CN204855437U - Plane electrical capacitance tomography sensor - Google Patents
Plane electrical capacitance tomography sensor Download PDFInfo
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- CN204855437U CN204855437U CN201520420776.9U CN201520420776U CN204855437U CN 204855437 U CN204855437 U CN 204855437U CN 201520420776 U CN201520420776 U CN 201520420776U CN 204855437 U CN204855437 U CN 204855437U
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Abstract
The utility model relates to a plane electrical capacitance tomography sensor, its structure includes exciting electrode, interelectrode electrode, measuring electrode, surround electrode, bottom electrode, insulation substrate, printed circuit board, insulation protective layer. Insulation protective layer covers printed circuit board's upper surface completely, reduces the interference of outside noise signal to measuring result, printed circuit board is by the exciting electrode, the interelectrode electrode, measuring electrode, the surround electrode, bottom electrode and insulation substrate constitute, total 36 total exciting electrodes and measuring electrode on it, exciting electrode and measuring electrode's shape all is the square, and evenly distributed is on insulation substrate's coplanar, this kind of distribution form can realize the detection to plane combined material, and make the signal intensity of sensor, investigation depth and detection sensitivity have apparent improvement, interelectrode electrode distributed is between exciting electrode and measuring electrode, reduce the mutual interference between the electrode, the formation of image performance of electrical capacitance tomography system has been improved.
Description
Technical field
The utility model belongs to capacitance chromatography imaging field, relates to a kind of sensor, particularly a kind of plane capacitance tomography sensor.
Background technology
The principle of electrical capacitance tomography can be described as: different media has different specific inductive capacity, if two kinds of materials with differing dielectric constant mix, when each material composition concentration and distribution thereof change, the change of mixture dielectric constant can be caused.Thus make it measure capacitance to change, the size of capacitance reflects size and the distribution situation of each concentration of component of potpourri. thereupon
Electrical capacitance tomography not only has the non-intruding of process tomographic imaging technology, the advantage such as visual, there is again the features such as cost is low, image taking speed is fast simultaneously, it is made to be widely used in measuring characteristic that is unknown or known materials, comprise the permittivity of unknown material, the thickness of known materials and known fluid or gas are carried out to non-cpntact measurement and realized image viewing.
Current electrical capacitance tomography is applied to field of non destructive testing, but the measurement be only confined to tubular composite material, do not relate to the measurement to plane composite material, existing capacitance tomography sensor is all 8 electrodes or 12 electrodes substantially, the shape of electrode is all rectangle, and rectangular length breadth ratio is greater than 4, this just makes capacitance tomography sensor ubiquity difference in signal strength, sensitivity is low, the problem that penetration depth is little, exciting electrode and potential electrode are directly exposed in air, external noise signals is made to produce larger interference to measurement result, and exciting electrode and potential electrode are directly distributed on insulated substrate, cause the mutual interference between electrode, be unfavorable for the capacitance exactly between potential electrode, owing to there is no guarded electrode, electric field is revealed more serious, reduce the edge effect of electric field, make the hydraulic performance decline of capacitance tomography sensor.
Summary of the invention
The utility model is intended to solve the problem, and provide a kind of plane capacitance tomography sensor, its technical scheme adopted is as follows:
A kind of plane capacitance tomography sensor, comprises exciting electrode, interpolar electrode, potential electrode, surround electrode, bottom electrode, insulated substrate, printed circuit board (PCB), insulating protective layer; Insulating protective layer covers the upper surface of printed circuit board (PCB) completely; printed circuit board (PCB) is made up of exciting electrode, interpolar electrode, potential electrode, surround electrode, bottom electrode and insulated substrate; printed circuit board (PCB) always has 36 exciting electrodes and potential electrode; the shape of exciting electrode and potential electrode is all square; and be evenly distributed on the same plane of insulated substrate; there is interpolar electrode between exciting electrode and potential electrode, surround electrode, bottom electrode are etched in surrounding and the bottom of insulated substrate respectively.
The beneficial effects of the utility model:
Printed circuit board (PCB) of the present utility model is made up of exciting electrode, interpolar electrode, potential electrode, surround electrode, bottom electrode and insulated substrate, exciting electrode and potential electrode always have 36, it is no longer 8 or 12, improve the imaging resolution of sensor, and exciting electrode and potential electrode are etched on the same plane of insulated substrate, change the form of traditional capacitance tomography sensor, drive electrode and potential electrode no longer annular spread, on insulated substrate, achieve the measurement to plane composite material.
The shape of exciting electrode of the present utility model and potential electrode is all square, and compared with the rectangle equal with the total area, the exciting electrode of this shape and potential electrode can improve the detection sensitivity of sensor, investigation depth and signal intensity effectively.
Printed circuit board (PCB) of the present utility model is covered completely by insulating protective layer, effectively can reduce the interference of external noise signals to measuring-signal, improves the detection sensitivity of sensor.
There is interpolar electrode between exciting electrode of the present utility model and potential electrode, reduce the mutual interference between electrode.
Surround electrode of the present utility model, bottom electrode are etched in surrounding and the bottom of insulated substrate respectively, decrease the leakage of internal electric field, play certain shielding action again to external noise signals simultaneously.
Accompanying drawing explanation
Fig. 1: structural representation of the present utility model;
Fig. 2: the structural representation of printed circuit board (PCB);
Figure number illustrates: 1, exciting electrode 2, interpolar electrode 3, potential electrode 4, surround electrode 5, bottom electrode 6, insulated substrate 7, printed circuit board (PCB) 8, insulating protective layer.
