JPH0489783A - Signal transmission device of elevator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a signal transmission device for a computer-controlled elevator control system, and more particularly to an inspection device for a signal transmission device.

[Conventional technology]

With the diversification of elevator services, elevator control is becoming more and more important, including car position indicators and hall call devices installed at each landing, destination floor call registration devices installed inside the car or at the landing, and guide display devices. The number of wires between devices has increased, creating issues with wiring space and ease of installation.

Therefore, in order to reduce the number of wires, a method was proposed in Japanese Patent Laid-Open No. 61-194, in which a microcomputer was installed on each floor and in the car to transmit data in series.
This is done in Publication No. 943.

[Problem to be solved by the invention]

The above conventional technology includes a control station configured by a microcomputer in a control device installed in an elevator machine room,
It is configured to perform serial signal transmission control using a bus system in which each of the nine seats on each floor and a dependent station formed by a microcomputer installed in the control panel for monitoring the operating status of the elevator are connected by a pair of signal lines. In this way, the invention only relates to the transmission control method, without considering the testing method of the device itself, and there is a problem in providing a testing method that effectively utilizes the advantages of the device equipped with a microcomputer. there were.

An object of the present invention is to automatically perform inspection by a terminal device equipped with a microcomputer installed in a control panel for monitoring the operating status of a nine-car car on each floor and an elevator, without giving control signals for inspection from an external device. Its purpose is to check the operation of internal circuits.

Furthermore, the purpose of the present invention is to simply check the operation of the device even when it is installed in an elevator tower.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a terminal equipped with the microcomputer with a terminal inspection program in addition to the normal functions of the terminal signal transmission control program and input/output signal control program. Stored in ROM.

Further, in order to start the inspection program, an ID code (the code can be arbitrarily set using a deep switch or the like) was used to identify the station number of the terminal.

[Effect]

If the ID code for identifying the station number of each terminal is set to the automatic inspection program mode for terminals installed on the 9 seats on each floor and the elevator operation status monitoring panel equipped with a microcomputer, transmission control of each terminal will be performed. The mode switches to automatic inspection program mode.

As a result, each terminal's signal transmission control circuit, transmission circuit,
Output diagrams such as lighting of the receiving circuit 2 indicator light, input circuits such as push buttons, etc. can be checked on a single terminal.

(Example) Hereinafter, an example of the present invention will be explained with reference to Fig. 1.
The figure shows a hardware configuration diagram of a terminal installed on each floor with two seats equipped with a microcomputer and on an elevator operating status monitoring panel. Figure 2 shows an elevator signal transmission system using the terminal. FIG.

First, a signal transmission system between elevator devices will be explained using FIG. This figure shows a case where the transmission control terminal of the present invention is applied to an elevator system having service floors from IF to 8F. The elevator control unit (MPU) 1 is connected to a control station (I10 system signal transmission control station 2), and is further connected to dependent stations (hall signal transmission control stations) 4a to 4c installed on each floor through a path line 3a. It is connected. At the same time, it is also connected to a dependent station (on-car signal transmission control station) installed in the car through the path line 3b.

Furthermore, the elevator control unit (MPU) 1 is connected to a control station (
A network signal transmission control station) 6 is connected to a dependent station (monitoring panel signal transmission control station) 8 by a path line 7.

The control station 2 performs boring operations on each of the dependent stations 4a to 4c one after another, and sends and receives various information such as elevator call button input signals and response lamp lighting signals. Similarly, the path line 3b is passed to the dependent station (on-car signal transmission control station) 5, and the path line 7 is connected to the dependent station (monitoring board signal transmission control station) 8.
Similarly, signals are sent and received using the polling method.

Here, the floor is equipped with an operation panel 43 that can directly register the destination floor at the landing, an indicator 42, and a parking switch 41, which allows control of multiple input/output points as shown in FIG. Provide a terminal with hardware configuration. Also,
From the second floor to the next floor, call buttons 44, 46, indicator 4
5.47 is provided, and although not shown, a terminal having the same configuration as that in FIG. 1 but with fewer input/output points is applied. The car is provided with a door drive device 5a and an operation panel 5C, and a station capable of controlling multiple input/output points as shown in FIG. 2 is used.

FIG. 2 is an example of a hardware configuration diagram of the dependent station described above.

The single-chip microcomputer 200b controls input/output of output circuits 240, 241, input circuits 242, 243, and transmitting circuits 2o2. It controls signal transmission of the receiving circuit 203. Furthermore, inside the single-chip microcomputer 200b, a central processing unit (CPU) 207 that executes programs,
Random access memory (RAM) 2 to store data
11. Read-only memory (ROM) 209 that stores programs. Serial signal transmission control port (SI)
208. Port (RI) 213.2 for input/output signal control
14. Address output port (ABL.

ABH) 220, 221 data input/output boat (DB)
222, an internal address, and a data bus 212.

