WO2023103678A1 - Clock signal circuit design method and apparatus, storage medium and electronic device - Google Patents

Abstract

The present application relates to the technical field of computers. Disclosed are a clock signal circuit design method and apparatus, a storage medium and an electronic device. The method comprises: obtaining three-dimensional models of a circuit board; generating electromagnetic interference simulation models; performing electromagnetic interference simulation processing based on the electromagnetic interference simulation models to obtain electromagnetic interference data; and comparing the electromagnetic interference data to determine a target bridging strategy for signal return ground holes. The present application can improve the design efficiency of clock signal circuits in circuit boards.

Description

Clock signal circuit design method, device, storage medium and electronic equipment technical field

The present application relates to the field of computer technology, in particular to a clock signal circuit design method, device, storage medium and electronic equipment.

Background technique

The clock signal circuit is the circuit trace that transmits the clock signal in the circuit board (PCB), and the clock signal circuit is very critical in the circuit board. The clock signal circuit usually needs to arrange the return ground hole to bridge the signal return path. The arrangement of the return ground hole is of great significance to the overall performance of the circuit board, especially when the clock signal circuit switches the reference layer, it has an important impact on the electromagnetic radiation of the circuit board.

technical problem

At present, the design of the return ground hole in the clock signal circuit is usually a sample of the prefabricated circuit board entity, and the trial-and-error design is carried out through continuous experimental testing and continuous adjustment of the bridging strategy of the return ground hole. This method has the problem of low design efficiency.

technical solution

The embodiment of the present application provides a solution, which can reliably improve the design efficiency of the clock signal circuit in the circuit board.

The embodiment of the present application provides the following technical solutions:

According to an embodiment of the present application, a method for designing a clock signal circuit includes: obtaining multiple three-dimensional models of a circuit board, each of the three-dimensional models setting a signal return ground hole for a clock signal circuit according to a specific bridging strategy, The clock signal circuit switches the reference layer; performs scattering parameter simulation processing on each of the three-dimensional models within the frequency range of the target signal, and generates an electromagnetic interference simulation model corresponding to each of the three-dimensional models; based on each of the electromagnetic interference simulation The model performs electromagnetic interference simulation processing to obtain the electromagnetic interference data corresponding to each of the three-dimensional models; compare the electromagnetic interference data corresponding to each of the three-dimensional models to determine the target bridging strategy of the signal backflow hole, and the target bridging strategy uses The signal return ground hole is arranged in the circuit board.

In some embodiments of the present application, the electromagnetic interference data includes electromagnetic energy leakage and electromagnetic radiation intensity; comparing the electromagnetic interference information corresponding to each of the three-dimensional models to determine the target bridging strategy of the signal backflow ground hole , comprising: comparing the amount of electromagnetic energy leakage and the intensity of electromagnetic radiation corresponding to each of the three-dimensional models to obtain a target three-dimensional model among the plurality of three-dimensional models, the amount of electromagnetic energy leakage corresponding to the target three-dimensional model is the smallest and the intensity of electromagnetic radiation is Lowest; determine the specific bridging strategy corresponding to the signal return ground hole in the target three-dimensional model as the target bridging strategy of the signal return ground hole.

In some embodiments of the present application, the method further includes: acquiring layout data of forward signal vias of the clock signal circuit in the circuit board and structural data of the circuit board; based on the layout data and Perform clock signal return analysis on the structural data to predict a plurality of predicted bridging information of the signal return hole of the clock signal circuit; according to each of the predicted bridging information, generate the signals in each of the three-dimensional models respectively Said specific bridging strategy for backflow holes.

In some embodiments of the present application, the method further includes: acquiring the layout data of the forward signal vias of the clock signal circuit in the circuit board, the structural data of the circuit board, and the signal vias of other signal circuits. Hole setup data; clock signal reflow analysis is performed based on the layout data, the structure data and the setup data, so as to predict a plurality of predicted bridging information of the signal reflow ground holes of the clock signal circuit; according to each of the Bridging information is predicted, and the specific bridging strategy of the signal return ground hole in each of the three-dimensional models is respectively generated.

In some embodiments of the present application, after performing the scattering parameter simulation processing on each of the three-dimensional models within the frequency range of the target signal, the method further includes: extracting the scattering parameters corresponding to each of the three-dimensional models; The comparison of the electromagnetic energy leakage and electromagnetic radiation intensity corresponding to each of the three-dimensional models includes: determining the target signal frequency according to the scattering parameters corresponding to each of the three-dimensional models; The amount of electromagnetic energy leakage at the frequency and the intensity of electromagnetic radiation.

In some embodiments of the present application, performing the clock signal reflow analysis based on the layout data and the structure data to predict a plurality of predicted bridging information of signal return ground holes of the clock signal circuit includes: adopting the first A reflow analysis model, which performs clock signal reflow analysis based on the layout data and the structure data, and obtains a plurality of predicted bridging information of signal reflow ground holes of the clock signal circuit predicted by the first reflow analysis model.

In some embodiments of the present application, the clock signal reflow analysis is performed based on the arrangement data, the structure data and the setting data, so as to predict a plurality of predicted bridging information of the signal return ground holes of the clock signal circuit , comprising: using a second reflow analysis model to perform clock signal reflow analysis based on the layout data, the structure data, and the setting data, to obtain the signal reflow ground of the clock signal circuit predicted by the second reflow analysis model Multiple predicted bridging information for holes.

