CN114019347A - Circuit board magnetic field detection system and detection method - Google Patents
Circuit board magnetic field detection system and detection method Download PDFInfo
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- CN114019347A CN114019347A CN202111153387.0A CN202111153387A CN114019347A CN 114019347 A CN114019347 A CN 114019347A CN 202111153387 A CN202111153387 A CN 202111153387A CN 114019347 A CN114019347 A CN 114019347A
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- circuit board
- magnetic
- magnetic medium
- magnetic field
- induction container
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/281—Specific types of tests or tests for a specific type of fault, e.g. thermal mapping, shorts testing
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- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The invention discloses a circuit board magnetic field detection system and a detection method, and belongs to the technical field of circuit board detection. The circuit board magnetic field detection system includes: the magnetic induction container is connected with the workbench and contains magnetic media, the measuring device is arranged on one side of the magnetic induction container, the electrified circuit board is displaced towards the direction of the magnetic induction container in the working state, and the measuring device measures the distance between the circuit board and the magnetic media or measures whether the magnetic media are attracted. According to the invention, when the magnetic medium in the magnetic induction container is attracted by the circuit board, the distance between the circuit board and the magnetic medium is measured and recorded, the magnetic field influence range of the circuit board can be accurately measured, the magnetic field influence range which can be judged according to design experience is digitalized, and then a designer can perform optimized comparison analysis on the circuit board on the basis of the existing design, so that the equipment damage rate is reduced and the growth speed of the designer is accelerated.
Description
Technical Field
The invention belongs to the technical field of circuit board detection, and particularly relates to a circuit board magnetic field detection system and a circuit board magnetic field detection method.
Background
The design production process of the existing circuit board is to design and typeset the circuit after determining the quantity and the position of the input end and the output end of the circuit board according to the required functions of the equipment, then to detect the sample plate after manufacturing the sample plate to see whether the detection sample plate can realize the input, the output and the control of the preset current, finally to enter the production stage, but the circuit is complicated in the electrical box of the industrial equipment, so the requirements on the circuit board are not only the input, the output and the control of the preset current, but also the magnetic field can not influence other equipment in the electrical box, the prior art needs the designer to design and typeset the circuit board according to experience to reduce the interference of the magnetic field to the outside, but the designers with the capability are too rare and slow in growth, the equipment loss caused in the growth process is too large, which leads to the problem of high damage rate of the control electrical equipment of the existing equipment, therefore, it is desirable to provide a method for detecting the magnetic field of a circuit board, which can detect the magnetic field influence range of the circuit board, thereby reducing the equipment damage rate and increasing the growth speed of designers.
Disclosure of Invention
The purpose of the invention is as follows: a system and a method for detecting a magnetic field of a circuit board are provided to solve the above problems in the prior art.
The technical scheme is as follows: the circuit board magnetic field detection system includes: a work bench.
And a magnetic induction container connected to the table and containing a magnetic medium.
And the measuring device is arranged on one side of the magnetic induction container.
When the magnetic induction container is in a working state, the electrified circuit board displaces towards the direction of the magnetic induction container, and the measuring device measures the distance between the circuit board and the magnetic medium or measures whether the magnetic medium is attracted.
In a further embodiment, the magnetically inductive container comprises: and the shell is connected with the workbench.
And the cover plate is connected with the shell and is separated from the upper surface of the magnetic medium by a preset gap.
The measuring device is an optical sensor fixed on one side of the housing.
When the device is in a working state, the electrifying circuit board is placed on the cover board, the measuring device detects whether the upper surface of the magnetic medium changes or not, the cover board with a preset gap is arranged at the interval of the upper surface of the magnetic medium, the measuring device is designed to be an optical sensor, the non-contact measurement and the non-magnetic measurement of the measuring device can be used for avoiding the interference of the measuring device on the magnetic medium, the medium on the upper surface of the circuit board and the magnetic medium can be fixed through the preset gap of the cover board and the upper surface of the magnetic medium, the same measuring standard is further ensured, the queuing time and the labor cost are reduced simultaneously, and the measuring efficiency is improved.
In a further embodiment, the measuring device is a scale provided on a side wall of the magnetically sensitive container.
The upper part of the magnetic induction container is communicated with the outside.
When the magnetic induction container is in a working state, the electrified circuit board is accommodated in the magnetic induction container and is parallel to the upper surface of the magnetic medium, so that the electrified circuit board is displaced towards the upper surface of the magnetic medium, the graduated scale is drawn or scribed or attached on the side wall of the magnetic induction container, the upper part of the magnetic induction container is communicated with the outside, simple magnetic field detection equipment can be made at the minimum cost, and the magnetic field range of the circuit board is detected.
