CN108666805B - A kind of communication interface - Google Patents
A kind of communication interface Download PDFInfo
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- CN108666805B CN108666805B CN201810321392.XA CN201810321392A CN108666805B CN 108666805 B CN108666805 B CN 108666805B CN 201810321392 A CN201810321392 A CN 201810321392A CN 108666805 B CN108666805 B CN 108666805B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
- H01R13/6691—Structural association with built-in electrical component with built-in electronic circuit with built-in signalling means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
- H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/717—Structural association with built-in electrical component with built-in light source
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a kind of communication interfaces, including front panel, rear panel, frame, hold-down support, and the protection circuit inside hold-down support；Hold-down support is ladder-like rectangular configuration open at one end, and the open end of hold-down support is arranged in front panel, and frame setting on the outer periphery of plate and hold-down support, is used for fixed front panel in front；Rear panel is set to the inside of hold-down support, is connected between front panel and rear panel by protection circuit；Front panel is equipped with multi-signal line interface, including covered wire, magnetite, network interface, radio frequency mouth, video port and power port, and the communication equipment outside vehicle passes through the signal wire interface access communications interface arrangement on front panel；Rear panel is equipped with signal wire interface corresponding with front panel, and interior communication equipment is connected by the signal wire interface on rear panel with communication interface；The present invention can pointedly carry out protective treatment according to the characteristic of different transmission signals, and vdiverse in function, equipment volume is small.
Description
Technical field
The invention belongs to vehicle-mounted communication for command technical fields, more particularly, to a kind of communication interface.
Background technique
Indirect lightning strike invades equipment by the route of open air transmission information, makes to be serially connected among route or the electronics of terminal is set
It is standby to be damaged.The electronic equipments lightning protection recorded according to electronic equipment lightning test method standard hits protection philosophy, is engaged in electronics
When equipment design, production, equipment quality, cost, the factors such as personal safety of operator are considered, it is necessary to will on an electronic device
The lightning impulse of generation is restricted in equipment permissible range, and to reach the technical requirements of prescribed by standard, the standard is equally applicable
In the anti-induction lightning strike protection for the electronic equipment being connected with outside line.
Communication interface is the important component in vehicle-mounted command communications system, it is in addition to being used to realize traffic guidance
Outside the interior signaling transfer point with the various transmission signals outside vehicle, it is necessary to have the protective action of anti-induction lightning stroke, connect outside to vehicle
Lightning Electromagnetic Pulse (LEMP) dry scratch that the transmission cable connect introduces plays interception function with surge voltage, prevents from leading to car
Believe that equipment generates destruction；Remote wire communication transmission can be realized by the device, and to passing through distant signal transmission line
Dry scratch of Lightning Electromagnetic Pulse (LEMP) that cable introduces is intercepted and is decayed, to protect to interior communication equipment.
In the prior art in order to protect vehicular communication equipment, simple surge voltage impact protection dress is usually onboard set
It sets, but there is problems:
1, existing protective device has a single function, and can not the received multi-signal of vehicular communication equipment be carried out while be located
Reason, it is therefore desirable to multiple protective devices are set on vehicle-carrying communication vehicle, cause equipment volume big, signal wire connection is more, in vehicle
The equal limited application installation in spaces is inconvenient；
2, existing protective device is handled audio signal, vision signal using general protection circuit, is not directed to
Other multi-signals such as network signal, power supply signal, and universal protection circuit does not consider the electrical characteristic of different transmission signals,
Cause protection effect bad.
Summary of the invention
For at least one defect or Improvement requirement of the prior art, the present invention provides a kind of general communication interface dresses
It sets, which can be existing its object is to solve according to the characteristics of signals difference of transmission using corresponding switching and safeguard procedures
It is had a single function existing for communication interface, the problem that protection effect is bad.
