CN207381969U - HD video multichannel surge protector - Google Patents

Abstract

The utility model discloses a kind of HD video multichannel surge protector; including input terminal adapter and output terminal adapter; it is connected between input terminal adapter and the output corresponding connector of terminal adapter by conducting wire; the conducting wire includes signal wire and shielding earth; resistance is serially connected on signal wire; resistance both ends are simultaneously connected to discharge paths; discharge paths include discharge tube and diode; discharge tube and diode are connected to shielding earth; concatenated filter between signal wire and shielding earth, shielding earth are connected to lightning protection by discharge tube.The utility model can provide effective thunder-lightning, anti-overvoltage protection for HD video channel transmission, and solve the problems, such as that the wave distortion generated in transmission of video and interchannel generate interference.

Description

HD video multichannel surge protector

Technical field

The utility model is related to a kind of lightning arrester for HD video channel transmission, specifically a kind of high definitions Video multichannel surge protector.

Background technology

In recent years, the development of video delivery network technology is especially rapid, and transmission is passed from single channel to single channel multi signal It is defeated, it still cannot meet the requirements, now develop into multichannel networkization transmission.The networks such as video conferencing system, video monitoring system Also come into operation.

Must be noted that any factor that may limit network performance while video network is set up, should more prevent by Equipment damage is caused in electromagnetic interferences such as lightning stroke, indirect lightning strike, power supply sharp waves, massive losses caused by network paralysis.Although Lightning protection device is mounted on the external lead-in road such as power supply and communication line, due to grid line when lightning stroke occurs（It is such as more Core cable）The overvoltage sensed, the normal operation that can influence network even thoroughly destroy network system.Although video network is big Part is transmitted indoors, but the huge transient magnetic field generated when occurring that is struck by lightning, and still can sense extremely strong inductive lightning electric current；When Power cord or communication line come to be struck by lightning voltage when or sense, capacitive load（Such as air conditioner）It is normal to start when shutting down or insert Unplugg can also generate the sensing overvoltage differed in size accordingly；Also the earth system of building is in bleed off lightning current, institute The transient electromagnetic field of generation, for network transmission line, the overvoltage sensed has been enough disposably to destroy network system System.Multicore cable is to apply most modes at present.

Since multicore cable shield effectiveness is poor, the possibility of indirect lightning strike is bigger, for crossing over room, approaching Window is both needed to installation siganl thunder-proof device between outdoor equipment, is attached thereto with the overvoltage damage for preventing multicore cable from introducing Equipment.The support platform that the comprehensive wiring of intelligent building is the communication network of intelligent building and the office automation system is set up. The microelectronic device of information system used by it, composition step into the form based on large scale integrated circuit.Chip is increasingly It is small, function is more and more stronger, and the horizontal linear of whole resistance to overvoltage, resistance to overcurrent declines, pressure-resistant only several volts of equipment, more than ten Volt.Thus to surge voltage（SURGE）Requirement of shelter it is also higher and higher.The moments mistakes such as lightning stroke, indirect lightning strike, power supply sharp wave Voltage has become the maximum hidden danger for destroying network electronic devices.

The content of the invention

The technical problem to be solved by the present invention is to provide a kind of HD video special multichannel surge protectors, it can To provide effective thunder-lightning, anti-overvoltage protection for HD video channel transmission, and solve the ripple generated in transmission of video Shape distorts and interchannel leads to the problem of interference.

In order to solve the technical problem, the technical solution adopted in the utility model is：A kind of HD video multichannel Surge protector, including input terminal adapter and output terminal adapter, input terminal adapter and output terminal adapter are corresponding It is connected between connector by conducting wire, the conducting wire includes signal wire and shielding earth, and resistance, resistance both ends are serially connected on signal wire And discharge paths are connected to, discharge paths include discharge tube and diode, and discharge tube and diode are connected to shielding earth, signal Concatenated filter between line and shielding earth, shielding earth are connected to lightning protection by discharge tube.

HD video described in the utility model multichannel surge protector, discharge tube are connected to resistance and are connected with input terminal Between device, the two end electrodes of discharge tube are connected respectively with the signal input part on input terminal adapter, the target of discharge tube It is connected to shielding earth.

HD video described in the utility model multichannel surge protector, the input terminal adapter are connected with output terminal 24 connectors are equipped on device, wherein it is signal wire to be connected between 18 butt joints, it is shielding ground to be connected between 4 butt joints Line.

HD video described in the utility model multichannel surge protector, diode be located at per signal line resistance with Between shielding earth, diode is using the structure for being grouped matrix form connection.

HD video described in the utility model multichannel surge protector, per signal line input terminal and No. 1, No. 2, The output terminal of No. 13, No. 17 signal wires concatenated filter between shielding earth.

HD video described in the utility model multichannel surge protector, input terminal adapter and output terminal adapter are equal For DVI connector, input between terminal adapter and output terminal adapter and use DVI connecting communications.

HD video described in the utility model multichannel surge protector, 18 signal lines include 3 power deliveries Line.

HD video described in the utility model multichannel surge protector further includes housing, and housing is equipped with ground terminal, Input terminal adapter, output terminal adapter are located on housing, and conducting wire, resistance, discharge tube and diode, wave filter are located at housing Interior, lightning protection is connected with ground terminal.

The beneficial effects of the utility model：The utility model can filter out what is generated in network by thunder and lightning or other reasons Overvoltage and overcurrent, effectively protection are using HD video channel transmission net from the dry of thunder and lightning and other magnetic fields, electric field etc. It disturbs and destroys.It solves the problems, such as that the wave distortion generated in transmission of video and interchannel generate interference, not only ensure that image Fidelity also solves the issuable overvoltage injury of transmission network simultaneously, improves the security of equipment operation.

Description of the drawings

Fig. 1 is the circuit diagram of the utility model；

In figure：1st, terminal adapter is inputted, 2, discharge tube, 3, resistance, 4, diode, 5, output terminal adapter, 6, wave filter.

Specific embodiment

The utility model is further described in the following with reference to the drawings and specific embodiments.

As shown in Figure 1, be the circuit diagram of HD video multichannel surge protector described in the utility model, including Terminal adapter 1 and output terminal adapter 5 are inputted, inputs between terminal adapter 1 and output 5 corresponding connector of terminal adapter and passes through Conducting wire connects, and the conducting wire includes signal wire and shielding earth, is serially connected with resistance 3 on signal wire, 3 both ends of resistance are simultaneously connected to electric discharge Branch, discharge paths include discharge tube 2 and diode 4, and discharge tube 2 and diode 4 are connected to shielding earth, signal wire and screen Concatenated filter 6 between ground wire is covered, shielding earth is connected to lightning protection by discharge tube Q10.Conducting wire, resistance and discharge paths Form anti-surge protecting circuit.

In the present embodiment, 24 connectors are equipped on the input terminal adapter 1 and output terminal adapter 2, wherein 18 pairs It is signal wire to be connected between connector, and it is shielding earth to be connected between 4 butt joints.Discharge tube 2 is connected to resistance 3 and input terminal Between connector 1, the two end electrodes of discharge tube 2 are connected respectively with the signal input part on input terminal adapter 1, discharge tube 2 Target is connected to shielding earth.Diode is located between the resistance and shielding earth per signal line, and diode, which uses, to be divided The structure of group matrix form connection.

In the present embodiment, per signal line input terminal and No. 1, No. 2, No. 13, No. 17 signal wire output terminal with screen Cover concatenated filter 6 between ground wire, wave filter is disturbed for eliminating between line, and make HD video multichannel surge protector from Extraneous electromagnetic interference, Electro Magnetic Compatibility higher.

HD video described in the present embodiment further includes housing with multichannel surge protector, and housing is equipped with ground terminal, defeated Enter terminal adapter, output terminal adapter be located on housing, conducting wire, resistance, discharge tube and diode are located in housing, lightning protection It is connected with ground terminal.

In the present embodiment, 18 signal lines include 3 power transmission lines, are respectively 14,15, No. 16 signal wires, are used for It transmits VCC+, VCC-and VCC is spare.

When network is because of lightning stroke or other reasons generation overcurrent, larger electric current is filtered out by discharge tube 2, then is passed through The metering function of current-limiting resistance 3 filters off the overcurrent in network, and extra electric current is discharged by diode 4, so as to ensure net Network equipment is not damaged and normal operation.

As shown in Figure 1, four bonding lines merge into one group, are connected to lightning protection by discharge tube Q10, lightning protection connects Ground connection the earth, in the case where lightning protection has high potential so that surge protector ground wire will not be by surge protection Voltage on device ground wire, which is applied in protection equipment, to be applied to, to be consistently equal to lightning protection component by the voltage in protection equipment and leads /V voltage when logical realizes the elimination to being grounded both end voltage on surge protector.

In the present embodiment, the specific connection mode of grouping matrix form diode is, Line 1 connection diode D1 in parallel, The anode of D4, No. 2 lines connection D2, D3 in parallel, D1, D2 by diode D5 are connected to No. 3 shielding earths after linking together, The cathode of D3, D4 by diode D6 are connected to No. 3 shielding earths after linking together, the anode of D1, D2 and the cathode of D3, D4 Between be connected with Transient Suppression Diode TVS1.Diode D10, D11 of No. 4 line connection parallel connections, No. 5 lines connections D9 in parallel, The anode of D12, D9, D10 by diode D7 are connected to No. 3 shielding earths after linking together, and the cathode of D11, D12 are connected to No. 3 shielding earths are connected to by diode D8 afterwards together, transient state is connected between the anode of D9, D10 and the cathode of D11, D12 Inhibit diode TVS2.No. 6 line connections diode D13, D16 in parallel, No. 7 lines connect D14, D15 in parallel, D13, D14's Anode by diode D17 is connected to No. 11 shielding earths after linking together, and the cathode of D15, D16 passes through after linking together Diode D18 is connected to No. 11 shielding earths, and transient state is connected between the anode of D13, D14 and the cathode of D15, D16 and inhibits two Pole pipe TVS3.No. 9 line connections diode D19, D22 in parallel, No. 2 lines connect D20, D21 in parallel, and the anode of D19, D20 connect No. 11 shielding earths are connected to by diode D23 after being connected together, the cathode of D21, D22 passes through diode after linking together D24 is connected to No. 11 shielding earths, and Transient Suppression Diode is connected between the anode of D19, D20 and the cathode of D21, D22 TVS4.No. 12 line connections diode D28, D29 in parallel, No. 13 lines connect D27, D30 in parallel, the anode connection of D27, D28 No. 11 shielding earths are connected to by diode D25 afterwards together, the cathode of D29, D30 passes through diode after linking together D26 is connected to No. 11 shielding earths, and Transient Suppression Diode is connected between the anode of D27, D28 and the cathode of D29, D30 TVS5.No. 17 line connections diode D31, D34 in parallel, No. 2 lines connect D32, D33 in parallel, and the anode of D31, D32 are connected to No. 19 shielding earths are connected to by diode D35 afterwards together, the cathode of D33, D34 link together after by diode D36 No. 19 shielding earths are connected to, Transient Suppression Diode TVS6 is connected between the anode of D31, D32 and the cathode of D33, D34. No. 20 line connections diode D40, D41 in parallel, No. 21 lines connect D39, D42 in parallel, and the anode of D39, D40 link together No. 19 shielding earths are connected to by diode D37 afterwards, the cathode of D41, D42 is connected after linking together by diode D38 To No. 19 shielding earths, Transient Suppression Diode TVS7 is connected between the anode of D39, D40 and the cathode of D41, D42.No. 14 Line connection in parallel diode D43, D46, No. 15 lines connections D44, D45 in parallel, the anode of D43, D44 lead to after linking together It crosses diode D47 and is connected to No. 22 shielding earths, the cathode of D45, D46 by diode D48 is connected to 22 after linking together Number shielding earth, is connected with Transient Suppression Diode TVS8 between the anode of D43, D44 and the cathode of D45, D46.No. 23 lines connect Meet in parallel diode D53, D54, No. 24 lines connections D52, D55 in parallel, No. 16 lines connections D51, D56 in parallel, D51, The anode of D52, D53 by diode D49 are connected to No. 22 shielding earths after linking together, and the cathode of D54, D55, D56 connect No. 55 shielding earths, the anode of D51, D52, D53 and bearing for D54, D55, D56 are connected to by diode D50 after being connected together Transient Suppression Diode TVS9 is connected between pole.

Described above is only the basic principle and preferred embodiment of the utility model, and those skilled in the art are according to this reality With the new improvement and replacement made, belong to the scope of protection of the utility model.

Claims (8)

1. a kind of HD video multichannel surge protector, it is characterised in that：It is connected including input terminal adapter with output terminal Device is inputted between terminal adapter and the output corresponding connector of terminal adapter and connected by conducting wire, and the conducting wire includes signal wire And shielding earth, resistance is serially connected on signal wire, and resistance both ends are simultaneously connected to discharge paths, and discharge paths include discharge tube and two poles Pipe, discharge tube and diode are connected to shielding earth, and concatenated filter between signal wire and shielding earth, shielding earth passes through Discharge tube is connected to lightning protection.

2. HD video according to claim 1 multichannel surge protector, it is characterised in that：Discharge tube is connected to electricity Between resistance and input terminal adapter, the two end electrodes of discharge tube are connected respectively with the signal input part on input terminal adapter, put The target of fulgurite is connected to shielding earth.

3. HD video according to claim 1 multichannel surge protector, it is characterised in that：The input terminal connection 24 connectors are equipped on device and output terminal adapter, wherein it is signal wire to be connected between 18 butt joints, are connected between 4 butt joints It is shielding earth to connect.

4. the HD video multichannel surge protector according to claim 1 or 3, it is characterised in that：Diode is located at Between resistance and shielding earth per signal line, diode is using the structure for being grouped matrix form connection.

5. HD video according to claim 3 multichannel surge protector, it is characterised in that：It is defeated per signal line Enter end and No. 1, No. 2, No. 13, No. 17 signal wire output terminal between shielding earth concatenated filter.

6. HD video according to claim 1 multichannel surge protector, it is characterised in that：Input terminal adapter and It is DVI connector to export terminal adapter, inputs between terminal adapter and output terminal adapter and uses DVI connecting communications.

7. HD video according to claim 3 multichannel surge protector, it is characterised in that：It is wrapped in 18 signal lines Include 3 power transmission lines.

8. HD video according to claim 1 multichannel surge protector, it is characterised in that：Further include housing, shell Body be equipped with ground terminal, input terminal adapter, output terminal adapter be located on housing, conducting wire, resistance, discharge tube, diode and Wave filter is located in housing, and lightning protection is connected with ground terminal.