Method, device and system for detecting photoplethysmograph pulse wave of fingertip

Abstract

The invention relates to the field of pulse wave detection, and especially relates to a method, a device and a system for detecting the photoplethysmograph pulse wave of a fingertip. The method comprises the following steps: receiving an initial pulse wave detection signal transmitted by the pulse wave detection device; reconstructing an initial pulse waveform pattern according to the initial detection signal; generating a light intensity adjustment command if the initial pulse waveform pattern is nonstandard; transmitting the light intensity adjustment command to the pulse wave detection device in order to obtain a target pulse detection signal, wherein the target pulse detection signal is obtained through adjusting the light intensity of detected lights by the pulse wave detection deviceaccording to the light intensity adjustment command; and reconstructing a standard pulse wave pattern according to the target pulse detection signal. The powerful computing power of a smart phone isused to analyze the shape and the feature point of the waveform, the intensity of the detected lights emitted by the pulse wave detection device is adjusted, the provided pulse wave detection device is only responsible for data acquisition, communication and circuit control, and a low-cost and low-power micro-control chip is used, so the cost is reduced.

Description

technical field [0001] The invention relates to the field of pulse wave detection, in particular to a fingertip photoplethysmography detection method, equipment and system. Background technique [0002] Cardiovascular and cerebrovascular diseases have the characteristics of high morbidity, high mortality, and multiple complications. Studies have found that changes in the structure and function of arterial vessels are the root cause of these diseases. Therefore, early detection of abnormalities in vascular function and structure is of great significance for detecting early cardiovascular diseases and intervening in the changing process. Photoplethymography (PPG) is a photoelectric measurement technique used to measure changes in blood volume in human tissue, and the signal reveals rich information about the cardiovascular circulatory system, especially the arterial vasculature. For the prevention and treatment of cardiovascular diseases, the use of PPG detection technology t...

AI Technical Summary

Problems solved by technology

[0003] But because it relies on the accurate detection of reflected pulse, because the reflected pulse wave of the elderly and vascular sclerosis (coronary heart disease, etc.) The missing phenomenon prevents the elderly and patients with arteriosclerosis from using photoplethysmography, a simple and easy-to-use cardiovascular disease prevention and diagnosis technology

The reason for this problem is that the existing instruments using PPG technology all use technology that cannot adjust the intensity of the transmitted light source, and cannot adjust the circuit according to the characteristics of the pulse wave waveform, resulting in the inability to dynamically adjust the pulse wave waveform for optimization.

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