Temperature simple calibrating method suitable for reflection-type polarization-preserving fiber temperature sensor

A temperature sensor and polarization-maintaining fiber technology, which is applied in the field of temperature calibration with simple operation, can solve the problems of complex processing process, cumbersome and time-consuming data acquisition, and inability to evaluate the calibration quality, and achieves the effect of satisfying performance requirements and excellent stability.

Inactive Publication Date: 2008-05-21
BEIHANG UNIV
View PDF0 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. Data acquisition is cumbersome and time-consuming, and a large amount of data needs to be measured
[0007] 2. The process of calculating the calibration parameters is cumbersome: to calculate the calibration parameters, a large amount of data needs to be entered into the computer first, and then the data curve is fitted, and the processing process is complicated
[0008] 3. The calibratio...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Temperature simple calibrating method suitable for reflection-type polarization-preserving fiber temperature sensor
  • Temperature simple calibrating method suitable for reflection-type polarization-preserving fiber temperature sensor
  • Temperature simple calibrating method suitable for reflection-type polarization-preserving fiber temperature sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] According to the connection of each device as shown in Figure 2, the microprocessor in the signal detection circuit selects the C8051F060 chip, the photodetector selects the PFTM911 InGaAs planar structure PIN-FET detector, and the standard thermometer selects the XMT-5 intelligent digital sensor with a platinum resistance The display control instrument, the digital voltmeter uses the 34970A voltmeter produced by agilent company, the acquisition card uses the NI company's GPIB card, and the computer uses the P4 1.6G processor.

[0083] The sensing head of the temperature sensor and the sensing head of the standard thermometer are fixed together with insulating tape, and placed in a ceramic closed constant temperature electric furnace to heat the beaker. The temperature was raised from room temperature to 75°C, then lowered, and the experimental data were collected in real time. The collected temperature T 0 and the voltage value V 0 Draw a T-V curve, and use Origin so...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a simple temperature calibrating method for a reflective polarization-maintaining optical fiber temperature sensor. Before calibrating the reflective polarization-maintaining optical fiber temperature sensor, a digital voltmeter is connected between an opto-electrical detector and a signal detecting circuit in series and a standard thermometer is arranged in the in-site environment; a collection card is adopted to realize information interaction between a computer and the digital voltmeter as well as the standard thermometer. The calibrated reflective polarization-maintaining optical fiber temperature sensor acquires a calibrated temperature nonlinear five times multi-item fitting model, namely T0=A0''+A1''*V1+A2''*V1<2>+A3''*V1<3>+A4''*V1<4>+A5''*V1<5>. The calibrating method of the invention not only maintains the calibrating precision of the prior art, but also reduces calibrating workload, namely, the whole sensor can be calibrated only by measuring temperature in a certain moment, therefore, the invention meets the requirement of long-term temperature monitoring for performance of the sensor under the complex condition of the construction site.

Description

technical field [0001] The invention relates to a temperature calibration method of an optical fiber temperature sensor, more particularly, a calibration method suitable for a reflective polarization-maintaining optical fiber temperature sensor that can be easily operated at an industrial site. Background technique [0002] The calibration of the temperature sensor, the key component of the temperature measuring equipment, is an important link to ensure the accuracy of the equipment. The accuracy of the calibration results and the stability of the algorithm directly affect the accuracy of the results produced by the temperature sensor. Therefore, the calibration of the temperature sensor is a prerequisite for the follow-up work. [0003] At present, the reflective polarization-maintaining optical fiber temperature sensor has good static accuracy and dynamic performance, which can meet the technical indicators of the equipment, but the temperature sensor will change when the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01K15/00G01K11/32
Inventor 杨远洪郭锦锦段玮倩申彤
Owner BEIHANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap