Indoor positioning method and system applied to nuclear power stations

A positioning method and technology for nuclear power plants, which are applied indoors in the field of nuclear power plant positioning methods and systems, can solve problems such as difficult implementation, insufficient program pertinence, and no specific description of dynamic positioning effects.

Inactive Publication Date: 2019-05-03
CHINA NUCLEAR POWER TECH RES INST CO LTD +2
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Problems solved by technology

This solution does not specifically describe whether the dynamic positioning effect can be satisfied, nor does it introduce the impact of the screen cabinet block on signal transmission and the solution
In addition, the use of the TOA algorithm does not mention the number of positioning nodes and the location of the factors that need to be located, whi

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  • Indoor positioning method and system applied to nuclear power stations
  • Indoor positioning method and system applied to nuclear power stations
  • Indoor positioning method and system applied to nuclear power stations

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Example Embodiment

[0074] The core content of this patent is to obtain the coordinates of the positioning base station and the distance difference between the first distance of the positioning tag and the i-th base station and the second distance of the positioning tag. The coordinates of the positioning tag are calculated through the CHAN algorithm and the Kalman filter algorithm. The example further illustrates the specific implementation of the indoor positioning method and system for nuclear power plants.

[0075] The following will describe in detail the embodiments of the indoor positioning method and system for nuclear power plants provided by the present invention.

[0076] Such as figure 1 As shown, the embodiment of the present invention provides an indoor application scenario of a nuclear power plant positioning method and system, which are described in four situations:

[0077] The first case is that the positioning base stations are set in different rooms. For example, there are positionin...

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Abstract

The invention provides an indoor positioning method and system applied to nuclear power stations. The method includes, obtaining the coordinates of multiple positioning base stations, and measuring the distance difference between a first distance from a positioning label to ith base stations in the multiple positioning base stations and a second distance from the positioning label to the first base station in the multiple positioning base stations; and calculating the coordinate of the positioning label by adopting a corresponding operation mode according to the number of the positioning basestations. The superposition of dual estimation location algorithms can be performed on a target by combining a CHAN's algorithm and Kalman filter; and the problem in the prior art of insufficient positioning precision caused by wireless signals affected by massive shielded screen cabinets existing in a nuclear power station, namely non-line-of-sight positioning factors, can be solved by establishing a ray tracing model which can accurately describe the propagation characteristics of a radio signal under an indoor environment.

Description

technical field [0001] The invention relates to the field of positioning technology, in particular to an indoor positioning method and system for nuclear power plants. Background technique [0002] Existing nuclear power plant positioning technology currently generally performs existential positioning, which cannot monitor and manage the action trajectory and status of on-site moving targets in real time, and the positioning accuracy error of ordinary positioning products is also relatively large (reaching the meter level). The main consideration is that the nuclear power system is based on the principle of safe and conservative design, and the electromagnetic interference between wireless equipment and various precision equipment on site will cause irreversible effects and it is difficult to diagnose the source of the accident. In addition, the environment of the plant is special, and the environment of some plants is relatively harsh. There will be certain difficulties in ...

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Application Information

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IPC IPC(8): G01S5/06
Inventor 向健刘业胜李静陈楫焱朱文江陆秀生
Owner CHINA NUCLEAR POWER TECH RES INST CO LTD
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