Circuit and method for processing ultrasonic echo signal of reversing radar
A technology of echo signal and reversing radar is applied in the field of reversing radar devices, which can solve the problems such as false alarms that are prone to occur in the reversing radar device, and achieve the effects of stable product performance, simple electronic circuit and cost control.
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[0037] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0038] see image 3 , is the principle diagram of the first embodiment of the ultrasonic echo signal processing circuit of the parking radar according to the present invention. Such as image 3 As shown, the reversing radar ultrasonic echo signal processing circuit provided by the first embodiment is realized by using a voltage comparator 10 . The signal processing circuit mainly includes a voltage comparator 10 , a timer module 20 and a reference voltage generation module 30 .
[0039] Wherein, the timer module 20 is used to record the propagation time of the ultrasonic wave. The ultrasonic wave propagation time refers to the time for the ultrasonic wave to propagate in the medium from when the reversing radar device sends the ultrasonic wave to...
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