CN102540224A - Fishing net tracker based on automatic ship identification technology and method thereof - Google Patents
Fishing net tracker based on automatic ship identification technology and method thereof Download PDFInfo
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- CN102540224A CN102540224A CN2011104128284A CN201110412828A CN102540224A CN 102540224 A CN102540224 A CN 102540224A CN 2011104128284 A CN2011104128284 A CN 2011104128284A CN 201110412828 A CN201110412828 A CN 201110412828A CN 102540224 A CN102540224 A CN 102540224A
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Abstract
The invention provides a fishing net tracker based on an automatic ship identification technology, and the fishing net tracker is characterized by comprising a digital baseband system; the digital baseband system is connected with a global positioning system (GPS) antenna, and is connected with an automatic identification system (AIS) antenna through a high-frequency modulator and a power amplifier; and a battery respectively supplies power to the digital baseband system, the high-frequency modulator and the power amplifier through a power management module. By adopting a communication protocol which is compatible with the AIS, showing the ship as an AIS ship, working at longer transmission intervals and transmitting an AIS standard message to fishing vessels and ships around, the fishing vessel can use any equipped AIS compatible equipment to monitor the position of a fishing net, so that the remote tracking of the fishing net is realized, and the fishing net can be recovered even if the fishing net leaves the sight range.
Description
Technical field
The present invention relates to deep-sea fishing production and maritime affairs security fields, mainly serve the fishing net of ocean fishing vessel fishing operation and follow the tracks of.
Background technology
Long range fishing operation intensity is big, dangerous high, perfect day by day along with each item fishery legislation, and trawling is replaced by the off line operation of freedom gradually, each launching-out operation, a long range fishing ship will carry 5 to 8 large-scale fishing nets, and off line scope has reached 3 to 5 nautical miles.Fishing net waves with ocean current voluntarily, be easy to the situation that fishing net is lost takes place, and the price of fishing net is expensive day by day, and the fisherman concentrates on guard's fishing net the marine key operation time.Guard's mode mainly is original " seeing ", to night then auxiliary by means of the light of fishing net lamp.Under inclement weather, traditional " seeing " and lamp all can't satisfy the demands, and the fishing net horizon range of in a single day having blown out is just very lost easily.
Meanwhile coastal traffic is busy day by day, often passes through the fishing ground, and large-scale ship is current often to be difficult to notice fishing net, and the fishing net traction often takes place, and fishing net twines the situation of stirring screw propeller, all brings bigger economic loss for fisherman and passing ships, causes dispute.
Comprehensive the demand, a kind of technology and equipment is badly in need of in long range fishing, can reduce fishing net guard operation intensity, realizes the equipment that fishing net is followed the tracks of, and realizes that passing ships are visible simultaneously, thereby reduces the generation of ship traction fishing net incident.
Summary of the invention
The technical matters that the present invention will solve is: a kind of fishing net tracker and method thereof based on the boats and ships automatic identification technology is provided; The fishing net current location is sent on fishing boat and other passing ships, make these ships can pass through standard A IS device learns fishing net current location information.
The present invention solves the problems of the technologies described above the technical scheme of being taked to be: a kind of fishing net tracker based on the boats and ships automatic identification technology; It is characterized in that: it comprises digital baseband system; Digital baseband system is connected with gps antenna, and is connected with the AIS antenna through high-frequency modulator, power amplifier; Battery is respectively digital baseband system, high-frequency modulator and power amplifier power supply through power management module.
Press such scheme, described digital baseband system comprises: the GPS module that is used for receiving position and velocity information; Be used for position, speed Tracking device identification number and title packing are produced the microcontroller and the BBP of AIS baseband data packet; The said high-frequency modulator of described microprocessor controls generates required high-frequency carrier signal, controls BBP simultaneously and generates baseband signal, and baseband signal and carrier signal are launched via the AIS antenna after power amplifier mixes amplification; Microcontroller obtains position, speed, directional information from the GPS module.
Press such scheme, described BBP, GPS module, high-frequency modulator and power amplifier are controlled through triode by microprocessor respectively.
