Application of ultrasonic transducer array for obstacle detection technology in unmanned automobile

作者：Pan Zhong Ming^*; He Han Gen

来源：Journal of National University of Defense Technology, 2009, 31(2): 121-125.

• Coding techniques
• Multi-target orientation
• Obstacle detection
• Obstacle detection system
• Synthetical aperture (SA)
• Test results
• Theoretical calculations
• Ultrasonic array
• Ultrasonic pulse
• Ultrasonic transducer array

An ultrasonic obstacle detection system for mounting on the front bumper of an automobile was designed. Using an omnibus ultrasonic transducer array and ultrasonic pulse coding techniques, an algorithm for collision identification was formulated based on a synthetic aperture to discriminate between echoes constituting real threats and those that do not. Theoretical calculation and test results show that the detectable diameter of flat boards is 15mm, and the active range is between 0.2 ~ 25m. Furthermore, the multiple obstacles in front of the automobile can be located simultaneously.

• 出版日期2009