Multi-human-body vital sign synchronous monitoring system and method based on millimeter wave perception

Abstract

The invention discloses a multi-human-body vital sign synchronous monitoring system and method based on millimeter wave perception. The multi-human-body vital sign synchronous monitoring system comprises a millimeter wave radar front-end module, a microcontroller, a processor, and a display and recording module, wherein the millimeter wave radar front-end module is used for transmitting a linear frequency modulation continuous wave microwave or millimeter wave signal, receiving a reflected echo signal, and generating multi-channel intermediate-frequency baseband signals; the microcontroller sets and controls waveform parameters, transmitting power, signal gain parameters and the monitoring process and sets and controls collecting parameters of a signal collecting module of the processor; the processor extracts vital sign parameter information of the human body from the multi-channel intermediate-frequency baseband signals; and the display and recording module is used for displaying and storing the information which is obtained by the processor and comprises the multi-human body position information, chest wall micro-motion displacement information and the vital sign parameters. The non-contact vital sign monitoring system and the non-contact vital sign monitoring method which are high in measurement precision, strong in anti-interference capability, reliable and stable are provided for synchronous monitoring of vital signs of multiple human bodies.

Description

technical field [0001] The invention relates to a technology in the field of medical detection, in particular to a system and method for synchronously monitoring vital signs of multiple human bodies based on millimeter wave sensing. Background technique [0002] Traditional vital sign monitoring instruments are mostly used in clinical medicine. They detect the heart rate and respiratory rate of the human body through contact sensors such as light, electricity, and pressure. They are represented by existing medical electrocardiographs (ECG) and wearable health monitoring equipment. The traditional contact vital sign monitoring method requires the sensor to be in contact with body parts, which will inevitably cause tension and discomfort of the subject, resulting in measurement errors, and is not suitable for long-term monitoring. The laser-based non-contact measurement method cannot be blocked by clothing, and its applicable scenarios are limited; in the existing microwave vi...

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Problems solved by technology

[0003] The present invention aims at the deficiency that the existing vital signs monitoring methods cannot realize synchronous monitoring of multiple human bodies and the accurate extraction of vital signs, and the coupling interference of adjacent multiple human body targets and the aliasing interference of multiple human body targets at the same distance in the existing microwave measurement method , a system and method for synchronous monitoring of multi-human vital signs based on millimeter wave sensing is proposed to provide a non-contact vital sign monitoring system and method with high measurement accuracy, strong anti-interference ability, reliability and stability for synchronous monitoring of multi-human vital signs

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