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Human body detecting method, device and air conditioner

A human body detection and human body technology, applied in heating methods, geophysical measurement, lighting and heating equipment, etc., can solve problems such as interference, poor infrared penetration, insensitive radial movement response, etc., to improve accuracy, intelligent Control convenient effects

Active Publication Date: 2014-09-24
GREE ELECTRIC APPLIANCES INC
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The infrared human body sensor senses the existence of the human body by detecting the infrared rays emitted by the human body, but the infrared rays of the human body have poor penetration and are easily blocked by various objects, thus affecting the sensitivity of the sensor to the human body. The sensitivity of the infrared human body sensor to the human body It also has a great relationship with the direction of human movement. For example, it is the least sensitive to radial movement. At the same time, human body infrared sensors are susceptible to interference from various heat sources, light sources, and radio frequency radiation, which eventually leads to the detection accuracy of infrared human body sensors. Low, which has a negative impact on the intelligent control of the air conditioner

Method used

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  • Human body detecting method, device and air conditioner

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Embodiment 1

[0053] Embodiment 1 of the present invention discloses a human body detection method, please refer to figure 1 , the method includes the following steps:

[0054]S1: Obtain the indoor temperature field data at the current moment, and process the indoor temperature field data at the current moment to obtain the current indoor temperature. The current indoor temperature is the temperature at the current moment of each pixel in the pixel matrix with a preset size collection.

[0055] Since there is an obvious temperature difference between the body temperature of the human body and the indoor background temperature, the method of the present invention uses the temperature changes in each area of ​​the room to detect the human body based on this feature.

[0056] Wherein, this embodiment adopts the thermopile sensor to detect the temperature of each area in the room, and obtains the indoor temperature field data, and the thermopile sensor is an 8X8 matrix sensor, so that the indo...

Embodiment 2

[0078] This embodiment two continues to improve the human body detection method disclosed in embodiment one, please refer to figure 2 , in this embodiment, before step S4 also includes:

[0079] S6: Calculate the center of gravity of each candidate body; for each candidate body, track the candidate body according to the center of gravity of the candidate body, and replace the original candidate body with the candidate body whose tracking result is an active heat source as a new candidate body.

[0080] Wherein, in this embodiment, the geometric center of the smallest circumscribed rectangle of the candidate body is taken as the center of gravity of the candidate body.

[0081] In order to further improve the accuracy and precision of the detection, this embodiment 2 adds a tracking link to the heat source, and uses the center of gravity of the heat source to track and detect the heat source, that is, to compare whether the center of gravity of the same candidate body moves a...

Embodiment 3

[0083] This embodiment three continues to expand the human body detection method disclosed in the above embodiment, please refer to image 3 , in this embodiment, the method also includes:

[0084] S7: Updating the indoor background temperature.

[0085] In real application scenarios, since the presence of human body indoors will change at any time, the presence of human body indoors is often monitored continuously and in real time. In order to ensure the timeliness of the background temperature, the background temperature needs to be updated. This embodiment specifically Every time the presence of a human body is detected, the currently used background temperature is updated. The specific update process is as follows:

[0086] 1) Update the background temperature of human pixels based on the differential temperature of human pixels.

[0087] First, calculate the average value of the differential temperature of all unmanned pixels in the 15x15 pixels to obtain the average di...

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Abstract

The invention discloses a human body detecting method, device and air conditioner. According to the method, based on the character that human body temperature and indoor background temperature have obvious temperature difference, human body detecting is carried out through the temperature changing situation of various zones indoors, namely the method comprises the steps that current indoor temperature field data are obtained, and processed current indoor temperature field data are used as indoor current temperature, wherein indoor current temperature is the set of the current temperatures of pixel points in a pixel matrix corresponding to a temperature place; and then the indoor current temperature and the indoor background temperature corresponding to the indoor current temperature are subjected to differential treatment, the differential temperatures of the pixel points are obtained, pixel points with the differential temperatures not smaller than a preset threshold value are subjected to clustering, N heat sources are obtained, and finally heat sources with the number not smaller than the preset number of pixels are determined as human bodies. Human body detecting is achieved through the temperature changing situations of the zones indoors, various shortcomings of a current infrared detection mode are overcome, and detecting accuracy is improved.

Description

technical field [0001] The invention belongs to the technical field of intelligent control and detection of electrical equipment, and in particular relates to a human body detection method, device and air conditioner. Background technique [0002] With the continuous development of science and technology, automated and intelligent electrical products have become current research hotspots. For example, when it is detected that there are people in the room, it can automatically adjust the indoor temperature and humidity to the best state, and when it is detected that there is no one in the room for a long time Automatically shut down when the time comes, and realize the smart air conditioner of smart energy saving. [0003] At present, smart air conditioners mostly use infrared human body sensors to perceive and detect the presence of human beings in the room, and perform corresponding intelligent control based on the detection results. The infrared human body sensor senses t...

Claims

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Application Information

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IPC IPC(8): F24F11/00G01K3/08
CPCF24F11/00G01V9/00
Inventor 毛跃辉陶梦春王子梁博
Owner GREE ELECTRIC APPLIANCES INC
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