CN114088806A - Identification method and identification device for metal putty, electronic equipment and storage medium - Google Patents
Identification method and identification device for metal putty, electronic equipment and storage medium Download PDFInfo
- Publication number
- CN114088806A CN114088806A CN202111364387.5A CN202111364387A CN114088806A CN 114088806 A CN114088806 A CN 114088806A CN 202111364387 A CN202111364387 A CN 202111364387A CN 114088806 A CN114088806 A CN 114088806A
- Authority
- CN
- China
- Prior art keywords
- signal information
- vehicle body
- detected
- impedance data
- excitation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The invention discloses an identification method, an identification device, electronic equipment and a storage medium of metal putty, wherein the identification method comprises the following steps: s1: detecting the surface or the vicinity of the surface of the vehicle body to be detected by using an eddy current probe; s2: acquiring excitation signal information passing through an excitation coil and measurement signal information generated on the surface of a vehicle body to be detected in the detection process; s3: calculating impedance data of the vehicle body to be measured according to the obtained excitation signal information and the measurement signal information; s4: calculating a phase offset angle according to the acquired impedance data and prestored impedance data; s5: calculating the conductivity of the vehicle body to be measured according to the phase deviation angle; s6: comparing the detected conductivity with a preset threshold value, and judging whether metal putty is coated on the vehicle body to be detected; the method can identify whether the vehicle body is coated with the metal putty.
Description
Technical Field
The invention relates to the technical field of detection, in particular to a metal putty identification method, a metal putty identification device, electronic equipment and a storage medium.
Background
After the body of the automobile is scratched, dented and damaged, the repair is generally performed by the following means: (1) vehicle paint scratches are typically repainted directly at the location of the scratch. (2) When the vehicle body is sunken and repaired, the sunken part needs to be pulled back to the original position as much as possible, then the sunken part is puttied and polished for many times, and then paint is repaired. (3) When the automobile body is damaged and repaired, the damaged part needs to be pulled back to the original position as much as possible, then the damaged part is welded completely, and then the surface welding line is polished to be smooth. In order to make the surface smooth, the damaged part needs to be puttied and polished for many times, and then paint is repaired. The three above-mentioned repair methods for vehicle bodies all result in a thickened paint film of the vehicle body.
The putty is filled in a deformed automobile body part or a repaired part which is not completely repaired and flat, and the repaired part is made to be very close to the original shape of the automobile body through grinding and polishing after the putty is cured. The traditional putty is generally a paste material made of non-metallic materials, and the magnetic permeability and the electric conductivity of the traditional putty are close to those of paint made of non-metallic materials, but are greatly different from those of a metal car body.
In the second-hand vehicle transaction, one key point of vehicle evaluation is to identify whether the vehicle is an accident vehicle, in order to identify the repaired camouflage accident vehicle, a paint film instrument is generally adopted in the industry to detect the thickness of a coating (including paint films and putty) on the surface of the vehicle body, and whether the vehicle body is damaged or not and the damage degree is judged according to the thickness value of the coating (generally, the thicker the coating is, the more serious the damage is). The market value of the accident vehicle is relatively low, so that the phenomenon that some people and enterprises intentionally pack the accident vehicle into normal second-hand vehicles for sale is promoted.
But with the popularization of paint film instruments, the chance of the accident car imitating a normal second-hand car is basically stopped. But this stimulates the illegal vendors to begin to explore the holes of the traditional paint film machines and thus the metal putty appears on the market. After the body of the accident vehicle is sunken and damaged, after the repair of metal putty and the fine adjustment of paint spraying, the detection data obtained by using the existing paint film instrument is very close to the data detected by the intact body, thereby achieving the purpose of covering the damage of the vehicle. At present, the automobile repaired by the metal putty on the market has no good method for detecting.
Disclosure of Invention
The invention aims to provide a metal putty identification method, an identification device, electronic equipment and a storage medium.