To achieve the above object, according to one aspect of the present invention, a kind of communication interface, including front are provided
Plate, rear panel, frame, hold-down support, and the protection circuit inside hold-down support；
Hold-down support is ladder-like rectangular configuration open at one end, and the open end of hold-down support, frame is arranged in front panel
It is arranged on the outer periphery of plate in front and hold-down support, is used for fixed front panel；Rear panel is set to the inside of hold-down support, before
It is connected between plate and rear panel by the protection circuit；
Front panel is equipped with multi-signal line interface, including covered wire, magnetite, network interface, radio frequency mouth, video port and power supply
Mouthful, the communication equipment outside vehicle passes through the signal wire interface access communications interface arrangement on front panel；The rear panel be equipped with
The corresponding signal wire interface of front panel, interior communication equipment pass through the signal wire interface and communication interface phase on rear panel
Connection；
Protection circuit includes network signal protection sub-circuit, signal of communication protection sub-circuit, power supply signal protection sub-circuit
Sub-circuit is protected with day feedback signal, is respectively used to network signal, signal of communication, power supply signal and the day feedback signal inputted outside vehicle
Carry out lightning-arrest filtering processing；Each protection sub-circuit is all made of modularized design, is respectively used to inside hold-down support equipped with several
The guide rail of different protection sub-circuits is placed, each modular protection sub-circuit is separately fixed on guide rail.
Preferably, above-mentioned communication interface, further includes shield, the side of shield be fixed on frame and relative to
The plane of front panel can be rotated；The two sides of shield, which are respectively provided with, sets up shield at an angle on the front panel
Supporting plate.
Preferably, above-mentioned communication interface is additionally provided with headlamp and switch button on the front plate.
Preferably, above-mentioned communication interface, hold-down support offer several logical on one end end face of rear panel
Hole, interior various signal cables pass through through-hole and access rear panel.
Preferably, above-mentioned communication interface, hold-down support use sheet metal structure, make frame with aluminum profile.
Preferably, above-mentioned communication interface, it includes first order protection circuit, the second level that network signal, which protects sub-circuit,
Protection circuit and third level protection circuit；
First order protection circuit includes gas-discharge tube FV1, FV2；The first end and second end of gas-discharge tube FV1 bridges
On the front panel between the first signal wire in network interface and rear panel network interface and the second line signal wire；The of gas-discharge tube FV2
One end and second end are connected across between third signal wire and the 6th signal wire；
Second level protection circuit includes diode V1~V8, and the first signal wire and the are connected across after diode V1, V2 series connection
Between binary signal line, the cathode of diode V1 is connected with the first signal wire, and anode is connected with the anode of diode V2；Diode V2
Cathode be connected with second signal line；The first letter of network signal input terminal and output end is connected across after diode V3, V4 series connection
Number between line and second signal line, the anode of diode V3 is connected with the first signal wire, and cathode is connected with the cathode of diode V2；
The anode of diode V4 is connected with second signal line；Third signal wire and the 6th signal wire are connected across after diode V5, V6 series connection
Between, the cathode of diode V5 is connected with third signal wire, and anode is connected with the anode of diode V6；The cathode of diode V6 with
6th signal wire is connected；It is connected across between third signal wire and the 6th signal wire after diode V7, V8 series connection, the sun of diode V7
Pole is connected with third signal wire, and cathode is connected with the cathode of diode V8；The anode of diode V8 is connected with fourth signal line；
Third level protection circuit includes two-way Transient Suppression Diode VD1~VD3；Two-way Transient Suppression Diode VD1's
One end is connected with the common end of diode V1 and diode V2, and the other end is connected with the common end of diode V3 and diode V4；
One end of two-way Transient Suppression Diode VD2 is connected with the common end of diode V5 and diode V6, the other end and diode V7
It is connected with the common end of diode V8；One end of two-way Transient Suppression Diode VD3 is public with diode V1's and diode V2
End is connected, and the other end is connected with the common end of diode V5 and diode V6.
Preferably, above-mentioned communication interface, signal of communication protection sub-circuit include gas-discharge tube FV5, current limliting electricity
Hinder R1, R2, two-way Transient Suppression Diode VD7 and diode V17~V22；
The first end and second end of gas-discharge tube FV5 bridges covered wire on the front panel or magnetite and rear panel quilt respectively
Between multiple line or two signal lines of magnetite, third terminates protecting field；Diode V17, V18 series connection after by current-limiting resistance R1,
R2 is connected across between two signal lines, is connected across between two signal lines after diode V19, V20 series connection, the sun of diode V21
Pole is connected with the common end of diode V17, V18, and the cathode of diode V22 is connected with the common end of diode V19, V20；It is two-way
One end of Transient Suppression Diode VD7 is connected with the common end of diode V17, V18, the public affairs of the other end and diode V19, V20
End is connected altogether.
