CN108666805A - A kind of communication interface - Google Patents
A kind of communication interface Download PDFInfo
- Publication number
- CN108666805A CN108666805A CN201810321392.XA CN201810321392A CN108666805A CN 108666805 A CN108666805 A CN 108666805A CN 201810321392 A CN201810321392 A CN 201810321392A CN 108666805 A CN108666805 A CN 108666805A
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- Prior art keywords
- diode
- signal
- front panel
- signal wire
- interface
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Classifications
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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
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 the ladder-like rectangular configuration of one end open, and front panel is arranged in the open end of hold-down support, 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 by protection circuit between front panel and rear panel；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 technology
Indirect lightning strike invades equipment by the circuit of open air transmission information, makes to be serially connected among circuit 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 operating personnel 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 technology requirement 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 for realizing traffic guidance
Outside the interior signaling transfer point with the various transmission signals outside vehicle, it is necessary to the protective action for having anti-induction lightning stroke, to connecting outside 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 be protected 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 the multi-signal that can not be received to vehicular communication equipment carries out while locating
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 scenario 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.
Invention content
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 the ladder-like rectangular configuration of one end open, and front panel is arranged in the open end of hold-down support, frame
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 by the protection circuit between plate and rear panel；
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 day feedback signal to being inputted outside vehicle
Carry out lightning-arrest be filtered；Each protection sub-circuit is all made of modularized design, and hold-down support is internally provided with several and is respectively used to
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 protective cover, the side of protective cover be fixed on frame and relative to
The plane of front panel is rotatable；The both sides of protective cover, which are respectively provided with, makes protective cover be erected on front panel at an angle
Support 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 to access rear panel.
Preferably, above-mentioned communication interface, hold-down support use sheet metal structure, make frame with aluminium section bar.
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
In front between the first signal wire on plate 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；It is connected across third signal wire and the 6th signal wire 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 is connected across covered wire or magnetite and rear panel quilt on front panel respectively
Between multiple line or two signal lines of magnetite, third terminates protecting field；After diode V17, V18 series connection 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；
It is connected across front on board supply mouth and rear panel power port 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
The first end and second end of fulgurite FV6 is connected across radio frequency mouth or video on radio frequency mouth or the video port and rear panel on 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, and safeguard volume is reduced while realizing lighting protection；Various protection circuits are solid
Determine to design using division moduleization inside bearing, 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, it is simple in structure 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 structure designs such as protective cover, headlamp are crossed, the requirements such as rain-proof, sludge splashing-proof, night illumination can be met, improve vehicle-mounted commander
The all weather operations ability of communication system.
Description of the drawings
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 reference numeral indicates identical technical characteristic, specially：1- front panels, behind 2-
Plate, 3- frames, 4- hold-down supports, 5- protective covers, 6- support plates.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be 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
It does not constitute a conflict with each other and 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 the ladder-like rectangular configuration of one end open, and the opening in 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 outside vehicle connects with the communication
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 to access rear panel 2；Such as
Shown in Fig. 4, the centre of hold-down support 4 is provided with an ellipse hole, and the both sides of the ellipse hole offer a circle and lead to respectively
Hole is additionally provided with the earthing rod for fixing ground wire on rear panel, ensures 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；
Hold-down support 4 is internally provided with several guide rails for being respectively used to place different protection circuits, and each protection circuit passes through
Conducting resinl is bonded on corresponding guide rail and passes through screw lock；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 aluminium section bar, under the premise of meeting intensity requirement, alleviator
Weight；Aluminium section bar is matched with the fillet of sheet metal structure stretching the fillet generated involved in process, keeps the communication interface simple
Clean beauty；By screw lock between front panel 2 and hold-down support 4, front panel 1 is made to be reliably fixed, it is easy to operation；
As a preferred embodiment, which further includes protective cover 5, and the side of the protective cover 5 is fixed
On frame 3, and the plane relative to front panel 1 is rotatable；The both sides of protective cover 5 are respectively equipped with a support plate 6, which uses
In making protective cover 5 be erected 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 requirements 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 connecting Lightning Electromagnetic Pulse (LEMP) dry scratch that transmission cable introduces 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
Be connected on the 1st signal wire in network interface on front panel 1 (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 for providing current drain access, 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, and network interface on front panel 1 is connected across 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 on front panel 1 in 2 network interface of network interface and rear panel are connected across after diode V5, V6 series connection
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 moon 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 settings are in the 7th letter
Number between line and the 8th signal wire, specific connection relation is identical as diode V1~V4, and details are not described herein again；The second level is protected
Circuit is mainly used for the overvoltage of input signal being limited 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 standards.
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；One end of two-way Transient Suppression Diode VD7 and the common end phase of 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 is by 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, and the overvoltage of input signal is limited in safe range；
Residual voltage is restricted to meet the range of IEC/EN61643 testing standards 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；
It is connected across 2 power port of power port and rear panel on front panel 1 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 standards, then passes through bridge rectifier and carry out rectification processing, finally pass through light
Electric coupler exports, and 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, which is connected across on front panel 1, 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 directed to the difference of various transmission signals
Characteristic is respectively handled it using different protection circuits, and safeguard body is reduced 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, it is simple in structure 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, all within the spirits and principles of the present invention made by all any modification, equivalent and improvement etc., should all include
Within protection scope of the present invention.
Claims (9)
1. a kind of communication interface, which is characterized in that including front panel, rear panel, frame, hold-down support, and positioned at solid
Determine the protection circuit inside bearing；
The hold-down support is the ladder-like rectangular configuration of one end open, and the front panel is arranged in the open end of hold-down support,
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
It is lightning-arrest to be filtered；The hold-down support is internally provided with several guide rails, using each protection sub-circuit point of modularized design
It is not fixed on the guide rail.
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 is connected across covered wire or magnetite and rear panel quilt on front panel 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 1 or 2, which is characterized in that 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 that are 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；It is connected across third signal wire and the 6th signal wire 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.
4. communication interface as claimed in claim 3, 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；
It is connected across front on board supply mouth and rear panel power port 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.
5. communication interface as claimed in claim 4, which is characterized in that the day feedback signal protection sub-circuit includes gas
The first end and second end of discharge tube FV6, the gas-discharge tube FV6 are connected across the radio frequency mouth on front panel or video port with after
Between two signal lines of radio frequency mouth or video port on panel, third terminates protecting field.
6. such as Claims 1 to 5 any one of them communication interface, which is characterized in that further include protective cover, the protection
The plane that the side of cover is fixed on frame and relative to front panel is rotatable；The both sides of protective cover, which are respectively provided with, makes protection
Cover is erected at the support plate on front panel at an angle.
7. communication interface as claimed in claim 6, which is characterized in that be additionally provided with headlamp and switch on the front panel
Button.
8. communication interface as claimed in claim 7, 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 to access rear panel.
9. communication interface as claimed in claim 8, which is characterized in that the hold-down support uses sheet metal structure, with aluminium
Proximate matter 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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| CN108666805A true CN108666805A (en) | 2018-10-16 |
| CN108666805B CN108666805B (en) | 2019-11-05 |
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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 |
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| 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 | Wall switch socket with toughened glass panel having 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 | Lightning protection circuit of 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 | Wall switch socket with toughened glass panel having 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 | Lightning protection circuit of 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 |
|---|---|
| CN108666805B (en) | 2019-11-05 |
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