CN109147244A - A kind of aquafarm burglar alarm based on magnetic field signal and optical fiber barrier combined detection - Google Patents
A kind of aquafarm burglar alarm based on magnetic field signal and optical fiber barrier combined detection Download PDFInfo
- Publication number
- CN109147244A CN109147244A CN201710455825.6A CN201710455825A CN109147244A CN 109147244 A CN109147244 A CN 109147244A CN 201710455825 A CN201710455825 A CN 201710455825A CN 109147244 A CN109147244 A CN 109147244A
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- Prior art keywords
- magnetic field
- underwater
- unit
- optical fiber
- wireless communication
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Classifications
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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
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2491—Intrusion detection systems, i.e. where the body of an intruder causes the interference with the electromagnetic field
- G08B13/2494—Intrusion detection systems, i.e. where the body of an intruder causes the interference with the electromagnetic field by interference with electro-magnetic field distribution combined with other electrical sensor means, e.g. microwave detectors combined with other sensor means
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Emergency Alarm Devices (AREA)
Abstract
A kind of aquafarm burglar alarm based on magnetic field signal and optical fiber barrier combined detection, belong to aquaculture underwater protection technical field, it is characterized in that: burglar alarm is made of underwater culture cage, magnetic field sensor unit, optical fiber barrier, signal processing unit, underwater sound wireless communication unit and bank station monitoring unit；Signal processing unit is handled raw magnetic field data using low-pass filtering and time-domain difference method, carries out early warning by setting magnetic field threshold, and finally judged by the way that optical fiber barrier damaged condition thresholding is arranged；Warning message is exported according to signal judging result and gives underwater sound wireless communication unit underwater portion by signal processing unit；Underwater sound wireless communication unit underwater portion sends warning message, and warning message by transmitting antenna is sent to bank station monitoring unit after receiving warning message by underwater sound wireless communication unit water surface part, and bank station monitoring unit carries out sound-light alarm after receiving warning message.
Description
Technical field
The invention belongs to aquacultures to protect field under water, be related to a kind of based on magnetic field signal and optical fiber barrier joint
The aquafarm burglar alarm of detection, in particular to it is a kind of comprehensive according to magnetic field signal and the progress of optical fiber barrier damaged condition
Judgement is closed, realizes the aquafarm anti-theft device of Realtime Alerts and monitoring.
Background technique
In aquaculture process, frequent occurrence by illegal mining the case where, raiser loss it is huge.It is domestic for underwater at present
The warning device of protection is mostly to be detected using the infrared characteristic that infrared acquisition principle radiates stealer, however work as seabed energy
When degree of opinion is low, ocean current flow velocity is larger, the performance of infrared detection system will be unable to satisfy raiser and prevent under water by large effect
The purpose of shield.Due to being not easy to take precautions against to marine product illegal mining person in shallow sea, it is badly in need of the new effective anti-theft measure of research, this is also to ensure
The important channel that fisherman's property is not suffered a loss.
There is certain magnetic equipment since stealer is self-contained, and stealer to enter underwater culture cage must be right
Optical fiber barrier carries out a degree of destruction, therefore passes through the judgement side of combined magnetic field signal and optical fiber barrier damaged condition
Formula can greatly improve the detection probability to stealer.
Summary of the invention
It is antitheft the purpose of the present invention is designing a kind of aquafarm based on magnetic field signal and optical fiber barrier combined detection
Warning device solves to carry out marine product seedling stealer under the conditions of low visibility, environmental disturbances strong marine background real-time
The problem of alarm and monitoring.
