Ranging System Based On MSP430MCU

Level measurement technology have an important position in industrial production occupieshave an important position, with the continuous development of industrial level measurementtechnology gradually changed from manual to automatic, and from the traditional unscientific tobe more scientific the measurement method. One of the most commonly used liquid levelmeasurement method is based on the microwave ranging system of ultrasonic level meter tolevel, level measurement. Ultrasonic level meter with low cost, technically less demanding jobstability, stable performance, easy to operate and other aspects of the characteristics are widelyused in measuring various fields. But its prevalent affected by environmental temperature islarge, the accuracy is not high aspects disadvantage. So the belt itself calibration function ofultrasonic level meter is of great significance. This paper mainly introduces microwave rangingsystem MCU of single chip microcomputer control module,4-20mA current conversion module,power supply module, solar power supply module, liquid crystal display module, booster circuitmodule, level3amplifying circuit module, temperature compensation system module, kalmanalgorithm data processing and so on several big key core module.First to complete the design of the single-chip control module, the distance to the measuredliquid level control module is mainly responsible for calculating the ranging system. The24Vpower supply module is the24V input voltage into the circuit requires several voltage values.The main purpose of the solar-powered module is a battery-powered remote areas unable topower. LCD module mainly convenient site for microwave ranging system parameter settings,and control of the data collected at the scene to the value in the control room. Followed by thecompletion of the the boost module circuit design, the voltage generated by the system to greatlyenhance the incentive probe is used to measure ultrasonic the ultrasonic after the measured liquidlevel, the return of the weak wave after three amplification circuit amplifies restore into SCMfurther calculations. Values on the data collected by the temperature compensation system usedin the calculation process to be corrected. Final use kalman algorithms further precise analysis ofthe measured values, and draw a relatively high accuracy level height value, height value through the4-20mA current conversion module into the current value is sent to the control roomlevel monitoring.Topics theoretical analysis of ultrasonic level meter, the hardware structure of the systemdesign, Kalman algorithm for data analysis, machine commissioning, to achieve the desiredgoals. Achieve a low error of measurement of liquid level environment, with a certain value inuse.