超声波传感器是一种利用超声波的特性研制而成的传感器。超声波是一种振动频率高于声波的机械波,由换能晶片在电压的激励下发生振动产生的,它具有频率高、波长短、绕射现象小,特别是方向性好、能够成为射线而定向传播等特点。
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介绍了基于激光测距传感器的铁轨测距系统的设计原理。
This thesis recommends the design for principle that the distance measurement system of rail base on distance laser sensor.
该系统利用PLC作为控制核心,采用激光测距传感器来检测垂直焊缝。
In this system, the laser distant sensor is used to measure the vertical welding line and the PLC is used to control the system.
利用超声波智能测距传感器及语音录放电路,设计了机动车倒车防撞语音提示器。
Using ultrasonic wave intelligent distance-measuring sensor and voice record-reproducing circuit, a voice anticollision-prompting device for backing an automobile is designed.
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