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1. Company profile
Zheyun Technology is composed of professional software, electronics and network engineers. It is committed to the development, production and development of RFID applications, intelligent vehicle management systems, intelligent bus priority control, intelligent measurement management, power environment, security, IT system resource monitoring and other related products. Sales, at the same time, as a partner of NORTEL and AVAYA, we can provide complete, efficient and advanced communication solutions for the majority of enterprises and institutions.
The company provides personalized professional solutions and comprehensive technical support, and strives to develop deep and lasting customer relationships; through continuous innovation, efficient operation and fine management, it strives to provide customers with high-quality products and services, and constantly pursues customers, partners and The common development of the company.
2. Demand analysis and overall goal of system construction
2.1 Demand analysis
With the development of science and technology and the increasing improvement of people’s living standards, the number of social vehicles is constantly increasing, road congestion is getting more and more serious, vehicle parking is becoming more and more difficult, communities, government agencies, enterprises, institutions, and social parking lots are full of vehicles. . In particular, in order to ensure internal safety, various government agencies, enterprises and institutions, and high-end communities have become more urgent to regulate all types of vehicles entering and exiting. It is necessary to ensure the rapid entry and exit of vehicles of their own units, while also taking into account the management of foreign vehicles. These tasks are difficult to do by manpower alone, and modern technology must be used to manage vehicles.
The RFID intelligent vehicle management system is a high-tech product that meets the needs of this era. It can not only effectively solve the traffic chaos caused by random parking, but also promote the formal construction of transportation facilities and standardize vehicle management.
2.2 Design principles and goals
2.2.1 Design principles
a. Convenient and quick to use.
b. The system is sensitive and reliable.
c. The equipment is safe and durable.
d. Can accurately distinguish self-owned vehicles from foreign vehicles.
e. Automated design, fast vehicle entry and exit, improve efficiency and provide better service.
f. Save management personnel’s expenses, improve work efficiency and economic benefits.
2.2.2 System design goals
a. The design of the vehicle management system is scientific, with the characteristics of versatility and applicability.
b. When the owner’s vehicle enters and exits, the owner’s vehicle will be automatically identified at a long distance (about 5 meters) and automatically released to ensure that the owner’s vehicle enters and exits the site conveniently and quickly.
c. High security: Adopting RFID technology, the RFID smart card equipped with each vehicle is unique and difficult to forge, which guarantees the safety of the vehicle to the greatest extent.
d. Vehicle protection function: The barrier automatically raises and lowers according to the traffic conditions of the vehicle, and has the function of anti-smashing, that is, as long as the vehicles entering and exiting the field are still under the barrier, the barrier will maintain its initial state and will not fall.
e. Adopt the standard industrial control system structure, organize the configuration of different systems according to the different requirements of users, which is convenient and flexible.
f. Installation, debugging, and maintenance are simple and convenient, easy to replace and repair.
3. Introduction to Radio Frequency Identification System
3.1 Overview
RFID is the abbreviation of Radio Frequency Identification, that is, radio frequency identification technology. RFID technology is a non-contact automatic identification technology, which automatically recognizes the target object and obtains related data through radio frequency signals. The identification work does not require manual intervention and can work in various harsh environments.
RFID technology can identify high-speed moving objects and can identify multiple tags at the same time, and the operation is quick and convenient. RFID technology has significant advantages such as non-contact, high precision, anti-interference, fast speed, and strong adaptability to the environment. It can be widely used in production management, logistics management, transportation, medical and health, commodity anti-counterfeiting, asset management, and national defense and military fields.
3.2 The basic composition principle of RFID
RFID is an advanced and powerful technology. It is based on radio frequency technology and can be used as a means of identifying materials. In addition to storing a unique identification number, RFID can also store a large amount of useful information related to materials and transmit it securely through wireless. The RFID tag will be encapsulated on the surface of the material, which contains various information will be stored in the chip in the center of the tag. The information contained in the label can be read and updated within the controllable range by the card reader working with it. The RFID card reader can have multiple interfaces and methods to connect with the back-end software system for more complex logic processing. RFID technology is different from the current common bar code technology. RFID tags can carry a larger amount of information, can communicate with longer examples, and are flexible in usage.
