Non-invasive real-time monitoring of wrist-worn devices showing physical health status
A real-time monitoring and health technology, applied in the directions of diagnostic recording/measurement, medical science, sensors, etc., can solve the problem of not being able to continuously monitor and display the health status of the human body in real time, and achieve the effect of preventing the danger of cardiovascular and cerebrovascular diseases.
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Embodiment 1
[0027] Detection of pulse and pulse waveform: Human blood flows in waves at a certain speed due to the contraction and relaxation of the heart in the blood vessels. The pulsation strength at the radial artery is proportional to cardiac output, cardiac output, systolic pressure, and diastolic pressure It is closely related to the cardiovascular function of the human body. The hemoglobin (Hb) and oxyhemoglobin (HbO2) in blood vessels will change regularly with the pulsation at the radial artery. In this embodiment, the amount of light reflected by the pulsating wave at the radial artery is irradiated with red light and infrared light, that is, Hb and The characteristics of HbO2 on the difference between red light and infrared light absorption coefficient, collect characteristic data, process and calculate, and finally restore the pulse signal and pulse waveform at the radial artery, and calculate the health of human cardiovascular system based on real-time pulse waveform data thr...
Embodiment 2
[0030] Detection of body temperature measurement: the human body continuously radiates heat through the skin and spreads it in the form of infrared radiation, including infrared light (940nm) wavelength, the known value of body temperature will emit a certain amount of infrared light to the vicinity through the skin , the infrared light received by the sensor will output a relatively stable voltage value, this feature can be used as the basis for measuring the surface temperature of the human body.
[0031] This embodiment uses an infrared light (940nm) wavelength to work, so it is relatively easy to realize body surface temperature measurement.
[0032] Specific implementation method: when the integrated photoelectric sensor is working, it detects the amount of infrared light emitted by the skin surface at the radial artery, and filters and amplifies the voltage value at this time, and then inputs it to the A / D sampling port of the single-chip microcomputer for continuous samp...
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