The technical scheme is that entire burglar alarm is made of 6 parts, 6 parts are respectively underwater support
Grow cage, magnetic field sensor unit, optical fiber barrier, signal processing unit, underwater sound wireless communication unit, bank station monitoring unit；Water
Lower breeding cage includes four walls and cage bottom, and stainless steel material is selected to be welded；Magnetic field sensor unit includes 2 magnetic field sensors
With 2 sealed compartments, for testing the total field signal in magnetic field, magnetic field sensor type includes but is not limited to fluxgate type magnetic field sensing
Device, 2 magnetic field sensors are installed at the diagonally opposing corner of underwater culture cage；Optical fiber barrier is welded by 62 optical fiber, is constituted
800 consistent square nets of size, the side length of grid are 0.1 meter, and optical fiber barrier is covered on above underwater culture cage, is made
For the top cover of underwater culture cage；Underwater sound wireless communication unit includes underwater portion and water surface part；Signal processing unit and magnetic field
It is connected by data input cable with data input light cable between sensor unit and optical fiber barrier, data input cable is 4 cores
Cable, it is 2 core optical cables that data, which input optical cable,；By 1 number between signal processing unit and underwater sound wireless communication unit underwater portion
It is connected according to output cable, data output cable is 3 core cables；Signal processing unit is by power supply module, data acquisition module, data
Processing module and signal judgment module and seal casinghousing composition, power supply module use 3 cores in data input cable electric respectively
2 core cables of cable and data output cable provide voltage for magnetic field sensor and underwater sound wireless communication unit underwater portion, number
Magnetic field and optical fiber are believed using 2 core optical cables in the 1 core cable and data input light cable in data input cable according to acquisition module
It number is acquired, data processing module is handled raw magnetic field data using low-pass filtering and time-domain difference method, signal
Judgment module carries out the early warning of intrusion target by setting magnetic field threshold, is carried out by setting optical fiber barrier damaged condition thresholding
Power supply module, data acquisition module, data processing module, signal judgment module are packaged in seal casinghousing by conclusive judgement jointly
In；Signal processing unit is exported by 1 core cable of data output cable to the underwater sound according to signal judging result, by warning message
Wireless communication unit underwater portion；Underwater sound wireless communication unit underwater portion sends warning message, underwater sound wireless communication unit water
Warning message is sent to by bank station monitoring unit by transmitting antenna after face tap receipts warning message, bank station monitoring unit receives
Sound-light alarm is carried out after to warning message.
The invention has the advantages that:
Traditional aquaculture burglar alarm is mainly based upon human infrared signal, judges whether there is diver's progress
Marine product illegal mining, however when seabed visibility is lower, detection performance will be very restricted, and infrared detection device is made
Valence is high, is unable to satisfy the purpose of aquafarm burglar alarm；Using based on magnetic field signal and optical fiber barrier combined detection
Burglar alarm carries out comprehensive judgement by combining magnetic anomaly and optical fibre damage degree, and by court verdict by the underwater sound without
Line communication unit is sent to bank station monitoring unit, can be realized the Realtime Alerts to illegal mining person and monitoring.
Detailed description of the invention
Fig. 1 underwater culture cage and the equipment schematic diagram being mounted thereon.
Fig. 2 signal processing unit schematic diagram.
Fig. 3 underwater sound wireless communication unit water surface partial schematic diagram.
Fig. 4 bank station monitoring unit schematic diagram.
Appended drawing reference: 11 optical fiber barriers；12 underwater sound wireless communication unit underwater portions；13 data output cables；14 letters
Number processing unit；15 data input cables；16 data input optical cable；17 underwater culture cages；18 magnetic field sensors.
21 seal casinghousings；22 power supply modules；23 data acquisition modules；24 data processing modules；25 signal judgment modules.
31 transmitting antennas；32 underwater sound wireless communication unit control modules；33 floating bodies；34 water surface underwater sound modems；35
Cable；36 sinkers.
41 receiving antennas；42 warning message transmission cables；43 sound-light alarm equipment.
Specific embodiment
A specific embodiment of the invention is described in detail below with reference to technical solution and attached drawing.
Step 1: the composition of burglar alarm
Burglar alarm can be divided into underwater culture cage, magnetic field sensor unit, optical fiber barrier, signal processing list
Member, underwater sound wireless communication unit, bank station monitoring unit, data input cable, data input optical cable, data output cable and alarm
Information transmission cable.Magnetic field sensor unit is made of 2 magnetic field sensors and 2 sealed compartments, and optical fiber barrier is compiled by optical fiber
It knits, signal processing unit is by power supply module, data acquisition module, data processing module, signal judgment module and sealing
Shell composition, underwater sound wireless communication unit are made of underwater portion and water surface part, and bank station monitoring unit is by receiving antenna, alarm
Information transmission cable and acousto-optic warning device composition.
Step 2: material and structure size
Underwater culture cage includes 5 faces, respectively four walls and cage bottom.Underwater culture cage is selected stainless with a thickness of 5 millimeters
Steel plate is welded, and inside dimension is 4000 millimeters long, 2000 mm wides and 1000 millimeters of height.
Magnetic field sensor unit is not less than 2 magnetic field sensings of ± 100000nT by test frequency range covering DC-1Hz, range
Device and 2 sealed compartment compositions, magnetic field sensor type include but is not limited to test the fluxgate type magnetic field sensor of geomagnetic total field；
Magnetic field sensor is fixedly installed in sealed compartment, and sealed compartment is made of cabin and end cap, and cabin and cap material select nylon, close
The outer shape of batten down is cylindrical body, and internal hollow out, interior space dimension is determined with the magnetic field sensor actual size selected, and is protected
It demonstrate,proves magnetic field sensor to stablize in cabin, the external dimensions of sealed compartment is equally determined with the actual size of magnetic field sensor, sealed compartment
Thickest is no more than 30 millimeters, and end cap end face is identical as sealing cabin face size, bores 1 diameter in end cap central position and is
20 millimeters of hole goes out cable mouth as data input cable, between sealed compartment end cap and cabin and cable and out between cable mouth
Take encapsulation process.
Optical fiber barrier by 21 root long degree is 4 meters, the optical fiber that 41 root long degree are 2 meters is welded, the length of net is 4 meters,
Width is 2 meters, includes 800 consistent square nets of size, side length of element 0.1m in net.
Signal processing unit seal casinghousing outer shape be cylindrical body, cabin material selection PVC, end cap select POM material,
Electronic compartment cabin height is 500 millimeters, internal diameter is 180 millimeters, outer diameter is 200 millimeters；Seal casinghousing ending cover thickness is 20 millimeters,
End cap face size is identical as seal casinghousing face size, and the hole that 4 diameters are 20 millimeters, respectively 2 numbers are bored on end cap
It is uniform according to cable mouth, 4 holes out into cable mouth and 1 data output cable into cable mouth, 1 data input optical cable of input cable
It is distributed in around end cap central position, 4 holes cannot be overlapped between each other, the straight line of the distance of center circle end cap central position in 4 holes
Distance is all 40 millimeters；Power supply module, data acquisition module, data processing module are installed inside signal processing unit seal casinghousing
With signal judgment module, each module is fixedly installed in inside seal casinghousing；Encapsulation process between seal casinghousing and end cap, into cable mouth
Processing is sealed between cable mouth and data input cable, data input optical cable and data output cable out.
Underwater sound wireless communication unit includes underwater portion and water surface part, and wherein underwater sound wireless communication unit water surface part is wrapped
Include water surface underwater sound modem, floating body, transmitting antenna, underwater acoustic communication unit control module, cable and sinker, floating body material choosing
With vinyon, outer shape is cylindrical body, is highly 200 millimeters, and surface diameter is 400 millimeters, is equipped with inside floating body
There are sinker in the control module of underwater acoustic communication unit, floating body lower part by cable system, and the material selection cement of sinker is cast, and shape is
Cylindrical body, weight 10kg.
Bank station monitoring unit includes receiving antenna, warning message transmission cable and warning device, and warning device selection can
The equipment for carrying out sound-light alarm.
Data transfer cable includes 5, and 2 are data input cable, and 1 inputs optical cable for data, and 1 is data output electricity
Cable, 1 is warning message transmission cable.It is all 20 millimeters that 5 datas, which transmit cable diameter, by 4 inside 2 data input cables
Mutually isolated copper core composition, 1 data input cable interior is made of 2 parallel optical fiber, inside 1 data output cable
It is made of 3 mutually isolated copper cores, is made of inside 1 warning message transmission cable 1 copper core.
Step 3: working principle
Magnetic field sensor is fixedly installed on the outside of any diagonally opposing corner of four wall of underwater culture cage, and magnetic field sensor is located at underwater
The top of breeding cage wall；Optical fiber barrier is fixedly installed in the top of underwater culture cage, the top cover as underwater culture cage；Signal
Processing unit is fixedly installed in the middle part on the outside of any wall of underwater culture cage；Underwater sound wireless communication unit underwater portion is installed on water
The top of the lower any wall of breeding cage；It is connected between magnetic field sensor and signal processing unit by data input cable, optical fiber stops
By data input optical cable connection, signal processing unit and underwater sound wireless communication unit underwater portion between net and signal processing unit
Between connected by data output cable；The anchoring of underwater sound wireless communication unit water surface part in coastline surrounding waters, by floating body and
Sinker controls position and the posture of underwater sound wireless communication unit water surface part, and transmitting antenna is installed on above floating body；Bank station monitoring
The receiving antenna of unit is installed on that electromagnetic communication is smooth outdoor or window, and warning device is installed on interior, receiving antenna and
It is connected between warning device by warning message transmission cable.
After device connection is completed, data acquisition module, data processing module and signal in setting signal processing unit
Judgment module enters working condition, and burglar alarm will start on duty at this time.When there is stealer to slip near device, due to
Stealer is carried with certain magnetic equipment, and the magnetic field sensor for being installed on different spatial can receive different magnetic field
The signal of size.It is poor that data processing module will make time domain after two magnetic field sensor received signals progress 0.5Hz low-pass filtering
Divide processing, setting magnetic field signal detection threshold is 2nT.Signal judgment module determines whether that stealer enters according to the thresholding of setting
It invades, when judging result is "Yes", signal judgment module will enter alert status, not alarm at this time, waiting further confirms that；
When judging result is "No", signal judgment module is still in state on duty.Stealer dives beneath the water breeding cage inside must be right
Optical fiber barrier is destroyed, and according to the realistic objective size of stealer, the thresholding of setting signal judgment module is damage grid
Number is not less than 12, i.e., when the pixilated grid number that data acquisition module receives is greater than or equal to 12, signal judgment module
Final judgement will be made, warning message is passed into underwater sound wireless communication unit underwater portion, underwater sound wireless communication unit is underwater
The underwater sound signal for carrying warning message is sent to water surface underwater sound modem, the modulation of the water surface underwater sound by Seawater by part
Demodulator receives and is sent to bank station monitoring unit by transmitting antenna after information, and bank station monitoring unit receiving antenna receives report
A high level signal is transmitted to warning device by warning message transmission cable after alert information, warning device starts at this time, into
Row sound-light alarm；When pixilated grid number is less than 12, then it is judged as marine growth or other background interferences, signal processing unit will
Warning message is not sent, warning device does not start at this time.
Claims (1)
1. a kind of aquafarm burglar alarm based on magnetic field signal and optical fiber barrier combined detection, including underwater culture
Cage, magnetic field sensor unit, optical fiber barrier, signal processing unit, underwater sound wireless communication unit, bank station monitoring unit and number
According to transmission cable, it is characterized in that: under water on breeding cage install magnetic field sensor unit, optical fiber barrier, signal processing unit and
Underwater sound wireless communication unit underwater portion, magnetic field sensor type are fluxgate type magnetic field sensor, the fluxgate type magnetic field
Sensor is also possible to that the other types of magnetic field sensor of geomagnetic total field can be tested；Signal processing unit and magnetic field sensor
It is connected by data input cable with data input light cable between unit and optical fiber barrier, signal processing unit and underwater sound channel radio
It is connected between news unit underwater portion by data output cable；Signal processing unit is by power supply module, data acquisition module, data
Processing module and signal judgment module and seal casinghousing composition, power supply module is respectively magnetic field sensor and underwater sound channel radio
It interrogates unit underwater portion and voltage is provided, data acquisition module is acquired magnetic field and fiber-optic signal, and data processing module is to adopting
The magnetic field data collected is handled, and signal judgment module carries out the early warning of intrusion target by setting magnetic field threshold, by setting
Optical fiber barrier damaged condition thresholding is set finally to be judged；Signal processing unit is according to signal judging result, by warning message
It is exported by data output cable and gives underwater sound wireless communication unit underwater portion；Underwater sound wireless communication unit underwater portion sends report
Alert message, underwater sound wireless communication unit water surface part receive and warning message are sent to bank station by transmitting antenna after warning message
Monitoring unit, bank station monitoring unit carry out sound-light alarm after receiving warning message.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710455825.6A CN109147244A (en) | 2017-06-16 | 2017-06-16 | A kind of aquafarm burglar alarm based on magnetic field signal and optical fiber barrier combined detection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710455825.6A CN109147244A (en) | 2017-06-16 | 2017-06-16 | A kind of aquafarm burglar alarm based on magnetic field signal and optical fiber barrier combined detection |
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| CN109147244A true CN109147244A (en) | 2019-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710455825.6A Pending CN109147244A (en) | 2017-06-16 | 2017-06-16 | A kind of aquafarm burglar alarm based on magnetic field signal and optical fiber barrier combined detection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112885009A (en) * | 2021-01-26 | 2021-06-01 | 张韶飞 | Solar energy aquaculture is with thing networking deep water resistance to compression burglar alarm |
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Application publication date: 20190104 |