CN204462065U - A kind of hand-held capacitance imaging probe - Google Patents
A kind of hand-held capacitance imaging probe Download PDFInfo
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- CN204462065U CN204462065U CN201520162276.XU CN201520162276U CN204462065U CN 204462065 U CN204462065 U CN 204462065U CN 201520162276 U CN201520162276 U CN 201520162276U CN 204462065 U CN204462065 U CN 204462065U
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Abstract
The utility model relates to a kind of hand-held capacitance imaging probe, and its structure comprises handle, metal shell, printed circuit board (PCB), insulating protective layer, drive electrode, potential electrode, surround electrode, insulated substrate.Printed circuit board (PCB) is embedded in metal shell, and masked segment electric field is revealed, and reduces electric field leakage to the interference of measuring; Insulating protective layer covers printed circuit board (PCB) completely and is pasted onto on metal shell, reduces external noise signals to the impact of measuring.Printed circuit board (PCB) is made up of drive electrode, potential electrode, surround electrode and insulated substrate, the shape of drive electrode and potential electrode is all circular, and be distributed on the same plane of insulated substrate, this printed circuit board (PCB) can improve the imaging performance of capacitance imaging device, makes capacitance imaging device may be used for detecting the defect of insulator surface and inner defect and conductive surface.
Description
Technical field
The utility model belongs to capacitance imaging field, relates to a kind of imaging probe, and particularly a kind of capacitance imaging is popped one's head in.
Background technology
Capacitance imaging technology is a kind of novel Dynamic Non-Destruction Measurement, and it utilizes the quasistatic fringe field formed in the middle of a pair coplanar electrodes plate to detect the defect in test block.Capacitance imaging technology is a kind of lossless detection method of contactless, non-intrusion type, and these features make capacitance imaging technology overcome some limitations of conventional EDDY CURRENT, potential differentiation, supercritical ultrasonics technology, and can apply in material of different nature.
The design of capacitance imaging probe is the key of capacitance imaging technology, and reasonably design makes capacitance imaging technology may be used for detecting the defect of insulator surface and inner defect and conductive surface.It is worthy of note, for the detection of surface defect, even also can realize when conductor test block surface is coated with relatively thick insulation course.
Probe at present for imaging extensively exists, but most imaging probe is based on capacitance chromatography imaging principle, the probe that general application capacitance chromatography imaging principle is made has multiple drive electrode and potential electrode, drive electrode and potential electrode are distributed in different planes, this mutual interference ratio just caused between electric field is more serious, drive electrode and potential electrode are directly exposed in air, external noise signals is made to produce larger impact to measurement result, reduce sensitivity and the accuracy of measurement mechanism, the drive electrode of rectangular shape and potential electrode decrease the investigation depth of probe and the intensity of measuring-signal.
Summary of the invention
The utility model is intended to solve the problem, and provide a kind of hand-held capacitance imaging probe, its technical scheme adopted is as follows:
A hand-held capacitance imaging probe, comprises handle, metal shell, printed circuit board (PCB), insulating protective layer, drive electrode, potential electrode, surround electrode, insulated substrate; Handle is arranged on metal shell, and printed circuit board (PCB) is embedded in metal shell, and insulating protective layer covers printed circuit board (PCB) completely and is pasted onto on metal shell.Printed circuit board (PCB) is made up of drive electrode, potential electrode, surround electrode and insulated substrate, and the shape of drive electrode and potential electrode is all circular, and these two electrodes are etched on the same plane of insulated substrate.
The beneficial effects of the utility model:
Printed circuit board (PCB) of the present utility model is embedded in metal shell, effectively the leakage of masked segment electric field and minimizing electric field can reveal the interference to measuring, thus increase the intensity of investigation depth and measuring-signal, the accuracy of raising testing result.
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.
Printed circuit board (PCB) of the present utility model is made up of drive electrode, potential electrode, surround electrode and insulated substrate, drive electrode and potential electrode are etched on the same plane of insulated substrate, change the form of conventional condenser sensor, drive electrode and potential electrode are no longer distributed on two parallel planes, reduce the measuring error caused by wire, improve accuracy and the sensitivity of measuring system.
Drive electrode of the present utility model and potential electrode shape are all circular, and compared with rectangle, the drive electrode of this shape and potential electrode effectively can increase the intensity of investigation depth and measuring-signal.
