Falling-down detection device and method

A detection device and detection method technology, applied in the direction of measuring devices, surveying and navigation, instruments, etc., can solve the problems of insufficient detection quality, increased complexity, power consumption, false alarms, etc., achieve accurate attitude angles, and reduce false alarm rates Effect

Active Publication Date: 2013-09-18
北京福瑞思达信息科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using multiple sensor integration or model training methods can improve the detection quality, but it inevitably increases the complexity and power consumption, affecting real-time performance and c

Method used

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  • Falling-down detection device and method

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Experimental program
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Embodiment

[0044] figure 1 It is a schematic diagram of the fall detection device of the present invention. Such as figure 1 As shown, the fall detection device of the present invention includes a sensor module 1, a microprocessor module 2, a wireless communication module 3, and a power supply module 4 to detect a user's fall and report to the wireless monitoring terminal 5. The specific conditions of each module are as follows:

[0045] Sensor module 1, used to detect user movement, including gyroscope, accelerometer, and magnetometer, to obtain angular velocity data ω respectively m , acceleration data g m , geomagnetic data m m .

[0046] The microprocessor module 2 includes a microprocessor, an alarm indicating device, and an alarm canceling device, and the microprocessor is used to obtain the angular velocity data ω obtained by the sensor module 1. m , acceleration data g m , geomagnetic data m m Perform dynamic smoothing filtering and calculate the attitude angle to judge wh...

specific Embodiment approach

[0050] figure 2 It is a structural diagram of a specific embodiment of the fall detection device of the present invention. Such as figure 2 As shown, a specific embodiment of the fall detection device of the present invention is:

[0051] The sensor module 1 adopts MEMS (Micro-Electro-Mechanical Systems, micro-electro-mechanical systems) sensor in this embodiment, has the characteristics of small size, low weight and power consumption, easy installation, impact resistance, etc., and the accuracy can also meet the requirements of human motion detection. need. The typical solution adopted by sensor module 1 includes: L3G4200D chip 11 and LSM303DLH chip 12, wherein L3G4200D chip 11 includes an ultra-stable three-axis digital output gyroscope 111, and LSM303DLH chip 12 integrates two types of three-axis accelerometer 121 and three-axis geomagnetometer 122 sensor.

[0052] The present invention mainly uses the ultra-stable three-axis digital output gyroscope 111 in the L3G420...

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Abstract

The invention discloses a falling-down detection device and method. A gyroscope, an accelerometer and a magnetometer are respectively used for measuring to obtain angular speed data, accelerated speed data and terrestrial magnetism data; the angular speed data are utilized to solve a basic posture angle, and the accelerated speed data and the terrestrial magnetism data are utilized to carry out noise self-adapted Kalman fusion filtering on the basic posture angle to obtain a final posture angle. The angular speed data and the accelerated speed data are used tor carrying out movable and static state judgment on a user; when the user is static, whether the user lies down or not is judged according to the posture angle; if the user lies down, conscious/unconscious screening and falling-down stress assessment of lying-down movement is carried out to judge whether the user falls down or not in a combined manner; when the user falls down, an alarm is sent out. According to the falling-down detection device and method disclosed by the invention, the obtained posture angle is more accurate than that obtained by using a common method; meanwhile, the conscious/unconscious screening and the falling-down stress assessment are used for carrying out combined judgment so that a falling-down judging result is accurate and the false alarm rate is reduced.

Description

technical field [0001] The invention belongs to the technical field of fall detection, and more specifically relates to a fall detection device and method. Background technique [0002] Elderly living alone in empty nests has become a common and widely concerned social phenomenon. Due to the gradual deterioration of body functions with age and the impact of some chronic diseases, the home safety of the elderly is extremely vulnerable to the threat of sudden falls. Research on practical real-time fall detection devices has important application prospects and market value. Fall detection can rely on the optical sensor deployed in the regional environment to obtain the original image sequence, and identify changes in the state of human motion through visual methods; it can also rely on inertial devices such as accelerometers and gyroscopes deployed on the body to obtain information generated by human motion. Dynamic sensing data, fall detection through data processing and pat...

Claims

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Application Information

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IPC IPC(8): G01C23/00G08B21/02G08C17/02
Inventor 夏侯士戟陈东义
Owner 北京福瑞思达信息科技有限公司
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