Ultrasonic radar automatic calibration system and method thereof

Abstract

The invention provides an ultrasonic radar automatic calibration system. An upper computer is in communication connection with a radar HUT, and the upper computer comprises an excitation module, a feedback module and a solving module; the excitation module is used for sequentially sending the sensor signal threshold value of each distance segment to the HUT; the feedback module is used for receiving ultrasonic radar detection result information sent back by the HUT; the solving module carries out solving operation according to excitation information sent by the excitation module and result information extracted by the feedback module to obtain optimal sensor threshold values of all distance segments; and the optimal sensor threshold value is finally written into the HUT through the excitation module, and automatic calibration of the automobile ultrasonic radar sensor is achieved. According to the invention, automatic calibration is realized, the continuous trial and error cost during manual calibration is saved, and the purposes of cost saving and high-efficiency development and designing are achieved; and meanwhile, the calibration result can be visually output, and an alarm can be timely given.

Description

technical field [0001] The invention relates to the technical field of vehicle sensor calibration, in particular to an automatic calibration system and method for a vehicle-mounted ultrasonic radar. Background technique [0002] In recent years, with the rise of autonomous driving, the development of autonomous vehicles has increased. The sensor is the key to ensuring the intelligence of the vehicle, which has led to more and more sensors serving autonomous driving on the vehicle, especially the ultrasonic radar sensor used for distance measurement and obstacle avoidance, which is more and more widely used. In production, it is necessary to calibrate the ultrasonic radar to ensure its reliability, which is a necessary consideration for safety. [0003] Especially in the initial stage of vehicle development, according to the different layout schemes of ultrasonic radar sensors, it is often necessary to calibrate ultrasonic radar parameters separately for different models. D...

AI Technical Summary

Problems solved by technology

Because the calibration involves different scenarios, a lot of manual debugging is required before the optimal configuration can be selected.

The calibration work is cumbersome and time-consuming, and the workload is very heavy, making it difficult to meet the requirements

In addition, the calibration results are not intuitive and objective enough

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