CN108901129B - Design method and system of printed circuit board - Google Patents
Design method and system of printed circuit board Download PDFInfo
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- CN108901129B CN108901129B CN201811046212.8A CN201811046212A CN108901129B CN 108901129 B CN108901129 B CN 108901129B CN 201811046212 A CN201811046212 A CN 201811046212A CN 108901129 B CN108901129 B CN 108901129B
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- module
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- printed circuit
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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
- H05K1/0254—High voltage adaptations; Electrical insulation details; Overvoltage or electrostatic discharge protection ; Arrangements for regulating voltages or for using plural voltages
- H05K1/0257—Overvoltage protection
- H05K1/0259—Electrostatic discharge [ESD] protection
Abstract
The invention discloses a design method and a system of a printed circuit board, and belongs to the field of printed circuit boards. According to the invention, the position relation between the functional modules in the printed circuit board to be detected is known by acquiring the layout data of the printed circuit board to be detected, whether the distance between the universal serial module and the power supply module meets the preset electrostatic protection condition or not is identified, and if the distance does not meet the preset electrostatic protection condition, the moving position of the power supply module can be acquired according to the layout data, so that the distance between the universal serial module and the power supply module meets the preset electrostatic protection condition, the ESD resistance of the printed circuit board is improved, the safety of other functional modules is improved, manpower and material resources are saved, and the efficiency of designing the printed circuit board is improved.
Description
Technical Field
The invention relates to the field of Printed Circuit Boards (PCBs), in particular to a design method and a system of a PCB.
Background
At present, the problem of electrostatic interference needs to be considered when PCB design is carried out, generally, workers need to check the PCB by themselves, manpower and time are consumed, and the problems of low efficiency and easy omission are solved. When the PCB is designed, the DC-DC position of a power supply is generally placed according to a structural space, and a 1nF capacitor or an ESD (Electro-Static discharge) element is added on the power supply to realize the effect of ESD resistance; if the ESD capability is to be improved, an ESD element is added on the signal line of the interface end; when a power supply DC-DC is placed near a USB (Universal Serial Bus) seat, two special bodies with different electrostatic potentials are close to each other to cause charge transfer, a circuit of the DC-DC power supply for generating charge transfer near the USB seat and an off-seat end is short, and due to the characteristic that an electric signal has the shortest circuit, the ESD resistance is poor through ground circuit discharge (namely electrostatic discharge), so that a worker can easily ignore the problem in the design process, and the device can be damaged seriously.
Disclosure of Invention
In view of the above problems, a method and a system for designing a printed circuit board are provided to implement a solution that can perform detection according to the layout of the printed circuit board and generate an ESD protection capability.
A design method of a printed circuit board is applied to the layout design of the printed circuit board and comprises the following steps:
the method comprises the steps of obtaining layout data of a printed circuit board to be detected, wherein the printed circuit board to be detected is provided with functional modules, the functional modules comprise power modules and universal serial modules, and the layout information comprises position information of each functional module;
identifying whether the distance between the universal serial module and the power supply module meets a preset electrostatic protection condition or not according to the layout data;
and when the distance between the universal serial module and the power supply module does not meet the preset electrostatic protection condition, acquiring the moving position of the power supply module according to the layout data so as to enable the distance between the universal serial module and the power supply module to meet the preset electrostatic protection condition.
Preferably, the functional module further includes:
the device comprises a control module, and/or a WIFI module, and/or a power amplifier module, and/or a wired network module, an analog-to-digital conversion module, and/or an audio interface module.
Preferably, the preset electrostatic protection condition is whether the distance between the universal serial module and the power module is greater than or equal to 10 mm.
Preferably, the position information of the functional module includes a position coordinate of the functional module and an area occupied in the printed circuit board to be detected.
Preferably, when the distance between the universal serial module and the power module does not satisfy the preset electrostatic protection condition, acquiring the moving position of the power module according to the layout data, so that the distance between the universal serial module and the power module satisfies the preset electrostatic protection condition, including:
when the distance between the universal serial module and the power module does not meet the preset electrostatic protection condition, calculating the moving position of the power module based on the position information of each functional module and the preset electrostatic protection condition so that the distance between the universal serial module and the power module meets the preset electrostatic protection condition.
The invention also provides a design system of the printed circuit board, which is applied to the layout design of the printed circuit board and comprises the following components:
the system comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for acquiring layout data of a printed circuit board to be detected, the printed circuit board to be detected is provided with functional modules, the functional modules comprise a power supply module and a universal serial module, and the layout information comprises position information of each functional module;
the identification unit is used for identifying whether the distance between the universal serial module and the power supply module meets a preset electrostatic protection condition or not according to the layout data;
and the processing unit is used for acquiring the moving position of the power supply module according to the layout data when the distance between the universal serial module and the power supply module does not meet the preset electrostatic protection condition, so that the distance between the universal serial module and the power supply module meets the preset electrostatic protection condition.