According to an embodiment of the present application, a device for designing a clock signal circuit includes: an acquisition module configured to acquire a plurality of three-dimensional models of a circuit board, and each of the three-dimensional models is respectively set according to a specific bridging strategy for the clock signal circuit The signal returns to the ground hole; the scattering simulation module is used to perform scattering parameter simulation processing on each of the three-dimensional models within the target signal frequency range, and generates an electromagnetic interference simulation model corresponding to each of the three-dimensional models; the electromagnetic simulation module is used for Perform electromagnetic interference simulation processing based on each of the electromagnetic interference simulation models to obtain electromagnetic interference data corresponding to each of the three-dimensional models; a comparison module is used to compare the electromagnetic interference data corresponding to each of the three-dimensional models to determine the signal backflow A target bridging strategy of the ground hole, the target bridging strategy is used to arrange the signal return ground hole in the circuit board.

According to another embodiment of the present application, a storage medium stores a computer program thereon, and when the computer program is executed by a processor of a computer, the computer executes the method described in the embodiment of the present application.

According to another embodiment of the present application, an electronic device may include: a memory storing a computer program; a processor reading the computer program stored in the memory to execute the method described in the embodiment of the present application.

Beneficial effect

In the embodiment of the present application, a plurality of three-dimensional models of the circuit board are obtained, and in each of the three-dimensional models, the signal return holes of the clock signal circuit are respectively set according to a specific bridging strategy, and the clock signal circuit switches the reference layer; at the target signal frequency Perform scattering parameter simulation processing on each of the three-dimensional models within a certain range to generate an electromagnetic interference simulation model corresponding to each of the three-dimensional models; perform electromagnetic interference simulation processing based on each of the electromagnetic interference simulation models to obtain each of the three-dimensional The model corresponds to the electromagnetic interference data; comparing the electromagnetic interference data corresponding to each of the three-dimensional models to determine the target bridging strategy of the signal return ground hole, the target bridging strategy is used to arrange the signal return ground in the circuit board hole.

In this way, the effective simulation of multiple specific bridging strategies of the signal return ground hole in the clock signal circuit can be realized, and the target bridging strategy of the return ground hole can be determined reliably in advance, and the design efficiency of the clock signal circuit can be effectively improved.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained based on these drawings without any creative effort.

Fig. 1 shows a schematic diagram of a system to which the embodiments of the present application can be applied.

FIG. 2 shows a flowchart of a clock signal circuit design method according to an embodiment of the present application.

FIG. 3 shows a block diagram of a clock signal circuit design device according to an embodiment of the present application.

Fig. 4 shows a block diagram of an electronic device according to an embodiment of the present application.

Embodiments of the present invention

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application.

In the following description, specific embodiments of the present application will be described with reference to steps and symbols executed by one or more computers, unless otherwise stated. Accordingly, these steps and operations will several times be referred to as being computer-implemented, which herein refers to operations by a computer processing unit of electronic signals representing data in a structured form. This operation transforms the data or maintains it in a location in the computer's memory system that can reconfigure or otherwise alter the operation of the computer in a manner well known to those skilled in the art. The data structures maintained by the data are physical locations in the memory that have certain characteristics defined by the data format. However, the principles of the present application are described in the above words, which are not meant to be a limitation. Those skilled in the art will understand that the various steps and operations described below can also be implemented in hardware.

FIG. 1 shows a schematic diagram of a system 100 to which the embodiments of the present application can be applied. As shown in FIG. 1 , the system 100 may include a cloud server 101 and/or a local terminal 102 . The local terminal 102 may be any computer device, such as a computer, a mobile phone, a smart watch, and a home appliance. The cloud server 101 may be a server providing cloud services.

In an implementation manner of this example, the cloud server 101 and/or the local terminal 102 can: obtain multiple three-dimensional models of the circuit board, and set the signal return ground hole of the clock signal circuit in each of the three-dimensional models according to a specific bridging strategy , the clock signal circuit switches the reference layer; performs scattering parameter simulation processing on each of the three-dimensional models within the frequency range of the target signal, and generates an electromagnetic interference simulation model corresponding to each of the three-dimensional models; based on each of the electromagnetic interference The simulation model performs electromagnetic interference simulation processing to obtain the electromagnetic interference data corresponding to each of the three-dimensional models; compare the electromagnetic interference data corresponding to each of the three-dimensional models to determine the target bridging strategy of the signal return hole, and the target bridging strategy It is used for arranging the signal return ground hole in the circuit board.

Fig. 2 schematically shows a flowchart of a method for designing a clock signal circuit according to an embodiment of the present application. The execution subject of the clock signal circuit design method may be any device, such as the local terminal 102 or the server 101 shown in FIG. 1 .

As shown in FIG. 2 , the clock signal circuit design method may include steps S210 to S240.

Step S210, obtaining a plurality of three-dimensional models of the circuit board, and setting the signal return ground hole of the clock signal circuit in each of the three-dimensional models according to a specific bridging strategy;

Step S220, performing scattering parameter simulation processing on each of the three-dimensional models within the frequency range of the target signal, and generating an electromagnetic interference simulation model corresponding to each of the three-dimensional models;

Step S230, performing electromagnetic interference simulation processing based on each of the electromagnetic interference simulation models, and obtaining electromagnetic interference data corresponding to each of the three-dimensional models;

Step S240, comparing the electromagnetic interference data corresponding to each of the three-dimensional models to determine a target bridging strategy for the signal return ground hole, and the target bridging strategy is used to arrange the signal return ground hole in the circuit board.

