chrispeng [ad_1]
1. The basis of the scheme design
1) “Interim Provisions on the Design and Management of Intelligent Building Systems Engineering” Ministry of Construction 1997
2) “Code for Electrical Design of Civil Buildings” (JGJ/T16-92) Ministry of Construction
3) “Intelligent Building Design Standard” (DBJ08－4－95) Shanghai Construction Committee 1996
4) “Code for Design of Integrated Wiring Engineering for Buildings and Building Groups” China Engineering Construction Standards Association 1997
5) “Code for Construction and Acceptance of Integrated Wiring Projects for Buildings and Building Groups” China Engineering Construction Standards Association 1997
6) “Building Communication Integrated Wiring System” (UD/T926) Ministry of Posts and Telecommunications 1997
7) “Code for Design of Automatic Fire Alarm System” State Planning Commission 1988
2. General Principles of System Design Scheme
System function overview
1) Admission control function
Identity recognition: When the vehicle enters the range of the long-distance reader card reader, the reader automatically recognizes the relevant information of the vehicle and transmits the relevant information to the background terminal. After comparing with the legal vehicle, the barrier will be automatically opened, and the unauthorized card will not enter the venue and alarm Notify the security and prepare to deal with relevant incidents in a timely manner;
Information record: When reading the card, it will automatically record the time of entry, the place of entry, vehicle information, the identity of the owner, etc.;
Image capture: capture the image of the entering vehicle synchronously with the gate opening instruction and store it in the database for vehicle verification when leaving the venue and later reference;
2) Exit control function
Automatic identification: The vehicle enters the range of the long-distance reader card reader, the reader automatically reads the relevant information in the tag card on the car and transmits the information to the background terminal. After the comparison, the legal vehicle automatically opens the barriers. Be on the scene and call the police to warn the security to pay attention to interrogation, so as to avoid losing the car;
Image comparison: Take the image of the exiting vehicle and store it, and at the same time automatically call up the comparison display of the entry image of the vehicle to perform accurate comparison confirmation, enhance the anti-theft function, and make the post-audit more accurate and easier;
License plate recognition: automatically extract the license plate number of the exiting vehicle, store it as a unique identification mark of the vehicle, and automatically compare it with the license plate number recorded when entering the venue, so as to automatically and quickly confirm whether the entry and exit are the same car, and Can be viewed later;
3) Central control and management functions
IC and ID card management: realize the authorized issuance of IC and ID cards, data modification, loss reporting/unreporting, card return, emptying and recycling, etc. The maximum number of lost reporting cards that the system can handle is 10,000 (that is, the number of blacklists is 1 Ten thousand);
Universal query function: It can query related data such as vehicle usage, card usage, and vehicle entry and exit through one condition or a combination of one and multiple conditions, and can generate detailed reports in accordance with the requirements of managers;
Equipment monitoring and management: control the opening, closing and stopping of the barrier, real-time detection of the working status of the barrier, real-time detection of the working status of the vehicle detector and whether there is a vehicle on the induction coil;
System settings: With a simple mouse click, you can easily configure the system settings, such as with/without image comparison system, data retention time, and other related content;
Design goals and principles
1) Goal
Safety function of vehicle storage;
Economical and reasonable operating costs;
Convenient and fast way of passing, better service to owners;
Improve the grade of the community;
2) Principle
Advanced and mature technology and equipment ensure the safe, reliable and stable operation of the system;
A complete management system can prevent the loss of vehicles to the greatest extent and provide better convenience for owners;
Reasonable layout, improve the service quality of the system, shorten the service time, and increase the efficiency of vehicle traffic;
Principles of practicability, real-time and completeness;
Principles of scalability and ease of maintenance;
3) Management system
The general idea of the management system is that the scene is unattended and fully intelligent. Managers can exercise complete control over the parking lot at any fixed location outside the parking lot environment, complete various statistics, monitoring, alarms, guidance and other functions, which greatly reduces management. The amount of labor of the personnel, and can provide a brand-new modern atmosphere for the owner.
