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超声波传感器是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。超声波对液体、固体的穿透本领很大,尤其是在阳光不透明的固体中,它可穿透几十米的深度。其检测性能几乎不受任何环境条件的影响,包括烟尘环境和雨天。
Ultrasonic sensor is the use of ultrasonic characteristics of the development of the sensor. Ultrasound is a mechanical wave whose vibration frequency is higher than that of sound wave. It is generated by the vibration of the transducer chip under the excitation of voltage. It has the characteristics of high frequency, short wavelength, small diffraction phenomenon, especially good directivity, Communication and other characteristics. Ultrasound on liquid, solid penetration ability, especially in the sun opaque solid, it can penetrate the depths of tens of meters. Its detection performance is almost unaffected by any environmental conditions, including the dust environment and rainy days.