CN204732866U - There is fault automatically detect and the vision signal lightning protection device of auto restore facility - Google Patents
There is fault automatically detect and the vision signal lightning protection device of auto restore facility Download PDFInfo
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- CN204732866U CN204732866U CN201520386303.1U CN201520386303U CN204732866U CN 204732866 U CN204732866 U CN 204732866U CN 201520386303 U CN201520386303 U CN 201520386303U CN 204732866 U CN204732866 U CN 204732866U
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Abstract
The utility model provides a kind ofly to be had fault and automatically detects and the vision signal lightning protection device of auto restore facility, comprise shell, be provided with lightning protection module of power source and the vision signal lightning-protection module being provided with active and standby dual signal circuit in shell, RS485 combined network communication module is all connected vision signal lightning-protection module and lightning protection module of power source with long-range remote signalling dry contact; Input on shell and output are provided with the binding post joint of lightning protection module of power source, vision signal lightning-protection module respectively, shell are also provided with the binding post joint of RS485 combined network communication module and the binding post joint of long-range remote signalling dry contact.The device that the utility model provides overcomes the deficiencies in the prior art, no matter whether possesses the application scenario of RS485 combined network communication, can pass fault message back Surveillance center in time, and can safeguard as early as possible, automatically recover, and ensures the continuity of monitoring.
Description
Technical field
The utility model relates to and a kind ofly has fault and automatically detect and the vision signal lightning protection device of auto restore facility, belongs to lightning protection device technical field.
Background technology
In recent years, along with the security protection project such as " safe city ", " Safe Campus ", " peaceful community ", " harmonious China " is in nationwide Efforts To Develop and deep popularization, various place is extensively set up and is installed and used security protection video supervisory control system, rapid development the sector being obtained advance by leaps and bounds, and scale is constantly being doubled and redoubled.Video monitoring system is that security protection work serves definitely important effect, and the clear magnificence of mission, future is infinitely bright.
But video monitoring system equipment is all the sensitive electronic equipment of collection precise electronic components and parts, and anti-lightning ability is very low, so video monitoring system equipment must install lightning protection device protection.Because each video monitoring system equipment disperses very much, the particularly video camera and trunking etc. of far-end, be distributed in each corner that need monitor especially, such as outdoor each street, outdoor, resident residential quarter, highway, harbour, even away from the mining area, remote mountains etc. of residential area, if broken down, safeguard ageing very low.
And the current vision signal lightning protection device for video monitoring system is the all-in-one lightning arrester that collection power circuit and the lightning protection of vision signal circuit are combined into one.To be struck by lightning or after surge impact failure at lightning protection device, video signal interruption will be caused and monitored picture interrupts, have a strong impact on monitoring effect, more do not allow to monitor the important events interrupted, can guarantee that the continuity monitored is particularly important, this is the serious real defect of current supervisory control system video lightning protection device in practicality.
Utility model content
The technical problems to be solved in the utility model is to provide a kind ofly to be had fault and automatically detects and the vision signal lightning protection device of auto restore facility.
In order to solve the problems of the technologies described above, the technical solution of the utility model is to provide a kind ofly to be had fault and automatically detects and the vision signal lightning protection device of auto restore facility, it is characterized in that: comprise shell, be provided with lightning protection module of power source and the vision signal lightning-protection module being provided with active and standby dual signal circuit in shell, RS485 combined network communication module is all connected vision signal lightning-protection module and lightning protection module of power source with long-range remote signalling dry contact; Input on shell and output are provided with the binding post joint of lightning protection module of power source, vision signal lightning-protection module respectively, shell are also provided with the binding post joint of RS485 combined network communication module and the binding post joint of long-range remote signalling dry contact.
Preferably, the voltage range of described lightning protection module of power source protection is 6 ~ 220V.
Preferably, the signal line of described vision signal lightning-protection module protection comprises digital signal line and analog signal lines, and the signaling interface of described signal line is coaxial bnc interface or network RJ45 interface.
