JPH0684234B2 - Elevator control device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator control device, and more particularly to an elevator control device capable of changing programs and data of an elevator control unit from a remote monitoring center. is there.

[Conventional technology]

FIG. 13 is a block diagram of a main part of a conventional elevator control device disclosed in, for example, Japanese Patent Laid-Open No. 61-169463. In the figure, 1 is an elevator, 2 is an elevator control device for operating and managing the elevator 1 according to a hall call and a car call.

The elevator control device 2 includes a CPU (central processing unit) 3 and a CPU
3, a memory 5 connected to the CPU 3 via the bus 4, and an interface 6 connected to the CPU 3 via the bus 4 for exchanging signals between the elevator 1 and the CPU 3, and response management of car calls and landing calls, It is used to select the driving direction / stop floor of the car, start / run commands, door opening / closing commands, landing, and lighting commands for the car indicator. That is, the CPU 3 decodes and executes the elevator control program and data stored in the memory 5, reads the status signal of the elevator 1 together with the elevator control device 2 through the interface 6,
The CPU 3 outputs a control signal resulting from the arithmetic processing to the elevator 1 through the interface 6 to control the operation of the elevator 1.

[Problems to be solved by the invention]

In the elevator control device using the conventional computer as described above, there is no means for changing the program or data in the memory of the elevator control device from the remote monitoring center. There is a problem that service personnel and others need to go to the elevator machine room of the building to be monitored one by one, and as a result, technicians and others have to be on standby at each business site, and the human cost also increases. .

The present invention has been made to solve the above problems, and an object of the present invention is to provide an elevator control device capable of changing programs and data at an elevator remote monitoring center.

[Means for solving problems]

An elevator control device according to the present invention connects an elevator control circuit and an elevator remote monitoring device by a telephone line via a communication interface, and transmits a maintenance command from the remote monitoring device to cause the elevator control circuit to perform a maintenance control program. According to the above, the maintenance posture is set and the memory contents of the elevator control circuit are changed.

[Action]

According to the present invention, when the maintenance start command from the remote monitoring device is received by the elevator control circuit,
The main tenness control program starts and is set during maintenance start acceptance, and call registration is prohibited and door opening is prohibited. By inputting a memory display and memory correction command, these programs are started and the commanded memory contents are changed. Therefore, the person in charge of maintenance can change the memory contents of the elevator control circuit without going to the elevator machine room of the building to be monitored.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a system configuration diagram showing an example of an elevator control device capable of changing programs and data in a monitoring center. In the figure, 10 is the elevator 1,
An elevator control circuit that manages operation according to the occurrence of a call, a CPU (central processing unit) 11, a memory 13 connected to this CPU 11 via a bus 12, and an elevator 1 connected to the CPU 11 via a bus 12 And an interface 14 for exchanging signals between the CPU 11 and a CPU 11, and a communication interface 15 connected to the CPU 11 via a bus 12 for transmitting and receiving with a monitoring device 16 of a remote monitoring center.

Further, the monitoring device 16 monitors the operating state of the elevator 1 and the computer 17 and the monitoring computer 17
Keyboard 18 for command input connected to, a CRT (cathode ray tube) 19 for displaying elevator monitoring results, and a communication interface 20 for transmitting and receiving data between the computer 17 and the elevator control circuit 10. The communication interface 20 on the monitoring side and the communication interface 15 on the elevator control side are connected by a telephone line 21.

FIG. 2 is a diagram showing the structure of the memory 13 of the elevator control circuit 10 and the connection relationship with the related parts. The memory 13 is a memory unit 13a that stores an elevator control program,
Memory unit 13 for storing maintenance control program
b, and a data memory unit 13c for storing the status signal and control signal of the elevator 1.

The instruction code read from the elevator control program memory portion 13a is decoded by the CPU 11, and signals are exchanged with the elevator 1 via the interface 14 according to the instruction, and the elevator status signal in the data memory portion 13c is referred to. To control the elevator 1. Also, CPU1
Remote monitoring device 1 through interface 15 for communication 1
When receiving the maintenance command sent from the computer 17 of 6, the CPU 11 reads the instruction code from the maintenance control program memory portion 13b and decodes it, and according to the instruction, the elevator control signal that determines the operation of the elevator at the time of maintenance is data. The contents are read from the memory unit 13c, the contents of the data memory unit 13c are modified, or displayed on the CRT 19 of the remote monitoring device 16.

FIG. 3 shows types of maintenance commands and format examples thereof. FIG. 3A shows a maintenance start command format, FIG. 3B shows a maintenance end command format, and FIG. The format of the memory display command is shown in FIG. 7D, which is the format of the memory correction command.

FIG. 4 is a flag showing a maintenance state. In FIG. 4A, the elevator is in normal operation, in FIG. 4B, maintenance start is being accepted, and in FIG. 4C, maintenance is being performed.

Next, the operation will be described.

FIG. 5 is a flow chart showing a procedure of execution levels of the elevator control program and the maintenance control program.

