KR830002780B1 - Electrical control circuit - Google Patents

Abstract

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Description

Electrical control circuit

1 is a circuit diagram showing an example of an elevator control apparatus according to a standard design.

2 is a circuit diagram showing an example of an elevator control apparatus by a special design.

3 is a block diagram showing a computer control system control unit of a conventional elevator.

4 is a diagram showing the content of data stored in the RAM 23;

5 is a procha art for explaining a computer program corresponding to the circuit diagram shown in FIG.

6 is a procha art for explaining the computer program corresponding to the circuit diagram shown in FIG.

7 is a block diagram showing a computer control system control unit of an elevator according to an embodiment of the present invention.

8A and 8B show data contents stored in the RAM 23A and the RAM 23A.

9 is a procha art for explaining a priority processing program used in another embodiment of the present invention.

The present invention relates to a computer control system for selecting one of a plurality of control programs to obtain one control signal.

Here, the elevator control system will be described as an example of the control system.

First, a conventional elevator control circuit without a computer control system will be described with reference to FIGS. 1 and 2.

1 is an example of the standard design of the call stop determination circuit in the elevator platform serving the first to fifth floors. In the drawing, (+) and (-) are DC power, and (1F) to (4F) The cabin position relay contacts that close when the elevator cabin approaches the 1st to 4th floors, (2G) to (2G) are the cabin position relay contacts on the 2nd to 5th floors, and the 1st to 4th floors (1U) to (4U). Rising call relay contact closed when the lift platform call of the floor is registered, (2D) to (5D) is a falling call relay contact closed when the falling call of the second to fifth floors is registered, (A) (6B ) Is the relay contact, which is closed when the occupant is in operation (7)

2 is an example of the special design of the elevator platform call stop determination circuit of the elevator, in the drawing (11A), the platform call decision relay which issues a command to stop the platform call when operated;

(12A) (12B) is a pass relay contact which is opened when a passing light is pressed in the cabin, the other being the same as in FIG.

Conventionally, the control circuit of an elevator consists of the relay circuit shown in FIG. 1 and FIG.

Most of these relays are around 100, but there are hundreds of them in high-end models. The standardization of these circuits is so advanced that most elevators can only be controlled by standard control circuits, but some of them require special circuits. An example is briefly described below.

In FIG. 1, for example, if there is a lift platform call on the third floor, and the passengers on the ascent are approaching the third floor, (+)-(3F)-(3U)-(6A)-(9)-(11)-( The platform call decision relay 11 is activated by a circuit of-), and the separate boarding circuit (not shown) starts the deceleration to stop on the third floor. The ascending service relay contact 7 is closed when there is no ascending call and there is no need to perform the ascending service during the ascending run, and is stopped by the circuit of (+)-(7)-(9)-(11)-(-) will be.

In most elevators, the platform call stop decision is made by the circuit, but when there is a pass button in the elevator where the driver operates, the circuit of FIG. 2 partially changed from the standard circuit is required.

In this circuit, there is an ascending call to the third floor. Even if the passengers in the ascending run approach the third floor, the passing relay contact 12A is opened when the passing button is pressed, so the platform call stop determination relay 11A is not activated. Will pass through. However, if there is a room call of an elevator, it stops by a separate circuit (not shown).

Thus, in the elevator control circuit composed of a relay circuit, when there is a special design such as a "pass button", a countermeasure is made by adding or changing a relay to a standard circuit and adding or changing a relay contact.

In recent years, however, electronic calculators have been widely used, and elevator control circuits are being converted to electronic calculators from high-end models to supplies.

When electronically calculating the control circuit of an elevator, most of the conventional relay circuits have been almost completely followed and programmed in consideration of the habitability of many persons in design, installation and maintenance.

In this case, the configuration of the control device is as shown in FIG. In the figure, reference numeral 21 denotes an arithmetic element that sequentially processes programs of a readout dedicated memory (hereinafter referred to as a ROM (Read Only Memory)) 22A to 22C that store an elevator control program. This is called a central processing unit (hereinafter referred to as CPU).

Reference numeral 23 denotes a read write memory (hereinafter referred to as RAM (Random Access Memory)) in which ON / OFF data corresponding to a relay contact and a relay coil are stored.

(24) (25) is a data bus and an address bus, which are buses that transfer data between ROMs 22A to 22C, and differences between RAM 23 and CPU 21. to be. The input circuit 30 is for inputting various relay contacts and relay coil ON / OFF types related to the elevator system to generate input data. The input terminals 31a, 31b,... The signal 31n is read in to the RAM 23 as shown in FIG. 4 by the control of the CPU 21 via the data bus 24 and the address bus 25. As shown in FIG.

FIG. 4 shows the leaded data according to the relay contact and the relay coil ON and OFF states as shown in FIG. 1, and the relay contact data and the relay coil data correspond one to eleven.

The output circuit 35 inputs the output data programmed by the CPU 21 via the data bus 24 and the address bus 25, and output terminals 36a, 36b,... To generate an output signal for controlling a drive device such as a motor and a power supply ON / OFF relay provided corresponding to 36n.

Next, FIG. 5 illustrates a platform call stop determination program for an elevator that executes the circuit of FIG.

This program is addressed and stored in ROM 22A, and FIG. 5 is a flow chart corresponding to this program.

In Fig. 5, the registers A, B, and C are memories that temporarily store only one relay coil or contact data, and are provided in the CPU 21.

In addition, V denotes logicalization and AND, V denotes logical OR, → denotes the flow of data, and a line drawn on the data (contact data) indicates that a complement is taken. One thing,

For example, the 13th step of FIG. 5, "Content of contact 7 data V register A → register A", reads data of contact 7 stored in RAM 23 from RAM 23 for repair. After taking the contents of the register A and logicalization, it is returned to register A.

The description of other steps is omitted.

The CPU 21 according to the program stored in the ROM 22A, relay contacts 1F-4F, 2G-5G, 1U-4U, 2D-5D, stored in the RAM 23, (6A) Lead out information corresponding to (6B), (7) ~ (10) to perform AND, OR, etc. corresponding to drafting, and store information corresponding to relay coil 11 as the result of RAM It is stored in (23). In the following, other programs are processed in the same manner, and the programs stored in the ROMs 22A to 22C are periodically executed.

Here, when the standard design circuit is changed and the control circuit of the special design of FIG. 2 is constituted, the program differs from the standard program of FIG. 5 in order to enter the relay contacts 12A and 12B.

Steps 61 and 62 of the poroch art of FIG. 6 differ from the procha art of FIG.

When it is necessary to correct a standard program stored in the ROM 22A in this manner, not only the ROM 22A but also the subsequent ROM 22B and 22C may have a different program storage address. Need to change

In other words, when the program is changed to some extent by standard design, some ROMs need to use special parts instead of standard ones, and it is necessary to prepare spare parts of all ROMs at all times in order to complete the trouble recovery system. However, as mentioned above, there is a drawback that the cost increases when there are many special products.

An object of the present invention is to solve the above-mentioned shortcomings, and when there is a change in the control design, an object of the present invention is to provide a control system that satisfies the design by adding or changing a program without modifying the standard program. Another object of the present invention is to provide a computer control system for selecting only one control signal from among a plurality of control programs for calculating and outputting the same control signal, respectively, in order to obtain one control signal.

Still another object of the present invention is a computer control system which inputs a plurality of status signals at a control object to process data according to a predetermined number of programs, and controls the control object according to the processing result, which is input to the input circuit. Data storage means for storing a status signal, first program storage means for storing a plurality of programs prepared in advance for controlling a control object, each program being stored in said program storage means for obtaining at least one control signal; Using the data stored in the data storage means

Hereinafter, the present invention will be described in detail with reference to the drawings.

In Fig. 7, 22D is a ROM for storing a special control program of an elevator, and 23A is a RAM 22B in which ON / OFF data corresponding to a relay contact is stored as in Fig. 8A. The RAM in which data corresponding to the relay coil is stored as described above is the same as the third one.

