Intelligent transportation port terminal fishing vessel identification and supervision solution
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I. Overview
In recent years, as land transportation has gradually shown a bottleneck in logistics volume, improving water transportation efficiency, and improving the supervision environment for shipping and fishing vessels have gradually become the development strategies of coastal cities. In the traditional “golden waterways” of the Yangtze River Delta and areas along the canals, major cities are formulating ambitious plans for “Strong Water Transport City” and “Digital Port and Shipping” projects to give full play to their shipping advantages, reduce logistics and transportation costs, and increase The comprehensive competitiveness of the economy and society will help further support the rapid development of economic construction.
In the actual business environment, information technology has been widely and far-reaching applications. Each inland port and shipping city has invested a lot of manpower and material resources to accelerate the pace of information network construction and technology investment. For example, the establishment and improvement of the ship center database of the entire shipping area, and the realization of annual ship review, entry and exit visas, and collection of fees based on the port and shipping management business , On-site supervision, comprehensive utilization of information and other business information, network dynamic management. These system applications that rely on advanced information technology have realized non-stop navigation inspections, broke the traditional model of “territorial management”, and laid a solid foundation for building a “digital port and shipping”. However, the on-site supervision modules of these systems are still used The collection method of manual entry of ship name and ship number. If the ship’s name and ship number are covered, the ship cannot be seen clearly at night, the flow of ships is too large, and the operator is sleepy, this may cause the ship’s name and ship number to be unable to realize automatic identification, which becomes the biggest bottleneck in creating a “digital port and shipping”. So, is there an economical and practical way to solve the automatic identification of ship numbers? Yes, this is a new technology that has matured in recent years, namely radio frequency identification technology (RFID).
RFID is an automatic identification technology that originated in the 1950s. It uses radio frequency for non-contact communication to exchange data for identification purposes. A typical RFID application system usually consists of an electronic tag that identifies a specific target object, a reader that receives the electronic tag signal, and application software. Compared with traditional magnetic cards and contact IC cards, RFID technology does not require human intervention when completing the identification work. It is suitable for automatic operation of the system and is not easily damaged. It can identify high-speed moving objects and can identify multiple radio frequency cards at the same time, which is fast and convenient. . Electronic tags can adopt a special packaging method to effectively resist corrosion and invasion of harsh environments such as oil stains and dust pollution.
Radio frequency identification systems can be divided into active and passive according to the power supply mode of electronic tags. The working energy required by the passive tag needs to be obtained from the radio frequency beam emitted by the reader, and provided after rectification and storage. The cost is relatively low, but the radio frequency power is relatively large. The active tag itself has a miniature battery. Because it does not require radio frequency power supply, its identification distance is longer, the reader needs less power, and it has the advantages of stable reading and writing, good anti-collision performance, and large amount of information carried. Both are critical performance requirements in ship identification applications.
2. System introduction
Schematic diagram of application in inland waterway ship identification
As shown in the figure above, active electronic tags are installed on ships entering and leaving the port area (to prevent embezzlement, special measures can be taken for installation methods to achieve anti-disassembly requirements), and individual information or freight information related to the ship can be stored in the tags. A long-distance reader is installed on the channel, and it is connected to the background through a standard serial port RS232/485 interface. In areas where wiring is not easy, it can also be connected to a wireless data transmission module (GPRS/CDMA) to maintain real-time communication with the background application system. At this time, when the ship with the electronic tag passes through the channel, it will be recognized and read by the reader within a range of up to 1000 meters.
The computer in the harbor supervision management boat is kept online with the central database through the wireless Internet access system, and the on-site supervisory personnel can carry out the non-stop inspection of the heavy-loaded ships at any time through the displayed results. If combined with a camera monitoring system, image identification of ships and remote viewing of on-site conditions can be carried out. If it is a problematic ship with an incomplete license or an expired license, the harbor supervision management boat can quickly get out of the boat for inspection. Of course, the port supervision and management boat can also use a portable mobile reader to achieve the audit management goals for all related ships.
Three, system function
The automatic monitoring system for ship identification and port entry and exit based on active RFID technology can achieve the following functions:
Automatically record the entry and exit of ships: The system does not require manual operation by ship staff and can automatically feed back identity information to the monitoring center. The competent department of ships can clearly grasp the status of each ship entering and leaving the port through the management (monitoring) center. In addition, it can also watch the real-time entry and exit status through the video surveillance installed in the port, and record video images for subsequent inquiries .
Prevent ships from leaving the port with illness: When a sick ship leaves the port, the system can automatically remind the competent authority to take effective measures to prevent it from going out.
When the ship leaves the port, the system automatically reminds the ship to turn on the AIS system and the satellite position monitoring system through the communication link, and at the same time sends various important information to the departing ship, including departure greetings, ship safety reminders for navigation, various notices and announcements from the competent authority, etc. . When it is found that the ship has not turned on the corresponding AIS system or satellite monitoring system, the system will automatically remind the competent authority to take measures.
When the ship enters the port, the system can automatically send various information such as the return greeting to the ship via the communication link, the notification announcement of the competent authority, and so on.
Non-stop ship inspection and problem ship management. Through long-distance radio frequency data transmission, law enforcement ships of the competent authority can implement non-stop inspections of sailing ships. During the inspection process, because the law enforcement ship’s system can query the central database for ship information in real time, ships with problems such as illegal ships, expired annual inspections, expired certificates, etc. will have nowhere to hide and effectively prevent blacklisted ships from going to sea.
Anchorage statistics: Count the number of ships in each anchorage to effectively manage the anchorage of ships.
Traffic statistics: can accurately count the traffic of passing ships.
Fourth, the program features
1. Large flow: extremely high anti-collision, adopting a variety of anti-collision schemes, which can support more than 200 tags to be read at the same time;
2. It supports high-speed mobile reading, and the moving speed of the identification card can reach more than 200 km/h.
3. High reliability, working temperature -40℃~85℃, waterproof and shockproof, meeting the application of industrial-grade environment.
4. High anti-interference: There are no special requirements for various interference sources on site, and the installation is convenient and simple.
5. There is no need to apply and pay for the ISM microwave frequency band that is open worldwide.
6. Ultra-low power consumption: It is safe for the human body and has no health damage.
7. Ship passing records. Every time a ship passes a monitoring point, it will be automatically 100% recorded in the central database.
8. Non-stop ship inspection. The port supervision management boat can realize non-stop inspection of sailing ships, which greatly facilitates supervision work.
9. Management of gate fees. For ship locks that charge gate fees based on voyages, using the identification system combined with the charging system can realize non-stop ship charges for credited ship owners, effectively increasing the lock passing rate and reducing the chance of blocked voyages.
10. Toll management of the “Four Self” channel. The installation of the identification system at the entrance of the “Four Self” Channel can effectively record the ships entering the “Four Self” Channel, and combined with the ship’s credit account, it can realize fee deduction and payment.
11. Anti-counterfeiting of ship certificates. In order to evade punishment and payment of fees, falsification of ship certificate data, ship name and ship number is rampant. After adopting RFID technology, due to the global uniqueness of the electronic tag ID number and the anti-disassembly measures of the electronic tag, such problems can be completely eliminated.
12. Management of problematic ships. Since the identification control computer queries the central database for ship information in real time, there will be no way for the ship to hide from problems such as illegal ships, expired annual inspections, and expired certificates.
13. Traffic and transportation volume statistics. It can accurately and automatically count the traffic and freight volume of passing ships.
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