JPS6115033B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a device for controlling an elevator using an electronic computer.

In recent years, elevator control devices equipped with electronic computers have come into use. and,
Some electronic computers use a semiconductor read-only memory and a semiconductor read/write memory that can retain data only while power is supplied as storage devices. Elevator control information is stored in the read-only memory, but if a failure occurs in this read-only memory, a read-only memory containing the same information as that stored information must be created and the elevator replaced with the failed one. cannot be restarted.

However, storing the information in a memory at the site where the elevator is installed is extremely uneconomical because the writing device and aging device are expensive. In addition, the work requires a considerable amount of time, and it takes a long time to recover. Furthermore, even if this were to be manufactured in a factory, a considerable amount of time would have to be allowed for procedures, transportation of parts, etc., and there is no hope of a quick recovery.

SUMMARY OF THE INVENTION The present invention aims to improve the above-mentioned drawbacks and provides an elevator control device that can minimize the downtime of the elevator in the event of a storage device failure.

The elevator control device according to the present invention instructs the all-floor running operation by the all-floor running operation control means when the second read-only memory in which control information specific to the elevator is stored is in failure; The control information detection means detects control information specific to the elevator obtained by the operation of the operation control means,
Controlling the writing of the control information detected by the control information detection means into the memory at any time by the main calculation means, and performing calculation operations of the entire central processing unit;
The elevator is controlled based on the control information written to the occasional write memory until the failure of the second read-only memory is resolved.

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

In the figure, 1 is a central processing unit, 2 is an address bus,
It is also connected to a converter (not shown) for transmitting and receiving signals with a call registration device, a car position indicator, a hoisting motor control device, etc. via a bus such as a data bus. 3 is a read-only memory (hereinafter referred to as ROM) that stores control information common to all elevators, such as call registration, direction determination, and stop commands; 4 is a read-only memory (hereinafter referred to as ROM) that stores control information common to all elevators, such as call registration, direction determination, stop command, etc.; 4A is a ROM that stores control information specific to that elevator according to the specifications of the elevator. 4A is a ROM that stores a command to run the elevator car once between the top floor and the bottom floor when the power is turned on. 5 is a similar RMM; 6 is a landing relay that issues a signal for the stop position of each floor; 7 is a signal for the amount of movement of the car. 8 is a converter that converts the input into information for an electronic computer.

The central processing unit includes an all-floor running operation control means that commands an all-floor running operation when the second read-only memory fails, and control information specific to the elevator obtained by the operation of the all-floor running operation control means. control information detection means for detecting the control information, and main calculation means for controlling writing of the control information detected by the control information detection means into the above-mentioned occasional write memory and performing calculation operations of the entire central processing unit, The elevator is configured to control the elevator based on the control information written in the occasional write memory until the failure of the second read-only memory is resolved.

Next, the operation of this embodiment will be explained.

In normal times, as shown in Figure 1, ROM3,
The operation of the elevator is controlled by processing by the central processing unit 1 based on information from the ROM 4 and RAM 5 and information from the converter 8.

Next, the detailed operation of the elevator will be explained using the flowchart shown in FIG. Here, steps 30 to 32 and steps 34 to 37 are programs stored in the ROM 3 in FIGS. 1 and 2, and execute standard processing that is not affected by the special characteristics of each building. It is something.
A block 42 indicates a program stored in the ROM 4, in which the program of step 33 and special data for each building, such as data such as the number of floors and the distance between floors, are stored together. The block 42 also includes programs (not shown) for processing and executing additional usage operations for each building, such as programs for earthquake operation and fire operation. Block 43 is a program stored in ROM 4A, and its contents are from step 38 to step 4.
1 and uses RAM4A as a storage location for rewritable data.

Now, when the power is turned on, the "initial setting" in step 30 causes the hardware necessary for operating the elevator, such as the converter 8, to send out a reset signal and clear the RAM area to zero.

In step 31, the central processing unit 1 inputs external signals necessary for operating the elevator and stores the data in the RAM 5. As for the data,
The on/off signal of the landing relay 6, the movement amount signal of the elevator car, etc. are inputted via the converter 8.

In step 32, it is determined whether or not ROM 4A has been added. If not, the process advances to step 33.

In step 33, necessary data for the current elevator car is processed from among the number of stops of the building, the distance between floors, etc. stored in the ROM 4, and, for example, the data from the current position of the car to the called floor is calculated. Calculate mileage data and store it in RAM5. This step itself is also stored in the ROM4.

In step 34, a landing or car call is input and processed.

In step 35, the next running direction is determined from the call signal processed in step 34 and the current position of the car, and a running command is output.

Step 36 is a program that actually controls a series of operations of starting, accelerating, running, decelerating, and landing the car in accordance with the running command output from step 35.

In step 37, a program is executed to output a signal to an external device. For example, the current position of the car is output to an indicator.

Further, steps 31 to 37 are executed once, for example, for 50 msec, and when step 37 is completed, the calculations are repeated from step 31 again.

