CN111473855A - System for detecting rodent activity of power cable channel by using existing power relay accompanying optical cable - Google Patents
System for detecting rodent activity of power cable channel by using existing power relay accompanying optical cable Download PDFInfo
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- CN111473855A CN111473855A CN202010221013.7A CN202010221013A CN111473855A CN 111473855 A CN111473855 A CN 111473855A CN 202010221013 A CN202010221013 A CN 202010221013A CN 111473855 A CN111473855 A CN 111473855A
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- optical
- cable
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- optical cable
- vibration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
- G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
- G08B13/1654—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems
- G08B13/169—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems using cable transducer means
Abstract
The invention discloses a system for detecting the activity of rodents in a cable channel of a power cable by utilizing an existing power relay accompanying optical cable, which comprises an accompanying optical cable, a vibration signal receiving unit, a vibration signal generating unit and an optical analysis host, wherein the accompanying optical cable is used for converting the vibration signal into an optical signal and transmitting the optical signal to the optical analysis host; a power cable laid in the power cable channel while an accompanying optical cable is laid in the power cable channel; an optical analysis host which demodulates the optical signal and obtains position information of rodent activity; a computer for visually displaying positional information of the rodent activity. When a rodent moves around the cable, the optical cable is vibrated along with the movement of the rodent, and the light in the optical cable is disturbed to cause the corresponding change of the phase of the light, namely, the vibration signal is converted into the optical signal. The invention can realize the activity detection of the rodent by utilizing the conventional electric power accompanying optical cable without laying cables again, has low maintenance cost and greatly saves the cost.
Description
Technical Field
The invention relates to an optical cable vibration detection system, in particular to a system for detecting rodent movement of a power cable trench by using an existing power relay and an optical cable.
Background
The rodent chewing ability is strong, most of rodents are parasitized in a power cable channel, the power cable is inevitably bitten, once the power cable is bitten by the rodent, regional power failure is caused slightly, fire disaster is caused seriously, loss caused by the fire disaster cannot be estimated, even an electric power transportation and inspection management department does not know the cable damage point, manual work is needed to check the cable damage point one by one, and time cost and labor cost are increased undoubtedly.
The existing method for detecting the rodents in the power cable trench is not practical and effective, is safe and harmless, and is difficult to install in the cable trench if an infrared probe is adopted for detection, especially in a closed narrow cable trench, the installation is more unrealistic, and on the other hand, the manpower input is large, the equipment cost is high, and the detonation phenomenon is easily caused by the external environment.
Meanwhile, the infrared probe needs to be powered, and once the probe goes wrong, the maintenance cost is higher, and whether the equipment normally operates or not can not be known in real time.
Disclosure of Invention
Aiming at the problems, the invention provides an economical and economical optical cable vibration detection system which is high in reliability and can be stably used for a long time, and the system can accurately position the position where a rodent gnaws a cable and is beneficial to early warning in advance and maintenance and troubleshooting after the rodent gnaws the cable.
In order to achieve the above object, the present invention provides a system for detecting rodent activity in a cable channel of a power cable using an existing power relay-accompanied optical cable, the system comprising: the vibration of the accompanying optical cable is caused by the vibration generated by the rodent activity near the cable in the cable trench of the power cable, and the accompanying optical cable converts the vibration signal into an optical signal in the optical cable and transmits the optical signal to the optical analysis host; a power cable laid in the power cable channel while an accompanying optical cable is laid in the power cable channel; an optical analysis host which demodulates the optical signal and obtains accurate position positioning information of the rodent activity; and the display of the computer is used for visually displaying the accurate position positioning information of the rodent activity.
In a preferred mode, the accompanying optical cable is a three-core optical cable, the optical analysis host is connected with a starting point sensing box, the starting point sensing box is connected with the starting ends of two-core optical cables in the accompanying optical cable, and the tail ends of the two-core optical cables are connected with a terminal point sensing box; meanwhile, the optical analysis host is connected with the starting end of the other optical cable in the accompanying optical cables, and the tail end of the other optical cable in the accompanying optical cables is connected with the terminal point sensing box; the starting point sensing box and the end point sensing box are optical couplers and are used for splitting and combining optical signals.
