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US 12,216,204 B2Granted
Method and device for measuring distance, and storage medium
AssigneeBeijing Xiaomi Mobile Software Co., Ltd.
InventorsKai Wang, Runyu Shi
Life of this patent
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Abstract
The present disclosure is related to a method and device for measuring a distance and a storage medium. The method for measuring the distance includes determining a distance between a first device and a second device based on a first time difference and a second time difference, where the first time difference is between a time of receiving a first detection signal by the first device and a time of receiving a second detection signal by the first device, and the second time difference is between a time of receiving the first detection signal by the second device and time of receiving the second detection signal by the second device.
Claims20
A method for measuring a distance, applied to a first device, comprising:
- sending a first detection signal;
- determining a time difference, between a time of receiving the first detection signal by the first device and a time of receiving a second detection signal by the first device, as a first time difference, wherein the second detection signal is sent by a second device in response to the second device receiving the first detection signal;
- obtaining a second time difference from the second device, the second time difference being a time difference between a time of receiving the first detection signal by the second device and a time of receiving the second detection signal by the second device;
- and
- determining the distance between the first device and the second device based on the first time difference and the second time difference;
- wherein the first detection signal is modulated and sent by the first device using a first carrier frequency;
- the second detection signal is modulated and sent by the second device using a second carrier frequency;
- the second time difference is characterized by a data encoding signal, and the data encoding signal is modulated and sent by the second device using a third carrier frequency;
- and the first carrier frequency, the second carrier frequency, and the third carrier frequency are different from each other;
- and
- wherein the method further comprises:
- receiving each of the modulated first detection signal, the modulated second detection signal, and the modulated data encoding signal via a band-pass filter.
9 more elements
A first device for measuring a distance, comprising:
- a processor, and
- a memory storing one or more executable instructions for the processor, wherein
- the processor is configured to:
- send a first detection signal;
- determine a time difference, between a time of receiving the first detection signal by the first device and a time of receiving a second detection signal by the first device, as a first time difference, wherein the second detection signal is sent by a second device in response to the second device receiving the first detection signal;
- obtain a second time difference from the second device, the second time difference being a time difference between a time of receiving the first detection signal by the second device and a time of receiving the second detection signal by the second device;
- and
- determine the distance between the first device and the second device based on the first time difference and the second time difference;
- wherein the first detection signal is modulated and sent by the first device using a first carrier frequency;
- the second detection signal is modulated and sent by the second device using a second carrier frequency;
- the second time difference is characterized by a data encoding signal, and the data encoding signal is modulated and sent by the second device using a third carrier frequency;
- and the first carrier frequency, the second carrier frequency, and the third carrier frequency are different from each other;
- and
- wherein the processor is further configured to receive each of the modulated first detection signal, the modulated second detection signal, and the modulated data encoding signal via a band-pass filter.
11 more elements
A non-transitory computer readable storage medium, wherein one or more instructions in the storage medium, when executed by a processor of a first device, enable the first device to perform following acts:
- sending a first detection signal;
- determining a time difference, between a time of receiving the first detection signal by the first device and a time of receiving a second detection signal by the first device, as a first time difference, wherein the second detection signal is sent by a second device in response to the second device receiving the first detection signal;
- obtaining a second time difference from the second device, the second time difference being a time difference between a time of receiving the first detection signal by the second device and a time of receiving the second detection signal by the second device;
- and
- determining the distance between the first device and the second device based on the first time difference and the second time difference;
- wherein the first detection signal is modulated and sent by the first device using a first carrier frequency;
- the second detection signal is modulated and sent by the second device using a second carrier frequency;
- the second time difference is characterized by a data encoding signal, and the data encoding signal is modulated and sent by the second device using a third carrier frequency;
- and the first carrier frequency, the second carrier frequency, and the third carrier frequency are different from each other;
- and
- wherein the first device is enabled to further perform following acts:
- receiving each of the modulated first detection signal, the modulated second detection signal, and the modulated data encoding signal via a band-pass filter;
- wherein the first device is a mobile terminal.
10 more elements
Dependencies are inferred from the claim text.