JPS5821994A - Fault monitoring system for remote control system - Google Patents

Abstract

PURPOSE:To avoid the discontinuation of the system function, by facilitating the detection for the area of a short circuit and then cutting off the short circuit area from the system. CONSTITUTION:For the monitor terminals 31... for signal transmission, the channel (address) is set within a prescribed channel (address) range among all systems. These terminals 31... have the same constitution of circuit as the control terminals 21... and transmit the reply signal when the transmission signal of the corresponding channel given from a central monitor device A is received. At the same time, the switch means r11, r12... are controlled. These switch means are turned off if no prescribed voltage is obtained due to the reduction of impedance of a signal transmission line.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an abnormality monitoring system for a remote control system that remotely controls a load using multiplex transmission.

Conventionally, this type of system saves wiring by forming the signal transmission line with multiple lines such as two lines and transmitting the transmission signal by time division multiplexing, but if the signal transmission line is short-circuited, signal transmission is impossible. There was a point at point X where the entire system stopped working. Point X was that it was difficult to detect abnormalities in a system that had signal transmission lines spread over a wide area.

An object of the present invention is to provide an abnormality monitoring method for a remote control system that prevents the system from stopping its functions by isolating a connected point from the system.

Figure 111 shows a general block diagram of the present invention, and Figure 2 shows a detailed block diagram of the central monitoring equipment. This signal transmission line (+l) is branched from a proper location and extended in multiple directions, and a branch line (+l) is connected to each predetermined position.
41)... through the control terminals (21)...
Connect it. These control terminals (2I)...
Corresponding to K, the signal transmission line monitoring terminal (31)... is connected to the adjacent signal transmission line +11 position, and the monitoring terminal (3,)... is connected to a pair of semiconductors or relay contacts. One of the switch means r11.5rlt+... is connected to the corresponding control terminal (21)... and the branch line (4+
), 1. At the same time, the central monitoring device (A) or 1 is also located far from the connection point of the cough control terminal by inserting and connecting the signal transmission line (LLK). The device consists of a microphone ojo processor CPU, a memory unit (6) such as a P-ROM in which operating programs are written, and a memory unit (61) such as a νM for reading and writing data.
, interface II) for transmitting and receiving data between the operating section ()) consisting of the middle board and display section, etc. and the operating section ()) and the microprocessor CPU; The control data and address data by discrimination control are converted into a predetermined signal format and transmitted, and the return signal from the terminal side is sent to the microphone output.
It consists of a waveform generation circuit (9) that converts the signal into a signal format that can be captured and discriminated by the PU, and a transmission/reception coupling circuit (lφ) that connects the signal transmission line f1+ and the waveform generation circuit (9), and a microphone O''. jottsusa CPtJ 1 storage part (6
)', lsl, waveform generation circuit (9), interface (8), and operation section (7) are connected by a path line so that signals can be transmitted and received. Further, a short circuit detection means for detecting a short circuit due to a decrease in the impedance of the signal transmission line (1) is provided in the transmitting/receiving coupling circuit to constantly monitor the signal transmission line (1) for short circuit abnormalities.

However, in a state where no short-circuit abnormality is detected, the central monitoring device receives start signals, channel (address) signals,
Transmission signals consisting of control signals are sent to each control terminal (2I).
The signals are transmitted sequentially to cycle rough within the range of the Ajima channel allocated to ... via the signal transmission line +1+.

On the other hand, the control terminal (21)... is composed of a microprocessor, a waveform generation circuit, a storage transmitting/receiving coupling circuit, etc., like the central monitoring device, and receives the transmission signal input from the transmitting/receiving coupling circuit and channels it. Compare and judge the signal (address signal) and the channel (address) set by itself, and if they match, take in the control signal and control the load based on the control data, and transmit data on the operating status of the load as a signal It is designed to be returned to the central monitoring device prisoner during the return period set at the end of the file. The signal transmission line monitoring terminal (31)... is configured so that the channel (address) voice is set within a predetermined channel (address) range of the entire system, and the control terminal 11 (
21) It has a circuit configuration similar to..., and when it receives the transmission signal of the corpse channel from the central monitoring device prisoner, it sends a return signal and switches ru * r + t.
, . . . For example, if the intensity of the signal transmission line (1) decreases and a predetermined voltage cannot be obtained, the switch means rll, r□, . . . are turned off. I am told to do so.

Next, the operation of the present invention will be explained based on the flowchart shown in FIG. 113.

