signal components can be extracted as the incoming signal. This makes it possible to perform control such that malfunctions of the microcomputer output on the receiving side can be prevented. Historically, another invention was to transmit signals between the steering wheel and the vehicle body using the wireless system, and each microphone was placed on the smearing wheel side and the vehicle body side. The signal is non-blinked several times depending on its pulse width, and the incoming signal is determined by the majority vote of the sampled octopuses, so even if the signal transmission line between the steering wheel and the vehicle body is lengthened, Since it is possible to remove the influence of noise that enters there, and the receiving side can perform control according to the content of the signal sent from the transmitting side, malfunctions of the microcomputer output on the receiving side can be prevented. can. 4.Simplification of drawings 1i/'c;'tri VI11 1st
The figure is a block diagram showing the overall configuration of the transmission method between the steering wheel and the vehicle body according to the present invention. Figure 3 is a perspective view of the main parts showing the arrangement of the switch group and display group on the pad side, Figure 4 is a configuration diagram showing the signal transmission line between the pad part of the steering wheel and the vehicle body side, and Figure 5 is a diagram of the main parts. A circuit diagram showing the connection status of each port of the microcomputer on the vehicle body side. Figure 6 is a schematic diagram showing the basic pattern of the signal transmission method between the steering wheel and the vehicle body in this embodiment. Figure 7 is a basic diagram of the transmission signal. Figures 8 to 101 are flowcharts showing the main routine of an embodiment of the present invention;
The figure shows flowchart 1 of "pad side data output program j," FIG. 12 shows a flowchart of "vehicle body side data output program," and FIGS. 13 and 14 show a flowchart of "transmission program." FIG. 15 is a flowchart of the "pad side reception standby program j," FIG. 16 is a flowchart of the "vehicle body side reception standby program" 70-Tito-1~, and FIGS. 17 to 21 are flowcharts of the "reception program."
FIG. 22 shows "70-diets of normal reception program 1,
23 is a flowchart 1 to 1 of the output program j to f, AC, FIG. 24 is a flowchart of the r N , ACK, output program, and FIG. 1 Figure 26 shows IrACK reception 1 reception button], Figure 27 goes to flowchart 1, Figure 27 shows normal transmission. Time of Thailand 18 yat, Figure 29 tit ra regular transmission 11 yen (
7) Tie to chip p -1, Figure 30 shows 80 K signal abnormality time chart]~, Figure 31 shows GK signal W to N.
Regular time check +7-1~, Figure 32 shows time check 1? when three types of state changes occur on the pad side. -1~, 3rd
Figure 3 shows the timing relays 1 to 1 on the platform where request signals are sent simultaneously from the pad side and the car body side, Figure 34 shows the incoming signal enlarged and sent to IC timer 1, and Figure 35 shows the steering wheel and car body. A conventional example of the signal transmission method between
Fig. 79. In the figure, 30...Pad body, 35...Steering wheel, 47...Tape wire, Q1-Q24...Ransistor, r1-r59...Resistor, 5line...Signal transmission line, CP LJ1...Microcomputer for pad side transmission/reception, CPU2...Microcomputer for vehicle body side transmission/reception. In addition, in the figures, the same reference numerals and the same symbols indicate the same or equivalent parts. Patent Applicant Flexible Synthesis Stock Trial Attorney Patent Attorney + lff1 ri Wushang Tokkai Show G1-
82205 (29) Parameter 7 Go to Fig. 23 and Fig. 24.

Claims (6)

[Claims] (1) In a microcomputer mounted on a vehicle, a signal arriving at a port of the microcomputer is sampled an odd number of times according to its pulse width, and an incoming signal is determined by a majority vote of the sampled values. A method for determining incoming signals for an in-vehicle microcomputer. (2) A microcomputer mounted on a vehicle samples a signal arriving at a port of the microcomputer an odd number of times according to its pulse width, and determines the incoming signal based on a majority vote of the sampled values. A method for determining an incoming signal for an on-vehicle microcomputer, characterized in that the process is repeated an odd number of times and the result is determined by majority vote. (3) A signal transmission device between the steering wheel and the vehicle body that uses a contention system by connecting the transmitting/receiving microcomputer located on the pad of the steering wheel and the transmitting/receiving microcomputer located on the vehicle body side using a transmission line. Incoming signal determination for an in-vehicle microcomputer, characterized in that the signal arriving at the port of the microcomputer is sampled an odd number of times according to its pulse width, and the incoming signal is determined by a majority vote of the sampled values. Method. (4) Means for sampling a signal arriving at a port of a microcomputer an odd number of times according to its pulse width, a counter for counting the type of signal obtained by the sampling for each type, and a counter for counting for each type. 1. An incoming signal discriminating device for a vehicle-mounted microcomputer, characterized in that an incoming signal is determined by majority vote using means for subtracting a value of a counter. (5) The incoming signal determination method for a vehicle-mounted microcomputer according to claim 1, 2, or 3, wherein the microcomputer is configured as a one-chip microcomputer. (6) The incoming signal discriminating device for a vehicle-mounted microcomputer as set forth in claim 4, wherein the microcomputer is constituted by a one-chip microcomputer.