JPS62222985A - Controller for 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 [Field of Industrial Application] The present invention relates to an elevator control device that exchanges data between a data transmission circuit and a main processing circuit in the elevator control device.

[Conventional technology]

Generally, in an elevator control device using a microcomputer, a large number of microprocessors are used to perform various kinds of control in a distributed manner. The functions of each microcomputer in the elevator control system are divided into two main types: ■ A transmission control microcomputer that transmits and collects data, etc. ■ A main processing microcomputer that uses data to perform the processing necessary to control the elevator It is something. The above-mentioned transmission control microcomputer and main processing microcomputer mutually transmit a large amount of data in order to control the elevator.

When exchanging data between two microcomputers, one for main processing and one for transmission control, the amount of data to be transmitted is large and the transfer speed needs to be increased, so a shared data memory is provided between the microcomputers and data is exchanged between them. A data exchange method of reading and writing via a bus is used.

[Problem that the invention seeks to solve]

When data is exchanged between the main processing microcomputer and the transmission control microcomputer, one data memory is provided between the two microcomputers.

However, this data memory is a shared memory, and while one microcomputer is in use, the other microcomputer cannot use this data memory. Therefore, when a large amount of data is exchanged between both microcomputers, the exchange efficiency decreases. In addition, if neither microcomputer is using the shared memory and the microprocessors of both microcomputers simultaneously issue a request to use the shared memory, the shared memory will be allocated to the microprocessor with higher priority according to a predetermined order. .

Lower priority microprocessors must wait to use shared memory.

As mentioned in Section 2, since the main processing microcomputer and the transmission control microcomputer cannot use the memory for data exchange at the same time, a waiting time is required for data exchange, reducing exchange efficiency.

An object of the present invention is to provide an elevator control device having a data exchange circuit that enables efficient data exchange between a data transmission circuit and a main processing circuit.

[Means for solving problems]

A first data exchange circuit that stores the output data of the main processing arithmetic circuit between the main processing arithmetic circuit and the data transmission control circuit and outputs the stored contents to the data transmission control circuit, and stores the output data of the data transmission control circuit. A second data exchange circuit is provided for outputting the stored contents to the main processing arithmetic circuit.

[Effect]

The first data exchange circuit stores the output data of the main processing arithmetic circuit according to a predetermined command issued by the main processing arithmetic circuit, and outputs the stored contents to the data transmission control circuit. The output data of the data transmission control circuit is stored in response to a predetermined command issued by the control circuit, and the stored contents are output to the main processing arithmetic circuit. By providing these first and second data exchange circuits, efficient data exchange is possible between the main processing arithmetic circuit and the data transmission control circuit.

〔Example〕

An embodiment based on the present invention will be described with reference to the drawings. FIG. 1 shows a block diagram of an elevator control device according to an embodiment. Reference numeral 1 denotes a main processing arithmetic circuit which performs computations necessary for elevator operation control and gives drive commands to the hoisting machine drive circuit 2 based on the computation results. The hoist drive circuit 2 drives a hoist (not shown) according to a drive command from the main processing arithmetic circuit 1, and raises and lowers the hoist (not shown) to a predetermined floor.

The main processing arithmetic circuit 1 includes a microprocessor 6 that performs arithmetic processing, a clock circuit 7 that outputs signals for synchronizing each circuit, and a program storage circuit 8 that stores programs.
, a data storage circuit 9 that stores data handled by the microprocessor 6, and an input/output circuit 10 that connects and controls the hoisting gutter drive circuit 2. 63 is a data transmission control circuit, which is connected to the floor. Collection of call data from the provided hall call input circuit 4 and the car call input circuit 5 provided within the car.

Perform transmission. The data transmission control circuit 3 includes a microprocessor 11, a clock circuit 12, a program storage circuit 13,
It is composed of a data storage circuit 14 and an input/output circuit 15.

The data exchange circuit 16 is composed of gate circuits 17 and 18 and a data exchange storage circuit 19, and stores the output data of the data transmission control circuit 3 and outputs the data to the main processing arithmetic circuit 1. The data exchange circuit 20 is composed of gate circuits 21, 22 and a data exchange memory circuit 23, stores the output data of the main processing arithmetic circuit 1, and outputs the data to the data transmission control circuit M3.

Here, the gate of the gate circuit 21.18 opens when the gate control signal GCI,2 is input.

Further, the gates of the gate circuits 17 and 22 are closed when the gate control signal GCI,2 is input.

The operation of the embodiment with the above configuration will be explained using the drawings. FIG. 2 is an operational flowchart of the main processing arithmetic circuit 1. The microprocessor 6 reads a program from the program storage circuit 8, inputs data from the data storage circuit 9 and the input/output circuit IO according to this program, performs arithmetic processing, and stores the data in the data storage circuit 9 or the input/output circuit 1.
Send data to 0 (step A). Next, the microprocessor 6 performs data transmission processing (step B) to exchange data with the data transmission control circuit 3. The microprocessor 6 performs elevator operation control processing (step A
) and the data exchange process (step B) are repeatedly executed.

