CN201408988Y - Remote alarm system of surge protective device - Google Patents
Remote alarm system of surge protective device Download PDFInfo
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- CN201408988Y CN201408988Y CN2009200668205U CN200920066820U CN201408988Y CN 201408988 Y CN201408988 Y CN 201408988Y CN 2009200668205 U CN2009200668205 U CN 2009200668205U CN 200920066820 U CN200920066820 U CN 200920066820U CN 201408988 Y CN201408988 Y CN 201408988Y
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Abstract
A remote alarm system of surge protective device comprises a video transmission circuit, a surge protective device, a failure detection unit, an embedded processing unit/ASIC and a monitoring displayunit; wherein the failure detection unit is respectively connected with the surge protective device and an alarm signal generation transmission unit, for detecting the failure of the surge protectivedevice and transmitting state information to the alarm signal generation transmission unit, the embedded processing unit/ASIC extracts video signals, classifies alarm types, generates and stacks alarminformation, and transmits the video signal added with alarm signals to the monitoring display unit at remote terminal via the video transmission circuit. The remote alarm system realizes remote real-time alarm for surge protective devices via the video transmission circuit, with low cost.
Description
Technical field
The utility model relates to a kind of remote alarming system, relates in particular to a kind of remote alarming system that contains the surge protector in video transmission loop.
Background technology
(Surge Protective Device is in order to restriction transient overvoltage and a kind of equipment that guides surge current SPD) to surge protector.It not only has lightning protection function; and suppress the Switching Overvoltage effect in addition; therefore the application of surge protector is very wide, as highway video monitoring, limited television amplifier, meteorological disaster early warning etc., therefore surge protector is carried out the actual effect detection and is very important.
Existing surge protector is two class alarm methods below adopt when losing efficacy more:
1, onsite alarming method: as on the surge protector body, adopting machinery indication or LED indication;
2, remote signalling terminal remote alarm method: special circuit is connected to loud speaker or LED carries out sound and light alarm etc. as the remote signalling switching signal is laid.
But above-mentioned two kinds of alarm methods all exist very big disadvantage:
For the onsite alarming method; if this surge protector is positioned at unattended operational environment just without any meaning; such as monitoring camera; probably be installed on field or eminence, its machinery indication or LED indication only could be found when the staff carries out manual maintenance.If surge protector is reported to the police and can not in time be found, when running into thunderbolt, because of surge protector has lost protective effect; probably cause protected object to damage; more serious, when surge protector is in the short circuit inefficacy, but fire hazard etc. cause people's property loss.
For remote signalling terminal remote alarm method, in order to realize remote alarms, must rearrange alarm circuit, and also need alarm signal can be reappeared at the treatment facility that terminal increases alarm signal.The cost that will increase construction so greatly and safeguard is lost more than gain.Such as highway video camera along the line, increasing surge protector remote signalling warning as needs then needs to connect up along express highway all-way.
In sum, existing surge protector is reported to the police and is existed as following defective: can not remote alarms, even or can remote alarms, but must the special high alarm circuit of deployment cost.
The utility model content
At above-mentioned defective, the purpose of this utility model is to provide a kind of remote alarming system of surge protector, can't remote alarms when losing efficacy to solve present surge protector or the problem of remote alarms performance difficulty.
The utility model proposes a kind of remote alarming system of surge protector; it realizes remote monitoring and warning to surge protector by the video transmission loop; comprise the video transmission loop; surge protector; in order to detect the failure detection unit whether the surge protector inner member lost efficacy; in order to the monitoring display unit of display alarm information and in order to handle vision signal and to finish embedded processing unit/asic chip that warning message superposes; described surge protector; failure detection unit and embedded processing unit/asic chip link to each other successively; video input signals is connected to the video inputs of described embedded processing unit/asic chip; then tieback is to described video transmission loop for the output of described embedded processing unit/asic chip, and described monitoring display unit is connected to described video transmission loop simultaneously.