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, handle 2, metal shell 3, printed circuit board (PCB) 4, insulating protective layer 5, drive electrode 6, potential electrode 7, surround electrode 8, insulated substrate.
Embodiment
Below in conjunction with accompanying drawing and instantiation, the utility model is described in further detail:
A kind of hand-held capacitance imaging probe as shown in Figure 1, comprises handle (1), metal shell (2), printed circuit board (PCB) (3), insulating protective layer (4), drive electrode (5), potential electrode (6), surround electrode (7), insulated substrate (8).Handle (1) is arranged on metal shell (2); printed circuit board (PCB) (3) is embedded in metal shell (2), and insulating protective layer (4) covers printed circuit board (PCB) (3) completely and is pasted onto on metal shell (2).
Printed circuit board (PCB) as shown in Figure 2, comprise drive electrode (5), potential electrode (6), surround electrode (7) and insulated substrate (8), the shape of drive electrode (5) and potential electrode (6) is all circular, and is distributed on the same plane of insulated substrate (8).
The above, be only a kind of embodiment of the present invention, not deliberately for limiting protection scope of the present invention.
Claims (4)
1. a hand-held capacitance imaging probe, its structure comprises: handle (1), metal shell (2), printed circuit board (PCB) (3), insulating protective layer (4), drive electrode (5), potential electrode (6), surround electrode (7), insulated substrate (8); Handle (1) is arranged on metal shell (2), and printed circuit board (PCB) (3) is embedded in metal shell (2), and insulating protective layer (4) is pasted onto on metal shell (2).
2. hand-held capacitance imaging is popped one's head according to claim 1, it is characterized in that: insulating protective layer (4) covers printed circuit board (PCB) (3) completely.
3. hand-held capacitance imaging is popped one's head according to claim 1, it is characterized in that: printed circuit board (PCB) (3) is made up of drive electrode (5), potential electrode (6), surround electrode (7) and insulated substrate (8), drive electrode (5) and potential electrode (6) are etched on the same plane of insulated substrate (8).
4. hand-held capacitance imaging is popped one's head according to claim 1, it is characterized in that: the shape of drive electrode (5) and potential electrode (6) is all circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520162276.XU CN204462065U (en) | 2015-03-20 | 2015-03-20 | A kind of hand-held capacitance imaging probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520162276.XU CN204462065U (en) | 2015-03-20 | 2015-03-20 | A kind of hand-held capacitance imaging probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204462065U true CN204462065U (en) | 2015-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520162276.XU Expired - Fee Related CN204462065U (en) | 2015-03-20 | 2015-03-20 | A kind of hand-held capacitance imaging probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204462065U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3495808A1 (en) * | 2017-12-05 | 2019-06-12 | Airbus Helicopters | A probe for non-intrusively detecting imperfections in a test object |
| CN111289585A (en) * | 2018-12-10 | 2020-06-16 | 中国石油化工股份有限公司 | Multi-electrode annular capacitive imaging sensor |
| CN113945983A (en) * | 2021-10-21 | 2022-01-18 | 西南石油大学 | Buried pipeline detection device and identification method based on capacitance tomography |
-
2015
- 2015-03-20 CN CN201520162276.XU patent/CN204462065U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3495808A1 (en) * | 2017-12-05 | 2019-06-12 | Airbus Helicopters | A probe for non-intrusively detecting imperfections in a test object |
| US11366150B2 (en) | 2017-12-05 | 2022-06-21 | Airbus Helicopters | Probe for non-intrusively detecting imperfections in a test object |
| US11733282B2 (en) | 2017-12-05 | 2023-08-22 | Airbus Helicopters | Probe for non-intrusively detecting imperfections in a test object |
| CN111289585A (en) * | 2018-12-10 | 2020-06-16 | 中国石油化工股份有限公司 | Multi-electrode annular capacitive imaging sensor |
| CN113945983A (en) * | 2021-10-21 | 2022-01-18 | 西南石油大学 | Buried pipeline detection device and identification method based on capacitance tomography |
| CN113945983B (en) * | 2021-10-21 | 2023-08-22 | 西南石油大学 | Buried pipeline detection device and identification method based on capacitance tomography |
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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 |
Granted publication date: 20150708 Termination date: 20160320 |
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| CF01 | Termination of patent right due to non-payment of annual fee |