The technical scheme is as follows:
the invention discloses a method for identifying metal putty in one embodiment, which comprises an eddy current probe, wherein a magnetic core is arranged on the eddy current probe, and an excitation coil and a detection coil are wound on the magnetic core, and the method comprises the following steps:
s1: detecting the surface or the vicinity of the surface of the vehicle body to be detected by using an eddy current probe;
s2: acquiring excitation signal information passing through an excitation coil and measurement signal information generated on the surface of a vehicle body to be detected in the detection process;
s3: calculating impedance data of the vehicle body to be measured according to the obtained excitation signal information and the measurement signal information;
s4: calculating a phase deviation angle according to the acquired impedance data and prestored impedance data;
s5: calculating the conductivity of the vehicle body to be measured according to the phase deviation angle;
s6: comparing the detected conductivity with a preset threshold value, and judging whether metal putty is coated on the vehicle body to be detected;
the excitation signal information is the signal information of excitation current generated after alternating current is introduced into an excitation coil when the eddy current probe detects the surface or the vicinity of the surface of the vehicle body to be detected; the measurement signal information is electromagnetic signal information of an electromagnetic field generated in the vehicle body under test.
Further, in step S6, the method specifically includes:
s61: comparing the detected conductivity with a preset threshold value;
s62: if the conductivity is smaller than a preset threshold value, coating metal putty on the vehicle body to be detected;
s63: if the conductivity is larger than the preset threshold value, metal putty is not smeared on the vehicle body to be detected.
Further, the pre-stored impedance data is impedance data obtained by calculating the eddy current probe in a suspended state, and the pre-stored impedance data is obtained through the following steps:
the eddy current probe is in a suspended state, and alternating current is introduced into the exciting coil;
acquiring excitation signal information passing through the excitation coil and measurement signal information generated in the excitation coil;
and calculating impedance data of the eddy current probe in a suspended state according to the acquired excitation signal information and the acquired measurement signal information, wherein the impedance data is prestored impedance data.
Further, the excitation signal information includes amplitude and phase information of the excitation signal; the measurement signal information includes amplitude and phase information of the measurement signal.
The invention discloses an identification device of metal putty in another embodiment, which comprises:
the eddy current probe is internally provided with a magnetic core, an excitation coil and a detection coil are wound on the magnetic core, and the eddy current probe is used for detecting the surface or the vicinity of the surface of the vehicle body to be detected;
the measuring circuit is used for acquiring excitation signal information passing through the excitation coil and measuring signal information generated on the surface of the vehicle body to be measured;
the processing module is used for calculating impedance data of the vehicle body to be measured according to the acquired excitation signal information and the acquired measurement signal information, and calculating a phase deviation angle according to the obtained impedance data and prestored impedance data, so that the conductivity of the vehicle body to be measured is calculated according to the phase deviation angle;
the judging module is used for comparing the conductivity with a preset threshold value and judging whether metal putty is coated on the vehicle body to be detected or not;
the excitation signal information is signal information of excitation current generated after alternating current is introduced into an excitation coil when the eddy current probe detects the surface of the vehicle body to be detected; the measurement signal information is electromagnetic signal information of an electromagnetic field generated in the vehicle body under test.
Further, the pre-stored impedance data is obtained by calculating the impedance data of the eddy current probe in a suspended state.
Further, the excitation signal information includes amplitude and phase information of the excitation signal; the measurement signal information includes amplitude and phase information of the measurement signal.
The invention, in another embodiment, discloses an electronic device comprising a processor, a memory and a computer program stored on the memory and capable of running on the processor, the computer program, when executed by the processor, implementing the steps of the identification method as described above.
The invention discloses in a further embodiment a computer-readable storage medium on which a computer program is stored which, when being executed by a processor, carries out the steps of the identification method as described above.
The following illustrates the advantages or principles of the invention:
1. when the inventor detects the metal putty, the magnetic conductivity of the metal putty is similar to that of a metal matrix of a perfect automobile body, but the electric conductivity of the metal putty is poor, and the electric conductivity of the metal putty is greatly different from that of the metal matrix of the perfect automobile body. The eddy current probe is used for detecting the conductivity of the vehicle body to be detected, and whether the metal putty is coated on the vehicle body to be detected or not can be judged through the conductivity.
