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Ultra-wide bandwidth microwave chaos life detection radar device

A technology for life detection and radar devices, which is applied to measurement devices, radio wave measurement systems, reflection/re-radiation of radio waves, etc. the effect of

Active Publication Date: 2015-07-08
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

At present, the radar system based on chaotic direct radar or chaotic modulation radar to detect vital signs such as human breathing and heartbeat has not been reported in the literature.

Method used

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  • Ultra-wide bandwidth microwave chaos life detection radar device

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Embodiment Construction

[0015] Existing studies have shown that ultra-wideband chaotic direct radar or ultra-wideband chaotic modulation radar has strong anti-electromagnetic interference ability and clutter suppression ability. Detection capability, in addition, ultra-wideband chaotic signals can be generated by analog nonlinear circuits, with simple structure, low cost, and easy integration; the "multi-user" characteristics of chaotic signals also help multiple life detection radars in the same area simultaneously without crosstalk Work.

[0016]The specific embodiment of the present invention uses the improved Colpitts chaotic oscillation circuit (Nonlinear Dynamics, 71(3), 575-580, 2013) to generate ultra-wideband chaotic signals as radar detection signals, and obtains distance information by correlation method. At the same time, combined with solid-state microwave sensors and a lock-in amplifier to detect weak respiratory and heartbeat signals from an extremely noisy environment, and finally rea...

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Abstract

The invention relates to a life detection radar device, in particular to an ultra-wide bandwidth microwave chaos life detection radar device for detecting human body life feature information and distance information. The ultra-wide bandwidth microwave chaos life detection radar device can be used for disaster rescue and comprises a first signal generator, a first power splitter, a frequency mixer, a power amplifier, an ultra-wide bandwidth emitting antenna, an ultra-wide bandwidth receiving antenna, a low noise amplifier, an I / Q demodulator, a second signal generator, a second power splitter, a voltage-controlled phase shifter, an adjustable attenuator, a solid state microwave sensor, a third signal generator, a phase-locked amplifier and a signal collecting and processing module. The life feature information and the position information of trapped persons can be rapidly and accurately detected.

Description

technical field [0001] The invention relates to a life detection radar device, in particular to an ultra-wideband microwave chaotic life detection radar device capable of detecting human life characteristic information and distance information, which can be used for disaster rescue. Background technique [0002] my country is one of the countries with the most active earthquakes and the worst earthquake disasters in the world. Since 2008, large-scale earthquakes have occurred frequently, bringing huge economic losses and casualties to the country, such as the Wenchuan earthquake in 2008, the Yushu earthquake in 2010, the Ya'an earthquake in 2013, and the Yutian earthquake in Xinjiang in 2014. big earthquake. Timely positioning and rescue of the trapped people is the primary task after the disaster. Life detectors can detect survivors buried under ruins, which is the key to disaster relief technology. Among them, compared with infrared, X-ray and ultrasonic life detectors,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/88A61B5/02
CPCA61B5/02G01S13/88
Inventor 刘丽徐航张建国李静霞王冰洁王文珂
Owner TAIYUAN UNIV OF TECH
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