Preferably, above-mentioned communication interface, it includes current-limiting resistance R3, R4, R5 that power supply signal, which protects sub-circuit, two-way
Transient Suppression Diode VD8, VD9, VD10, bridge rectifier and photoelectrical coupler；
Front on board supply mouth and rear panel power port are connected across after two-way Transient Suppression Diode VD8 and VD9 series connection
Between two signal lines, one end of two-way Transient Suppression Diode VD10 is public with two-way Transient Suppression Diode VD8's and VD9
End is connected, other end ground connection；The first end of bridge rectifier and third end and two-way Transient Suppression Diode VD8 and VD9 are simultaneously
Connection is arranged between two signal lines, and second end and the 4th end are connected with the input terminal of photoelectrical coupler.
Preferably, above-mentioned communication interface, a day feedback signal protection sub-circuit includes gas-discharge tube FV6, and gas is put
Radio frequency mouth or video on the radio frequency mouth or video port and rear panel of the first end and second end bridging of fulgurite FV6 on the front panel
Between mouthful, third terminates protecting field.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, can obtain down and show
Beneficial effect:
(1) communication interface provided by the invention, for the different characteristics of various transmission signals, using different protection
Circuit is respectively handled it, reduces safeguard volume while realizing lighting protection；Various protection circuits are solid
Determine to design inside support using division moduleization, not interfere with each other and convenient for safeguarding；Be provided on front panel and rear panel with
The corresponding signal converting interface of each protection circuit, structure are simple and easy to operate；The present invention can be directed to according to transmission characteristics of signals
Property taken shelter from the thunder, be filtered, after signal processing, reduce to the greatest extent signal decaying.
(2) communication interface provided by the invention, it is contemplated that product need to be mounted on this outer application scenarios of communication truck, lead to
The design of the structures such as shield, headlamp is crossed, the requirement such as rain-proof, sludge splashing-proof, night illumination can be met, improve vehicle-mounted commander
The all weather operations ability of communication system.
Detailed description of the invention
Fig. 1 is the side view of communication interface provided in an embodiment of the present invention；
Fig. 2 is the front view of communication interface provided in an embodiment of the present invention；
Fig. 3 is the rearview of communication interface provided in an embodiment of the present invention；
Fig. 4 is the circuit diagram of network signal protection sub-circuit provided in an embodiment of the present invention；
Fig. 5 is the circuit diagram of signal of communication protection sub-circuit provided in an embodiment of the present invention；
Fig. 6 is the circuit diagram of power supply signal protection sub-circuit provided in an embodiment of the present invention；
Fig. 7 is the circuit diagram of day feedback signal protection sub-circuit provided in an embodiment of the present invention；
In all the appended drawings, same appended drawing reference indicates identical technical characteristic, specifically: 1- front panel, behind 2-
Plate, 3- frame, 4- hold-down support, 5- shield, 6- supporting plate.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can be combined with each other.
A kind of communication interface provided by the present invention is mainly used for realizing a variety of transmission signals inside and outside communication truck
Switching and safeguard function, to communication truck outside transmission cable introduce Lightning Electromagnetic Pulse interference and surge voltage intercept,
It prevents from damaging interior communication equipment.
Fig. 1 is the side view of communication interface provided in an embodiment of the present invention；Fig. 2 is provided in an embodiment of the present invention logical
Believe the front view of interface arrangement；Fig. 3 is the rearview of communication interface provided in an embodiment of the present invention；
As shown in Figure 1, communication interface provided in this embodiment, including front panel 1, rear panel 2, frame 3, fixed branch
Seat 4, and the protection circuit inside hold-down support 4；
Wherein, hold-down support 4 is ladder-like rectangular configuration open at one end, and the opening of hold-down support 4 is arranged in front panel 1
End, the setting of frame 3 on the outer periphery of plate 1 and hold-down support 4, are used for fixed front panel 1 in front；Rear panel 2 is set to fixed branch
The inside of seat 4 is connected between front panel 1 and rear panel 2 by protection circuit；
As shown in Fig. 2, front panel 1 is equipped with multi-signal line interface and headlamp and switch button, signal wire interface
Including but not limited to covered wire, magnetite, network interface, radio frequency mouth, video port, power port；Network interface includes in two outer network interfaces and one
Network interface, covered wire and magnetite are two；Headlamp is used for night illumination, improves all weather operations of vehicle-mounted command communications system
Ability.