In order to shift this terminal to the automatic inspection mode, a preset code is set in the ID code setting deep switch 205a. Since the deep switch 205a is pulled up to 5V by the resistor 206, a predetermined voltage is applied to each bit at the input signal port 217. The CPU 207 reads this state, and the automatic inspection mode program portion stored in the ROM 209 is activated. Even in this state, the WOT (watchdog timer) circuit 232 performs the same operation as in the normal transmission control mode, and enables the transmitting circuit 202 and the output circuit 24.0.241. In this automatic inspection mode, any II set by the input condition setting circuits 252 and 253
A signal pattern of HI+ level or II L 1 level is read by the single-chip microcomputer 200b through input circuits 242 and 243. This read parallel data is then transferred to the serial signal transmission control port (SI) of the single-chip microcomputer 200b.
) 208 and is converted into serial data and output.

At this time, the CPU 207 uses the input/output signal transmission port (P
I) Instructs 213 to output a serial signal transmission permission signal. Thereby, the transmitting circuit 202 drives the pulse transformer 201 based on the sent signal,
Send out a transmission signal. Since the automatic test mode is aimed at being able to be performed by a single terminal, a pass line that is a normal load for the pulse transformer 201 is not connected, so a resistor 204 is connected as a pseudo load by a dip switch 205a. Here, the signal sent from the transmitting circuit 202 drives the pulse transformer 201 and is also applied to the receiving circuit 203 at the same time, so the receiving circuit 203 can input this signal as a received signal. This input signal is read through the serial signal transmission port (SI) 208 of the single-chip microcomputer 200b. Further, the read data is converted into a parallel signal by the CPU 207 from the data output port (DI) 222 to the output circuits 240 and 241 using a preset address signal, and is output. This output signal is input to output state detection circuits 250 and 251. Through this series of operations, the arbitrary bit pan set by the input condition setting circuits 252 and 253 passes through each circuit in the terminal and is again applied to the output state detection circuits 250 and 251. Therefore, the input condition setting circuit 25
2. [If the bit pattern added to 53 and the bit pattern of the output state detection circuits 250 and 251 are the same pattern, it can be confirmed that each circuit in the terminal is operating normally. However, if the respective bit pans do not match, it means that the circuit within the terminal is malfunctioning.

In this way, by shifting the terminal to the automatic test mode, the terminal device itself can automatically check the operation of the internal circuit without receiving a test control signal from an external device.

Moreover, the above-mentioned functions operate effectively even when the terminal is installed in an elevator tower, as described below, and the failure location can be easily discovered.

In other words, when the elevator is installed, each terminal is
As shown in Figure 2, the control station (■1
0 signal transmission control station)2. It is connected to a control station (network signal transmission control station) 6.

To switch to automatic inspection program mode in this state,
It is necessary to give an instruction from the elevator control unit (MPU) 1 to disconnect the terminal from the path line and operate it independently as a terminal. Although this signal is not shown, it is configured so that it can be input from an elevator maintenance tool. When the terminal receives this signal, it enters a standby state in the automatic test mode, and at this time, if predetermined data is set by the deep switch 205a in the terminal, it can shift to the automatic test mode.

When the elevator is installed, the input condition setting circuits 252, 253 and exit state detection circuits 250, 25 shown in FIG.
1 cannot be connected, so we will perform a simple automatic inspection of the terminal as follows. As shown in FIG. 2, the input condition setting circuit includes key switches 41, push buttons 4.3,
Since input circuits such as 44° and 46 are connected, these are used. Further, since the indicators 43, 45.4-7 are connected as the output condition setting circuit, the display state can be checked. Therefore, the operation of the terminal can be checked by outputting the signal pattern input from the signal hexagonal device connected to the hall terminal from the signal output device.

Furthermore, when the elevator is installed, it is also possible to disconnect the terminal from the pass line and shift to the automatic inspection mode simply by setting the deep switch.

In this way, in a complex system configuration of an elevator signal transmission system, a faulty part can be easily found within a short time while the elevator is installed.

〔Effect of the invention〕

According to the present invention, the terminal device equipped with a microcomputer installed in the control panel for monitoring the operating status of each floor and the elevator automatically controls the internal circuit without applying control signals for inspection from an external device. Since an operation check can be performed, it is possible to simplify the terminal inspection device and improve the efficiency of inspection. In addition, since there are many types of terminal devices as shown in Figure 2, this function does not require a device corresponding to each terminal of the inspection device, so it is possible to prevent an increase in the number of types of inspection devices. .

Furthermore, by activating the automatic inspection mode while the elevator is installed, it is possible to easily find faults in the increasingly complex elevator signal transmission system, thereby improving the efficiency of on-site maintenance and inspection work. be able to.

[Brief explanation of drawings]

Fig. 1 is a block diagram of the two seats on each floor equipped with a microcomputer according to an embodiment of the present invention, and a block diagram of the elevator operating status monitoring panel, and Fig. 2 is a block diagram of the elevator signal transmission system. be.

Claims (1)

[Scope of Claims] 1. A signal transmission device for an elevator, characterized in that, in a signal transmission device between devices constituting an elevator control system, the operation function of the signal transmission device itself is automatically checked. 2. In claim 1, the elevator signal transmission is performed by selecting a control mode from a program for controlling the signal transmission device, in which the operation function of the signal transmission device is automatically checked by itself. Device. 3. The elevator signal transmission device according to claim 2, wherein the control mode is selected by an ID code for identifying the station numbers of the control station and the dependent stations.