Older people fall help system and method based on acceleration sensor

Abstract

The invention discloses an old people fall help system and method based on an acceleration sensor. The fall help system collects triaxial acceleration and triaxial angular velocity data of the movement of an old people through an acceleration sensor module (1). A DMP module in the acceleration sensor module (1) filters and fuses the original data, and outputs posture data after posture calculating to an STM32 microcontroller module (2) through an I2C interface. The STM32 microcontroller module (2) receives the posture data, and identifies a fall event. After fall is confirmed, the STM32 microcontroller module (2) uses a GPS space positioning module (5) to provide location and speed information as initial parameters and the output direction and speed information of the acceleration sensor for dead reckoning to acquire the spatial geographical location information of the old people who falls. The problem that positioning is unavailable in a GPS blind area is solved. A GSM wireless communication module (6) sends the geographical location information of the old people who falls to the mobile phones of the relatives of the old people to issue help information.

Description

technical field [0001] The invention relates to an acceleration sensor-based fall rescue system and method for the elderly, belonging to the technical field of wearable devices. Background technique [0002] Since the 1990s, China's aging process has accelerated, and the health monitoring of the elderly has become an important issue in society. In view of the problem that the elderly are prone to falls, in addition to taking preventive measures as much as possible, when the elderly fall occurs, the most important thing is to notify the family and the hospital as soon as possible, so that the elderly can receive timely assistance to reduce injuries . [0003] In recent years, with the rapid development of electronic information technology, electronic information technology has been widely used in the field of health monitoring for the elderly. The fall rescue system uses acceleration sensors to collect raw motion data of the elderly, and the microcontroller processes and an...

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Problems solved by technology

After the elderly fall in the positioning blind area, the fall rescue system cannot send out the precise geographical location information of the elderly fall, which brings great difficulties to the search and rescue of relatives and hospitals

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