ROM 22D when programming FIG. 1 on this device. It is unnecessary.

Then, the program stored in the ROMs 22A to 22C is stored using the relay contact data stored in the RAM 23A by using the RAM 23A as the relay contact and the RAM 23B as the relay coil. The operation results corresponding to all the relay circuits are stored in order in the RAM 23B, and after the completion of one processing cycle, the contents of the RAM 23B are transferred to the RAM 23A, and then again in the next processing cycle. The operation corresponding to the relay circuit is executed from the beginning according to the program stored in the ROMs 22A to 22C.

The order of operation is as described in the conventional example.

Next, when programming FIG. 2 slightly different from FIG. 1, the program of FIG. 1 is left as it is, and then FIG. 2 is programmed.

Referring to FIG. 7, for example, the ROM 22A storing the standard program of FIG. 1 is left as it is, and the ROM 22D storing the special program of FIG. Allow a standard program to run after it has run. In this case, in the theory shown in FIG. 5, the information corresponding to the platform call stop determination relay 11 calculated by the program stored in the ROM 22A is once stored in the data area 80b of the RAM 23B. Based on this, the program stored in the ROM 22D in the same logic as in FIG.

Then, the contents of the RAM 23B are rewritten into the RAM 23A, and various controls are executed using the data of the RAM 23A, so that the information of the relay 11 of the program is virtually ignored and relayed. Only the information of 11A remains as valid data.

That is, by adding an additional program without changing the standard program, the function of the entire program is changed.

This can reduce the number of special ROMs as a whole, thereby reducing the number of spare parts and reducing maintenance costs. In addition to maintenance, standardization of design and data can be achieved, and significant cost reduction can be expected.

In addition, even if the memory programmed for the special event is broken, if the system can temporarily control only the standard circuit, the spare part of the memory can be eliminated in the special circuit, thereby further reducing the maintenance cost.

In addition, even if the additional program is stored in the same ROM as the standard program, the ROM can be easily created since the standard program is not changed.

In addition, in the present embodiment, the case of the standard circuit and the special circuit has been described, but it is possible to give priority to several special circuits without limiting it and to make only one member valid.

Furthermore, in this example, the execution order of the programs is used, and the program to be calculated next is given priority. However, in general, when there are several programs corresponding to the conditional circuit for turning on / off the same relay, all of them are programmed and determined. First, only one of them could be made valid by the order, and the other could be invalidated.

For example, two programs of FIG. 5 and FIG. 6 in the ROM 22 are widened and displayed in the procha art of FIG. 5 by the switch signal of the switch 91 coming from the input circuit 90 of FIG. The program may be added to the ROM 22D so as to select whether to execute one program or to execute the program shown in Procha Art in FIG.

In Fig. 9, procha art displaying the function is shown. As described above, in the present invention, a plurality of programs corresponding to a plurality of circuits for operating the same relay are set, and any one of the control signals obtained by these programs is prioritized. Thus, the program is changed to another program without changing the standard program. It can change, and can reduce various costs by standardization.

Moreover, although an elevator system has been described as an embodiment of the present invention, it is apparent that the present invention can be applied to a computer control system other than the elevator system.

Claims (1)

In a computer control system for inputting a plurality of status signals from a control device to process data according to a plurality of predetermined programs, and controlling the control device according to the processing result, an input circuit for inputting several status signals from the control device. Data storage means for storing a state signal input to the input circuit, first program memory means for storing a plurality of programs prepared in advance for controlling the control device, wherein each program is adapted to obtain at least one control signal. A central processing unit which outputs a control signal by arithmetic processing in accordance with each program using data stored in said data storage means stored in a program storage means, and this control signal is stored in said data storage means; The control signal stored in the above is given to drive the control object. An output circuit for generating an output signal for the second program and second program storage means for storing another program which obtains the same control signal as one program stored in the first program storage means, and is obtained according to these programs. An electric control circuit, wherein only one control signal of each control signal is used as a valid signal.

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