First, the company profile
This article refers to the address: http://
Zheyun Technology is composed of professional software, electronics and network engineers. It is dedicated to the development and production 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, AVAYA, can provide comprehensive, efficient and advanced communication solutions for 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, we strive to provide customers with high-quality products and services, and constantly pursue customers, partners and The company's common development.
Second, the demand analysis and overall goal of system construction
2.1 Demand Analysis
With the development of science and technology and the improvement of people's living standards, the number of social vehicles is constantly rising, road congestion is becoming more and more serious, vehicles are becoming more and more difficult to park, and communities, institutions, enterprises and institutions, and social parking lots are full of problems. . In particular, in order to protect internal security, government agencies, enterprises, and high-end communities are more urgent in regulating the various types of vehicles entering and exiting. It is necessary to ensure the rapid entry and exit of vehicles in this unit, and at the same time, to take into account the management of external vehicles. These jobs are hard to do with manpower alone, and vehicles must be managed using modern technology.
The RFID intelligent vehicle management system is a high-tech product that meets the needs of this era. This can not only effectively solve the traffic chaos caused by chaos, but also promote the regularization of transportation facilities and regulate vehicle management.
2.2 Design Principles and Objectives
2.2.1 Design principles
a. Easy to use.
b. The system is sensitive and reliable.
c. The equipment is safe and durable.
d. Accurately distinguish between own vehicles and foreign vehicles.
e. Automated design, fast vehicle access, improved efficiency, and better service.
f. Save the expenses of management personnel and improve work efficiency and economic benefits.
2.2.2 System Design Objectives
a. The vehicle management system is scientific in design and has the characteristics of versatility and applicability.
b. When the owner's vehicle enters and exits, the owner's vehicle is automatically identified at a long distance (about 5 meters) and automatically released to ensure the convenience and speed of the owner's vehicle.
c. High security: With RFID technology, each vehicle is equipped with an RFID smart card that is unique and difficult to forge, ensuring maximum vehicle safety.
d. Vehicle protection function: The gate automatically rises and falls according to the traffic conditions of the vehicle, and has the function of anti-smashing, that is, as long as the vehicle entering and leaving the vehicle is still under the gate, the gate will keep its initial state and will not fall.
e. Adopt standard industrial control system structure, organize different system configurations according to different requirements of users, convenient and flexible.
f. Installation, commissioning and maintenance are simple and convenient, easy to replace and repair.
Third, the introduction of radio frequency identification system
3.1 Overview
RFID is the abbreviation of Radio Frequency Identification, which is radio frequency identification technology. RFID technology is a non-contact automatic identification technology. It automatically recognizes target objects and acquires relevant data through radio frequency signals. The identification work can work in various harsh environments without manual intervention.
RFID technology can recognize high-speed moving objects and recognize multiple labels at the same time, which is quick and easy to operate. RFID technology has significant advantages such as no 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 defense and military.
3.2 Basic Principles of RFID
RFID is an advanced and powerful technology 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 store a large amount of useful information related to materials and securely transmit it wirelessly. The RFID tag will be packaged on the surface of the item, which contains various information that will be stored in the chip at the center of the tag. The information contained in the tag can be read and updated within a controlled range by the card reader that works with it. RFID readers can be connected to the back-end software system in a variety of interfaces and ways 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 longer examples, and use flexible methods.
3.2.1 Electronic tag (Tag)
The chip of the electronic tag will store the unique identifier and related information of the represented item; from the appearance, the tag can have various packaging forms; from the perspective of the power supply mode, the tag is divided into active and passive. With the function of signal transmission and reception, the RFID tag in the monitoring range is read in real time, and the read information is transmitted to the software system in the background through the appropriate network.
3.2.2 RFID middleware
The "heart" of the RFID system is acquiring real-time information about the front-end tags and processing them 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 changed frequently. The main functions of middleware are reader management, data acquisition and system command communication, which are widely used in warehouse management and transportation management in the supply chain. Production management, material tracking, vehicle and shelf identification, shops, and especially in the supermarket.
3.3 How RFID works
The reader sends out a certain frequency of radio frequency signal through the antenna. When the tag enters the antenna radiation field, it generates an induced current to obtain energy, and sends out its own code and other information, which is read and decoded by the reader and sent to the host computer for related information. deal with.
3.4 Application of RFID system
RFID systems can be used to track and manage almost all physical objects, so they can be used in a wide range of industries. Typical applications include logistics, retail, transportation, vehicles, personnel, and assets.
Fourth, the solution
Most of the access channels of government agencies, enterprises, residential quarters, and other general parking lots are shared. Because parking spaces are relatively tight, it is necessary to implement permit management for fixed vehicles. The passports are referred to as "electronic license plates" and electronic license plates are remotely located. Non-contact, RFID tag construction, generally using metal electronic tags fixed on the edge of the front license plate of the vehicle, the tag is generally not removable; or the driver can hold the card out of the window. When the vehicle enters and exits without parking, 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 time limit is valid, the gate will be automatically lifted without manual operation. For vehicles that are temporarily in and out, they are managed by manually issuing temporary access cards.
V. 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 performs long-distance identification, collection and recording of data information of vehicles entering and leaving the vehicle, and immediately performs corresponding processing, automatically controls the lifting of the gates, realizes unrelated functions such as unattended, and ensures that the system has efficient vehicle release and management capabilities. Using RFID technology, the vehicle has a fast recognition speed and high accuracy, and has related capabilities such as charge management and security.
5.2 system composition
RFID reader, RFID antenna, camera, vehicle detector, ground coil, gate, PC (software)
5.3 system function
Automatic control: When a vehicle with legal status passes through the gate, the system automatically controls the lifting of the gate
Manual control: for temporary vehicle management, time statistics, billing, manual operation by management personnel
Open control: for special occasions, full open mode can be realized, and the system saves the traffic records of all vehicles.
Charge Management: A management fee expiration reminder function for long-term legal vehicles
Security identification: each time the traffic record can be compared with the image, preventing the deck from losing the vehicle
Passage records: All transit records include time, photos, etc., retrieved, queried, and printed in a variety of ways.
Road safety: with barrier function
5.4 System Features
UHF RFID reader with a reading distance of 5 to 10 meters
Vehicle identification is efficient, accurate and precise
Vehicle detector sensitivity is high
high degree of automation
Can effectively improve the quality of management services
5.5 technical parameters
RFID reader vehicle detector
Working frequency range 902 ~ 928MHz Operating frequency 50 ~ 250kHz
Meets the standard ISO18000-6B sensitivity software level 10 adjustment
Reading distance 0~10m Relay 250V AC/3A
Antenna interface SMA reaction time <100mS
Communication interface RS232, 10/100M Ethernet communication interface RS232, 10/100M Etherne
RF power 1W coil inductance 40---200uH
Working voltage DC9V working voltage DC9V
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