2. The invention adopts an eddy current probe to detect the surface of the vehicle body to be detected or the surface accessory, and the alternating current is introduced into the exciting coil, so that an induction electromagnetic field is generated in the exciting coil, and further, an eddy current and a battery field opposite to the induction electromagnetic field generated in the exciting coil are generated in the vehicle body to be detected. The electromagnetic field generated in the excitation coil is influenced by the reverse electromagnetic field generated in the vehicle body to be measured, and further the current frequency passing through the excitation coil is influenced.
The invention calculates the impedance data of the vehicle body to be measured through the excitation signal information and the measurement signal information, and calculates the phase deviation angle through the impedance data and the pre-stored impedance data. The phase deviation angle is determined by the conductivity of the material, so that the conductivity can be obtained through the phase deviation angle, and the complete matrix and the metal putty of the vehicle body can be distinguished through the conductivity, so that the identification of the metal putty is realized.
Drawings
FIG. 1 is a detailed flow chart of the metal putty identification method of the present invention;
fig. 2 is a schematic diagram of an example of the present invention.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.
As shown in fig. 1, the invention discloses a method for identifying metal putty in one embodiment, which is mainly used for detecting whether a vehicle body to be detected is repaired through the metal putty, so as to avoid the vehicle repaired through the metal putty from imitating a normal and intact vehicle.
It should be noted that: the metal putty is also called data putty and mainly refers to iron putty, and the components of the metal putty are powder with strong ferromagnetism (alloy powder with strong ferromagnetism or materials with similar performance such as metal oxide and the like) which is mixed with organic or inorganic adhesive with extremely low conductivity and various auxiliary agents according to a certain proportion. Methods for applying the metal putty to the vehicle body include, but are not limited to, the following two methods: after iron powder is doped into common putty, the putty is coated on the surface of a car body after metal plates and polishing; or the common putty is coated on the surface of the car body, and then the paint coating containing the magnetic conductive material is sprayed.
Because the metal putty contains a large amount of insulating adhesives, the metal putty has poor conductivity and is obviously different from a vehicle body which is not coated with the metal putty. The identification method of the embodiment is realized by utilizing the conductivity difference between the metal putty and the normal vehicle body.
The existing metal putty aims at the vehicles adopting steel bodies in the market, so the identification method of the embodiment mainly aims at the steel bodies, but the vehicles to be detected by the identification method of the embodiment are not limited to the steel bodies, as long as the bodies are made of materials with high enough magnetic permeability.
As shown in fig. 1, the present invention discloses an identification method of metal putty in one embodiment, including an eddy current probe, on which a magnetic core is arranged, on which an excitation coil and a detection coil are wound, the identification method including the steps of:
s1: an eddy current probe is used to detect at or near the surface of the vehicle body to be measured.
When the eddy current probe is used for detecting a vehicle to be detected, the eddy current probe can be used for sliding scanning on the surface or the non-metal coating of the vehicle to be detected, and the eddy current probe can also be used for point pressure measurement on the surface of the non-metal coating of the vehicle to be detected. When in measurement, the eddy current probe can be in contact with the surface of the non-metal coating of the vehicle body to be measured, and the eddy current probe can also be out of contact with the non-metal coating of the vehicle body to be measured. The above is only an exemplary method for detecting a vehicle body to be measured by using an eddy current probe, but the specific operation is not limited to the above method.
The non-metal coating refers to a paint layer of a vehicle body, and the eddy current probe is an eddy current probe which is used at present.
S2: and acquiring excitation signal information passing through the excitation coil and measurement signal information generated on the surface of the vehicle body to be detected in the detection process.
The magnetic conductivity of the metal putty is close to that of a complete vehicle body, the electric conductivity of a metal matrix of the vehicle body to be detected is larger than that of the metal putty, and the difference between the electric conductivity of the metal putty and the electric conductivity of the vehicle body to be detected is large.
