Based on ultrasonic measuring distance 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。
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.
该系统具有现场无须带电、安全可靠、数据远距离传输、测量精度高等优点，并给出了该系统的现场应用情况。
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