The clock signal circuit is the wiring that transmits the clock signal. The clock signal circuit usually includes a forward circuit and a return circuit. The forward circuit is the wiring from the signal source to the signal receiving end. A trace layer, such as a ground or power layer) returns to the trace at the signal source. The clock signal circuit has the situation of switching the wiring layer. By setting the "signal return ground hole" according to different "specific bridging strategies" to bridge the reference layer switched when switching the wiring layer, the electromagnetic radiation of the circuit board can be affected.

For example, the wiring layer in a 4-layer circuit board includes the clock wiring layer on the upper and lower surfaces, and the middle two layers are reference layers. When switching the wiring layer, the forward circuit will pass through the "forward signal via" from the clock wiring layer on the upper surface. Switch to the clock wiring layer on the lower surface, and the return circuit is routed on the reference layer. If the return circuit is only routed on the reference layer of the upper layer, there will be strong electromagnetic radiation. Ground hole" bridging for return circuit routing can reduce electromagnetic radiation, and different "specific bridging strategies" have different effects.

The three-dimensional model is a three-dimensional model constructed according to the physical structure of the circuit board, and the three-dimensional model can be constructed by three-dimensional software. A plurality of three-dimensional models can be obtained by three-dimensional rendering of the circuit board with the structure of the signal return ground hole of the clock signal circuit set according to each specific bridging strategy, wherein a certain specific bridging strategy may not be provided with a signal return ground hole.

The target signal frequency range can be the signal frequency range set according to actual needs. Based on the electromagnetic field simulation software, the scattering parameter simulation processing of each 3D model can be performed within the target signal frequency range, that is, the electromagnetic field simulation calculation based on each 3D model can be used to extract the scattering parameters. Parameters (that is, Scatter parameters, also known as S parameters), can convert each 3D model into a 3D electromagnetic interference simulation model carrying electromagnetic field information.

Then, the circuit board electromagnetic simulation software can be used to perform electromagnetic interference simulation processing based on each electromagnetic interference simulation model, and obtain electromagnetic interference data corresponding to each three-dimensional model, such as electromagnetic energy leakage and electromagnetic radiation intensity.

Finally, compare the electromagnetic interference data corresponding to each 3D model to determine the impact of the signal return ground hole set under different specific bridging strategies on the electromagnetic interference data, and determine the optimal target bridging strategy to arrange the signal return ground hole in the circuit board .

In this way, based on steps S210 to S240, the effective simulation of multiple specific bridging strategies for the signal return ground hole in the clock signal circuit can be reliably determined in advance and the target bridging strategy of the return ground hole can be effectively improved. circuit design efficiency.

The following describes specific embodiments of the steps performed when designing the clock signal circuit.

In step S210, a plurality of three-dimensional models of the circuit board are obtained, and signal return ground holes of the clock signal circuit are respectively set in each of the three-dimensional models according to a specific bridging strategy.

The clock signal circuit is the wiring that transmits the clock signal. The clock signal circuit usually includes a forward circuit and a return circuit. The forward circuit is the wiring from the signal source to the signal receiving end. A trace layer, such as a ground or power layer) returns to the trace at the signal source. The clock signal circuit has the situation of switching the wiring layer. By setting the "signal return ground hole" according to different "specific bridging strategies" to bridge the reference layer switched when switching the wiring layer, the electromagnetic radiation of the circuit board can be affected.

For example, the wiring layer in a 4-layer circuit board includes the clock wiring layer on the upper and lower surfaces, and the middle two layers are reference layers. When switching the wiring layer, the forward circuit will pass through the "forward signal via" from the clock wiring layer on the upper surface. Switch to the clock wiring layer on the lower surface, and the return circuit is routed on the reference layer. If the return circuit is only routed on the reference layer of the upper layer, there will be strong electromagnetic radiation. Ground hole" bridging for return circuit routing can reduce electromagnetic radiation, and different "specific bridging strategies" have different effects.

The three-dimensional model is a three-dimensional model constructed according to the physical structure of the circuit board, and the three-dimensional model can be constructed by three-dimensional software. A plurality of three-dimensional models can be obtained by three-dimensional rendering of the circuit board with the structure of the signal return ground hole of the clock signal circuit set according to each specific bridging strategy, wherein a certain specific bridging strategy may not be provided with a signal return ground hole.

In one embodiment, an implementation manner of generating a "specific bridging strategy" is also included. In the obtained 3D model, signal return ground holes can be set according to the "specific bridging strategy" generated in this embodiment, further improving the efficiency of clock signal circuit design .

Acquiring layout data of forward signal vias of the clock signal circuit in the circuit board and structural data of the circuit board; performing clock signal reflow analysis based on the layout data and the structural data to predict the clock A plurality of predicted bridging information of the signal return ground hole of the signal circuit; according to each of the predicted bridge information, respectively generate the specific bridging strategy of the signal return ground hole in each of the three-dimensional models.

The forward circuit in the clock signal circuit is the wiring from the signal source end to the signal receiving end, and the forward signal via is the via that bridges different clock wiring layers. The placement data may include positional data of forward signal vias, bridging data, and the like. The structural data of the circuit board may include the number of layers of the circuit board and the type data of each layer.