Preferably, when vibration generated by the movement of a rodent around the cable acts on the companion optical cable, the time for the optical analysis host to transmit a light signal to the two-core optical cable of the three-core optical cable through the starting point sensing box and then to return to the optical analysis host through the finishing point sensing box and the other core optical cable is t 1; the time that the optical analysis host transmits a light signal to the other optical cable in the three-core optical cable simultaneously and then transmits the light signal back to the optical analysis host through the end point sensing box, the two-core optical cable and the starting point sensing box is t2, the time delay of the light signals respectively transmitted from the two-core optical cable and the other optical cable in the three-core optical cable due to vibration is t1-t2, and the distance x between the vibration positioning place and the optical analysis host is:
x＝L-(t1-t2)/2*c
wherein c is the speed of light, L is the total length of the accompanying optical cable, and the positioning information of the rodent moving around the cable can be calculated by the optical analysis host through the measured time t1, t2 and the formula.
Preferably, the optical analysis host and the computer are installed in a monitoring room and used for monitoring the power cable by related staff in real time.
In a preferable mode, distributed optical fiber vibration early warning system software is installed in the computer, accurate position positioning information of rodent activities obtained through analysis of the optical analysis host is transmitted to the distributed optical fiber vibration early warning system software and is displayed visually, and the accurate position positioning information of the rodent activities is sent to relevant workers through short messages.
Preferably, the accurate position positioning information of the vibration invasion area of each time of the rodent activity is stored in the distributed optical fiber vibration early warning system software of the computer in the form of logs, the distributed optical fiber vibration early warning system software automatically analyzes the logs at certain intervals, and then the accurate position positioning information of the vibration invasion area of the rodent frequent activity is sent to related staff and responsible leaders through short messages.
In a preferable mode, the optical analysis host sends an alarm of a vibration invasion event of rodent activity to the distributed optical fiber vibration early warning system software, and an alarm signal represents the vibration invasion event of rodent activity through a flag in a visual interface of the distributed optical fiber vibration early warning system software; when the alarm signal of the vibration invasion event indicating the rodent activity exceeds a certain intensity, the occurrence frequency of the vibration invasion event indicating the rodent activity is too high, and the flag turns red.
The invention has the beneficial effects that: the invention can realize the activity detection of the rodent by utilizing the conventional electric power accompanying optical cable without laying cables again, has low maintenance cost, greatly saves the cost, protects the safety of the electric power cable and can realize long-term safe use.
Drawings
FIG. 1 is a schematic view of the overall scheme of the present invention;
figure 2 is a schematic representation of a rodent activity;
FIG. 3 is a schematic view of a monitoring interface of the software of the present invention;
FIG. 4 is a schematic diagram of the connection between the optical analysis host and the accompanying cable.
Detailed Description
As shown in fig. 1, the present invention provides a rodent activity detection system for a power cable trench using an existing power relay-accompanied optical cable, the system comprising: the vibration of the accompanying optical cable is caused by the vibration generated by the rodent activity near the cable in the cable trench of the power cable, and the accompanying optical cable converts the vibration signal into an optical signal in the optical cable and transmits the optical signal to the optical analysis host; a power cable laid in the power cable channel while an accompanying optical cable is laid in the power cable channel; an optical analysis host which demodulates the optical signal and obtains accurate position positioning information of the rodent activity; and the display of the computer is used for visually displaying the accurate position positioning information of the rodent activity.
As shown in fig. 1, the optical analysis mainframe and the computer are installed in a monitoring room for real-time monitoring of the power cable by the relevant staff.
As shown in fig. 2, the schematic diagram of the activity of the rodent is shown, the present invention utilizes the accompanying optical cable laid in the same trench as the power cable, once the rodent moves around the cable, i.e. the optical cable laid in the same trench, the accompanying optical cable is vibrated, at the same time, the light in the optical cable is disturbed, the phase thereof changes correspondingly, i.e. the vibration signal is converted into the optical signal, the optical signal is transmitted to the optical analysis host, and the analysis host demodulates the signal, so as to obtain the accurate position positioning information of the rodent activity.
