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Safety-instrument data processing diagnosis circuit and method based on microcontroller redundancy technology

A technology of microcontrollers and safety instruments, applied in program control, computer control, general control systems, etc., can solve problems such as corporate and social economic losses, and achieve the effect of ensuring stable and safe operation and improving safety and reliability.

Inactive Publication Date: 2014-07-02
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

In addition, non-traditional security application fields should be added. Once a security incident occurs, it will bring huge economic losses to the enterprise and society.

Method used

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  • Safety-instrument data processing diagnosis circuit and method based on microcontroller redundancy technology
  • Safety-instrument data processing diagnosis circuit and method based on microcontroller redundancy technology
  • Safety-instrument data processing diagnosis circuit and method based on microcontroller redundancy technology

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] The present invention relates to following several key technologies:

[0024] 1) Serial communication technology. This design describes the intelligent safety instrument transmitter processor communication and diagnostic circuit.

[0025] 2) Cyclic redundancy check, data communication between microcontroller 1 and microcontroller 2 adopts cyclic redundancy check technology, which can detect errors that occur during data transmission and communication.

[0026] 3) Diagnosis technology, processor 1 performs data collection and transformation, and sends the data to processor 2 through the serial interface; processor 2 reprocesses and transforms the original data, and compares it with the result of processor 1 to realize Diagnosis of treatment results.

[0027] As an important part of the safety instrument transmitter, the invention is u...

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Abstract

The invention relates to a safety-instrument data processing diagnosis circuit and method based on a microcontroller redundancy technology and specifically relates to a design circuit of a double-processor serial control framework in an intelligent safety instrument transmitter of an industrial control system. In terms of function, the double-processor serial framework realizes simulation quantity data acquisition processing and HART communication processing and at the same time compares processing data so as to realize mutual diagnosis and find out errors of processing results, resulted from data errors and thus error signals are prevented from being output and operation safety of a system is ensured. The design has the characteristics of being high in practicality, wide in applicable scope, low in cost and great in diagnosis effect and the like.

Description

technical field [0001] The invention relates to an instrument transmitter data processing diagnosis circuit and method based on microcontroller redundancy technology. Specifically, it involves the design circuit of the dual-processor serial control architecture in the intelligent safety instrument transmitter of the industrial control system. Background technique [0002] Safety instrument transmitters are instrument transmitters specially designed for demanding tasks or safety-related applications. If the safety instrument transmitter does not work normally or is damaged, it will cause some functions of the control system to stop working or even the entire system to collapse, which will seriously endanger the safety of workers. [0003] Industries that use safety instrument transmitters include oil / gas industry, petrochemical industry, oil refining industry, hazardous chemical industry, coal mine industry, shipbuilding, power plant, incineration treatment, machinery indust...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042G05B23/02
Inventor 于海斌徐皑冬康凯白占元闫炳均王志平宋岩刘梁梁
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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