Embodiment
Below in conjunction with accompanying drawing and instantiation, the utility model is described in further detail:
A kind of plane capacitance tomography sensor as shown in Figure 1, comprises exciting electrode (1), interpolar electrode (2), potential electrode (3), surround electrode (4), bottom electrode (5), insulated substrate (6), printed circuit board (PCB) (7), insulating protective layer (8); Insulating protective layer (8) covers the upper surface of printed circuit board (PCB) (7) completely.
Printed circuit board (PCB) as shown in Figure 2, comprises exciting electrode (1), interpolar electrode (2), potential electrode (3), surround electrode (4), bottom electrode (5), insulated substrate (6); It always has 36 exciting electrodes (1) and potential electrode (3), the shape of exciting electrode (1) and potential electrode (3) is all square, and be evenly distributed on the same plane of insulated substrate (6), there is interpolar electrode (2) between exciting electrode (1) and potential electrode (3), surround electrode (4), bottom electrode (5) are etched in surrounding and the bottom of insulated substrate (6) respectively.
The above, be only a kind of embodiment of the present invention, not deliberately for limiting protection scope of the present invention.
Claims (2)
1. a plane capacitance tomography sensor, its structure comprises: exciting electrode (1), interpolar electrode (2), potential electrode (3), surround electrode (4), bottom electrode (5), insulated substrate (6), printed circuit board (PCB) (7) and insulating protective layer (8); Exciting electrode (1), interpolar electrode (2) and potential electrode (3) are etched in the upper surface of insulated substrate (6), surround electrode (4) is etched in the surrounding of insulated substrate (6), and bottom electrode (5) is etched in the lower surface of insulated substrate (6); Insulating protective layer (8) covers the upper surface of printed circuit board (PCB) (7) completely.
2. plane capacitance tomography sensor according to claim 1, is characterized in that: printed circuit board (PCB) (7) is made up of exciting electrode (1), interpolar electrode (2), potential electrode (3), surround electrode (4), bottom electrode (5) and insulated substrate (6); Exciting electrode (1) and potential electrode (3) 36 altogether, their shape is all square, and size is the same; Interpolar electrode (2) is there is between exciting electrode (1) and potential electrode (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520420776.9U CN204855437U (en) | 2015-06-17 | 2015-06-17 | Plane electrical capacitance tomography sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520420776.9U CN204855437U (en) | 2015-06-17 | 2015-06-17 | Plane electrical capacitance tomography sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204855437U true CN204855437U (en) | 2015-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520420776.9U Expired - Fee Related CN204855437U (en) | 2015-06-17 | 2015-06-17 | Plane electrical capacitance tomography sensor |
Country Status (1)
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| CN (1) | CN204855437U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105675704A (en) * | 2015-12-31 | 2016-06-15 | 华北电力大学 | ECT imaging system-based three dimensional full-open flame detection sensor |
| CN107340322A (en) * | 2017-06-08 | 2017-11-10 | 西安理工大学 | Multichannel triarray planar capacitance sensor the cannot-harm-detection device and method |
| CN109187670A (en) * | 2018-10-16 | 2019-01-11 | 国网山东省电力公司信息通信公司 | A kind of communications optical cable splice tray intelligent checking system |
| CN110208338A (en) * | 2019-07-15 | 2019-09-06 | 哈尔滨工业大学（深圳） | A kind of traction steel band non-destructive testing device and method based on micro- capacitor |
| CN110441354A (en) * | 2019-08-13 | 2019-11-12 | 中国工程物理研究院化工材料研究所 | Plastic bonded explosive Density Distribution detection method based on capacitance chromatography imaging |
| CN110514703A (en) * | 2019-09-06 | 2019-11-29 | 哈尔滨工业大学 | A kind of capacitance tomography system and detection method of plane formula |
| CN112730542A (en) * | 2020-10-15 | 2021-04-30 | 中国民航大学 | Planar array capacitance value imaging sensor |
-
2015
- 2015-06-17 CN CN201520420776.9U patent/CN204855437U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105675704A (en) * | 2015-12-31 | 2016-06-15 | 华北电力大学 | ECT imaging system-based three dimensional full-open flame detection sensor |
| CN105675704B (en) * | 2015-12-31 | 2018-05-25 | 华北电力大学 | Three-dimensional full open model flame detection sensor based on ECT systems |
| CN107340322A (en) * | 2017-06-08 | 2017-11-10 | 西安理工大学 | Multichannel triarray planar capacitance sensor the cannot-harm-detection device and method |
| CN107340322B (en) * | 2017-06-08 | 2020-09-25 | 西安理工大学 | Nondestructive testing device and method for multi-channel triangular array planar capacitive sensor |
| CN109187670A (en) * | 2018-10-16 | 2019-01-11 | 国网山东省电力公司信息通信公司 | A kind of communications optical cable splice tray intelligent checking system |
| CN110208338A (en) * | 2019-07-15 | 2019-09-06 | 哈尔滨工业大学（深圳） | A kind of traction steel band non-destructive testing device and method based on micro- capacitor |
| CN110441354A (en) * | 2019-08-13 | 2019-11-12 | 中国工程物理研究院化工材料研究所 | Plastic bonded explosive Density Distribution detection method based on capacitance chromatography imaging |
| CN110441354B (en) * | 2019-08-13 | 2021-09-28 | 中国工程物理研究院化工材料研究所 | High polymer bonded explosive density distribution detection method based on capacitance tomography |
| CN110514703A (en) * | 2019-09-06 | 2019-11-29 | 哈尔滨工业大学 | A kind of capacitance tomography system and detection method of plane formula |
| CN112730542A (en) * | 2020-10-15 | 2021-04-30 | 中国民航大学 | Planar array capacitance value imaging sensor |
| CN112730542B (en) * | 2020-10-15 | 2023-01-17 | 中国民航大学 | Planar array capacitance value imaging sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20160617 |