According to the described remote alarming system of the utility model preferred embodiment, its embedded processing unit/asic chip comprises with useful signal in the extraction vision signal and judges the vision signal extraction unit whether vision signal exists, reach in order to finish the warning message superpositing unit of warning message and vision signal stack in order to the alarm information processing unit of handling described useful signal and warning message, described vision signal extraction unit input is connected to described video transmission loop, its output is connected to the input of described alarm information processing unit, and the output of described alarm information processing unit then is connected to described video transmission loop by described warning message superpositing unit.
According to the described remote alarming system of the utility model preferred embodiment, its embedded processing unit/asic chip also comprises the decoding unit and the coding unit of a fast acquisition of digital video signals, described decoding unit is arranged between described vision signal input and the described vision signal extraction unit, and described coding unit is provided with between described warning message superpositing unit and the described video transmission loop.
According to the described remote alarming system of the utility model preferred embodiment, its embedded processing unit/asic chip also comprises a D/A converting unit and an A/D converting unit, described A/D converting unit is arranged between described decoding unit and the described vision signal extraction unit, and described D/A converting unit is arranged between described warning message superpositing unit and the described coding unit.
According to the described remote alarming system of the utility model preferred embodiment, its failure detection unit comprises a Thermal Cutoffs and photoelectrical coupler, and described Thermal Cutoffs is connected serially to the light emitting source end of described photoelectrical coupler.
According to the described remote alarming system of the utility model preferred embodiment, its photoelectrical coupler adopts PC817 type photoelectrical coupler.
According to the described remote alarming system of the utility model preferred embodiment, its alarm information processing unit adopts PIC12F629 type programmable single chip computer.
The utility model is superimposed to vision signal with surge protector Failure Alarm signal; and utilize simulation or digital video transmission loop to be sent to the monitoring display unit of far-end, be sent to the monitoring display unit as if the vision signal of the then spontaneous generation band of no video signal warning message and by video transmission loop.Thereby can realize remote alarms when surge protector was lost efficacy, and need not lay alarm circuit with high costs specially, only need utilize existing video to transmit the loop and get final product, thereby in protection equipment, greatly reduce
Description of drawings
The principle assumption diagram of the remote alarming system of the surge protector that Fig. 1 utilizes the video transmission loop for the utility model is a kind of;
Fig. 2 is a kind of principle assumption diagram that utilizes the remote alarming system in analog video transmission loop of the utility model embodiment;
Fig. 3 is a kind of principle assumption diagram that utilizes the remote alarming system in digital video transmission loop of the utility model embodiment;
Fig. 4 utilizes the principle assumption diagram of the remote alarming system in digital video transmission loop for the another kind of the utility model embodiment;
Fig. 5 is the circuit diagram of the failure detection unit of the utility model embodiment;
Fig. 6 is the circuit diagram of the vision signal extraction unit of the utility model embodiment;
Fig. 7 is the structure chart of the alarm information processing unit of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, specify the utility model.
Core of the present utility model is: the warning message by the video transmission loop during with the surge protector fault is sent to the supervising device of far-end, thereby realizes the remote alarms to surge protector.
See also Fig. 1, the principle assumption diagram of the remote alarming system of the surge protector that it utilizes the video transmission loop for the utility model is a kind of, below theory structure of the present utility model is sketched:
This surge protector remote alarming system comprises video transmission loop 101, surge protector 102, failure detection unit 103, embedded processing unit/asic chip 110 and monitoring display unit 104.Failure detection unit 103 links to each other with surge protector 102 and embedded processing unit/asic chip 110 respectively, and it is used to detect surge protection 102, and whether it lost efficacy, and this information is inputed to embedded processing unit/asic chip 110.Vision signal input in 110 receiver, video transmission of embedded processing unit/asic chip loop 101, and judge whether to exist vision signal, make following processing according to its judgement then:, on the vision signal that then warning message is added to, and send in the video transmission loop 101 if exist; If do not exist, then generation has the vision signal of warning message, and sends in the video transmission loop 101.The vision signal of above-mentioned band warning message is sent to the monitoring display unit 104 of far-end by transmission network 105 after inserting the video loop, thereby realizes the remote alarms to surge protector.
