Human motion detection method based on continuous wavelet transform

Abstract

The invention discloses a partition human body motion detection method based on continuous wavelet transformation. The partition human body motion detection method is characterized in that a receiver is used to receive a signal waveform after precoding of a transmitter; the received signal can be segmented into signal segments, and the continuous wavelet transformation of each signal segment can be carried out to acquire a transformation matrix, and then the variance vectors of the transformation matrix can be calculated; and at last, by calculating the maximum value of the variance vectors, and the maximum value can be compared with the threshold value to detect whether the human body motion occurs behind the wall. By adopting the continuous wavelet transformation, the weak target detection problem in the strong noise environment can be solved, and whether the human body motion occurs behind the wall can be effectively detected, and therefore the accuracy of the partition human body motion detection can be greatly improved.

Description

technical field [0001] The invention relates to a method for detecting human motion on a partition wall, more specifically to a method for detecting human motion on a partition wall based on continuous wavelet transform. Background technique [0002] Human body detection within the general line of sight can be detected using optoelectronic devices such as infrared cameras and cameras. These techniques are commonly used in intrusion detection in art galleries and banks. However, these technologies have great limitations and cannot be used to detect objects behind non-transparent walls (or shelters) such as stone, wood, concrete, etc., so the detection technology used must have a perspective effect. At present, detection technologies with perspective effects are commonly based on X-rays and ultrasonic echoes, but none of these perspective technologies can well meet the current needs for human body detection through walls. X-rays are high-energy rays. Although they can penetr...

AI Technical Summary

Problems solved by technology

[0004] Although the traditional wall-penetrating ultra-wideband radar can detect human movement in the partition wall, it occupies a large amount of bandwidth, has a large transmission power, and has a very large antenna array.

However, it is very challenging to use wireless communication devices with small bandwidth, low transmission power, and small size to detect human motion in partition walls. It is necessary to detect weak targets under strong noise.

At present, the technology of the detection method of human body movement on the partition wall realized by this portable device needs to be further studied and discussed.

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