CN202855001U - Nuclear power plant sensing fiber detection system capable of realizing multi-channel signal transmission - Google Patents
Nuclear power plant sensing fiber detection system capable of realizing multi-channel signal transmission Download PDFInfo
- Publication number
- CN202855001U CN202855001U CN2012205174330U CN201220517433U CN202855001U CN 202855001 U CN202855001 U CN 202855001U CN 2012205174330 U CN2012205174330 U CN 2012205174330U CN 201220517433 U CN201220517433 U CN 201220517433U CN 202855001 U CN202855001 U CN 202855001U
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- Prior art keywords
- fiber optic
- sensor fibre
- nuclear power
- equipment
- terminal device
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/02—Mechanical actuation
- G08B13/12—Mechanical actuation by the breaking or disturbance of stretched cords or wires
- G08B13/122—Mechanical actuation by the breaking or disturbance of stretched cords or wires for a perimeter fence
- G08B13/124—Mechanical actuation by the breaking or disturbance of stretched cords or wires for a perimeter fence with the breaking or disturbance being optically detected, e.g. optical fibers in the perimeter fence
Abstract
The utility model relates to a nuclear power plant sensing fiber detection system capable of realizing multi-channel signal transmission. The system comprises a laser, an alarm processing unit, a sensing fiber arranged on a perimeter fence of a nuclear power plant, a terminal device, a first optical transceiver, a wavelength division multiplexer, a wavelength division de-multiplexer, a second optical transceiver, and control center equipment connected with the second optical transceiver. The wavelength division multiplexer multiplexes detection optical signals of the laser and equipment optical signals of the first optical transceiver and transmits the signals to the wavelength division de-multiplexer through the sensing fiber, the wavelength division de-multiplexer transmits the equipment optical signals obtained from multiplexing to the second optical transceiver, the second optical transceiver converts the equipment optical signals into electric signals and transmits the electric signals to the control center equipment, and the detection optical signals obtained from de-multiplexing is transmitted to the alarm processing unit. No additional communication cable needs to be laid, an area complex in construction is bypassed, and the construction difficulty is greatly reduced.
Description
Technical field
The utility model relates to safety-security area, more particularly, relates to a kind of nuclear power station sensor fibre detection system that realizes the multiple signals transmission.
Background technology
The security protection of nuclear power station requires relatively high, need to carry out safety monitoring to nuclear power station circumference fence.Traditional safety monitoring is to use the technology such as microwave sounding, infrared acquisition to carry out, yet, since sensor fibre have simple in structure, cost is lower, easy to maintenance, and the advantage that not affected by electromagnetism, lightning, radio signal, nuclear power station have begun to use gradually the sensor fibre technology to substitute original microwave sounding, infrared detection technique as the Scheme Choice of periphery intrusion preventing system.
The principle of present sensor fibre 2 detection systems comprises the sensor fibre 2 of laser instrument 1, warning processing unit 3 and connecting laser 1 and warning processing unit 3 as shown in Figure 2.This sensor fibre is arranged on the circumference fence 4 in nuclear power station zone.Laser instrument 1 produces light detecting signal, and utilize sensor fibre 2 to be sent to the warning processing unit 3 of opposite end, the control processor of warning processing unit 3 carries out technical finesse to the detectable signal that receives, judge whether it meets setting parameter requirement (parameters such as phase deviation, frequency difference), judge whether the purpose that belongs to intrusion event and send alarm to reach.
When light signal was delivered into optical fiber from laser instrument 1, the detector of warning processing unit 3 can be processed the phase place of the light signal that receives.Suppose that sensing optic cable is not subject to the not variation of transmission of any interference or light, the phase place of light signal will not change yet so; When sensor fibre 2 is moved or during the interference vibrated, the transmission mode of light signal will change.
Motion, vibration or pressure can cause form to be disturbed and the change of generation light signal phase place.Warning processing unit 3 receivers are surveyed phase change, survey intensity and the type disturbed, then the signal that detects are processed, and differentiate the condition whether it meets triggering " event ".If eligible, trigger one " event ", otherwise, ignore this signal.The standard whether signal that judgement detects meets triggering " event " is the calibration parameter that the user arranges warning processing unit 3.
