CN202310277U - Printed circuit board - Google Patents
Printed circuit board Download PDFInfo
- Publication number
- CN202310277U CN202310277U CN2011203799728U CN201120379972U CN202310277U CN 202310277 U CN202310277 U CN 202310277U CN 2011203799728 U CN2011203799728 U CN 2011203799728U CN 201120379972 U CN201120379972 U CN 201120379972U CN 202310277 U CN202310277 U CN 202310277U
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- CN
- China
- Prior art keywords
- circuit board
- ground connection
- pcb circuit
- digital signal
- connection copper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a printed circuit board, comprising a PCB body, characterized in that the PCB is provided with a plurality of mutually-independent digital signal grounding copper sheets (1) and analog signal grounding copper sheets (2), the two digital signal grounding copper sheets (1) are respectively arranged near the two corners of the left side of the PCB, and the two analog signal grounding copper sheets (2) are respectively arranged near the two corners of the right side of the PCB. The printed circuit board can avoid mutual interference between analog signals and digital signals through a common grounding end.
Description
Technical field
The utility model relates to a kind of PCB circuit board, specifically is a kind of PCB circuit board that is used for electric energy meter.
Background technology
Electric energy meter generally adopts intelligentized design at present, and this makes electric energy meter possess a lot of new functions, also makes the structure of electric energy meter more complicated simultaneously.Comprised a plurality of functional modules in the intelligentized electric energy meter, comprised polylith PCB circuit board in each functional module again, the signal that each functional module need be handled also by former single signal, becomes the mixed signal that existing analog signal has digital signal again.The ground connection of analog signal corresponding simulation ground, the ground connection of digital signal corresponding digitally, the frequency of analog signal is generally lower, the frequency of digital signal is generally higher.Yet now during the PCB circuit board of the electric energy meter of technology in each module of design, generally will simulate ground and be connected on the ground connection copper sheet on the PCB circuit board with mixing nearby digitally in order to practice thrift wiring space.Not enough below the design of this PCB circuit board exists: as to cause easily between low-frequency analog signal and the high-frequency digital signal that through public ground connection generation mutual interference mutually, this interference can influence the measuring accuracy of electric energy meter; So need a kind of PCB circuit board that can avoid between analog signal and the digital signal through public ground connection generation phase mutual interference.
Summary of the invention
The technical problem that the utility model will solve is, a kind of PCB circuit board that can avoid between analog signal and the digital signal producing through public ground connection the phase mutual interference is provided.
For solving the problems of the technologies described above, the technical scheme that the utility model provides is: a kind of PCB circuit board comprises PCB circuit board body; Described PCB circuit board is provided with a plurality of independently digital signal ground connection copper sheet and analog signal ground connection copper sheets mutually.
After adopting said structure; The utlity model has following advantage: the PCB circuit board is provided with a plurality of independently digital signal ground connection copper sheet and analog signal ground connection copper sheets mutually; Simulate ground and digitally separate ground connection, be connected on respectively on the corresponding with it ground connection copper sheet, can prevent effectively that like this analog signal on the mainboard from coming mutual interference mutually with digital signal through ground connection; Make mainboard keep operate as normal, to guarantee the measuring accuracy of electric energy meter.
As preferably, said digital signal ground connection copper sheet is two, is separately positioned near two angles, left side of PCB circuit board, and said analog signal ground connection copper sheet is two, is separately positioned near two angles, right side of PCB circuit board; This structural design is simple and convenient, and earth point is fixed, easy access.
Description of drawings
Fig. 1 is the utility model PCB board structure of circuit sketch map.
As shown in the figure: 1, digital signal ground connection copper sheet, 2, analog signal ground connection copper sheet.
Embodiment
Shown in accompanying drawing 1, a kind of PCB circuit board comprises PCB circuit board body; Described PCB circuit board is provided with a plurality of independently digital signal ground connection copper sheets 1 and analog signal ground connection copper sheet 2 mutually.Said digital signal ground connection copper sheet 1 is two, is separately positioned near two angles, left side of PCB circuit board, and said analog signal ground connection copper sheet 2 is two, is separately positioned near two angles, right side of PCB circuit board.
The utility model need be distinguished analog signal ground connection on the PCB circuit board and digital signal ground connection in the specific implementation; Differentiation about above-mentioned two kinds of ground; Technical staff for affiliated industry is the common-sense content; No longer detail, shown in accompanying drawing 1, the utility model is when the wiring of PCB circuit here; Can on four angles, the ground connection copper sheet be set respectively; Confirm digital signal ground connection copper sheet 1 and analog signal ground connection copper sheet 2 quantity separately according to the proportion of digital signal and analog signal, factor word signal processing chip mainly concentrates on the left side among the figure, so can the ground connection copper sheet on two angles in left side be confirmed as digital signal ground connection copper sheet 1; If when running into some ground connection inconvenience during practical operation simultaneously and guiding on the angle of PCB circuit board, also can set up corresponding ground connection copper sheet according to actual conditions other position on the PCB circuit board.
Need to prove that the utility model is not limited to a kind of situation in the accompanying drawing 1; It can also be applied to two-sided PCB circuit board; In multilayer PCB circuit board, these are used on the design that all is based on the utility model, all within the protection range of the utility model.
Claims (2)
1. a PCB circuit board comprises PCB circuit board body; It is characterized in that: described PCB circuit board is provided with a plurality of independently digital signal ground connection copper sheet (1) and analog signal ground connection copper sheets (2) mutually.
2. according to the said PCB circuit board of claim 1; It is characterized in that: said digital signal ground connection copper sheet (1) is two; Be separately positioned near two angles, left side of PCB circuit board, said analog signal ground connection copper sheet (2) is two, is separately positioned near two angles, right side of PCB circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203799728U CN202310277U (en) | 2011-10-09 | 2011-10-09 | Printed circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203799728U CN202310277U (en) | 2011-10-09 | 2011-10-09 | Printed circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202310277U true CN202310277U (en) | 2012-07-04 |
Family
ID=46379083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203799728U Expired - Lifetime CN202310277U (en) | 2011-10-09 | 2011-10-09 | Printed circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202310277U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107135454A (en) * | 2017-06-13 | 2017-09-05 | 南京钟山苑航空技术有限公司 | A kind of public address set for SUAV |
-
2011
- 2011-10-09 CN CN2011203799728U patent/CN202310277U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107135454A (en) * | 2017-06-13 | 2017-09-05 | 南京钟山苑航空技术有限公司 | A kind of public address set for SUAV |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 315191 Yinzhou Industrial Park, Zhejiang, Ningbo, Yinzhou District, Ningbo Patentee after: NINGBO SANXING MEDICAL ELECTRIC CO., LTD. Address before: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Patentee before: Ningbo Sanxing Electric Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |
|
| CX01 | Expiry of patent term |