3. System composition and design
1) System topology
The intelligent parking lot management system can adopt various network topologies. The server and the management workstation are connected in the form of a local area network (LAN), and the computer is connected to the lower computer by RS485 bus; it is simple, quick to put into use, and the system is stable. The highest rate of return on investment. The block diagram of its topology is as follows:
2) Network topology diagram
For the entrance and exit control system, the server is responsible for the important task of the entire system. The rapid access of data is a problem worthy of concern, but the safety of the data cannot be ignored. Once the hard disk fails or the data is lost or damaged due to improper operation, it will The entire system enterprise will have a huge impact on the system. It can be seen that the value of the data stored by the server far exceeds the value of the machine itself, and the SQL server selection cannot be ignored. The vehicle management system with the entrances and exits together only needs a computer to manage it. If the entrances and exits are separated and there are many temporary vehicles, it is best to place a computer at each entrance and have a security guard on duty. In order to deal with emergencies.
The first level network is distributed by RS485 bus system, which mainly provides communication for each entrance and exit control machine, and the card reading data is taken; the second level network is LAN Ethernet star connection, computer and computer communication and data storage, SQL server is responsible for Data query and processing, distribution of network resources, and classification review of the authority of each workstation.
3) System workflow
Schematic diagram of approach
instruction:
Legal vehicle card holder
When the vehicle presses the ground-sensing coil, the reader will automatically sense the tag card on the vehicle and compare it with the vehicle information and photos stored in the computer, and automatically open the barriers after verification; the computer in the duty room automatically checks and records the time of entry and exit of the vehicle, and Display the license plate;
The driver drove into the community, and when the vehicle hits the ground, the barriers are automatically closed;
Temporary Parker
The external vehicle is pressed to the ground, the card reader is working but no legal vehicle card is detected, the alarm will give an alarm, and the duty officer can take measures to show the specific situation, and can manually control the barrier or issue a temporary vehicle card for incident processing;
The driver drove into the community and pressed the geo-sensing barrier to close it manually or automatically;
Schematic diagram of appearance
instruction:
Legal vehicle card holder
When the vehicle presses the ground-sensing coil, the reader will automatically sense the tag card on the vehicle and compare it with the vehicle information and photos stored in the computer, and automatically open the barriers after verification; the computer in the duty room automatically checks and records the time of entry and exit of the vehicle, and Display the license plate;
The driver drove out of the community. After leaving the field, the vehicle fell into the ground and the barriers were automatically closed;
Temporary Parker
Give the card to the attendant on duty;
The barriers are opened and the vehicles leave the field
4) One-in-one-out parking system diagram
Four, RS485 communication card
1) Introduction to the main equipment of the system
Main structural features:
1. The appearance is shown in the figure;
2. When installed, it looks like a PCI card, but does not need to be inserted into the slot; (485 communication card)
3. Equipped with a power cord;
The main technical parameters:
1. Provide RS-485 communication interface;
2. The device exchanges data with the computer through the 485 communication card, working in half-duplex
3. Power required: DC 12V;
4. Maximum communication distance: 1.2Km;
2) Chinese display
Main structural features:
1. The appearance is shown in the figure;
2. Highlight LED dot matrix; (Chinese display screen)
3. The circuit includes a microcontroller, drive display scan, communication interface, real-time clock, font library, etc.
