Double Wavelength and Different Frequency Based Pulse Wave Testing Using Photoelectric Sensor

People pay more and more attention to health in modern society, and diagnosis without harm plays most essential role in medical area. The pulse wave signal reflects a lot of important information of human body, including rich pathology and physiology information. Contrary to conventional ways, the circuit´s accuracy increases a lot and it supports collecting more than one blood information in one time, by using light in separate wavelengths to enter human tissue. Using the photoelectric sensor, this paper presents a new and efficient way to get accuracy and useful information about pulse wave. In normal light condition, the proposed method can generate clear wave for later medical processing. The result shows facility of access and practicability.