Detection method and device for personnel positioning in smoke scene

Abstract

The invention discloses a detection method and device for personnel positioning in a smoke scene. The device comprises a microprocessor, a smoke sensor, a millimeter wave radar, an NB-IoT module and a power supply module. The method comprises the following steps: the millimeter wave radar mixes an echo signal and a transmitting signal to obtain a beat intermediate frequency signal; the ADC samples the beat intermediate frequency signal to obtain an echo sampling sequence; a distance azimuth map and a detection point cloud set are obtained through distance processing, static clutter filtering, CAPN beam forming, CFAR target detection and speed estimation which are carried out in sequence; and group tracking is performed on the point cloud set to obtain the position and the motion track of the target, micro-motion identification is carried out on the target, and a detection result is output. The millimeter-wave radar and the smoke sensor are integrated, so that the universality of the millimeter-wave radar is improved; and meanwhile, trapped persons can be quickly positioned in a smog scene by utilizing the characteristics of high precision and interference resistance of the millimeter-wave radar, so that the rescue time is saved.

Description

technical field [0001] The invention belongs to the technical field of radar, and in particular relates to a detection method and device for personnel positioning in a smoke scene. Background technique [0002] The smoke scene is very complex, with dense smoke and high temperature, most sensors will fail in this scene. Smoke alarm is a fire detection alarm that perceives smoke. When a fire occurs, the probe of the smoke alarm can detect a large amount of smoke generated during the fire, thereby sending out an alarm signal. However, traditional smoke sensors can only detect smoke, but cannot identify and locate people trapped in the smoke. How to quickly locate and track trapped people in the smoke scene after a fire has become the focus of attention. [0003] Traditional positioning techniques include: [0004] 1. Laser radar technology [0005] The laser radar emits a laser beam, and obtains the position and speed of the target by comparing the reflected signal with the ...

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