Multi- sensor system fault self-diagnosis method

Abstract

The invention provides a fault self-diagnostics method for multi-sensor system, which includes the following steps: firstly, carrying out linear analysis to the information obtained from each sensor of the multi-sensor system having relativity output, and then comparing corresponding relativity and setting threshold value to realize sensor array fault self-diagnostics of the multi-sensor, wherein, as the number of the sensor having relativity output is two, fault-diagnostics of the sensor system can be realized thereby providing alarm information; as the number of the sensor having relativityoutput is three, fault-diagnostics of the sensor system can be realized thereby providing alarm information and isolating the fault to guarantee normal operation of the system. The effects of the invention are that self-diagnostics, alarm and fault-isolation for the sensor are realized and single system for monitoring sensor operation status is saved thereby simplifying the system configuration and increasing stability of the self-diagnostics system through using the relativity between the information measured by each sensor in the multi-sensor system and using multi-channel measuring signal.

Description

A Fault Self-Diagnosis Method for Multi-sensor System technical field The invention relates to a multi-sensor system fault self-diagnosis method, which can be used for fault diagnosis, alarm and fault isolation of the multi-sensor system. Background technique In the field of industrial monitoring, it is usually necessary to use a multi-sensor system to monitor the same measurement object or different measurement objects with correlations synchronously to achieve information complementation and fusion, to expand the application field of sensors, to broaden the measurement range, and to improve measurement accuracy. and robustness. However, the increase in the number of sensors not only increases the complexity of the measurement system, but also increases the failure probability of the system. Therefore, the above factors put forward higher requirements for the fault diagnosis capability of the multi-sensor system itself, so as to ensure the reliability of process monitori...

AI Technical Summary

Problems solved by technology

Usually, an additional detection unit can be used to monitor the working status of the sensor, but this method not only increases the system complexity and system construction cost, but also introduces new unreliable factors, such as the working status of the detection unit

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