① The pressure sensor adopts single crystal silicon intelligent pressure sensor. This sensor has the characteristics of high precision (± 0.075%), high stability (better than 0.1% fs/year), resistance to high overpressure and high static pressure (withstand pressure of 16 MPa), and large range transfer ratio (20:1). The use of monocrystalline silicon intelligent pressure sensors as sensing components ensures the control accuracy and reliability of intelligent electronic pressure switches.

② The signal conditioning part is composed of integrated operational amplifiers and electronic components, which condition the pressure sensor signal into a signal that can be accepted by the microcomputer and sent to the microcomputer.

③ The microcomputer adopts a low-power embedded microcontroller c8051f007, which has the characteristics of low power supply voltage (2.7-3.6v), low power consumption (can be less than 1ma), small size (8mm × 8mm), and strong functionality. This microcontroller has a 12 bit ADC, 35 6bram, and 32k flash MCU. The microcomputer analyzes, processes, and memorizes the collected pressure signals, eliminates interference and pressure fluctuations, and sends out the correct pressure switch status signal.

④ The electronic switch converts the pressure switch status signal sent by the microcomputer into the conduction and disconnection of the intelligent electronic pressure switch.

⑤ Calibration button, when calibrating the intelligent electronic pressure switch, simply press the "calibration button", and the microcomputer will automatically remember the current pressure value and use it as the set value of the intelligent electronic pressure switch, thereby achieving intelligent calibration of the pressure switch.

⑥ The process selection switch can be set with different threshold values for the side tank process and the closed process. The threshold value for the side tank process can be appropriately reduced, thus overcoming the problem of the pressure switch not being able to be used in the side tank process.