Ultrasonic radar speed measurement method, speed measurement circuit and electronic equipment

By performing low-noise amplification and analog-to-digital conversion on the ultrasonic echo signal, and combining it with the bandpass filter in the frequency shift extraction unit, the Doppler frequency shift of the target object is directly calculated, thus solving the delay and accuracy problems of ultrasonic radar velocity measurement and realizing fast and accurate velocity measurement.

CN122330896APending Publication Date: 2026-07-03INST OF FLEXIBLE ELECTRONICS TECH OF THU ZHEJIANG +1
0 Cites 0 Cited by

Patent Information

Application Number
CN202511821062.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-04
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing ultrasonic radar technology struggles to measure the speed of target objects quickly and accurately, especially in autonomous driving and robot navigation, where traditional methods suffer from large computational delays and low accuracy.

Method used

By performing low-noise amplification and analog-to-digital conversion on the ultrasonic echo signal reflected by the target object, and using multiple parallel bandpass filters in the frequency shift extraction unit to extract the Doppler frequency shift, the velocity of the target object can be directly calculated, avoiding the low velocity accuracy caused by delays and inaccurate ranging in traditional methods.

Benefits of technology

It achieves rapid and accurate determination of target objects, improving real-time performance and precision, and is suitable for collision warning and decision-making in autonomous driving and robot navigation.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention provides an ultrasonic radar speed measurement method, a speed measurement circuit and electronic equipment, and relates to the field of ultrasonic speed measurement. The invention discloses an ultrasonic radar speed measurement method. The method comprises the following steps: performing low-noise amplification on an ultrasonic echo signal reflected by a target object; performing analog-to-digital conversion processing on the amplified ultrasonic echo signal to obtain a digital echo signal; inputting the digital echo signal into a frequency shift extraction unit, and filtering the digital echo signal by a band-pass filter in the frequency shift extraction unit; the frequency shift extraction unit comprises a plurality of parallel band-pass filters, and the center frequency of each band-pass filter corresponds to one Doppler frequency shift; determining a target Doppler frequency shift corresponding to the digital echo signal based on the output signal amplitude of the band-pass filter; and determining the speed of the target object based on the target Doppler frequency shift. Therefore, the speed of the target object can be quickly and accurately determined.
Need to check novelty before this filing date? Find Prior Art