Alternating current is introduced into the exciting coil to generate an induction electromagnetic field in the exciting coil, and then an eddy current and an electromagnetic field opposite to the induction magnetic field generated in the exciting coil are generated in the vehicle body to be tested. The electromagnetic field generated in the exciting coil can be influenced by the reverse electromagnetic field generated in the vehicle body to be tested, and further the frequency of the current in the exciting coil is influenced.
The identification method comprises the steps of firstly obtaining excitation signal information and measurement signal information generated on the surface of a vehicle body to be measured through a measurement circuit. The excitation signal information is the signal information of excitation current generated after alternating current is introduced into an excitation coil when the eddy current probe detects the surface or the vicinity of the surface of the vehicle body to be detected; the measurement signal information is electromagnetic signal information of an electromagnetic field generated in the vehicle body under test. Further, the excitation signal information includes amplitude and phase information of the excitation signal; the measurement signal information includes amplitude and phase information of the measurement signal.
S3: and calculating impedance data of the vehicle body to be measured according to the acquired excitation signal information and the acquired measurement signal information.
S4: and calculating a phase deviation angle according to the acquired impedance data and the pre-stored impedance data.
The pre-stored impedance data is impedance data obtained by calculating the eddy current probe in a suspended state. The pre-stored impedance data is obtained by the following steps:
the eddy current probe is in a suspended state, and alternating current is introduced into the exciting coil;
acquiring excitation signal information passing through the excitation coil and measurement signal information generated in the excitation coil;
and calculating impedance data of the eddy current probe in a suspended state according to the acquired excitation signal information and the acquired measurement signal information, wherein the impedance data is prestored impedance data.
S5: and calculating the conductivity of the vehicle body to be measured according to the phase deviation angle.
S6: and comparing the detected conductivity with a preset threshold value, and judging whether the vehicle body to be detected is coated with metal putty.
Since the phase shift angle is determined by the conductivity of the material, the conductivity of the measured substrate can be derived from the phase shift angle. And because the difference between the electrical conductivity of the metal putty and the electrical conductivity of the vehicle body base material is large, the metal putty and the vehicle body base material can be distinguished by obtaining the electrical conductivity, so that the metal putty can be identified.
Further, in step S6, the method specifically includes:
s61: comparing the detected conductivity with a preset threshold value;
s62: if the conductivity is smaller than a preset threshold value, coating metal putty on the vehicle body to be detected;
s63: if the conductivity is larger than the preset threshold value, metal putty is not smeared on the vehicle body to be detected.
The following describes the identification method of the present embodiment with a specific example:
as shown in fig. 2, the conductivity measured by the eddy current probe in the following states is shown from left to right in fig. 2: the eddy current probe is in a suspended state (no sample is measured), the eddy current probe detects on the surface or the surface of a complete vehicle body, the eddy current probe detects on the surface or the vicinity of the surface of the vehicle body coated with common putty, and the eddy current probe detects on the surface or the surface of the vehicle body coated with metal putty.
It can be seen from the figure that the eddy current probe has the lowest conductivity measured in a suspended state, the highest conductivity measured on the intact vehicle body surface or surface accessory, and the conductivity measured on the vehicle body surface or surface accessory coated with the metal putty is between the lowest conductivity and the highest conductivity. The conductivity measured on the surface of the vehicle body or the surface coated with the ordinary putty is lower than that measured when the metal putty is coated. Because the measured conductivities are different, the identification and the distinction can be carried out through the conductivities.
The invention discloses an identification device of metal putty in another embodiment, which is characterized by comprising:
the eddy current probe is internally provided with a magnetic core, an excitation coil and a detection coil are wound on the magnetic core, the excitation coil is connected with an excitation signal, the detection coil is connected with a measuring circuit, and the eddy current probe is used for detecting the surface or the surface of a vehicle body to be detected.
And the measuring circuit is used for acquiring the excitation signal information passing through the excitation coil and the measuring signal information generated on the surface of the vehicle body to be measured.