As shown in fig. 3, distributed optical fiber vibration early warning system software is installed in the computer, and the accurate position locating information of the rodent activity obtained by the analysis of the optical analysis host is transmitted to the distributed optical fiber vibration early warning system software for visual display, and the accurate position locating information of the rodent activity is sent to relevant workers through short messages.
As shown in fig. 3, the accurate position location information of the vibration invasion area of each time of the rodent activity is stored in the distributed optical fiber vibration early warning system software of the computer in the form of log, the distributed optical fiber vibration early warning system software automatically analyzes the log at regular intervals, and then sends the accurate position location information of the vibration invasion area of the rodent activity to the related staff and the responsible leader through short messages. The relevant leaders take corresponding measures according to the regional information of the rodent activity, such as: physical protection, medical protection, and the like.
As shown in fig. 3, the optical analysis host sends an alarm of a vibration intrusion event of rodent activity to the distributed optical fiber vibration early warning system software, an alarm signal represents a vibration intrusion event of rodent activity through a flag in a visual interface of the distributed optical fiber vibration early warning system software, and the system monitors the whole optical cable network accessed to the optical analysis host in real time, that is, monitors the position condition of the cable network corresponding to the whole optical cable network; when the alarm signal of the vibration invasion event indicating the rodent activity exceeds a certain intensity, the occurrence frequency of the vibration invasion event indicating the rodent activity is too high, and the flag turns red.
As shown in fig. 4, the accompanying optical cable is a three-core optical cable, the optical analysis host is connected to a starting point sensing box, the starting point sensing box is connected to the starting end of a two-core optical cable in the accompanying optical cable, and the tail end of the two-core optical cable is connected to a destination sensing box; meanwhile, the optical analysis host is connected with the starting end of the other optical cable in the accompanying optical cables, and the tail end of the other optical cable in the accompanying optical cables is connected with the terminal point sensing box; the starting point sensing box and the end point sensing box are optical couplers and are used for splitting and combining optical signals.
As shown in fig. 4, when vibration generated by the action of rodents around the cable acts on the companion optical cable, laser light is emitted from the TX side, that is, the time elapsed for the optical analysis main unit to transmit an optical signal to the two-core optical cable in the three-core optical cable through the origin sensing box and then back to the optical analysis main unit through the destination sensing box and the other core optical cable is t 1; the time for emitting laser from the RX side, that is, the optical analysis host simultaneously emits optical signals to the other optical cable in the three-core optical cable and then transmits the optical signals back to the optical analysis host through the destination sensing box, the two-core optical cable and the start sensing box is t2, the time delay of the optical signals respectively emitted from the two-core optical cable and the other optical cable in the three-core optical cable due to vibration is t1-t2, and the distance x between the location point of the vibration and the optical analysis host is:
x＝L-(t1-t2)/2*c
wherein c is the speed of light, L is the total length of the accompanying optical cable, and the positioning information of the rodent moving around the cable can be calculated by the optical analysis host through the measured time t1, t2 and the formula.
The system may be used for intrusion detection, but is not limited to rodent activity detection in power cable trenches.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (7)
1. A system for detecting rodent activity in a power cable raceway using existing power relays along with optical cables, the system comprising: the vibration of the accompanying optical cable is caused by the vibration generated by the rodent activity near the cable in the cable trench of the power cable, and the accompanying optical cable converts the vibration signal into an optical signal in the optical cable and transmits the optical signal to the optical analysis host; a power cable laid in the power cable channel while an accompanying optical cable is laid in the power cable channel; an optical analysis host which demodulates the optical signal and obtains accurate position positioning information of the rodent activity; and the display of the computer is used for visually displaying the accurate position positioning information of the rodent activity.
