CN114885491B - Method, device, equipment and medium for determining PCB and shielding device - Google Patents
Method, device, equipment and medium for determining PCB and shielding device Download PDFInfo
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- CN114885491B CN114885491B CN202210469670.2A CN202210469670A CN114885491B CN 114885491 B CN114885491 B CN 114885491B CN 202210469670 A CN202210469670 A CN 202210469670A CN 114885491 B CN114885491 B CN 114885491B
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000004590 computer program Methods 0.000 claims description 12
- 239000003990 capacitor Substances 0.000 claims description 6
- 230000000873 masking effect Effects 0.000 claims description 3
- 239000010410 layer Substances 0.000 claims 8
- 239000011229 interlayer Substances 0.000 claims 1
- 230000002238 attenuated effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 238000012545 processing Methods 0.000 description 8
- 230000005855 radiation Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
- 229920005591 polysilicon Polymers 0.000 description 3
- 238000013473 artificial intelligence Methods 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
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- 238000001914 filtration Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000010801 machine learning Methods 0.000 description 1
- 230000005055 memory storage Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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- 238000001020 plasma etching Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
- H05K1/023—Reduction of cross-talk, noise or electromagnetic interference using auxiliary mounted passive components or auxiliary substances
- H05K1/0231—Capacitors or dielectric substances
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
- H05K1/023—Reduction of cross-talk, noise or electromagnetic interference using auxiliary mounted passive components or auxiliary substances
- H05K1/0234—Resistors or by disposing resistive or lossy substances in or near power planes
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0005—Apparatus or processes for manufacturing printed circuits for designing circuits by computer
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The application discloses a method, a device, equipment and a medium for determining a PCB and a shielding device, and relates to the technical field of electromagnetism. The PCB includes: a signal layer, at least two reference layers, and a shielding device. The first end of the shielding device is connected with one reference layer, the second end of the shielding device is connected with the other reference layer, the reference layers are mutually independent, and the shielding device is insulated from the signal layer. Because the shielding device is connected with the two reference layers, when electromagnetic signals are transmitted in the signal layer, larger induced current is generated when the electromagnetic signals penetrate into the shielding device, and the induced current is continuously attenuated through a loop formed by the two reference layers and the shielding device until the attenuation is zero. Therefore, shielding of electromagnetic signals is achieved, and the situation that electromagnetic signals are transmitted in error and the transmitted electromagnetic signals are distorted due to the fact that the electromagnetic signals pass through a shielding device to generate electromagnetic signals to reflect back is avoided.
Description
Technical Field
The present disclosure relates to the field of electromagnetic technologies, and in particular, to a method, an apparatus, a device, and a medium for determining a PCB and a shielding device.
Background
With the rapid development of science and technology, electronic devices are required to have high performance and high operation speed. When the performance of the electronic device is high and the operation speed is high, the transmission rate of the electromagnetic signal of the electronic device needs to be correspondingly increased so as to meet the requirement of transmitting larger data volume. At this time, because the routing of the electromagnetic signals is not ideal, unavoidable radiation problems occur. Typically, the electromagnetic signal is referenced to ground for shielding, thereby avoiding radiation problems. But as electronic devices become more powerful, the area they can be designed to become smaller. Due to the area or layout limitations of the PCB board, the electromagnetic signals need to be crossed over different reference layers, as shown in fig. 1.
In order to reduce the influence of radiation problems, it is known to pass electromagnetic signals through magnetic beads arranged on the transmission path of the electromagnetic signals or to filter the electromagnetic signals capacitively. However, when capacitive filtering is performed, strong attenuation is generated on electromagnetic signals, inductive reactance is easy to generate, and the electromagnetic signals are greatly distorted and deformed; when radiation is reduced, electromagnetic signals can generate impedance mismatch when passing through the magnetic beads, so that electromagnetic signals are reflected and returned, and the problem of electromagnetic signal error transmission occurs.
In view of the above-mentioned problems, it is a problem to be solved by a person skilled in the art to find that electromagnetic signals can be transmitted correctly and that the electromagnetic signals obtained by transmission are not distorted.
Disclosure of Invention
The invention aims to provide a method, a device, equipment and a medium for determining a PCB (printed Circuit Board) and a shielding device, which are used for correctly transmitting electromagnetic signals and enabling the electromagnetic signals obtained by transmission to be undistorted.
In order to solve the above technical problem, the present application provides a PCB, including: a signal layer, at least two reference layers, a shielding device;
the first end of the shielding device is connected with one reference layer, the second end of the shielding device is connected with the other reference layer, the reference layers are mutually independent, and the shielding device is insulated from the signal layer.
Preferably, the shielding device is a resistor or a capacitor.
Preferably, the number of the shielding devices is a plurality.
Preferably, the method further comprises: at least two VIA holes, one VIA hole is disposed at a first end of the shielding device and the other VIA hole is disposed at a second end of the shielding device.
In order to solve the above technical problems, the present application provides a method for determining a shielding device, which is applied to the PCB, and the method includes:
acquiring a preset clock rate of an electromagnetic signal;
determining the wavelength of the electromagnetic signal according to the preset clock rate;
and determining a shielding gap according to the wavelength, and setting the distance between shielding devices according to the shielding gap.
Preferably, said determining a shielding slit according to said wavelength comprises:
determining a shielding wavelength value according to the wavelength, wherein the shielding wavelength value is one tenth of the wavelength;
and determining the shielding wavelength value as the shielding gap.
Preferably, the distance between the shielding devices is not greater than the shielding slit.
In order to solve the above technical problem, the present application further provides a device for determining a shielding device, where the PCB includes:
the acquisition module is used for acquiring a preset clock rate of the electromagnetic signal;
the first determining module is used for determining the wavelength of the electromagnetic signal according to the preset clock rate;
and the second determining module is used for determining a shielding gap according to the wavelength and setting the distance between shielding devices according to the shielding gap.
In order to solve the above technical problem, the present application further provides a determination device for a shielding device, including:
a memory for storing a computer program;
and the processor is used for pointing to a computer program and realizing the steps of the method for determining the shielding device.
In order to solve the above technical problem, the present application further provides a computer readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the steps of the method for determining all the shielding devices are implemented.
The application provides a PCB, includes: a signal layer, at least two reference layers, and a shielding device. The first end of the shielding device is connected with one reference layer, the second end of the shielding device is connected with the other reference layer, the reference layers are mutually independent, and the shielding device is insulated from the signal layer. Because the shielding device is connected with the two reference layers, when electromagnetic signals are transmitted in the signal layer, larger induced current is generated when the electromagnetic signals penetrate into the shielding device, and the induced current is continuously attenuated through a loop formed by the two reference layers and the shielding device until the attenuation is zero. Therefore, shielding of electromagnetic signals is achieved, and the situation that electromagnetic signals are transmitted in error and the transmitted electromagnetic signals are distorted due to the fact that the electromagnetic signals pass through a shielding device to generate electromagnetic signals to reflect back is avoided.
The application also provides a method for determining the shielding device, a device for determining the shielding device and a computer readable storage medium, which are applied to the device for determining the shielding device, and have the same effects.
Drawings
For a clearer description of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described, it being apparent that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a structural diagram of a PCB according to an embodiment of the present application;
fig. 2 is a block diagram of another PCB according to an embodiment of the present application;
fig. 3 is a flowchart of a method for determining a shielding device according to an embodiment of the present application;
fig. 4 is a structural diagram of a determining device of a shielding device according to an embodiment of the present application;
fig. 5 is a block diagram of a determining device of a shielding device according to an embodiment of the present application.
Wherein 10 is a signal layer, 11 is a reference layer, 12 is a shielding device, and 20 is a VIA hole.
Detailed Description
The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments herein without making any inventive effort are intended to fall within the scope of the present application.
The core of the application is to provide a method, a device, equipment and a medium for determining a PCB and a shielding device, which can correctly transmit electromagnetic signals and the electromagnetic signals obtained by transmission are not distorted.
In order to provide a better understanding of the present application, those skilled in the art will now make further details of the present application with reference to the drawings and detailed description.
From the above, it is clear that when the routing of the electromagnetic signal is not ideal and the radiation problem occurs, the result obtained after the test is not two kinds. Firstly, the radiation test margin is insufficient; second, the radiation exceeds the standard. Both of these conditions can result in the inability of the article to be marketed. Even if the product is on the standard edge and can be marketed, the product has very large potential safety hazards and legal risks. Accordingly, to avoid such a situation, the present application provides a PCB. Fig. 1 is a structural diagram of a PCB according to an embodiment of the present application. As shown in fig. 1, the PCB includes: a signal layer 10, at least two reference layers 11, a shielding device 12.
The first end of the shielding device 12 is connected to one reference layer 11, the second end of the shielding device 12 is connected to the other reference layer 11, the reference layers 11 are independent of each other, and the shielding device 12 is insulated from the signal layer 10.
In this embodiment, the number of the signal layers 10, the number of the shielding devices 12, and the types of the shielding devices 12 are not limited, and the number of the reference layers must be two or more in consideration of the fact that the radiation is generated due to the antenna effect caused by the change of the reference system of the trace caused by the change of the trace after crossing the reference layer. Wherein the reference layers 11 are required to be insulated from each other, thereby ensuring the accuracy of the transmission signal. In addition, the antenna effect is a conductor such as exposed metal wire or polysilicon (polysilicon) during the chip production process, and can be regarded as an antenna. Where charge (e.g., charged particles generated by plasma etching) is collected, resulting in an increase in potential. The longer the antenna, the more charge is collected and the higher the voltage. If the metal wire or the conductor such as polysilicon is connected with the gate of the MOS transistor only, the generated high voltage may break down the thin gate oxide layer, and the circuit may fail. With the development of process technology, the size of the gate is smaller, the number of layers of metal is larger, and the possibility of antenna effect is gradually increased. It can be understood that the PCB provided by the present application may be externally connected to a MOS transistor and provided with a plurality of reference layers and signal layers, so that the situation that the above antenna effect occurs completely exists.
Since the shielding device 12 is connected to the two reference layers 11, when the electromagnetic signal is transmitted through the signal layer 10, a large induced current is generated when the electromagnetic signal penetrates into the shielding device 12, and the induced current is continuously attenuated by the loop formed by the two reference layers 11 and the shielding device 12 until the attenuation is zero. Shielding of electromagnetic signals is achieved, and further the situation that electromagnetic signals are transmitted in error and the transmitted electromagnetic signals are distorted due to the fact that electromagnetic signals pass through the shielding device 12 to generate electromagnetic signals to reflect back is avoided.
Based on the above embodiment, as a preferred embodiment, the shielding device 12 is a resistor or a capacitor. In this embodiment, the type of shielding device is defined as a resistor or a capacitor. When the shielding device is a resistor, a resistor with a smaller resistance value can be selected. As a more preferable scheme, the magnitude of the resistance value can be determined according to the specific implementation scene in consideration of the quality of the shielding effect.
On the basis of the above embodiment, as a more preferable embodiment, the number of shielding devices 12 is plural. Considering that the shielding effect of one shielding device is far from being satisfactory, a plurality of shielding devices need to be provided. That is, a plurality of resistors or a plurality of capacitors may be provided, or a combination of resistors and capacitors may be used, and the manner of using the shielding device is not limited in this embodiment, and the implementation thereof may be determined according to the specific implementation scenario.
Fig. 2 is a block diagram of another PCB according to an embodiment of the present application. Considering that the shielding device needs to be disposed across the transmission path of the electromagnetic signal on the PCB, as a preferred embodiment, as shown in fig. 2, further includes: at least two VIA holes 20, one VIA hole 20 being disposed at a first end of the shielding device 12 and the other VIA hole 20 being disposed at a second end of the shielding device 12. In this embodiment, the VIA holes 20 may be provided on both the left and right sides of the shielding device 12, but such an arrangement is disadvantageous for layout wiring on a PCB. The arrangement of VIA holes 20 is more prone to placement at both the upper and lower ends of shield 12, facilitating placement and routing.
Fig. 3 is a flowchart of a method for determining a shielding device according to an embodiment of the present application. On the basis of the above embodiment, the present application further provides a method for determining a shielding device, which is applied to the above-mentioned PCB, as shown in fig. 3, and includes:
s30: a preset clock rate of the electromagnetic signal is obtained.
In practical production applications, the electromagnetic signal may be high-low level or may be a data string of digital signals, such as "00101101"; it should be noted that the above-mentioned data string is only one of many embodiments, and may be 4 bits, 8 bits, 16 bits, etc., and the above-mentioned data string is not limited.
S31: the wavelength of the electromagnetic signal is determined according to a preset clock rate.
Further, the preset clock rate is 1000MHz as an example.
When the preset clock rate is 1000MHz, the wavelength of the electromagnetic signal can be obtained by the formula λ=v/F. Where λ is the wavelength of the electromagnetic signal, F is a preset clock rate, and V is the propagation rate of the electromagnetic signal, typically the speed of light. The above data is taken into the formula λ=v/F, resulting in an electromagnetic signal with a wavelength of 30cm.
S32: and determining a shielding gap according to the wavelength, and setting the distance between shielding devices according to the shielding gap.
Also taking the above-mentioned preset clock rate of 1000MHz as an example. The wavelength of the electromagnetic signal obtained above was 30cm. The wavelength is determined to be a shielding slit and a shielding device is arranged every 30cm. However, this arrangement may result in poor shielding. Therefore, it is further necessary to provide a shielding slit determined according to the wavelength on the basis of the above embodiment.
On the basis of the above embodiment, as a more preferable embodiment, determining the shielding slit according to the wavelength includes:
and determining a shielding wavelength value according to the wavelength, wherein the shielding wavelength value is one tenth of the wavelength.
The masking wavelength value is determined as a masking gap.
The preset clock rate is always taken as 1000 MHz. In the above embodiment, the wavelength is determined to be a shielding slit, and a shielding device is provided every 30cm. In view of the poor shielding effect of such a setting, one tenth of the wavelength is set as the shielding wavelength value. At this time, a shielding device was provided every 3cm of shielding slit. Thereby realizing better shielding effect. It will be appreciated that the distance between the shielding devices is not greater than the shielding gap. When the shielding slit is 3cm, the distance between the shielding devices may be any distance between 0 and 3 cm. In the present embodiment, the specific value of the distance between the shielding devices is not limited, and it is only required that the distance between the shielding devices may be between 0 and 3 cm. The specific value of the distance between the shielding devices may determine its distance according to the specific implementation scenario.
In the above embodiments, the detailed description is given of the method for determining the shielding device, and the application also provides the corresponding embodiment of the device for determining the shielding device. Fig. 4 is a structural diagram of a determining device of a shielding device according to an embodiment of the present application. As shown in fig. 4, the present application further provides a determining apparatus of a shielding device, which is applied to the above-mentioned PCB, and includes:
an acquisition module 40, configured to acquire a preset clock rate of the electromagnetic signal;
a first determining module 41, configured to determine a wavelength of the electromagnetic signal according to the preset clock rate;
a second determining module 42 is configured to determine a shielding slit according to the wavelength, and set a distance between shielding devices according to the shielding slit.
Since the embodiments of the apparatus portion and the embodiments of the method portion correspond to each other, the embodiments of the apparatus portion are referred to the description of the embodiments of the method portion, and are not repeated herein.
Fig. 5 is a block diagram of a determining device for a shielding device provided in an embodiment of the present application, and as shown in fig. 5, the present application further provides a determining device for a shielding device, including:
a memory 50 for storing a computer program;
a processor 51 for carrying out the steps of the method of determining the shielding device as mentioned in the above embodiments when executing said computer program.
The determination device of the shielding device provided in this embodiment may include, but is not limited to, a smart phone, a tablet computer, a notebook computer, a desktop computer, or the like.
Processor 51 may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor 51 may be implemented in at least one hardware form of digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate Array, FPGA), programmable logic array (Programmable Logic Array, PLA). The processor 51 may also include a main processor, which is a processor for processing data in an awake state, also referred to as a central processor (Central Processing Unit, CPU), and a coprocessor; a coprocessor is a low-power processor for processing data in a standby state. In some embodiments, the processor 51 may be integrated with an image processor (Graphics Processing Unit, GPU) for taking care of rendering and rendering of the content that the display screen is required to display. In some embodiments, the processor 51 may also include an artificial intelligence (Artificial Intelligence, AI) processor for processing computing operations related to machine learning.
Memory 50 may include one or more computer-readable storage media, which may be non-transitory. Memory 50 may also include high-speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In this embodiment, the memory 50 is at least used for storing a computer program, wherein the computer program, when loaded and executed by the processor 51, is capable of implementing the relevant steps of the method for determining a shielding device disclosed in any of the foregoing embodiments. In addition, the resources stored in the memory 50 may also include an operating system, data, etc., and the storage manner may be transient storage or permanent storage. The operating system may include Windows, unix, linux, among others.
In some embodiments, the determination device of the shielding device may further include a display screen, an input-output interface, a communication interface, a power supply, and a communication bus.