Press such scheme, described digital baseband system, high-frequency modulator, power amplifier, battery and power management module all are arranged in the can and are installed on the supporting floatation device of fishing net.
Press such scheme, described microprocessor is selected low power processor STM32F103RBT6 for use.
Based on the fishing net tracking of boats and ships automatic identification technology, it is characterized in that: it may further comprise the steps:
1) sleep clock is set, only keeps current location information under the dormant state;
2) judge whether voltage is low excessively, if cross the low dormancy that then continues;
3) send frequency lock and instruct to the VCO lock part, indicate its with frequency lock on the AIS dedicated frequency, and power amplifier carried out voltage bias make power amplifier work;
4) GPS positioning searching is located successfully back emission gps signal with receiving position and velocity information;
5) the Position And Velocity information package that the GPS module is received produces the AIS baseband data packet, sends through the AIS network.
Described sleep clock is 32.768KHZ.
The course of work of the present invention is: the GPS module provides Position And Velocity information to microcontroller; Microcontroller and BBP produce the AIS baseband data packet with the packing of static informations such as above-mentioned information and tracker identification number, title; Modulation through high-frequency modulator; Generate the high-frequency signal of 161.975/162.025MHZ, this signal by power amplifier amplify the back by the AIS antenna to external radiation, realize sending at a distance.Power management module then is that starting point is to each module for power supply with the powered battery.
After the system start-up of fishing net tracker, judge at first whether supply voltage is low excessively,,, prevent the battery over-discharge can with the protection battery if mistake is hanged down then system is carried out dormancy; If cell voltage meets the demands, then carry out frequency lock, frequency lock (162MHz) on the AIS dedicated frequency through VCO (voltage-controlled oscillator); Then power amplifier is carried out voltage bias, make power amplifier work; The GPS module begins to position search afterwards, successfully just launches GPS information if locate, if the location failure is just reorientated; This system hibernates is 3 minutes after the successful launch, starts again then.
Beneficial effect of the present invention is:
1, the present invention adopts the communications protocol compatible with AIS; And with oneself being expressed as an AIS ship; With long transmission interval work, to fishing boat and the AIS of ship emission on every side standard message, fishing boat can use any AIS compatible equipment that has been equipped with to realize its position is monitored; Realized the remote tracking of fishing net, also can recover even fishing net leaves horizon range.
2, microcontroller adopts low power processor STM32F103RBT6, and except microcontroller, the every other power supply with electric device all controlled by triode, under park mode, and outage fully; Microcontroller regularly gets into park mode, uses 32.768KHZ as sleep clock, keeps a small amount of current location information, and power consumption is reduced to 50uA.
3, the VCO frequency generation circuit adopts the LMX2332 chip that it is carried out quick lock in, can VCO be reduced to 500us locking time, thereby reduce the locking power consumption.
3, compatible existing AIS equipment on the fishing boat has reduced the outfit difficulty of whole system.
4, can react the fishing net position to passing ships, reduce the navigation risk.
Description of drawings
Fig. 1 is system's composition diagram of one embodiment of the invention.
Fig. 2 is the circuit theory diagrams of microcontroller.
Fig. 3 is the circuit diagram of BBP.
Fig. 4 is the circuit diagram of high-frequency modulator.
Fig. 5 is the circuit diagram of GPS module.
Fig. 6 is the circuit diagram of power amplifier.
Fig. 7 is the circuit diagram of power management module.
Fig. 8 is a work exemplary plot of the present invention.
Fig. 9 is a process flow diagram of the present invention.
Embodiment
As shown in Figure 1, present embodiment comprises digital baseband system, and digital baseband system is connected with gps antenna, and is connected with the AIS antenna through high-frequency modulator, power amplifier; Battery is respectively digital baseband system, high-frequency modulator and power amplifier power supply through power management module.Digital baseband system comprises: the GPS module that is used for receiving position and velocity information; Be used for position, speed Tracking device identification number and title packing are produced the microcontroller and the BBP of AIS baseband data packet; Said gps antenna, GPS module, microcontroller, BBP and said high-frequency modulator are connected in order.