Preferably, described cover top portion is provided with power supply indicator and malfunction indicator light.
During use, when vision signal lightning-protection module main signal line fault, possessing the occasion of RS485 combined network communication, passing fault-signal back Surveillance center by RS485 combined network communication module thus make reserve signalling link work; Do not possessing the occasion of RS485 combined network communication, adopting vision signal on-off cycle coding form to pass fault-signal back Surveillance center by long-range remote signalling dry contact thus make reserve signalling link work.
The device that the utility model provides overcomes the deficiencies in the prior art, no matter whether possesses the application scenario of RS485 combined network communication, can pass fault message back Surveillance center in time, and can safeguard as early as possible, automatically recover, and ensures the continuity of monitoring.
Accompanying drawing explanation
The fault that has that Fig. 1 provides for the utility model detects and the vision signal lightning protection device schematic diagram of auto restore facility automatically.
Embodiment
For making the utility model become apparent, hereby with a preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
The fault that has that Fig. 1 provides for the utility model detects and the vision signal lightning protection device schematic diagram of auto restore facility automatically, described have fault and automatically to detect and the vision signal lightning protection device of auto restore facility comprises shell, lightning protection module of power source is provided with in shell, vision signal lightning-protection module, RS485 combined network communication module and long-range remote signalling dry contact, input on shell and output are provided with lightning protection module of power source respectively, the binding post joint of vision signal lightning-protection module, cover top portion is provided with power supply indicator and malfunction indicator light, shell is also provided with the binding post joint of RS485 combined network communication module and the binding post joint of long-range remote signalling dry contact.
Vision signal lightning-protection module is provided with active and standby double-circuit; when vision signal main line fault; fault-signal passes fault back Surveillance center by RS485 combined network communication module; monitoring can be switched on reserve signalling link; guarantee that monitor video signal does not interrupt or shortens break period as far as possible; and lightning protection device operation conditions can be known in time, can safeguard as early as possible when fault or deterioration, to try one's best, little risk allows watch-dog be in nonprotected state.Do not possessing the application scenario of RS485 combined network communication, encoding to report to the police by the vision signal on-off cycle and pass fault message and video lightning protection deterioration signal back Surveillance center.
A group relay switch is adopted to come switching signal Thunder Protection path and signal direct path in the present embodiment; CPU work is divided into normal operating conditions and alert operation state two kinds of operating states; Under normal operating conditions, CPU is divided into Thunder Protection (long period section is greater than 1 hour) the time of control relay switch and detects lightning protection device state (being less than 1 second), continuous alternate cycle work; Lightning protection device is provided with RS485 combined network communication interface and long-range remote signalling dry contact, when CPU detects that lightning protection device has a fault, CPU transfers alert operation state to operating state, fault-signal by lightning protection RS485 combined network communication module, is passed back Surveillance center and is carried out alarm and reminder announced by lightning protection device on the one hand; On the other hand; vision signal is automatically switched on reserve signalling link; guarantee that monitor video signal recovers do not interrupt or shorten break period as far as possible immediately; and lightning protection device operation conditions can be known in time; can safeguard as early as possible when fault or deterioration, to try one's best, little risk allows watch-dog be in nonprotected state.Do not possessing the application scenario of RS485 combined network communication interface, the control core CPU of lightning protection device can use the regular periodicity of vision signal main line disconnected (very minor time slice) logical (long period section) and pass fault message back Surveillance center by special mode, alert notification is guaranteed to keep in good repair.
The signal of direct path enters through RJ-45, and connect the common port of connection relay K 1, K2, relay K 1, K2 Chang Kaiduan directly join relay K 3, K4 Chang Kaiduan, and the public termination other end RJ-45 of relay K 3, K4 exports.