Using the analysis method of the reflow analysis model or the method of circuit expert analysis, the clock signal reflow analysis can be carried out based on the layout and structure data, and the multiple prediction bridging information of the signal reflow ground hole of the clock signal circuit can be reliably predicted, and the bridging information can be predicted That is, information such as bridge position, quantity, and bridge mode. Different specific bridging strategies may be generated based on the different predicted bridging information predicted.

In one embodiment, performing the clock signal reflow analysis based on the layout data and the structure data to predict a plurality of predicted bridging information of the signal reflow ground holes of the clock signal circuit includes: adopting the first reflow analysis A model, performing clock signal reflow analysis based on the layout data and the structure data, to obtain a plurality of predicted bridging information of signal reflow ground holes of the clock signal circuit predicted by the first reflow analysis model.

The first reflow analysis model is the pre-trained first analysis model based on machine learning. The first reflow analysis model can perform clock signal reflow analysis based on layout data and structural data, and predict several predicted bridge information. In this way Multiple predicted bridge information can be obtained reliably and accurately, the workload of simulation calculation can be reliably reduced, and the efficiency can be further improved.

In one embodiment, another embodiment of generating a "specific bridging strategy" is also included. In the obtained 3D model, signal return ground holes can be set according to the "specific bridging strategy" generated in this embodiment to further improve the clock signal circuit design. efficiency.

Obtain the layout data of the forward signal vias of the clock signal circuit in the circuit board, the structure data of the circuit board, and the setting data of the signal vias of other signal circuits; based on the layout data, the structure data and performing clock signal reflow analysis on the setting data to predict a plurality of predicted bridging information of the signal reflow ground hole of the clock signal circuit; according to each of the predicted bridging information, generate the The specific bridging strategy for signal return ground vias.

Other signal circuits are other circuits in the circuit board except the clock signal circuit. Obtain the setting data (such as position and bridging mode) of signal vias of other signal circuits. Using the analysis method of the backflow analysis model or the analysis method of circuit experts, the clock signal backflow analysis can be carried out based on the layout data, structure data and setting data, and can further reliably predict multiple prediction bridges of the signal backflow ground hole of the clock signal circuit Information, predicting bridge information, that is, information such as bridge location, quantity, and bridge method. Different specific bridging strategies can be generated based on the different predicted bridging information predicted.

In one embodiment, the clock signal reflow analysis is performed based on the arrangement data, the structure data and the setting data, so as to predict a plurality of predicted bridging information of the signal return ground hole of the clock signal circuit, including: The second backflow analysis model is used to perform a clock signal backflow analysis based on the layout data, the structure data, and the setting data, and obtain the number of signal backflow ground holes of the clock signal circuit predicted by the second backflow analysis model. predictive bridging information.

The second reflow analysis model is a pre-trained second analysis model based on machine learning. The second reflow analysis model can perform clock signal reflow analysis based on layout data, structure data, and setting data, and predict several predicted bridge information. This method can further reliably and accurately obtain multiple predicted bridge information, can reliably reduce the simulation calculation workload, and further improve efficiency.

In step S220, simulation processing of scattering parameters is performed on each of the three-dimensional models within the frequency range of the target signal, and an electromagnetic interference simulation model corresponding to each of the three-dimensional models is generated.

The target signal frequency range can be the signal frequency range set according to actual needs. Based on the electromagnetic field simulation software, the scattering parameter simulation processing of each 3D model can be performed within the target signal frequency range, that is, the electromagnetic field simulation calculation based on each 3D model can be used to extract the scattering parameters. Parameters (that is, Scatter parameters, also known as S parameters), can convert each 3D model into a 3D electromagnetic interference simulation model carrying electromagnetic field information.

In step S230, electromagnetic interference simulation processing is performed based on each of the electromagnetic interference simulation models, and electromagnetic interference data corresponding to each of the three-dimensional models is obtained.

Using the circuit board electromagnetic simulation software can perform electromagnetic interference simulation processing based on each electromagnetic interference simulation model, and obtain electromagnetic interference data corresponding to each three-dimensional model, electromagnetic interference data such as electromagnetic energy leakage and electromagnetic radiation intensity.

In step S240, the electromagnetic interference data corresponding to each of the three-dimensional models is compared to determine a target bridging strategy for the signal return ground hole, and the target bridging strategy is used for arranging the signal return ground hole in the circuit board.

Comparing the electromagnetic interference data corresponding to each three-dimensional model can determine the influence of the signal return ground hole set under different specific bridging strategies on the electromagnetic interference data, and determine the optimal target bridging strategy to arrange the signal return ground hole in the circuit board.

In one embodiment, the electromagnetic interference data includes electromagnetic energy leakage and electromagnetic radiation intensity; in step S240, comparing the electromagnetic interference information corresponding to each of the three-dimensional models to determine the target bridging strategy of the signal return hole, include:

Comparing the amount of electromagnetic energy leakage and the intensity of electromagnetic radiation corresponding to each of the three-dimensional models to obtain a target three-dimensional model in the plurality of three-dimensional models, the target three-dimensional model corresponds to the smallest amount of electromagnetic energy leakage and the lowest intensity of electromagnetic radiation; The specific bridging strategy corresponding to the signal return hole in the target three-dimensional model is determined as the target bridging strategy of the signal return hole.

The amount of electromagnetic energy leakage may be the size of the distribution range of electromagnetic energy leakage, and the intensity of electromagnetic radiation may be the intensity of electromagnetic radiation generated by the circuit board at a specific distance (such as 3 meters). The specific bridging strategy corresponding to the target 3D model with the smallest amount of electromagnetic energy leakage and the lowest electromagnetic radiation intensity is determined as the target bridging strategy for designing the signal return ground hole of the clock signal circuit in the circuit board, which can effectively improve the performance of the circuit board.

In one embodiment, after performing the scattering parameter simulation processing on each of the three-dimensional models within the frequency range of the target signal, the method further includes:

Extracting the scattering parameters corresponding to each of the three-dimensional models; the comparing the electromagnetic energy leakage and electromagnetic radiation intensity corresponding to each of the three-dimensional models includes: determining the target signal frequency according to the scattering parameters corresponding to each of the three-dimensional models ; Comparing the electromagnetic energy leakage amount and electromagnetic radiation intensity of each of the three-dimensional models at the target signal frequency.

After the scattering parameter simulation processing is performed on each 3D model within the frequency range of the target signal, the scattering parameters of each 3D model within the frequency range of the target signal can be output. According to the scattering parameters corresponding to each 3D model, the target signal frequency can be determined within the target signal frequency range, and then, comparing the electromagnetic energy leakage and electromagnetic radiation intensity of each 3D model at the target signal frequency can further improve the reliability of the comparison .

In one embodiment, according to the scattering parameters corresponding to each of the three-dimensional models, determining the target signal frequency includes: within the target signal frequency range, determining the target signal frequency when the scattering parameters corresponding to all three-dimensional models are closest (that is, the target signal frequency The difference between the scattering parameters corresponding to the three-dimensional model at the signal frequency is the smallest compared with the difference at other signal frequencies). In one embodiment, determining the frequency of the target signal according to the scattering parameters corresponding to each of the three-dimensional models includes: within the frequency range of the target signal, determining that the difference between the scattering parameters corresponding to all three-dimensional models is less than a predetermined Target signal frequency at threshold.

In order to facilitate better implementation of the clock signal circuit design method provided in the embodiment of the present application, the embodiment of the present application further provides a clock signal circuit design device based on the above clock signal circuit design method. The meanings of the nouns are the same as those in the above clock signal circuit design method, and for specific implementation details, please refer to the descriptions in the method embodiments. FIG. 3 shows a block diagram of a clock signal circuit design device according to an embodiment of the present application.

As shown in FIG. 3 , the clock signal circuit design device 300 may include an acquisition module 310 , a scattering simulation module 320 , an electromagnetic simulation module 330 and a comparison module 340 .

The acquisition module 310 can be used to acquire a plurality of three-dimensional models of the circuit board, and the signal return ground hole of the clock signal circuit is respectively set in each of the three-dimensional models according to a specific bridging strategy; the scattering simulation module 320 can be used for Perform scattering parameter simulation processing on each of the three-dimensional models to generate an electromagnetic interference simulation model corresponding to each of the three-dimensional models; the electromagnetic simulation module 330 can be used to perform electromagnetic interference simulation processing based on each of the electromagnetic interference simulation models to obtain Each of the three-dimensional models corresponds to electromagnetic interference data; the comparison module 340 can be used to compare the electromagnetic interference data corresponding to each of the three-dimensional models, so as to determine the target bridging strategy of the signal backflow ground hole, and the target bridging strategy is used in The signal return ground hole is arranged in the circuit board.

In some embodiments of the present application, the electromagnetic interference data includes electromagnetic energy leakage and electromagnetic radiation intensity; the comparison module 340 includes: a data comparison unit for comparing the electromagnetic energy leakage corresponding to each of the three-dimensional models amount and electromagnetic radiation intensity to obtain the target three-dimensional model in the plurality of three-dimensional models, the electromagnetic energy leakage corresponding to the target three-dimensional model is the smallest and the electromagnetic radiation intensity is the lowest; the strategy generation unit is used to convert the target three-dimensional model The specific bridging strategy corresponding to the signal return ground hole is determined as the target bridging strategy of the signal return ground hole.

In some embodiments of the present application, the device further includes a first generation module, including: a first reference data acquisition unit, configured to acquire the layout data of the forward signal vias of the clock signal circuit in the circuit board and the structural data of the circuit board; a first analysis unit, configured to perform clock signal reflow analysis based on the layout data and the structural data, so as to predict multiple predicted bridging information of signal return ground holes of the clock signal circuit and a first generating unit, configured to respectively generate the specific bridging strategy of the signal return ground hole in each of the three-dimensional models according to each of the predicted bridging information.

In some embodiments of the present application, the device further includes a second generation module, including: a second reference data acquisition unit, configured to acquire the layout data of the forward signal vias of the clock signal circuit in the circuit board , the structural data of the circuit board and the setting data of signal vias of other signal circuits; the second analysis unit is used to perform clock signal reflow analysis based on the layout data, the structural data and the setting data to predict A plurality of predicted bridge information of the signal return ground hole of the clock signal circuit; a second generation unit, configured to generate all the signal return ground holes in each of the three-dimensional models according to each of the predicted bridge information Describe specific bridging policies.

In some embodiments of the present application, after performing the scattering parameter simulation processing on each of the three-dimensional models within the frequency range of the target signal, the device further includes a scattering parameter extraction unit, configured to: extract each of the three-dimensional Scattering parameters corresponding to the model; the data comparison unit is configured to: determine the target signal frequency according to the scattering parameters corresponding to each of the three-dimensional models; compare the electromagnetic energy leakage of each of the three-dimensional models at the target signal frequency amount and intensity of electromagnetic radiation.