In FIG. 5, when the elevator control circuit 10 is powered on, the elevator control program shown in step 30 is executed, and in the next step 31, it is determined whether maintenance is being started. Here, if "NO", the process returns to step 30, and if "YES", the process proceeds to step 32 to generate an interrupt. That is, the elevator control program is repeatedly executed in the interrupt acceptable state. On the other hand, when a maintenance start command is generated in the remote monitoring device 16 and this is received by the elevator control circuit 10, the CPU 11 receives an interrupt request, interrupts the elevator control program being executed, and the maintenance control program shown in step 33. Is executed.

FIG. 6 is a flow chart showing the entire maintenance control program.

One of the maintenance commands shown in FIG. 3 is input from the keyboard 18 of the remote monitoring device 16, and the maintenance command is input to the communication interface 20 and the telephone line 2.
When the call arrives at the communication interface 15 through 1, the CPU 11 interrupts the elevator control program to start the maintenance control program in response to the interrupt request, and determines in step 40 which maintenance command has arrived.

Here, when the maintenance start command is received, it is determined whether the key code uniquely attached to the elevator control device 10 and the keyboard attached to the maintenance start command match in step 41, and only when they match, In step 42, the maintenance start program is executed. After the execution of this program is completed, the program is returned to the original program saved before the execution of this interrupt program, that is, the elevator control program.

Also, when the maintenance end command is received,
Proceed to snap 43 and execute the maintenance termination program. Similarly, when the memory display command is received, the process proceeds to step 44 and the memory display program is executed. When the memory correction command is received, the process proceeds to step 45 and the memory correction program is executed. When the execution of each program is completed, the saved elevator control program before execution of the interrupt program is restored.

FIG. 7 is a flowchart showing the procedure of the maintenance start program.

When the maintenance start program starts, in step 50, the maintenance status flag shown in FIG. If the maintenance state is normal operation, the process proceeds to step 51, call registration prohibition, which is one of the memory 13 elevator control signals, is set, and then, in step 52, the maintenance state is set to start acceptance and EXIT. To do.

If maintenance start is being accepted, step 53
Whether the car is stopped or closed in step 54, step 55
It is sequentially determined whether all the calls have disappeared, and as a result, only when the car is stopped, the door is closed and all the calls are exhausted, that is, only when the car has answered all the calls,
The process moves to step 56 and the maintenance state is set to maintenance. When operating the elevator after that, set the door open prohibition, which is one of the elevator control signals, so that the elevator will operate with the door closed (step 57), and in the next step 58, communicate that the maintenance start has been accepted. Computer of the remote monitoring device 16 through the communication interface 15, telephone line 21 and communication interface 20.
Send to 17 and CR to that effect with the program of computer 17
Display on T19.

FIG. 8 is a flow chart showing the procedure of the maintenance end program.

In FIG. 8, when the maintenance end program starts, in step 60, the maintenance status flag is calculated. As a result, if the maintenance status is in the maintenance state, the procedure proceeds to step 61, the call registration prohibition is released, the maintenance status is set to normal operation in the next step 62, and the maintenance end is accepted in step 63. Remote monitoring device
It is sent to 16, and the fact is displayed on the CRT 19, and at the next step 64, the door open prohibition is released.

FIG. 9 is a flowchart showing the procedure of the memory correction program.

In the figure, when the memory correction program is started, in step 70, the maintenance status flag is calculated. As a result, if the maintenance state is during maintenance, the process proceeds to step 71, and the memory address indicated by the memory correction maintenance command of the format shown in FIG. 3 (c) is changed, for example, there is no fear of safety loss during operation of the elevator. If it is determined that the address may be changed, and if it is determined that the address may be changed, the process proceeds to step 72, and the memory content of the specified address of the memory 13 is rewritten with the changed content attached to the maintenance command.

FIG. 10 is a flowchart showing the procedure of the memory display program.

In the figure, when the memory display program is started, the maintenance state is determined in step 80. As a result, if the maintenance status is during maintenance,
Proceeding to step 81, the fact that the contents of the memory indicated by the memory address of the memory display maintenance command shown in FIG.
Display on T19.

FIG. 11 is a flowchart showing the procedure of the call registration program in the elevator control program.

In the figure, when the call registration program starts, first, at step 90, it is judged whether or not there is call registration prohibition in the elevator control signal. When there is call registration prohibition, all hall calls and car calls cannot be registered. To do so. If the call registration is not prohibited, the process proceeds to step 91, it is determined whether or not the condition for call registration is satisfied, and when the condition is satisfied, the call is registered at step 92.

FIG. 12 is a flowchart showing the procedure of the door opening command program in the elevator control program.

In the figure, when the door opening command program starts,
In step 100, it is determined whether there is a door open prohibition in the elevator control signal. If it is determined that the elevator is open, the elevator door is not opened. When it is determined that there is no door opening prohibition, it is determined in step 101 whether the door opening condition is satisfied, and when the door opening condition is satisfied, a door opening command is output in the next step 102.