Preferably, the functional module further includes:
the device comprises a control module, and/or a WIFI module, and/or a power amplifier module, and/or a wired network module, an analog-to-digital conversion module, and/or an audio interface module.
Preferably, the preset electrostatic protection condition is whether the distance between the universal serial module and the power module is greater than or equal to 10 mm.
Preferably, the position information of the functional module includes a position coordinate of the functional module and an area occupied in the printed circuit board to be detected.
Preferably, when the distance between the universal serial module and the power module does not satisfy the preset electrostatic protection condition, the processing unit is configured to calculate the moving position of the power module based on the position information of each functional module and the preset electrostatic protection condition, so that the distance between the universal serial module and the power module satisfies the preset electrostatic protection condition.
The beneficial effects of the above technical scheme are that:
in the technical scheme, through acquiring the layout data of the printed circuit board to be detected, the position relation between the functional modules in the printed circuit board to be detected is known, whether the distance between the universal serial module and the power module meets the preset electrostatic protection condition is identified, if the preset electrostatic protection condition is not met, the mobile position of the power module can be acquired according to the layout data, so that the distance between the universal serial module and the power module meets the preset electrostatic protection condition, the ESD (electro-static discharge) resistance of the printed circuit board is improved, the safety of other functional modules is improved, manpower and material resources are saved, and the efficiency of designing the printed circuit board is improved.
Drawings
FIG. 1 is a flow chart of a method of designing a printed circuit board according to the present invention;
fig. 2 is a block diagram of a design system for a printed circuit board according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
Electronic device circuits often exhibit heavy pulse load characteristics, and for rapidly changing pulse loads, a DC-DC converter needs to have a fast loop response characteristic to maintain the stability of the output voltage. If the feedback voltage on the power supply DC-DC regulating circuit is impacted by ESD, the control circuit can be caused to operate below the limit in severe cases, so that the output voltage generates large change, the stability of the system is influenced (the supply voltage drops), and the phenomena of halt and the like occur. Therefore, the damage of the electronic device caused by the electrostatic discharge is particularly serious.
Based on the problems, the invention detects the layout data of the printed circuit board in the design process of the printed circuit board so as to avoid the electrostatic discharge phenomenon caused by the approach of the power supply module and the universal serial module.
As shown in fig. 1, the present invention provides a method for designing a printed circuit board, which is applied to a layout design of the printed circuit board, and comprises the following steps:
s1, obtaining layout data of a printed circuit board to be detected, wherein the printed circuit board to be detected is provided with a functional module, the functional module comprises a power module and a universal serial module (namely a USB (universal serial bus) socket), and the layout information comprises position information of each functional module;
s2, identifying whether the distance between the universal serial module and the power supply module meets a preset electrostatic protection condition or not according to the layout data;
and S3, when the distance between the universal serial module and the power module does not meet the preset electrostatic protection condition, acquiring the moving position of the power module according to the layout data so as to enable the distance between the universal serial module and the power module to meet the preset electrostatic protection condition.
Further, the functional module may further include:
the device comprises a control module, and/or a WIFI module, and/or a power amplifier module, and/or a wired network module, an analog-to-digital conversion module, and/or an audio interface module.
The position information of the functional module comprises the position coordinate of the functional module and the area occupied in the printed circuit board to be detected.
It should be noted that: the printed circuit board to be detected can be a circuit board inside a set top box or a circuit board of other electronic devices.
When the printed circuit board to be detected is the circuit board in the set top box, the functional module mainly comprises: control module, WIFI module, power amplifier module, wired network module, analog-to-digital conversion module, audio interface module, power module and universal serial module.
In this embodiment, by obtaining layout data of the printed circuit board to be detected, a positional relationship between the functional modules in the printed circuit board to be detected is known, whether a distance between the universal serial module and the power module satisfies a preset electrostatic protection condition is identified, and if the preset electrostatic protection condition is not satisfied, a moving position of the power module can be obtained according to the layout data, so that the distance between the universal serial module and the power module satisfies the preset electrostatic protection condition, the ESD resistance of the printed circuit board is improved, the safety of other functional modules is improved, manpower and material resources are saved, and the efficiency of designing the printed circuit board is improved.
In a preferred embodiment, the preset electrostatic protection condition is whether a distance between the universal serial module and the power module is greater than or equal to 10 mm.