It will be appreciated by those skilled in the art that the structure shown in fig. 5 does not constitute a limitation of the determination device of the shielding device and may include more or less components than illustrated.
The device for determining the shielding device provided by the embodiment of the application comprises a memory 50 and a processor 51, wherein the processor 51 can realize the method for determining the shielding device when executing a program stored in the memory 50.
Finally, the present application also provides a corresponding embodiment of the computer readable storage medium. The computer-readable storage medium has stored thereon a computer program which, when executed by a processor, performs the steps as described in the method embodiments above.
It will be appreciated that the methods of the above embodiments, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored on a computer readable storage medium. With such understanding, the technical solution of the present application, or a part contributing to the prior art or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium, performing all or part of the steps of the method described in the various embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The method, the device, the equipment and the medium for determining the PCB and the shielding device provided by the application are described in detail. In the description, each embodiment is described in a progressive manner, and each embodiment is mainly described by the differences from other embodiments, so that the same similar parts among the embodiments are mutually referred. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section. It should be noted that it would be obvious to those skilled in the art that various improvements and modifications can be made to the present application without departing from the principles of the present application, and such improvements and modifications fall within the scope of the claims of the present application.
It should also be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Claims (8)
1. A PCB, comprising: a signal layer (10), at least two reference layers (11), a shielding device (12);
the first end of the shielding device (12) is connected with one reference layer (11), the second end of the shielding device (12) is connected with the other reference layer (11), the reference layers (11) are independent, and the shielding device (12) is insulated from the signal layer (10);
wherein the signal layer is positioned in the middle interlayer position of the shielding device and the reference layer, and the shielding device (12) is a resistor or a capacitor;
correspondingly, the PCB further comprises: further comprises: at least two VIA holes (20), one VIA hole (20) being provided at a first end of the shielding device (12) and the other VIA hole (20) being provided at a second end of the shielding device (12).
2. The PCB of claim 1, wherein the number of shielding devices (12) is a plurality.
3. A method of determining a shielding device, applied to the PCB of claim 1 or 2, the method comprising:
acquiring a preset clock rate of an electromagnetic signal;
determining the wavelength of the electromagnetic signal according to the preset clock rate;
and determining a shielding gap according to the wavelength, and setting the distance between shielding devices according to the shielding gap.
4. A method of determining a shielding device according to claim 3, wherein said determining a shielding slit according to said wavelength comprises:
determining a shielding wavelength value according to the wavelength, wherein the shielding wavelength value is one tenth of the wavelength;
and determining the shielding wavelength value as the shielding gap.
5. The method of determining shielding devices according to claim 4, wherein a distance between the shielding devices is not greater than the shielding slit.
6. A shielding device determining apparatus, applied to the PCB of claim 1 or 2, comprising:
the acquisition module is used for acquiring a preset clock rate of the electromagnetic signal;
the first determining module is used for determining the wavelength of the electromagnetic signal according to the preset clock rate;
and the second determining module is used for determining a shielding gap according to the wavelength and setting the distance between shielding devices according to the shielding gap.
7. A determination apparatus of a shielding device, characterized by comprising:
a memory for storing a computer program;
processor for implementing the steps of the method for determining a shielding device according to any of claims 3 to 5 when executing said computer program.
8. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the method of determining a masking device according to any of claims 3 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210469670.2A CN114885491B (en) | 2022-04-30 | 2022-04-30 | Method, device, equipment and medium for determining PCB and shielding device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210469670.2A CN114885491B (en) | 2022-04-30 | 2022-04-30 | Method, device, equipment and medium for determining PCB and shielding device |
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| CN114885491A CN114885491A (en) | 2022-08-09 |
| CN114885491B true CN114885491B (en) | 2023-08-04 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106535472A (en) * | 2017-01-12 | 2017-03-22 | 郑州云海信息技术有限公司 | PCB and signal transmission system |
| CN212183803U (en) * | 2020-03-31 | 2020-12-18 | 联想(北京)有限公司 | Printed circuit board |
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- 2022-04-30 CN CN202210469670.2A patent/CN114885491B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106535472A (en) * | 2017-01-12 | 2017-03-22 | 郑州云海信息技术有限公司 | PCB and signal transmission system |
| CN212183803U (en) * | 2020-03-31 | 2020-12-18 | 联想(北京)有限公司 | Printed circuit board |
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| CN114885491A (en) | 2022-08-09 |
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