Non-intelligent fire alarm detector fault detection method and system

Abstract

The invention relates to a non-intelligent fire alarm detector fault detection method and system. A detection loop is tour-inspected by the fire alarm host of a non-intelligent fire alarm detector, and existence of a fault in the detection loop is judged; and if the fault exists, a current transformer acquires tour inspection current pulse signals outputted by the pedestal module in the detection loop and transmits the tour inspection current pulse signals to a waveform display module, and the tour inspection current pulse signals are converted into voltage pulse signals and displayed by the waveform display module. When the fault occurs in the pedestal module, waveform graphs have corresponding distinguishing characteristics, and the position of the pedestal module with the fault and the corresponding state of the pedestal module can be clearly judged according to the distinguishing characteristics of the waveform graphs so that users are enabled to directly detect and diagnose the detection loop.

Description

technical field [0001] The present invention relates to the field of non-intelligent fire alarm detectors, more specifically, to a non-intelligent fire alarm detector fault detection method and system. Background technique [0002] Nuclear power plants have a high risk of fire. Once a fire accident occurs, radioactive substances are prone to leak. If it is not effectively controlled, it will not only cause major economic losses, but may also endanger nuclear safety and cause nuclear accidents. Therefore, in nuclear power plants The prediction of fire alarm is very important. At present, in Daya Bay Nuclear Power Plant and Ling Ao Nuclear Power Plant, non-intelligent probes are used for fire detection. The non-intelligent probe itself does not have an independent ID (Identity: identification number) address. The intelligent probe gives different response information representing the status of the probe according to the environment on site. After the fire alarm host receives ...

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Problems solved by technology

However, its disadvantage is that once a complex fault occurs somewhere in the overall circuit of the probe, and the fire alarm host cannot recognize the fault information in the inspection, the fire alarm host will only report the failure of the entire probe circuit and cannot give The specific fault points in the loop can only be checked one by one for the probe loop. The inspection workload is large and inefficient, which affects the availability of the system; at the same time, the detection time is too long, which may cause unpredictable problems during the detection process. estimated loss

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