Multichannel capacitance tomograph for dynamic process imaging

• Autorzy: Brzeski P. , Mirkowski J. , Olszewski T. , Pląskowski A. , Smolik W. , Szabatin R.
• Konferencja: The Fourth Scientific Symposium on Image Processing Technology. TPO 2002 ; (21.11-23.11.2002 ; Serock, Poland)
• Języki publikacji: EN

Abstrakty

EN

The Division of Nuclear and Medical Electronics of Warsaw University of Technology is an institution where a capacitance process tomograph was first designed in Poland. The design of this capacitance tomograph, its performance and first results are presented in the paper. The tomograph can operate with one or two probes with up to 32 electrodes altogether. Twelve or sixteen electrode configurations is commonly used and a two times twelve or two times sixtheen electrode set up is provided for flowmeter applications. Additionally, the device has functionality of a 16-channel capacitance meter for industrial applications. The tomograph has a novel modular structure. It consists of 16 analogue signal cards, a motherboard and a control module with an analogue to digital converter. The measurement is based on a standard charge-discharge method. The signal card is capable to work both as a transmitter and a receiver during the measurement process. The motherboard provides communication between signal cards and the control module using a custom digital bus. The control module contains a 16-bit analogue to digital converter, a control logic, and a serial communication interface. All digital electronic circuits have been designed using programmable logic devices (PLDs).

Słowa kluczowe

EN

capacitance measurement; capacitance tomography; measurement system

• Wydawca: Stowarzyszenie Elektryków Polskich ; Polska Akademia Nauk ; Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Opto-Electronics Review
• Rocznik: 2003
• Tom: Vol. 11, No. 3
• Strony: 175--180
• Opis fizyczny: Bibliogr. 4 poz., fot., rys., wykr.

Twórcy

autor

Brzeski P.

• Warsaw University of Technology, Division of Nuclear and Medical Electronics, 15/19 Nowowiejska Str., 00-665 Warsaw, Poland

autor

Mirkowski J.

• Warsaw University of Technology, Division of Nuclear and Medical Electronics, 15/19 Nowowiejska Str., 00-665 Warsaw, Poland

autor

Olszewski T.

• Warsaw University of Technology, Division of Nuclear and Medical Electronics, 15/19 Nowowiejska Str., 00-665 Warsaw, Poland

autor

Pląskowski A.

• Industrial Institute of Organie Chemistry, 6 Annopol Str., 03-236 Warsaw, Poland

autor

Smolik W.

• Warsaw University of Technology, Division of Nuclear and Medical Electronics, 15/19 Nowowiejska Str., 00-665 Warsaw, Poland

autor

Szabatin R.

• Warsaw University of Technology, Division of Nuclear and Medical Electronics, 15/19 Nowowiejska Str., 00-665 Warsaw, Poland

Bibliografia

• 1. P. Brzeski, "Tomographic techniques and image processing for process tomography. Research activities", Proc. Symp. Process Tomography, Jurata, May 18-19, 2000.
• 2. T. Olszewski, "Capacitance tomograph - design and preliminary results", Proc. 2 nd Int. Symp. on Process Tomography in Poland, Wrocław, pp. 159-168 (2002).
• 3. W.Q. Yang, "Hardware design of electrical capacitance tomography systems", Meas. Sci. Technol. 7, 225-232 (1996).
• 4. N. Reinecke and D. Mewes, "Recent developments and industrial/research applications of capacitance tomography", Meas. Sci. Technol. 7, 233-246 (1996).