Photoelectric plethysmography photoelectric detection sensor

Abstract

The invention discloses a photoelectric plethysmography photoelectric detection sensor. The photoelectric plethysmography photoelectric detection sensor comprises a first photoelectric detection assembly, a second photoelectric detection assembly and a third photoelectric detection assembly, wherein the first photoelectric detection assembly comprises a first light emitting module, a first reflecting mirror which is matched with the first light emitting module, a first light filter and a first photosensitive pipe, a light signal transmitted by the first light emitting module is reflected by the first reflecting mirror to run through the first light filter to be received by the photosensitive pipe, and the first light emitting module comprises a green-light LED lamp. According to the photoelectric plethysmography photoelectric detection sensor, green light and infrared light are adopted as light sources, the reflecting rate of the green light is high, the reflected light intensity is high, the measuring perceiving degree of the photosensitive pipe is high, the signal detected by the photosensitive pipe is processed through an amplifier, so that the precision of the sensor is high, and the sensitivity is good; the light filter which is coated with a nanometer coating is arranged in front of the photosensitive pipe, so that the light of a non-test light source and the light beyond the wavelength range of the photosensitive pipe can be effectively filtered.

Description

technical field [0001] The invention relates to a photoelectric detection sensor, in particular to a photoelectric volume pulse wave photoelectric detection sensor. Background technique [0002] The periodic contraction and relaxation of the human ventricle leads to the contraction and relaxation of the aorta, making the blood flow pressure propagate from the root of the aorta along the entire arterial system in the form of waves. This wave is called pulse wave. The comprehensive information of the shape, intensity, speed and rhythm presented by the pulse wave largely reflects the blood flow characteristics of many physiological and pathological conditions in the human cardiovascular system. The traditional pulse measurement adopts the pulse diagnosis method. The pulse diagnosis technology of traditional Chinese medicine is the effective application of pulse measurement in traditional Chinese medicine. However, it is affected by human factors and the measurement accuracy is ...

AI Technical Summary

Problems solved by technology

However, these viewpoint detection sensors do not deal with the interference of the light source, and the light enters the photosensitive tube for processing after scattering and flashing, resulting in poor performance, sensitivity and accuracy.

Images