The intelligent pressure sensor is to process the electrical signal output by the pressure sensor and display the pressure after information processing. The intelligent pressure sensor based on the single-chip technology is popularized because of its convenient use and accurate measurement. Looking at the current domestic smart pressure sensor market, although there have been many claims that it can be produced, the product technology needs to be improved. In summary, it can be summarized as the following four points:

　　First, how to encrypt the transmitter and ensure the authority of various setting data is a problem. The current smart pressure sensor data has no confidentiality function and cannot be applied in many cases;

    Second, how to reduce the power supply requirements of the transmitter when communicating. On-site debugging and maintenance of intelligent pressure sensors is also a problem that needs to be solved urgently;

    Third, how to separate other information measured by the transmitter, such as ambient temperature, process medium static pressure, differential pressure value, etc., which can be displayed on the smart terminal, so that it can be used for one table;

    The fourth is how to break through the separate situation in the communication protocol of the intelligent pressure sensor and realize the standardization and openness of communication.

    The application of smart pressure sensors is more and more extensive and in-depth, and can integrate multiple functions into one. Compared with ordinary pressure sensors, although the price is higher, the signal-to-noise ratio, resolution, flexibility, adaptability, accuracy Etc. have great advantages.