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< Automation and control techniques - Control loops, advanced control, S95 and S88 Industrial networking - Basics, protocols, field buses, control buses, ethernet networking > You are here : Home > Resources > For control engineers > Instrumentation

Instrumentation, measurement, sensors ...

Concepts | Technologies | Datas exchange interfaces

In this rubric, you will find basic informations for a control engineer, about instrumentation, sensors, data acquisition and measure processing, technologies ...


 See also : Instrumentation & Measurement buses | Control & control loops

General informations, fundamental concepts

National Instruments™ | Michel Hubin | Documentation

 
General informations

Fundamentals in measurement, instrumentation, sensors, data acquisition ...
 

Michel Hubin is a former scientific in CNRS. He presents here a (very) complete and useful course about measurement, sensors, data acquisition, signal conditionning, data processing ... (Which represents more than 580 pages)

The 3000 pages and more of this site have been written in french "only". For this reason it is a shame if you do not understand french writing, because it is very dificult to find such a complete and interesting site published in english (in other words, until now I have not been able to find such one, excepted the National Instrument's web site with a different style).

According to the interest of this site, these links (in this section and below) stay in this page just for the benefit of the eventual visitors who can read french enough.


 

NOTE : For your first visit on the Michel Hubin's web site

While you are first visiting the Michel Hubin's web site, the author wishes (hardly !) that you read attentively the introduction at the top of the home page , then the "browsing", "motivation" & "emailing" sections, before accessing to the various rubrics, in the purpose of "not to avoid the essential".

 

  See also the following rubric : Sensors technologies


Michel Hubin proposes also an impressive base of over 780 pages about physics and electronics fundamental, including boolean and sequential logic, signal transmission, signal treatment, optic fibers, electrotechnic ...

 
 

Measurement & sensors technologies

National Instrument™ | Sensorland | Michel Hubin | Flow measurement | Level measurement | RFID | Temperatures

 

 

"The online information centre for sensing and measurement"

 

This site is french written "only" - for further explanation, please see this note above.

If you are first visiting the Michel Hubin's web site, please see this note above.

Physical measurement sensors

Chemical and gas sensors

Multi-medias sensors

 

Flow measurement technologies

Flow measurement (generalities) | Ultrasonics flow measurement

Flow measurement - Generalities

 

Ultrasonic flow measurement technology

The KROHNE company provides a very interesting didactic document about the ultrasonic flow measurement for industrial applications (PDF).


Its designer - the doctor Friedrich HOFMANN - tackles here the following :

  • The acoustic properties of liquids and gases.
  • The ultrasonic Doppler flowmeters basic technology.
  • The principles of the ultrasonic flowmeters operating by the transit time method.
  • The presentation of the different types of ultrasonic flowmeters operating by this technology.

www.krohne.com/html/dlc/BR_ULTRASONIC_en_72.pdf
 

Level measurement / level gauging technologies

Radar technology for level gauging

Radar technology for level gauging

In a very detailed didactic document, the Krohne company presents the technical basis of the radar technology for level measurement (PDF).


Doctor Detlef BRUMBI - its designer - tackles here the following items :

  • An introduction to the radar systems.
  • The microwaves main features and their fields of application.
  • The different kinds of radar level measurement systems.
  • The components used for radar systems.
  • The various types of antennas.
  • The waves propagation and how they reflect.
  • The various methods to evaluate the measuring signal.

www.krohne.com/html/dlc/BR_LEVELRADAR_en_72.pdf
 

RFID - Radio frequency identification

RFID Handbookwww.palowireless.comRFID exchange | AIMRFID journalRFID forumsOther RFID resources |

The RFID (Radio Frequency IDentification) technology is used for tens of years in the industry.

Nevertheless, it is told more and more in public about the RFID technology as new.
Why ? How does RFID technology work ? Is the RFID technology replacing bar codes ?
What about the news, what about the trends and what are the stakes ?

 See also : Wireless communications & wireless networks
 
 
 
 
 
 
 
 

Temperatures measurement

  See also in this page : National Intrument™ | Michel Hubin

 
 

Datas exchange interfaces

FDT | Pactware

 

FDT is a standard interface to exchange datas between measuring devices, communication channels and systems.

The equipment manufacturer provides a "device DTM" - a file which describes the equipment - which is aproximately a software driver allowing a "FDT application" to exchange datas through a communication network.

(For instance, the application could be a software used to setup an instrumentation device or / a software used to get diagnostic datas such as Pactware. This application must be FDT compliant to recognize the datas exchanged. The fieldbus manufacturer must provide a "communication DTM" which describes the protocol, the datas structure and how to exchange the datas.)

The main advantage to use a standard interface is to let the user free to choose the devices he wants, that is measuring devices, communication interfaces and the system to use. Thus, the user is independant according to the suppliers.


You can get more information here :

 

PACTWARE is a software used to setup field measuring devices and to get diagnostic datas from them. It is manufacturer independant and FDT technology compliant, thus it can work with various devices and fieldbuses used in instrumentation through the "device DTM" and the "communication DTM" provided by the suppliers.

 
 

Last updated : June 3rd, 2010.

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