Terminal and blood pressure measuring method

Abstract

The invention provides a terminal and a blood pressure measuring method. The terminal comprises a flash lamp, a processor and at least two cameras; a preset distance exists between every two cameras, the flash lamp is used for emitting lamp light with preset frequency under the control of the processor, the cameras are used for collecting photoplethysmography (PPG) signals under the control of the processor, and the PPG signals are the signals which are generated by reflecting the lamp light through the limbs, covering the cameras, of a user and received by the cameras; the processor is used for controlling the flash lamp to emit the lamp light with the preset frequency and controlling the cameras to sequentially collect the PPG signal in the preset frequency, at least one PPG signal collected by each camera is obtained, the pulse-wave propagation velocity is determined according to the PPG signals collected by the cameras, and the measured blood pressure of the user is obtained according to the pulse-wave propagation velocity. The terminal and the blood pressure measuring method can improve the accuracy of the measured blood pressure.

Description

Technical field [0001] The present invention relates to the technical field of smart terminals, in particular to a terminal and a blood pressure measurement method. Background technique [0002] Blood pressure is the lateral pressure on the vascular wall when blood flows in the blood vessels. The level of blood pressure directly reflects the key human body factors such as cardiac ejection ability, blood viscosity, vascular elasticity, and peripheral vascular resistance. Excessive blood pressure may cause arteriosclerosis, Coronary heart disease, heart rate failure, etc., too low blood pressure may cause myocardial infarction or shock. Therefore, too low or high blood pressure (hypotension, hypertension) will cause serious consequences. At present, there are 130 million hypertensive patients in my country, and nearly half of them do not know that they have hypertension. The treatment rate and control rate of hypertension are lower, 28.2% and 2.9% respectively. Therefore, how to be...

AI Technical Summary

Problems solved by technology

[0004] However, with the current PTT measurement method, since the distance between the two sensors is susceptible to changes due to human movement, it will directly affect the pulse

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