Fuel gas cut-off alarm capable of sensing flow, pressure, temperature and human body

Abstract

The fuel gas cut-off alarm comprises a valve body, an opening and closing mechanism, a human body sensor, an ultrasonic transducer and a control module, the valve body is provided with a through hole for fuel gas to pass through, the opening and closing mechanism used for opening and closing the through hole is installed on the valve body, the human body sensor is installed outside the valve body, and the ultrasonic transducer is installed on the valve body. The human body sensor is used for sensing whether people are around or not, an ultrasonic transducer is installed on the valve body and used for detecting the flow speed of fluid in the through hole, and the opening and closing mechanism, the human body sensor and the ultrasonic transducer are all connected to the control module. The control module is used for controlling the opening and closing mechanism to execute opening and closing actions according to detection of the human body sensor and the ultrasonic transducer. The fuel gas cut-off alarm with the flow, pressure and human body sensing function solves the problem that in the prior art, fuel gas circulation cannot be automatically cut off after it is sensed that no person exists for a long time.

Description

technical field [0001] The invention relates to a gas alarm, in particular to a gas cut-off alarm with flow, pressure, temperature and human body perception. Background technique [0002] At present, due to aging and changes in living habits, the number of elderly people living alone is increasing. The memory of the elderly is poor, and they often forget to turn off the gas during gas use. At the same time, due to the acceleration of the pace of life, young housewives tend to forget to use fire in the kitchen due to halfway work. The current gas cut-off valve only has overpressure, overcurrent, or overtemperature cutoff, or gas leakage cutoff, but it cannot solve the problem of The issue of safe use of fire in the kitchen where people are on duty, [0003] In order to avoid the above problems, the existing technology has also developed a gas emergency cut-off valve, which can cut off the gas in an emergency, but it needs to be manually judged whether the situation is urgent...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a gas cut-off alarm with flow, pressure, temperature and human body perception, which solves the problem in the prior art that the gas flow cannot be automatically cut off after a long period of unattended sensing

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