Method and device for measuring and recording the number of people in a room based on multi-source information fusion

Abstract

The invention discloses a method and device for measuring and recording the number of people in a room based on multi-source information fusion. The implementation steps of the method are as follows: 1) Set the initial number of people in the room X, and record the initial time T0; 2) When any active infrared detection When the sensor is triggered, record the trigger time T1; 3) Extract the image frame at T1‑1 second from the camera, and use the person detection method based on image template matching to determine whether there is a person in the image frame; 4) Based on the active infrared detector and image personnel detection results, determine the number of people entering and leaving the room, and record the corresponding time; 5) According to the initial number of people in the room X and the number of people entering and leaving the room, get the number of people in the room and the corresponding time, and record them in the host computer; 6) The device includes two Active infrared detector, two visible light cameras and image acquisition device, image processing unit, wireless communication transmission unit, upper computer. The invention has the advantages of low cost, simple structure, small amount of calculation, accurate measurement of the number of people, low power consumption, strong real-time performance and wide application range.

Description

technical field [0001] The invention belongs to the field of multi-source information fusion, and in particular relates to a method and device for measuring and recording the number of people in a room based on the fusion of active infrared detectors and visible light images. Background technique [0002] On the one hand, the occupants emit sensible heat and latent heat to the room, forming indoor cooling load and humidity load, which is an important part of building energy consumption. On the other hand, the occupants themselves emit pollutants (such as water vapor, carbon dioxide, odor , germs, etc.), have an important impact on indoor air quality. The number of people in a room and its changes have an important impact on building energy consumption and indoor thermal environment. It is the basic data in the fields of building energy conservation, computer-aided building energy consumption simulation, and indoor environment regulation. [0003] With the growth of populati...

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Problems solved by technology

[0005] At present, the literature provides some methods for measuring and recording the number of people in the room, such as the invention patent CN103477355A of the number measuring device, the invention patent CN103955673A of a human body recognition method based on the head and shoulder model, etc., but these methods are used for long-term real-time indoor people measurement. There are disadvantages such as large amount of calculation, complex processing process, slow recognition speed, poor calculation reliability, etc., and it is difficult to meet the long-term real-time indoor population measurement requirements

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