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Human body existence judgment method and system

A technology of human body and judgment results, applied in the field of intelligent judgment, it can solve the problem of lack of accuracy of human judgment.

Pending Publication Date: 2021-12-14
WUHAN LINPTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method and system for judging the presence of a human body to solve the problem that the accuracy of judging the human body by existing human body presence sensors is not high

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  • Human body existence judgment method and system
  • Human body existence judgment method and system

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Embodiment Construction

[0035] 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. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0036] In the description of the specification of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper part", "lower part", "upper end", "lower end", "lower surface" and "upper surface" are based on the drawings The orientations or positional relationships shown are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply tha...

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Abstract

The invention provides a human body existence judgment method and system. The method comprises the steps of: obtaining first distance data at a first moment and second distance data at a second moment, and obtaining a first echo frequency at the first moment and a second echo frequency at the second moment; calculating a distance data difference value between the first distance data and the second distance data, and judging whether the distance data difference value exceeds a specified threshold value or not; calculating a frequency data difference value of the first echo frequency and the second echo frequency, and judging whether the frequency data difference value is within a biological characteristic frequency range or not; and if the distance data difference value exceeds the specified threshold value and the frequency data difference value is within the biological characteristic frequency range, preliminarily judging that a moving organism exists, and calculating the obtained distance data and echo frequency by adopting a fusion filtering algorithm to obtain a final judgment result.

Description

technical field [0001] The invention relates to the field of intelligent judgment, in particular to a human body existence judgment method and system. Background technique [0002] In the existing smart home system, it is very important to accurately judge the existence of the human body, which determines the actions of subsequent actuators in the system, such as whether to turn on the lights, whether to draw the curtains, etc. In the existing sensor systems, infrared pyroelectric sensors and ultrasonic sensors are commonly used, but they each have their own shortcomings. [0003] Although the infrared pyroelectric sensor can passively perceive the infrared signal of the living body, it can only recognize the moving living body. In the bedroom, meeting room and other occasions, when a person sits down and moves slightly, it is impossible to know whether there is someone there. As a result, misjudgments will be made, and the lights will be turned off accidentally. Ultrasoni...

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Application Information

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IPC IPC(8): G01S13/04
CPCG01S13/04
Inventor 李一鹏
Owner WUHAN LINPTECH