In some embodiments of the present application, the first analysis unit is configured to: use a first reflow analysis model to perform clock signal reflow analysis based on the layout data and the structure data, to obtain the first reflow analysis model A plurality of predicted bridging information of signal return ground holes of the predicted clock signal circuit.

In some embodiments of the present application, the second analysis unit is configured to: use a second reflow analysis model to perform clock signal reflow analysis based on the layout data, the structure data, and the setting data, to obtain the A plurality of predicted bridging information of signal return ground holes of the clock signal circuit predicted by the second reflow analysis model.

In this way, based on the clock signal circuit design device 300, the effective simulation of multiple specific bridging strategies for the signal return ground hole in the clock signal circuit can be reliably determined in advance and the target bridging strategy of the return ground hole can be effectively improved. Signal circuit design efficiency.

It should be noted that although several modules or units of the device for action execution are mentioned in the above detailed description, this division is not mandatory. Actually, according to the embodiment of the present application, the features and functions of two or more modules or units described above may be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided to be embodied by a plurality of modules or units.

In addition, the embodiment of the present application also provides an electronic device, which can be a terminal or a server, as shown in FIG. 4 , which shows a schematic structural diagram of the electronic device involved in the embodiment of the present application. Specifically:

The electronic device may include a processor 401 of one or more processing cores, a memory 402 of one or more computer-readable storage media, a power supply 403, an input unit 404 and other components. Those skilled in the art can understand that the structure of the electronic device shown in FIG. 4 does not constitute a limitation on the electronic device, and may include more or less components than shown in the figure, or combine some components, or arrange different components. in:

The processor 401 is the control center of the electronic device, and uses various interfaces and lines to connect various parts of the entire computer device, by running or executing software programs and/or modules stored in the memory 402, and calling the Data, perform various functions of computer equipment and process data, so as to conduct overall monitoring of electronic equipment. Optionally, the processor 401 may include one or more processing cores; preferably, the processor 401 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user pages and application programs, etc. , the modem processor mainly handles wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 401 .

The memory 402 can be used to store software programs and modules, and the processor 401 executes various functional applications and data processing by running the software programs and modules stored in the memory 402 . The memory 402 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program (such as a sound playback function, an image playback function, etc.) required by at least one function; Data created by the use of computer equipment, etc. In addition, the memory 402 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage devices. Correspondingly, the memory 402 may further include a memory controller to provide the processor 401 with access to the memory 402 .

The electronic device also includes a power supply 403 for supplying power to various components. Preferably, the power supply 403 can be logically connected to the processor 401 through a power management system, so that functions such as charging, discharging, and power consumption management can be implemented through the power management system. The power supply 403 may also include one or more DC or AC power supplies, recharging systems, power failure detection circuits, power converters or inverters, power status indicators and other arbitrary components.

The electronic device can also include an input unit 404, which can be used to receive input numbers or character information, and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control.

Although not shown, the electronic device may also include a display unit, etc., which will not be repeated here. Specifically, in this embodiment, the processor 401 in the electronic device will load the executable file corresponding to the process of one or more computer programs into the memory 402 according to the following instructions, and the processor 401 will run the executable file stored in the The computer program in memory 402, thereby realizes various functions, as processor 401 can perform the following steps:

Acquiring a plurality of three-dimensional models of the circuit board, in each of the three-dimensional models, setting the signal return ground hole of the clock signal circuit according to a specific bridging strategy; performing scattering parameter simulation processing on each of the three-dimensional models within the target signal frequency range, Generate an electromagnetic interference simulation model corresponding to each of the three-dimensional models; perform electromagnetic interference simulation processing based on each of the electromagnetic interference simulation models, and obtain electromagnetic interference data corresponding to each of the three-dimensional models; compare the electromagnetic interference corresponding to each of the three-dimensional models disturbance data to determine a target bridging strategy for the signal return ground vias, the target bridging strategy for arranging the signal return ground vias in the circuit board.

In some embodiments of the present application, the electromagnetic interference data includes electromagnetic energy leakage and electromagnetic radiation intensity; comparing the electromagnetic interference information corresponding to each of the three-dimensional models to determine the target bridging strategy of the signal return hole , the processor 401 may execute: comparing the electromagnetic energy leakage amount and the electromagnetic radiation intensity corresponding to each of the three-dimensional models to obtain the target three-dimensional model among the multiple three-dimensional models, and the electromagnetic energy leakage amount corresponding to the target three-dimensional model The minimum and the lowest intensity of electromagnetic radiation; the specific bridging strategy corresponding to the signal return ground hole in the target three-dimensional model is determined as the target bridging strategy of the signal return ground hole.

In some embodiments of the present application, the processor 401 may perform: acquiring the layout data of the forward signal via holes of the clock signal circuit in the circuit board and the structural data of the circuit board; based on the layout Data and the structural data are analyzed for clock signal return to predict a plurality of predicted bridge information of the signal return ground hole of the clock signal circuit; according to each of the predicted bridge information, each of the three-dimensional models is generated respectively The specific bridging strategy for signal return ground vias.

In some embodiments of the present application, the processor 401 may perform: acquiring the layout data of the forward signal via holes of the clock signal circuit in the circuit board, the structural data of the circuit board, and the information of other signal circuits Setting data of signal vias; performing clock signal reflow analysis based on the layout data, the structure data and the setting data, so as to predict a plurality of predicted bridging information of the signal reflow ground holes of the clock signal circuit; according to each The predicted bridging information respectively generates the specific bridging strategy of the signal return ground hole in each of the three-dimensional models.