And the processing module is used for calculating impedance data of the vehicle body to be measured according to the acquired excitation signal information and the measurement signal information, and calculating a phase deviation angle according to the obtained impedance data and prestored impedance data, so that the conductivity of the vehicle body to be measured is calculated according to the phase deviation angle.
The judging module is used for comparing the conductivity with a preset threshold value and judging whether metal putty is coated on the vehicle body to be detected or not;
the excitation signal information is the signal information of excitation current generated after alternating current is introduced into an excitation coil when the eddy current probe detects the surface or the vicinity of the surface of the vehicle body to be detected; the measurement signal information is electromagnetic signal information of an electromagnetic field generated in the vehicle body under test. The excitation signal information comprises amplitude and phase information of an excitation signal; the measurement signal information includes amplitude and phase information of the measurement signal.
Further, the pre-stored impedance data is obtained by calculating the impedance data of the eddy current probe in a suspended state.
The invention discloses in an embodiment an electronic device comprising a processor, a memory and a computer program stored on the memory and capable of running on the processor, the computer program, when executed by the processor, implementing the steps of the identification method as described above.
The invention discloses in an embodiment a computer readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the identification method as described above.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
The embodiments of the present invention are not limited thereto, and according to the above-mentioned contents of the present invention, the present invention can be modified, substituted or combined in other various forms without departing from the basic technical idea of the present invention.
Claims (9)
1. The identification method of the metal putty comprises an eddy current probe, wherein a magnetic core is arranged on the eddy current probe, and an excitation coil and a detection coil are wound on the magnetic core, and is characterized by comprising the following steps:
s1: detecting the surface or the vicinity of the surface of the vehicle body to be detected by using an eddy current probe;
s2: acquiring excitation signal information passing through an excitation coil and measurement signal information generated on the surface of a vehicle body to be detected in the detection process;
s3: calculating impedance data of the vehicle body to be measured according to the obtained excitation signal information and the measurement signal information;
s4: calculating a phase offset angle according to the acquired impedance data and prestored impedance data;
s5: calculating the conductivity of the vehicle body to be measured according to the phase deviation angle;
s6: comparing the detected conductivity with a preset threshold value, and judging whether metal putty is coated on the vehicle body to be detected;
the excitation signal information is the signal information of excitation current generated after alternating current is introduced into an excitation coil when the eddy current probe detects the surface or the vicinity of the surface of the vehicle body to be detected; the measurement signal information is electromagnetic signal information of an electromagnetic field generated in the vehicle body under test.
2. The identification method for metal putty as recited in claim 1, wherein in step S6, the method specifically includes:
s61: comparing the detected conductivity with a preset threshold value;
s62: if the conductivity is smaller than the preset threshold value, metal putty is coated on the vehicle body to be detected;
s63: if the conductivity is larger than the preset threshold value, metal putty is not smeared on the vehicle body to be detected.
3. The identification method of metal putty as set forth in claim 1 in which the pre-stored impedance data is impedance data calculated by the eddy current probe in a suspended state, the pre-stored impedance data being obtained by the steps of:
the eddy current probe is in a suspended state, and alternating current is introduced into the exciting coil;
acquiring excitation signal information passing through the excitation coil and measurement signal information generated in the excitation coil;
and calculating impedance data of the eddy current probe in a suspended state according to the acquired excitation signal information and the acquired measurement signal information, wherein the impedance data is prestored impedance data.
4. The identification method for metal putty as set forth in any one of claims 1 to 3 characterised in that the excitation signal information includes amplitude and phase information of the excitation signal; the measurement signal information includes amplitude and phase information of the measurement signal.
