JP2625766B2 - Composite control system for vehicle with external storage device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a control system that requires a low-speed data transfer such as an air conditioning control system, and a control system that requires a high-speed data transfer such as a map display control system. More particularly, the present invention relates to a vehicle composite control system suitable for changing control contents in response to a change in storage data from an external storage medium via an external storage device.

(Prior art)

Conventionally, in this type of vehicle complex control system,
Some control systems require a high-speed data transfer, such as a map display control system, and some control systems that require a low-speed data transfer include an air-conditioning control system and a seat control system.

[Problems to be solved by the invention]

However, in such a configuration, when the storage data from the external storage medium is transferred to the microcomputer of the map display control system or the microcomputer of the seat control system via, for example, the microcomputer of the air conditioning control system. In this case, the transfer of stored data is always delayed by the time via the microcomputer of the air conditioning control system. Therefore, such a delay in transfer does not hinder the low-speed control of the seat control system, but hinders the high-speed control of the map display control system and impairs smooth map display. On the other hand, it is conceivable to transfer the storage data to the map display control system at a high speed, but in such a case, the storage data must be transferred to the seat control system at a high speed. However, as a result, the configuration of the transfer circuit becomes unnecessarily complicated, resulting in an increase in cost.

In view of the above, the present invention has been made to address such a problem, and in a vehicular complex control system, without providing an unnecessary transfer circuit, the storage data from an external storage device to a control system that requires high-speed data transfer. At a high speed, and transfer of stored data from an external storage device to a control system that requires only low-speed data transfer at a low speed.

[Means for solving the problem]

In solving such a problem, the structural features of the present invention include, as illustrated in FIG. 1, a first control system 1 that requires high-speed data transfer, and at least two second control systems that are sufficient for complaint data transfer. System 2 and external storage medium
3a, when the output storage data from the external storage device 3 is high-speed transfer data for the first control system 1, the same output is performed. First transfer means 4 for directly transferring storage data from the external storage device 3 to the first control system 1; and low-speed transfer of output storage data from the external storage device 3 for one of at least two second control systems 2. A second transfer means 5 for transferring the same output storage data to one second control system 2 via the other of the at least two second control systems 2 when the data is data.

(Effects)

Thus, by configuring the present invention in this way,
When the output storage data from the external storage device 3 is the high-speed transfer data, the output storage data is transferred to the first transfer unit 4.
Is transferred directly to the first control system 1, and when the output storage data from the external storage device 3 is the low-speed transfer data, the output storage data is transferred to the second control unit 5 by the second transfer means 5. Since the data is transferred to one of the second control systems 2 via the system 2, an external storage device is provided at each transfer speed required for each of the first and second control systems 1 and 2 without an unnecessary complicated transfer circuit. 3 to the first and second control systems 1 and 2 in a timely and reliable manner.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 shows a composite control system for a vehicle according to the present invention, and the composite control system includes an air conditioning control system Sa.
And a map display control system Sb and a seat control system Sc connected to the air conditioning control system Sa, and an external storage device Sd connected to the air conditioning control system Sa and the map display control system Sb.

The air-conditioning control system Sa includes an air duct 10 provided in the vehicle. Inside the air duct 10, from the outside air inlet 11a and the inside air inlet 11b to the air outlet 12, an inside / outside air switching damper 13, a blower 14, evaporator 15,
An air mix damper 16, a heater core 17, and an outlet switching damper 18 are sequentially provided. The blower 14 is connected to the air duct 10 from the outside air introduction port 11a or the inside air introduction port 11b via the inside / outside air switching damper 13 according to the rotation speed of the DC motor 14a.
Introduce an air flow into the evaporator
The cooling action in 15, the actual opening of the air mix damper 16,
Under the heating action of the heater core 17 and the switching action of the outlet switching damper 18, the air is blown out from the outlet 12 into the vehicle compartment 10a of the vehicle.

The temperature setter 20a sets a desired temperature in the vehicle interior 10a and generates a set temperature signal. The internal air temperature sensor 20b detects an actual temperature in the vehicle interior 10a and generates an internal air temperature detection signal.
The outlet temperature sensor 20c detects the actual temperature at the outlet of the evaporator 15, and generates the detected temperature as an outlet temperature detection signal. A / D converter
30 is a set temperature signal from the temperature setter 20a,
The internal temperature detection signal from 0b and the exit temperature detection signal from the exit temperature sensor 20c are converted into first, second, and third digital signals, respectively.