3.2.1 Electronic Tag (Tag)
The chip of the electronic tag will store the unique identification and related information of the represented item; from the appearance, the tag can have various packaging forms; from the power supply mode, the tag is divided into two types: active and passive. It has the function of signal sending and receiving, real-time reading of RFID tags within the monitoring range, and passing the read information to the back-end software system through an appropriate network.
3.2.2 RFID middleware
The “heart” of the RFID system is acquiring various real-time information about front-end tags and processing it in real time according to customer needs. Because RFID tags are readable and writable, they are especially suitable for occasions where data content needs to be frequently changed. The main function of middleware is reader management, data collection and system command transmission. It is widely used in warehouse management, transportation management, and transportation management in the supply chain. Production management, material tracking, identification of vehicles and shelves, and anti-theft of commodities in stores, especially supermarkets.
3.3 The working principle of RFID
The reader sends a radio frequency signal of a certain frequency through the antenna. When the tag enters the antenna radiation field, it generates an induced current to obtain energy, sends out its own coding and other information, which is read and decoded by the reader and sent to the host computer for relevant deal with.
3.4 Application of RFID system
Radio frequency identification system can be used to track and manage almost all physical objects, so it can be widely used in all walks of life, typical applications include: logistics, retail, transportation, vehicles, personnel, assets and other fields.
Four, the solution
Government agencies, enterprises, institutions, residential communities and other general parking spaces have access to the most common parking spaces. Due to the tight parking spaces, it is necessary to implement pass management for fixed vehicles. The pass is referred to as “electronic license plate”. It is composed of non-contact and RFID tags. Metal electronic tags are generally used to fix the edge of the front license plate of the vehicle. The tags are generally not removable; or the driver can hold the card out of the window. When the vehicle enters and exits without stopping, the system will automatically read the electronic license plate, take the image of the vehicle license plate, and determine the validity period of the passage. If the period is valid, the barrier will be automatically lifted without manual operation. For vehicles that enter and exit temporarily, they are managed by manually issuing temporary pass cards.
Five, vehicle management system
5.1 System Introduction
Zheyun RFID intelligent vehicle management system adopts advanced technologies such as RFID, image processing, and automatic control, which can effectively solve vehicle management problems. The system remotely recognizes, collects, and records the data information of incoming and outgoing vehicles, and performs corresponding processing in real time, automatically controls the lifting of barriers, realizes unattended and other related system functions, and ensures that the system has efficient vehicle release and management capabilities. Using RFID technology, the vehicle identification speed is fast, the accuracy rate is high, and it has related capabilities such as toll management and security protection.
5.2 System composition
RFID reader, RFID antenna, camera, vehicle detector, ground induction coil, barrier, PC (software)
5.3 System function
Automatic control: when a vehicle with a legal identity passes through the barrier, the system automatically controls the lifting of the barrier
Manual control: for temporary vehicle management, time statistics and billing are performed manually by the manager
Open control: On special occasions, a fully open mode can be realized, and the system saves the traffic records of all vehicles
Toll management: for long-term legal vehicles, it has the function of reminding the expiration of management fees
Safety recognition: each pass record can be compared with images to prevent vehicle loss caused by decks and other phenomena
Pass records: All pass records include time, photos and other information, which can be retrieved, inquired, and printed in a variety of ways
Barrier security: with barrier anti-smashing function
5.4 System characteristics
UHF RFID reader, with a reading distance of 5-10 meters
Vehicle recognition is efficient, accurate, and precise control
High sensitivity of vehicle detector
high degree of automation
Can effectively improve the quality of management services
5.5 Technical parameters
RFID reader/writer vehicle detector
Working frequency band 902～928MHz Working frequency 50～250kHz
Comply with standard ISO18000-6B sensitivity software 10-level adjustment
Reading distance 0～10m Relay 250V AC/3A
Antenna interface SMA response time <100mS
Communication interface RS232, 10/100M Ethernet Communication interface RS232, 10/100M Ethernet
RF power 1W coil inductance 40—200uH
Working voltage DC9V Working voltage DC9V
Zheyun Technology Co., Ltd.
www.zheyuntech.com
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