This article designs a liquid level measurement system with high accuracy and good display interface. It introduces the work principle of the liquid level detection system based on ultrasonic, designs the system structure of tank group detection system in which SCM is the core of the slave and PC as the host The transducer is selected based on the ultrasonic wave equation, the main design point and circuit of ultrasonic transmitter and receiver circuit is described. The PC software is developed by Kingview6.51 which can generate the display interface and level report, the centralized monitoring of tank group is realized. The measurement accuracy of liquid level is improved by temperature compensation and software reliability design. This article analyzed the error of level measurement according to theory and the test result.
展开▼
