A Signal Processing Method to Measure Distance and Target Recognition of Ultrasonic Sensing System

• Main Authors: Chieh-Jung Li, 李玠融
• Other Authors: Chao-Hung Chen
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/97234644265950838539

碩士 === 義守大學 === 電子工程學系 === 92 === The ultrasonic extensive application of signal is in a lot of places, this thesis mainly uses the ultrasonic signal to measure the distance and target recognition, in the structure of the system, have utilized a low cost and low power consumptive microcontroller - MSP430 as the operation core, our goal is constructing a system that is suitable for measuring the distance and target recognition with lower cost. The system of measuring distance is implementation, because of characteristic of the signal, we have used two kinds of different methods to process the received signal. The methods are the starting point of the received signal and the central point of the received signal. After system implementation is done, we find the method - starting point of the received signal have better performance. The system of target recognition is implementation. To establish the database of object characteristic we can achieve the goal of target recognition via compare the database. The database is established by different rough surface of target. The target recognition is limited between 40 cm and 50 cm at present. (Keyword: Ultrasonic, measure distance, target recognition)