CN2902191Y - Electrode array sensor used for electrical impedance imaging - Google Patents
Electrode array sensor used for electrical impedance imaging Download PDFInfo
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- CN2902191Y CN2902191Y CN 200620025265 CN200620025265U CN2902191Y CN 2902191 Y CN2902191 Y CN 2902191Y CN 200620025265 CN200620025265 CN 200620025265 CN 200620025265 U CN200620025265 U CN 200620025265U CN 2902191 Y CN2902191 Y CN 2902191Y
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Abstract
An electrode array sensor for resistance anti-fault imaging comprises a columnar electrode and an electrode dial; wherein, the figure of the electrode dial is a plane dial, the columnar electrode is positioned on one side of the electrode dial, and an olumn axis is vertical to the electrode dial which assumes two-dimensional distribution, thus forming an electrode array. The electrode array topologically arranges according to equilateral triangle, and the six same electrodes equiangularly and equidistantly distribute around each electrode. When some electrode is injected drive current, a three-dimensional electric field is formed under the surface of the measured body according to the impedance distribution of tissue, and the other electrodes can respond to the electric field distribution through human tissue to obtain some deep-seated fault information of human tissue parallelized to the electrode dial plane. A signal collection portion of resistance anti-fault imaging system is composed of the electrode array, a current drive circuit, a gating switch array and a signal checking circuit. Gained after demodulation and modulus transformation, digital signals are input to a terminal computer through digital signals processing circuit.
Description
Affiliated technical field
This utility model belongs to the biomedical measurement field, is mainly used in the measurement of electrical impedance tomography.
Background technology
The different tissues that the electrical impedance tomography technology is based on human body has this physical principle of different electrical impedance characteristicses, by apply safe alternation exciting current to human body, from the body surface measurement response signal voltage, rebuild the image of the internal impedance distribution of reflection human body or its change profile, it mainly is made up of pick off, data collecting system and image reconstruction software three parts.The effect of pick off and data collecting system is obtained measuring-signal from body surface exactly, and therefrom demodulates the signal of telecommunication that the antimer internal impedance distributes, and provides high-precision data for the impedance image restructing algorithm behind A/D and date processing.
In traditional electrical impedance tomography system, front end sensors is made of a plurality of electrodes (being generally 16,32), electrode equidistantly be installed on measured section around and evenly distributed in the form of a ring on this cross section, electrode surface contacts with testee.One alternating current is put on the pair of electrodes as excitation, utilize other each electrode that does not apply electric current to carry out impedance measurement, in case after all electrodes all take turns to be used as exciting electrode, just finished a data collection period.By the impedance of electrode measurement and change as calculated that machine calculates the distribution of impedance image that can draw out in the reflected measurement cross section by image reconstruction algorithm.
In present system, there is limitation in the distribution of electrodes of this electrical impedance tomography in practice: on the one hand, its use is confined to the brain of human body, and breast abdomen, limbs etc. can be approximately a column type position with certain electrical impedance distribution; The edge of at every turn can only counter electrode arranging place, plane tomography carries out the measurement of Electric Field Distribution and can only obtain distribution of impedance information in this plane.On the other hand, because electrode is evenly distributed in the form of a ring, so great limitation is quantitatively arranged, the quantity of information of acquisition is less, and image effect is not satisfactory.
Summary of the invention
In order to solve the technical limitation that exists in the above-mentioned traditional electrical impedance fault imaging distribution of electrodes, this utility model provides a kind of new electrod-array that is used for electrical impedance imaging, and its structure and electrode arrangement all are different from traditional approach.
The technical scheme that its technical problem that solves this utility model adopts is: the electrode disk profile is a planar disk, and columnar electrode is positioned at a side of electrode disk, is Two dimensional Distribution perpendicular to electrode disk, forms electrod-array.Electrod-array is pressed the equilateral triangle topological arrangement, isogonism around each electrode, is equidistantly distributing 6 identical electrodes (except the edge small number of electrodes), and it distributes as shown in Figure 1.During test that electrode disk is smooth in test surfaces and pressing down gently, each electrode is fully contacted with measured surface.
Electrod-array constitutes the part of data acquisition of electrical impedance tomography system with current excitation circuit, gating switch array and signal deteching circuit, after demodulator circuit, analog digital conversion, obtain digital signal, after this signal is handled by digital signal processing circuit, under the effect of control circuit, be input to terminal computer, as Fig. 3.
The beneficial effects of the utility model are, have changed electrode and the measurement plane traditional form that planar shaped is arranged circlewise that coexists, and replace with each electrode all perpendicular to electrode disk and form the new spread pattern of a planar array.In the time of certain electrode input stimulus electric current, can under the surface of this tested human body, the distribution of impedance by tissue form a three-dimensional electric field, other each electrode can both form response to this Electric Field Distribution by tissue, obtain some deep-seated fault images that are parallel to the planar tissue of electrode disk, obtain intravital deep information thereby be implemented in human body surface.
