MY161377A - Portable sensor for electrical capacitance tomography - Google Patents
Portable sensor for electrical capacitance tomographyInfo
- Publication number
- MY161377A MY161377A MYPI20082104A MYPI20082104A MY161377A MY 161377 A MY161377 A MY 161377A MY PI20082104 A MYPI20082104 A MY PI20082104A MY PI20082104 A MYPI20082104 A MY PI20082104A MY 161377 A MY161377 A MY 161377A
- Authority
- MY
- Malaysia
- Prior art keywords
- signal
- electrode sensor
- conditioning system
- capacitance tomography
- signal conditioning
- Prior art date
Links
Landscapes
- Measurement Of Radiation (AREA)
Abstract
AN ELECTRONIC CAPACITANCE TOMOGRAPHY SYSTEM IS ABLE TO OBTAIN INFORMATION ABOUT THE CONTENTS OF VESSELS, BASED ON MEASURING VARIATIONS IN THE DIELECTRIC PROPERTIES OF THE FLOWING MATERIAL INSIDE THE VESSEL. AN ELECTRONIC CAPACITANCE TOMOGRAPHY SYSTEM WORKS BY PLACING TWO ADJACENT CONDUCTORS ACROSS THE PIPE OR VESSEL TO BE EXAMINED; EFFECTIVELY CREATING A CAPACITOR. DIFFERENT DIELECTRIC PROPERTIES BETWEEN THE CONDUCTORS WILL CREATE DIFFERENT CAPACITOR VALUES. ACCORDINGLY, THE PRESENT INVENTION PROVIDES A SIGNAL CONDITIONING SYSTEM FOR ELECTRICAL CAPACITANCE TOMOGRAPHY, THE SIGNAL CONDITIONING SYSTEM (100) INCLUDES: AN ELECTRODE SENSOR (104); SIGNAL SWITCHING CIRCUIT WHICH IS CONTROLLED BY A SWITCHING CIRCUIT THAT IS FORMED BY CMOS ANALOG SWITCHES AND A MICROCONTROLLER CONTROLLER UNIT (110) THAT CONTROLS IT; A SIGNAL DETECTION AND AMPLIFIER CIRCUIT (120); A PROGRAMMABLE GAIN AMPLIFIER (PGA) WHICH IS USED TO AMPLIFY THE SIGNAL RECEIVED WITH A CONTROLLABLE GAIN, SUCH THAT THE MICROCONTROLLER CONTROL UNIT (110) SYNCHRONISES ALL THE OPERATIONS IN SIGNAL CONDITIONING SYSTEM (100) BY INTERFACING WITH CENTRAL CONTROL UNIT (101), SWITCHING ELECTRODE SENSOR (104) EITHER ACT AS SOURCE OR RECEIVER, CONTROLLING IC LIKE PROGRAMMABLE GAIN AMPLIFIER AND ANALOGUE TO DIGITAL CONVERTER (130)] CHARACTERIZED IN THAT, THE ELECTRODE SENSOR (104) IS BUILT FROM CONDUCTIVE PLATES WHICH ACTS AS A SENSING SURFACE THAT HAS DIRECT CONTACT TO MEASURING AREA, WHEREIN SAID ELECTRODE SENSOR (104) CAN BE BUILT UP FROM 8, 12, 16 OR MORE ELECTRODES MOUNTED SYMMETRICALLY INSIDE OR OUTSIDE AN INSULATION PIPE (200); WHEREIN AN ACTIVE LOW PASS FILTER (300) IS INTEGRATED INTO AN ABSOLUTE VALUE CIRCUIT (400), SUCH THAT RIPPLE SIGNAL IS FLATTENED AND RECTIFIED USING A CAPACITOR TO ELIMINATE NOISE FROM THE SIGNAL BEFORE FURTHER PROCESSING; AND WHEREIN THE ELECTRODE SENSOR (104) IS PLUGGABLE DIRECTLY ONTO A PLURALITY OF PRINTED CIRCUIT BOARD (PCB) SOCKETS OF THE SIGNAL CONDITIONING SYSTEM (100),
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MYPI20082104A MY161377A (en) | 2008-06-13 | 2008-06-13 | Portable sensor for electrical capacitance tomography |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MYPI20082104A MY161377A (en) | 2008-06-13 | 2008-06-13 | Portable sensor for electrical capacitance tomography |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| MY161377A true MY161377A (en) | 2017-04-14 |
Family
ID=59562716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MYPI20082104A MY161377A (en) | 2008-06-13 | 2008-06-13 | Portable sensor for electrical capacitance tomography |
Country Status (1)
| Country | Link |
|---|---|
| MY (1) | MY161377A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108195896A (en) * | 2017-12-05 | 2018-06-22 | 浙江大学 | A kind of staggered electrode formula capacitance chromatography imaging device applied to cryogen |
-
2008
- 2008-06-13 MY MYPI20082104A patent/MY161377A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108195896A (en) * | 2017-12-05 | 2018-06-22 | 浙江大学 | A kind of staggered electrode formula capacitance chromatography imaging device applied to cryogen |
| CN108195896B (en) * | 2017-12-05 | 2020-07-03 | 浙江大学 | Staggered electrode type capacitance tomography device applied to low-temperature fluid |
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