利用反射式近红外传感器及语音录放组件，研究了汽车倒车防撞语音提示器。

Using reflective near infrared sensor and voice record-reproducing assembly, the present article studies the voice anticollision-prompting device for backing an automobile.

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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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本实用新型涉及一种汽车倒退防撞报警装置，特别适用于超声波传感器的报警装置。

The utility model relates to an automobile falling back colliding preventing alarm device which is an alarm device especially suitable for ultrasonic sensors.

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