chrispeng [ad_1]
1. System background and implementation significance
Because of its own irreplaceable advantages and characteristics (good privacy, low transportation cost, and strong environmental adaptability), container transportation has extremely broad prospects for development. my country’s railways have always regarded container transportation as the focus of their work for key development and vigorous development. However, there are still many problems in the operation of railway container transportation: (1) The work method is backward and the work efficiency is low. In the entire transportation process, all container numbers are manually copied and registered. The workload is large, the error rate is high, and the information is not transmitted in time; (2) The operation process is not refined and there are many repetitive tasks. According to statistics, in the entire process of each container from entering the station to leaving the station, it is necessary to manually copy and log the container number up to 7 times. These have greatly affected the efficiency of railway container transportation, so it is extremely urgent to use advanced technology to effectively track and manage containers.
In this regard, Wuhan Mulanda Technology Co., Ltd. has launched a solution of “RFID Railway Transport Container Management System” based on a 2.4G long-distance sensing radio frequency card, which combines advanced RFID technology with electronic seal technology. The so-called electronic seal technology refers to an authentication technology that can record whether the carriage or other hard packaging has been secretly opened, and can automatically call the police when it is opened illegally. The electronic seal can realize the automatic identification of the container, record the container switch status information in the cargo transportation into the electronic label, and become the carrier of the cargo transportation information. The verification target that is turned on. Once the electronic seal is damaged, it will be reflected to the computer monitoring system. Active seals, combined with GPS technology, can transmit real-time information about the time, location and surrounding environment of the state change to the machine of the owner or manager when the state of the container changes. There are also some active electronic seals that can provide instant distress signals when damage occurs. In the long run, active electronic seals improve the safety and transparency of container transportation, and will greatly reduce overall transportation costs. And with the maturity of technology and the reduction of cost, active electronic seal technology is increasingly being adopted in the wider field of cargo transportation security. Through the computer management system, electronic seals can implement strict supervision on registration, issuance, inspection, unsealing, reuse, and cancellation, which fundamentally solves traditional anti-counterfeiting equipment such as lead seals, plastic seals, metal seals, lock seals, and paste Seals are easy to be copied, illegally replaced, difficult to distinguish between authenticity and counterfeit, and difficult to manage. Combined with various other technical means, electronic seal locks can realize advanced applications for verifying the integrity of transported goods in multiple fields.
The application of RFID in the entire transportation process can realize the monitoring of the whole process of railway container transportation and ensure the efficiency and safety of railway container transportation. The reduction of work intensity, the improvement of work efficiency and more effective tracking management bring huge economic and social benefits.
2. System composition, working principle and program introduction
1. System composition:
(1) ML-T250 long-distance reading and writing electronic door seal
The electronic door seal recorded with the container number, truck number and other attribute data is installed at the opening and closing door of the carriage. The method of use is not much different from traditional locks, except that a remote reader is required to seal before shipment.
(2) GPRS reader
Install a communication box that integrates RFID and GPRS communication modules on the inner side of the car door (near the door) (GPS positioning module can be added if necessary), which is used to maintain communication with the electronic door seal and send the status information of the electronic door seal to the background in real time monitoring Center. Both the electronic door seal and the communication box use anti-violent disassembly alarm technology: once these two devices are disassembled by external violence, they will actively send an alarm message to the monitoring center.
(3) Antenna
In order to ensure the reading of container tag data, an RFID reader antenna must be installed on the top of the carriage close to the reader to read the RFID tag information installed on the electronic door seal of the carriage.
2. Working principle diagram:
3. Program introduction:
At the origin, the shipper, after loading the transported goods, uses an electronic door to seal the upper container door (press the latch), and uses a fixed or hand-held reader to send a series of encrypted instructions to seal it. After the sealing is successful, the electronic door seal label will actively feedback a signal, indicating that the electronic door seal has been successfully sealed. During the transportation of goods, the electronic door seal continuously sends status signals to the communication box, and the communication box sends the information to the background monitoring center through the built-in GPRS module. If the status changes midway, the owner or transporter can receive the alarm information as soon as possible and quickly take corresponding measures. At this time, the background monitoring center will fully understand the batch, quantity, driver and escort of the batch of goods, and unlock Time, etc., if the communication box is loaded with a GPS module, you can also know the location of unlocking, which is of great significance for it to take corresponding safety measures. After the goods arrive at the destination, the consignee unlocks the lock according to the received unlocking instruction (the unlocking instruction is sent by the monitoring center or generated and used in each terminal according to a public key system)
3. System functions, features and advantages
1. System function:
Tracking: According to the information of the electronic door seal installed on the container, the logistics can be tracked and managed.