For this utility model, because the rounded projections arranged mode that electrode adopts isogonism, equidistantly distributes, for follow-up imaging algorithm provides new approach on subdivision is handled.
For this utility model, owing to adopted a large amount of electrodes, the quantity of information of acquisition is bigger, and resulting image effect is better.
Description of drawings
Below in conjunction with drawings and Examples this utility model is further specified.
Fig. 1 is the sketch map of this utility model electrod-array flat topology structure.
Fig. 2 is the electrod-array schematic appearance.
Fig. 3 is data acquisition and control, converting system structured flowchart.
1. electrodes, 2. electrode disk among the figure.
The specific embodiment
Fig. 1 has represented the position and the spatial topotaxy thereof of each electrode in the electrod-array.Electrode becomes the equilateral triangle topology distribution, and promptly any three electrodes all are projected as three summits of equilateral triangle on the electrode disk plane.In the present embodiment, the plan range between per two electrode centers points is 10mm.Electrode is totally 19 row, 211.
In the embodiment shown in Figure 2, single electrode is the hemispherical head cylinder, high 6mm, and diameter 3mm, material is copper gold-plated.Single electrode is installed on the electrode disk according to spatial arrangements shown in Figure 1.Electrode disk is the epoxy resin printed substrate, circle, and diameter 150mm, thick 1.5mm punches on the plate.
Fig. 3 has represented the electrod-array pick off in use, the The Nomenclature Composition and Structure of Complexes of measuring system.
Claims (1)
- A kind of electrod-array pick off that is used for electrical impedance imaging, comprise columnar electrode and electrode disk, it is characterized in that: a plurality of columnar electrodes are positioned at a side of electrode disk and are Two dimensional Distribution perpendicular to electrode disk, form electrod-array, electrod-array is pressed the equilateral triangle topological arrangement, isogonism around each electrode, equidistantly distributing 6 identical electrodes, except the edge small number of electrodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620025265 CN2902191Y (en) | 2006-01-25 | 2006-01-25 | Electrode array sensor used for electrical impedance imaging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620025265 CN2902191Y (en) | 2006-01-25 | 2006-01-25 | Electrode array sensor used for electrical impedance imaging |
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| Publication Number | Publication Date |
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| CN2902191Y true CN2902191Y (en) | 2007-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200620025265 Expired - Fee Related CN2902191Y (en) | 2006-01-25 | 2006-01-25 | Electrode array sensor used for electrical impedance imaging |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101480337B (en) * | 2008-01-25 | 2010-09-08 | 中国医学科学院生物医学工程研究所 | Multi-depth layer electric impedance tomography system |
| GB2471873A (en) * | 2009-07-15 | 2011-01-19 | Wzvi Ltd | Electrode array arranged on a triangular grid for electrical impedance imaging |
| CN102138790A (en) * | 2011-03-28 | 2011-08-03 | 中国医学科学院生物医学工程研究所 | Method and device for testing performance of 3D electrical impedance tomography imaging system |
| CN102556931A (en) * | 2011-12-19 | 2012-07-11 | 上海交通大学 | Microelectrode array with electrode point distance capable of exceeding micromaching precision and preparation method of microelectrode array |
| CN102764120A (en) * | 2012-08-17 | 2012-11-07 | 思澜科技（成都）有限公司 | Electrode cover for mammography |
| CN102802518A (en) * | 2009-11-23 | 2012-11-28 | 朴文绪 | Electrode apparatus for measuring impedance within the human body, and apparatus using same for measuring impedance within the human body and performing treatment |
| CN103054578A (en) * | 2013-01-24 | 2013-04-24 | 四川大学 | Meridian point search tester |
| CN105334405A (en) * | 2014-07-07 | 2016-02-17 | 北京大学深圳研究生院 | Electrical characteristic detector for liquid drink |
| CN105758563A (en) * | 2015-04-03 | 2016-07-13 | 中国医学科学院生物医学工程研究所 | Single-side electrode flexible touch sense sensor array based on electrical impedance distributed measurement |
| CN106236092A (en) * | 2016-08-22 | 2016-12-21 | 合肥芯福传感器技术有限公司 | EIT electrod-array and manufacture method thereof and device based on this electrod-array |