5. Identification means of metal putty, its characterized in that includes:
the eddy current probe is internally provided with a magnetic core, an excitation coil and a detection coil are wound on the magnetic core, and the eddy current probe is used for detecting the surface or the vicinity of the surface of the vehicle body to be detected;
the measuring circuit is used for acquiring excitation signal information passing through the excitation coil and measuring signal information generated on the surface of the vehicle body to be measured;
the processing module is used for calculating impedance data of the vehicle body to be measured according to the acquired excitation signal information and the measurement signal information, and calculating a phase deviation angle according to the obtained impedance data and prestored impedance data, so that the conductivity of the vehicle body to be measured is calculated according to the phase deviation angle;
the judging module is used for comparing the conductivity with a preset threshold value and judging whether metal putty is coated on the vehicle body to be detected or not;
the excitation signal information is signal information of excitation current generated after alternating current is introduced into an excitation coil when the eddy current probe detects the surface of the vehicle body to be detected; the measurement signal information is electromagnetic signal information of an electromagnetic field generated in the vehicle body under test.
6. The identification apparatus for metal putty according to claim 5 characterised in that the impedance data is calculated from the eddy current probe in a suspended state.
7. The identification apparatus for metal putty according to claim 5 characterised in that the excitation signal information includes amplitude and phase information of the excitation signal; the measurement signal information includes amplitude and phase information of the measurement signal.
8. An electronic device, comprising a processor, a memory and a computer program stored on the memory and capable of running on the processor, the computer program, when executed by the processor, implementing the steps of the identification method according to any one of claims 1 to 4.
9. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the identification method according to one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111364387.5A CN114088806B (en) | 2021-11-17 | 2021-11-17 | Metal putty recognition method, recognition device, electronic equipment and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111364387.5A CN114088806B (en) | 2021-11-17 | 2021-11-17 | Metal putty recognition method, recognition device, electronic equipment and storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114088806A true CN114088806A (en) | 2022-02-25 |
| CN114088806B CN114088806B (en) | 2023-05-09 |
Family
ID=80301647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111364387.5A Active CN114088806B (en) | 2021-11-17 | 2021-11-17 | Metal putty recognition method, recognition device, electronic equipment and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114088806B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1301795A (en) * | 1999-12-24 | 2001-07-04 | 富金精密工业(深圳)有限公司 | Method for applying conductive putty in static coating |
| CN201796013U (en) * | 2010-09-15 | 2011-04-13 | 淄博职业学院 | Electric eddy current metal material analysis sensor |
| CN202420427U (en) * | 2011-11-23 | 2012-09-05 | 西安思坦仪器股份有限公司 | Signal detection system for electromagnetic thickness gauge |
| US20160003776A1 (en) * | 2013-03-19 | 2016-01-07 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method for determining electrical conductivities in samples by means of an eddy current sensor |
| CN107677888A (en) * | 2017-08-24 | 2018-02-09 | 中国矿业大学 | A kind of conductivity metal eddy current detection method |
| CN109115156A (en) * | 2018-10-25 | 2019-01-01 | 金瓜子科技发展（北京）有限公司 | A kind of electronic equipment component, detection device and calibration method |
| CN109269391A (en) * | 2018-10-11 | 2019-01-25 | 广州市果欧电子科技有限公司 | A kind of coating thickness detector and vehicle coatings thickness measure recording method |
| CN111649662A (en) * | 2020-06-17 | 2020-09-11 | 深圳市林上科技有限公司 | Coating thickness gauge and coating thickness detection method |
| CN112666395A (en) * | 2020-12-17 | 2021-04-16 | 蒋峰 | Non-contact metal material conductivity measurement method and system |
| CN113175863A (en) * | 2021-04-20 | 2021-07-27 | 深圳市林上科技有限公司 | Iron powder doped putty layer identification method and paint film instrument |
-
2021