The signal of Thunder Protection enters through RJ-45, connect the common port of connection relay K 1, K2, by relay K 1, the normally closed output of K2, contact relay K5, K6 normal-closed end, relay K 5, K6 common port are connected with 1,3 pin of discharge tube GAS1, GAS2 respectively, and (namely relay K 5 common port is connected with 1,3 pin of discharge tube GAS1, relay K 6 common port is connected with 1,3 pin of discharge tube GAS2), the common port (B group) of 2 pin contact relay K9 of discharge tube, the normal-closed end (B group) of relay K 9 meets AGND (greatly); Relay K 5, K6 common port simultaneously tie are held around the A of sample resistance R1, R2, R3, R4, B end contact relay K3, K4 normal-closed end respectively of sample resistance R1, R2, R3, R4, and the public termination other end RJ-45 of relay K 3, K4 exports; The B end of sample resistance R1, R2, R3, R4 connects the positive pole of diode D1, D2, D3, D4 and the negative pole of diode D5, D6, D7, D8 respectively; The negative pole of diode D1, D2, D3, D4 connects one end of TVS pipe TVS1 and TVS2, and the positive pole of diode D5, D6, D7, D8 meets the TVS pipe TVS2 other end and TVS3; The other end of TVS1 and TVS3 is linked togather the common port of contact relay K9.
Detect lightning protection device stator channel, the A end of+5V voltage connecting resistance R6, R7, R8, R9, B relay termination K5, K6 Chang Kaiduan of resistance R6, R7, R8, R9, relay K 5, K6 common port are as sampling point A, B, C, D contact relay K7, K8 common port detecting lightning protection device state, and the Chang Kaiduan of relay K 7, K8 connects the AD input channel of CPU; The sampling point of lightning protection device state simultaneously tie is held around the A of sample resistance R1, R2, R3, R4, the positive pole of B terminating diode D1, D2, D3, D4 of sample resistance R1, R2, R3, R4, the common port (A group) of the negative pole contact relay K9 of diode D1, D2, D3, D4, the Chang Kaiduan (A group) of relay K 9 meets GND.
Fault that what the utility model provided have automatically detect and the method for work of vision signal lightning protection device of auto restore facility as follows:
(1) direct path operating state
CPU control relay K1, K2, K3, K4 action, makes relay K 1, K2, K3, K4 switch transition is normally open; Signal enters from the signal of direct path through RJ-45, and through the common port of relay K 1, K2, relay K 1, K2 Chang Kaiduan directly join relay K 3, K4 Chang Kaiduan, and the public termination other end RJ-45 of relay K 3, K4 exports.
(2) Thunder Protection state
CPU control relay K1, K2, K3, K4, K5, K6, K9 are failure to actuate, and make relay K 1, K2, K3, K4, K5, K6, K9 switch transition is normally off; Signal enters through RJ-45, connect the common port of connection relay K 1, K2, by relay K 1, the normally closed output of K2, contact relay K5, K6 normal-closed end, relay K 5, K6 common port are connected with 1,3 pin of discharge tube GAS1, GAS2, the common port (B group) of discharge tube 2 pin contact relay K9, the normal-closed end (B group) of relay K 9 meets AGND (greatly); Relay K 5, K6 common port simultaneously tie are held around the A of sample resistance R1, R2, R3, R4, B end contact relay K3, K4 normal-closed end respectively of sample resistance R1, R2, R3, R4, and the public termination other end RJ-45 of relay K 3, K4 exports; The B end of sample resistance R1, R2, R3, R4 connects the positive pole of diode D1, D2, D3, D4 and the negative pole of diode D5, D6, D7, D8 respectively; The negative pole of diode D1, D2, D3, D4 connects one end of TVS pipe TVS1 and TVS2, and the positive pole of diode D5, D6, D7, D8 meets the TVS pipe TVS2 other end and TVS3; The other end of TVS1 and TVS3 is linked togather the common port of contact relay K9.