In addition, relatively large because of the nuclear power station zone, various weak electricity system terminal devices are distributed more widely in the district, and terminal device (such as Video Monitoring Terminal, picture pick-up device, light fixture, audio frequency apparatus etc.) need lay the communications cable to control center's equipment.
Because the nuclear power station zone is wider, the weak electricity system terminal device spreads all over each corner of full plant area, and nuclear power station lays standard to cable strict requirement is arranged, in cable cable laying operation at ordinary times, often meet some difficulties normal construction is caused very large impact, for example: do not have pipe trench to control center's equipment around the terminal device; The pipe trench inner cable is comparatively crowded on every side, sensitive for damages when signal cable lays; Pipe trench is the forceful electric power pipe trench on every side, signal cable is subject to electromagnetic interference (EMI), if can cause construction cost to rise because pipe trench is newly dug in the access of minority terminal device this moment, also can postpone on the construction speed, if cable is laid to the pipe trench that does not meet the nuclear plant safety condition by force, can cause the lower degradation of system signal quality, cause the difficulty that arranges of weak electricity system.
The utility model content
The technical problems to be solved in the utility model is, a kind of nuclear power station sensor fibre detection system that realizes the multiple signals transmission is provided.
The technical scheme that its technical matters that solves the utility model adopts is: construct a kind of nuclear power station sensor fibre detection system that realizes the multiple signals transmission, comprise laser instrument, warning processing unit and connect described laser instrument and the sensor fibre of warning processing unit, described sensor fibre is arranged on the circumference fence of described nuclear power station;
The wavelength division multiplexer that this system also comprises terminal device, the first fiber optic that is connected with described terminal device, be connected with laser instrument with described the first fiber optic, the Wave decomposing multiplexer, the second fiber optic that is connected with described Wave decomposing multiplexer that are connected with described wavelength division multiplexer by described sensor fibre and the control center's equipment that is connected with described the second fiber optic;
Described the first fiber optic will convert from the electric signal of described terminal device the equipment optical signal transmission to described wavelength division multiplexer, described wavelength division multiplexer carries out the detection light signal of described laser instrument and the equipment light signal of the first fiber optic multiplexing, and be sent to described Wave decomposing multiplexer by described sensor fibre, the equipment optical signal transmission that described Wave decomposing multiplexer obtains demultiplexing is to described the second fiber optic, described the second fiber optic converts the equipment light signal to electric signal and is sent to described control center equipment, and the detection optical signal transmission that demultiplexing obtains is to described warning processing unit.
In the nuclear power station sensor fibre detection system that realizes multiple signals transmission of the present utility model, described terminal device is the weak electricity system terminal device, and described control center equipment is weak electricity system control center equipment.
In the nuclear power station sensor fibre detection system that realizes multiple signals transmission of the present utility model, described weak electricity system terminal device comprises picture pick-up device, light fixture or audio frequency apparatus.
In the nuclear power station sensor fibre detection system that realizes multiple signals transmission of the present utility model, also be provided with analog to digital converter between described terminal device and described the first fiber optic;
Also be provided with digital to analog converter between described the second fiber optic and the described control center equipment.
In the nuclear power station sensor fibre detection system that realizes multiple signals transmission of the present utility model, be connected by signal line communications between described terminal device and described the first fiber optic;
Be connected by signal line communications between described the second fiber optic and the described control center equipment.
In the nuclear power station sensor fibre detection system that realizes multiple signals transmission of the present utility model, between described laser instrument and the first fiber optic and the described wavelength division multiplexer, be connected by optical fiber communication between described warning processing unit and the second fiber optic and the described Wave decomposing multiplexer.
In the nuclear power station sensor fibre detection system that realizes multiple signals transmission of the present utility model, described the first fiber optic be connected that fiber optic includes the optical module that carries out opto-electronic conversion and be connected the serial deserializer that carries out the high-speed serial signals transmission with described optical module.
Enforcement the utlity model has following beneficial effect: utilize the wavelength-division multiplex technique of sensor fibre to increase signal transmission passage, the signal of the terminal device sensor fibre by the circumference fence is sent to control center's equipment, need not to lay in addition the communications cable, walk around the complicated location of construction, greatly reduced the difficulty of the construction of knowing clearly; Because reduced the quantities of newly digging pipe trench and fiber cable laying, and the buying expenses of optical fiber and transmission equipment, saved engineering cost, compressed the cycle of construction.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the synoptic diagram of an embodiment of the utility model nuclear power station sensor fibre detection system;
Fig. 2 is the synoptic diagram of the sensor fibre detection system of prior art.
