An electrode device and an electric field detection method

Abstract

The application discloses a detection electrode device and an electric field detection method. The detection electrode device comprises an electrode support and a fixing support. The electrode support is movably connected with a first electrode plate and a second electrode plate. The fixing support comprises a rotating clamping groove interface. One end of the electrode support is connected with the rotating clamping groove interface. The rotating clamping groove interface is a circular interface. The electrode support comprises a cylindrical part. The circular interface is used for accommodating the cylindrical part. The above technical scheme can realize electric field detection in any direction.

Description

Technical Field

[0001] This invention relates to the field of electric field detection technology, and in particular to a detection electrode device and an electric field detection method. Background Technology

[0002] Neuromodulation technology (also known as neurostimulation technology) is based on the neuroplasticity of the brain. It uses physical factors such as electricity, magnetism, light, and sound introduced into neural circuits to stimulate the functional activity of the nervous system. It is now widely used in the research and treatment of cognitive and neurological disorders. Among these neurostimulation techniques, electrical stimulation and magnetic stimulation are the most widely used in clinical practice.

[0003] Currently, neuroelectromagnetic stimulation (NES) technology is widely used not only for the diagnosis and intervention of neuropsychiatric diseases such as depression, epilepsy, Parkinson's disease, and Alzheimer's disease, but also for in-depth research on brain cognitive activities and mechanisms, brain structure and functional areas, and central nervous system conduction, providing a powerful technical means for human brain function research. Non-invasive NES techniques mainly include transcranial magnetic stimulation (TMS), transcranial direct current stimulation (tDCS), and transcranial magneto-acoustic stimulation (TMAS).

[0004] A good electrode detection device is a key factor in evaluating the performance of a non-invasive electromagnetic stimulation technique. With the increasing complexity of multi-physics coupling, the expansion of the detection space, the increasing demands for detection accuracy, the stability of electric field detection, and the detection of multi-angle physical field electrical signals, the need for high-performance electric field detection electrode devices in scientific research is growing. However, due to the innovative nature of non-invasive brain nerve stimulation technology, there is currently limited research both domestically and internationally on the fundamental principles of electric field detection. Summary of the Invention

[0005] This invention provides a detection electrode device and an electric field detection method for detecting electric fields in any direction.

[0006] According to one aspect of the present invention, a detection electrode device is provided for detecting an electric field in any direction; the detection electrode device includes: an electrode support and a fixed support; wherein the electrode support is movably connected to a first electrode plate and a second electrode plate;

[0007] The fixed bracket includes a rotating slot interface, and one end of the electrode bracket is connected to the rotating slot interface; wherein, the rotating slot interface is a circular interface; the electrode bracket includes a cylindrical portion; the circular interface is used to accommodate the cylindrical portion.

[0008] Optionally, the rotating slot interface is a superimposed interface of the circular interface and the square interface; wherein the diameter of the circular interface is larger than the side length of the square interface, and the diagonal length of the square interface is larger than the diameter of the circular interface.

[0009] The electrode support also includes a quadrangular prism portion; the square interface is used to accommodate the quadrangular prism portion.

[0010] Optionally, the electrode holder includes a first clamp and a second clamp, as well as a first slot for fixing the first clamp and a second slot for fixing the second clamp;

[0011] The first clamp includes a first slot for fixing the first electrode plate; the second clamp includes a second slot for fixing the second electrode plate.

[0012] Optionally, a first surface is provided around the first card slot, and a second surface is provided around the second card slot;

[0013] When one end of the first clamp is inserted into the first slot and one end of the second clamp is inserted into the second slot, the first table surface and the second table surface are in contact and insulated from each other.

[0014] Optionally, the first fixture includes a plurality of first sub-fixtures, each of which is pluggably connected to the first slot; each of the first sub-fixtures is inserted into the first slot in a time-sharing manner.

[0015] The second fixture includes a plurality of second sub-fixtures, each of which is pluggably connected to the second slot; each of the second sub-fixtures is inserted into the second slot in a time-sharing manner.

[0016] Optionally, the first electrode plate includes a plurality of first sub-electrode plates, each of which is connected to the first fixture in a time-sharing manner.

[0017] The second electrode plate includes multiple second sub-electrode plates, each of which is connected to the second fixture in a time-sharing manner.

[0018] Optionally, both the first electrode plate and the second electrode plate are silver sheet electrodes.

