A 125k-based analog reference tag positioning system and its method

A reference tag and positioning method technology, applied in the field of 125k-based analog reference tag positioning system, can solve the problems of limited accuracy of positioning technology, low signal discrimination, and reduced accuracy of positioning points, and achieve convenient calculation, high positioning accuracy, and positioning The result is a stable effect

Active Publication Date: 2022-03-08
南京荣飞科技股份有限公司
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Problems solved by technology

However, the accuracy of this positioning technology is limited and depends on the deployment density of 125k antennas. With the improvement of indoor positioning accuracy requirements in various industries, another batch of high-precision positioning technologies based on 125k have been proposed. Most of them are based on the traditional three-point positioning. method to locate, use the RSSI value to calculate the corresponding distance, and estimate the final positioning coordinates by intersecting three circles or calculating the centroid
[0004] However, since the signal attenuation of 125k is nonlinear, the farther the distance is, the lower the discrimination of the signal is, and the accuracy of the positioning point obtained by using the three-circle method will be greatly reduced.

Method used

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  • A 125k-based analog reference tag positioning system and its method
  • A 125k-based analog reference tag positioning system and its method
  • A 125k-based analog reference tag positioning system and its method

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] RSSI: Received Signal Strength Indication received signal strength.

[0026] Positioning base station: a fixed-position base station for indoor positioning, with known coordinates, also called an anchor node.

[0027] Mobile point: the device to be positioned for indoor positioning, which can communicate with the positioning base station.

[0028] RFID: Radio Frequency Identification, radio frequency identification.

[0029] The principle is to conduct non-contact data communication between the reader and the tag to achieve the purpose of identifying the target. The application of RFID is very extensive. At present, typical applications include animal chips, car chip anti-theft devices, access control, parking lot control, production line automation, and material management.

[0030] 125K: A 125K RFID technology that works in the 12...

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Abstract

The invention discloses a 125k-based analog reference label positioning system and a method thereof, comprising a 125k positioning base station, a server terminal and a network switch, and the 125k positioning base station is connected to the server terminal through the network switch. The steps include an offline training phase and an online calculation phase, the offline training phase includes training the RSSI-distance model and generating simulated reference labels. The positioning position of the present invention has little fluctuation, does not increase cost, and has high precision.

Description

technical field [0001] The invention relates to indoor positioning technology, in particular to a 125k-based analog reference tag positioning system and a method thereof. Background technique [0002] 125k positioning is widely used for indoor personnel positioning due to its strong anti-interference performance, good wall penetration performance, and stable signal. [0003] There are many 125k-based positioning methods, the most typical of which is to use the RSSI value to locate the 125k antenna with the strongest signal that meets the conditions. However, the accuracy of this positioning technology is limited and depends on the deployment density of 125k antennas. With the improvement of indoor positioning accuracy requirements in various industries, another batch of high-precision positioning technologies based on 125k have been proposed. Most of them are based on the traditional three-point positioning. Use the RSSI value to calculate the corresponding distance, and es...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W64/00H04B17/318G01S5/06G01S5/02G01S5/00
CPCH04W64/006H04B17/318G01S5/0257G01S5/06G01S5/0081
Inventor 邵力斌
Owner 南京荣飞科技股份有限公司
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