Application of PLC soft redundancy in monitoring and control system for ventilator

WANG Qianjin; MA Xiaoping; ZHANG Shoutia

doi:10.13272/j.issn.1671-251x.2014.01.025

Volume 40 Issue 1

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WANG Qianjin, MA Xiaoping, ZHANG Shoutia. Application of PLC soft redundancy in monitoring and control system for ventilator[J]. Industry and Mine Automation, 2014, 40(1): 93-96. doi: 10.13272/j.issn.1671-251x.2014.01.025

Citation:

WANG Qianjin, MA Xiaoping, ZHANG Shoutia. Application of PLC soft redundancy in monitoring and control system for ventilator[J]. Industry and Mine Automation, 2014, 40(1): 93-96. doi: 10.13272/j.issn.1671-251x.2014.01.025

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Application of PLC soft redundancy in monitoring and control system for ventilator

doi: 10.13272/j.issn.1671-251x.2014.01.025

School of Information and Electrical Engineering, China University of Mining and Technology, Xuzhou 221008, China

Publish Date: 2014-01-10

Abstract

Abstract

In view of safety problem existed in monitoring and control system for ventilator that uses a single PLC to control operation, a scheme of software redundancy composed by two PLCs was proposed in the paper. One PLC is used as master station, controls the ventilator control system, and carries out non-redundant program which does not need data synchronization process and completes redundancy program of control functions, alarm, analog; and the other PLC is used as reserve station to perform only non-redundancy program. The application of PLC software redundancy system improves reliability of monitoring and control system for ventilator, and meets needs of safety production.
- ventilator,
- monitoring and control,
- soft redundancy,
- master station,
- reserve station,
- PLC,
- MCGS