[0019] Optionally, the detection electrode device further includes: a first connecting line and a second connecting line;

[0020] The first connecting line is electrically connected to the first electrode plate; the second connecting line is electrically connected to the second electrode plate.

[0021] According to another aspect of the present invention, an electric field detection method is provided for detecting an electric field in any direction, and is performed using the above-described detection electrode device; the electric field detection method includes:

[0022] Obtain the potential difference between the first electrode plate and the second electrode plate;

[0023] Based on the potential difference, determine the electric field strength of the first electrode plate and the second electrode plate at the current angle;

[0024] The electrode support is rotated by a preset angle, and the process returns to the step of obtaining the potential difference between the first electrode plate and the second electrode plate, until the angle between the first electrode plate and the second electrode plate is the current angle after the electrode support is rotated by the preset angle.

[0025] Optionally, the electric field detection method further includes:

[0026] The fixed bracket is moved according to a preset rule, and the process returns to the step of obtaining the potential difference between the first electrode plate and the second electrode plate.

[0027] The technical solution of the present invention enables electric field detection by setting the first electrode plate and the second electrode plate on the electrode support, and connecting one end of the electrode support to the rotating slot interface of the fixed support, thereby greatly improving the stability of the detection. The rotating slot interface is a circular interface, and the electrode support includes a cylindrical part, so that the motor support can rotate in the rotating slot interface to realize electric field detection in any direction.

[0028] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of a detection electrode in the prior art;

[0031] Figure 2This is a schematic diagram of the structure of a detection electrode device provided in an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of a fixed bracket provided in an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of an electrode holder provided in an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the structure of a first clamp and a second clamp provided in an embodiment of the present invention;

[0035] Figure 6 This is a schematic diagram of another type of fixed bracket provided in an embodiment of the present invention;

[0036] Figure 7 This is a schematic diagram of another electrode holder provided in an embodiment of the present invention;

[0037] Figure 8 This is a schematic diagram of electric field detection in two orthogonal directions provided in an embodiment of the present invention;

[0038] Figure 9 This is a flowchart of an electric field detection method provided in an embodiment of the present invention. Detailed Implementation

[0039] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0040] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0041] Currently, the two-electrode conductivity meter electrode is the most widely used type of conductivity electrode in China. The structure of this electrode consists of two platinum plates sintered onto two parallel glass plates or the inner wall of a circular glass tube. By adjusting the area and distance of the platinum plates, electrodes with different constant values ​​can be fabricated to detect the conductivity of solutions. The conductivity measurement principle involves placing two parallel plates (or cylindrical electrodes) with a fixed distance between them into the solution being tested. A certain potential is applied across the plates (usually a sinusoidal voltage with a frequency of 1-3 kHz to avoid electrolysis of the solution). The conductivity measured by the conductivity meter is the conductance between the plates, not the electric field strength.

[0042] Figure 1 This is a schematic diagram of the structure of a detection electrode in the prior art. (Reference) Figure 1 The detection electrodes are made using coaxial cables wrapped in shielded mesh. Figure 1 As shown. The detection electrode includes a water-proof shielding layer 01 on its outer side, and electrodes 02 and 03 are disposed inside the water-proof shielding layer 01. Electrodes 02 and 03 are covered with electrode insulating skin 04, and the distance between electrodes 02 and 03 is δ. The potential difference is obtained in real time by detecting the electrode 02 and electrode 03, thereby obtaining the real-time electric field. Another existing technology uses copper wire as the detection electrode. One end of the copper wire is flattened to form an electrode plate, and two copper wires with the same treatment are glued and fixed to maintain a fixed distance between the two copper plates (generally 1mm-2mm), forming parallel electrode plates to detect and obtain the electrical signal. The electric field strength value at that point is then obtained by E=U / d. In the process of detecting the electric field, the detection direction and position of the electrodes in the two existing technologies can only be manually adjusted, resulting in poor accuracy and inability to perform precise vector electric field distribution detection; furthermore, the resolution of the electrodes can only be a fixed value.

[0043] To address the above problems, embodiments of the present invention propose a detection electrode device. Figure 2 This is a schematic diagram of a detection electrode device provided in an embodiment of the present invention. (Reference) Figure 2 The detection electrode device includes an electrode support 10 and a fixed support 20; wherein the electrode support 10 is movably connected to the first electrode plate 31 and the second electrode plate 32.