The involved video transmission loop of the utility model both can be analog video transmission loop, also can be the digital video transmission loop simultaneously, came it is set forth respectively below by specific embodiment:
See also Fig. 2, it is a kind of principle assumption diagram that utilizes the remote alarming system in analog video transmission loop of the utility model embodiment.This system comprises analog video transmission loop 201, surge protector 102, failure detection unit 103, embedded processing unit/asic chip 110 and monitoring display unit 104.Failure detection unit 103 links to each other with surge protector 102 and embedded processing unit/asic chip 110 respectively, and it is used to detect surge protection 102, and whether it lost efficacy, and this information is inputed to embedded processing unit/asic chip 110.And embedded processing unit/asic chip 110 comprises warning message superpositing unit 111, vision signal extraction unit 112 and alarm information processing unit 113, comprises warning message superpositing unit 111, vision signal extraction unit 112 and alarm information processing unit 113.The video incoming end of vision signal extraction unit 112 inserts analog video transmission loop 201, and useful signal judges simultaneously as the benchmark of warning message stack whether vision signal loses in the extraction vision signal.The output of vision signal extraction unit 112 then is connected to the input of alarm information processing unit 113, and the output of information process unit 113 is connected to analog video transmission loop 201 by warning message superpositing unit 111 simultaneously.
If alarm signal generation transmission unit 110 is received information and vision signal extraction unit 112 that surge protector 102 lost efficacy and is judged when in the analog video transmission loop 201 analog video signal being arranged, then the warning Word message that the useful signal that is extracted with the vision signal extraction unit is the benchmark generation is exported to warning message superpositing unit 111 in alarm information processing unit 113, inserts analog videos by warning message superpositing unit 111 stack backs and transmits loops 201; When vision signal extraction unit 112 is judged in the analog videos transmission loops 201 no video signal if alarm signal generation transmission unit 110 is received information that surge protector 102 lost efficacy; then alarm information processing unit 113 is to warning message superpositing unit 111 output alarm Word message and timing signals, and the vision signal that is superimposed as the band warning message by warning message superpositing unit 111 inserts analog video transmission loop 201.
The vision signal of above-mentioned band warning message inserts 201 backs, analog video loop and is sent to the monitoring display unit 104 of far-end by transmission network 105, thereby realizes the remote alarms to surge protector.
See also Fig. 5, it is the circuit diagram of the failure detection unit of the utility model embodiment.This failure detection unit 103 has comprised current-limiting resistance R9, LED 1, photoelectrical coupler U2, diode D1 and Thermal Cutoffs F1, wherein photoelectrical coupler U2 can adopt the precision photoelectric coupler of PC817, its light emitting source is a LED 2, and light-receiving device is phototriode Q3.Current-limiting resistance R8 one end is connected to surge protector 102; the other end is connected to the anode of LED 1; the negative electrode of LED 1 then is connected to the anode of LED 2 among the photoelectrical coupler U2; the negative electrode of LED 2 and the anode of diode D1 link to each other simultaneously, and Thermal Cutoffs F1 is connected between the negative electrode of surge protector 102 and diode D1.The collector electrode of photosensitive triode is connected to power supply VCC, and emitter T_IN then is connected to alarm signal generation transmission unit 110.Connect by foregoing circuit; constituted an alarm circuit; during surge protector 102 operate as normal; LED 2 is normally luminous; when in the surge protector during component failure; Thermal Cutoffs F1 can fuse owing to working temperature is too high, thereby it is luminous to cause LED 2 to stop, and phototriode Q3 reads this information and it is sent to alarm signal generation transmission unit 110 by emitter.Certainly the execution mode of failure detection unit is not limited to aforesaid way, and any failure detection unit with said function all should drop within the utility model protection range.
See also Fig. 6, it is the circuit diagram of the vision signal extraction unit of the utility model embodiment.This vision signal extraction unit 112 comprises PNP triode Q1, NPN triode Q2, polar capacitor C1 is arranged, the first polarity free capacitor C2, the second polarity free capacitor C3 and resistance R 1～R8.The emitter of PNP triode Q1 is connected to power supply VCC, and its collector electrode is connected to video input node N6, and base stage is connected to node N5.Be connected between node N5 and the node N4 after current-limiting resistance R5 and the first polarity free capacitor C2 series connection, and be connected between power supply node N1 and the node N4 after current-limiting resistance R4 and the second polarity free capacitor C3 series connection.The base stage of NPN triode Q2 is connected to power supply node N1, and emitter is connected to node N4, and base stage then is connected to node N2.Resistance R 1 is connected between power supply node N1 and the node N2, and the end of resistance R 2, R3, R6, R7 is connected to ground connection node N3, and the other end then is connected to node N2, N4, N5 and N6 respectively.Have the positive pole of polar capacitor C1 to be connected to node N2, its negative pole then is connected to node N7.Wherein NPN triode Q2, resistance R 1, R2, R3 and by polar capacitor C1 form penetrate with, in order to isolate the input video changes in amplitude to extracting the influence of circuit.PNP triode Q1, resistance R 4, R5, R6, R7, the first polarity free capacitor C2 and the second polarity free capacitor C3 form the signal extracting circuit circuit, mainly are to isolate useful signal in the vision signal by the direct voltage of the first polarity free capacitor C2 and the accumulation of the second polarity free capacitor C3 two ends.
See also Fig. 7 again, it is the structure chart of the alarm information processing unit of the utility model embodiment.It can adopt the PIC12F629 programmable single chip computer as main control chip.See also Fig. 5, the T_IN end of above-mentioned failure detection unit 103 is connected to the 4PIN of main control chip, see also Fig. 6 again, input video Video_IN (also be output video place simultaneously) thus be connected to node N7 incoming video signal extraction unit 112, the output HV_IN of vision signal extraction unit 112 is connected to the 5PIN of main control chip, and the 7PIN of main control chip is the useful signal that is extracted in order to the warning Word message that edits in advance of output and vision signal extraction unit 112, it is connected to node N7, also is the output video place; The 6PIN of main control chip is in order to the output timing signal, and it is connected to node N7 by resistance R 8.Main control chip then carries out following two kinds of actions according to the judgement of vision signal extraction unit 112 if receive the information that surge protector 102 lost efficacy at this moment:
1, if in the analog video transmission loop 201 vision signal is arranged, then the useful signal that extracted of the warning Word message that edits in advance of 7PIN output and vision signal extraction unit 112 is realized the stack of warning message to the input video place;
2, if analog video transmits no video signal in the loop 201, then 7PIN exports the warning Word message that edits in advance, and 6PIN output timing signal, both realize at the input video place entering stack in the video transmission loop thereby become vision signal.
The stacking method of above-mentioned warning message can adopt existing OSD technology, can certainly be other superimposing techniques, and it is selected not in order to limit the utility model.
The vision signal of band warning message enters behind the analog video transmission loop 201 and can be shown by the monitoring display unit that transmission network is sent to far-end, thereby finishes the remote alarms to surge protector.
See also Fig. 3, it is for being a kind of principle assumption diagram that utilizes the remote alarming system in digital video transmission loop of the utility model embodiment.This system comprises digital video transmission loop 301, surge protector 102, failure detection unit 103, embedded processing unit/asic chip 110 and monitoring display unit 104.Utilize the system in analog video transmission loop to compare with above-mentioned, embedded processing unit/the asic chip 110 of present embodiment has also comprised decoding unit 114 and coding unit 115, wherein decoding unit 114 is arranged between digital video input and the vision signal extraction unit 112, and coding unit 115 then is arranged between warning message superpositing unit 111 and the digital video output.Present embodiment realizes utilizing the digital video transmission loop to transmit the purpose of warning message to its stack warning message by digital decoding video signal is handled then.
See also Fig. 4, it utilizes the principle assumption diagram of the remote alarming system in digital video transmission loop for the another kind of the utility model embodiment.The difference of present embodiment and embodiment 2 is, its embedded processing unit/asic chip 110 has also comprised A/D converting unit 116 and D/A converting unit 117, wherein A/D converting unit 116 is arranged between decoding unit 114 and the vision signal extraction unit 112, and the D/A converting unit then is arranged between warning message superpositing unit 111 and the coding unit 115.So just decoded digital video signal is converted to analog video signal, and to its warning message that superposes, and then inputed to the video transmission loop after being converted to digital video signal and coding.
More than disclosed only be several specific embodiment of the present utility model, but the utility model is not limited thereto, any those skilled in the art can think variation, all should drop in the protection range of the present utility model.
Claims (7)
1; a kind of remote alarming system of surge protector; it realizes remote monitoring and warning to surge protector by the video transmission loop; it is characterized in that; comprise the video transmission loop; surge protector; in order to detect the failure detection unit whether the surge protector inner member lost efficacy; in order to the monitoring display unit of display alarm information and in order to handle vision signal and to finish embedded processing unit/asic chip that warning message superposes; described surge protector; failure detection unit and embedded processing unit/asic chip link to each other successively; video input signals is connected to the video inputs of described embedded processing unit/asic chip; then tieback is to described video transmission loop for the output of described embedded processing unit/asic chip, and described monitoring display unit is connected to described video transmission loop simultaneously.
2, remote alarming system as claimed in claim 1, it is characterized in that, described embedded processing unit/asic chip comprises with useful signal in the extraction vision signal and judges the vision signal extraction unit whether vision signal exists, reach in order to finish the warning message superpositing unit of warning message and vision signal stack in order to the alarm information processing unit of handling described useful signal and warning message, described vision signal extraction unit input is connected to described video transmission loop, its output is connected to the input of described alarm information processing unit, and the output of described alarm information processing unit then is connected to described video transmission loop by described warning message superpositing unit.
3, remote alarming system as claimed in claim 2, it is characterized in that, described embedded processing unit/asic chip also comprises the decoding unit and the coding unit of a fast acquisition of digital video signals, described decoding unit is arranged between described vision signal input and the described vision signal extraction unit, and described coding unit is provided with between described warning message superpositing unit and the described video transmission loop.
4, remote alarming system as claimed in claim 3, it is characterized in that, described embedded processing unit/asic chip also comprises a D/A converting unit and an A/D converting unit, described A/D converting unit is arranged between described decoding unit and the described vision signal extraction unit, and described D/A converting unit is arranged between described warning message superpositing unit and the described coding unit.
5, remote alarming system as claimed in claim 1 is characterized in that, described failure detection unit comprises a Thermal Cutoffs and photoelectrical coupler, and described Thermal Cutoffs is connected serially to the light emitting source end of described photoelectrical coupler.
6, remote alarming system as claimed in claim 5 is characterized in that, described photoelectrical coupler adopts PC817 type photoelectrical coupler.
7, remote alarming system as claimed in claim 2 is characterized in that, described alarm information processing unit adopts PIC12F629 type programmable single chip computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200668205U CN201408988Y (en) | 2009-01-13 | 2009-01-13 | Remote alarm system of surge protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200668205U CN201408988Y (en) | 2009-01-13 | 2009-01-13 | Remote alarm system of surge protective device |
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| Publication Number | Publication Date |
|---|---|
| CN201408988Y true CN201408988Y (en) | 2010-02-17 |
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| CN2009200668205U Expired - Lifetime CN201408988Y (en) | 2009-01-13 | 2009-01-13 | Remote alarm system of surge protective device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101515718B (en) * | 2009-01-13 | 2011-04-27 | 上海雷迅防雷技术有限公司 | Remote alarm method and a system of a surge protector |
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2009
- 2009-01-13 CN CN2009200668205U patent/CN201408988Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101515718B (en) * | 2009-01-13 | 2011-04-27 | 上海雷迅防雷技术有限公司 | Remote alarm method and a system of a surge protector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100217 Effective date of abandoning: 20090113 |