scholarly journals Frequency sweep extension using the Kerr effect for temperature measurement range enhancement in Chirped Pulse φ-OTDR

2021 ◽  
Author(s):  
Yuan Wang ◽  
Xiaoyi Bao ◽  
Liang Chen ◽  
Ole Krarup
Keyword(s):  
Temperature Measurement ◽  
Kerr Effect ◽  
Measurement Range ◽  
Frequency Sweep ◽  
Chirped Pulse

Research on and Applications of Au/Pt Thermocouples

2013 ◽  
Vol 483 ◽  
pp. 105-109
Author(s):  
Guo Chang Zhao ◽  
Chun Lei Zhao ◽  
Li Ping Song ◽  
Xian Yi Tong
Keyword(s):  
Temperature Measurement ◽  
Wide Spectrum ◽  
Measurement Range ◽  
Great Promise ◽  
Measuring Devices ◽  
Current State ◽  
High Temperature Measurement ◽  
Calibration Methods ◽  
Operational Life ◽  
The Us

Elemental thermocouples are capable of meeting the demanding requirements of high temperature measurement with high accuracy, wide temperature measurement range, and long operational life. With an ever increasing need for more accurate, more precise temperature measuring devices over a wide spectrum of temperatures, elemental thermocouples show great promise when compared with its counterparts. The Au/Pt thermocouple, one of the more effective elemental metal combinations, is the ideal standard thermometer in the range of 0°C - 1000°C due to its reproducibility, accuracy, stability, and durability, causing the US and Korea to standardize its use. Much academic work has been done on the accuracy, stability, thermoelectric properties, structural design, and calibration methods of Au/Pt thermocouples to develop it to its current state. This paper summarizes research done on Au/Pt thermocouples, both domestically and internationally, in order to provide a foundation for future improvement.

Analysis of Multi-Channel Virtual Temperature Measurement System Hardware Design and its Uncertainty

2012 ◽  
Vol 220-223 ◽  
pp. 1423-1426
Author(s):  
Ke Qin Liu ◽  
Xue Tao Pan ◽  
Jian Wen Cai
Keyword(s):  
Temperature Measurement ◽  
Measurement System ◽  
Virtual Instrument ◽  
Measurement Range ◽  
Platinum Resistance ◽  
Total Uncertainty ◽  
Technical Parameters ◽  
Calculation Results ◽  
Virtual Temperature ◽  
Temperature Measurement System

According to a number of issues in the traditional temperature measurement, the multi-channel temperature measurement system based on virtual instrument is developed. In terms of measurement range and accuracy, Integrated Temperature Sensor TMP36, platinum resistance Pt100, and K-type thermocouple are selected to achieve multi-point temperature measurement, signal conditioning circuit is designed to match with every sensor. On this basis, combined with the technical parameters of each component, by means of the theory of uncertainty, analysis of the total uncertainty of system has been made. The calculation results show that the selection of each component for the temperature measurement system is reasonable, which can completely meet the measurement requirements.

Control of the optical Kerr effect in chirped-pulse-amplification systems using model-based phase shaping

2009 ◽  
Vol 34 (24) ◽  
pp. 3788 ◽  
Author(s):  
D. N. Schimpf ◽  
E. Seise ◽  
T. Eidam ◽  
J. Limpert ◽  
A. Tünnermann
Keyword(s):  
Kerr Effect ◽  
Optical Kerr Effect ◽  
Chirped Pulse ◽  
Pulse Amplification ◽  
Model Based ◽  
Chirped Pulse Amplification

scholarly journals Doubled temperature measurement range for a single micro-ring sensor

2014 ◽  
Vol 63 (15) ◽  
pp. 154209
Author(s):  
Li Xin ◽  
Wang Lu-Na ◽  
Guo Shi-Liang ◽  
Li Zhi-Quan ◽  
Yang Ming
Keyword(s):  
Temperature Measurement ◽  
Measurement Range

Wireless Temperature Measurement and Alarm Device Based on Single Bus Digital Temperature Sensor