The microcomputer 40 executes the air conditioning control program in cooperation with the A / D converter 30 according to the flowchart shown in FIG. 3, and during this execution, controls the servo motor 50 connected to the air mix damper 16. Perform necessary arithmetic processing. The microcomputer 40
Executes the transfer control program in accordance with the flowcharts shown in FIGS. 4 and 5, and during this execution, the arithmetic operations necessary for each control of the seat control system Sc, the map display control system Sb, and the external storage control system Sd are performed. Perform processing. However, the above-described air conditioning control program and transfer control program are stored in the ROM of the microcomputer 40 in advance. The execution of the transfer control program is started in response to an interrupt request to the microcomputer 40 from the external storage device Sd.

The map display control system Sb includes a microcomputer 60. The microcomputer 60 executes a map display data reception control program in cooperation with the microcomputer 40 and the external storage device Sd according to a flowchart shown in FIG. During this execution, arithmetic processing necessary for directly receiving map display data from the external storage device Sd is performed. Further, the microcomputer 60 executes a map display control program based on the received map display data according to a flowchart (not shown).
The map display control system Sb performs an arithmetic process necessary for displaying the target map. However, the above-described map display control program is stored in the ROM of the microcomputer 60 in advance. The map display data reception control program is executed by the microcomputer 40 from the microcomputer.
Triggered in response to an interrupt request to 60. The interrupt input port, input / output port, and ground terminal of the microcomputer 60 are connected to the interrupt output port, input / output port, and input port of the microcomputer 40 via an interrupt request line La, an I / O line Lb, and a ground line Lc, respectively. Connected to ground terminal.

The seat control system Sc includes a microcomputer 70. The microcomputer 70 executes a seat control data reception control program in cooperation with the microcomputer 40 according to the flowchart shown in FIG. The arithmetic processing necessary for receiving the seat control data from the storage device Sd via the microcomputer 40 is performed. Further, the microcomputer 70 executes a seat control program based on the received seat control data according to a flowchart (not shown), and performs an arithmetic process necessary for controlling a seat of the vehicle during the execution. However, the above-mentioned seat control program is the RO of the microcomputer 70.
It is stored in advance in M. The execution of the seat control data reception control program is started in response to an interrupt request from the microcomputer 40 to the microcomputer 70. Note that each interrupt input port and ground terminal of the microcomputer 70 are connected to each interrupt output port and ground terminal of the microcomputer 40 via each interrupt request line Ld, Le and a ground line, respectively.

The external storage device Sd includes an IC card reader / writer 80 and this
An IC card 90 is inserted into the IC card reader / writer 80. The IC card 90 has a ROM 91 and the ROM 91
And the output port 93 connected to this CPU 92
The ROM 91 stores map display data or seat control data in advance. The CPU 92 converts the storage data from the ROM 91 into serial data, outputs the serial data, and provides the serial data to the port 93. The output port 93 is connected to the input / output circuit 81 of the IC card reader / writer 80 when the IC card 90 is inserted into the IC card reader / writer 80, and receives serial data from the CPU 92 according to the reading operation of the IC card reader / writer 80. The input / output circuit 8
Assign to 1.

The IC card reader / writer 80 uses its input / output circuit 81 to
Connected to each input / output port of both microcomputers 40 and 60 via I / O line Lb, interrupt request lines Lg and
The microcomputer 40 is connected to an interrupt input port, a power supply terminal, a clock output port, and a reset terminal via a power supply line Lh, a clock supply line Li, and a reset line Lj, respectively. Thus, the IC card reader / writer 80 performs arithmetic processing necessary for each arithmetic processing of both the microcomputers 40 and 60 through the respective connection lines as described later. The input / output circuit 81 is also connected to the ground terminals of the microcomputers 40 and 60 via the ground line Lc.

In this embodiment configured as described above, if the vehicle is in a running state with its ignition switch closed and the combined control system is in an operating state, in the air conditioning control system Sa, the microcomputer 40
Are activated, the constant voltage circuit generates a constant voltage Vc, and the clock circuit sequentially generates a clock C at a predetermined frequency. In such a case, the frequency of the clock C is a value suitable for air conditioning control. Also,
It is assumed that the IC card 90 is released from the IC card reader / writer 80.

Then, the microcomputer 40 determines that each clock C
, The execution of the air conditioning control program is started in step 100a in accordance with the flowchart of FIG. 3, and in each of steps 110 to 130, the first to third digital signals from the A to D converter 30 are output. Based on this, the required blowing temperature of the airflow into the vehicle compartment 10a and the target opening of the air mix damper 16 are calculated, and this target opening is generated as an opening output signal. Then, the servomotor 50 adjusts the actual opening of the air mix damper 16 to the target opening in accordance with the opening output signal from the microcomputer 50, and maintains the actual set temperature in the passenger compartment 10a.

In such a state, when the IC card 90 is inserted into the IC card reader / writer 80, this IC card reader / writer
80 issues an interrupt request to the microcomputer 40 through the interrupt request line Lg. Then, the microcomputer 40 becomes
According to the flowchart of FIG. 4, the execution of the transfer control program is started in step 200a, and in step 210, the constant voltage V
c is applied to the input / output circuit 81 of the IC card reader / writer 80 through the power supply line Lh, the clock C is applied to the input / output circuit 81 through the clock supply line Li in step 220, and the reset signal R is applied in step 230. Generates reset line L
It is given to the input / output circuit 81 through j.

Next, when the IC card reader / writer 80 is reset by the reset signal R from the microcomputer 40 to generate a reset response signal, the microcomputer 40
Receives the reset response signal at step 240 through the I / O line Lb. If the reset response signal corresponds to the map display data, the microcomputer 40 determines “YES” in step 250. That is, IC
Based on the determination that the card 90 is a map display data IC card, the microcomputer 40 requests the microcomputer 60 of the map display control system Sb to receive map display data through the interrupt request line La in step 260. Put out.

Then, the microcomputer 60 starts executing the map display data reception control program in step 300a according to the flowchart of FIG. 6 in response to the reception request from the microcomputer 40, and in step 310, the I / O line Lb
A request for transfer of map display data is issued to the IC card reader / writer 80 through the. Then, the IC card reader / writer 80 operates each clock C under the constant voltage Vc from the microcomputer 40.
The map display data in the ROM 91 of the IC card 90 in response to
When the microcomputer 60 sequentially reads the serial data from the I / O port 93 as serial data via the I / O line Lb of the IC card reader / writer 80, the microcomputer 60 reads the serial data from the IC card 90 in step 320. And receive them sequentially. In such a state, when the serial data becomes data representing a transfer end command, the microcomputer 60 determines "YES" in step 330, and in step 340, through the interrupt request line La, The microcomputer 40 notifies the end of the transfer of the map display data to the IC card reader / writer 8 in each of the steps 290a and 290b (see FIG. 4).
The application of the constant voltage Vc and the clock C to 0 is sequentially stopped.

As described above, when the IC card 90 inserted into the IC card reader / writer 80 is a map display data IC card, the serial data read from the IC card 90 is:
Since the data is directly transferred to the microcomputer 60 without passing through the microcomputer 40, the transfer of the map display data from the external storage device Sd to the map display control system Sb can be performed at a high speed without providing an unnecessary high-speed transfer circuit. Can be achieved. Therefore, the execution of the map display control program by the microcomputer 60 based on the map display data from the external storage device Sd is quickly realized, and the display of the target map in the map display control system Sb can be performed smoothly.

If the reset response signal generated from the IC card reader / writer 80 responds to the seat control data as described above, the microcomputer 40 proceeds to step 250 (fourth step).
Is determined as “NO”, and the transfer control program proceeds to the seat control data transfer routine 270. Then, the microcomputer 40 executes the seat control data transfer routine 270 according to the flowchart of FIG.
At step 271, a request to receive seat control data is issued to the microcomputer 70 of the seat control system Sc through the interrupt request line Ld. Then, in response to the reception request, the microcomputer 70 starts executing the seat control data reception control program in step 400a according to the flowchart of FIG. 7, and in step 410, interrupts reception of the seat control data. The microcomputer 40 is notified through the request line Ld.