Fig. 2 is the circuit theory diagrams of microcontroller, and it adopts low power processor STM32F103RCT6, and power consumption can be reduced to 3uA under low-power consumption mode, keeps the memory space of 20 bytes simultaneously.As scheme STM32F103RCT6 pin 5,6, and need to connect extraordinary crystal oscillator, use 10P characteristic impedance 32768KHZ usually, use 6P characteristic impedance 32768KHZ crystal oscillator here, can make stand-by power consumption drop to 1uA, thereby prolong equipment service time from 100uA.Harmful effect is: in 100 times start, have 1 to 2 time and start failure, machine is whole to be used but do not influence.
Fig. 3 is the circuit diagram of BBP, and the BBP of use is this domain-specific, and the higher and park mode of power consumption is very easily made mistakes, and in order effectively to reduce its power consumption, has ad hocly counted special-purpose power-down circuit, to guarantee its not power consumption fully under park mode.In Fig. 3, the system power supply network is cmx7042_3.3V_, and this network is controlled by Q6SI2301i P type FET in Fig. 7.Pay special attention to be that master chip CMX7042L4 clock frequency must be used active crystal oscillator, can reach the 3PPM degree of stability of AIS demand.But in dormancy, the active crystal oscillator of CMX7042L4 must cut off the power supply with master chip, to reduce power consumption.Active crystal oscillator power consumption is about 1mA, must outage in dormancy.
Fig. 4 is the circuit diagram of high-frequency modulator, uses typical VCO circuit, for reducing power consumption, except design dormancy power switch, has used special matching value in the circuit, even make it in normal operating conditions, it is minimum that power consumption also can reach.In Fig. 4, the main oscillations pipe is Q25, and model is the BFR540 of NXP; R274 and R180 are clamp diode, make Q25 be in magnifying state, through improving the value of R274 and R180; Reduced the lock current of VCO, but prolonged the locking time of VCO, because VCO mainly is in the dormancy duty; This improvement does not influence real work, but in program, needs extra process, waits for that VCO locks completion and can launch.
Fig. 5 is the circuit diagram of GPS module, has used the low-power consumption GPS module, and has added power switch.The GPS module needs to adopt the special technique means can reduce its power consumption in the middle of using.In the system, GPS location power consumption accounts for 80% of total system power consumption.Generally, the GPS power consumption is divided into two states, searching satellite state 25mA, and operate as normal 10mA is accomplished in search.For the fishing net tracker that is interrupted work, the GPS major part all is in the breakpoint state.Start from off-position, GPS is divided into cold start-up and warm start, and the cold start-up time is longer, is about 2 minutes; Warm start is very fast, is about 30 seconds.Warm start has under two kinds of situation and can realize, one is that power-off time is shorter, about 20 seconds, surpasses 20 seconds and just will get into cold start-up; Second kind of situation is that the current satellitosis of outside directly input can make it get into the warm start state fast.In order to make it get into warm start, MCU can read the ephemeris state of GPS module output behind the GPS location, be kept in the backup space of said 20 bytes of preamble; After the MCU dormancy is restarted, read ephemeris in the heavy backup space, among the input GPS module, just can let the GPS module get into the warm start state rapidly, thereby reduce search time, reduce power consumption.
Fig. 6 is the circuit diagram of power amplifier; Adopt the RF5110G radio frequency power amplification modules, independently power switch makes outage fully under its secondary dormancy pattern, after emission that and if only if is about to start, VCO lock fully; Module just starts, and has reduced its power consumption to greatest extent.
Fig. 7 is the circuit diagram of power management module.
During use, digital baseband system, high-frequency modulator, power amplifier, battery and power management module all are arranged in the can and are installed on the supporting floatation device of fishing net.