Next, from the remote monitoring center, the data "01" having the main floor as the first floor stored at the address 1000 of the memory 13 in the elevator control circuit 10 is changed to the data "02" having the main floor as the second floor. The case will be described. The key code of the elevator control circuit 10 is “31”.

First, the keyboard 18 of the remote monitoring device 16 is operated to start maintenance and input the key code "31". This command is for computer 17, communication interface 2
0, sent to the elevator control circuit 10 through the telephone line 21, and when it arrives at the communication interface 15, CPU1
1 interrupts the elevator control program currently being executed and executes the maintenance control program for which an interrupt request was made. Here, since the key code "31" matches, jumping to the maintenance start program and executing this will prohibit call registration, and the maintenance status will be set during maintenance start acceptance If it is stopped and the door is closed, the maintenance is set, the door is prohibited from opening, and the fact that the maintenance start is accepted is returned to the monitoring device 16 and displayed on the CRT 19. If the car is running, the door is open, or there are still calls, the elevator control program will be executed until there are no calls, the car will stop and the door will be closed, and then the maintenance control program will be executed. To be done.

Next, in order to see what the 1000th address in the memory 13 looked like, operate the keyboard 18 to display the memory, `` 100
Enter "0". As a result, when the communication interface 15 of the elevator control device 10 receives the maintenance command, the maintenance control program is executed, the memory display program is jumped, and by executing this, the stored content “01” at address 1000 is stored in the CRT 19. indicate. Then, in order to change “01” to “02”, “memory correction”, “1000”, and “02” are input from the keyboard 18. As a result, the contents of the address 1000 of the memory 13 are changed to "02".

Next, if a maintenance end command is entered from the keyboard 18, both the call registration prohibition and the open prohibition are released, and the CRT 19 displays the maintenance end.

In the above example, the case of rewriting the contents of address 1000 of the memory 13 for storing the number of floors of the main floor has been described, but the same applies to the case of changing the contents of the program.

Further, in the above embodiment, when the program or data of the elevator control circuit is rewritten from the remote monitoring center, the key code is attached to start the maintenance, so the person who does not know the key code, that is, the maintenance of the elevator. It is possible to prevent people other than the person in charge from changing programs and data unnecessarily.

Further, if the elevator is still operating at the start of maintenance, subsequent call registration cannot be performed, but since the calls up to that time are answered, passengers already on the elevator will not be bothered. Furthermore, since the door is prohibited during maintenance, it is possible to prevent passengers from accidentally getting into the car during maintenance, that is, when the contents of the memory are being rewritten.

〔The invention's effect〕

As described above, according to the present invention, since the contents of the memory of the elevator control circuit can be changed from the remote monitoring center of the elevator through the telephone circuit, it is necessary for the person in charge of maintenance to go to the elevator machine room of the building to be monitored. There is no effect and labor saving can be achieved.

[Brief description of drawings]

FIG. 1 is a system configuration diagram showing an example of an elevator control device according to the present invention, FIG. 2 is a diagram showing details of a memory section thereof, and FIGS. 3 (a) to 3 (d) are maintenance commands in this embodiment. FIG. 4 is a format diagram showing an example, FIG. 4 is a diagram showing a maintenance state flag in this embodiment, FIG. 5 is a flow chart showing the execution level procedure of the elevator and maintenance control program in the embodiment of the present invention, FIG. FIG. 7 is a flow chart showing the entire maintenance control program in the embodiment of the present invention, FIG. 7 is a flow chart showing the procedure of a maintenance start program, FIG. 8 is a flow chart showing the procedure of a maintenance end program, and FIG. 9 is a memory correction program. Flowchart showing the procedure of
FIG. 10 is a flowchart showing the procedure of the memory display program, FIG. 11 is a flowchart showing the procedure of the call registration program in the elevator control program, FIG. 12 is a flowchart showing the procedure of the door opening command program, and FIG. 13 is a conventional elevator. It is a block diagram of a control device. 1 ... Elevator, 10 ... Elevator control circuit, 11 ...
CPU, 13 ... memory, 14 ... interface, 15 ...
Communication interface, 16 …… Remote monitoring device (center), 17 …… Computer, 18 …… Keyboard, 19 ……
CRT, 20 ... communication signal interface, 21 ... telephone line. The same reference numerals in the drawings indicate the same or corresponding parts.

Claims (2)

[Claims] 1. An elevator control circuit for controlling the operation of an elevator by a control program while referring to a status signal of the elevator and controlling it in a maintenance posture, and the elevator control circuit connected to the elevator control circuit via a telephone line and a communication interface. A remote monitoring device for monitoring the operating status of the elevator, and when the elevator control circuit receives a maintenance command transmitted from the remote monitoring device, it controls the elevator to a maintenance state and is stored in the memory of the elevator control circuit. An elevator control apparatus, characterized in that an elevator control program and data in a memory can be changed by executing a maintenance control program. 2. An elevator control circuit is set to call registration prohibition and door opening prohibition state when the elevator control circuit receives the maintenance command and is in the maintenance state. The elevator controller according to the first aspect.