First, the system starts ■, and then the signal transmission line f1+
When there is a decrease in impedance, the short circuit signal generated by the short circuit detection means is detected by the central monitoring device (A).
Then, in the central monitoring device, the switch means r1+, rl! of the signal transmission line monitoring terminal (31), which are stored and set in advance, are switched on. -8・Contents of control dark “ON”
” to l” OFF J■. At this time, the impedance of the signal transmission @0+ is lowered due to the short circuit, and the switch means r++ s rl*-...1 of each signal transmission line monitoring terminal (3I)... are exhausted when returning to the off state in each case.

Next, the first channel of the signal transmission line monitoring terminal device (31) is set, and the central monitoring device shifts to operation using a printer for abnormality detection. First, when the first channel is stored in the storage unit (6), for example, in the rounded square that stores the set channel (hereinafter referred to as A square), the transmission of this designated channel is performed. The signal will be sent from the central monitoring device (8) to the signal transmission line +1+.In this case, in Fig. 1, the signal transmission line monitoring terminal (3,) corresponding to the first channel is connected to the central monitoring device (8). Since the signal transmission line (1) is quickly disconnected by the switch means rs, , r41 of the signal transmission line monitoring terminal (3g) (3,) connected to the device (8) side, the transmission signal cannot be received. , switch means flj, rat are not turned on and no return signal is transmitted.

In addition, the short circuit point is the signal transmission line monitoring terminal (3,) (
Since it is disconnected from the signal transmission line f1+ by the switch means r31%r□ of 34), the result of the judgment (2) in the central monitoring device as to whether there is a short circuit is rNOJ.

On the other hand, as described above, since no return signal is sent, the result of the determination (2) as to whether there is a return signal is "NO". If the result of this judgment is NOJ, the corresponding channel number is stored in the memory section (6) (hereinafter referred to as B measure). The channel number is erased from the A1 uplink, and the channel number is reset.0゜The preset channel number reset in the next step is preliminarily sent to the signal transmission line monitoring terminal (3I)...
A determination is made as to whether or not the channel is within the allocated channel setting range. If the determination is rYEsJ, the next step 0 is to determine whether or not the channel corresponds to the short-circuited part in the storage section (6) for storing the abnormal channel. ) memory (
If the judgment is "rNO", the re-set channel number is stored in the A1 uplink, and the transmission signal corresponding to the re-set channel is transmitted to the central monitoring device. It will be sent from (A). Now, when the transmission signal corresponding to the second channel in FIG. Since it is not turned on, there is no short circuit detection and no return signal. Therefore, this second channel number will also be stored after B, and the next channel will be set. Now, if the terminal for signal transmission line monitoring of the third channel (3,) is the terminal for signal transmission line monitoring at the position closest to the central monitoring equipment, then the transmission signal of the channel is When the signal is sent from (A), the signal transmission line monitoring terminal (
When 3,) receives the transmission signal, it takes in the control dark, turns on the switch means rll+ rat, connects the corresponding control terminal (2,) to the signal transmission line fl), and also stops the signal transmission after the switch means rffI. At the same time, a return signal indicating that the reception operation has been performed is sent to the central monitoring device (through the signal transmission line +I).
Return it to A). Therefore, the judgment result in step ■ is rY
ESJ, the channel number is not stored at 88°C, the process jumps to step 0, and the next channel is set. Also, the channel number stored in the A menu is retained. Now, when the transmission signal corresponding to the fourth child Janne I7 is sent out from the central monitoring device (A), the signal transmission line monitoring terminal (3,) of the third channel is the next closest to the central monitoring device prisoner. 4th signal transmission line monitoring terminal (3
, ) is the third channel signal transmission line monitoring terminal (
When the transmission signal is received through the switch means rz+ of the third channel, the terminal for signal transmission line monitoring of the third channel (
In the same way as in 3,), the return signal is sent back to the central monitoring device prisoner.

