基于數(shù)據(jù)融合的井下人員定位方法研究與實(shí)現(xiàn)
[Abstract]:The development of society depends on the support of energy. Coal mine is one of the three major energy sources in China. With the development of industry, the demand for coal mine is increasing day by day, which poses a greater challenge to the development of coal mine industry. However, in recent years, accidents such as gas leakage, water permeability, collapse and coal dust explosion occurred frequently in coal mines, which brought huge disasters and losses to coal mine production. The safety of coal mining has become the focus of attention in the coal industry and the whole society. Coal mine personnel positioning system to a certain extent to ensure the safety of mining personnel, it plays an important role in disaster early warning, escape guidance, personnel search and rescue. Positioning accuracy and stability are two main performance indexes of underground personnel positioning system. At present, the personnel positioning system has the shortcomings of poor precision and poor stability. In order to improve the accuracy of the positioning system, it is necessary to select expensive and high-precision sensors, which will increase the cost of the positioning system, which is not conducive to its popularization and popularization. With the development of information fusion technology, many location algorithms will be fused to complement each other, which will provide a new solution to improve the accuracy of personnel positioning system. In this paper, the JN5148 module is selected to design and complete the Zigbee module with TOF and RSSI ranging, and the experimental platform of underground personnel positioning system is built by using this module. The platform is divided into underground part and downhole part. The downhole part is bus communication and the downhole part is Zigbee wireless communication. This paper mainly studies the location algorithm between the sub-station, card reader and indicator card in the underground part. First of all, on the Eclipse software development platform, the paper realizes the Zigbee networking; Through real-time collection of RSSI and TOF ranging data between nodes, different interference factors in different environments are analyzed and processed. The mean filtering, Kalman filtering and weighted average filtering of ranging are studied and implemented on the Matlab simulation platform. Based on the realization of stable ranging, the trilateral location and Bounding-Box localization algorithm are further studied, and the weighted average ranging fusion algorithm and the two-dimensional location fusion algorithm based on Bounding-Box and Kalman filtering are proposed. The algorithm is verified on the simulation platform and the experimental platform. And in the actual coal mine environment, the ranging and positioning algorithm is debugged on the spot. In this paper, the information fusion algorithm is tested on the hardware test platform of underground personnel positioning system. The results show that the proposed algorithm can improve the positioning accuracy and the stability of the personnel positioning system, and achieve the expected research goal.
【學(xué)位授予單位】:重慶大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2015
【分類號】:TD655;TP202
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