| CN106324357A (en) * | 2016-08-08 | 2017-01-11 | 西安理工大学 | Plant leaf resistance distribution measurement method and application thereof |
| CN106456040A (en) * | 2014-02-16 | 2017-02-22 | 王伟 | Apparatus and method for high-resolution electrical impedance imaging |
| CN106491130A (en) * | 2016-11-10 | 2017-03-15 | 西安石油大学 | A kind of massive plate conflux impedance measurement device for being applied to breast carcinoma and method |
| CN106618568A (en) * | 2016-10-12 | 2017-05-10 | 西安石油大学 | Rapid EIS mixed frequency measurement device applied to breast cancer detection |
| CN108709909A (en) * | 2018-06-25 | 2018-10-26 | 中国地质大学（武汉） | A kind of electrode assembly based on EIT non-destructive testing cement base tablets |
-
2006
- 2006-01-25 CN CN 200620025265 patent/CN2902191Y/en not_active Expired - Fee Related
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101480337B (en) * | 2008-01-25 | 2010-09-08 | 中国医学科学院生物医学工程研究所 | Multi-depth layer electric impedance tomography system |
| US8928332B2 (en) | 2009-07-15 | 2015-01-06 | Wzvi Limited | Electrical impedance imaging |
| GB2471873A (en) * | 2009-07-15 | 2011-01-19 | Wzvi Ltd | Electrode array arranged on a triangular grid for electrical impedance imaging |
| GB2471873B (en) * | 2009-07-15 | 2015-09-23 | Wzvi Ltd | Electrical impedance imaging |
| CN102802518B (en) * | 2009-11-23 | 2015-12-09 | Msp有限公司 | For measuring the electrode assembly of human body internal impedance and utilizing this device at the equipment measuring human body internal impedance and treat by acupuncture and moxibustion |
| CN102802518A (en) * | 2009-11-23 | 2012-11-28 | 朴文绪 | Electrode apparatus for measuring impedance within the human body, and apparatus using same for measuring impedance within the human body and performing treatment |
| CN102138790A (en) * | 2011-03-28 | 2011-08-03 | 中国医学科学院生物医学工程研究所 | Method and device for testing performance of 3D electrical impedance tomography imaging system |
| CN102556931A (en) * | 2011-12-19 | 2012-07-11 | 上海交通大学 | Microelectrode array with electrode point distance capable of exceeding micromaching precision and preparation method of microelectrode array |
| CN102556931B (en) * | 2011-12-19 | 2014-11-19 | 上海交通大学 | Microelectrode array with electrode point distance capable of exceeding micromaching precision and preparation method of microelectrode array |
| CN102764120A (en) * | 2012-08-17 | 2012-11-07 | 思澜科技（成都）有限公司 | Electrode cover for mammography |
| CN103054578A (en) * | 2013-01-24 | 2013-04-24 | 四川大学 | Meridian point search tester |
| CN106456040A (en) * | 2014-02-16 | 2017-02-22 | 王伟 | Apparatus and method for high-resolution electrical impedance imaging |
| CN106456040B (en) * | 2014-02-16 | 2019-10-11 | 宁波威联生物科技有限公司 | The device and method of " high-resolution " electrical impedance imaging |
| CN105334405A (en) * | 2014-07-07 | 2016-02-17 | 北京大学深圳研究生院 | Electrical characteristic detector for liquid drink |
| CN105334405B (en) * | 2014-07-07 | 2019-04-09 | 北京大学深圳研究生院 | A kind of electrical characteristic detector of liquid beverage |
| CN105758563A (en) * | 2015-04-03 | 2016-07-13 | 中国医学科学院生物医学工程研究所 | Single-side electrode flexible touch sense sensor array based on electrical impedance distributed measurement |
| CN106324357A (en) * | 2016-08-08 | 2017-01-11 | 西安理工大学 | Plant leaf resistance distribution measurement method and application thereof |
| CN106236092A (en) * | 2016-08-22 | 2016-12-21 | 合肥芯福传感器技术有限公司 | EIT electrod-array and manufacture method thereof and device based on this electrod-array |
| CN106618568A (en) * | 2016-10-12 | 2017-05-10 | 西安石油大学 | Rapid EIS mixed frequency measurement device applied to breast cancer detection |
| CN106618568B (en) * | 2016-10-12 | 2020-05-12 | 西安石油大学 | Rapid EIS (electronic impedance spectroscopy) mixing measuring device applied to breast cancer detection |
| CN106491130A (en) * | 2016-11-10 | 2017-03-15 | 西安石油大学 | A kind of massive plate conflux impedance measurement device for being applied to breast carcinoma and method |
| CN106491130B (en) * | 2016-11-10 | 2019-08-06 | 西安石油大学 | A kind of massive plate conflux impedance measurement device and method applied to breast cancer |
| CN108709909A (en) * | 2018-06-25 | 2018-10-26 | 中国地质大学（武汉） | A kind of electrode assembly based on EIT non-destructive testing cement base tablets |
| CN108709909B (en) * | 2018-06-25 | 2023-06-30 | 中国地质大学（武汉） | Electrode device based on EIT nondestructive test cement-based flat plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070523 Termination date: 20100125 |