Query: The container can be inquired at any time (such as the time of entry and exit, vehicle number, container number and other related data information, etc.).
Modify: The basic information of the container corresponding to the label number can be modified.
Delete: delete the container information for which the transportation task has been completed. 2. System features:
2.1 The particularity of the application of RFID technology in container transportation:
(1) The electronic tags flow with the container, and the working environment is relatively harsh: high temperature, high humidity, acid and alkali corrosion, large vibration, etc.;
(2) Containers move faster, requiring the ability to recognize high-speed moving objects;
(3) The container number is the unique identifier of the container and the only identifier of the container transportation management object. It requires accurate and error-free identification of the container number.
2.2 System characteristics:
Long distance: The effective recognition distance is 2～50m, the recognition distance is adjustable.
Anti-collision: Advanced anti-collision technology can identify more than 50 signs per second at the same time.
High speed: The maximum recognition speed can reach 200 km/h.
Security: The built-in GPRS wireless communication module can understand the status of cargo transportation in real time, and learn about abnormal conditions at the first time; encryption algorithms and authentication ensure data security and prevent link eavesdropping and data cracking.
Directionality: Within the effective recognition range of the reader, the placement direction of the electronic lock has no effect on the recognition rate.
High reliability: -40℃-85℃, anti-shock.
Cost: All 0.18uM chips are used, so the cost is lower.
Power consumption: ultra-low power consumption, healthier and safer.
Transmission: The ISM microwave frequency band is open worldwide, no application and payment are required.
High anti-interference: no special requirements for various interference sources on site
3. System advantages:
(1) RFID has strong environmental adaptability, strong anti-interference ability, and can be used all-weather, almost free from pollution and humidity.
(2) Fast recognition speed and high recognition accuracy
(3) RFID has the characteristics of large information capacity, high confidentiality, strong durability, high reliability, and multi-target recognition.
These characteristics of RFID make it the best choice for automatic container identification technology.
Four, system hardware equipment introduction
1. ML-T250 long-distance reading and writing electronic door seal
ML-T250 electronic door seal provides a new development method for the development of automatic identification system. This product is specially developed and designed for the container management of logistics transportation. ML-T250’s leading reading and writing technology, full industrial design and outstanding features give it a comprehensive competitive advantage in the fields of vehicles, logistics, equipment and personnel tracking and identification, and create new value advantages for customers.
technical parameter
1.1. Electrical characteristics
Quiescent current is less than 2μA
Working current is less than 15mA
Battery life 3-5 years (lifetime 20 years)
1.2. Microwave link characteristics
Signal modulation method GFSK
Communication rate two-way 1024Kbit/s
Working frequency 2.45GHz
Maximum output power 0dbm
Bit error rate 10-9
1.3. Physical characteristics
Shell material high temperature modified ABS plastic
Tag type read-write type
Appearance mm
Weight 50 grams
Multiple colors
Protection grade IP34 waterproof
The installation method is packaged on the container
1.4. Working environment
No special requirements for various interference sources on site
Working temperature: -30℃ ～ +65℃
Working humidity: less than 85%
Storage temperature: -40℃ ～ +80℃
Vibration: 10～2000Hz, 15g three axes
Anti-electromagnetic interference: 10V/m 0.1～1000MHz AM electromagnetic wave
2. ML-M3500GPRS Reader
The ML-M3500 reader/writer integrates a GPRS module, and the data can be sent out via GPRS after processing, which comprehensively enhances the development space of the reader. The superior anti-interference and lightning protection design of the ML-M3500 reader can be used in both general living environments and industrial environments with a safe structure. It can easily “read and write” a variety of electronic tags. , Fully meet the general needs of customers for RFID products. The shell is made of aluminum, the color is generally black (adjustable), the weight of the card reader is 0.5 kg, and the size is 155*148*35mm. The installation method uses the card reader to be fixed on the benchmark. There is no need to open the shell, and the distance can be adjusted directly by sending commands.
The reader is powered by 9-12V DC, with stable performance, reliable work, strong signal transmission ability, and a service life of up to 15 years, which can meet the harsh industrial environment.
technical parameter
2.1. Working environment
1) Anti-interference and lightning protection design to meet industrial environment requirements
2) Operating temperature: -40℃～+80℃
3) Storage temperature: -60℃～+80℃
4) Anti-electromagnetic interference: 10V/m 0.1-1000MHz AM electromagnetic wave
2.2. Main technical parameters
1) Electrical characteristics
Specifications
Power supply +9V to +12V DC (MAX 500mA)
Communication interface GPRS
Reliability MTBF≥70000 hours
Working life of 15 years
2) Microwave link characteristics
Specifications
Signal modulation method GFSK
Operating frequency 2.4-2.45 GHz
Transmit power ≤3dBm (adjustable by software)
Antenna polarization vertical
Omnidirectional range of read and write area
Microwave communication distance≤80m
Microwave communication error detection CRC16 cyclic redundancy check
Communication Encryption Interview
Bit error rate/BER 10-7
3) Main performance parameters
ML-M3500 reader is dedicated to RFID identification and programming
Using DC9V～12V/500mA power supply can identify 200 cards at the same time;
The farthest recognition distance is 80m (the normal distance is 0-50 meters, and the distance between 50-80 meters needs to be equipped with an antenna), and the recognition distance is adjustable;
Recognition direction is omnidirectional/directional (selected by the user)
It can identify electronic tags that move quickly within 200 km/h;
The working frequency is in the 2.4GHz-2.5GHz ISM microwave range;
The data rate is 1Mbps, the RF power is -20dBm～0dBm and is adjustable, and the maximum peak power is 1 milliwatt;
The acceptance sensitivity in the working environment of -40℃-85℃ is -90dBm;
The development interface is connected with other equipment in GPRS mode;
Adjust the receiving distance of the reader by sending commands through the serial port. The asynchronous communication rate is 9600BPS-38400BPS.
4) Product features
Support GPRS mode to communicate with the host computer;
Encrypted calculation and authentication to ensure data security and prevent link eavesdropping and data cracking;
Using channel isolation technology, multiple devices do not interfere with each other;
Advanced anti-collision technology, support multi-tag reading and writing;
Configurable microwave module working mode, adjustable transmission power;
Compatible with the card provided by the customer.
Five, system software function introduction
(The software interface is for reference only, the software related performance can be added, changed or deleted according to the customer’s wishes)
1. Simple and convenient operation
Wireless monitoring integrated structure design, convenient and quick installation
The software has a full Chinese menu with a good operation interface
The centralized management of all-electronic data in the system enables the search for large amounts of data to be completed by the server, which greatly improves the speed of response to events.
The active identification card has a built-in replaceable lithium battery, which has a long life, ultra-low power consumption, no external power supply, no charging.
2. Rich query and report functions
Query and report output, printing functions are simple and easy to operate
Can query various food related information
You can also track and observe a specific container
Various information reports can be output as required (such as: departure time of container transportation, when, where, and status, arrival time at destination, etc.)
6. After-sales service and technical support
1. During the warranty period (within 1 year)
During the warranty period, if there is a problem with the device, it can be replaced. If there is a problem with the system, you can provide technical services over the phone. If you need on-site service, it will be implemented in accordance with the contract.
2. After the shelf life
The equipment will be repaired free of charge for life, but the cost of the device and the transportation cost shall be charged. If the on-site service is required, the buyer shall bear the corresponding accommodation and travel expenses.
3. Personnel training services
After the system project is installed, our company’s technical staff will train the technical staff responsible for system maintenance on site, usually (1-3 days). This is conducive to the later maintenance and normal use of the system.
Seven, copyright statement
The copyright of this technical solution belongs to Wuhan Mulanda Technology Co., Ltd. Without written permission, no institution or individual may quote it in any form, otherwise Wuhan Mulanda Technology Co., Ltd. reserves the right to pursue legal liabilities. Hope to cooperate sincerely!
[ad_2]
