CN202503276U - Double grounding end video image interference resistance type video signal three-in-one lightning protection device - Google Patents
Double grounding end video image interference resistance type video signal three-in-one lightning protection device Download PDFInfo
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- CN202503276U CN202503276U CN2012200661142U CN201220066114U CN202503276U CN 202503276 U CN202503276 U CN 202503276U CN 2012200661142 U CN2012200661142 U CN 2012200661142U CN 201220066114 U CN201220066114 U CN 201220066114U CN 202503276 U CN202503276 U CN 202503276U
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Abstract
The utility model discloses a double grounding end video image interference resistance type video signal three-in-one lightning protection device. The lightning protection device comprises a lightning protection device body and is characterized in that a first grounding end and a second grounding end are arranged on one side of the lightning protection device body, wherein the first grounding end and the second grounding end are connected via an electronic circuit module containing a gas discharge tube. A BNC interface, a binding post connected with a 485 communication circuit and a power circuit interface are arranged on both sides of the lightning protection device body. The two sides are the input end and the output end of the lightning protection device. The BNC interface is connected with a video circuit. The binding post connected with the 485 communication circuit is connected with a control circuit. The gas discharge tube has the functions of lightning transient over-current discharging and over-voltage limiting. According to the utility model, the technique of double grounding ends is adopted, thus the potential difference between a camera and a host can be effectively eliminated, and the image interference can be prevented.
Description
Technical field
The utility model relates to the three-in-one lightning protection device of a kind of vision signal, particularly relates to the anti-three-in-one lightning protection device of video image interference type vision signal of a kind of pair of ground connection.
Background technology
The three-in-one integrated form vision signal lightning protection device (calling " the three-in-one lightning protection device of vision signal " in the following text) that possesses video line, control line, power circuit lightning protection simultaneously is the lightning-protected product of tailoring according to the concrete characteristics of video camera in lightning protection requirement and the supervisory control system, is applicable to power circuit, the control line of the equipment such as video camera of intelligent high-speed ball machine, band cloud platform in the supervisory control system, the lightning protection of video line.The three-in-one lightning protection device of vision signal in the market; When video camera and main frame are taked independent grounding, owing to can have potential difference between the different separate earth electrode, separate ground electrodes of the ground connection of main frame and video camera, maybe tens volts; Even last hectovolt; And the grounding system of lightning protection device itself makes to have formed between main frame ground connection and the video camera ground connection and is electrically connected, thereby may cause video image serious image disruption such as striped, distortion, shake even equipment burnout phenomenon to occur.This defective of the three-in-one lightning protection device of above-mentioned vision signal need solve through technological improvement.
The utility model content
The utility model technical issues that need to address provide a kind of can effectively the obstruct between video camera and the main frame and are electrically connected, and prevent the three-in-one lightning protection device of anti-image disruption type vision signal that video pictures is disturbed.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of pair of anti-three-in-one lightning protection device of video image interference type vision signal of ground connection; Comprise the lightning protection device body; A side that it is characterized in that the lightning protection device body has earth terminal one and earth terminal two, connects through the electronic circuit module that contains gas discharge tube between earth terminal one and the earth terminal two; There is bnc interface described lightning protection device body both sides, connects the binding post and the power circuit interface of 485 communication lines.These both sides are input and outputs of lightning protection device, and bnc interface connects video line, and the binding post that connects 485 communication lines connects control circuit, and gas discharge tube has the effect of release thunder and lightning transient state overcurrent and over-voltage.
When the utility model uses, can be applicable to two kinds of following situation:
The first, when video camera adopts the independent grounding mode to install, earth terminal one is connected separate earth electrode, separate ground electrode; Like ground stud equipment, earth terminal two is connected camera housing, be provided with the electronic circuit module that contains the gas discharge tube between earth terminal one and the earth terminal two; This module to earth terminal one and earth terminal two these two independently grounding system electrify air bound from effect; Both guaranteed in time releasing of thunder and lightning, and also prevented to produce electric effect between video camera and the main frame, and caused video image to produce and disturb.
The second, when adopting the independent earthing mode, installs by video camera, when both video camera and main frame adopt same grounding system; Earth terminal two is connected to camera housing; Be connected in the lump in the grounding system of main frame again and get final product, and earth terminal shields first and do not use, its lightning protection principle is identical with prior art.
Compared with prior art, the utlity model has two grounding functions, can be suitable for the situation that the video camera independent grounding is installed, also can be applicable to the situation that the video camera independent is installed, applied widely, and can effectively prevent to look screen image and disturbed.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the earthed circuit schematic diagram of prior art.
The utility model earthed circuit schematic diagram when Fig. 3 is the video camera independent grounding.
Embodiment
Further specify the technical scheme of the utility model below in conjunction with accompanying drawing and embodiment.
In conjunction with Fig. 1; The utility model has related to the anti-three-in-one lightning protection device of video image interference type vision signal of a kind of pair of ground connection, comprising: the binding post 6 of lightning protection device body 1, earth terminal 1, earth terminal 23, bnc interface 4, power circuit interface 5, connection 485 communication lines; Earth terminal 1 and earth terminal 23 are arranged on a side of lightning protection device body 1; Bnc interface 4, power circuit interface 5 and the binding post 6 that connects 485 communication lines are arranged on the vertical two ends of a side at lightning protection device body 1 and earth terminal place; Bnc interface 4 connects video line; Power circuit interface 5 also for connecting the binding post of 485 communication lines, connects power circuit; The binding post 6 that connects 485 communication lines connects control circuits, in conjunction with Fig. 3, is connected through the electronic circuit module that contains the gas discharge tube between earth terminal one and the earth terminal two.When the utility model uses; Divide two kinds of situation: when video camera taked the independent grounding mode to install, earth terminal 23 connected camera housing, and earth terminal 1 connects separate earth electrode, separate ground electrode; Like ground stud equipment, the electronic circuit module between earth terminal 1 and the earth terminal 23 plays the effect of electrical isolation; When video camera adopted the mode of independent ground connection to install, earth terminal 23 connected camera housing, together is connected to the grounding system of main frame again, and earth terminal one 2 shieldings are not used.Compared with prior art, the utility model is taked two grounding technologies, and is applied widely, prevents that image from disturbing.
Claims (1)
1. two ground connection are prevented the three-in-one lightning protection device of video image interference type vision signal; Comprise the lightning protection device body; A side that it is characterized in that the lightning protection device body has earth terminal one and earth terminal two, connects through the electronic circuit module that contains gas discharge tube between earth terminal one and the earth terminal two; There is bnc interface described lightning protection device body both sides, connects the binding post and the power circuit interface of 485 communication lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200661142U CN202503276U (en) | 2012-02-24 | 2012-02-24 | Double grounding end video image interference resistance type video signal three-in-one lightning protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200661142U CN202503276U (en) | 2012-02-24 | 2012-02-24 | Double grounding end video image interference resistance type video signal three-in-one lightning protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202503276U true CN202503276U (en) | 2012-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200661142U Expired - Fee Related CN202503276U (en) | 2012-02-24 | 2012-02-24 | Double grounding end video image interference resistance type video signal three-in-one lightning protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202503276U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113036920A (en) * | 2021-03-10 | 2021-06-25 | 广东电网有限责任公司电力调度控制中心 | Transformer substation video monitoring system and protective box thereof |
-
2012
- 2012-02-24 CN CN2012200661142U patent/CN202503276U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113036920A (en) * | 2021-03-10 | 2021-06-25 | 广东电网有限责任公司电力调度控制中心 | Transformer substation video monitoring system and protective box thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121024 Termination date: 20150224 |
|
| EXPY | Termination of patent right or utility model |