Intelligent water meter on-off valve control ​

The switch of water meter valve is realized by CPU regularly turning on the switching electrical circuit according to certain switching conditions. Two key points should be mastered in the design of on-off valve control: one is to control the current output time of on-off valve circuit in software, that is, the circuit conduction time is too long, and the battery consumes too much energy; The time is too short to reliably open and close the valve. Second, there should be an energy storage circuit for closing the valve on the hardware circuit. When the power supply loses power, the circuit can release electric energy in time and close the valve.