Fig. 9 is a process flow diagram of the present invention, and it may further comprise the steps:
1) sleep clock 32.768KHZ is set, only keeps current location information under the dormant state;
2) judge whether voltage is low excessively, if cross the low dormancy that then continues;
3) send frequency lock instruction with frequency lock on the AIS dedicated frequency, and power amplifier carried out voltage bias make power amplifier work;
4) GPS positioning searching is located successfully back emission gps signal with receiving position and velocity information;
5) the Position And Velocity information package that the GPS module is received produces the AIS baseband data packet, sends through the AIS network.
As shown in Figure 8, the mode of operation of this fishing net tracker has following few component parts: some fishing net trackers, fishing boat onboard AIS terminal and other ship onboard AIS terminals.
The concrete course of work is following:
1, the fishing net tracker adopts the mode of operation identical with the AIS ship; The logging in network pattern of employing standard gets into AIS communication system; Send No. 18 messages that comprise No. 19 messages of title, length and width, position, speed and only comprise position, velocity information to other ships.
2, the fishing boat terminal receives the signal of tracker, parses its position and title, thereby prevents that non-with it ship fishing net from obscuring, and can know its definite distance and movement velocity, judges whether it drifts about.
3, passing ship resolves to a concrete ship with fishing net only, thereby realizes dodging.
Claims (7)
1. fishing net tracker based on the boats and ships automatic identification technology, it is characterized in that: it comprises digital baseband system, digital baseband system is connected with gps antenna, and is connected with the AIS antenna through high-frequency modulator, power amplifier; Battery is respectively digital baseband system, high-frequency modulator and power amplifier power supply through power management module.
2. the fishing net tracker based on the boats and ships automatic identification technology according to claim 1, it is characterized in that: described digital baseband system comprises: the GPS module that is used for receiving position and velocity information; Be used for position, speed Tracking device identification number and title packing are produced the microcontroller and the BBP of AIS baseband data packet; The said high-frequency modulator of described microprocessor controls generates required high-frequency carrier signal, controls BBP simultaneously and generates baseband signal, and baseband signal and carrier signal are launched via the AIS antenna after power amplifier mixes amplification; Microcontroller obtains position, speed, directional information from the GPS module.
3. the fishing net tracker based on the boats and ships automatic identification technology according to claim 2 is characterized in that: described BBP, GPS module, high-frequency modulator and power amplifier are controlled through triode by microprocessor respectively.
4. the fishing net tracker based on the boats and ships automatic identification technology according to claim 1 is characterized in that: described digital baseband system, high-frequency modulator, power amplifier, battery and power management module all are arranged in the can and are installed on the supporting floatation device of fishing net.
5. the fishing net tracker based on the boats and ships automatic identification technology according to claim 3, it is characterized in that: described microprocessor is selected low power processor STM32F103RBT6 for use.
6. based on the fishing net tracking of boats and ships automatic identification technology, it is characterized in that: it may further comprise the steps:
1) sleep clock is set, only keeps current location information under the dormant state;
2) judge whether voltage is low excessively, if cross the low dormancy that then continues;
3) send frequency lock instruction with frequency lock on the AIS dedicated frequency, and power amplifier carried out voltage bias make power amplifier work;
4) GPS positioning searching is located successfully back emission gps signal with receiving position and velocity information;
5) the Position And Velocity information package that the GPS module is received produces the AIS baseband data packet, sends through the AIS network.
7. the fishing net tracking based on the boats and ships automatic identification technology according to claim 6 is characterized in that: described sleep clock is 32.768KHZ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110412828.4A CN102540224B (en) | 2011-12-13 | 2011-12-13 | Fishing net tracker based on automatic ship identification technology and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110412828.4A CN102540224B (en) | 2011-12-13 | 2011-12-13 | Fishing net tracker based on automatic ship identification technology and method thereof |
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| CN102540224B CN102540224B (en) | 2014-07-02 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937711A (en) * | 2012-11-06 | 2013-02-20 | 启东市杨成电子有限公司 | Modified netsonde |
| CN104484826A (en) * | 2014-11-14 | 2015-04-01 | 中国水产科学研究院东海水产研究所 | Method for extracting trawl fishing effort temporal and spatial characteristics based on Beidou vessel monitoring system data |
| CN105716663A (en) * | 2016-04-11 | 2016-06-29 | 国家海洋局第二海洋研究所 | Long-term observing and biology trapping device for deep sea environment |
| CN106448224A (en) * | 2016-12-20 | 2017-02-22 | 朱广志 | Vehicle and ship location signal monitoring and managing system |
| CN108477045A (en) * | 2018-05-22 | 2018-09-04 | 闽江学院 | A kind of fishing net box position indicator and its security of fishery guard system |
| CN111401088A (en) * | 2019-09-12 | 2020-07-10 | 浙江海洋大学 | Device for marking and managing fishing boat operation netting gear and using method thereof |
| CN112784180A (en) * | 2021-02-03 | 2021-05-11 | 中国水产科学研究院东海水产研究所 | Method for extracting catching strength spatial information of tuna seine fishing boat |
| CN113863257A (en) * | 2021-10-27 | 2021-12-31 | 吴玉盏 | Fishing device for fishing net in ocean |
| WO2024071520A1 (en) * | 2022-09-27 | 2024-04-04 | 주식회사 비아이씨티 | Fishing net management system |
| CN118283145A (en) * | 2024-03-25 | 2024-07-02 | 亿海蓝（北京）数据技术股份公司 | Network potential instrument identification method and device, readable storage medium and AIS system |
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| CN201820362U (en) * | 2010-09-26 | 2011-05-04 | 成都天奥信息科技有限公司 | Navigation mark terminal based on automatic ship identification system |
| CN102201071A (en) * | 2011-07-05 | 2011-09-28 | 上海复旦天臣新技术有限公司 | Radio frequency identification tag chip suitable for various frequencies |
| CN202013667U (en) * | 2011-01-20 | 2011-10-19 | 福州闽邮吉星数码科技有限公司 | Ship automatic identification system terminal |
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Patent Citations (3)
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| CN201820362U (en) * | 2010-09-26 | 2011-05-04 | 成都天奥信息科技有限公司 | Navigation mark terminal based on automatic ship identification system |
| CN202013667U (en) * | 2011-01-20 | 2011-10-19 | 福州闽邮吉星数码科技有限公司 | Ship automatic identification system terminal |
| CN102201071A (en) * | 2011-07-05 | 2011-09-28 | 上海复旦天臣新技术有限公司 | Radio frequency identification tag chip suitable for various frequencies |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937711A (en) * | 2012-11-06 | 2013-02-20 | 启东市杨成电子有限公司 | Modified netsonde |
| CN104484826A (en) * | 2014-11-14 | 2015-04-01 | 中国水产科学研究院东海水产研究所 | Method for extracting trawl fishing effort temporal and spatial characteristics based on Beidou vessel monitoring system data |
| CN105716663A (en) * | 2016-04-11 | 2016-06-29 | 国家海洋局第二海洋研究所 | Long-term observing and biology trapping device for deep sea environment |
| CN106448224A (en) * | 2016-12-20 | 2017-02-22 | 朱广志 | Vehicle and ship location signal monitoring and managing system |
| CN108477045A (en) * | 2018-05-22 | 2018-09-04 | 闽江学院 | A kind of fishing net box position indicator and its security of fishery guard system |
| CN111401088A (en) * | 2019-09-12 | 2020-07-10 | 浙江海洋大学 | Device for marking and managing fishing boat operation netting gear and using method thereof |
| CN112784180A (en) * | 2021-02-03 | 2021-05-11 | 中国水产科学研究院东海水产研究所 | Method for extracting catching strength spatial information of tuna seine fishing boat |
| CN113863257A (en) * | 2021-10-27 | 2021-12-31 | 吴玉盏 | Fishing device for fishing net in ocean |
| WO2024071520A1 (en) * | 2022-09-27 | 2024-04-04 | 주식회사 비아이씨티 | Fishing net management system |
| CN118283145A (en) * | 2024-03-25 | 2024-07-02 | 亿海蓝（北京）数据技术股份公司 | Network potential instrument identification method and device, readable storage medium and AIS system |
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