A method and a device for calibrating a blood pressure estimation model for determining tonoarteriogram signals

A calibration device of a blood pressure estimation model for determining TAG signals, comprising:

• a PTT determining module for determining a PTT of a respective pulse wave at a respective moment of time in a preset region during a preset movement process of a preset portion of a target subject in a plurality of preset time periods in response to a first pressure applied at a preset degree to a first preset location;
• the preset region is a region of an initial location of the first preset location;
• a sample blood pressure information determining module for performing a derivation for a qcurve composed of the respective PTT at a respective moment of time within each of the preset time period, determining a moment of time when a derivative satisfies a first preset condition as a first moment of time, acquiring a first pressure of each of the first moment of time, acquiring a second pressure according to a distribution of the first pressure of all the first moment of time;
• acquiring a first height difference oaf the:
• first preset location at the first moment of time relative to a heart location:
• obtaining a first target height difference according to a distribution of all the first height differences;
• determining a sample blood pressure information within the preset time period according to the second pressure and the first target height difference;
• the sample blood pressure information comprises at least one of a sample mean blood pressure, a sample SBP and a sample DBP:
• a blood pressure estimation model obtaining module for performing a calibration for a pre-established initial blood pressure estimation model indicating a relationship between the blood pressure information and a physiological signal based on the sample blood pressure information and the sample physiological signal of the plurality of preset time periods, obtaining a target blood pressure estimation model;
• a beat-to-beat blood pressure information determining module for acquiring a continuous target physiological signal of the target subject at the first preset location, inputting the continuous target physiological signal to a pre-established target blood pressure estimation model to acquire a plurality of beat-to-beat blood pressure information output by the target blood pressure estimation model;
• the target physiological signal comprises a target PPG signal;
• TAG signals determining module for determining TAG signals of the target subject according to a continuous target PPG signal and the beat-to-beat blood pressure information.