In some embodiments of the present application, after the scattering parameter simulation processing is performed on each of the three-dimensional models within the frequency range of the target signal, the processor 401 may perform: extracting the scattering parameters corresponding to each of the three-dimensional models ; When comparing the electromagnetic energy leakage and electromagnetic radiation intensity corresponding to each of the three-dimensional models, the processor 401 may execute: determine the target signal frequency according to the scattering parameters corresponding to each of the three-dimensional models; Electromagnetic energy leakage and electromagnetic radiation intensity of the three-dimensional model at the target signal frequency.

In some embodiments of the present application, when the clock signal reflow analysis is performed based on the layout data and the structure data to predict multiple predicted bridging information of the signal reflow ground holes of the clock signal circuit, the processor 401 It may be performed: using the first reflow analysis model, performing clock signal reflow analysis based on the layout data and the structure data, and obtaining multiple predictions of the signal reflow holes of the clock signal circuit predicted by the first reflow analysis model Bridging information.

In some embodiments of the present application, the clock signal reflow analysis is performed based on the arrangement data, the structure data and the setting data, so as to predict a plurality of predicted bridging information of the signal return ground holes of the clock signal circuit In this case, the processor 401 may execute: using the second reflow analysis model to perform clock signal reflow analysis based on the layout data, the structure data and the setting data, to obtain the clock signal predicted by the second reflow analysis model Multiple predictive bridging information for the circuit's signal return ground hole.

Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the above-mentioned embodiments can be completed by a computer program, or by controlling related hardware through a computer program, and the computer program can be stored in a computer-readable storage media and is loaded and executed by the processor.

To this end, the embodiment of the present application further provides a storage medium, in which a computer program is stored, and the computer program can be loaded by a processor to execute the steps in any one of the methods provided in the embodiments of the present application.

Wherein, the storage medium may include: read-only memory (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), disk or CD, etc.

Because the computer program stored in the storage medium can execute the steps in any one of the methods provided in the embodiments of the present application, therefore, the beneficial effects that can be achieved by the methods provided in the embodiments of the present application can be realized. For details, see the preceding The embodiment of this will not be repeated here.

Other embodiments of the present application will be readily apparent to those skilled in the art from consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any modification, use or adaptation of the application, these modifications, uses or adaptations follow the general principles of the application and include common knowledge or conventional technical means in the technical field not disclosed in the application .

It should be understood that the present application is not limited to the embodiments which have been described above and shown in the accompanying drawings, but various modifications and changes can be made without departing from the scope thereof.

Claims (20)