Then, the microcomputer 40 executes step 272.
(YES in FIG. 5), and in step 273, a transfer request for seat control data is issued to the IC card reader / writer 80 through the I / O line Lb. As a result, the IC card reader / writer 80 sets the constant voltage Vc from the microcomputer 40.
Then, in response to each clock C, the data stored in the ROM 91 of the IC card 90 (that is, the seat control data) is sequentially read out as serial data from the input / output port 93 via the CPU 92. At 274, IC
Serial data from the card 90 is sequentially received through the input / output circuit 81 and the I / O line Lb of the IC card 80, and is determined to be “NO” in step 275, and the serial data is determined in step 276 as an interrupt request line. The data is transferred to the microcomputer 70 through Le, and in response to this, the microcomputer 70 receives the serial data in step 420 (see FIG. 7).

During the repetition of the execution of the seat control data transfer routine 270 through the steps 273 to 276 and the execution of the seat control data reception control program through the steps 420 and 430, the microcomputer 40 receives the serial data received from the IC card reader / writer 80. When the data becomes data representing the transfer end command, the microcomputer 40 determines “YES” in step 275, and accordingly, the microcomputer 70 determines “YES” in step 430. After the determination of "YES" in step 275, the microcomputer 70 advances the seat control data transfer routine 270 to step 290a (see FIG. 4) and subsequent steps through step 270b.

As described above, when the IC card 90 inserted into the IC card reader / writer 80 is a seat control data IC card, the serial data read from the IC card 90 is transmitted to the microcomputer 70 via the microcomputer 40.
Without any extra transfer circuit,
Transfer of seat control data from the external storage device Sd to the seat control system Sc is different from high-speed driving of map display data,
Can be achieved at low speed. Accordingly, the execution of the seat control program by the microcomputer 70 based on the seat control data from the external storage device Sd is realized at a low speed, and the seat control in the seat control system Sc can be appropriately performed.

In implementing the present invention, a microcomputer
If the frequency of clock C from 40 is variable, IC
The reading speed of the data from the IC card 90 by the card reader / writer 80 can be made variable, and as a result, the transfer of the map display data to the map display control system Sb or the transfer of the seat control data to the seat control system Sc can be performed. The speed can be variable.

In the above embodiment, the composite control system is
Although the example configured by the air-conditioning control system Sa, the map display control system Sb, the seat control system Sc, and the external storage device Sd has been described, the present invention is not limited thereto.
The present invention may be applied to any combination of systems that require high-speed transfer and low-speed transfer of data according to the number and type of these systems.

Further, in the above-described embodiment, the data required for the arithmetic processing of the microcomputer 60 based on the map display control program or the data required for the arithmetic processing of the microcomputer 70 based on the seat control program is transferred from the external storage device Sd to the microcomputer 60. Alternatively, data representing the map display control program or data representing the seat control program may be transferred from the external storage device Sd to the microcomputer 60 or 70.

[Brief description of the drawings]

FIG. 1 is a diagram corresponding to the configuration of the invention described in the claims, FIG. 2 is a block diagram showing an embodiment of the present invention, and FIGS. 3 to 5 show the operation of the microcomputer of the air conditioning control system. FIG. 6 is a flowchart showing the operation of the microcomputer of the map display control system, and FIG. 7 is a flowchart showing the operation of the microcomputer of the seat control system. Description of the symbols Sa: air conditioning control system, Sb: map display control system, Sc: seat control system, Sd: external storage device
40,60,70 ... microcomputer, 80 ... IC card reader / writer, 90 ... IC card.

Claims (1)

(57) [Claims] A first control system requiring high-speed data transfer; at least two second control systems sufficient for low-speed data transfer; and an external storage device for outputting storage data from an external storage medium. In the hybrid control system for a vehicle, when the output storage data from the external storage device is high-speed transfer data for the first control system, the output storage data is directly transferred from the external storage device to the first control system. First transfer means for transferring the output storage data from the external storage device to the at least two second control systems when the output storage data is low-speed transfer data for one of the at least two second control systems. And a second transfer means for transferring the data to one of the second control systems via the other of the two. A composite control system for a vehicle comprising: