CN100589142C - A kind of distributed optical fiber temperature monitoring system - Google Patents
A kind of distributed optical fiber temperature monitoring system Download PDFInfo
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- CN100589142C CN100589142C CN200710164579A CN200710164579A CN100589142C CN 100589142 C CN100589142 C CN 100589142C CN 200710164579 A CN200710164579 A CN 200710164579A CN 200710164579 A CN200710164579 A CN 200710164579A CN 100589142 C CN100589142 C CN 100589142C
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 16
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- 230000006855 networking Effects 0.000 abstract description 9
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Abstract
The present invention relates to a kind of distributed optical fiber temperature monitoring system, it comprises the main website of Surveillance center, the remote controlled substation that at least one links to each other with the main website of Surveillance center by optical fiber, this remote controlled substation comprises temperature sensor module at least, it is characterized in that the remote controlled substation includes two fiber optical transceivers at least, and the electricity mouth of these two fiber optical transceivers all is connected with described temperature sensor module, the first fiber optical transceiver light mouth links to each other with first optical communications port of main website of Surveillance center in first remote controlled substation, the second fiber optical transceiver light mouth of last remote controlled substation links to each other with second optical communications port of main website of Surveillance center, and two adjacent remote controlled substations also are to link to each other by optical fiber between the remote controlled substation.The present invention does not need to increase extra networking cost; Signal transmits and to pass to the main website of Surveillance center by bi-directional ring, and when the optical fiber of certain remote controlled substation one side occurs when unusual, signal passes to the main website of Surveillance center by the opposite side optical fiber circuit.
Description
Technical field
The present invention relates to a kind of temperature monitoring system, it is bigger particularly to relate to a kind of monitor temperature regional extent that needs, the distributed optical fiber temperature monitoring system that the monitored area disperses.
Background technology
Distributed optical fiber temperature sensing system is a kind of sensor-based system that real-time measurement space temperature field distributes that is used for.This technology was proposed by Britain University of Southampton early than 1981, and at present external (mainly being states such as Britain, Japan) developed product.The domestic research work of also just actively developing this respect, the series of products of distributed optical fiber temperature sensor have been succeeded in developing, and obtained Preliminary Applications at some industrial circles, distributed optical fiber temperature sensor (DTS) system is based on the principle of advanced optical time domain reflection (OTDR) technology and the Raman scattering temperature effect dorsad of optical fiber, with optical fiber is carrier, closed by main frame, sensing optic cable and other enclosure group and to form, the distributing optical fiber sensing technology has that anti-electromagnetic field disturbs, big characteristics such as signal transmission bandwidth.The temperature at its place, place can continuous coverage optical fiber along the line, measuring distance is in several kilometer range, and spatial positioning accuracy reaches the order of magnitude of rice, can carry out uninterrupted automatic measurement, is specially adapted to the application scenario of multimetering on a large scale.In electric system, this optical fiber sensing technology easily produces facilities such as the position, cable interlayer, cable passage, high-rating generator stator, high-power transformer, boiler of heating because of the loose contact reason at high voltage power cable, electrical equipment fixed point of temperature sensing occasion is with a wide range of applications.
But based on the unit version of independent utility, several applications also is by means of extra Ethernet transmission data in network environment substantially in the application of distributed optical fiber temperature sensing system at present.In the practical application of distributed optical fiber temperature sensing system, the temperature of some sensitizing range in detecting in a big way if desired, and, need be aggregated into Central Control Room to these testing results, need control (such as acquisition time, acquisition parameter etc. are set) to each the monitored area node that is distributed in surveyed area, because general whole surveyed area is big (generally in 30km～100km scope), the separate unit distributed optical fiber temperature sensing system can not meet the demands, and this just inevitably relates to the networking problem between monitored area and the main website of Surveillance center.
General way is, use extra ethernet network to finish networking function, adopt star structure or ad hoc mode to finish the signal transmission, as shown in Figure 1, its implementation is that the temperature signal of need monitored area or other pilot signals are sent to the main website of Surveillance center by extra Ethernet, such networking mode not only needs additionally to lay with outer net, increase and lay cost, and be not suitable at high pressure, work in the hostile environments such as strong-electromagnetic field, data transmission and reading speed can not be quick in real time.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of network that need not additionally to lay at above-mentioned prior art, utilizes existing slack to finish the distributed optical fiber temperature monitoring system of constructing communication network function.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: this distributed optical fiber temperature monitoring system, comprise the main website of Surveillance center, the remote controlled substation that at least one links to each other and be subjected to its monitoring with main website of described Surveillance center by optical fiber, this remote controlled substation comprises temperature sensor module at least, it is characterized in that: main website of described Surveillance center includes two optical communications ports at least, described remote controlled substation includes two fiber optical transceivers at least, and the electricity mouth of these two fiber optical transceivers all is connected with described temperature sensor module, and the receiving end of the first fiber optical transceiver light mouth links to each other with the transmitting terminal of the second fiber optical transceiver light mouth in the described remote controlled substation, the transmitting terminal of the first fiber optical transceiver light mouth links to each other with the receiving end of the second fiber optical transceiver light mouth, and
When having only a remote controlled substation, the first fiber optical transceiver light mouth links to each other with first optical communications port of main website of Surveillance center by optical fiber in the described remote controlled substation, and the second fiber optical transceiver light mouth equally also links to each other with second optical communications port of main website of Surveillance center by optical fiber;
When two or more remote controlled substation, the first fiber optical transceiver light mouth links to each other with first optical communications port of main website of Surveillance center by optical fiber in first remote controlled substation, the second fiber optical transceiver light mouth of last remote controlled substation links to each other with second optical communications port of main website of Surveillance center by optical fiber, and two adjacent remote controlled substations also are to link to each other by optical fiber.
Main website of above-mentioned Surveillance center produces the network work clock, and all remote controlled substations are with this network work clock synchronization work.But, when the main website of Surveillance center is unusual, for assurance system energy operate as normal, above-mentioned remote controlled substation also includes a clock-pulse circuit, like this, when the main website of Surveillance center was unusual, the task of producing the network work clock will be served as in the remote controlled substation.
Generally can adopt the industrial server of mirror image redundancy in order to ensure the main website of the above-mentioned Surveillance center of reliability of communication.
Generally, the main website of Surveillance center need know the temperature signal that passes over from which remote controlled substation sends over, and, monitored instruction accurately to be sent down some remote controlled substation with the main website of Surveillance center, as further improvement, main website of above-mentioned Surveillance center has the routing table memory module that is used to store main website of Surveillance center self address information and described remote controlled substation address information.
For accurate transmission information, above-mentioned remote controlled substation also has the routing table memory module that is used to store main website of Surveillance center address information and each remote controlled substation address information, like this, each remote controlled substation is according to the destination address of the information of transmission, to send to the data message reservation of oneself and make and replying, and will not be that the data message that sends to oneself is transmitted.
In system, need to increase a remote controlled substation or certain remote controlled substation is unusual, the main website of Surveillance center just must redistribute the routing iinformation of remote controlled substations all in the system, as improvement, main website of above-mentioned Surveillance center has routing table information generation module is set.
Compared with prior art, the invention has the advantages that: by utilizing existing slack, two fiber optical transceivers are set in the remote controlled substation, and the receiving end and the transmitting terminal of two fiber optical transceiver light mouths in each remote controlled substation are coupled together respectively, the first fiber optical transceiver light mouth links to each other with first optical communications port of main website of Surveillance center by optical fiber in first remote controlled substation, the second fiber optical transceiver light mouth of last remote controlled substation links to each other with second optical communications port of main website of Surveillance center by optical fiber, and two adjacent remote controlled substations couple together adjacent light mouth by optical fiber, form the closed-loop path; Such networking mode does not need to increase extra networking cost; And signal transmits and to pass to the main website of Surveillance center by bi-directional ring, and when the optical fiber disconnecting of certain remote controlled substation one side or other occur when unusual, signal passes to the main website of Surveillance center by the opposite side optical fiber circuit; In addition, anti-radio frequency and electromagnetic interference (EMI) are arranged by the optical fibre set netting gear, anti-flaming, explosion-proof, anticorrosion, high pressure resistant and strong-electromagnetic field, radiation hardness, the precision height, data transmission and reading speed are fast, the advantage that can work in various harmful environment.
Description of drawings
Fig. 1 is a distributed optical fiber temperature sensing system networking structure synoptic diagram in the prior art;
Fig. 2 is a system group network structural representation when having only a remote controlled substation in the embodiment of the invention;
Fig. 3 is a system group network structural representation when in the embodiment of the invention a plurality of remote controlled substation being arranged.
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
The invention provides a kind of distributed optical fiber temperature sensing system, it comprises the main website of Surveillance center, this main website of Surveillance center includes two optical communications ports at least, the remote controlled substation that at least one links to each other and be subjected to its monitoring with main website of described Surveillance center by optical fiber, this remote controlled substation comprises temperature sensor module at least, have two fiber optical transceivers at least, this remote controlled substation can also be provided with other monitoring devices according to actual needs certainly.
The electricity mouth of two fiber optical transceivers all is connected with described temperature sensor module in the above-mentioned remote controlled substation, and the receiving end of the first fiber optical transceiver light mouth links to each other with the transmitting terminal of the second fiber optical transceiver light mouth, and the transmitting terminal of the first fiber optical transceiver light mouth links to each other with the receiving end of the second fiber optical transceiver light mouth.
In the networking process, if have only a remote controlled substation, the first fiber optical transceiver light mouth links to each other with first optical communications port of main website of Surveillance center by optical fiber in this remote controlled substation so, the second fiber optical transceiver light mouth equally also links to each other with second optical communications port of main website of Surveillance center by optical fiber, sees for details shown in Figure 2.
As Fig. 3, in the networking process, if two or more remote controlled substation is arranged, the first fiber optical transceiver light mouth links to each other with first optical communications port of main website of Surveillance center by optical fiber in first remote controlled substation 1 so, the second fiber optical transceiver light mouth of last remote controlled substation n links to each other with second optical communications port of main website of Surveillance center by optical fiber, and two adjacent remote controlled substations also are to link to each other by optical fiber.
In the practical communication process, distributed optical fiber temperature sensing system bottom provided by the invention adopts ICP/IP protocol.In order to ensure the reliability of communication, the main website of Surveillance center generally can adopt the industrial server of mirror image redundancy, and it is in the major state of total system network, produces the network work clock, and all remote controlled substations are with this network work clock synchronization work.But, when the main website of Surveillance center is unusual, for assurance system energy operate as normal, above-mentioned remote controlled substation also includes a clock-pulse circuit, like this, when the main website of Surveillance center was unusual, the task of producing the network work clock will be served as in the remote controlled substation.
In order to allow the remote controlled substation produce the network work clock, above-mentioned remote controlled substation can be for including the computing machine of clock-pulse circuit.
Certainly, when whole distributed optical fiber temperature sensing system is worked, the main website of Surveillance center need know the temperature signal that passes over from which remote controlled substation sends over, and, monitored instruction accurately to be sent down some remote controlled substation with the main website of Surveillance center, so just need do a sign to each workstation in the system, and the main website of Surveillance center can discern this and indicate, and main website of Surveillance center provided by the invention has the routing table memory module that is used to store main website of Surveillance center self address information and described remote controlled substation address information.
Distributed optical fiber temperature sensing system provided by the invention is when signal communication, because signal is loop communication, and the transmission of the signal of system has two loops, and signal transmits according to clockwise or counterclockwise both direction.Counterclockwise to be transmitted as example, the signal of remote controlled substation 2 is successively by remote controlled substation 3, by remote controlled substation 4 ... reach the second communication light mouth of main website of Surveillance center then, for accurate transmission information, above-mentioned remote controlled substation also has the routing table memory module that is used to store main website of Surveillance center address information and each remote controlled substation address information, like this, each remote controlled substation is according to the destination address of the information of transmission, to send to the data message reservation of oneself and make and replying, and will not be that the data message that sends to oneself is transmitted.And, when the main website of Surveillance center sends pilot signal for remote controlled substation 2, when signal transmits with counter clockwise direction, the main website of Surveillance center passes to remote controlled substation 2 after by remote controlled substation 1, if but the optical fiber disconnecting between remote controlled substation 2 and the remote controlled substation 1 or other abnormal conditions occur, at this moment, the main website of Surveillance center can pass through remote controlled substation n successively, remote controlled substation n-1, remote controlled substation 3, and then pass to remote controlled substation 2, like this, in the time of just avoiding effectively that signal is by point-to-point transmission in the prior art, if the defective that transmission medium just can not be communicated by letter unusually.