In a further embodiment, the measuring device comprises: the side wall of the ruler rod is provided with a graduated scale which is arranged on one side of the magnetic induction container.
And the clamping component is connected with the ruler rod and performs reciprocating displacement along the extension direction of the ruler rod.
When the magnetic tape is in a working state, the clamping assembly clamps the electrified circuit board and displaces towards the upper surface direction of the magnetic medium along the extension direction of the tape rod, and when the magnetic medium is attracted by the electrified circuit board, the distance between the circuit board and the magnetic medium is recorded.
In a further embodiment, the clamping assembly comprises: the sliding part is sleeved with the ruler rod.
And the clamp is connected with one side of the sliding piece close to the magnetic induction container.
And the locking piece is in threaded connection with the sliding piece.
When the magnetic medium is attracted by the electrified circuit board, the locking piece is abutted to the ruler rod, the circuit board is clamped through the clamping assembly, the ruler rod is assisted to reduce the labor intensity of workers, the distance between the electrified circuit board and the upper surface of the magnetic medium can be directly seen from the position of the clamping assembly on the ruler rod, the locking piece is abutted to the ruler rod when the magnetic medium is attracted by the electrified circuit board, the clamping assembly is timely fixed at one position, and the problem of untimely recording is avoided.
In a further embodiment, the circuit board magnetic field detection system further comprises: and the guide rail is arranged at the upper end of the side wall of the magnetic induction container and extends along the horizontal direction.
And the push plate is connected with the guide rail and is abutted against the upper surface of the magnetic medium.
When the magnetic induction container is in a working state, the push plate is displaced along the extension direction of the guide rail, the thickness of the magnetic medium after being pushed flat at each time can be fixed through the guide rail fixed at the upper end of the side wall of the magnetic induction container and the push plate connected with the guide rail, so that the measuring reference is ensured, and the measuring precision is improved.
In a further embodiment, the magnetic medium is in a powder or fluid state, wherein the use of the fluid magnetic medium is most preferable, and the fluid magnetic medium has the advantages of high stability, easy resetting and difficult residue on the side wall of the magnetic induction container, so that the detection device with long service life can be obtained.
In a further embodiment, a detection method based on a circuit board magnetic field detection system comprises the following steps: and S1, fixing the cover plate and the upper surface of the magnetic medium at a fixed distance, and placing at least one electrified circuit board on the cover plate.
S2, when the upper surface of the magnetic medium is attracted by the magnetic field of the electrified circuit board, the upper surface of the magnetic medium generates a bulge, and when the bulge is detected by the measuring device, the detected circuit board is judged to be unqualified.
In a further embodiment, a detection method based on a circuit board magnetic field detection system comprises the following steps: and S3, the worker holds the electrified circuit board in hand, so that the lower surface of the electrified circuit board is parallel to the upper surface of the magnetic medium, and then the worker displaces the electrified circuit board towards the upper surface of the magnetic medium.
And S4, in the process of displacement of the electrified circuit board, a worker observes whether the upper surface of the magnetic medium forms a bulge or not and simultaneously observes the position of the electrified circuit board which is flush with the graduated scale.
And S5, when the worker observes that the upper surface of the magnetic medium forms the bulge, stopping the displacement process of the electrified circuit board, and recording the distance between the circuit board and the magnetic medium.
Has the advantages that: the invention discloses a circuit board magnetic field detection system and a detection method, wherein a handheld electrified circuit board is displaced towards a magnetic induction container, a measuring device is used for measuring the distance between the circuit board and a magnetic medium or measuring whether the magnetic medium is attracted, and when the magnetic medium in the magnetic induction container is attracted by the circuit board, the distance between the circuit board and the magnetic medium is measured and recorded, so that the magnetic field influence range of the circuit board can be accurately measured, the magnetic field influence range which can be judged according to design experience is digitalized, and a designer can perform optimized contrastive analysis on the circuit board on the basis of the existing design, thereby reducing the equipment damage rate and accelerating the growth speed of the designer.
Drawings
Fig. 1 is a schematic view of an embodiment of the present invention having a cover plate.
FIG. 2 is a schematic view of an embodiment of the present invention in which the upper part is in communication with the outside.
FIG. 3 is a schematic diagram of an embodiment of the measuring device of the present invention including a clamping assembly.
The reference numerals shown in fig. 1 to 3 are: the device comprises a workbench 1, a magnetic induction container 2, a measuring device 3, a guide rail 4, a push plate 5, a shell 21, a cover plate 22, a ruler rod 31, a clamping assembly 32, a sliding part 321, a clamp 322 and a locking part 323.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.
The application discloses a circuit board magnetic field detection method capable of detecting the influence range of a circuit board magnetic field so as to reduce the equipment damage rate and accelerate the growth speed of a designer.
The detection system for the detection method comprises: a workbench 1, a magnetic induction container 2 and a measuring device 3.
The magnetic induction container 2 is connected with the workbench 1 and contains magnetic media, wherein the magnetic media are in powder or fluid shapes, the most preferable magnetic media are in fluid shapes, and the detection equipment with long service life can be obtained by utilizing the advantages that the fluid magnetic media have high stability, are easy to reset and are not easy to remain on the side wall of the magnetic induction container 2.
The measuring device 3 is arranged on the side of the magnetic induction container 2.
The working principle is as follows: in the working state, the electrified circuit board displaces towards the magnetic induction container 2, and the measuring device 3 measures the distance between the circuit board and the magnetic medium or measures whether the magnetic medium is attracted.
Through handheld circular telegram circuit board to the displacement of 2 directions of magnetic induction container, measuring device 3 measures the interval of circuit board and magnetic medium or measures whether magnetic medium is attracted, and when magnetic medium was attracted by the circuit board in magnetic induction container 2, measure and record circuit board and magnetic medium's interval, can accurately measure the magnetic field influence scope of circuit board, the magnetic field influence scope datamation that will just can judge according to the design experience, and then make the designer can optimize contrastive analysis to the circuit board on the basis of current design, and then reduce the equipment spoilage and accelerate designer's growth rate.
In a further embodiment, tens of integrated circuit designs of the same circuit can be generated during teaching, and if the distances between the circuit boards and the magnetic media are measured manually one by one, the problems of long queuing time and high labor cost exist.
In order to solve the above problem, the magnetically inductive container 2 includes: a housing 21 and a cover plate 22.
The case 21 is connected to the table 1, and the cover plate 22 is connected to the case 21 with a predetermined gap from the upper surface of the magnetic medium.
The measuring device 3 is an optical sensor fixed on one side of the housing 21, the measuring device 3 is a vision device in the embodiment shown in fig. 1, and the measuring device 3 can also be an optical grating with a measuring range flush with the upper surface of the magnetic medium, or a laser transmitter.
In the operating state, the power-on circuit board is placed on the cover plate 22, and the measuring device 3 detects whether the upper surface of the magnetic medium is changed.
The working principle is as follows: the detection method based on the circuit board magnetic field detection system comprises the following steps: s1, the cover 22 is fixed in distance from the top surface of the magnetic medium, and at least one power circuit board is placed on the cover 22.
S2, when the upper surface of the magnetic medium is attracted by the magnetic field of the electrified circuit board, the upper surface of the magnetic medium generates a bulge, and when the bulge is detected by the measuring device 3, the detected circuit board is judged to be unqualified.
Through the apron 22 that sets up magnetic medium's upper surface interval has predetermined clearance, and design measuring device 3 as optical sensor, can use measuring device 3's non-contact measurement and non-magnetic measurement to avoid measuring device 3 to magnetic medium's interference, through the predetermined clearance of the upper surface of apron 22 with magnetic medium, can fix the medium of circuit board and magnetic medium upper surface, and then guaranteed same measuring standard, queuing time and human cost have been reduced simultaneously, measurement of efficiency is improved.
In the present embodiment, the measuring device 3 is a scale provided on the side wall of the magnetic induction container 2, and the upper part of the magnetic induction container 2 communicates with the outside.
In the operating state, the energized circuit board is accommodated in the magnetic induction container 2 and is parallel to the upper surface of the magnetic medium, so that the energized circuit board is displaced in the direction of the upper surface of the magnetic medium.
The working principle is as follows: the detection method based on the circuit board magnetic field detection system comprises the following steps: and S3, the worker holds the electrified circuit board in hand, so that the lower surface of the electrified circuit board is parallel to the upper surface of the magnetic medium, and then the worker displaces the electrified circuit board towards the upper surface of the magnetic medium.
And S4, in the process of displacement of the electrified circuit board, a worker observes whether the upper surface of the magnetic medium forms a bulge or not and simultaneously observes the position of the electrified circuit board which is flush with the graduated scale.
And S5, when the worker observes that the upper surface of the magnetic medium forms the bulge, stopping the displacement process of the electrified circuit board, and recording the distance between the circuit board and the magnetic medium.
Through drawing or carving or laminating the scale at 2 lateral walls of magnetism sensing container to make the top of magnetism sensing container 2 and external intercommunication, can make simple and easy magnetic field check out test set with minimum cost, carry out the magnetic field scope to the circuit board and detect.