[0044] Figure 3 This is a schematic diagram of a fixed bracket provided in an embodiment of the present invention. Figure 4 This is a schematic diagram of an electrode holder provided in an embodiment of the present invention. (Reference) Figure 3 and Figure 4The fixed bracket 20 includes a rotating slot interface 21, and the electrode bracket 10 includes a cylindrical portion 11; one end of the electrode bracket 10 is connected to the rotating slot interface 21. The rotating slot interface 21 is a circular interface used to accommodate the cylindrical portion 11.

[0045] The first electrode plate 31 and the second electrode plate 32 include conductive metals, such as copper, silver and other conductive metals. In an optional embodiment, the first electrode plate 31 and the second electrode plate 32 are both silver sheet electrodes. Silver has high conductivity and high sensitivity when performing electric field detection.

[0046] For example, the first electrode plate 31 and the second electrode plate 32 can be connected to the electrode support 10, for example, by using glue to fix the first electrode plate 31 and the second electrode plate 32 to the electrode support 10. During electric field detection, under the action of an external stimulation electric field (such as TMS or TMAS electric field), the positive and negative ions in the conductive solution / conductive solid phantom converge on the first electrode plate 31 and the second electrode plate 32 respectively, forming a potential difference, thereby determining the real-time electric field. The cylindrical part 11 of the electrode support 10 can be inserted into the circular interface of the rotating slot interface 21 of the fixed support 20. The electrode support 10 can be fixed on the fixed support 20 and rotate within the rotating slot interface 21, and can drive the first electrode plate 31 and the second electrode plate 32 to rotate, so that the first electrode plate 31 and the second electrode plate 32 can achieve electric field detection at any angle. The fixed support 20 can also be fixed to the three-dimensional moving support using the threaded hole 22, thereby realizing electric field detection at any position and any angle.

[0047] In an optional embodiment, the first electrode plate 31 and the second electrode plate 32 are parallel to each other, which allows the positive and negative ions in the conductive solution / conductive solid phantom to converge on the two parallel silver plates respectively under the action of an external stimulation electric field, forming an approximately uniform electric field and improving the accuracy of the detection results.

[0048] In this embodiment of the invention, by setting the first electrode plate and the second electrode plate on the electrode support, and connecting one end of the electrode support to the rotating slot interface of the fixed support, electric field detection can be realized, and the stability of the detection can be greatly improved. The rotating slot interface is a circular interface, and the electrode support includes a cylindrical part, so that the motor support can rotate in the rotating slot interface to realize electric field detection in any direction.

[0049] In electromagnetic nerve stimulation (EMS) technology, the direction of the generated electric field has a significant impact on the stimulation effect. The effect of stimulating the electric field along the nerve pathway and at an angle to the nerve pathway are different. In the embodiments of this invention, the detection direction can be changed more flexibly, which is of great significance for the development and research of electrostimulation technology. It can measure the electric field intensity at different angular vector directions at a point in space for various non-invasive electromagnetic stimulation techniques, such as transcranial magnetic stimulation (TMS) and transcranial magnetoacoustic stimulation (TMAS), and can be combined with a three-dimensional scanning device to realize the three-dimensional distribution detection of the electric field at any angle.

[0050] Optional, continue to refer to Figure 4 The detection electrode device also includes a first connecting line 311 and a second connecting line 321. The first connecting line 311 is electrically connected to the first electrode plate 31, and the second connecting line 321 is electrically connected to the second electrode plate 32.

[0051] For example, both the first connecting line 311 and the second connecting line 321 are electrically connected to the signal acquisition device. The first connecting line 311 is used to transmit the potential of the first electrode plate 31 to the signal acquisition device, and the second connecting line 321 is used to transmit the potential of the second electrode plate 32 to the signal acquisition device. In an optional embodiment, both the first connecting line 311 and the second connecting line 321 are silver wires, and both have an insulating shielding layer on their outer side to improve the accuracy of electric field detection.

[0052] Optional, continue to refer to Figure 4 The electrode holder includes a first clamp 41 and a second clamp 42, as well as a first slot 43 for fixing the first clamp 41 and a second slot 44 for fixing the second clamp 42. Figure 5 This is a schematic diagram of the structure of a first clamp and a second clamp provided in an embodiment of the present invention, with reference to... Figure 5 The first clamp 41 includes a first slot 401 for fixing the first electrode plate 31; the second clamp 42 includes a second slot 402 for fixing the second electrode plate 32.

[0053] Specifically, the first clamp 41 is used to connect the first electrode plate 31 and the electrode support 10, and to fix the first electrode plate 31; the second clamp 42 is used to connect the second electrode plate 32 and the electrode support 10, and to fix the second electrode plate 32.

