CN106954338A - A kind of mainboard anti-jamming circuit - Google Patents
A kind of mainboard anti-jamming circuit Download PDFInfo
- Publication number
- CN106954338A CN106954338A CN201710312250.2A CN201710312250A CN106954338A CN 106954338 A CN106954338 A CN 106954338A CN 201710312250 A CN201710312250 A CN 201710312250A CN 106954338 A CN106954338 A CN 106954338A
- Authority
- CN
- China
- Prior art keywords
- mainboard
- guide line
- interference
- line
- interference guide
- 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.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
-
- 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
- H05K1/18—Printed circuits structurally associated with non-printed electric components
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/09218—Conductive traces
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention provides a kind of mainboard anti-jamming circuit, including a mainboard, the mainboard is provided with least one protection circuit module, at least one interference guide line and at least one diode, at least one easy interfered signal line is connected with the protection circuit module, the interference guide line is arranged in the region being easily disturbed on mainboard, the end that the front end of the interference guide line is connected to interference guide line forms the encircling space closed, the protection circuit module and easy interfered signal line are located in the encircling space, the interference guide line is connected by the positive pole of connecting line and diode, the negative pole of the diode connects power supply by connecting line；The interference guide line is opened a window provided with least one welding resistance, and solder is filled with the welding resistance windowing, and the trend of the welding resistance windowing is consistent with the trend of interference guide line.Invention increases disturbing guide line and unilateral diode to isolate interference signal, to reach jamproof purpose.
Description
Technical field
The present invention relates to field of computer technology, more particularly to a kind of mainboard anti-jamming circuit.
Background technology
Function along with various electronic products is stronger and stronger, and circuit board is less and less, and chip technology is improved,
Integrated level is improved constantly, and barrier propterty is not lifted accordingly but, still continues to use Earlier designs, and as I/O speed is improved, greatly
Part I/O mouthfuls is driven using metal-oxide-semiconductor mode, causes protective capacities weaker, in the main board work period, if cabling is by external
Interference (such as air contact or probe detection), easily causes main board work exception, data to be detected or by external interference
Influence and cause mainboard cisco unity malfunction.
The Anti-interference Design of current mainboard, mainly uses surface large area floor file or cabling when PCB layout is designed
The form on top layer is not walked to realize the anti-interference of mainboard.This mode meeting wasting space, and need all ground being connected,
Once producing interference signal on mainboard, the trend of interference signal is irregular, can influence the interference on the normal work of mainboard, mainboard
It also is difficult to eliminate, poor anti jamming capability.
The content of the invention
The technical problem to be solved in the present invention, is to provide a kind of mainboard anti-jamming circuit, the earthing mode of interference signal
Difference, while adding interference guide line and unilateral diode to isolate interference signal, to reach jamproof purpose.
What the present invention was realized in：
A kind of mainboard anti-jamming circuit, including a mainboard, the mainboard is provided with least one protection circuit module, extremely
At least one easy interfered signal is connected with a few interference guide line and at least one diode, the protection circuit module
Line, the interference guide line is arranged in the region being easily disturbed on the mainboard, and the front end of the interference guide line is connected to
The end of the interference guide line forms the encircling space of closure, the protection circuit module and the easy interfered signal line position
In in the encircling space, the interference guide line is connected by connecting line with the positive pole of the diode, and the diode is born
Pole connects power supply by connecting line；The interference guide line opens a window provided with least one welding resistance, is filled out in the welding resistance windowing
Filled with solder, the trend of the welding resistance windowing is consistent with the trend of the interference guide line.
Further, the mainboard is PCBA circuit main boards or FPC flexible circuit mainboards.
Further, the cross section of the welding resistance windowing is square, circular or ellipse.
Further, when welding resistance windowing described in plural bar being set on an interference guide line, hindered described in plural bar
Weldering windowing spaced set.
The advantage of the invention is that：The present invention can not only shield electromagnetic interference, and helpful, Er Qieti is lifted to signal quality
Antijamming capability when being contactd by mistake in mainboard power up is risen, i.e., during main board work, if hand or interference source are touched by mistake
Interference guide line on mainboard, mainboard can be in time interference signal by specified path water conservancy diversion to power supply, so as to ensure master
Plate continually and steadily works.
Brief description of the drawings
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is a kind of structural representation of mainboard anti-jamming circuit of the invention.
Fig. 2 is the structural representation of embodiment one in a kind of mainboard anti-jamming circuit of the invention.
Fig. 3 is a kind of structural representation of mainboard anti-jamming circuit kind embodiment two of the invention.
Label declaration in figure：
100- mainboards, 1- protection circuits module, 2- interference guide line, 3- diodes, the easy interfered signal lines of 4-, 5- are surrounded
Space, 6- connecting lines, the windowing of 7- welding resistances, 8- solders.
Embodiment
The present invention is made with reference to specific embodiment and further being described in detail, but the present invention structure and not only limit
In following examples.
