Human body sensing method and system based on millimeter wave radar

A millimeter-wave radar and human body perception technology, applied in the millimeter-wave field, can solve the problems of high sensor accuracy, inconvenience, and discomfort, and achieve the effects of wide monitoring range, high positioning accuracy, and fast response speed

Pending Publication Date: 2021-08-17
SHANDONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For non-contact monitoring methods based on pressure sensors, more sensitive piezoelectric films, optical fibers, etc. are used as sensor parts. This method has the advantage of not needing to undres

Method used

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  • Human body sensing method and system based on millimeter wave radar
  • Human body sensing method and system based on millimeter wave radar
  • Human body sensing method and system based on millimeter wave radar

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Embodiment 1

[0029] This embodiment provides a human body sensing method based on millimeter wave radar.

[0030] like figure 1 As shown, a human body perception method based on millimeter-wave radar, based on millimeter-wave radar technology, includes: vital sign data extraction; the specific steps of the vital sign data extraction:

[0031] Step (1-1): The sinusoidal signal transmitted by the millimeter-wave radar is divided into two channels by the power divider, and one channel uses time division multiplexing to transmit frequency-modulated continuous pulse signals to the target on multiple transmitting antennas TX, and passes through multiple radars. The receiver RX receives the echo signal reflected by the target and obtains multiple sets of echo signals;

[0032] Step (1-2): The other path enters the phase shifter in the radar radio frequency circuit, and the two signals output by the phase shifter are mixed with multiple groups of processed echo signals to obtain two I / Q baseband ...

Embodiment 2

[0051] This embodiment provides a human perception system based on millimeter wave radar.

[0052] like figure 2 As shown, a human body sensing system based on millimeter-wave radar adopts the human body sensing method based on millimeter-wave radar described in Embodiment 1, including a vital sign detection module, a human body motion sensing module, a body temperature detection module, and a wireless transmission module. The vital sign detection module, the human body motion perception module, the body temperature detection module and the wireless transmission module are all connected to the processor, and the processor is connected to the display module and the timing reminder module.

[0053] It also includes a power supply module, and the power supply module is connected with the vital sign detection module, the human body movement perception module, the body temperature detection module, the wireless transmission module, the display module and the timing reminder module...

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Abstract

The invention provides a human body sensing method and system based on millimeter wave radar. The method is based on a millimeter wave radar technology and comprises a step of extracting vital sign data. The step of extraction of the vital sign data comprises the following specific steps: step (1-1): dividing a sinusoidal signal transmitted by the millimeter wave radar into two paths by a power divider, allowing one path to transmit a frequency-modulated continuous pulse signal to a target on a plurality of transmitting antennas TX in a time division multiplexing mode, and receiving echo signals reflected by the target through a plurality of radar receivers RX so as to obtain multiple groups of echo signals; step (1-2), enabling the other path to enter a phase shifter in a radar radio frequency circuit, and performing frequency mixing on two paths of signals output by the phase shifter and the multiple groups of processed echo signals so as to obtain two paths of I/Q baseband signals; and step (1-3): demodulating the two paths of I/Q baseband signals, performing filtering and fast Fourier transform to obtain frequency values and peak values of breathing and heartbeat, and outputting breathing and heartbeat rates.

Description

technical field [0001] The invention belongs to the technical field of millimeter waves, and in particular relates to a human body sensing method and system based on millimeter wave radar. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] With the continuous development of social economy, people's material living standards have been greatly improved, and the pace of life has become faster and faster. In today's society with unprecedented improvement in information technology, more and more people are in a tense environment for a long time, their lives become hurried, and they lack exercise. The various diseases caused by this are increasing, among which sudden heart problems There are also more and more accidents caused, which makes more people pay attention to their own health problems. The human body perception system has very important ...

Claims

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Application Information

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IPC IPC(8): A61B5/0205
CPCA61B5/0205A61B5/7257A61B5/7253A61B5/7225
Inventor 赵曰峰王坤
Owner SHANDONG NORMAL UNIV
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