Gas meter capable of being passively switched in power supplying

Abstract

The invention provides a gas meter capable of being passively switched in power supplying. The gas meter capable of being passively switched in power supplying comprises a control unit, or a door, a communication unit, a frequency voltage converter, a linear amplification circuit, a voltage comparison circuit and a power supply control circuit, wherein the communication unit comprises a serial port and is in communication connection with a control unit; or one input of the door is connected with the output end of the control unit, or the other input of the door is connected with the serial port end of the communication unit, or the output end of the door is connected with the input end of the frequency voltage converter, the output end of the frequency voltage converter is connected with the input end of the linear amplification circuit, the output end of the linear amplification circuit is connected with the input end of the voltage comparison circuit, and the output end of the voltage comparison circuit is connected with the input end of the power supply control circuit; and the power supply control circuit at least comprises two power supplying output ends with different voltages so as to supply power for a power utilization part of the gas meter. The voltages of the equipment at work and in idle are adjusted, so that the equipment consumption is reduced, and the cost is saved.

Description

technical field [0001] The invention relates to the field of gas meters, in particular to a gas meter capable of passively switching power supply. Background technique [0002] With the rapid development of social economy, the use of gas meters has become an indispensable part of people's daily life, but many problems will be found in the daily use of gas meters. In the existing gas meter technology field, no gas meter is used. , the device will disconnect from the metering system of the gas meter. When the metering system needs to work, the device needs to actively initiate network communication and re-establish a connection with the system. Cause greater power consumption, resulting in a lot of unnecessary waste. Contents of the invention [0003] Aiming at the deficiencies in the prior art, the invention provides a gas meter with reduced power consumption and passive switching of power supply. [0004] To achieve the above object, the present invention adopts the foll...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of social economy, the use of gas meters has become an indispensable part of people's daily life, but many problems will be found in the daily use of gas meters. In the existing gas meter technology field, no gas meter is used. , the device will disconnect from the metering system of the gas meter. When the metering system needs to work, the device needs to actively initiate network communication and re-establish a connection with the system. Causes a large power consumption, resulting in a lot of unnecessary waste

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