Gas alarm and solenoid valve status detection method

CN122245037APending Publication Date: 2026-06-19ZHEJIANG WEIXING INTELLIGENT METER STOCK

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner: ZHEJIANG WEIXING INTELLIGENT METER STOCK
Filing Date: 2026-03-31
Publication Date: 2026-06-19

AI Technical Summary

Technical Problem

In existing gas alarm and solenoid valve systems, the solenoid valve status feedback signal is insufficient, resulting in inconsistencies between user manual operation and system status. Furthermore, the lack of accurate status detection methods affects safety and intelligent control.

Method used

Design a gas alarm that includes a microcontroller, an excitation circuit, and a sampling circuit. By controlling the excitation voltage of the solenoid valve coil and detecting the sampling voltage, the state of the solenoid valve is determined using a voltage threshold, including the states of short circuit, open circuit, open valve, and closed valve.

Benefits of technology

It achieves accurate feedback on the status of the solenoid valve, improves the compatibility of the solenoid valve and the reliability of the system, ensures effective linkage between the gas alarm and the solenoid valve, and supports intelligent control and remote communication.

✦ Generated by Eureka AI based on patent content.

Smart Images

Figure CN122245037A_ABST

Patent Text Reader

Abstract

This disclosure provides a gas alarm and a method for detecting the status of a solenoid valve. The gas alarm includes an excitation circuit, a sampling circuit, and a microcontroller. The excitation circuit receives a control signal and provides an excitation voltage to the coil when the control signal is valid; when the control signal is invalid, it stops providing the excitation voltage to the coil. The sampling circuit samples the voltage drop across the coil to obtain the coil sampling voltage. The microcontroller determines that the control signal is valid at the beginning of the detection cycle, acquires the coil sampling voltage at the detection time of the detection cycle to obtain the coil detection voltage, and determines that the control signal is invalid. It can also determine the solenoid valve status based on the coil detection voltage, a first voltage threshold, a second voltage threshold, and a third voltage threshold. This gas alarm can accurately feedback the solenoid valve status (whether the connection is short-circuited, open-circuited, open, or closed) and improves compatibility with solenoid valves.

Need to check novelty before this filing date? Find Prior Art