Human body intelligent recognition method and system based on infrared signal

Abstract

The invention discloses a human body intelligent recognition method and a system based on a distributed layout pyroelectric infrared detector. The recognition system consists of layout distributed detectors in a monitoring site and a detector host which transfer information through a wireless communication. The method is to use the detectors to perform a real-time signal process to a detected region; to extract an event window, perform extractions of a time domain feature and a frequency domain feature from signals in the event window, transmit the extracted features to the detector host through the wireless communication, uses the detector host to perform a fusion of a feature-level fusion for information of each detector, and determines whether or not an identifying object is a human body through an algorithm of principal component regression. The human body intelligent recognition method is combined with an information fusion technology of distributed layout detectors and a pattern recognition technology, and can effectively reduce effects of external environment and other creatures on a monitoring system and reduce the probability of misrecognition for a passive pyroelectric infrared detector.

Description

technical field [0001] The invention belongs to the technical fields of biosensing, signal processing and pattern recognition, and in particular relates to an infrared signal-based intelligent recognition method for a human body, through which the recognition of human and non-human infrared heat sources can be realized. As a result, the application of detection and recognition based on human infrared signals in the fields of security or smart home has been greatly improved in technology, and the method and technology can ensure the maximum reduction of the false recognition rate of passive pyroelectric infrared detectors. Background technique [0002] With the development and progress of society, whether it is ordinary families, banks, airports or troops, people begin to pay more and more attention to security issues, and human invasion is the main reason for these security issues. Human body biodetectors are currently in great market demand in the field of human intrusion d...

AI Technical Summary

Problems solved by technology

However, there are many deficiencies in the current passive pyroelectric infrared detector, which leads to its application field limited to low security performance requirements, or as a front-end sensing device for other high-end monitoring products

The main reasons are as follows: First, because the intrusion object cannot be identified as a human body or other objects, serious false alarms are caused

Second, the intrusion objects cannot be accurately detected due to the different fabrics of the human body, resulting in a high false alarm rate.

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