In system, need to increase a remote controlled substation or certain remote controlled substation is unusual, the main website of Surveillance center just must redistribute the routing iinformation of remote controlled substations all in the system, and main website of Surveillance center provided by the invention has routing table information generation module is set.
Claims (6)
1, a kind of distributed optical fiber temperature monitoring system, comprise the main website of Surveillance center, the remote controlled substation that at least one links to each other and be subjected to its monitoring with main website of described Surveillance center by optical fiber, this remote controlled substation comprises temperature sensor module at least, it is characterized in that: main website of described Surveillance center includes two optical communications ports at least, described remote controlled substation includes two fiber optical transceivers at least, and the electricity mouth of these two fiber optical transceivers all is connected with described temperature sensor module, and the receiving end of the first fiber optical transceiver light mouth links to each other with the transmitting terminal of the second fiber optical transceiver light mouth in the described remote controlled substation, the transmitting terminal of the first fiber optical transceiver light mouth links to each other with the receiving end of the second fiber optical transceiver light mouth, and
When having only a remote controlled substation, the first fiber optical transceiver light mouth links to each other with first optical communications port of main website of Surveillance center by optical fiber in the described remote controlled substation, and the second fiber optical transceiver light mouth equally also links to each other with second optical communications port of main website of Surveillance center by optical fiber;
When two or more remote controlled substation, the first fiber optical transceiver light mouth links to each other with first optical communications port of main website of Surveillance center by optical fiber in first remote controlled substation, the second fiber optical transceiver light mouth of last remote controlled substation links to each other with second optical communications port of main website of Surveillance center by optical fiber, and two adjacent remote controlled substations also are to link to each other by optical fiber.
2, distributed optical fiber temperature monitoring system according to claim 1 is characterized in that: described remote controlled substation also includes a clock-pulse circuit.
3, distributed optical fiber temperature monitoring system according to claim 1 is characterized in that: main website of described Surveillance center adopts the industrial server of mirror image redundancy.
4, distributed optical fiber temperature monitoring system according to claim 1 is characterized in that: main website of described Surveillance center has the routing table memory module that is used to store main website of Surveillance center self address information and described remote controlled substation address information.
5, distributed optical fiber temperature monitoring system according to claim 4 is characterized in that: described remote controlled substation also has the routing table memory module that is used to store main website of Surveillance center address information and each remote controlled substation address information.
6, distributed optical fiber temperature monitoring system according to claim 4 is characterized in that: main website of described Surveillance center has routing table information generation module is set.
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| CN200710164579A CN100589142C (en) | 2007-12-11 | 2007-12-11 | A kind of distributed optical fiber temperature monitoring system |
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| CN200710164579A CN100589142C (en) | 2007-12-11 | 2007-12-11 | A kind of distributed optical fiber temperature monitoring system |
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| CN102201962A (en) * | 2011-03-23 | 2011-09-28 | 上海灵信信息科技有限公司 | Light emitting diode (LED) full-color self-healing data transmission looped network |
| CN103124194B (en) * | 2011-11-18 | 2016-08-03 | 北京旋极信息技术股份有限公司 | The transmission system of current mode analog signal in private network |
| CN104880996A (en) * | 2014-02-27 | 2015-09-02 | 沈阳瑞德泰科电气有限公司 | High-performance industrial distributed bus IO system |
| CN106205110A (en) * | 2016-09-07 | 2016-12-07 | 国网浙江省电力公司温州供电公司 | A kind of power information acquisition system |
| CN108692746B (en) * | 2017-04-05 | 2022-07-12 | 中兴通讯股份有限公司 | Sensing monitoring terminal, sensing monitoring system and sensing monitoring method |
| CN110725987A (en) * | 2019-09-17 | 2020-01-24 | 国家电网有限公司 | a valve system |
| CN111965327B (en) * | 2020-07-28 | 2021-10-08 | 临沂矿业集团菏泽煤电有限公司 | Plane model test device and method for stratum subsidence law in mining of thick topsoil and thin bedrock |
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