Based on ultrasonic measuringdistance technology, a new method of detecting obstacle and giving a wide berth used in electric wheelchairs is presented.
根据超声波测距原理，提出一种基于超声测距技术的电动轮椅车检测障碍物、避障的新方法。
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The system has so many advantages such as measuring without electric power, good safety, far distance data transfering, and high precision. Some applications are given.