In a further embodiment, the circuit design process of the existing same device is designed by the same team, dozens of circuit boards are designed on one medium-sized device, if the magnetic field ranges of different circuit boards are tested manually one by one, the problems of low measurement efficiency and high labor cost exist, and the problems of low measurement precision and untimely recording caused by visual errors exist in a manual handheld mode.
In order to solve the above problem, the measuring device 3 includes: a blade 31 and a clamping assembly 32.
The side wall of the ruler rod 31 is provided with a graduated scale which is arranged at one side of the magnetic induction container 2.
The holding member 32 is connected to the blade 31 and is reciprocally displaced in the extending direction of the blade 31.
In the working state, the clamping assembly 32 clamps the electrified circuit board, and moves towards the upper surface direction of the magnetic medium along the extending direction of the ruler rod 31, and when the magnetic medium is attracted by the electrified circuit board, the distance between the circuit board and the magnetic medium is recorded.
In the present embodiment, the clamping assembly 32 includes: slider 321, clamp 322, and lock 323.
The sliding part 321 is sleeved with the rod 31, the clamp 322 is connected with one side of the sliding part 321 close to the magnetic induction container 2, and the locking part 323 is in threaded connection with the sliding part 321.
When the magnetic medium is attracted by the energized circuit board, the lock 323 abuts against the blade 31.
The preferred solution in this embodiment further includes that the zero degree line of the scale of the rod 31 is flush with the upper surface of the magnetic medium.
In order to avoid collision between the clamp 322 and the sidewall of the magnetic induction container 2, as shown in fig. 3, it is necessary to control the distance between the upper surface of the magnetic medium and the upper surface of the magnetic induction container 2 within a predetermined range, and most preferably, to make the upper surface of the magnetic medium flush with the upper surface of the magnetic induction container 2, in this embodiment, the guide rail 4 is disposed at the upper end of the sidewall of the outside of the magnetic induction container 2, the guide rail 4 does not penetrate through the sidewall of the magnetic induction container 2, the leveling plate 5 is in an inverted concave shape, and the inner ends thereof are in a plug-in fit with the guide rail 4, so that the leveling plate 5 does not penetrate through the sidewall of the magnetic induction container 2, and the upper surface of the magnetic medium can be leveled by using the leveling plate 5 without lowering the height of the upper surface of the magnetic medium in the magnetic induction container 2, and while avoiding leakage of the magnetic medium.
This embodiment can also be combined with the cover plate embodiment, in which a cover plate with an area smaller than half of the area of the top end of the magnetic induction container 2 is installed on the top end of the magnetic induction container 2, half is used for fixed distance detection, and the other half is used for distance detection of the magnetic field range.
In the embodiment shown in fig. 3, the measuring device 3 is an optimized measuring device 3 manufactured on the basis of a vernier caliper in a development stage, the clamp 322 is a spring clamp connected to an end of the sliding member 321, the locking member 323 is a locking screw screwed with the sliding member 321, and the sliding member 321 may be further provided with an electronic counter to improve the measurement accuracy.
In a further embodiment, a scraper is required to be used for leveling the upper surface of the magnetic medium when measuring one circuit board, and the thickness of the magnetic medium is changed when the scraper is separated from the magnetic induction container 2 and different people perform leveling operation, so that the measurement accuracy is reduced.
In order to solve the above problem, the circuit board magnetic field detection system further includes: a guide rail 4 and a push plate 5.
The guide rail 4 is arranged at the upper end of the side wall of the magnetic induction container 2, extends along the horizontal direction, and the push flat plate 5 is connected with the guide rail 4 and is abutted against the upper surface of the magnetic medium.
In the operating state, the push plate 5 is displaced in the extension direction of the guide rail 4.
In the embodiment shown in fig. 1 and 2, the guide rail 4 is a kidney-shaped through groove arranged at the upper end of the side wall of the magnetic induction container 2, the push flat plate 5 is accommodated in the magnetic induction container 2, two ends of the push flat plate are inserted into the guide rail 4, and the bottom end of the push flat plate is abutted to the upper surface of the magnetic medium.
Through fixing at the guide rail 4 of the lateral wall upper end of magnetic induction container 2 to and push away dull and stereotyped 5 with being connected of guide rail 4, can fix and push away the magnetic medium thickness of flat back at every turn, and then guarantee the measuring basis, improve measurement accuracy.
In the above embodiment, the magnetic induction container 2 is made of a non-magnetic transparent material such as a transparent acrylic material, a transparent plastic material, or a transparent quartz glass material, so as to ensure that the optical sensor or the worker can see the state and shape of the magnetic medium from the outside of the magnetic induction container 2.
