Non-contact real-time measurement method and system for human respiration parameters

The invention discloses a non-contact real-time measurement method for human respiration parameters. The method comprises the following steps of: establishing a channel state information (CSI) data acquisition hardware platform; allowing a Wi-Fi receiving and transmitting end to synchronously switch channels and combine the CSI data acquired under a plurality of WiFi channels; constructing a new channel in a wired direct connection mode (WDC), taking the newly-constructed channel as a reference channel, and performing noise reduction on the CSI data of the combined channel; solving a power delay spectrum by using the CSI data having undergone noise reduction; acquiring a time domain spectrogram through multiple times of sampling of a power time delay spectrum, and recognizing a signal amplitude sequence corresponding to multiple paths and caused by respiration from the time domain spectrogram; and measuring respiration parameters in the signal amplitude sequence corresponding to the multiple paths and caused