The data exchange processing by the microprocessor 6 and the operation of the data exchange circuit 20 will be explained using FIG. 3.

The third @ is a flowchart showing data exchange processing performed between the main processing arithmetic circuit 1 and the data transmission control circuit 3. The microprocessor 6 is a gate circuit 21.22
A gate control signal GC2 is applied to the gate circuit 21 to open the gate of the gate circuit 21 (step C).
Close the second gate (step D). The microprocessor 6 transfers the data from the data storage circuit 9 to the data bus line B.
Data is written from L1 to the data exchange storage circuit 23 via the gate circuit 21 (step E). After the microprocessor 6 finishes writing data to the data exchange memory circuit 23, the microprocessor 6 inputs the gate control signal GC1 (Step F), and determines whether the gate of the gate circuit 17 is open based on the presence or absence of the gate control signal GC1. Make a judgment (Step G). Gate circuit 17
If the gate is open, the microprocessor 6 reads the data stored in the data exchange memory circuit 19 and stores it in the data memory circuit 9. writing and,
Data exchange circuit] Reading of data from 6 is completed.

FIG. 4 is an operational flowchart of the data transmission control circuit 3. The microprocessor 11 reads the program from the program storage circuit 13. Input from the data storage circuit 14 and input/output circuit 15 according to this program,
Predetermined processing is performed to store or transmit data to the data storage circuit 14 and data exchange circuit 16. The data transmission control circuit 3 repeatedly performs data exchange processing with the main processing arithmetic circuit 1 and data input/output processing with an external device such as a call registration device.

The data exchange processing by the microprocessor 11 with the main processing arithmetic circuit 1 and the operation of the data exchange circuit 16 will be explained using FIG. Figure 5 shows the data transmission control circuit 3.
2 is a flowchart showing data exchange processing performed between the main processing arithmetic circuit 1 and the main processing arithmetic circuit 1. FIG. microprocessor 1
1 opens the gate of gate circuit 18 and closes the gate of gate circuit 17 by applying gate control signal GC1 to gate circuits 18 and 17. (Step to L). Next, the microprocessor 11 writes necessary data out of the data stored in the data storage circuit 14 into the data exchange storage circuit 19 (step M). After the writing is completed, the microprocessor 11 inputs the gate control signal GC2 (step N) and determines whether the gate of the gate circuit 22 is open or closed. (Step P). If the gate of the gate circuit 22 is open, the stored data is read from the data exchange storage circuit 23 (step Q).

Here, the data exchange memory circuit 23 includes the main processing arithmetic circuit 1.
The data written during data exchange processing is stored. The data of the main processing arithmetic circuit 1 is stored in the data exchange memory circuit 2.
3 to the data transmission control circuit 3. Further, data of the data transmission control circuit 3 is written in the data exchange storage circuit 19, and this data is read by the main processing arithmetic circuit 1 during the data exchange process. Therefore, the data in the data transmission control circuit 3 is transmitted to the main processing arithmetic circuit 1 via the data exchange storage circuit 19.

Data transmission between main processing arithmetic circuit 1 and data transmission control circuit 3 is performed by data exchange circuits 16 and 20. That is, data transmission from the main processing arithmetic circuit 1 to the data transmission control circuit 3 is performed using the data exchange circuit 20, and conversely, data transmission from the data transmission control circuit 3 to the main processing arithmetic circuit 1 is performed using the data exchange circuit 16. It is done.

〔Effect of the invention〕

Two independent data exchange circuits are provided between the main processing arithmetic circuit and the data transmission control circuit to exchange data, so that the main processing arithmetic circuit and the data transmission control circuit simultaneously Since data can be read and written, data can be efficiently transmitted without requiring waiting time due to the use of a data exchange circuit.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an elevator control device according to an embodiment of the present invention, FIG. 2 is an operation flowchart of the main processing arithmetic circuit, and FIG. 3 is a flowchart showing data exchange processing performed by the main processing arithmetic circuit. , FIG. 4 is an operation flowchart of the data transmission control circuit, and FIG. 5 is a flowchart 1 to diagrams showing data exchange processing performed by the data transmission control circuit.

Claims (1)

[Scope of Claims] A main processing arithmetic circuit that performs operational control calculations to guide the car to each floor based on registered hall calls and car calls, a hall call input circuit provided on each floor, and a hall call input circuit provided in the car. a data transmission control circuit that controls the transmission of call data by the car call input circuit; and a data transmission control circuit that stores output data of the main processing arithmetic circuit and outputs it to the data transmission control circuit according to a predetermined command issued by the main processing arithmetic circuit. An elevator control device comprising: a data exchange circuit; and a second data exchange circuit that stores output data of the data transmission control circuit and outputs it to the main processing arithmetic circuit according to a predetermined command issued by the data transmission control circuit. .