As noted above, while the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. Circuit board magnetic field detecting system, its characterized in that includes:
a working table is arranged on the upper portion of the machine body,
a magnetic induction container connected with the worktable and accommodating a magnetic medium;
the measuring device is arranged on one side of the magnetic induction container;
when the magnetic induction container is in a working state, the electrified circuit board displaces towards the direction of the magnetic induction container, and the measuring device measures the distance between the circuit board and the magnetic medium or measures whether the magnetic medium is attracted.
2. The circuit board magnetic field detection system of claim 1,
the magnetically inductive container includes:
the shell is connected with the workbench;
the cover plate is connected with the shell and is separated from the upper surface of the magnetic medium by a preset gap;
the measuring device is an optical sensor fixed on one side of the shell;
in an operating state, the energizing circuit board is placed on the cover plate, and the measuring device detects whether the upper surface of the magnetic medium is changed.
3. The circuit board magnetic field detection system of claim 1,
the measuring device is a graduated scale arranged on the side wall of the magnetic induction container;
the upper part of the magnetic induction container is communicated with the outside;
when the magnetic induction container is in a working state, the electrified circuit board is accommodated in the magnetic induction container and is parallel to the upper surface of the magnetic medium, so that the electrified circuit board is displaced towards the upper surface of the magnetic medium.
4. The circuit board magnetic field detection system of claim 1,
the measuring device includes:
the side wall of the ruler rod is provided with a graduated scale which is arranged on one side of the magnetic induction container;
the clamping assembly is connected with the ruler rod and performs reciprocating displacement along the extension direction of the ruler rod;
when the magnetic tape is in a working state, the clamping assembly clamps the electrified circuit board and displaces towards the upper surface direction of the magnetic medium along the extension direction of the tape rod, and when the magnetic medium is attracted by the electrified circuit board, the distance between the circuit board and the magnetic medium is recorded.
5. The circuit board magnetic field detection system of claim 4,
the clamping assembly comprises:
the sliding part is sleeved with the ruler rod;
the clamp is connected with one side of the sliding piece, which is close to the magnetic induction container;
the locking piece is in threaded connection with the sliding piece;
when the magnetic medium is attracted by the electrified circuit board, the locking piece is abutted with the ruler rod.
6. The circuit board magnetic field detection system of claim 1, further comprising:
the guide rail is arranged at the upper end of the side wall of the magnetic induction container and extends along the horizontal direction;
the push plate is connected with the guide rail and is abutted against the upper surface of the magnetic medium;
in the working state, the push plate is displaced along the extending direction of the guide rail.
7. The circuit board magnetic field detection system of claim 1, wherein the magnetic medium is in a powder or fluid form.
8. The detection method of the circuit board magnetic field detection system based on claim 2 is characterized by comprising the following steps:
s1, fixing the cover plate and the upper surface of the magnetic medium at a certain distance, and placing at least one electrified circuit board on the cover plate;
s2, when the upper surface of the magnetic medium is attracted by the magnetic field of the electrified circuit board, the upper surface of the magnetic medium generates a bulge, and when the bulge is detected by the measuring device, the detected circuit board is judged to be unqualified.
9. The detection method of the circuit board magnetic field detection system based on claim 3, characterized by comprising the following steps:
s3, the worker holds the electrified circuit board in hand, so that the lower surface of the electrified circuit board is parallel to the upper surface of the magnetic medium, and then the worker displaces the electrified circuit board towards the upper surface of the magnetic medium;
s4, in the process of displacement of the electrified circuit board, a worker observes whether the upper surface of the magnetic medium forms a bulge or not and observes the position of the electrified circuit board which is flush with the graduated scale;
and S5, when the worker observes that the upper surface of the magnetic medium forms the bulge, stopping the displacement process of the electrified circuit board, and recording the distance between the circuit board and the magnetic medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111153387.0A CN114019347A (en) | 2021-09-29 | 2021-09-29 | Circuit board magnetic field detection system and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111153387.0A CN114019347A (en) | 2021-09-29 | 2021-09-29 | Circuit board magnetic field detection system and detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114019347A true CN114019347A (en) | 2022-02-08 |
Family
ID=80055164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111153387.0A Withdrawn CN114019347A (en) | 2021-09-29 | 2021-09-29 | Circuit board magnetic field detection system and detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114019347A (en) |
-
2021
- 2021-09-29 CN CN202111153387.0A patent/CN114019347A/en not_active Withdrawn
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Application publication date: 20220208 |