As shown in figure 1, a kind of mainboard anti-jamming circuit of the present invention, an including mainboard 100, the mainboard 100 is
PCBA circuit main boards or FPC flexible circuit mainboards；The mainboard 100 is provided with least one protection circuit module 1, at least one
Disturb and be connected with least one easy interfered signal line in guide line 2 and at least one diode 3, the protection circuit module 1
4, the interference guide line 2 is arranged in the region being easily disturbed on the mainboard 100, the region being easily disturbed generally impedance
Less region, the radio-frequency component of data signal is easily through the different conductor on mainboard 100 with undesirable electromagnetic field pattern spoke
It is shot out, these electromagnetic fields are also referred to as electromagnetic interference (EMI), high-frequency circuit can produce a large amount of electromagnetic interferences, these electromagnetic interferences
It can be propagated along the propagated that impedance is minimum, i.e. interference source along interference guide line 2, the front end connection of the interference guide line 2
Form the encircling space 5 of closure to the end of the interference guide line 2, the protection circuit module 1 and described be easily disturbed letter
Number line 4 is located in the encircling space 5, and the interference guide line 2 is connected by connecting line 6 with the positive pole of the diode 3, described
The negative pole of diode 3 connects power supply by connecting line 6；The interference guide line 2 is provided with least one welding resistance windowing 7, institute
State and solder 8 is filled with welding resistance windowing 7, the trend of the welding resistance windowing 7 is consistent with the trend of the interference guide line 2, effect
It is to provide a kind of path, interference signal is guided into 7 positions of welding resistance windowing, so as to control the importing approach of interference signal, it is to avoid dry
Disturb signal to imported on easy interfered signal line 4, the cross section of the welding resistance windowing 7 is square, circular or ellipse；The resistance
The quantity of weldering windowing 7 is more, and antijamming capability is stronger, and welding resistance described in the plural bar of setting is opened on an interference guide line 2
During window 7,7 spaced sets of welding resistance windowing, improve boot efficiency described in plural bar.
Embodiment one：
This programme is mainly by a kind of new cabling design and PCB design mode to lift mainboard antijamming capability.It is single
The PCB design schematic diagram of individual protection circuit module 1 is as shown in Fig. 2 the protection circuit module 1 is IC chip, such as ear
Machine transplanting of rice seat JP1 (model PJ_392), earphone socket JP1 first port ground connection, earphone socket JP1 second port are connected with the right side
Channel output signal line ROUT, earphone socket JP1 the 4th port are connected with left channel output signal line LOUT, earphone socket
JP1 the 6th port is connected with Composite Video Baseband Signal line CVBS_OUT, right channel output signal line ROUT, L channel output
Signal wire LOUT and Composite Video Baseband Signal line CVBS_OUT is easy interfered signal line 4, and the signal is to need letter to be protected
Number；
The interference guide line 2 (GND_LINE) is around easy interfered signal line 4, by the easy (R channel of interfered signal line 4
Output signal line ROUT, left channel output signal line LOUT and Composite Video Baseband Signal line CVBS_OUT) it is surrounded progress
Protection.When producing interference signal, because the interference guide line 2 is located in the minimum region of impedance, then the interference guiding
Line 2 and welding resistance windowing 7 can guide interference signal directional guide, be walked along the route of the interference guide line 2, and pass through
2 unilateral diodes (D1, D2) are with leading to power supply.
Embodiment two：
This programme is mainly by a kind of new cabling design and PCB design mode to lift mainboard antijamming capability.n(n
>=1) individual protection circuit module PCB design schematic diagram as shown in figure 3, the protection circuit module 1 be IC chip and
The circuit module or analog signal generator of external device composition；The individual protection circuit module correspondences of n (n >=1) are connected with crucial letter
Number 1~n of line (n >=1), 1~n of key signal line (n >=1) are easy interfered signal, and the signal is needs signal to be protected.
The embodiment is provided with 4 groups of protection circuit modules (protection circuit module 1-1, protection circuit module 1-2, protection electricity
Road module 1-3, protection circuit module 1-4), to that should have 4 groups of key signal lines (key signal line 4-1, key signal line 4-2, pass
Key signals line 4-3, key signal line 4-4) protection is needed, interference signal is directed to by protection circuit module 1 by the side of mainboard 100
Optimal ground hole (the optimal earthing position of each mainboard 100 is different in actual design, need to be adjusted according to actual conditions) is anti-to reach
Disturbance-proof design.When producing interference signal, because the interference guide line 2 is located in the minimum region of impedance, then the interference
Guide line 2 and welding resistance windowing 7 can guide interference signal directional guide, be walked along the route of the interference guide line 2, and
By 4 unilateral diodes 3 (D1, D2, D3, D4) with leading to power supply.
