This graduation design mainly involves the design of ultrasonic electronic distance measuring instruments. As the ultrasonic point to strong, energy consumption is slow, the spread in the medium distance,it is often used in ultrasonic distance measurements, such as range finders and material level measurement instrument and so on can be achieved by ultrasound. Ultrasonic range finder can be applied to car parking, construction sites, as well as the location of a number of industrial on-site monitoring can also be used in liquid level, well depth, pipe length measurement occasions. The use of ultrasonic testing is often more rapid, convenient, easy to compute and easy to do real-time control, and measurement precision to achieve the requirements of industrial and practical, so the mobile robot has also been widely used.
The internship required measurements had no direct contact with the measured object, measuring the range of 0.06 ~ 3.00m, accuracy 1cm, using the MSP430F169 as the core controller, being able to clearly and stable measurement results with the LCD. And it can upload data to the PC, as well as control commands to download,with PC program using Visual C + + programming,achieving serial communication up and down position.
Keywords: Ultrasound;Ranging;Serial Communication ;Visual C++ ;MSP430F169