Fault monitoring system of gas detector

Abstract

The invention discloses a fault monitoring system of a gas detector. The fault monitoring system of the gas detector comprises a single chip microprocessor internally integrated with an A / D (Analogue / Digital) conversion module, a main power supply loop current-detecting circuit, a sensor power supply loop current-detecting circuit and a gas pump power loop current-detecting circuit, wherein the main power supply loop current-detecting circuit, the sensor power supply loop current-detecting circuit and the gas pump power loop current-detecting circuit are respectively connected with the single chip microcomputer; the main power supply loop current-detecting circuit comprises a current-detecting integrated circuit board U103, a current-detecting resistor C101 connected with the current-detecting integrated circuit board U101, and a filtering circuit; the sensor power supply loop current-detecting circuit comprises a current-detecting integrated circuit board U103, a current-detecting resistor C101 connected with the current-detecting integrated circuit board U103, and a filtering circuit; and the gas pump power loop current-detecting circuit comprises a current-detecting integrated circuit board U103, a current-detecting resistor C101 connected with the current-detecting integrated circuit board U103, and a filtering circuit. The fault monitoring system provided by the invention can detect and judge whether a plurality of important components are in a fault state or not in real time, and further can effectively detect a fault within a foreknown range; and furthermore, the reliability of the probe can be enhanced.

Description

technical field [0001] The invention relates to a fault monitoring system for a gas detector, and is especially suitable for fault monitoring of multiple key components inside the gas detector. Background technique [0002] The gas detector products currently on the market generally only judge whether the sensor component is faulty through the abnormality of the output signal of the sensor component, so as to issue a detector failure alarm. This detection and failure alarm technology is relatively simple and cannot detect failures of other components of the detector. Especially for some more complex gas detectors with more key components, such as pump-suction detectors, the original detection technology cannot detect the failure of multiple key components, and cannot guarantee that the instrument works in a normal state. Contents of the invention [0003] In order to solve the problem that the existing gas detector fault detection technology is single and the detection ra...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the existing gas detector fault detection technology is single and the detection range is narrow, the invention provides a gas detector fault monitoring system, which can detect and judge in real time whether multiple key components of itself are in a fault state, or even Some faults that are not within the predictable range can also be effectively detected, which enhances the reliability of the detector

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