Unlock instant, AI-driven research and patent intelligence for your innovation.

Wireless Positioning System of Nuclear Power Plant Based on Kalman Filter and Dead Reckoning

A technology of Kalman filter and wireless positioning system, applied in the field of wireless positioning system of nuclear power plant, can solve problems such as inability to work alone for a long time, error accumulation of inertial navigation system over time, position drift, etc.

Active Publication Date: 2017-05-03
王萍 +3
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, high-precision inertial measurement units cannot be widely used due to reasons such as cost, volume, and power consumption.
In general, using low-cost inertial navigation systems such as MEMS sensors, the error accumulates over time, and when calculating the double integral, it will bring a large position drift and cannot work alone for a long time

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Wireless Positioning System of Nuclear Power Plant Based on Kalman Filter and Dead Reckoning
  • Wireless Positioning System of Nuclear Power Plant Based on Kalman Filter and Dead Reckoning
  • Wireless Positioning System of Nuclear Power Plant Based on Kalman Filter and Dead Reckoning

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0033] The specific implementation of the present invention includes not only various real-time calculation processes during positioning, but also the process of site survey and construction of RBF network from survey data (usually called training process or learning process). For consistency, but without loss of completeness, we number this process as step 0. The specific implementation steps are as follows.

[0034] Step 0: Site survey, using survey data to construct RBF network.

[0035] Select several survey points to collect data in the positioning area according to the indoor topology and layout. Each survey point needs to collect data in the four directions of southeast, northwest and north. The collected data includes: survey point coordinates (x, y), wireless signal strength data ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a wireless positioning system of a nuclear power station based on a Kalman filter and dead reckoning. The system is basically composed of a special mobile terminal, a smart phone, a positioning server and a positioning graphic user interface client, wherein the special mobile terminal is internally provided with a WIFI module, an MEMS sensor and an industrial special sensor, and the MEMS sensor of the special mobile terminal mainly comprises an accelerometer, a gyroscope and a magnetometer. The wireless network environment on which the system relies is necessary. The MEMS sensor in the special mobile terminal provides sensor data, the moving direction and distance of a wearer of the mobile terminal are calculated by Kalman filtering, and a calculation result, wireless signal intensity indication and terrestrial magnetism data are used to calculate the position and locus of the wearer of the mobile terminal by Kalman filtering again. The system can raise different alarm for the special working environment of the nuclear power station, including stay overtime, stationary overtime, and fall off.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, in particular to a nuclear power plant wireless positioning system based on a Kalman filter and a dead reckoning method. Background technique [0002] The application of indoor positioning technology based on WIFI (IEEE 802.11 series standards) in nuclear power plants is still in its initial stage in China. Due to the special requirements of nuclear power plants on the electromagnetic environment and the particularity of building topology, etc., the wireless network environment of nuclear power plants is greatly different from the common civilian environment. [0003] WIFI-based indoor positioning technology relies heavily on the establishment of its fingerprint database when using the fingerprint comparison method for positioning. At present, the establishment of fingerprint database mainly includes two types based on signal propagation model and field survey, among which: [00...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01S5/04G01C21/16G01C21/08
CPCG01C21/08G01C21/16G01S5/04
Inventor 卫民孙燕军
Owner 王萍