(3) lightning protection device state is detected
CPU control relay K1, K2, K3, K4 action, makes relay K 1, K2, K3, K4 switch transition is normally open; External communication signal, without lightning protection, passes through from direct path; CPU control relay K5, K6 action, relay K 5, K6 switch transition are normally open, the A end of+5V voltage connecting resistance R6, R7, R8, R9, B relay termination K5, K6 Chang Kaiduan of resistance R6, R7, R8, R9, contact relay K5, K6 common port is as sampling point A, B, C, D contact relay K7, K8 common port detecting lightning protection device state, and the Chang Kaiduan of relay K 7, K8 connects the AD input channel of CPU; The sampling point of lightning protection device state simultaneously tie is held around the A of sample resistance R1, R2, R3, R4, the positive pole of B terminating diode D1, D2, D3, D4 of sample resistance R1, R2, R3, R4, the common port (A group) of the negative pole contact relay K9 of diode D1, D2, D3, D4, the Chang Kaiduan (A group) of relay K 9 meets GND.
Sampling point A, B, C, D voltage detecting lightning protection device state calculates:
Impose a condition: R1=R2=R3=R4 R6=R7=R8=R9
Normal voltage value is:
V＝(5V-0.7V)*R1/(R1+R6)
Wherein: 0.7V is diode D1, D2, D3, D4 tube voltage drop.
Lightning protection device accident analysis:
Fault 1:V is 0 or close to 0, discharge tube GAS1, GAS2 burn till short circuit;
Fault 2:V is 5V or close to 5V, sample resistance blows;
Fault 3:V is 0.7V, and sample resistance burns till short circuit.
The size of sample resistance magnitude of voltage, can estimate the damaged condition of lightning protection device and the degradation to Surveillance center's forecast lightning protection device.
(4) alert operation state:
CPU sends out alarm signal to long-range remote signalling dry contact, passes fault back Surveillance center and alert notification prompting simultaneously, automatically switch to (direct path operating state) on reserve signalling link by RS485 combined network communication interface; At the control core that the application scenario not possessing RS485 combined network communication interface is this lightning protection device, CPU can use the regular periodicity of vision signal main line disconnected (very minor time slice) logical (long period section) information and carry out coded system and pass fault message back Surveillance center by special mode, alert notification is guaranteed to keep in good repair.
Claims (4)
1. one kind has fault and automatically detects and the vision signal lightning protection device of auto restore facility, it is characterized in that: comprise shell, be provided with lightning protection module of power source and the vision signal lightning-protection module being provided with active and standby dual signal circuit in shell, RS485 combined network communication module is all connected vision signal lightning-protection module and lightning protection module of power source with long-range remote signalling dry contact; Input on shell and output are provided with the binding post joint of lightning protection module of power source, vision signal lightning-protection module respectively, shell are also provided with the binding post joint of RS485 combined network communication module and the binding post joint of long-range remote signalling dry contact.
2. a kind of as claimed in claim 1 have fault and automatically detect and the vision signal lightning protection device of auto restore facility, it is characterized in that: the voltage range of described lightning protection module of power source protection is 6 ~ 220V.
3. a kind of as claimed in claim 1 have fault and automatically detect and the vision signal lightning protection device of auto restore facility; it is characterized in that: the signal line of described vision signal lightning-protection module protection comprises digital signal line and analog signal lines, and the signaling interface of described signal line is coaxial bnc interface or network RJ45 interface.
4. a kind of as claimed in claim 1 have fault and automatically detect and the vision signal lightning protection device of auto restore facility, it is characterized in that: described cover top portion is provided with power supply indicator and malfunction indicator light.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520386303.1U CN204732866U (en) | 2015-06-05 | 2015-06-05 | There is fault automatically detect and the vision signal lightning protection device of auto restore facility |
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| CN201520386303.1U CN204732866U (en) | 2015-06-05 | 2015-06-05 | There is fault automatically detect and the vision signal lightning protection device of auto restore facility |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110726885A (en) * | 2018-07-16 | 2020-01-24 | 湖南中普技术股份有限公司 | Automatic detection device and detection method for signal lightning protector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110726885A (en) * | 2018-07-16 | 2020-01-24 | 湖南中普技术股份有限公司 | Automatic detection device and detection method for signal lightning protector |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151028 Termination date: 20200605 |
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| CF01 | Termination of patent right due to non-payment of annual fee |