[0054] Optional, continue to refer to Figure 4 and Figure 5 A first platform 403 is provided around the first slot 401, and a second platform 404 is provided around the second slot 402; when one end of the first clamp 41 is inserted into the first slot 43 and one end of the second clamp 42 is inserted into the second slot 44, the first platform 403 and the second platform 404 are in contact, and the first platform 403 and the second platform 404 are insulated from each other.

[0055] For example, the height of the first platform 403 is higher than the height of the first slot 402, and the height of the second platform 404 is higher than the height of the second slot 404. When both the first clamp 41 and the second clamp 42 are inserted into the electrode bracket 10, the first platform 403 and the second platform 404 are in contact, which can make a certain distance between the first electrode plate 31 and the second electrode plate 32, and avoid the first electrode plate 31 and the second electrode plate 32 from being electrically connected, so as to realize electric field detection.

[0056] In an optional embodiment, both the first clamp 41 and the second clamp 42 are provided with a hollowed-out area 50. When both the first clamp 41 and the second clamp 42 are inserted into the electrode support 10, the first connecting line 311 and / or the second connecting line 321 can pass through the hollowed-out area 50 of the first clamp 41 and the hollowed-out area 50 of the second clamp 42, so as to protect the first connecting line 311 and the second connecting line 321 from being damaged, or to prevent the first connecting line 311 and the second connecting line 321 from being messy and affecting the movement of the detection electrode device.

[0057] Optionally, the first fixture includes multiple first sub-fixtures, each first sub-fixture being pluggable to a first slot; each first sub-fixture is inserted into the first slot in a time-sharing manner; the second fixture includes multiple second sub-fixtures, each second sub-fixture being pluggable to a second slot; each second sub-fixture is inserted into the second slot in a time-sharing manner.

[0058] For example, the first fixture includes multiple first sub-fixtures with different first platform heights and / or different first slot areas, and the second fixture includes multiple second sub-fixtures with different second platform heights and / or different second slot areas. During electric field detection, appropriate first and second sub-fixtures can be selected as needed to obtain the corresponding electrode spacing, achieving adjustable detection resolution. Both the first and second sub-fixtures can be made of acrylic material and can be fabricated using 3D printing or machining methods.

[0059] Optionally, the first electrode plate includes multiple first sub-electrode plates, each of which is connected to the first fixture in a time-sharing manner; the second electrode plate includes multiple second sub-electrode plates, each of which is connected to the second fixture in a time-sharing manner.

[0060] For example, the first electrode plate includes multiple first sub-electrode plates with different areas and / or different thicknesses, and the second electrode plate includes multiple second sub-electrode plates with different areas and / or different thicknesses. During electric field detection, appropriate first and second sub-electrode plates can be selected as needed to achieve adjustable detection resolution.

[0061] Optional, Figure 6 This is a schematic diagram of another type of fixed bracket provided in an embodiment of the present invention. Figure 7This is a schematic diagram of another electrode holder provided in an embodiment of the present invention. (See reference) Figure 6 and Figure 7 The rotating slot interface 21 is a superimposed interface of a circular interface and a square interface; wherein, the diameter d of the circular interface is greater than the side length L of the square interface, and the diagonal length D of the square interface is greater than the diameter d of the circular interface; the electrode support 10 also includes a quadrangular prism portion 12; the square interface is used to accommodate the quadrangular prism portion 12.

[0062] For example, Figure 8 This is a schematic diagram of electric field detection in two orthogonal directions provided in an embodiment of the present invention, with reference to... Figure 8 When the quadrangular prism portion 12 of the electrode holder 10 is inserted into the rotating slot interface 21, the electric field detection in two orthogonal directions can be accurately achieved through the square interface and the quadrangular prism portion 12.

[0063] Based on the same inventive concept, embodiments of the present invention also provide an electric field detection method for detecting electric fields in any direction. This electric field detection method can be performed using the detection electrode device provided in any embodiment of the present invention. Figure 9 A flowchart of an electric field detection method provided in an embodiment of the present invention is shown below. Figure 9 The electric field detection method includes:

[0064] S110, Obtain the potential difference between the first electrode plate and the second electrode plate.

[0065] S120. Determine the electric field strength of the first electrode plate and the second electrode plate at the current angle based on the potential difference.

