Infrared photoelectricity geminate transistor open-circuit fault on-line detection method

Abstract

The invention discloses an infrared photoelectricity geminate transistor open-circuit fault on-line detection method. The infrared photoelectricity geminate transistor open-circuit fault on-line detection method comprises the following steps of: detecting whether the circuit of a receiving transistor is open, and detecting whether the circuit of a transmitting transistor is open. The aim of detecting whether the circuit of infrared photoelectricity geminate transistor is open is achieved by utilizing semiconductor material characteristics of a parasitic capacitor of the receiving transistor, transmitting transistor electrifying and emitting and the like through singlechip embedded-type software programming control. Whether circuits of the receiving transistor and the transmitting transistor of the infrared photoelectricity geminate transistor are open is detected by adopting the method before meter reading, so that information is provided for the error correction of electronic reading, the consistency of the machine and electricity reading is ensured, and the metering correction is prevented.

Description

technical field [0001] The invention belongs to the field of information processing in the metering industry, and in particular relates to an infrared photoelectric on-line detection method for tube open circuit faults. Background technique [0002] In the remote meter reading mode of smart water meters and smart gas meters, the mechanical character wheel readings are converted into electronic readings. In the conversion process of mechanical and electrical readings, infrared photoelectric direct-reading sensors are widely used. When copying electronic readings, infrared photoelectric tubes are required to work normally. Once an infrared photoelectric tube is open, the signal sampling system cannot judge whether the electronic readings are in progress. Is the no signal at the corresponding position of the infrared photoelectric pair tube caused by an open circuit fault or the actual position of the sensor itself; The readings of the mechanical character wheels on the watch ...

AI Technical Summary

Problems solved by technology

In the conversion process of mechanical and electrical readings, infrared photoelectric direct-reading sensors are widely used. When copying electronic readings, infrared photoelectric tubes are required to work normally. Once an infrared photoelectric tube is open, the signal sampling system cannot judge whether the electronic readings are in progress. Is the no signal at the corresponding position of the infrared photoelectric pair tube caused by an open circuit fault or the actual position of the sensor itself; The readings of the mechanical character wheels on the watch are inconsistent, and no correction information can be obtained, causing measurement disputes

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