Human body intelligent recognition method and system based on infrared signal

A technology of intelligent identification and infrared signal, which is applied in the field of human body intelligent identification based on infrared signal, can solve the problems of high false alarm rate, inability to identify whether the intruding object is a human body or other objects, false alarms, etc.

Inactive Publication Date: 2008-08-06
CHONGQING UNIV +1
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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 f

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  • Human body intelligent recognition method and system based on infrared signal
  • Human body intelligent recognition method and system based on infrared signal
  • Human body intelligent recognition method and system based on infrared signal

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specific Embodiment approach

[0051] Fig. 1 represents the block diagram of the human body intelligent recognition system realizing the method of the present invention. This system can realize real-time detection of infrared radiation objects in the detection area and output recognition results.

[0052] As shown in Figure 1, the human body intelligent recognition system consists of detectors 1 and detector hosts 2 located in a distributed layout at the monitoring site. The distributed detectors 1 and the detector host 2 transmit information through wireless communication. Detector 1 with distributed layout is arranged by N detectors according to the optimal layout mode, and the pyroelectric infrared sensor senses the infrared heat source in the detection area in real time, and outputs a voltage signal, and the voltage signal passes through the infrared signal detection amplifier circuit It is input to PIC16877 in each distributed detector, and PIC16877 completes the preprocessing of the infrared signal, ...

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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...

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Application Information

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IPC IPC(8): G06K9/00G06K9/62
Inventor 龚卫国王林泓李伟红杨利平梁光清李正浩辜小花
Owner CHONGQING UNIV
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