Embodiment
As shown in Figure 1, be an embodiment of nuclear power station sensor fibre 12 detection systems of the present utility model, can realize multiple signals transmission, be convenient to the communication that is connected of terminal device 14 and control center equipment 19.
These nuclear power station sensor fibre 12 detection systems comprise traditional laser instrument 11, warning processing unit 13, sensor fibre 12 etc., can realize that existing sensor fibre 12 detection systems are to the function of nuclear power station periphery intrusion preventing.
Further, these nuclear power station sensor fibre 12 detection systems also comprise terminal device 14, the first fiber optic 15, wavelength division multiplexer 16, Wave decomposing multiplexer 17, the second fiber optic 18, control center's equipment 19 etc., utilize sensor fibre 12 to carry out the transmission of signal, to realize that the signal of terminal device 14 is sent to control center's equipment 19, simultaneously, distortion or the Loss of signal can not occur in the signal that determines weak electricity system owing to the characteristic of optical signal transmission fiber because of motion, vibration or the pressure of sensor fibre, so can realize the transmission of multiple signals.
This terminal device 14 can be the various weak electricity system terminal devices 14 in the nuclear power station district, such as Video Monitoring Terminal, picture pick-up device, light fixture, audio frequency apparatus etc.This control center's equipment 19 is weak electricity system control center equipment 19, is used for receiving weak electricity system terminal device signal.
This first fiber optic 15 is connected communication by signal wire with terminal device 14, the electric signal of receiving terminal apparatus 14, and convert light signal output to.Understandable, when terminal device 14 output be simulating signal, at this moment, between terminal device 14 and the first fiber optic 15, also be provided with analog to digital converter, analog signal conversion is become digital signal after, be resent to the first fiber optic 15.
This second fiber optic 18 is connected communication by signal wire with control center equipment 19, the light signal that receives is converted to electric signal exports control center's equipment 19 to.Understandable, can also be provided with digital to analog converter between the second fiber optic 18 and the control center's equipment 19, digital signal is converted to simulating signal exports again control center's equipment 19 to.
This first fiber optic 15, the second fiber optic 18 include optical module and serial deserializer (SERDES chip).Optical module is that the electric signal to terminal device 14 carries out opto-electronic conversion, converts the electrical signal to light signal at the light transmitting terminal of sensor fibre 12, by sensor fibre 12 transmission.Because sensor fibre 12 may be operated in one in 1310nm and two wavelength period of 1550nm, so need to decide according to the operation wavelength of sensor fibre 12 selection of optical module.
This optical module can comprise optoelectronic device, functional circuit and optical interface etc., and optoelectronic device comprises and transmits and receives two parts.Radiating portion is: the electric signal of inputting a constant bit rate is processed rear drive semiconductor laser 11(LD through the driving chip of inside) or light emitting diode (LED) launch the modulated light signal of respective rate, its inside makes the optical signal power of output keep stable with the luminous power automatic control circuit.Receiving unit is: be converted to electric signal by the photodetection diode behind the light signal load module of a constant bit rate, the electric signal of output phase code rate behind prime amplifier.And the SERDES chip mainly has two functions, and function is for advancing high-speed serial signals with the device signal of low speed is multiplexing, and a function is for to carry out the DC balance to signal, to satisfy the level range of wavelength division multiplexer 16.
The output of the first fiber optic 15 and laser instrument 11 all is connected to wavelength division multiplexer 16 by optical fiber, and is by wavelength division multiplexer 16 that multi-wavelength's light signal is synthetic a branch of, transmits along simple optical fiber.The output terminal of wavelength division multiplexer 16 is connected to sensor fibre 12, realizes the wavelength-division multiplex function to terminal device 14 signals of the light detecting signal of sensor fibre 12 and weak electricity system, and transfers to the opposite end by sensor fibre 12.
