Low-cost multi-channel semiconductor absorption type temperature measurement system and sensing probe preparation process
A semiconductor, multi-channel technology, used in thermometers, measuring devices, measuring heat and other directions, can solve the problems of small temperature measurement range, short light source life, high cost, and achieve the effect of control cost, low volume and low cost
Pending Publication Date: 2020-07-03
西安和其光电科技股份有限公司
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[0008] In order to overcome the problems of high cost, small temperature measurement range and short light source life of the traditional semiconductor absorption temperature measurement system, the present invention provides a low-cost multi-channel semiconductor absorption temperature measurement system
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[0042] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0043] Such as figure 1 As shown, the low-cost multi-channel semiconductor absorption temperature measurement system of this embodiment mainly includes a light source module 1 , an optical fiber coupling module 2 , a temperature measurement module 3 , a spectrum splitting module 4 and a control circuit board 5 .
[0044]The light source module 1 is composed of four independent miniature and low-power tungsten-halogen lamps. In other embodiments, the number can be adjusted according to requirements. The lead wires of each tungsten-halogen lamp are connected to the control circuit board 5 through welding wires and connectors. The optical fiber coupling module 2 selects four quartz glass ball focusing mirrors corresponding to the number of halogen tungsten lamps, and each quartz glass ball focusing mirror corresponds to one halogen tungsten lamp, ...
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The invention belongs to the field of optical fiber temperature measurement, relates to a low-cost multi-channel semiconductor absorption type temperature measurement system and a sensing probe preparation process, and overcomes the problems of high cost, small temperature measurement range, short light source service life and the like of the traditional semiconductor absorption type temperature measurement system. The temperature measurement system comprises a light source module, an optical fiber coupling module, temperature measurement modules, a spectrum light splitting module and a control circuit board, wherein the light source module comprises n halogen tungsten lamp light sources; the optical fiber coupling module is used for coupling n paths of optical signals output by the lightsource module to the corresponding temperature measurement modules respectively; the temperature measurement modules are used for collecting optical signals absorbed by the environment to be measured,and the spectrum light splitting module is used for converting the optical signals output by each path of temperature measurement module into corresponding absorption spectrum curves; and the controlcircuit board is used for controlling the on-off of each halogen tungsten lamp light source according to a set time sequence, and synchronously collecting the absorption spectrum curve correspondingto each halogen tungsten lamp light source according to the on-off time sequence of each halogen tungsten lamp light source. Compared with the prior art, the temperature measurement system is low in cost and can achieve a larger temperature measurement range.
Description
technical field [0001] The invention belongs to the field of optical fiber temperature measurement, and in particular relates to a low-cost multi-channel semiconductor absorption temperature measurement system and a preparation process of a sensing probe. Background technique [0002] In the transformer winding temperature measuring device in the power industry, the optical fiber temperature measuring device has gradually replaced the traditional platinum resistance temperature measuring device with its unique advantages such as high precision, strong anti-interference ability, and small installation size. In principle, optical fiber temperature measurement can be divided into two types: fluorescent optical fiber temperature measurement and semiconductor spectral absorption temperature measurement. The former is widely used, but due to the limitation of fluorescent materials and the principle of self-intensity demodulation, this type of temperature measurement system is widel...
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IPC IPC(8): G01K11/32G01K11/3206
CPCG01K11/3206
Inventor 张文松单娟
Owner 西安和其光电科技股份有限公司