scholarly journals CONTACTLESS MEASURING OF TEMPERATURE WITH DIFFERENTIAL PHOTO RECEIVER

2019 ◽  
Vol 3 ◽  
pp. 101 ◽  
Author(s):  
Tsanko Karadzhov ◽  
Dimcho Pulov ◽  
Nikolay Angelov
Keyword(s):  
Temperature Measurement ◽  
Spectral Sensitivity ◽  
Optical System ◽  
Microprocessor System ◽  
Single Chip ◽  
Photo Receiver

A method for contactless temperature measurement has been created with two photo receivers with different spectral sensitivity. An algorithm for processing the signals from both receivers of a single-chip microprocessor system has been developed. An optical system for the LWIR diapason of the spectrum is proposed.

Design of Temperature Control System in Incubator

2013 ◽  
Vol 397-400 ◽  
pp. 1317-1320 ◽  
Author(s):  
Shu Wang Chen
Keyword(s):  
Temperature Measurement ◽  
Real Time ◽  
Control Word ◽  
Digital Data ◽  
Temperature Control System ◽  
Measure Data ◽  
Main Function ◽  
Single Chip ◽  
The Real ◽  
Point Measurement

To realize the real-time temperature measure and control rapidly and accurately in the incubator, a temperature measurement, control and display system is designed in the paper by using of the smart temperature sensor DS18B20 and the microcontroller AT89S52. The output mode of DS18B20 is serial in one-way, and its main function is to transform the temperature into the digital data and store the control word of the output conversion accuracy, which is available for data processing of single-chip microcomputer. In the actual temperature measurement it doesnt require any extra components including backup power supply, and the user can also choose the resolution. It is easy to realize multi-point measurement, connect and extend the real-time measure data. The system circuit can be applied to any field which needs multi-point measurement and real-time detection.

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.

scholarly journals MICROPROCESSOR SYSTEM FOR TEMPERATURE INVESTIGATION OF AC MACHINES

2021 ◽  
Vol 3 ◽  
pp. 110-115
Author(s):  
Totyo Iliev ◽  
Tsanko Karadzhov
Keyword(s):  
Differential Equations ◽  
Temperature Measurement ◽  
Electric Machines ◽  
Microprocessor System ◽  
Ac Machines ◽  
Relative Ease ◽  
Graphic Form ◽  
System A ◽  
Machine Parts ◽  
Mathcad Software

The paper is about four channel microprocessor system for temperature measurement during static and running mode. It incorporates microcontroller type PIC18F452 and employs sensors which convert temperature into voltage. In addition it features optional connection to a PC for storing and processing amassed data. Based on this system a new method is proposed for analysing overheating and cooling of individual parts of asynchronous electric machines. A set of differential equations is derived which later on are processed by MATHCAD software. Obtained results can be presented in tabular or graphic form. The outcome of resolving this task is in the relative ease with which it is possible to establish overheat of various machine parts. Similarly, such approach could be applied with other types of electric machines.

Design of Ultrasonic Gas Temperature Measurement System with Humidity Self-Correction

2011 ◽  
Vol 383-390 ◽  
pp. 5166-5170
Author(s):  
Ming Lin Yao ◽  
Yu Jun Guan ◽  
Cui Ying Dong
Keyword(s):  
Temperature Measurement ◽  
Measurement System ◽  
Low Cost ◽  
Ultrasonic Transducer ◽  
Water Vapor Pressure ◽  
Propagation Speed ◽  
Gas Temperature ◽  
Single Chip ◽  
Pressure Meter ◽  
Temperature Measurement System

In the ultrasonic gas temperature measurement system, the principle is that the velocity of sound in gas is a function of temperature. But because the propagation speed of ultrasonic wave can be easily affected by humidity, the accuracy of the gas temperature measurement will be affected too. This dissertation will implement the ultrasonic gas temperature measurement system with humidity correction suitable for all kinds of environment humidity. This type of ultrasonic technique is a highly efficient algorithm with the advantages of both time-of-flight method and phase shift method. And the system is realized with a single-chip microcomputer-based with a relative humidity/water vapor pressure meter. The main advantages of this ultrasonic temperature measurement system are high resolution, using narrow-bandwidth ultrasonic transducer of low cost and ease of implementation.

