Sapphire optical fiber blackbody cavity high-temperature sensor and temperature measurement method thereof

A high temperature sensor, black body cavity technology, applied in instruments, thermometers, measuring devices, etc., can solve the problems of poor corrosion resistance, difficult to work normally, short life of thermocouples, etc., to achieve easy operation, reduce installation and protection difficulties, The effect of low energy transmission loss

Inactive Publication Date: 2016-12-14
江苏能建机电实业集团有限公司
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Problems solved by technology

However, high-temperature thermocouples are generally made of precious metal materials. In high-temperature environments, thermocouples have disadvantages such as poor corrosion resistance, short life, and serious loss.
And it is difficult to work normally in the environment of strong corrosiveness and strong electromagnetic interference

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  • Sapphire optical fiber blackbody cavity high-temperature sensor and temperature measurement method thereof
  • Sapphire optical fiber blackbody cavity high-temperature sensor and temperature measurement method thereof
  • Sapphire optical fiber blackbody cavity high-temperature sensor and temperature measurement method thereof

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Embodiment Construction

[0024] The present invention will be further described in detail below in conjunction with the drawings and implementation methods.

[0025] Combine figure 1 with figure 2 The device of the present invention includes a sapphire fiber black body cavity sensor head and a circuit system. The sapphire fiber black body cavity sensor head is mainly composed of a sapphire fiber plated with a black body cavity, a matching sleeve and a quartz fiber; the circuit system is an analog circuit, which is composed of The photodetector 1, the preamplifier 2, the AD sampling module 3, the signal processing module 4, and the display module 5. All the modules are integrated on a circuit board, and the connection between the sensor head and the analog circuit is realized by the energy transmission fiber. The invention converts the optical signal into an electrical signal in real time by a photodetector, introduces an analog circuit and a method of radiation temperature measurement curve fitting to pr...

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Abstract

The invention discloses a sapphire optical fiber blackbody cavity high-temperature sensor and a temperature measurement method thereof, and is applicable to the field of high-temperature measurement. The sensor comprises a sapphire optical fiber blackbody cavity sensing head, an energy transmitting optical fiber, a photoelectric detector, a pre-amplifying module, an AD sampling module, a signal processing module and a display module. A sapphire optical fiber blackbody cavity has the radiation characteristic approximate to that of an ideal blackbody, thermal radiation energy of a temperature field can be transmitted to the photoelectric detector by the energy transmitting optical fiber to be converted into an electric signal, the electric signal is acquired by the AD sampling module, the signal processing module analyzes and calculates a sampled digital signal, and finally, by data fitting and calibration, a corresponding function relationship between a temperature and the electric signal is obtained so as to implement measurement on the temperature. The sapphire optical fiber blackbody cavity high-temperature sensor disclosed by the invention is simple in system structure and convenient to use.

Description

Technical field [0001] The invention belongs to the field of optical fiber temperature sensing, and relates to a sapphire optical fiber black body cavity sensor that can be used to continuously measure high temperatures, in particular to a sensor radiation temperature measurement method. Background technique [0002] The radiation thermometer calculates the corresponding temperature by non-contact measurement of the energy of thermal radiation, so it has been widely used in the fields of industry and scientific research. It has the advantages of high temperature measurement accuracy and good repeatability, and is widely used in high temperature measurement. For example, the MS / MI series infrared thermometers of Germany Saiteng have a system accuracy of 0.5% of the measured value in the range of 1500°C to 2500°C, a repeatability of 0.1% of the measured temperature value +1K, and a temperature resolution of 0.1°C. Although non-contact infrared temperature measurement can have a hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K11/32
CPCG01K11/32
Inventor 王鸣郭余庆王军郭维王读根蒋伟
Owner 江苏能建机电实业集团有限公司
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