Now, the transmission signal of the fifth channel is transmitted to the central monitoring equipment (A
), the switch means rl+ of the signal transmission line monitoring terminal (32) of the second channel is not yet in the on state as described above, so the transmission signal is cut off quickly and cannot be received. , do not reply with a return number. Therefore, the company! At step 2, it is determined that the channel number is 1'-NOJ, and at step 2, the channel number is stored at 81°C. Here, if the channel range of the signal transmission line monitoring terminal (3,)... is l/-5th, the channel set in step ◎ is the 6th, and the judgment in step ■ is "NO".
”. When the "determination" becomes "NOJ", in step O, it is determined whether there are any reserved channels for which there was no returned signal.As mentioned above, the channels for which there was no returned signal exist in the 1st, 2nd, and 5th channels. Therefore, the judgment of the reply @ in such a step is l"YESJ, and the process proceeds to the next step O. In this step O, it is compared whether or not the memory contents at 81 degrees Celsius and the memory contents of the memory device (hereinafter referred to as C mode), which transfers and stores the memory contents at 81 degrees Celsius every round of polling, are different. , if it is determined to be different and is determined to be l"YH8J, transfer the contents of B to Cjl'!! When the transfer is completed, erase the contents of B in step 0. Then, proceed to step again. Returning to step (2), boring is performed again sequentially starting from the first channel.Now, in this second polling, the terminal for monitoring the signal transmission line of the first channel (3υ is the signal transmission line of the third and fourth channels) is used. Transmission line monitoring terminal (3m) (34
) is connected to the central monitoring device via the switch means rst, r4+, so that when a transmission signal is sent from the central monitoring device, it can be received, and when the transmission signal of the channel is received, switch means r o,
Turns on r +t and sends back a return signal. Then, the channel number is memorized and retained as soon as the input is received.As a result of this reply, the judgment in step ■ becomes rYEsJ and 81
The channel number will not be stored at any time.

Next, the transmission signal of the second channel is transmitted through the switch means FBI of the signal transmission line monitoring terminal (3s) (34), and the signal transmission of the second channel @ monitoring terminal (
3,), the switch means rj+%r□ is turned on because it can be received. Therefore, the short-circuit point χ is connected to the signal transmission line 11), and the short-circuit detection judgment in step ■ becomes ``YESJ''.
If it is J, the number of the corresponding channel is stored in step O. Then, in step 0, the abnormal channel is set on the operating section (7) of the central monitoring device and displayed by the display means. Also, at step 0, set the control data of the signal transmission line monitoring terminal (3□) of the channel to OFF J. At step 0, press A to erase the channel number, and proceed to the next step. Now, set the first channel number in the memorized order according to the previous polling method.This channel number is the signal transmission line monitoring terminal (3,) that sent the return signal first. The transmission signal of the channel is sent from the central monitoring device in step [phase] after passing through step [phase], and the switch means rl1%rss is turned off due to the short circuit.
Turn on again. The counter moves the specifier Yashinel set next in step O to the second channel in the storage order of the Aj sled. Then, it is determined in step (2) whether this channel exceeds the final storage order of the A menu. What is stored here is the signal transmission line monitoring terminal device (3?,) (34) (31), and the second channel in the storage order does not exceed the final storage order, so in step O The channel transmission signal is sent, and the transmission line monitoring terminal (3,) turns on the off-state switch means r, r4g. In this way, the transmission signal for the signal transmission line monitoring terminal (3υ) corresponding to the channel in the next storage order is sent from the central monitoring device to turn on the off-state switch means ro and rll. When transmission signals are sent from the central monitoring device (4) to all AjIt stored channels, the judgment result in step Φ becomes l"YESJ, and the process returns to step O to transmit the next channel, i.e. A transmission signal corresponding to the signal transmission line monitoring terminal device (3 $) is sent from the central monitoring device.In this case, since the switch means rlI of the signal transmission line monitoring terminal device (31) in the IIQ stage is off. , of course, no transmission signal is input and no return signal can be sent.Therefore, the transmission channel number is stored at around 81°C.The second polling is completed here and step 0 is reached.
The presence or absence of the return signal is determined by nl This result is of course rYE8
In the next step 0 of the friend who is J, the stored contents of B meter are compared and determined with the stored contents of C meter that were stored during the previous polysurge. Here, there was no return signal in the previous Baulink, and the next one was the signal transmission line monitoring terminal (3+) (3
Snow) (6 in 3J, step [phase] judgment Fi
rYEsJ, therefore proceed to step-j [phase] and C
, II'e are rewritten to the contents of 'tB', and in step 0, the stored contents of B-meet are erased. Then, the process returns to step (2), and the third polling is performed. In the third polling, when the channel of the signal transmission line monitoring terminal (3 proverbs) is called, the control data of the transmission signal is rQFFJ, so there is a return signal, but short circuit detection is not performed. Then, the determination result of step 0 is that the channel in question is an abnormal channel stored by the D menu, and the next channel is set in step 0. In this way, when the third ball link is completed and the memory contents of the B-meter 7 and the contents of the C-mode are not determined, the contents of the B-meter 7 are Since the second polling yields the same result, the determination of STET'jO is rYEsJ.

