Distance determination method and apparatus, terminal, computer readable storage medium

By correcting the time difference between the reception and transmission times of the ultrasonic signal and using a synchronization error correction method, the ranging error problem between the measuring device and the device under test was solved, achieving higher accuracy ranging.

CN115390014BActive Publication Date: 2025-11-11BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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Patent Information

Application Number
CN202210945276.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-08-08
Publication Date
2025-11-11
Estimated Expiration
2042-08-08

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Abstract

The application provides a distance determination method and device, which can comprise: determining a synchronization error of signal transmission between the measuring device and the device to be measured, and determining a sending time of an ultrasonic signal sent by the device to be measured; determining a receiving time of the ultrasonic signal; and determining a distance between the device to be measured and the measuring device according to the receiving time, the sending time and the synchronization error. Through the technical solution of the application, the measuring device determines the synchronization error of signal transmission between the measuring device and the device to be measured, and then, when the device to be measured is measured according to the time length of ultrasonic signal transmission between the device to be measured and the measuring device, the synchronization error can be used to correct the time difference between the receiving time and the sending time of the ultrasonic signal, thereby improving the accuracy of the distance between the device to be measured and the measuring device determined according to the time difference.
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Citation Information

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