2. The system for detecting rodent activity in a power cable trench by using the existing power relay-associated optical cable according to claim 1, wherein the associated optical cable is a three-core optical cable, the optical analysis host is connected with a starting point sensing box, the starting point sensing box is connected with the starting end of a two-core optical cable in the associated optical cable, and the tail end of the two-core optical cable is connected with a terminal point sensing box; meanwhile, the optical analysis host is connected with the starting end of the other optical cable in the accompanying optical cables, and the tail end of the other optical cable in the accompanying optical cables is connected with the terminal point sensing box; the starting point sensing box and the end point sensing box are optical couplers and are used for splitting and combining optical signals.
3. The system for detecting the rodent activity in the cable channel of the power cable by utilizing the existing power relay accompanying optical cable as claimed in claim 1, wherein when vibration generated by the rodent moving around the cable acts on the accompanying optical cable, the optical analysis host transmits a light signal to the two-core optical cable in the three-core optical cable through the starting point sensing box and then transmits back to the optical analysis host through the finishing point sensing box and the other-core optical cable for t 1; the time that the optical analysis host transmits a light signal to the other optical cable in the three-core optical cable simultaneously and then transmits the light signal back to the optical analysis host through the end point sensing box, the two-core optical cable and the starting point sensing box is t2, the time delay of the light signals respectively transmitted from the two-core optical cable and the other optical cable in the three-core optical cable due to vibration is t1-t2, and the distance x between the vibration positioning place and the optical analysis host is:
x＝L-(t1-t2)/2*c
wherein c is the speed of light, L is the total length of the accompanying optical cable, and the positioning information of the rodent moving around the cable can be calculated by the optical analysis host through the measured time t1, t2 and the formula.
4. The system for detecting rodent activity in a power cable raceway using existing power relay-accompanied optical cables as claimed in claim 1, wherein said optical analysis host and said computer are installed in a monitoring room for real-time monitoring of the power cable by the relevant staff.
5. The system for detecting the rodent activity in the power cable trench by using the existing power relay-accompanied optical cable as claimed in claim 1, wherein the computer is installed with distributed optical fiber vibration early warning system software, and the accurate position positioning information of the rodent activity analyzed by the optical analysis host is transmitted to the distributed optical fiber vibration early warning system software for visual display, and is sent to the related staff by short messages.
6. The system for detecting the activity of the rodent in the cable trench of the power cable by utilizing the existing power relay-accompanied optical cable as claimed in claim 1, wherein the accurate position location information of the vibration invasion area of the rodent per time activity is stored in the distributed optical fiber vibration early warning system software of the computer in the form of log, the distributed optical fiber vibration early warning system software automatically analyzes the log at certain intervals, and then the accurate position location information of the vibration invasion area of the rodent which frequently moves is sent to related staff and responsible leaders through short messages.
7. The system for detecting rodent activity in a power cable trench by using the existing power relay-accompanied optical cable according to claim 1, wherein the optical analysis host alarms the distributed optical fiber vibration pre-warning system software about the vibration intrusion event of the rodent activity, and the alarm signal represents the vibration intrusion event of the rodent activity through a flag in a visual interface of the distributed optical fiber vibration pre-warning system software; when the alarm signal of the vibration invasion event indicating the rodent activity exceeds a certain intensity, the occurrence frequency of the vibration invasion event indicating the rodent activity is too high, and the flag turns red.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010221013.7A CN111473855A (en) | 2020-03-25 | 2020-03-25 | System for detecting rodent activity of power cable channel by using existing power relay accompanying optical cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010221013.7A CN111473855A (en) | 2020-03-25 | 2020-03-25 | System for detecting rodent activity of power cable channel by using existing power relay accompanying optical cable |
