Cover opening processing circuit supporting MCU downtime working condition and gas meter

• Main Authors: HUANG HUABING, WANG XIAOFENG, LI NAN, LIU XIAOFENG, FENG HAN
• Format: Patent
• Language: Chinese; English
• Published: 17.11.2023
• Subjects: MEASURING; MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL; METERING BY VOLUME; PHYSICS; TESTING

The utility model relates to the technical field of gas meters, in particular to an uncovering processing circuit supporting MCU downtime working conditions, which comprises an uncovering detection circuit, an uncovering processing circuit, an uncovering processing circuit and a control circuit, the valve driving circuit is connected with the valve and used for sending a closing signal to the valve; and the signal conversion circuit is connected with the cover opening detection circuit and the valve driving circuit, converts a level signal of the cover opening detection circuit into a pulse signal, and sends the pulse signal to the valve driving circuit. The signal conversion circuit can be applied to the gas meter, replaces an original MCU processing mode, can directly convert a cover opening detection signal into a valve driving signal, is not limited by the working stability of the MCU any more, and can complete valve driving during cover opening even if the MCU is down. 本实用新型涉及燃气表技术领域，尤其涉及一种支持MCU宕机工况的开盖处理