Anchor-node-free positioning method, system and device for distance measuring

A technology of positioning equipment and no anchor nodes, which is applied to radio wave measurement systems, positioning, measurement devices, etc., can solve problems such as inability to achieve positioning and sparse node deployment, achieve flexible ranging solutions, and is conducive to miniaturization and reduction. volume effect

Inactive Publication Date: 2014-12-03
INST OF ELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology

However, in many practical application scenarios, the deployment of nodes is sparse, or there are no nodes with known locations, so positioning cannot be achieved

Method used

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  • Anchor-node-free positioning method, system and device for distance measuring
  • Anchor-node-free positioning method, system and device for distance measuring
  • Anchor-node-free positioning method, system and device for distance measuring

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Embodiment Construction

[0038] The present invention provides an anchor-free positioning scheme, the positioning includes two aspects of distance measurement and direction measurement, the distance measurement is the distance test between the positioning equipment and the positioning target, and the direction measurement is to determine the direction of the target object relative to the positioning equipment . The basic idea of ​​this solution is: design a signal shielding structure on the positioning device, the signal shielding structure can constrain the direction of the incident signal, so that only one direction has the maximum intensity of the incident signal. Let the positioning target send a radio frequency signal for direction finding, and through the positioning equipment moving in space to detect, the direction of the positioning target can be determined by judging whether the intensity of the received radio frequency signal is the maximum, thereby obtaining the direction component of the p...

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Abstract

The invention discloses an anchor-node-free positioning method, system and device for distance measuring. On the situation that anchor nodes do not exist, target objects can be quickly and accurately positioned. According to the method, the positioning device is provided with a signal shielding structure which can limit the direction of incoming signals, and accordingly only the incoming signals in one direction are maximum in intensity; when distance information is obtained, the distance information is obtained through the positioning device and an auxiliary positioning device by the adoption of a wireless distance measuring scheme; when direction information is obtained, a positioning target sends a radio frequency signal; the positioning device moves in space, captures the radio frequency signal and obtains intensity of the radio frequency signal in real time, and when the intensity of the radio frequency signal is maximum, the direction, limited by the signal shielding structure in the positioning device, of the incoming signals is the direction of the positioning target.

Description

technical field [0001] The invention relates to the fields of electronic communication technology and wireless ad hoc network technology, in particular to an anchor-less positioning method, system and equipment with ranging and direction measuring functions. Background technique [0002] Location information is crucial for monitoring activities such as child monitoring, mine personnel locating, elderly care, livestock management and other application areas. The location information includes distance and direction. [0003] The current target object positioning methods generally require the cooperation of nodes (anchor nodes) with known positions and network systems, and are classified according to whether they are based on distance measurement, including distance-based positioning schemes and distance-independent positioning schemes. [0004] The distance-based positioning scheme is to locate by measuring the actual distance or azimuth between adjacent nodes. The specific ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W64/00G01S5/02
Inventor 方震赵湛杜利东陈帝良徐志红王东辉
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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