It should be noted that the distance between the universal serial module and the power supply module is calculated as the distance between the center position of the universal serial module and the center position of the power supply module.
In a preferred embodiment, in the step S3, when the distance between the universal serial module and the power module does not satisfy the preset electrostatic protection condition, acquiring the moving position of the power module according to the layout data so that the distance between the universal serial module and the power module satisfies the preset electrostatic protection condition includes:
when the distance between the universal serial module and the power module does not meet the preset electrostatic protection condition, calculating the moving position of the power module based on the position information of each functional module and the preset electrostatic protection condition so that the distance between the universal serial module and the power module meets the preset electrostatic protection condition.
It should be noted that, while the area of the printed circuit board to be detected is not increased, the moving position of the power module is obtained according to the layout data, and the positions of the other functional modules are adjusted, so that the distance between the universal serial module and the power module is ensured to reach the preset electrostatic protection condition under the condition of the minimum adjustment amplitude, thereby realizing the layout design that the overall layout change is minimum, the area of the printed circuit board to be detected is kept unchanged, and the ESD resistance of the printed circuit board to be detected is improved.
Experiments show that the electrostatic gun for the circuit board designed by the design method of the printed circuit board can discharge +/-8 KV in a contact manner, air discharge can reach +/-15 KV, stable work can be realized, and the highest level of IEC61000-4-2 (International electrotechnical Commission, which is suitable for testing the electromagnetic compatibility of various electrical and electronic equipment) is reached. The design method of the printed circuit board can improve the integral ESD resistance of the circuit board and can be widely applied to the design of the electronic industry.
As shown in fig. 2, the present invention further provides a design system of a printed circuit board, which is applied in a layout design of the printed circuit board, and the design system of the printed circuit board may include: the device comprises an acquisition unit 1, a recognition unit 2 and a processing unit 3;
the system comprises an acquisition unit 1, a processing unit and a processing unit, wherein the acquisition unit 1 is used for acquiring layout data of a printed circuit board to be detected, the printed circuit board to be detected is provided with functional modules, the functional modules comprise a power supply module and a universal serial module, and the layout information comprises position information of each functional module;
the identification unit 2 is used for identifying whether the distance between the universal serial module and the power supply module meets a preset electrostatic protection condition or not according to the layout data;
and the processing unit 3 is used for acquiring the moving position of the power supply module according to the layout data when the distance between the universal serial module and the power supply module does not meet the preset electrostatic protection condition, so that the distance between the universal serial module and the power supply module meets the preset electrostatic protection condition.
In this embodiment, by obtaining layout data of the printed circuit board to be detected, a positional relationship between the functional modules in the printed circuit board to be detected is known, whether a distance between the universal serial module and the power module satisfies a preset electrostatic protection condition is identified, and if the preset electrostatic protection condition is not satisfied, a moving position of the power module can be obtained according to the layout data, so that the distance between the universal serial module and the power module satisfies the preset electrostatic protection condition, the ESD resistance of the printed circuit board is improved, the safety of other functional modules is improved, manpower and material resources are saved, and the efficiency of designing the printed circuit board is improved.
In a preferred embodiment, the functional module further comprises:
the device comprises a control module, and/or a WIFI module, and/or a power amplifier module, and/or a wired network module, an analog-to-digital conversion module, and/or an audio interface module.
In a preferred embodiment, the preset electrostatic protection condition is whether a distance between the universal serial module and the power module is greater than or equal to 10 mm.
It should be noted that the distance between the universal serial module and the power supply module is calculated as the distance between the center position of the universal serial module and the center position of the power supply module.
In a preferred embodiment, the position information of the functional module includes a position coordinate of the functional module and an area occupied in the printed circuit board to be detected.
In a preferred embodiment, when the distance between the universal serial module and the power module does not satisfy the preset electrostatic protection condition, the processing unit 3 is configured to calculate the moving position of the power module based on the position information of each functional module and the preset electrostatic protection condition, so that the distance between the universal serial module and the power module satisfies the preset electrostatic protection condition.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. A design method of a printed circuit board is applied to layout design of the printed circuit board and is characterized by comprising the following steps:
the method comprises the steps of obtaining layout data of a printed circuit board to be detected, wherein the printed circuit board to be detected is provided with functional modules, the functional modules comprise power modules and universal serial modules, and the layout data comprise position information of each functional module;
identifying whether the distance between the universal serial module and the power supply module meets a preset electrostatic protection condition or not according to the layout data;
and when the distance between the universal serial module and the power supply module does not meet the preset electrostatic protection condition, acquiring the moving position of the power supply module according to the layout data so as to enable the distance between the universal serial module and the power supply module to meet the preset electrostatic protection condition.