However, in the stage 0, in the stage ■ Bmeth
Since the channel number that was previously stored matches the channel number that was previously stored without any previous return signal, the answer in step (B) is "NO".
Production of central monitoring device prisoner - 5o grams jump to step [phase]. Step 1 is a step to determine whether or not the reset switch for abnormality display is turned on. If the reset switch is not turned on, D, +Iv: The abnormality display based on the memorized child palm arrival signal continues. Hey, ST2i
OK is passed, and the normal control terminal (2X)... transitions to the baud link operation. At this point, if the reset switch is turned on, the process continues with one step.If the reset switch is turned on, step ) erases the memory contents of D and erases the abnormality display. Next step [
normal operation is performed in phase] and the abnormality monitoring operation is terminated. Of course, before performing a reset, it is necessary to identify the short-circuit point by the xk display and repair it. The normal operation of the step-learning is to use the signal transmission line monitoring terminal (
3□) The subsequent signal transmission line '11 is the switch means r! The terminal for control (2- Pauline Jj
Of course, the control terminal (2,) corresponding to the signal transmission line monitoring terminal (3,) is not baud-linked, but the short-circuit point X does not disrupt the functionality of the entire system.

If the disconnection of the signal transmission line 11 and the 0-cal power source are to be monitored, it is preferable to provide a subroutine that stores and displays the next child's number in step (3) in the flowchart of FIG.

Since the present invention is configured as described above, even if a short circuit occurs in the signal transmission line, the short circuit can be easily discovered by detecting and displaying the corresponding signal transmission number and the channel number of the terminal device. Moreover, the signal transmission of the channel concerned can be disconnected by the switch means of the monitoring terminal, including the signal transmission clamp, and the abnormality can be isolated without stopping the function of the entire system. This has the effect of improving the operation of the system even when the system is isolated.

[Brief explanation of drawings]

FIG. 1 is an overall schematic circuit block diagram of an embodiment of the present invention;
Fig. 2 is a detailed circuit block diagram of the main parts of the above, and Fig. 3 is a flowchart for explaining the operation of the above; l) is a signal transmission line, (21) is a control terminal, '(31) ...
is a signal transmission line monitoring terminal, (6) is a storage unit, rll
, 'IS r... is a switch means, and the prisoner is a central monitoring device.'' Agent Patent Attorney Ishi 1) Choshichi

Claims (1)

[Claims] (1) Connect the central monitoring device and multiple control terminals with multiple signal transmission lines, call the control terminal from the central monitoring device, connect it to the Reikyo control terminal, and control nine loads. In a remote control system, a signal transmission line monitoring terminal is connected to a signal transmission line corresponding to each control terminal,
A switch inserted at least in series in the signal transmission line on the side far from the central monitoring device from this connection point and on the side opposite to the central microscopic device with respect to the connection point between the corresponding control terminal and the signal transmission line. and logic control means for transmitting a 9IIK reply signal to the central monitoring device and turning on the switch means when the channel set for transmission from the central monitoring device matches the channel set for the signal transmission line. The central monitoring device is equipped with a detection function that detects short circuits based on the drop in impetus of the signal transmission line, and when a short circuit is detected, it is assigned to the signal transmission line monitoring terminal in advance, Perform Boley J to sequentially call the signal transmission line monitoring terminals, memorize the designated channel that was called, and then determine the presence or absence of a return signal from the signal transmission line monitoring terminal of the channel to determine if there is no return signal. In this case, the memorized channel is deleted until no return signal is sent back, or the result of determining whether there is a return signal from the previous Baulink matches the result of determining whether there is a return signal from the current Baulink. By repeating the baudlink, it is determined whether or not there is a short circuit in the signal transmission line at each call in the baudori:/evening, and when a short circuit occurs, the branch baori:/ji is interrupted, and the channel is displayed, and the signal of the channel is transmitted. The control theta of the switch means of the line monitoring terminal device is set to OFF, and the signal transmission line monitoring terminal devices of each channel are sequentially called in accordance with the stored request, and the respective switch means are turned on to restart the baud link again. An abnormality sight type O of a remote control system characterized by: