A Fall Detection System Based on Pyroelectric Infrared

Abstract

The invention discloses a detection system based on pyroelectric infrared. The system: includes a data acquisition module, an analog-to-digital conversion module, a filtering and noise removal module, a data processing module, and an alarm module; the data acquisition module includes two pyroelectric infrared sensors for collecting signals; the analog-to-digital conversion module, It is used to convert the analog signal collected by pyroelectric infrared into digital signal; the filter and noise removal module is used to remove the influence of various interferences and reduce the negative impact of noise; the data processing module is used for detection and analysis , use Hidden Markov Model (HMM) pattern matching for fall detection, get the detection result, and issue an alarm. The technical solution of the present invention does not require users to use wearable devices, does not involve user privacy, can work in a dark environment, and has high sensitivity, thus bringing great convenience to users.

Description

technical field [0001] The invention relates to the technical field of digital home, in particular to a fall detection system based on pyroelectric infrared. Background technique [0002] As a biometric authentication technology that can be remotely identified, behavior recognition has a wide range of application backgrounds. Falling is one of typical behaviors (walking, sitting, lying, falling, etc.), and it is a behavior that has a relatively large impact on people's production and life. As an aspect of behavior recognition, fall detection is widely used in security monitoring systems in various important places such as homes, hospitals, offices or industrial environments. Fall detection technology is important in certain applications. For example, fall detection is an important part of health assistance technology. For the elderly or hospital patients living alone at home, it can notify caregivers of emergency falls in time to ensure that those who fall will receive eme...

AI Technical Summary

Problems solved by technology

The current fall detection methods have their own shortcomings. The fall detection method based on wearable devices is mandatory, requiring users to carry wearable devices, which brings inconvenience to users; the fall detection method based on visual devices will involve the user privacy, cannot work in a dark environment, and the equipment price is relatively high, and the amount of calculation is large; fall detection methods based on surrounding environment equipment must use pressure or vibration sensors to measure the user's position in order to detect falls

Images