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| CN111473855A true CN111473855A (en) | 2020-07-31 |
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| CN202010221013.7A Pending CN111473855A (en) | 2020-03-25 | 2020-03-25 | System for detecting rodent activity of power cable channel by using existing power relay accompanying optical cable |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995030216A1 (en) * | 1994-04-28 | 1995-11-09 | Doppelmayr Seilbahn-Vertriebs-Gmbh | Ropeway safety monitoring system |
| CN1837674A (en) * | 2006-04-14 | 2006-09-27 | 北京工业大学 | Apparatus and method for monitoring pipeline leakage based on distributed optical fiber acoustic sensing technology |
| CN203038398U (en) * | 2013-01-29 | 2013-07-03 | 广州供电局有限公司 | Damage-preventing monitoring system for power cable |
| CN103258256A (en) * | 2013-04-12 | 2013-08-21 | 国家电网公司 | Cable line condition monitoring multi-dimensional visual management platform |
| CN203165121U (en) * | 2013-01-29 | 2013-08-28 | 广州供电局有限公司 | Power cable anti-damage monitoring system |
| CN103901532A (en) * | 2012-12-26 | 2014-07-02 | 西安金和光学科技有限公司 | Multi-core optical fiber, sensing device with same and operating method of sensing device |
| CN104021638A (en) * | 2014-07-03 | 2014-09-03 | 中交第二公路勘察设计研究院有限公司 | Method and device for preventing cable along highway from being stolen through early warning |
| CN105371941A (en) * | 2015-12-16 | 2016-03-02 | 中国船舶重工集团公司第七〇五研究所 | Distributed optical fiber vibration sensing detection method based on optical circulator |
| CN105528841A (en) * | 2014-09-30 | 2016-04-27 | 国家电网公司 | External force damage prevention early-warning system for power cable |
| CN107861134A (en) * | 2017-11-09 | 2018-03-30 | 南京派光信息技术有限公司 | Based on the Big Dipper, distribution type fiber-optic and the steel tower of radar detection real-time monitoring system |
| CN110222949A (en) * | 2019-05-15 | 2019-09-10 | 中国移动通信集团内蒙古有限公司 | Trunk cable method for early warning, device, equipment, system and computer storage medium |
-
2020
- 2020-03-25 CN CN202010221013.7A patent/CN111473855A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995030216A1 (en) * | 1994-04-28 | 1995-11-09 | Doppelmayr Seilbahn-Vertriebs-Gmbh | Ropeway safety monitoring system |
| CN1837674A (en) * | 2006-04-14 | 2006-09-27 | 北京工业大学 | Apparatus and method for monitoring pipeline leakage based on distributed optical fiber acoustic sensing technology |
| CN103901532A (en) * | 2012-12-26 | 2014-07-02 | 西安金和光学科技有限公司 | Multi-core optical fiber, sensing device with same and operating method of sensing device |
| CN203038398U (en) * | 2013-01-29 | 2013-07-03 | 广州供电局有限公司 | Damage-preventing monitoring system for power cable |
| CN203165121U (en) * | 2013-01-29 | 2013-08-28 | 广州供电局有限公司 | Power cable anti-damage monitoring system |
| CN103258256A (en) * | 2013-04-12 | 2013-08-21 | 国家电网公司 | Cable line condition monitoring multi-dimensional visual management platform |
| CN104021638A (en) * | 2014-07-03 | 2014-09-03 | 中交第二公路勘察设计研究院有限公司 | Method and device for preventing cable along highway from being stolen through early warning |
| CN105528841A (en) * | 2014-09-30 | 2016-04-27 | 国家电网公司 | External force damage prevention early-warning system for power cable |
| CN105371941A (en) * | 2015-12-16 | 2016-03-02 | 中国船舶重工集团公司第七〇五研究所 | Distributed optical fiber vibration sensing detection method based on optical circulator |
| CN107861134A (en) * | 2017-11-09 | 2018-03-30 | 南京派光信息技术有限公司 | Based on the Big Dipper, distribution type fiber-optic and the steel tower of radar detection real-time monitoring system |
| CN110222949A (en) * | 2019-05-15 | 2019-09-10 | 中国移动通信集团内蒙古有限公司 | Trunk cable method for early warning, device, equipment, system and computer storage medium |
Non-Patent Citations (3)
| Title |
|---|
| 杨斌等: "新型光纤电缆故障定位系统", 《光电技术应用》 * |
| 胡利娜: "分布式光纤传感监测技术在燃气管网数字化开发中的应用", 《山西电子技术》 * |
| 郭澎: "油气管道防盗光纤预警系统的研究", 《光纤与电缆及其应用技术》 * |
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Application publication date: 20200731 |