2. The method of designing a printed circuit board according to claim 1, wherein the functional module further comprises:
the device comprises a control module, and/or a WIFI module, and/or a power amplifier module, and/or a wired network module, and/or an analog-to-digital conversion module, and/or an audio interface module.
3. The method of claim 1, wherein the predetermined ESD condition is whether a distance between the USB module and the power module is greater than or equal to 10 mm.
4. The method of claim 1, wherein the position information of the functional module includes position coordinates of the functional module and an area occupied in the printed circuit board to be detected.
5. The method for designing a printed circuit board according to claim 1, wherein when the distance between the usb module and the power module does not satisfy the predetermined esd protection condition, the obtaining the moving position of the power module according to the layout data so that the distance between the usb module and the power module satisfies the predetermined esd protection condition includes:
when the distance between the universal serial module and the power module does not meet the preset electrostatic protection condition, calculating the moving position of the power module based on the position information of each functional module and the preset electrostatic protection condition so that the distance between the universal serial module and the power module meets the preset electrostatic protection condition.
6. A design system of a printed circuit board, applied to layout design of the printed circuit board, is characterized by comprising:
the system comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for acquiring layout data of a printed circuit board to be detected, the printed circuit board to be detected is provided with functional modules, the functional modules comprise a power supply module and a universal serial module, and the layout data comprises position information of each functional module;
the identification unit is used for identifying whether the distance between the universal serial module and the power supply module meets a preset electrostatic protection condition or not according to the layout data;
and the processing unit is used for acquiring the moving position of the power supply module according to the layout data when the distance between the universal serial module and the power supply module does not meet the preset electrostatic protection condition, so that the distance between the universal serial module and the power supply module meets the preset electrostatic protection condition.
7. The printed circuit board design system of claim 6, wherein the functional module further comprises:
the device comprises a control module, and/or a WIFI module, and/or a power amplifier module, and/or a wired network module, and/or an analog-to-digital conversion module, and/or an audio interface module.
8. The printed circuit board design system of claim 6, wherein the predetermined electrostatic protection condition is whether a distance between the USB module and the power module is greater than or equal to 10 mm.
9. The printed circuit board design system of claim 6, wherein the position information of the functional module includes position coordinates of the functional module and an area occupied in the printed circuit board to be detected.
10. The printed circuit board design system according to claim 6, wherein when the distance between the usb module and the power module does not satisfy the predetermined esd protection condition, the processing unit is configured to calculate the moving position of the power module based on the position information of each functional module and the predetermined esd protection condition, so that the distance between the usb module and the power module satisfies the predetermined esd protection condition.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811046212.8A CN108901129B (en) | 2018-09-07 | 2018-09-07 | Design method and system of printed circuit board |
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| CN201811046212.8A CN108901129B (en) | 2018-09-07 | 2018-09-07 | Design method and system of printed circuit board |
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| CN108901129A CN108901129A (en) | 2018-11-27 |
| CN108901129B true CN108901129B (en) | 2021-06-04 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202841677U (en) * | 2012-06-15 | 2013-03-27 | 深圳市鑫银通科技有限公司 | Anti-static circuit board |
| CN104181405A (en) * | 2013-05-21 | 2014-12-03 | 鸿富锦精密工业（深圳）有限公司 | Electromagnetic compatibility detecting method and device thereof |
| CN104797084A (en) * | 2015-04-09 | 2015-07-22 | 广东威创视讯科技股份有限公司 | Layout method and layout device for printed circuit boards |
| WO2018115163A1 (en) * | 2016-12-21 | 2018-06-28 | Conti Temic Microelectronic Gmbh | Design concept for an esd-optimised control unit |
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2018
- 2018-09-07 CN CN201811046212.8A patent/CN108901129B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202841677U (en) * | 2012-06-15 | 2013-03-27 | 深圳市鑫银通科技有限公司 | Anti-static circuit board |
| CN104181405A (en) * | 2013-05-21 | 2014-12-03 | 鸿富锦精密工业（深圳）有限公司 | Electromagnetic compatibility detecting method and device thereof |
| CN104797084A (en) * | 2015-04-09 | 2015-07-22 | 广东威创视讯科技股份有限公司 | Layout method and layout device for printed circuit boards |
| WO2018115163A1 (en) * | 2016-12-21 | 2018-06-28 | Conti Temic Microelectronic Gmbh | Design concept for an esd-optimised control unit |
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| CN108901129A (en) | 2018-11-27 |
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