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A device equivalent detection device

A detection device and equipment technology, applied in the direction of program control, instrument, computer control, etc., to achieve the effect of good application value and promotion prospect, high degree of automation, and simple operation process

Active Publication Date: 2019-11-19
HUBEI SANJIANG AEROSPACE WANFENG TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the content and requirements to be tested are quite different from those of ordinary equipment testing devices, it is not suitable to directly use the equipment in use for docking

Method used

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  • A device equivalent detection device
  • A device equivalent detection device
  • A device equivalent detection device

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0025] Example 1: After the control system sends a serial port data frame (0x10 0xff 0x000x00 0x010x0a 0x0b 0x10 0x03) through the 422 communication interface, the detection device will trigger an external interrupt when it receives the serial port data, call the external interrupt function, receive the serial port data and store it in the buffer . Then pick frames and parse in the main function. The 0th byte (0x10) represents the frame header, the 1st byte (0xff) represents the frame identifier, bytes 2~4 (0x00 0x00 0x01) represent data, byte 5 and byte 6 (0x0a0x0b) represent check , byte 7 and byte 8 (0x10 0x03) indicate the end of the frame. Wherein the 0th bit in byte 4 is 1, according to the communication protocol, the meaning of this bit is the engine working instruction. After the analysis is completed, the detection device will give the engine work instruction in the amount output by itself, and then send the received communication data back to the control system.

example 2

[0026] Example 2: It is basically the same as Example 1, except that the data bytes and check values ​​are different. If the data byte received is: 0x00 0x01 0x00, it means the shutdown instruction issued by the control system. The detection device will give the shutdown instruction in the binary output and send back the control instruction.

example 3

[0027] Example 3: The detection device collects its own binary input state from time to time. If the control system sends an emergency power-off to the detection device, the detection device will get the emergency power-off binary input value from the CPLD register, and then send its own binary output value---power-off indication to the control device through the cable network. system. The CPLD in the control system will store data in its internal registers for the main chip of the control system to obtain data values.

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Abstract

The invention discloses an equipment equivalent detection device. The equipment equivalent detection device comprises a DSP, a CPLD, a power source, a serial port communication interface and a cable interface, wherein a control instruction of an equipment control system is received by the DSP through the serial port communication interface, relevant motion is executed, an instruction is further returned to the equipment control system, self hardware input is acquired by the equipment control system, on the basis, whether sending and reception of the control instruction are normal is determined; hardware output of the equipment control system is received by the CPLD through the cable interface, and the hardware output is coded by the CPLD to acquire hardware input; the hardware input is acquired by the DSP, corresponding hardware output is acquired according to pre-determined linkage relationships, the hardware output is returned by the CPLD through the cable interface to the equipment control system, the hardware output is decoded by the equipment control system to acquire hardware input, and thereby whether instruction execution is normal is determined on the basis. The device is advantaged in that direct detection on the equipment can be avoided, an equipment state can be represented through a state of an equivalent detection device, and strong reliability and good universality are realized.

Description

technical field [0001] The invention belongs to the technical field of automatic control, and in particular relates to a device equivalent detection device. Background technique [0002] For a type of equipment that requires very high reliability, it is necessary to check whether its communication is normal before it is officially used; after it is used, it is necessary to check whether its control is normal. Because the content and requirements to be tested are quite different from those of ordinary equipment testing devices, it is not suitable to directly use the equipment in use for docking. There is an urgent need for an equipment equivalent detection device, so that the equipment control system can judge whether the instructions issued by itself and the response to the instructions are correct according to the state of the equipment equivalent detection device. Contents of the invention [0003] Aiming at the above defects or improvement needs of the prior art, the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/21015
Inventor 成于思查坤周苏茂卢联杰汤恒曾文斌陈彬彬
Owner HUBEI SANJIANG AEROSPACE WANFENG TECH DEV
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