Intelligent wearing device and method for measuring physical sign

Abstract

The invention discloses an intelligent wearing device and a method for measuring physical sign, and belongs to the intelligent wearing field. The device comprises a photoelectrical sensor, an inflating ring band, an air valve and a control unit; the air valve is located in the inflating ring band, and used for alternately inflating and deflating the inflating ring band in the opening state, and used for stopping the inflating or deflating of the inflating ring band in the closing state; the photoelectrical sensor is located at the inner side of the inflating ring band, and used for measuring the physical sign; and the control unit is respectively connected with the photoelectrical sensor and the air valve, and used for controlling the opening and closing states of the air valve according to the physical sign parameters measured by the photoelectrical sensor. The intelligent wearing device is capable of measuring the physical sign by automatically controlling the air valve, reducing the effect of the intensity of pressure at the contact position of the photoelectrical sensor and the blood vessel wall for the measuring result of the physical sign, and improving the accuracy of the measuring result.

Description

technical field [0001] The invention relates to the field of smart wearables, in particular to a smart wearable device and a method for measuring signs. Background technique [0002] Photoplethysmography (Photo PlethysmoGraphy, PPG for short) is a non-invasive method for measuring physical sign parameters. It uses a photoelectric sensor to obtain changes in the blood volume of microvessels during the cardiac cycle by tracing the light absorption of the measured parts of the human body in real time, and obtains a pulse wave from which parameters such as heart rate and blood oxygen can be obtained. [0003] Among them, the light emitted by the photoelectric sensor is absorbed by the skin, blood, etc., and then reflected back to the photoelectric sensor. After receiving the light signal, the photoelectric sensor detects the light intensity and calculates the light absorption amount according to the light intensity. Because the blood volume in the skin changes pulsatingly under...

AI Technical Summary

Problems solved by technology

[0004] However, the pressure at the contact position between the photoelectric sensor and the blood vessel wall in the above process will affect the light signal detected by the photoelectric sensor.

When the pressure at the contact position is too large or too small, the light signal detected by the photoelectric sensor will be weakened, which will affect the measurement result and cause the measurement result to be inaccurate

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