An On-Line Monitoring System of Temperature Field in Tire

2013 ◽  
Vol 300-301 ◽  
pp. 551-555
Author(s):  
Deng Chao Li ◽  
Jian Hua Wang ◽  
Yong Sheng Yang
Keyword(s):  
Temperature Field ◽  
Temperature Measurement ◽  
Monitoring System ◽  
Computer Software ◽  
Difficult Problem ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
On Line ◽  
Upper Computer ◽  
And Storage

The internal high temperature of tire not only reduces the service life of the tire, but also increases fuel consumption. An on-line monitoring system of temperature field in tire is designed. The temperature measurement module of lower computer is made up of temperature measurement network of thermocouple, single chip microcomputer and other modules. The upper computer software is designed under the environment of VC ++, making use of the serial port to realize communication. The functions such as temperature collection, analysis, display and storage capabilities were realized. The system has the advantages of convenient use, reliable operation, solving the difficult problem of obtaining tire actual temperature.

scholarly journals TEMPERATURE MEASUREMENT WITH PHOTODIODE IN DIFFERENT OPERATING MODES

2021 ◽  
Vol 3 ◽  
pp. 291-295
Author(s):  
Dimcho Pulov ◽  
Tsanko Karadzhov
Keyword(s):  
Temperature Measurement ◽  
Spectral Sensitivity ◽  
Periodic Change ◽  
Reverse Voltage ◽  
Operating Modes

A method for contactless temperature measurement with photodetectors in different operating modes has been developed. It is based on the periodic change of the spectral sensitivity of the photodiode depending on the applied reverse voltage. This is accomplished by switching the photodiode within one measurement from photovoltaic to photoconductive  mode. For this purpose, the scheme of the respective electronic key has been developed. 

Multi-Channel Temperature Detecting System Based on AT89S52

2013 ◽  
Vol 303-306 ◽  
pp. 382-385
Author(s):  
Shou Bin Wang ◽  
Wei Gong ◽  
Gang Su ◽  
Hong Yue Sun
Keyword(s):  
Temperature Measurement ◽  
Detection System ◽  
Low Cost ◽  
Practical Significance ◽  
Single Chip ◽  
Temperature Detection ◽  
Channel Temperature ◽  
Temperature Measurement System ◽  
Temperature Measure ◽  
Hardware Circuit

There arc many occasions we need to test its temperature in real time. This design is mainly studied the establishment and application of multi-channel temperature measurement system. In this paper, the authors introduce a multi-channel temperature detecting system which has a core of single-chip controller. The system measures the temperature by the temperature sensor, displays the temperature and deals with it on real time.The temperature detection system hardware circuit is simple, low cost, convenient temperature measurement, high measuring precision, and has better use value. The system is suitable for common occasions of multi-channel temperature measure, has great potential for development and practical significance．

Multi Point Temperature Measurement System Based on DS18B20

2013 ◽  
Vol 756-759 ◽  
pp. 556-559 ◽  
Author(s):  
Zhi Jun Liu
Keyword(s):  
Temperature Measurement ◽  
Measurement System ◽  
System Development ◽  
Single Chip ◽  
Point Temperature ◽  
Development Platform ◽  
Multiple Sensors ◽  
Design Program ◽  
Actual Operation ◽  
Temperature Measurement System

In this design, AT89C51 microcontroller is as the core ; KEIL is as the system development platform; The C51 language is used to design program. Multi-point temperature measurement system is designed with the DS18B20 intelligent temperature sensor. Under the Proteus platform simulation, the data results of the system actual operation is analyzed.This design did not use DS18B20's usual 1-wire bus structure, but use the parallel port of 51 single-chip computer. At the same time the temperature of 4 DS18B20 sensors are fast read. Therefore,it realized rapid accurate recognition and processingin in multi-point temperature measurement system of multiple sensors,and this kind of distributed temperature measurement system interface is simple, high precision, strong anti-jamming ability , stable work etc..

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