Waveform-audio-fused ultra-wideband radar life detector

Abstract

The invention discloses a novel waveform parameter-audio-fused ultra-wideband radar life detector. A radar echo is divided into two paths: one path is processed and extracted into a respiratory signal, and then whether the respiratory signal is a life parameter of a human being is intelligently identified; and the other path is processed into an audio signal through amplitude modulation or frequency modulation, and through multi-channel and noise masking characteristics of a human ear, information carried by the radar echo is monitored in real time in a listening way to obtain information which is difficultly expressed by waveform of an ultra-wideband biological radar echo so as to identify whether a biological radar echo signal carries life information artificially. Through the two processing and identifying ways, the life detection accuracy is greatly improved; and the novel waveform parameter-audio-fused ultra-wideband radar life detector breaks through a limitation that the conventional radar life detector relies on a single waveform parameter for identification, improves the practicality of the radar life detector and has a good application prospect.

Description

technical field [0001] The invention belongs to the field of life information acquisition and detection, in particular to an ultra-wideband radar life detector combining waveform and audio frequency. Background technique [0002] Ultrawideband (UWB) radar is a new system radar, because it has the advantages of high distance resolution, strong penetrating ability, good anti-moving target interference ability and suitable for long-distance non-contact detection, etc., it is widely used in clinical monitoring , Anti-terrorist struggle, disaster rescue, border defense customs security inspection, national security and other fields have more and more applications. Especially in the field of life detection, it has been well applied. The life detector based on ultra-wideband radar is a typical application. [0003] The traditional ultra-wideband radar life detector mainly displays the detected life parameters (mainly the breathing signal of the detection object) on the display scr...

AI Technical Summary

Problems solved by technology

This method relies on human vision or algorithms to make judgments, requires the observer to have a deep understanding of waveforms or graphics, and has certain experience, and requires the algorithm to have superior performance and constantly adapt to various complex environments. However, in practice Misjudgments and omissions are still found

In addition, this method of displaying on the display screen requires the user to place the display screen at a position close to himself and observe the screen with his eyes all the time, which takes up most of the energy and attention of the user

Users are often unable to quickly recognize and respond to environmental changes, and put themselves and equipment in danger in complex environments and occasions such as disaster relief or anti-terrorism struggles

At the same time, in the case of strong light or fire, the observer cannot see the screen clearly due to the insufficient brightness and contrast of the display screen, and cannot capture the information of the measured object in time.

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