If a failure occurs in the ROM 4, it is temporarily replaced with a configuration as shown in FIG. That is, ROM4 is replaced with ROM4A and RAM4B. Now, when the power is turned on, ROM4A
No matter where the car is, it will travel to the bottom floor and then to the top floor. In other words, the explanation using the flowchart of FIG. 3 is as follows.

In step 38, the minimum building-specific data required for normal elevator service is stored in RAM.
It is determined whether or not it is set to 4B. If the result of this determination is NO, the process proceeds to step 40, where if the car is on an intermediate floor, a downward DN running command is issued, and if the car is on the lowest floor, an upward UP running command is generated. This causes the car to travel from the bottom floor to the top floor once. During this time, the stop position of each floor from the landing relay 6 and the movement amount detection device 7
The amount of movement of the car is taken in through the converter 8 and temporarily stored in the RAM 4B as information on the number of stops and the distance between floors. This is carried out in step 41 of the flowchart of FIG. By storing this memory in RAM 4B, the minimum information necessary for operating the car within the memory contents of RAM 4B is reproduced. Thereafter, standard car operation becomes possible using the information on the number of stops and the distance between floors stored in the RAM 4B. To explain this using Fig. 3, in step 41, the number of stops and the distance between floors of the building are
When set to 4B, in the next calculation after 50 msec, the determination at step 38 becomes YES and the process proceeds to step 39. In step 39, RAM4B
Calculates and calculates data on number of stops and distance between floors stored in
Process and store in RAM5. This step 39
is a program having the same function as step 33. During this time, the ROM 4 can be replaced with a new one; in this case, only parts are replaced, so the downtime of the car can be shortened.

As is clear from the above, when ROM4 fails, it is replaced with ROM4A and RAM4B, but these are not related to the specificity of the building. Therefore, if ROMs 3 and 4A are prepared in which only standard information is stored, it is only necessary to replace them, and operation can be restarted quickly.

In addition, in the example, ROM4 is combined with ROM4A and RAM.
I explained about the replacement for 4B, but RAM4
RAM5 may be used instead of B.

In addition, in the embodiment, RAM 4B is used that retains memory only when power is supplied, but if a non-volatile RAM that retains memory even when power is cut off is used, operation can be restarted after power is turned off. It is clear that it is more convenient not to sometimes have to run the car all the way between the two ends.

As explained above, in this invention, the second read-only memory stores control information specific to the elevator, and the third read-only memory stores a command to make the car run once between both terminal floors in the event of a failure. Since the car can be replaced with a read/write memory that stores control information specific to the elevator obtained during one round operation, the car can be operated even in the event of a failure of the second read-only memory.
After that, the system can be restored to normal by replacing parts in a short period of time.

[Brief explanation of the drawing]

FIG. 1 is a configuration explanatory diagram showing one embodiment of an elevator control device according to the present invention, FIG. 2 is a configuration explanatory diagram at the time of failure in FIG. 1, and FIG. 3 is a flowchart for explaining the present embodiment. It is. 1...Central processing unit, 3...Read-only memory (common information storage), 4...Read-only memory (specific information storage), 4A...Same as left (one-round operation command storage),
4B...Random access memory. In the drawings, the same parts are indicated by the same reference numerals.

Claims (1)

[Claims] 1. A first read-only memory that stores control information common to all elevators, a second read-only memory that stores control information specific to that elevator, and a first read-only memory that stores control information specific to the elevator, and a second read-only memory that stores control information specific to the elevator. A central control unit that performs arithmetic processing based on the occasional write memory that is written and temporarily stores the information stored in the first and second read-only memories and the occasional write memory, and controls the elevator. In an elevator control device comprising a processing device,
An all-floor traveling operation control means for instructing the central processing unit to perform an all-floor traveling operation when the second read-only memory fails, and control information specific to the elevator obtained by the operation of the all-floor traveling operation control means. control information detection means for detecting the control information, and main calculation means for controlling writing of the control information detected by the control information detection means into the above-mentioned occasional write memory and performing calculation operations of the entire central processing unit, 2nd above
An elevator control device characterized in that the elevator is controlled based on the control information written in the above-mentioned occasional write memory until the failure of the read-only memory is resolved. 2. The elevator control device according to claim 1, wherein the all-floor travel operation control means operates based on operation information stored in advance in a first read-only memory. 3. Control of the elevator according to claim 1, wherein the all-floor travel operation control means operates based on operation information stored in advance in a newly provided third read-only memory. Device. 4. The control information used by the all-floor travel operation control means when the second read-only memory fails is composed of operation information for when the car travels to the bottom floor and then to the top floor. An elevator control device according to any one of claims 1 to 3, characterized in that: 5. Elevator control according to any one of claims 1 to 4, wherein the control information detection means is configured to detect the number of elevator stops and the distance between floors as control information. Device. 6. Claims 1 to 4, characterized in that the control information detection means is configured to detect the stopping position of each floor of the elevator as control information.
The elevator control device according to any one of paragraphs. 7. The main calculation means is configured to control writing of the control information detected by the control information detection means when the second read-only memory fails to a newly provided second occasional write memory. An elevator control device according to any one of claims 1 to 6.