Temperature Measurements for Transmission Lines Based on Passive Optical Sensing

2014 ◽  
Vol 543-547 ◽  
pp. 1035-1041 ◽  
Author(s):  
Song Xiang Liu ◽  
Wei Xiao ◽  
Hong Bo Chen ◽  
Huan Bai ◽  
Yun Feng ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Temperature Measurement ◽  
Real Time ◽  
High Voltage ◽  
Measurement System ◽  
Transmission Lines ◽  
Optical Sensing ◽  
Temperature Changes ◽  
Fbg Sensors ◽  
Temperature Measurement System

In order to achieve real-time monitoring of high-voltage lines, a temperature measurement system for transmission lines based on the online passive FBG sensors is proposed. The temperature linearity of the FBG sensors designed by bi-metal package is greater than 0.999, which guarantees great mechanical strength and temperature measurement performance. The sensors are fixed to the lines by a specially designed fixture. This temperature measurement system for transmission lines based on optical sensing is running on 110kV line with strong scalability, which could monitor temperature changes of the conductor in real time.

Design of Temperature Measurement System Based on Microcontroller

2014 ◽  
Vol 513-517 ◽  
pp. 4039-4042
Author(s):  
Cao Rui ◽  
Kong Jun Bao
Keyword(s):  
Temperature Measurement ◽  
Real Time ◽  
Measurement System ◽  
Low Cost ◽  
Digital Signal ◽  
Single Chip ◽  
Display Function ◽  
Stable Performance ◽  
Temperature Measurement System ◽  
Digital Temperature Sensor

This temperature measurement system is based on the control of AT89S52 single chip microcontroller, with temperature display function. Temperature information is changed into digital signal directly by a single bus digital temperature sensor DS18B20, and the digital signal is sent into microcontroller for real-time acquisition. The results are displayed through LCD module 1602 in real time. The system is with the characteristics of low cost, high precision, stable performance and convenient operation. The system can be extended to multi-point temperature detecting system easily, and adding temperature transfinite alarm function.

Design of Wireless Temperature Measurement System for High Voltage Electrical Equipment

2012 ◽  
Vol 591-593 ◽  
pp. 1502-1505
Author(s):  
Xiang Hong Cao ◽  
Chao Yang ◽  
Hua Zhang
Keyword(s):  
Temperature Measurement ◽  
High Voltage ◽  
Measurement System ◽  
Power Supply ◽  
System Analysis ◽  
Electrical Equipment ◽  
Temperature Data ◽  
Working Environment ◽  
Reliable Power Supply ◽  
Temperature Measurement System

There are many limits in the traditional temperature measurement methods' for high voltage electrical equipment. A wireless temperature measurement system based on C8051F340 for high voltage electrical equipment has been designed, which transfers temperature data by wireless communication, and optimizes the system's power supply for the high voltage electrical equipment's working environment. The host computer of the system analysis the temperature data from wireless sensor and can prevent the equipment's overheat accidents in effect. According to the experiment board's practical operating, this system measures temperature accurately, transfers data stably, operates with a reliable power supply and can meet the practical requirements.

Colorimetric Temperature Measurement Algorithm Based on Multi-Sensor Data Fusion

2014 ◽  
Vol 530-531 ◽  
pp. 146-150
Author(s):  
Fan Wei Meng ◽  
Qing Tian ◽  
You Liang Yang
Keyword(s):  
Standard Deviation ◽  
Temperature Measurement ◽  
Real Time ◽  
Measurement System ◽  
Measurement Accuracy ◽  
Image Sensor ◽  
Sensor Data ◽  
The Real ◽  
Measurement Algorithm ◽  
Temperature Measurement System

Wavelength and other factors have a deep influence on temperature measurement system based on CCD image sensor. Deviations between measurement values sometimes are large. In order to reduce error, the temperature outputs in different wavelength combinations do have multi-sensor correlation properties in point of colorimetric temperature measurement system view. The colorimetric temperature measurement algorithm based on real-time adaptive weighted is put forward by such performance index that minimum of standard deviation. According to measured value of each sensor, we will find out the corresponding weights in adaptive manner. And discuss the statistical properties of the estimated standard deviation. Estimation unbiasedness is proved. The algorithm has the following advantages .A much smaller amount of calculation, without any a priori knowledge, only relying on the output of each sensor. All of these make temperature estimation be optimal, measurement accuracy and the real-time performance of the system are improved. Theoretical analysis and experimental results show that the colorimetric temperature measurement algorithm based on the real-time adaptive weighted improves obviously when comparing with the traditional means algorithm in measurement accuracy.

Desing of Real-Time Temperature Measurement System Based on Semiconductor Laser Diode

2014 ◽  
Vol 687-691 ◽  
pp. 886-889
Author(s):  
Zhong Shu Yang
Keyword(s):  
Temperature Measurement ◽  
Real Time ◽  
Laser Diode ◽  
Measurement System ◽  
Measurement Accuracy ◽  
Semiconductor Laser Diode ◽  
Large Size ◽  
Controlling System ◽  
Airplane Engine ◽  
Temperature Measurement System

Thermoelectric couple was employed in traditional airplane engine temperature measurement system with the disadvantages of large size,heavy weight,big error and slow response.This paper presents a new kind of real—time temperature measurement system using laser diode InGaAs/I as light source,and using pyroelectric detector LiTa03 as optical receiving unit and using a microprocessor as signal processing center.This instrument consists of three parts:optical emitting and receiving system,signal amplifying and controlling system,and display system。The principle and structure of the system are introduced.Experimental results of airplane engine real—time temperature measurement show that temperature measurement accuracy and response time conform to our requirement in the range of 300°C一800°Cand agree with prediction of theory.All these prove that the design is correct.

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