[0066] S130. Rotate the electrode support by a preset angle and return to the step of obtaining the potential difference between the first electrode plate and the second electrode plate until the angle between the first electrode plate and the second electrode plate is the current angle after rotating the electrode support by the preset angle.

[0067] For example, the signal acquisition device can obtain the potential difference between the first electrode plate and the second electrode plate using the detection electrode device provided in any embodiment of the present invention. The electric field strength of the first and second electrode plates at the current angle can be determined from the potential difference and the distance between them. Depending on the requirements, the electrode support can be rotated at a preset angle, such as 5°, 10°, or 20°, to obtain the electric field strength of the first and second electrode plates at different angles. Rotation stops when the angle between the first and second electrode plates returns to the initial angle, thus completing the detection of the electric field in different directions.

[0068] The electric field detection method provided in the embodiments of the present invention can be executed using the detection electrode device provided in any embodiment of the present invention, and has the corresponding beneficial effects of the detection electrode device.

[0069] Optionally, the electric field detection method further includes: moving the fixed bracket according to a preset rule, and returning to perform the step of obtaining the potential difference between the first electrode plate and the second electrode plate.

[0070] For example, the fixed bracket can be moved at a preset distance and preset angle, thereby moving the electrode bracket and the first and second electrode plates. In this way, the vector electric field at different positions can be measured, thereby realizing the detection of electric field at various positions and in various directions.

[0071] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A detection electrode device, characterized by, Used for detecting electric fields in any direction; the detection electrode device includes: an electrode support and a fixed support; wherein, the electrode support is movably connected to a first electrode plate and a second electrode plate; The fixed bracket includes a rotating slot interface, and one end of the electrode bracket is connected to the rotating slot interface; The rotating slot interface is a superimposed interface of a circular interface and a square interface; wherein, the diameter of the circular interface is greater than the side length of the square interface, and the diagonal length of the square interface is greater than the diameter of the circular interface; The electrode support also includes a quadrangular prism portion; the square interface is used to accommodate the quadrangular prism portion to realize electric field detection in two orthogonal directions; The electrode support includes a cylindrical portion; the circular interface is used to accommodate the cylindrical portion to enable electric field detection in any direction.

2. The sensing electrode device according to claim 1, characterized by The electrode holder includes a first clamp and a second clamp, as well as a first slot for fixing the first clamp and a second slot for fixing the second clamp; The first clamp includes a first slot for fixing the first electrode plate; the second clamp includes a second slot for fixing the second electrode plate.

3. The sensing electrode device according to claim 2, wherein A first platform is provided around the first card slot, and a second platform is provided around the second card slot; When one end of the first clamp is inserted into the first slot and one end of the second clamp is inserted into the second slot, the first table surface and the second table surface are in contact and insulated from each other.

4. The sensing electrode device according to claim 2, wherein The first fixture includes a plurality of first sub-fixtures, each of which is pluggably connected to the first slot; each of the first sub-fixtures is inserted into the first slot in a time-sharing manner. The second fixture includes a plurality of second sub-fixtures, each of which is pluggably connected to the second slot; each of the second sub-fixtures is inserted into the second slot in a time-sharing manner.

5. The sensing electrode device according to claim 2, wherein The first electrode plate includes a plurality of first sub-electrode plates, and each first sub-electrode plate is connected to the first fixture in a time-sharing manner; The second electrode plate includes multiple second sub-electrode plates, each of which is connected to the second fixture in a time-sharing manner.

6. The sensing electrode device according to claim 1, wherein Both the first electrode plate and the second electrode plate are silver sheet electrodes.

7. The sensing electrode device according to claim 1, wherein The detection electrode device further includes: a first connecting line and a second connecting line; The first connecting line is electrically connected to the first electrode plate; the second connecting line is electrically connected to the second electrode plate.

8. An electric field detecting method characterized by, The method for detecting electric fields in any direction is performed using the detection electrode device described in any one of claims 1-7; the electric field detection method includes: Obtain the potential difference between the first electrode plate and the second electrode plate; Based on the potential difference, determine the electric field strength of the first electrode plate and the second electrode plate at the current angle; The electrode support is rotated by a preset angle, and the process returns to the step of obtaining the potential difference between the first electrode plate and the second electrode plate, until the angle between the first electrode plate and the second electrode plate is the current angle after the electrode support is rotated by the preset angle.

9. The electric field detection method according to claim 8, wherein The electric field detection method further includes: The fixed bracket is moved according to a preset rule, and the process returns to the step of obtaining the potential difference between the first electrode plate and the second electrode plate.

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