Pulse monitor

Abstract

The invention discloses a pulse monitor, which belongs to the technical field of medical device design and includes a photoelectric sensor, an amplifying circuit, an active filter, a shaping circuit, a single-chip microcomputer, and an LED lamp. The photoelectric sensor is connected with an amplifying circuit, and the photoelectric sensor receives The weak pulse signal is amplified by the amplifying circuit, the active filter is connected with the amplifying circuit, the amplified pulse signal is filtered by the active filter, and a shaping circuit is connected to the other end of the active filter. The disclosed pulse monitor is sensitive to the intensity of light, and is also sensitive to the transmission, occlusion, reflection, and interference of light. It can be used to measure size, displacement, speed, and temperature. It can effectively improve the anti-interference ability and can be easily passed through LED lights. The regularity of flickering can accurately judge the patient's heart rate, and the detection is convenient.

Description

technical field [0001] The invention relates to the technical field of medical device design, in particular to a pulse monitor. Background technique [0002] With the development of science and technology, the pulse measurement technology has become more and more advanced, and the measurement accuracy of the pulse has become higher and higher. Different types of pulse measuring instruments have been developed at home and abroad. Research on contact sensors. Finger pulse measurement is more convenient and simple, but because there are many sweat glands on the fingers, the finger clip is used all the year round, and pollution may reduce the measurement sensitivity: the ear pulse measurement is relatively clean, the sensor use environment is less polluted, and it is easy to maintain. However, because the ear pulse is weak, especially when the season changes, the measured signal is significantly affected by the ambient temperature, resulting in inaccurate measurement results. ...

AI Technical Summary

Problems solved by technology

Finger pulse measurement is more convenient and simple, but because there are many sweat glands on the finger, and the finger clip is used all year round, pollution may reduce the measurement sensitivity: ear pulse measurement is relatively clean, the sensor uses less environmental pollution, and is easy to maintain

However, because the ear pulse is weak, especially when the season changes, the measured signal is significantly affected by the ambient temperature, resulting in inaccurate measurement results

In the past, daily monitoring instruments that appeared in hospital clinical monitoring and daily middle-aged and elderly care, such as portable electronic sphygmomanometers, can complete pulse measurement, but this portable electronic sphygmomanometer uses a micro air pump to pressurize the rubber air bag, and each measurement requires a In the process of pressurization and decompression, there are disadvantages such as bulky volume, discomfort during the process of pressurization and decompression, and low accuracy of pulse detection.

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