Biological temperature detection system and method based on optical fiber beat frequency technology
A detection system and detection method technology, which can be applied to thermometers, thermometers, measuring devices and other directions with physical/chemical changes, can solve problems such as inconvenient measurement of small organisms, and achieve the effects of simple structure, good stability and high measurement accuracy
Inactive Publication Date: 2021-10-08
JIANGNAN UNIV +1
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However, for the measurement of these physical quantities, all use erbium-doped or a certain section of the resonant cavity as the sensing part, and measure by changing the length of the resonant cavity (such as Yu X, Dong X, Chen X, et a l. Po l ar imetr i c Mu l t i l ongitud i na l Mode Fiber Laserfor Simu ltaneous Measurement of Strain and Temperature[J].Journa l ofLightwave Technology,2016,34(21):4941-4947.), it is inconvenient to place into smaller containers for measurements of smaller organisms
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[0041] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.
[0042] Such as figure 1 As shown, it is a biological temperature detection system based on optical fiber beat frequency technology in a preferred embodiment of the present invention, which includes: laser 1, wavelength division multiplexer 2, fiber laser resonator 3, photodetector 5, radio frequency spectrum analyzer 6. Computer 7, the fiber laser resonator 3 includes a fiber amplifier 32 and a first fiber grating 31 and a second fiber grating 33 whose center wavelength matches, and the first fiber grating 31 and the second fiber grating 33 pass through the fiber amplifier 32, and the second fiber grating 33 is placed in the container 4 containing the living body. refer to figu...
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The invention discloses a biological temperature detection system and method based on an optical fiber beat frequency technology, and the system comprises a laser, a wavelength division multiplexer, an optical fiber laser resonant cavity, a photoelectric detector, a radio frequency spectrum analyzer, and a computer. The optical fiber laser resonant cavity comprises an optical fiber amplifier, and a first optical fiber grating and a second optical fiber grating; the central wavelengths of the first optical fiber grating and the second optical fiber grating are matched, the first optical fiber grating and the second optical fiber grating are connected through the optical fiber amplifier, and the second optical fiber grating is arranged in a container containing an organism. The biological temperature detection system based on the optical fiber beat frequency technology of the present invention can measure the temperature of a small-size organism and has the advantages of being simple in structure, low in cost, high in measurement precision, good in stability and the like.
Description
technical field [0001] The invention relates to the technical field of biological temperature detection, in particular to a biological temperature detection system and method based on optical fiber beat frequency technology. Background technique [0002] Biological temperature detection has always been a hot research direction, and the detection of biological temperature signals is of great significance to biomedicine, biofood and clinical operations. [0003] With the continuous development of science and technology, the temperature detection of cells and tissues has become more and more complicated, and higher requirements have been put forward for the performance indicators of biological temperature sensors, such as measurement accuracy, sensitivity and applicability. Grating sensors can no longer meet these requirements, so it is particularly important to find a higher quality biological temperature sensor. [0004] Fiber Bragg grating sensors have strong immunity to el...
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Login to View More IPC IPC(8): G01K11/3206
CPCG01K11/3206
Inventor 郭瑜沈言霞童星星张晓娟孙秀兰陆波丁文杰
Owner JIANGNAN UNIV