Human presence detection method and device based on infrared trigger image comparison
A technology of infrared triggering and human body, applied in the field of smart sensors, can solve the problems of strong directionality, inability to detect the existence of human body, and inability to detect, and achieve the effect of high efficiency and cost
Active Publication Date: 2017-12-01
北京维森科技有限公司
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But when the human body is present but still, it is also undetectable
[0006] Ultrasonic sensing can detect still human bodies by emitting ultrasonic waves and detecting ultrasonic echoes, but the disadvantage is that it has strong directionality and can only detect human bodies in a specified direction. Human bodies within a certain distance cannot detect the presence of human bodies in the area.
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[0054] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0055] The relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
[0056] At the same time, it should be understood that, for the convenience of d...
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The invention discloses a human body presence detection method and device based on infrared trigger image comparison. The method includes: judging whether the infrared energy within the monitoring range has a sudden change; if the infrared energy within the monitoring range has a sudden change, it is determined that the human body has entered, and the human body entering signal is output, and the current single frame image is collected as the original image P1; at a predetermined time interval After T1, collect the current single-frame image as the comparison image P2; compare the comparison image P2 with the original image P1 to determine the difference value D of the image; judge whether the difference value D exceeds the first predetermined threshold DT; if the difference value D If it exceeds the first predetermined threshold DT, it is determined that a human body exists, and a human body existence signal is output. The present invention can detect the presence of moving and still human bodies within the designated area by combining infrared triggering and image comparison, and can accurately and efficiently detect the existence of the human body within the designated area.
Description
technical field [0001] The invention relates to the field of intelligent sensors, in particular to a human body presence detection method and device based on infrared trigger image comparison. Background technique [0002] Human presence sensing technology can be used in security monitoring, lighting control, elevator control and other fields. Existing methods for detecting human presence include: sound pressure sensing, infrared sensing, and ultrasonic sensing. [0003] Different detection methods have their own disadvantages, listed as follows: [0004] Sound pressure sensing is triggered by the intensity of the ambient sound. The sound that triggers the sensing is not necessarily from the human body. Environmental noise can easily cause false alarms, and it cannot be detected when a person is still within the monitoring range but does not make a sound. [0005] Infrared sensing detects changes in the energy distribution of the infrared band in the environment. When the ...
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IPC IPC(8): G01V8/10
Inventor 黄盛科陈路佳
Owner 北京维森科技有限公司