And warning processing unit 13 be connected fiber optic 18 and be connected communication with Wave decomposing multiplexer 17 by optical fiber, with multi-wavelength's light signal separately, be light detecting signal and terminal device 14 light signals with the light signal demultiplexing.Light detecting signal transfers to warning processing unit 13 and processes, the electric signal of weak electricity system terminal device 14 then is converted into digital electric signal by the second fiber optic 18, directly transmission or transmit or process by transferring to control center's equipment 19 after the digital-to-analog conversion.
Be (being that laser instrument 11 and warning processing unit 13 be not or not a place) in the situation of non-closure at circumference fence 20, at this moment, sensor fibre 12 is arranged on the circumference fence 20.In when work, after the electric signal of terminal device 14 accesses the first fiber optic 15, the first fiber optics 15 electric signal is converted to the equipment light signal, export wavelength division multiplexer 16 to; Simultaneously, the detection light signal of laser instrument 11 also exports wavelength division multiplexer 16 to.
After the Wave decomposing multiplexer 17 of opposite end receives light signal, be light detecting signal and terminal device 14 light signals with the light signal demultiplexing, light detecting signal transfers to warning processing unit 13 and processes; Terminal device 14 signals then are converted into electric signal by the second fiber optic 18, directly transmission or transmit or process by transferring to control center's equipment 19 after the digital-to-analog conversion.
The utility model utilizes light WDM technology, realizes by sensor fibre 12 function that terminal device 14 signals of minority weak electricity system transfer to the opposite end being had some advantage at least:
1, owing to avoided again laying the communications cable so that the stretch that the condition difficulty is walked around in construction by, greatly reduce the difficulty of the construction of knowing clearly;
2, owing to reduced the quantities of newly digging pipe trench and fiber cable laying, reach the buying expenses of optical fiber and transmission equipment, saved engineering cost;
3, the nuclear power station construction often can be absorbed in cable and lay the predicament of seeking route; not only need to finish power plant's auditing flow and can construct and newly dig pipe, the engineering time also can prolong, and will inevitably cause construction speed to be delayed; adopt the technical scheme of this patent, compressed the cycle of construction.
Understandable, above-mentioned each technical characterictic can combination in any uses and unrestricted.
The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model instructions and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (7)
1. nuclear power station sensor fibre detection system that can realize multiple signals transmission, comprise laser instrument, warning processing unit and connect described laser instrument and the sensor fibre of warning processing unit, described sensor fibre is arranged on the circumference fence of described nuclear power station; It is characterized in that,
The wavelength division multiplexer that this system also comprises terminal device, the first fiber optic that is connected with described terminal device, be connected with laser instrument with described the first fiber optic, the Wave decomposing multiplexer, the second fiber optic that is connected with described Wave decomposing multiplexer that are connected with described wavelength division multiplexer by described sensor fibre and the control center's equipment that is connected with described the second fiber optic;
Described the first fiber optic will convert from the electric signal of described terminal device the equipment optical signal transmission to described wavelength division multiplexer, described wavelength division multiplexer carries out the detection light signal of described laser instrument and the equipment light signal of the first fiber optic multiplexing, and be sent to described Wave decomposing multiplexer by described sensor fibre, the equipment optical signal transmission that described Wave decomposing multiplexer obtains demultiplexing is to described the second fiber optic, described the second fiber optic converts the equipment light signal to electric signal and is sent to described control center equipment, and the detection optical signal transmission that demultiplexing obtains is to described warning processing unit.
2. the nuclear power station sensor fibre detection system that realizes the multiple signals transmission according to claim 1 is characterized in that described terminal device is the weak electricity system terminal device, and described control center equipment is weak electricity system control center equipment.
3. the nuclear power station sensor fibre detection system that realizes the multiple signals transmission according to claim 2 is characterized in that described weak electricity system terminal device comprises picture pick-up device, light fixture or audio frequency apparatus.
4. the nuclear power station sensor fibre detection system that realizes the multiple signals transmission according to claim 1 is characterized in that, also is provided with analog to digital converter between described terminal device and described the first fiber optic;
Also be provided with digital to analog converter between described the second fiber optic and the described control center equipment.
5. the nuclear power station sensor fibre detection system that realizes multiple signals transmission according to claim 1 is characterized in that, is connected by signal line communications between described terminal device and described the first fiber optic;
Be connected by signal line communications between described the second fiber optic and the described control center equipment.