A clock signal circuit design method, including: Obtaining a plurality of three-dimensional models of the circuit board, in each of the three-dimensional models, setting the signal return ground hole of the clock signal circuit according to a specific bridging strategy; performing scattering parameter simulation processing on each of the three-dimensional models within the frequency range of the target signal, and generating an electromagnetic interference simulation model corresponding to each of the three-dimensional models; performing electromagnetic interference simulation processing based on each of the electromagnetic interference simulation models, and obtaining electromagnetic interference data corresponding to each of the three-dimensional models; The electromagnetic interference data corresponding to each of the three-dimensional models is compared to determine a target bridging strategy for the signal return ground hole, and the target bridging strategy is used to arrange the signal return ground hole in the circuit board. The method according to claim 1, wherein the electromagnetic interference data includes electromagnetic energy leakage and electromagnetic radiation intensity; The comparing the electromagnetic interference information corresponding to each of the three-dimensional models to determine the target bridging strategy of the signal return ground hole includes: Comparing the amount of electromagnetic energy leakage and the intensity of electromagnetic radiation corresponding to each of the three-dimensional models to obtain a target three-dimensional model among the plurality of three-dimensional models, the target three-dimensional model corresponding to the smallest amount of electromagnetic energy leakage and the lowest intensity of electromagnetic radiation; The specific bridging strategy corresponding to the signal return ground hole in the target three-dimensional model is determined as the target bridging strategy of the signal return ground hole. The method according to claim 1, wherein the method further comprises: Obtaining the layout data of the forward signal via holes of the clock signal circuit in the circuit board and the structure data of the circuit board; Performing clock signal reflow analysis based on the layout data and the structure data to predict a plurality of predicted bridging information of signal return ground holes of the clock signal circuit; According to each of the predicted bridging information, the specific bridging strategy of the signal return hole in each of the three-dimensional models is respectively generated. The method according to claim 1, wherein the method further comprises: Obtaining the layout data of the forward signal vias of the clock signal circuit in the circuit board, the structure data of the circuit board, and the setting data of signal vias of other signal circuits; performing a clock signal reflow analysis based on the layout data, the structure data and the setting data to predict a plurality of predicted bridging information of the signal reflow ground holes of the clock signal circuit; According to each of the predicted bridging information, the specific bridging strategy of the signal return hole in each of the three-dimensional models is respectively generated. The method according to claim 2, wherein, after performing scattering parameter simulation processing on each of the three-dimensional models within the frequency range of the target signal, the method further comprises: extracting scattering parameters corresponding to each of the three-dimensional models; The comparison of the electromagnetic energy leakage and electromagnetic radiation intensity corresponding to each of the three-dimensional models includes: determining the target signal frequency according to the scattering parameters corresponding to each of the three-dimensional models; Comparing the electromagnetic energy leakage amount and electromagnetic radiation intensity of each of the three-dimensional models at the target signal frequency. The method according to claim 3, wherein the clock signal reflow analysis is performed based on the layout data and the structure data to predict a plurality of predicted bridging information of the signal reflow ground hole of the clock signal circuit, comprising: The first reflow analysis model is used to perform clock signal reflow analysis based on the layout data and the structure data, and a plurality of predicted bridging information of signal reflow ground holes of the clock signal circuit predicted by the first reflow analysis model is obtained. The method according to claim 4, wherein the clock signal reflow analysis is performed based on the arrangement data, the structure data and the setup data to predict multiple predictions of the signal reflow holes of the clock signal circuit Bridging information, including: The second backflow analysis model is used to perform a clock signal backflow analysis based on the layout data, the structure data, and the setting data, and obtain the number of signal backflow ground holes of the clock signal circuit predicted by the second backflow analysis model. predictive bridging information. The method according to claim 5, wherein the determining the target signal frequency according to the scattering parameters corresponding to each of the three-dimensional models comprises: Within the target signal frequency range, determine the target signal frequency when the scattering parameters corresponding to all three-dimensional models are closest. The method according to claim 5, wherein the determining the target signal frequency according to the scattering parameters corresponding to each of the three-dimensional models comprises: Within the target signal frequency range, determine the target signal frequency when the differences between the scattering parameters corresponding to all three-dimensional models are smaller than a predetermined threshold. The method according to claim 2, wherein the amount of electromagnetic energy leakage is the size of the distribution range of electromagnetic energy leakage. The method according to claim 2, wherein the electromagnetic radiation intensity is the intensity of electromagnetic radiation generated by the circuit board at a specific distance. A clock signal circuit design device, including: The obtaining module is used to obtain a plurality of three-dimensional models of the circuit board, and in each of the three-dimensional models, the signal return ground hole of the clock signal circuit is respectively set according to a specific bridging strategy; A scattering simulation module, configured to perform scattering parameter simulation processing on each of the three-dimensional models within the frequency range of the target signal, and generate an electromagnetic interference simulation model corresponding to each of the three-dimensional models; An electromagnetic simulation module, configured to perform electromagnetic interference simulation processing based on each of the electromagnetic interference simulation models, and obtain electromagnetic interference data corresponding to each of the three-dimensional models; A comparison module, configured to compare the electromagnetic interference data corresponding to each of the three-dimensional models to determine a target bridging strategy for the signal return ground hole, and the target bridging strategy is used to arrange the signal return ground hole in the circuit board . The device according to claim 12, wherein the electromagnetic interference data includes electromagnetic energy leakage and electromagnetic radiation intensity; the comparison module includes: A data comparison unit, configured to compare the electromagnetic energy leakage and electromagnetic radiation intensity corresponding to each of the three-dimensional models, and obtain a target three-dimensional model among the plurality of three-dimensional models, the electromagnetic energy leakage corresponding to the target three-dimensional model is the smallest and The electromagnetic radiation intensity is the lowest; the strategy generation unit is configured to determine the specific bridging strategy corresponding to the signal return hole in the target three-dimensional model as the target bridging strategy of the signal return hole. The device according to claim 12, wherein the device further comprises a first generating module, comprising: The first reference data obtaining unit is used to obtain the layout data of the forward signal vias of the clock signal circuit in the circuit board and the structural data of the circuit board; the first analysis unit is used to obtain the layout data based on the layout data and performing clock signal reflow analysis on the structural data to predict a plurality of predicted bridging information of the signal reflow ground hole of the clock signal circuit; the first generation unit is configured to generate the bridging information respectively according to each of the predicted bridging information The specific bridging strategy for signal return ground holes in each of the three-dimensional models. The device according to claim 12, wherein the device further comprises a second generating module, comprising: a second reference data acquiring unit, configured to acquire the forward signal via hole of the clock signal circuit in the circuit board Layout data, structural data of the circuit board, and setting data of signal vias of other signal circuits; a second analysis unit, configured to perform clock signal reflow analysis based on the layout data, the structural data, and the setting data, To predict a plurality of predicted bridge information of the signal return ground hole of the clock signal circuit; the second generation unit is used to generate the signal return ground hole in each of the three-dimensional models according to each of the predicted bridge information The specific bridging policy for . The device according to claim 13, wherein the device further comprises a scattering parameter extraction unit, configured to: extract a scattering parameter corresponding to each of the three-dimensional models; The data comparison unit is configured to: determine the target signal frequency according to the scattering parameters corresponding to each of the three-dimensional models; and compare the electromagnetic energy leakage and electromagnetic radiation intensity of each of the three-dimensional models at the target signal frequency. The device according to claim 14, wherein the first analysis unit is configured to: use a first reflow analysis model to perform a clock signal reflow analysis based on the layout data and the structure data to obtain the first reflow A plurality of predicted bridging information of signal return ground holes of the clock signal circuit predicted by the analysis model. The device according to claim 15, wherein the second analysis unit is configured to: use a second reflow analysis model to perform clock signal reflow analysis based on the layout data, the structure data, and the setting data, to obtain A plurality of predicted bridging information of signal return ground holes of the clock signal circuit predicted by the second reflow analysis model. A storage medium, wherein a computer program is stored thereon, and when the computer program is executed by a processor of a computer, the computer is made to execute the method according to any one of claims 1 to 11. An electronic device, comprising: a memory storing a computer program; a processor reading the computer program stored in the memory to execute the method according to any one of claims 1 to 11.