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Method and device of measuring distance between transmitter and receiver

A receiver and transmitter technology, applied in the field of data communication, can solve the problems of temperature field distribution, heat conduction time delay, hysteresis effect, and poor compensation method.

Active Publication Date: 2019-07-12
BEIJING XINWANG RUIJIE NETWORK TECH CO LTD
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The problem with the existing technology is that the compensation method of directly measuring the ambient temperature is not effective and has hysteresis effects due to the uncertainty of the temperature field distribution and the time delay of heat conduction

Method used

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  • Method and device of measuring distance between transmitter and receiver
  • Method and device of measuring distance between transmitter and receiver
  • Method and device of measuring distance between transmitter and receiver

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Embodiment Construction

[0083] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0084] The embodiment of the present invention provides a method for measuring the distance between a transmitter and a receiver, which is applied to a radio frequency communication unit having a receiver and a transmitter, such as figure 1 Shown, including:

[0085] S101, setting n temperature collection points, where n is a natural number greater than or equal to 2, and the temperature of each temperature collection point is within a pre...

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Abstract

The invention provides a method and a device of measuring a distance between a transmitter and a receiver. The method comprises steps of: setting n temperature collecting points, wherein temperature of each temperature collecting point is within a preset temperature range; at each temperature collecting point, using a reference source continuously for t times to emit an RF signal to collect signalstrength RSSI of the receiver and real-time transmit gain control value of the transmitter, wherein transmit power of the transmitter is stable and RF power output to the receiver by the reference source is stable; establishing a correspondence model of the signal strength RSSI and the real-time transmit gain control value according to the signal strength RSSI and the real-time transmit gain control value collected by t times at each temperature collecting point; determining a temperature deviation compensation value according to the correspondence model; and determining the distance betweenthe transmitter and the receiver according to the temperature deviation compensation value. The method has the beneficial effects of using no extra temperature sensor and being low in cost.

Description

Technical field [0001] The invention relates to the field of data communication, in particular to a method and device for measuring the distance between a transmitter and a receiver. Background technique [0002] The Received Signal Strength Indication (RSSI) is an indication of the average signal strength of the receiver input obtained by the receiver measurement circuit in the radio frequency communication system. The strength indicator of the received signal is an optional part of the wireless transmission layer to determine the link quality of the transceiver system. The relationship between the transmit power and the received power of the wireless signal can be expressed as: R(dBm)=A-10nlgr, R is the received signal strength indicator, A is the power of the received signal when the signal is transmitted 1m away, and r is the transceiver unit The distance between the two, n is the propagation factor. Obtain the received signal strength indicator value to calculate the dista...

Claims

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Application Information

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IPC IPC(8): G01S11/06
CPCG01S11/06
Inventor 杨辉米杨
Owner BEIJING XINWANG RUIJIE NETWORK TECH CO LTD
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