MIMU-based pedestrian falling-down detecting method and device
A detection method and detection device technology, which are applied in the directions of diagnostic recording/measurement, medical science, diagnostic signal processing, etc., can solve problems such as inaccurate fall judgment, and achieve the effect of solving inaccurate fall judgment.
Active Publication Date: 2018-12-28
PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU
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[0006] The purpose of the present invention is to provide a MIMU-based pedestrian fall detection method and device for solving the problem of inaccurate fall judgment in existing detection methods
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[0048] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0049] Method example:
[0050] The installation position of MIMU on the right foot shoe of the present invention method is as follows: figure 1 As shown, the pedestrian fall detection footwear includes a vamp 1, a heel 3 and a sole, and a micro inertial measurement unit 2 is installed on the heel (the micro inertial measurement unit 2 is hereinafter replaced by MIMU). Fix the MIMU firmly in the heel of the right shoe, and the x-axis is parallel to the sole and points to the head of the shoe, the z-axis is perpendicular to the sole and points upward, and the y-axis points to the right-hand rule. figure 1 , the angle of rotation around the x-axis is the roll angle, denoted by θ, and the angle of rotation around the y-axis is the corrected pitch ang...
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The invention relates to a MIMU-based pedestrian falling-down detecting method and device. The method comprises the following steps: calculating a correction pitching angle and a roll angle under a coordinate system by collecting the accelerated speeds of coordinate axes in three directions in the coordinate system; calculating the accelerated speed, the correction pitching angle and the roll angle in each coordinate axis direction, judging whether a pedestrian falls down or not in combination with an experience threshold value, and if the pedestrian falls down, judging a falling-down direction in combination with the accelerated speed of an x axis of the three-dimensional coordinate system, the angular speed around a y axis, the correction pitching angle or the roll angle; or judging thefalling-down direction in combination with the accelerated speed of the y axis, the angular speed around the x axis, the correction pitching angle or the roll angle. The angular speed is a measurementvalue of a gyroscope around the axis. The problem that an existing detecting mode judges falling-down inaccurately is solved.
Description
technical field [0001] The invention belongs to the technical field of pedestrian fall detection, and in particular relates to an MIMU-based pedestrian fall detection method and device. Background technique [0002] Micro Inertial Measurement Unit (MIMU) is a micro-electromechanical system, including micro-gyroscopes, micro-accelerometers, application-specific integrated circuits (ASICs), embedded microcomputers and corresponding navigation software; Function. [0003] Nowadays, accidental falls pose a serious threat to human health and even life, especially for soldiers, firefighters and counter-terrorism personnel who are performing tasks. If the fall can be detected in time and the direction of the fall can be correctly judged, then It is possible to make a preliminary judgment on the injury, to treat it quickly, and to save its life to the greatest extent. [0004] At present, there are mainly three automatic detection methods for people's falls. One is to use surveill...
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Login to View More IPC IPC(8): A61B5/11
CPCA61B5/1117A61B5/1126A61B5/6807A61B5/72
Inventor 张伦东贾铮洋吕志伟李军正王安成李万里潘林何劢航
Owner PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU