Target infrared sensing determination method and device, electronic equipment

Abstract

The application discloses a target infrared sensing determination method and device, and electronic equipment, which are used for the application of PIR sensors while ensuring the sensing distance and reducing the false alarm rate. The target infrared sensing judgment method includes the steps of step type and / or peak type abnormal data elimination for the collected AD data, wherein: the step type abnormal data elimination step includes according to the n-2 and n-3 sampling points The difference of the AD data difference, the AD data difference at the n-1th sampling point, and the AD data difference at the n-th sampling point, to determine whether the n-2th sampling point is a step jump; if so, then Eliminate the data difference of the n-2 sampling point; the peak type abnormal data elimination step includes the difference between the AD data difference at the n-1 and n-2 sampling points, the n-1 and the n-th sampling The product of the AD data difference at the point is used to judge whether the n-1th sampling point is a peak type jump; if so, the data difference of the n-1th sampling point is eliminated.

Description

technical field [0001] The invention belongs to the technical field of target detection, and in particular relates to a target infrared sensing determination method and device, and electronic equipment. Background technique [0002] Passive infrared sensor technology PIR (Passive Infrared) is often used in infrared detectors or body sensors, and is widely used in the field of security. [0003] Taking human body sensing as an example, the dual-element photosensitive element inside the sensor can effectively convert infrared signals with a wavelength of 8~12um into electrical signals, and the wavelength of human body radiation is mostly concentrated at 8~14um. Through the Fresnel lens with bright and dark partitions, when the human body moves into the sensing area, the infrared signal generated by the temperature change is focused on the photosensitive element, and then converted into a changing electrical signal. Cooperate with the use of high-precision AD to sample and cha...

AI Technical Summary

Problems solved by technology

[0006] The purpose of this application is to provide a target infrared sensing determination method and device, and electronic equipment to solve the problem in the prior art that the false alarm rate cannot be reduced while ensuring the sensing distance

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