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Passive optical fiber temperature semiconductor sensor

An optical fiber temperature, semiconductor technology, applied in thermometers, thermometers with physical/chemical changes, instruments, etc., can solve the problems of partial discharge, high cost, complex structure, etc., to achieve convenient connection, resistance to external electromagnetic interference, simple structure Effect

Inactive Publication Date: 2011-04-13
SHANGHAI BOOM FIBER SENSING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high-voltage insulation structure of the electronic temperature sensor in the prior art usually has the disadvantages of complex structure, partial discharge, difficult process and high cost. A tool for rapid and accurate temperature monitoring in voltage, high current and strong magnetic field environments

Method used

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  • Passive optical fiber temperature semiconductor sensor
  • Passive optical fiber temperature semiconductor sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: as figure 1 , including an optical fiber 1, an optical fiber insulating sheath 2, a composite insulating skirt 5, a semiconductor diaphragm 3 and a ceramic sleeve 4. Its structural feature is that an optical fiber insulating sheath 2 is tightly wrapped outside the optical fiber 1, and there are several composite insulating skirts 5 made of silicon rubber on the outer insulation of the optical fiber insulating sheath 2; the end surface of the optical fiber 1 is coated with a semiconductor diaphragm 3, Insert one end of the semiconductor diaphragm 3 into a ceramic bushing 4, and seal the contact between the plug and the ceramic bushing 4 with epoxy glue. The ceramic bushing can not only protect the optical fiber pin sensor head, but also shield external interference.

[0014] The laser emits laser light and hits the semiconductor diaphragm 3 through the optical fiber 1. According to the refractive index-temperature physical characteristics of the semiconduct...

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Abstract

The invention discloses a passive optical fiber temperature semiconductor sensor and belongs to the technical field of optical fiber sensing. By tightly coating an optical fiber insulating sleeve outside an optical fiber, a plurality of composite insulating skirt borders made of silicon rubber are insulated outside the optical fiber insulating sleeve; a layer of semiconductor diaphragms are coated on an end face of the optical fiber; one end coated with the semiconductor diaphragms is inserted into a ceramic bushing; the contact part of the plug and the ceramic bushing is sealed by using an epoxy glue; and the ceramic bushing can protect the sensing head of an optical fiber contact pin and shield external interference. The device is safe, reliable and good in insulating performance, the optical fiber is easy to arrange, and the sensor is simple and firm in structure, has a certain shock resistance to the sensing head, is sealed and moisture-proof, has external electromagnetic interference resistance, and can be connected with high-voltage buses conveniently, and the like.

Description

technical field [0001] The invention relates to the technical field of distributed optical fiber sensing, in particular to the technical field of the application of optical fiber temperature semiconductor sensors in high-voltage environments. Background technique [0002] For high-voltage electrical appliances such as large generator sets, high-voltage switches, and high-voltage substation transmission equipment, when the joints are in poor contact, the contact resistance will increase, and heat will be generated when the load current flows. Due to the action of the alternating electromagnetic field, AC high-voltage electrical appliances will also generate eddy current and hysteresis loss in the ferromagnet, resulting in an increase in the temperature of the entire electrical appliance. When the temperature reaches a certain height, the mechanical strength and insulation strength of metals and insulating materials used in high-voltage electrical appliances will be significan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K11/32
Inventor 杨斌皋魏席刚仝芳轩周正仙
Owner SHANGHAI BOOM FIBER SENSING TECH
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