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Ranging method and device, terminal and storage medium

A distance measurement method and distance technology, applied in the electronic field, can solve the problems of reduced accuracy, difficulty in detecting distance, and large minimum distance, etc., to achieve the effect of reducing clock asynchrony, reducing multipath interference, and improving accuracy

Pending Publication Date: 2021-06-04
BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The infrared ranging method has good consistency, low cost and fast response speed, but the minimum detection distance of this method is relatively large, and it is difficult to detect the distance for objects with strong light absorption
However, distance measurement by electromagnetic waves is costly and susceptible to electromagnetic interference.
Among them, acoustic ranging is an easy-to-implement and low-cost solution, but it is easily affected by multipath effects and reduces accuracy.

Method used

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  • Ranging method and device, terminal and storage medium
  • Ranging method and device, terminal and storage medium
  • Ranging method and device, terminal and storage medium

Examples

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Embodiment Construction

[0064] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

[0065] figure 1 is a flow chart of a ranging method shown according to an exemplary embodiment, such as figure 1 As shown, the method is applied to the first device, comprising:

[0066] Step S101, receiving radio signals and sound wave signals transmitted by the second device;

[0067] Step S102. Determine the transmission time of the sound wave signal according to the first reception time o...

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Abstract

The invention relates to a ranging method and device, a terminal and a storage medium. The ranging method is applied to a first device and comprises the steps of receiving a radio signal and a sound wave signal transmitted by a second device; determining the transmission time of the sound wave signal according to the first receiving time of the radio signal and the second receiving time of the sound wave signal; and determining the distance between the first device and the second device according to the transmission time of the sound wave signal. According to the technical scheme of the embodiment of the invention, a signal receiver receives the radio signal and the sound wave signal, calculates the transmission time of the sound wave signal based on the receiving time of the radio signal and the sound wave signal, and further determines the sound wave transmission distance. And compared with a mode of distance measurement by using sound waves back and forth, the interference of a multipath effect is reduced, and the measurement accuracy is improved.

Description

technical field [0001] The present disclosure relates to the field of electronic technology, and in particular, to a ranging method and device, a terminal, and a storage medium. Background technique [0002] Wireless ranging is widely used in the field of electronic equipment. In short-distance ranging, more commonly used methods include: infrared ranging, electromagnetic ranging, and acoustic ranging. The infrared ranging method has good consistency, low cost and fast response speed, but the minimum detection distance of this method is relatively large, and it is difficult to detect the distance for objects with strong light absorption. However, distance measurement through electromagnetic waves is expensive and susceptible to electromagnetic interference. Among them, acoustic ranging is a solution that is easy to implement and low in cost, but is easily affected by multipath effects and thus reduces accuracy. Contents of the invention [0003] The disclosure provides a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S11/14G01S11/02
CPCG01S11/14G01S11/02
Inventor 史润宇王凯
Owner BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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