Fall intelligent alarm system and method based on Android platform mems/magnetic sensor/gps

Abstract

The invention discloses an intelligent fall alarm system and method based on Android platform MEMS / magnetic sensor / GPS. The system includes: a three-axis acceleration sensor used to collect the three-axis acceleration data of a mobile phone; a magnetic sensor used to collect the location of the mobile phone The geomagnetic field strength data of the location; the gyroscope, used to collect the triaxial angular rate data of the mobile phone; Obtain the attitude of the mobile phone and the real-time attitude rotation matrix; the first fall judgment module is used to preliminarily judge whether it has fallen; the second fall judgment module is used to determine whether it is a final fall; the alarm module is used to send the carrying position and physical condition of the patient. On the basis of the traditional attitude calculation algorithm, the present invention proposes a new self-adaptive parameter adjustment attitude calculation algorithm for the special occasion of fall detection, and realizes the accurate detection of falls.

Description

technical field [0001] The invention relates to the technical field of sensor detection, in particular to an intelligent fall alarm system and method based on Android platform MEMS / magnetic sensor / GPS. Background technique [0002] From the research results at home and abroad now, there are various methods for calling the police when the elderly fall, and mature products of some companies have appeared on the market. According to the different forms and sources of fall information obtained during the development and use of each product, the core methods can be divided into the following three categories: [0003] 1. The fall alarm device independently activated by the elderly: the elderly carry a fall alarm device independent of the mobile phone. When the old man falls down, he presses the button independently to call the police, and in the background, the professionals realize the forwarding and management of the alarm signal, such as immediately notifying the relatives, f...

AI Technical Summary

Problems solved by technology

[0006] There are certain deficiencies in the above various methods, among which method 1 must carry an independent alarm device and requires the elderly to press the alarm button independently to realize automatic alarm; method 2 requires related video detection equipment. Time and space are limited; method 3 only uses the accelerometer as a sensor, the acquired data is very limited, and the false alarm rate is high

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