Covered wire and magnetite are the interfaces that the communications cable outside vehicle is connected with the communication interface；Network interface is the net outside vehicle
Network equipment, such as computer, the interface being connected with the communication interface；Radio frequency mouth is that the radio-frequency apparatus and the communication outside vehicle connect
The connected interface of mouth device, video port is the interface that the video equipment outside vehicle is connected with the communication interface；Power port is vehicle
The interface that outer power supply or lighting apparatus is connected with the communication interface；
As shown in figure 3, rear panel 2 is equipped with signal wire interface corresponding with front panel 1, the interior communications cable, net
Network equipment, radio-frequency apparatus, video equipment, power supply or lighting apparatus pass through the signal wire interface and the communication interface on rear panel 2
Device is connected, wherein each signal wire interface on front panel 1 is as the input terminal to induction signal, and each signal wire connects on rear panel 2
Output end of the mouth as signal；The communication device realizes the function of interior external signal switching as a result, and hold-down support 4 is after
Several through-holes are offered on one end end face of panel 2, interior various signal cables pass through above-mentioned through-hole and access rear panel 2；Such as
Shown in Fig. 4, the centre of hold-down support 4 is provided with an ellipse hole, and it is round logical that the two sides of the ellipse hole offer one respectively
Hole is additionally provided with the earthing rod for fixing ground wire on rear panel, guarantees the reliable ground of entire communication interface, to reach more
Good protection effect.
It is respectively equipped with corresponding protection circuit between each signal wire interface on front panel 1 and rear panel 2, for various biographies
The different characteristics of defeated signal are respectively handled it using different protection circuits, compare universal protection circuit, the present invention
Corresponding protection circuit is designed for the electrical characteristic of different transmission signals, better lighting protection effect can be reached；
Several guide rails for being respectively used to place different protection circuits are equipped with inside hold-down support 4, each protection circuit passes through
Conducting resinl is bonded on corresponding guide rail and is locked by screw；Each protection circuit uses division module inside hold-down support 4
Change design, does not interfere with each other and convenient for safeguarding；
Hold-down support 4 uses sheet metal structure, makees frame with aluminum profile, under the premise of meeting intensity requirement, alleviator
Weight；Aluminum profile is matched in the fillet that generation involved in process is straightened with the fillet of sheet metal structure, keeps the communication interface simple
Clean beauty；It is locked between front panel 2 and hold-down support 4 by screw, is reliably fixed front panel 1, convenient for operation；
As a preferred embodiment, which further includes shield 5, and the side of the shield 5 is fixed
It can be rotated on frame 3, and relative to the plane of front panel 1；The two sides of shield 5 are respectively equipped with a supporting plate 6, which uses
In being erected at shield 5 at an angle on front panel 1, to communication under the premise of not influencing 1 normal use of front panel
Interface arrangement is protected, and to meet the requirement such as rain-proof, sludge splashing-proof, improves all weather operations ability of communication interface.
Protection circuit includes network signal protection sub-circuit, signal of communication protection sub-circuit, power supply signal protection sub-circuit
With day feedback signal protect sub-circuit, network signal protect sub-circuit be set between front panel 1 and the network interface of rear panel 2, for pair
Externally input network signal carries out protective treatment；Signal of communication protects sub-circuit set on the covered wire of front panel 1 and rear panel 2
Or between magnetite, for carrying out protective treatment to externally input signal of communication；Power supply signal protects sub-circuit to be set to front panel 1
Between the power port of rear panel 2, for carrying out protective treatment to externally input power supply signal；Its feedback signal protects sub-circuit
Between front panel 1 and the radio frequency mouth or video port of rear panel 2, for being carried out at protection to externally input day feedback signal
Reason；Interception function is played with surge voltage to Lightning Electromagnetic Pulse (LEMP) dry scratch that transmission cable introduces is connected outside vehicle, is prevented
Destruction is generated to interior communication equipment.
Fig. 4 is the circuit diagram of network signal protection sub-circuit provided in an embodiment of the present invention, as shown in figure 4, the network is believed
Number protection sub-circuit include three-level protection circuit；
First order protection circuit includes gas-discharge tube FV1~FV4；The first end and second end of gas-discharge tube FV1 across
Connect the 1st signal wire on plate 1 in front in network interface (network signal input terminal) and 2 network interface of rear panel (network signal output end) and
Between 2nd signal wire；The first end and second end of gas-discharge tube FV2 is connected across 2 network interface of network interface and rear panel on front panel 1
Between 3rd signal wire and the 6th signal wire；The first end and second end of gas-discharge tube FV3 be connected across on front panel 1 network interface and after
Between the 4th signal wire and the 5th signal wire of 2 network interface of panel；The first end and second end of gas-discharge tube FV4 is connected across front panel
On 1 between the 7th signal wire and the 8th signal wire of 2 network interface of network interface and rear panel；Gas-discharge tube FV1, gas-discharge tube FV2, gas
The third end of body discharge tube FV3 and gas-discharge tube FV4 is grounded；
First order protection circuit is released access for providing electric current, the major part of Lightning Electromagnetic Pulse interference and surge voltage
Energy is released to protecting field by first order protection circuit.
Second level protection circuit includes diode V1~V16, is connected across network interface on front panel 1 after diode V1, V2 series connection
Between the 1st signal wire and the 2nd signal wire in 2 network interface of rear panel, the cathode of diode V1 is connected with the 1st signal wire, anode
It is connected with the anode of diode V2；The cathode of diode V2 is connected with the 2nd signal wire；Before being connected across after diode V3, V4 series connection
Between the 1st signal wire and the 2nd signal wire on panel 1 in 2 network interface of network interface and rear panel, the anode of diode V3 and the 1st signal
Line is connected, and cathode is connected with the cathode of diode V2；The anode of diode V4 is connected with the 2nd signal wire；
The 3rd signal wire and the 6th letter being connected across after diode V5, V6 series connection on front panel 1 in 2 network interface of network interface and rear panel
Between number line, the cathode of diode V5 is connected with the 3rd signal wire, and anode is connected with the anode of diode V6；The yin of diode V6
Pole is connected with the 6th signal wire；The 3rd letter being connected across on front panel 1 after diode V7, V8 series connection in 2 network interface of network interface and rear panel
Number between line and the 6th signal wire, the anode of diode V7 is connected with the 3rd signal wire, and cathode is connected with the cathode of diode V8；Two
The anode of pole pipe V8 is connected with the 4th signal wire；
Diode V9~V12 is arranged between the 4th signal wire and the 5th signal wire, and diode V13~V16 setting is in the 7th letter
Number between line and the 8th signal wire, specific connection relationship is identical as diode V1~V4, and details are not described herein again；Second level protection
Circuit is mainly used for the overvoltage limitation of input signal in safe range.
Third level protection circuit includes two-way Transient Suppression Diode VD1~VD6；Two-way Transient Suppression Diode VD1's
One end is connected with the common end of diode V1 and diode V2, and the other end is connected with the common end of diode V3 and diode V4；
One end of two-way Transient Suppression Diode VD2 is connected with the common end of diode V5 and diode V6, the other end and diode V7
It is connected with the common end of diode V8；One end of two-way Transient Suppression Diode VD3 is public with diode V1's and diode V2
End is connected, and the other end is connected with the common end of diode V5 and diode V6；Two-way Transient Suppression Diode VD4~VD6's sets
It is identical as two-way Transient Suppression Diode VD1~VD3 to set mode, details are not described herein again.
Third level protection circuit is for residual voltage to be restricted in very small range；After the processing of three-level protection circuit
The residual voltage of thunder-strike current of 10KA (8/20 μ s) meet IEC/EN61643 testing standard.
Fig. 5 is the circuit diagram of signal of communication protection sub-circuit provided in an embodiment of the present invention, as shown in figure 5, including gas
Discharge tube FV5, current-limiting resistance R1~R2, two-way Transient Suppression Diode VD7 and diode V17~V22；
The first end and second end of gas-discharge tube FV5 is connected across 2 quilt of covered wire (or magnetite) and rear panel on front panel 1
Between two signal lines of multiple line (or magnetite), third terminates protecting field；Pass through current-limiting resistance after diode V17, V18 series connection
R1, R2 are connected across between two signal lines, are connected across between two signal lines after diode V19, V20 series connection, diode V21's
Anode is connected with the common end of diode V17, V18, and cathode connects protecting field；The cathode of diode V22 and diode V19, V20
Common end is connected, and anode connects protecting field；The common end phase of one end of two-way Transient Suppression Diode VD7 and diode V17, V18
Even, the other end is connected with the common end of diode V19, V20.
The signal of communication protects sub-circuit to implement protection to the Lightning Electromagnetic Pulse classification on transmission line, in transmission line
An aerial drainage protection circuit is set up between ground potential (casing)；Caused by the transient impact process that line end IN is inputted outside vehicle
When overvoltage electric current passes through at 7 points, 11, gas-discharge tube FV5 is first passed around, the thunder-strike current of 10KA (8/20 μ s) can be dredged,
It is released to protecting field；The second level uses diode V17~V22, in safe range by the overvoltage limitation of input signal；
Residual voltage is restricted to meet the range of IEC/EN61643 testing standard by the third level using diode-type device VD7 is inhibited
It is interior, and can promptly react.Treated signal is exported by interior line end OUT, is set into the car by 8 points, 12 points
Standby system；Meanwhile the protection circuit has filter function, can effectively be inhibited to low-frequency disturbance.
Fig. 6 is the circuit diagram of power supply signal protection sub-circuit provided in an embodiment of the present invention, as shown in fig. 6, including current limliting
Resistance R3, R4, R5, two-way Transient Suppression Diode VD8~VD10, bridge rectifier and photoelectrical coupler；
2 power port of power port and rear panel on front panel 1 is connected across after two-way Transient Suppression Diode VD8 and VD9 series connection
Two signal lines between, the public affairs of one end of two-way Transient Suppression Diode VD10 and two-way Transient Suppression Diode VD8 and VD9
End is connected altogether, other end ground connection；The first end of bridge rectifier and third end and two-way Transient Suppression Diode VD8 and VD9
It is arranged in parallel between two signal lines, second end and the 4th end are connected with the input terminal of photoelectrical coupler；
Two-way Transient Suppression Diode VD8~VD10 is by the Overvoltage suppressing of externally input power supply signal (DC power supply)
To in the range of meeting IEC/EN61643 testing standard, rectification processing then is carried out by bridge rectifier, finally passes through light
Electric coupler output, treated, and power supply signal is transmitted to interior communication unit.
Fig. 7 is the circuit diagram of day feedback signal protection sub-circuit provided in an embodiment of the present invention, as shown in fig. 7, the antenna feeder is believed
Number protection sub-circuit include gas-discharge tube FV6, the first end and second end of gas-discharge tube FV6 is connected across on front panel 1 and penetrates
On frequency mouth (or video port) and rear panel 2 between radio frequency mouth (or video port), third terminates protecting field；
Gas-discharge tube FV6 is used for the Lightning Electromagnetic Pulse in externally input day feedback signal (radio frequency, vision signal)
Most of energy of interference and surge voltage is directly transferred to interior communication unit after being dredged.
Compared to existing protective device, communication interface provided by the invention can be for the difference of various transmission signals
Characteristic is respectively handled it using different protection circuits, reduces safeguard body while realizing lighting protection
Product；Various protection circuits are designed inside hold-down support using division moduleization, are not interfered with each other and convenient for safeguarding；Front panel
With signal converting interface corresponding with each protection circuit is provided on rear panel, structure is simple and easy to operate；The present invention can root
It pointedly taken shelter from the thunder, be filtered according to transmission characteristics of signals, after signal processing, reduce signal decaying to the greatest extent.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (8)
1. a kind of communication interface, which is characterized in that including front panel, rear panel, frame, hold-down support, and be located at solid
Determine the protection circuit inside support；
The hold-down support is ladder-like rectangular configuration open at one end, and the open end of hold-down support is arranged in the front panel,
The frame setting on the outer periphery of plate and hold-down support, is used for fixed front panel in front；The rear panel is set to fixed branch
The inside of seat, is connected between front panel and rear panel by the protection circuit；
The front panel is equipped with multi-signal line interface, including covered wire, magnetite, network interface, radio frequency mouth, video port and power supply
Mouthful, the communication equipment outside vehicle passes through the signal wire interface access communications interface arrangement on front panel；The rear panel be equipped with
The corresponding signal wire interface of front panel, interior communication equipment pass through the signal wire interface and communication interface phase on rear panel
Connection；
The protection circuit includes network signal protection sub-circuit, signal of communication protection sub-circuit, power supply signal protection sub-circuit
Sub-circuit is protected with day feedback signal, the network signal to access, signal of communication, power supply signal and day feedback signal is respectively used to and carries out
Lightning-arrest filtering processing；Several guide rails are equipped with inside the hold-down support, using each protection sub-circuit point of modularized design
It is not fixed on the guide rail；
The network signal protection sub-circuit includes first order protection circuit, second level protection circuit and third level protection circuit；
The first order protection circuit includes gas-discharge tube FV1, FV2；The first end and second end of the gas-discharge tube FV1
Between the first signal wire and the second line signal wire being connected across on front panel in network interface and rear panel network interface；The gas-discharge tube
The first end and second end of FV2 is connected across between third signal wire and the 6th signal wire；
The second level protection circuit includes diode V1~V8, and the first signal wire and the are connected across after diode V1, V2 series connection
Between binary signal line, the cathode of diode V1 is connected with the first signal wire, and anode is connected with the anode of diode V2；Diode V2
Cathode be connected with second signal line；The first letter of network signal input terminal and output end is connected across after diode V3, V4 series connection
Number between line and second signal line, the anode of diode V3 is connected with the first signal wire, and cathode is connected with the cathode of diode V2；
The anode of diode V4 is connected with second signal line；Third signal wire and the 6th signal wire are connected across after diode V5, V6 series connection
Between, the cathode of diode V5 is connected with third signal wire, and anode is connected with the anode of diode V6；The cathode of diode V6 with
6th signal wire is connected；It is connected across between third signal wire and the 6th signal wire after diode V7, V8 series connection, the sun of diode V7
Pole is connected with third signal wire, and cathode is connected with the cathode of diode V8；The anode of diode V8 is connected with fourth signal line；
The third level protection circuit includes two-way Transient Suppression Diode VD1~VD3；The two-way Transient Suppression Diode
One end of VD1 is connected with the common end of diode V1 and diode V2, the common end of the other end and diode V3 and diode V4
It is connected；One end of the two-way Transient Suppression Diode VD2 is connected with the common end of diode V5 and diode V6, the other end with
Diode V7 is connected with the common end of diode V8；One end of the two-way Transient Suppression Diode VD3 and diode V1 and two
The common end of pole pipe V2 is connected, and the other end is connected with the common end of diode V5 and diode V6.
2. communication interface as described in claim 1, which is characterized in that the signal of communication protection sub-circuit includes gas
Discharge tube FV5, current-limiting resistance R1, R2, two-way Transient Suppression Diode VD7 and diode V17~V22；
The first end and second end of the gas-discharge tube FV5 bridges covered wire on the front panel or magnetite and rear panel quilt respectively
Between multiple line or two signal lines of magnetite, third terminates protecting field；Pass through the current-limiting resistance after diode V17, V18 series connection
R1, R2 are connected across between two signal lines, are connected across between two signal lines after diode V19, V20 series connection, diode V21's
Anode is connected with the common end of diode V17, V18, and the cathode of diode V22 is connected with the common end of diode V19, V20；Institute
The one end for stating two-way Transient Suppression Diode VD7 is connected with the common end of diode V17, V18, the other end and diode V19,
The common end of V20 is connected.
3. communication interface as claimed in claim 2, which is characterized in that the power supply signal protection sub-circuit includes current limliting
Resistance R3, R4, R5, two-way Transient Suppression Diode VD8, VD9, VD10, bridge rectifier and photoelectrical coupler；
Front on board supply mouth and rear panel power port are connected across after the two-way Transient Suppression Diode VD8 and VD9 series connection
Between two signal lines, one end of the two-way Transient Suppression Diode VD10 is with two-way Transient Suppression Diode VD8's and VD9
Common end is connected, other end ground connection；The first end of the bridge rectifier and third end and two-way Transient Suppression Diode VD8
And VD9 is arranged in parallel between two signal lines, second end and the 4th end are connected with the input terminal of the photoelectrical coupler.
4. communication interface as claimed in claim 3, which is characterized in that the day feedback signal protection sub-circuit includes gas
The first end and second end bridging radio frequency mouth on the front panel or video port of discharge tube FV6, the gas-discharge tube FV6 are with after
Between two signal lines of radio frequency mouth or video port on panel, third terminates protecting field.
5. such as the described in any item communication interfaces of Claims 1 to 4, which is characterized in that it further include shield, the protection
The side of cover is fixed on the plane on frame and relative to front panel and can be rotated；The two sides of shield, which are respectively provided with, to be made to protect
Cover sets up supporting plate on the front panel at an angle.
6. communication interface as claimed in claim 5, which is characterized in that be additionally provided with headlamp and switch on the front panel
Button.
7. communication interface as claimed in claim 6, which is characterized in that the hold-down support is close to one end end of rear panel
Several through-holes are offered on face, interior various signal cables pass through the through-hole and access rear panel.
8. communication interface as claimed in claim 7, which is characterized in that the hold-down support uses sheet metal structure, with aluminium
Profile makees frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810321392.XA CN108666805B (en) | 2018-04-11 | 2018-04-11 | A kind of communication interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810321392.XA CN108666805B (en) | 2018-04-11 | 2018-04-11 | A kind of communication interface |
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| Publication Number | Publication Date |
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| CN108666805A CN108666805A (en) | 2018-10-16 |
| CN108666805B true CN108666805B (en) | 2019-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810321392.XA Active CN108666805B (en) | 2018-04-11 | 2018-04-11 | A kind of communication interface |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2599821Y (en) * | 2003-01-29 | 2004-01-14 | 烽火通信科技股份有限公司 | Multichannel signal port thunder-proof adapter |
| CN1851986A (en) * | 2005-04-22 | 2006-10-25 | 王德言 | Thunder-proof wallf-panel socket |
| CN203456638U (en) * | 2013-07-31 | 2014-02-26 | 香镜昌 | A wall switch socket with tempered glass panel and lightning protection device |
| CN203721950U (en) * | 2014-03-12 | 2014-07-16 | 张日如 | Safety socket |
| CN103986148A (en) * | 2014-06-03 | 2014-08-13 | 上海电机学院 | A Lightning Protection Circuit for RS485 Communication Line |
| CN204464660U (en) * | 2014-12-09 | 2015-07-08 | 重庆市都宝电子制造有限公司 | Sound control power socket |
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2018
- 2018-04-11 CN CN201810321392.XA patent/CN108666805B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2599821Y (en) * | 2003-01-29 | 2004-01-14 | 烽火通信科技股份有限公司 | Multichannel signal port thunder-proof adapter |
| CN1851986A (en) * | 2005-04-22 | 2006-10-25 | 王德言 | Thunder-proof wallf-panel socket |
| CN203456638U (en) * | 2013-07-31 | 2014-02-26 | 香镜昌 | A wall switch socket with tempered glass panel and lightning protection device |
| CN203721950U (en) * | 2014-03-12 | 2014-07-16 | 张日如 | Safety socket |
| CN103986148A (en) * | 2014-06-03 | 2014-08-13 | 上海电机学院 | A Lightning Protection Circuit for RS485 Communication Line |
| CN204464660U (en) * | 2014-12-09 | 2015-07-08 | 重庆市都宝电子制造有限公司 | Sound control power socket |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108666805A (en) | 2018-10-16 |
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