Radar-based non-contact human body breathing detection method and Radar-based non-contact human body breathing detection device

Abstract

The invention discloses a radar-based non-contact human body breathing detection method and a radar-based non-contact human body breathing detection device. An intelligent algorithm is used to discriminate the motion posture of a vital sign target in a detection area, and when a human body target is determined in a quiet state, the respiratory detection is started, and a respiratory value is output. In the event of respiratory abnormality, an alarm message is sent to notify the family member or the nursing staff in time, so that the people can be promptly treated, the reliability of the respiratory detection is remarkably improved, and the technical problem that the current non-contact detection breathing method cannot determine and detect the target state of the human body can be solved;by performing a wavelet analysis algorithm, time-domain peak finding and downsampling processing on the sampled echo signals, a respiratory signal can be accurately identified and the respiratory frequency can be obtained, and the method has the advantages of high accuracy and strong real-time performance.

Description

technical field [0001] The invention mainly relates to the technical field of intelligent detection, in particular to a radar-based non-contact human breathing detection method and device. Background technique [0002] The respiratory signal is an important reference data for judging the health status of vital signs. It can not only be used to detect diseases and judge the health status, but also can predict and alarm some clinical emergencies, such as sudden respiratory distress in patients, infants and the elderly. Stop calling the police. At present, the two commonly used clinical methods for detecting human respiration are the chest impedance method and the carbon dioxide concentration measurement method. The former requires the chest impedance device to be worn on the chest of the person to be tested, which has problems with wearing comfort, while the latter is expensive and requires professional testing. The detection of nursing staff operations. [0003] Non-contact...

AI Technical Summary

Problems solved by technology

The patent with the notification number CN105997083A discloses a human breathing detection device and its detection method. It uses ultra-wideband pulse radar to detect the breathing of vital signs targets, which can avoid the problems caused by wearable detection equipment such as breathing, but it only uses A simple standard threshold is established to judge respiratory arrest. Once the environment of the detection area changes or other interference is strong, the detection effect is difficult to achieve the ideal state, and it cannot effectively distinguish whether the detection target has abnormal breathing or respiratory arrest.

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