- 2021-11-17 CN CN202111364387.5A patent/CN114088806B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1301795A (en) * | 1999-12-24 | 2001-07-04 | 富金精密工业(深圳)有限公司 | Method for applying conductive putty in static coating |
| CN201796013U (en) * | 2010-09-15 | 2011-04-13 | 淄博职业学院 | Electric eddy current metal material analysis sensor |
| CN202420427U (en) * | 2011-11-23 | 2012-09-05 | 西安思坦仪器股份有限公司 | Signal detection system for electromagnetic thickness gauge |
| US20160003776A1 (en) * | 2013-03-19 | 2016-01-07 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method for determining electrical conductivities in samples by means of an eddy current sensor |
| CN107677888A (en) * | 2017-08-24 | 2018-02-09 | 中国矿业大学 | A kind of conductivity metal eddy current detection method |
| CN109269391A (en) * | 2018-10-11 | 2019-01-25 | 广州市果欧电子科技有限公司 | A kind of coating thickness detector and vehicle coatings thickness measure recording method |
| CN109115156A (en) * | 2018-10-25 | 2019-01-01 | 金瓜子科技发展（北京）有限公司 | A kind of electronic equipment component, detection device and calibration method |
| CN111649662A (en) * | 2020-06-17 | 2020-09-11 | 深圳市林上科技有限公司 | Coating thickness gauge and coating thickness detection method |
| CN112666395A (en) * | 2020-12-17 | 2021-04-16 | 蒋峰 | Non-contact metal material conductivity measurement method and system |
| CN113175863A (en) * | 2021-04-20 | 2021-07-27 | 深圳市林上科技有限公司 | Iron powder doped putty layer identification method and paint film instrument |
Non-Patent Citations (4)
| Title |
|---|
| 北京市职工技术协会: "《涂装工实用技术问答》", 30 April 2004, 机械工业出版社 * |
| 李福志: "粉末涂料专用导电腻子的研制及应用", 《第六次全国环氧树脂应用技术学术交流会论文集》 * |
| 王翠苹 等: "金属电导率涡流测量新方法研究", 《2017远东无损检测新技术论坛论文集》 * |
| 陈永新 等: "DN-120导电腻子", 《杭州化工》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114088806B (en) | 2023-05-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4528856A (en) | Eddy current stress-strain gauge | |
| Yang et al. | Pulsed eddy-current measurement of a conducting coating on a magnetic metal plate | |
| US9213018B2 (en) | Partial saturation eddy current sensor apparatus and method of use | |
| CN113175863B (en) | Iron powder doped putty layer identification method and paint film instrument | |
| CN100386503C (en) | Method for testing a component in a non-destructive manner and for producing a gas turbine blade | |
| CN101131314B (en) | Nondestructive thickness measuring method for nickel coat on Fe substrate | |
| CN102171556B (en) | Method and system for non-destructive detection of coating errors | |
| US20090251137A1 (en) | Method for determining the layer thickness of an electrically conductive coating on an electrically conductive substrate | |
| US4881031A (en) | Eddy current method and apparatus for determining structural defects in a metal object without removing surface films or coatings | |
| CN101839888A (en) | Nondestructive detection method for detecting damage of metal material | |
| JPH0771905A (en) | Determination of thickness of ferromagnetic substance deposited on nuclear fuel rod | |
| US5391988A (en) | Method and apparatus for detecting flaws within a conductive object while cancelling the effects of variation in distance between the detection apparatus and the conductive object | |
| CN114088806B (en) | Metal putty recognition method, recognition device, electronic equipment and storage medium | |
| Standish et al. | The electrical properties of organic coatings on a local scale-relationship to corrosion | |
| CN114062440B (en) | Detection method and device for metal putty, electronic equipment and storage medium | |
| US20030034776A1 (en) | Method and facility for storing and indexing web browsing data | |
| US6411105B1 (en) | Nondestructive detection of steel surface corrosion | |
| US20110273171A1 (en) | Method and device for determining whether there is a change in a substrate beneath a layer covering the substrate | |
| Tai et al. | Modeling the surface condition of ferromagnetic metal by the swept-frequency eddy current method | |
| CN115523829A (en) | Welding seam eddy current detection feasibility evaluation method and detection device thereof | |
| JP3055375B2 (en) | Direction identification method for multilayer ceramic capacitors | |
| CN201527259U (en) | Surface-contact eddy current thickness measurement probe | |
| CN1975407A (en) | Method for nondestructive testing iron and steel material quality and equipment thereof | |
| CN111595232B (en) | Method and device for detecting thickness and conductivity of metal coating on surface of metal conductor | |
| CN116519747B (en) | Paint thickness calculation and substrate material identification method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |