CN201994651U - Lightning protection control panel and lightning protection camera device - Google Patents
Lightning protection control panel and lightning protection camera device Download PDFInfo
- Publication number
- CN201994651U CN201994651U CN2011200675070U CN201120067507U CN201994651U CN 201994651 U CN201994651 U CN 201994651U CN 2011200675070 U CN2011200675070 U CN 2011200675070U CN 201120067507 U CN201120067507 U CN 201120067507U CN 201994651 U CN201994651 U CN 201994651U
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- lightning protection
- resettable fuse
- video signal
- protection control
- control board
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Abstract
The utility model discloses a lightning protection control panel and a lightning protection camera device. The lightning protection control panel comprises a power cord, a video signal line, a grounding line, a first resettable fuse, a second resettable fuse, a transient voltage suppressor and an electrostatic release device, wherein the first resettable fuse is connected in series on the power cord, the second resettable fuse is connected in series on the video signal line, the transient voltage suppressor is connected between the power cord and the grounding line, and the electrostatic release device is connected between the video signal line and the grounding line. The utility model can effectively prevent a monitoring camera from being damaged by overvoltage and surge which are caused by lightning stroke, and improve the reliability of the monitoring camera.
Description
Technical field
The utility model relates to electronic technology field, relates in particular to a kind of lightning protection control board and lightning protection camera system.
Background technology
The power input of rig camera is in series with fuse, and fuse can be after current anomaly be elevated to certain altitude and certain time, self fuses and cuts off electric current, thereby play the effect of protective circuit safe operation.
Thunder and lightning destroys microelectronic device easily, and the approach of introducing thunder and lightning has power supply, transmission network and outdoor unit to draw thunder etc.For rig camera, the thunderbolt meeting causes transient overvoltage on the power supply of rig camera and video line.Though the power input of rig camera is in series with fuse; but because fuse only just plays a protective role in long-time overvoltage; therefore the transient overvoltage that causes of thunder and lightning can directly be added in voltage on the components and parts by fuse, burns the components and parts of rig camera mainboard easily.
Summary of the invention
The utility model embodiment provides a kind of lightning protection control board, can prevent from effectively the to be struck by lightning overvoltage that causes, the destruction that surge produces rig camera, the reliability of raising rig camera.
The lightning protection control board that the utility model embodiment provides comprises power line, video signal cable, earth connection, first resettable fuse, second resettable fuse, Transient Voltage Suppressor and electrostatic releaser;
Wherein, described first resettable fuse is connected on the described power line; Described second resettable fuse is connected on the described video signal cable; Described Transient Voltage Suppressor is connected between described power line and the described earth connection; Described electrostatic releaser is connected between described video signal cable and the described earth connection.
Correspondingly, the utility model embodiment also provides a kind of lightning protection camera system, comprises rig camera and lightning protection control board;
Described rig camera comprises power input, VT, earth terminal;
Described lightning protection control board comprises power line, video signal cable, earth connection, first resettable fuse, second resettable fuse, Transient Voltage Suppressor and electrostatic releaser; Described first resettable fuse is connected on the described power line; Described second resettable fuse is connected on the described video signal cable; Described Transient Voltage Suppressor is connected between described power line and the described earth connection; Described electrostatic releaser is connected between described video signal cable and the described earth connection;
Described power input is connected with described power line, and described VT is connected with described video signal cable, and described earth terminal is connected with described earth connection.
Further, described first resettable fuse, described second resettable fuse are high molecular polymer positive coefficient temperature and resistance.
The lightning protection control board that the utility model embodiment provides can be applied in the rig camera; make the power supply input and the vision signal output of rig camera all pass through this lightning protection control board; the transient overvoltage that thunder and lightning can the be caused ground of releasing fast; thereby the components and parts of protection rig camera mainboard are not burnt; improved the reliability of video camera, and this lightning protection control board has and the easy-on advantage simple in structure.The lightning protection camera system that the utility model embodiment provides has the lightning protection control board, overvoltage, the surge that can prevent from effectively to be struck by lightning and cause, reliability height.
Description of drawings
Fig. 1 is the circuit theory diagrams of an embodiment of the lightning protection control board that provides of the utility model;
Fig. 2 is the structural representation of an embodiment of the lightning protection camera system that provides of the utility model.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described.
Referring to Fig. 1, be the circuit theory diagrams of an embodiment of the lightning protection control board that provides of the utility model.
The lightning protection control board that present embodiment provides comprises power line Vcc, video signal cable VIDEO, earth connection GND, the first resettable fuse PPTC1, the second resettable fuse PPTC2, Transient Voltage Suppressor TVS(Transient Voltage Suppressor) and electrostatic releaser ESD(Electro-Static discharge);
The first resettable fuse PPTC1 is connected on the power line Vcc; The second resettable fuse PPTC2 is connected on VIDEO on the video signal cable;
Transient Voltage Suppressor TVS is connected between power line Vcc and the earth connection GND; Electrostatic releaser ESD is connected between video signal cable VIDEO and the earth connection GND.
Preferably, the first resettable fuse PPTC1, the second resettable fuse PPTC2 are high molecular polymer positive coefficient temperature and resistance (Polymer Positive Temperature coefficient is called for short PPTC).
The lightning protection control board that the utility model embodiment provides can be applied in the rig camera; make the power supply input and the vision signal output of rig camera all pass through this lightning protection control board; the transient overvoltage that thunder and lightning can the be caused ground of releasing fast; thereby the components and parts of protection rig camera mainboard are not burnt, and have improved the reliability of video camera.
Referring to Fig. 2, be the structural representation of an embodiment of the lightning protection camera system that provides of the utility model.The lightning protection camera system that present embodiment provides has the lightning protection control board, overvoltage, the surge that can prevent from effectively to be struck by lightning and cause, reliability height.
As shown in Figure 2, this lightning protection camera system comprises rig camera and lightning protection control board;
Wherein, rig camera comprises power input, VT, earth terminal;
The lightning protection control board comprises power line Vcc, video signal cable VIDEO, earth connection GND, the first resettable fuse PPTC1, the second resettable fuse PPTC2, Transient Voltage Suppressor TVS and electrostatic releaser ESD; The first resettable fuse PPTC1 is connected on the power line Vcc; The second resettable fuse PPTC2 is connected on VIDEO on the video signal cable; Transient Voltage Suppressor TVS is connected between power line Vcc and the earth connection GND; Electrostatic releaser ESD is connected between video signal cable VIDEO and the earth connection GND;
The power input of rig camera is connected with the power line Vcc of lightning protection control board; the VT of rig camera is connected with the video signal cable VIDEO of lightning protection control board, and the earth terminal of rig camera is connected with the earth connection GND of lightning protection control board.
Further, the lightning protection camera system that provides of present embodiment also comprises infrared lamp plate.
Preferably, the first resettable fuse PPTC1, the second resettable fuse PPTC2 are high molecular polymer positive coefficient temperature and resistance.
The circuit of the lightning protection control board that the utility model embodiment provides is divided into two parts:
(1) first order protective circuit: the first resettable fuse PPTC1 as shown in Figure 1 and Figure 2, the second resettable fuse PPTC2.First order protection is that limiting voltage is higher, flow-resistant capacity is bigger for thick protection, is installed near the protective device on the circuit point of outside line;
(2) second level protective circuit: Transient Voltage Suppressor TVS as shown in Figure 1 and Figure 2 and electrostatic releaser ESD.Second level protection is thin protection, be that limiting voltage is lower, flow-resistant capacity a little less than, the protective device of circuit protection solid-state components in being used for.
Transient Voltage Suppressor (Transient Voltage Suppressor) is called for short TVS, is a kind of high-effect protection device of diode form.When TVS pipe the two poles of the earth were subjected to reverse transient state high energy impact events, it can be with 10
-12The speed of second-time becomes Low ESR with the high impedance of its two interpolar, absorbs the surge power up to thousands of watts, and the voltage clamp that makes two interpolars is protected the precision components in the electronic circuit effectively in a predetermined value, avoids the damage of various surge pulses.The ESD electrostatic releaser is the permutation of a plurality of TVS pipes, and its function, principle are managed the same with TVS.
Lightning protection circuit is all passed through in the power supply input and the vision signal output of rig camera; power input part divides employing TVS pipe and PPTC resettable fuse to protect; video signal portions adopts ESD electrostatic releaser and PPTC resettable fuse to protect; the transient overvoltage that thunder and lightning can the be caused ground of releasing fast, thus the components and parts of protection rig camera mainboard are not burnt.
The lightning protection control board that the utility model embodiment provides can be applied in the rig camera; make the power supply input and the vision signal output of rig camera all pass through this lightning protection control board; the transient overvoltage that thunder and lightning can the be caused ground of releasing fast; thereby the components and parts of protection rig camera mainboard are not burnt; improved the reliability of video camera, and this lightning protection control board has and the easy-on advantage simple in structure.The lightning protection camera system that the utility model embodiment provides has the lightning protection control board, overvoltage, the surge that can prevent from effectively to be struck by lightning and cause, reliability height.
The above is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also are considered as protection range of the present utility model.
Claims (5)
1. a lightning protection control board is characterized in that, comprises power line, video signal cable, earth connection, first resettable fuse, second resettable fuse, Transient Voltage Suppressor and electrostatic releaser;
Described first resettable fuse is connected on the described power line; Described second resettable fuse is connected on the described video signal cable;
Described Transient Voltage Suppressor is connected between described power line and the described earth connection; Described electrostatic releaser is connected between described video signal cable and the described earth connection.
2. lightning protection control board as claimed in claim 1 is characterized in that, described first resettable fuse, described second resettable fuse are high molecular polymer positive coefficient temperature and resistance.
3. a lightning protection camera system is characterized in that, comprises rig camera and lightning protection control board;
Described rig camera comprises power input, VT, earth terminal;
Described lightning protection control board comprises power line, video signal cable, earth connection, first resettable fuse, second resettable fuse, Transient Voltage Suppressor and electrostatic releaser; Described first resettable fuse is connected on the described power line; Described second resettable fuse is connected on the described video signal cable; Described Transient Voltage Suppressor is connected between described power line and the described earth connection; Described electrostatic releaser is connected between described video signal cable and the described earth connection;
Described power input is connected with described power line, and described VT is connected with described video signal cable, and described earth terminal is connected with described earth connection.
4. lightning protection camera system as claimed in claim 3 is characterized in that, described lightning protection camera system also comprises infrared lamp plate.
5. as claim 3 or 4 described lightning protection camera systems, it is characterized in that described first resettable fuse, described second resettable fuse are high molecular polymer positive coefficient temperature and resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200675070U CN201994651U (en) | 2011-03-15 | 2011-03-15 | Lightning protection control panel and lightning protection camera device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200675070U CN201994651U (en) | 2011-03-15 | 2011-03-15 | Lightning protection control panel and lightning protection camera device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201994651U true CN201994651U (en) | 2011-09-28 |
Family
ID=44671126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200675070U Expired - Fee Related CN201994651U (en) | 2011-03-15 | 2011-03-15 | Lightning protection control panel and lightning protection camera device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201994651U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102904207A (en) * | 2012-09-28 | 2013-01-30 | 西安开元电子实业有限公司 | Overvoltage protector |
-
2011
- 2011-03-15 CN CN2011200675070U patent/CN201994651U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102904207A (en) * | 2012-09-28 | 2013-01-30 | 西安开元电子实业有限公司 | Overvoltage protector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20140315 |