Optoacoustic effect-based heart rate measuring method and device

A photoacoustic effect, measuring device technology, applied in the directions of diagnostic recording/measurement, application, medical science, etc., can solve the problems of inconvenient use, inaccurate measurement data, weak signal, etc., and achieve easy portability, convenient operation and stable performance. Effect

Inactive Publication Date: 2015-08-19
JIANGXI SCI & TECH NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The instrument of electrocardiogram measurement needs to touch the skin and wear the measuring device on the chest, which is very inconvenient to use
The photoelectric transmission measurement method is very vulnerable to external interference due to the extremely weak signal, resulting in inaccurate measurement data

Method used

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  • Optoacoustic effect-based heart rate measuring method and device
  • Optoacoustic effect-based heart rate measuring method and device
  • Optoacoustic effect-based heart rate measuring method and device

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Embodiment Construction

[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0015] A method for measuring heart rate based on the photoacoustic effect, comprising the following steps:

[0016] 1) Send a sinusoidal continuous wave near-infrared light source to the organism, and receive the sound wave radiated by the organism excited by the near-infrared light. The detector uses a near-infrared light-emitting diode and an acoustic wave detector, that is, a hollow multi-ring array detection sensor. When the near-infrared light passes through the wrist, the light-absorbing particles absorb the intensity-modulated light energy, and the absorbed light energy is converted into heat energy. Periodic temperature changes are generated inside, causing this part of the material and its adjacent medium to expand with heat and contract with heat, resulting in periodic changes in pressure, thereby generating sound waves who...

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Abstract

The invention discloses an optoacoustic effect-based heart rate measuring method and device. The measuring method includes steps that emitting a continuous sine wave near-infrared light source to a living body, receiving sound wave radiated from the living body under the excitation of the near-infrared light, and the like. The device comprises a hollow multi-ring array detection sensor, a signal amplifier, a blocking and filtering device, a programmable gain amplifier, a micro-controller, a near-infrared module, an LCD display screen, an auxiliary sensor module, a Buzzer buzzer and the like. The device is stable in performance, simple in structure, convenient to carry, convenient to operate, capable of realizing the real-time heart rate monitoring, and capable of being broadly used for different heart rate measuring fields.

Description

technical field [0001] The invention relates to the field of electronic measurement, in particular to a measurement method and device based on the photoacoustic effect. Background technique [0002] At present, heart rate is an evaluation parameter widely used in medicine to evaluate human health status. The traditional heart rate measurement method is stethoscope measurement, but this method is very inconvenient and has large errors. Then there was a piezoelectric heart rate meter that measures heart rate by measuring pulse pressure changes, but the piezoelectric heart rate meter is contact-type, and the operation is cumbersome, and the sensitivity cannot be guaranteed. [0003] There are two common measurement principles of the heart rate meter, one is the cardiac current measurement method, and the other is the photoelectric transmission measurement method. Both measurement methods have certain defects. The instrument of cardiac electrocardiometry needs to touch the ski...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0245A61B5/00
CPCA61B5/0245A61B5/0095A61B5/681A61B5/6824
Inventor 舒正华刘国栋谢志华
Owner JIANGXI SCI & TECH NORMAL UNIV
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