Indoor and outdoor discrimination and integrated multi-source fusion personnel positioning method for gas-fired power stations
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NETL
NSTL
万方数据
针对燃气电站金属结构多、设备密集及安全管理要求高等特点,结合燃气电站安全管理对人员定位精度高和稳定可靠等要求,提出了一种面向燃气电站的室内外判别以及一体化多源融合定位方法.室内外判别方法综合卫星高度角以及信号信噪比设计了一种判别指标,基于该指标设定合理阈值,可实现人员室内外判别.考虑到室外装置区附近容易受金属干扰和遮挡影响卫星定位的问题,提出了一种多源融合定位方法,将卫星定位与微惯性系统、地磁定位及蓝牙无线信号进行融合,实现了在复杂工业场景下的稳定可靠定位.该方法计算量小、定位连续且定位精度高.最后采用智能手机在实际场景进行了验证,结果表明,室内外切换准确,切换时间小于3 s,室内定位误差1.35 m,室外定位误差3.6 m.
In view of the characteristics of gas-fired power stations with many metal structures in buildings and dense equipment placement,and to meet the gas-fired power station safety manage-ment requirements of high accuracy,stability and reliability of personnel positioning,an indoor and outdoor discrimination and integrated multi-source fusion positioning method for gas-fired power station is proposed.Based on the satellite elevation angle and signal-to-noise ratio(SNR),a discriminant index is designed.With this index,a reasonable threshold is set to determine whether a person is indoors or outdoors.Considering the problem that the satellite positioning is easily af-fected by metal interference and occlusion in the outdoor area around the device area,a multi-source fusion positioning method is proposed,which integrates the satellite positioning with micro-inertial system,geomagnetic positioning and bluetooth wireless signals to achieve stable and relia-ble positioning in complex industrial scenes.The proposed method has the advantages of low com-putation,continuous positioning and high positioning accuracy.Finally,smart phones are used for the verification in the actual scenario,the results show that the indoor and outdoor switching is ac-curate,with a switching time of less than 3 s,an indoor positioning error of 1.35 m,and an out-door positioning error of 3.6 m.
Gas-fired power stationIndoor and outdoor discriminationSatellite elevation angleMulti-source fusionIntegrated positioning
NETL
NSTL
万方数据
