Life signal monitoring method based on millimeter wave radar

Abstract

The invention discloses a life signal monitoring method based on a millimeter wave radar. The method comprises the steps: a data obtaining module, which comprises a millimeter wave radar, the millimeter wave radar transmiting a frequency modulation signal, a human chest reflecting an echo signal, and finally transmiting data to a data processing module through a mixer and a sampler integrated with the millimeter wave radar; a data processing module, which is used for processing intermediate frequency signals in the data sent by the data acquisition module through background noise filtering, phase extraction, respiration and heartbeat separation, respiration and heartbeat reconstruction, distance frequency separation and calculation amount reduction methods to obtain heart rate, respiration and human chest displacement distance; and a subsequent application module, which collects and processes data in real time through multiple processes, uploads the data to a cloud server, and visualizes the heart rate, respiration and human chest displacement distance by using a GUI (Graphical User Interface), so that a guardian can conveniently check at any time.

Description

technical field [0001] The invention relates to the field of vital sign monitoring, in particular to a method for monitoring vital signs based on millimeter wave radar. Background technique [0002] In recent years, China's population aging has developed rapidly, and the number of people aged 65 and above and their proportion in the total population have continued to increase. It is expected that China will enter an aging society from an aging society in 2022. As the phenomenon of aging continues to intensify, the issue of support for the elderly is receiving more and more attention, and how to provide early warning for the health of the elderly has become a major issue. If real-time and long-term monitoring of the vital signs of the elderly can be carried out, it will help to establish a health baseline for the elderly, and when the health of the elderly deteriorates, an early warning will be sent to the elderly and doctors, indicating that further medical care may be neede...

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Problems solved by technology

[0004] The equipment required for the above heart rate and respiratory rate detection methods are all contact detection devices. Wearing the device for a long time or while sleeping will often make the user feel uncomfortable, and the contact detection device is generally only suitable for a single person, and cannot handle multiple people at the same time. detected scene

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