The operation principle of the present invention is as follows：
This programme is mainly by a kind of new cabling design and PCB design mode to lift mainboard antijamming capability, carries
Rise the protective capability to easy interfered signal line.The present invention is addition n (n >=1) individual protection circuit on the principle design of mainboard 100
Module 1, specific to being decomposed in design to each protection circuit module 1, by increasing interference guide line 2, and it is unidirectional with diode 3
(ground connection) controls interference signal release way to realize with connecting power supply, and interference guide line 2 is surrounded on easy interfered signal line, together
When interference guide line 2 on partly place welding resistance windowing 7, the external interference signal of directional guide, interference guide line 2 pass through at least one
Diode 3 with unidirectionally connecting power supply, reaches the effect of unidirectional guiding interference signal direction, while preventing the interference string of power supply ground again
To above interference guide line 2.By disturbing guide line 2 to realize guiding to interference signal, absorbing, anti-interference purpose is reached.
Advantages of the present invention is as follows：
The present invention can not only shield electromagnetic interference, helpful to signal quality lifting, and in lifting mainboard power up
Antijamming capability when contacing by mistake, i.e., during main board work, if the interference that hand or interference source are touched on mainboard, mainboard by mistake
Guide line can be in time interference signal by specified path water conservancy diversion to power supply, so as to ensure that mainboard continually and steadily works.
Although the foregoing describing the embodiment of the present invention, those familiar with the art should manage
Solution, the specific embodiment described by us is merely exemplary, rather than for the restriction to the scope of the present invention, is familiar with this
The equivalent modification and change that the technical staff in field is made in the spirit according to the present invention, should all cover the present invention's
In scope of the claimed protection.
Claims (4)
1. a kind of mainboard anti-jamming circuit, it is characterised in that：Including a mainboard, the mainboard is provided with least one protection electricity
At least one is connected with road module, at least one interference guide line and at least one diode, the protection circuit module easily
Interfered signal line, the interference guide line is arranged in the region being easily disturbed on the mainboard, the interference guide line
The end that front end is connected to the interference guide line forms the encircling space of closure, the protection circuit module and described easily by dry
Signal wire is disturbed in the encircling space, the interference guide line is connected by connecting line with the positive pole of the diode, described
The negative pole of diode connects power supply by connecting line；The interference guide line opens a window provided with least one welding resistance, the resistance
Solder is filled with weldering windowing, the trend of the welding resistance windowing is consistent with the trend of the interference guide line.
2. a kind of mainboard anti-jamming circuit as claimed in claim 1, it is characterised in that：The mainboard be PCBA circuit main boards or
FPC flexible circuit mainboards.
3. a kind of mainboard anti-jamming circuit as claimed in claim 1, it is characterised in that：The cross section of the welding resistance windowing is side
Shape, circle or ellipse.
4. a kind of mainboard anti-jamming circuit as claimed in claim 1, it is characterised in that：Set on an interference guide line
When putting welding resistance windowing described in plural bar, welding resistance windowing spaced set described in plural bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710312250.2A CN106954338B (en) | 2017-05-05 | 2017-05-05 | Mainboard anti-interference circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710312250.2A CN106954338B (en) | 2017-05-05 | 2017-05-05 | Mainboard anti-interference circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106954338A true CN106954338A (en) | 2017-07-14 |
| CN106954338B CN106954338B (en) | 2023-03-14 |
Family
ID=59478158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710312250.2A Active CN106954338B (en) | 2017-05-05 | 2017-05-05 | Mainboard anti-interference circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106954338B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE601397C (en) * | 1929-12-01 | 1934-08-15 | Karl Valdemar Joergensen | Bridge circuit to protect radio receivers against local interference |
| JPH09121084A (en) * | 1995-10-24 | 1997-05-06 | Tamagawa Seiki Co Ltd | Electrode structure for terminal of substrate |
| JP2015079911A (en) * | 2013-10-18 | 2015-04-23 | 株式会社デンソー | Electronic device |
| CN105764262A (en) * | 2015-04-29 | 2016-07-13 | 东莞生益电子有限公司 | Manufacturing method of PCB, and PCB |
-
2017
- 2017-05-05 CN CN201710312250.2A patent/CN106954338B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE601397C (en) * | 1929-12-01 | 1934-08-15 | Karl Valdemar Joergensen | Bridge circuit to protect radio receivers against local interference |
| JPH09121084A (en) * | 1995-10-24 | 1997-05-06 | Tamagawa Seiki Co Ltd | Electrode structure for terminal of substrate |
| JP2015079911A (en) * | 2013-10-18 | 2015-04-23 | 株式会社デンソー | Electronic device |
| CN105764262A (en) * | 2015-04-29 | 2016-07-13 | 东莞生益电子有限公司 | Manufacturing method of PCB, and PCB |
Non-Patent Citations (1)
| Title |
|---|
| 高辉: "智能仪器的抗干扰技术" * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106954338B (en) | 2023-03-14 |
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