The electronic water meter consists of a signal base meter, a main control circuit, and a water meter valve.
The base signal is to install a signaling device in an ordinary mechanical water meter to provide a metering signal to the electronic main control circuit of the water meter to realize automatic measurement of water.
The main control circuit is used to control the switching of the water inlet valve to achieve the purpose of controlling the water for consumers.
The switch of the water meter valve refers to the fact that the CPU turns on the switch electrical circuit according to the switch condition. The detection of low voltage power is a very important problem for the system of the single chip microcomputer. To some extent, it can guarantee the reliability of the system. Run, avoid the role of data transmission errors.
The information display of the electronic water meter can be completed by the serial liquid crystal module. The serial liquid crystal module and the CPU have a simple interface, occupying only three interface lines, and greatly saving resources.
Pulse signals should be treated as anti-shake when the software is designed.