2011 ◽  
Vol 135-136 ◽  
pp. 1129-1133 ◽  
Author(s):  
Li Mei Dong
Keyword(s):  
Ambient Temperature ◽  
Temperature Measurement ◽  
Temperature Sensor ◽  
Measurement Accuracy ◽  
Measurement Range ◽  
Alarm System ◽  
Measurement Circuit ◽  
Temperature Detection ◽  
Alarm Limit ◽  
Digital Temperature Sensor

AT89S52 microcontroller was the center controler for wireless temperature measurement and alarm system, through temperature measurement circuit and remote wireless alarm circuit, realized the temperature detection and off-limit alarm of the ambient temperature. The system was composed of temperature acquisition circuit, display circuit and alarm circuit. Temperature sensor was DS18B20, real-time temperature displayed via LED displayer. Users can customize the alarm lower limit and superior limit. when the ambient temperature exceeds the alarm limit, the microcontroller will start the sound and light alarm, and remote wireless alarm. Temperature measurement range from -40 °C to +85 °C, measurement accuracy is 0.5 °C, wireless alarm distance is up to 100 meters. This system is of high precision, wide temperature measurement, and timely alarm.

scholarly journals Evolution of ERS Equipment of the MSU-MR Series as Related to Increasing the Accuracy of Radiometric Measurements and Expanding Performance Capabilities

2020 ◽  
Vol 7 (4) ◽  
pp. 63-73
Author(s):  
K. V. Badayev ◽  
◽  
Yu. M. Gektin ◽  
Yu. Yu. Gulin ◽  
A. A. Zaytsev ◽  
...  
Keyword(s):  
Temperature Measurement ◽  
Black Body ◽  
Cooling Capacity ◽  
Measurement Range ◽  
Metrological Characteristics ◽  
Signal Generation ◽  
Flight Tests ◽  
Development Team ◽  
New Ideas ◽  
Electronic Signal

This work is devoted to the description of the technical evolution of the MSU-MR equipment installed on Meteor-3M series spacecraft. After the launch of each successive spacecraft of the series, the development team generates new ideas concerning the modernization of the MSU-MR equipment in order to improve its metrological characteristics. This work describes in detail both the improvements of the MSU-MR equipment already tested during flight tests (expansion of the temperature measurement range, remote adjustment of the parameters of electronic signal generation paths and of the temperatures of black body simulators, refinement of the method of laboratory focusing) and of the equipment yet to be subject to flight tests (remote focusing, increasing the cooling capacity of the radiator of the black body simulator, as well as a number of others).

CCD Temperature Measurement System Design Based on Truncated Mean Weighed Algorithm

2015 ◽  
Vol 738-739 ◽  
pp. 746-750
Author(s):  
Fei Xue ◽  
Fu Tao Dong
Keyword(s):  
High Temperature ◽  
System Design ◽  
Temperature Measurement ◽  
Measurement System ◽  
Processing Speed ◽  
Measurement Range ◽  
Charge Coupled Device ◽  
High Temperature Measurement ◽  
Light Filters ◽  
Temperature Measurement System

In order to improve the accuracy, range and instantaneity of high temperature measurement, a CCD (Charge Coupled Device) image temperature measurement system was designed based on multi-sensor truncated mean weighed fusion. Firstly, CCD temperature measurement range was expanded by 6 light filters. Then 15 colorimetric-sensors calculated the surface temperature of experimental molten pool. Finally, the more accurate fusion estimate of temperature value was acquired by using truncated mean weighted factors. The experiment results demonstrate that system have faster processing speed in the measurement of 800°C. The errors were kept within ±2%. This method is effective in improvement of system accuracy and instantaneity.

A scanning filtering method for improving the SNR of chirped pulse based on the optical Kerr effect

Optik ◽  
2013 ◽  
Vol 124 (24) ◽  
pp. 6958-6962
Author(s):  
Rong Ye ◽  
Bin Zhang ◽  
Bing Zeng ◽  
Zairu Ma ◽  
Nianchun Sun ◽  
...  
Keyword(s):  
Kerr Effect ◽  
Optical Kerr Effect ◽  
Chirped Pulse ◽  
Filtering Method
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