6. the nuclear power station sensor fibre detection system that realizes multiple signals transmission according to claim 1, it is characterized in that, between described laser instrument and the first fiber optic and the described wavelength division multiplexer, be connected by optical fiber communication between described warning processing unit and the second fiber optic and the described Wave decomposing multiplexer.
7. each described nuclear power station sensor fibre detection system that realizes multiple signals transmission according to claim 1-6, it is characterized in that described the first fiber optic carries out the serial deserializer that high-speed serial signals transmits with being connected that fiber optic includes the optical module that carries out opto-electronic conversion and being connected with described optical module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205174330U CN202855001U (en) | 2012-10-10 | 2012-10-10 | Nuclear power plant sensing fiber detection system capable of realizing multi-channel signal transmission |
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| CN2012205174330U CN202855001U (en) | 2012-10-10 | 2012-10-10 | Nuclear power plant sensing fiber detection system capable of realizing multi-channel signal transmission |
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| CN202855001U true CN202855001U (en) | 2013-04-03 |
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| CN2012205174330U Expired - Lifetime CN202855001U (en) | 2012-10-10 | 2012-10-10 | Nuclear power plant sensing fiber detection system capable of realizing multi-channel signal transmission |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014169820A1 (en) * | 2013-04-18 | 2014-10-23 | 国家电网公司 | Point-type high-voltage power transmission line optical fiber detection network |
| CN108259864A (en) * | 2018-03-28 | 2018-07-06 | 周毅 | A kind of vision signal optical cable transmission system and the video camera with the Transmission system |
| CN108549331A (en) * | 2017-12-08 | 2018-09-18 | 上海交通大学 | A kind of control centre-machine terminal communication system and method |
| CN109671233A (en) * | 2018-10-12 | 2019-04-23 | 南京派光信息技术有限公司 | A kind of circumference fence based on fiber-optic probe |
-
2012
- 2012-10-10 CN CN2012205174330U patent/CN202855001U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014169820A1 (en) * | 2013-04-18 | 2014-10-23 | 国家电网公司 | Point-type high-voltage power transmission line optical fiber detection network |
| CN108549331A (en) * | 2017-12-08 | 2018-09-18 | 上海交通大学 | A kind of control centre-machine terminal communication system and method |
| CN108259864A (en) * | 2018-03-28 | 2018-07-06 | 周毅 | A kind of vision signal optical cable transmission system and the video camera with the Transmission system |
| CN109671233A (en) * | 2018-10-12 | 2019-04-23 | 南京派光信息技术有限公司 | A kind of circumference fence based on fiber-optic probe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518000 Guangdong, Futian District, Yitian Road, building A, block, building on the whole floor of A1301-1320 13 Patentee after: CHINA NUCLEAR POWER TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. Patentee after: CHINA GENERAL NUCLEAR POWER Corp. Address before: 518000 Guangdong, Futian District, Yitian Road, building A, block, building on the whole floor of A1301-1320 13 Patentee before: CHINA NUCLEAR POWER TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. Patentee before: CHINA GUANGDONG NUCLEAR POWER GROUP Co.,Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20151215 Address after: 518031 Guangdong province Futian District Shangbu Road West of the city of Shenzhen Shenzhen science and technology building, 15 Floor Patentee after: LING'AO NUCLEAR POWER Co.,Ltd. Patentee after: CHINA NUCLEAR POWER TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. Patentee after: CHINA GENERAL NUCLEAR POWER Corp. Address before: 518000 Guangdong, Futian District, Yitian Road, building A, block, building on the whole floor of A1301-1320 13 Patentee before: CHINA NUCLEAR POWER TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. Patentee before: CHINA GENERAL NUCLEAR POWER Corp. |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518031 Guangdong province Futian District Shangbu Road West of the city of Shenzhen Shenzhen science and technology building, 15 Floor Patentee after: LING'AO NUCLEAR POWER Co.,Ltd. Patentee after: CHINA NUCLEAR POWER TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. Patentee after: CHINA GENERAL NUCLEAR POWER Corp. Address before: 518031 Guangdong province Futian District Shangbu Road West of the city of Shenzhen Shenzhen science and technology building, 15 Floor Patentee before: LING'AO NUCLEAR POWER Co.,Ltd. Patentee before: CHINA NUCLEAR POWER TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. Patentee before: CHINA GENERAL NUCLEAR POWER Corp. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130403 |