The main technical parameters:
1. The font library includes all national standard Chinese characters and can display traditional Chinese characters;
2. The communication with the main control board of the parking lot adopts optocoupler mode;
3. Power supply: AC 9V/20W;
4. With RS-485 expansion interface;
5. It can display 5 Chinese characters at a time, and display in scroll mode;
6. Ambient temperature: -25℃– +50℃;
7. Relative humidity: less than 95%;
3) PLC controller
Main structural features: 
1. The appearance is shown in the figure; (PLC controller)
2. The main board includes a large module reading and writing part, microcontroller, FLASH memory, real-time clock, ground sensing part, voice part, output control part, etc.;
3. Powerful and stable, simple structure;
4. Connect the power supply: AC 15V/10W;
5. Connect to the card reader antenna;
6. Connect to the ground;
7. The gate opening output is connected to the barrier gate controller;
8. Connect the Chinese LED display;
The main technical parameters:
1. Connected to the card reader antenna, the card reading distance can reach 20 meters;
2. Card swiping record, FLASH can store a total of 10,000 records and blacklist when offline;
3. The real-time clock provides accurate time at any time, with an error of less than 1 minute a month, and can work for more than 2 months in the event of a power failure;
4. Power supply: 15V AC 10W;
5. Ambient temperature: -25℃– +50℃;
6. Relative humidity: less than 95%;
4) Renwei Electronic RFID long-distance reading and writing system
RFID long-distance radio frequency identification technology is the most advanced fourth-generation automatic identification technology in the world. It has just begun to emerge in recent years and has been quickly promoted and applied as a new technology. It has long identification distance, high identification accuracy and fast identification speed. , Strong anti-interference ability, long service life, can penetrate non-metallic materials, etc., and have a wide range of applications. The vehicle automation management system effectively prevents the damage and interference caused by human factors to the management of the parking lot through the long-distance active radio frequency identification technology, realizes the intelligent and scientific management of the parking lot of the building and the property community, improves the operation efficiency, and ensures the safety of the vehicle. Vehicle users in communities or government units are divided into two categories:
(1) Fixed users: They are the owners of units or communities and have to enter and leave the community or units many times a day;
(2) Temporary users: refer to occasional foreign vehicles;
For fixed users, most of the short-distance cards are currently used. When entering and leaving the parking lot, the driver must also open the glass window, stretch the monthly pass card in front of the card reader and shake it a few times to raise the barrier to allow the vehicle to enter.
If you use a long-distance monthly pass card, you only need to stick the monthly pass card on the windshield of the car. Every time the vehicle reaches the gate of the parking lot, the remote card reader can control the lever to automatically lift, so the fixed user vehicle does not need to stop. , Long drive straight into. This greatly improves the traffic efficiency of vehicles and reduces pollution; at the same time, it avoids all kinds of inconveniences caused by bad weather such as wind and rain.
The composition of long-distance card reading equipment includes:
electronic label:
RW-T 901 long-distance electronic label
It is recorded on the electronic label that the vehicle is registered in the parking lot management office
Legal number and certain vehicle characteristic information deemed necessary by the system.
Card reader:
RW-R 902C Long-distance card reader
The integrated design is used to automatically read the data on the electronic tag in the field of view of the microwave antenna, and to judge the legality of the electronic tag.
5. On-site installation guidance of Renwei long-distance card reader
1) Selection of the installation location of the reader
in principle:
? Ensure that the vehicle passes through the effective card reading area of the reader and has enough reading time at a certain speed, and that the control device has enough time to control the gate and gate;
? There is no metal obstruction between the location of the antenna and the tag card;
? The distance between the reader and the control device (or PC) should be as close as possible, and shielded communication cables should be used as required;
The specific on-site installation and implementation are generally determined based on the on-site situation. The following takes the parking lot application as an example to illustrate:
(1) On-site installation method 1:
There is no isolated safety island on the road. Road control equipment (barrier gates) are installed on both sides of the road. Vehicles pass through the card reading area at a speed of less than 30 km/h.In this case: it is required that the reader should be close to the barrier equipment, and the effective range (the farthest linear distance is 10 meters) of the tag reading can cover the entrance ground induction coil or the exit ground induction coil at the entrance and exit. As shown in Figure 1
(2) On-site installation method two:
The road has an isolated safety island, and the control equipment (barrier) is installed on the isolated safety island, and the vehicle speed is less than 30 km/h through the card reading area.In this case: the reader is required to be close to the barrier equipment, and at the same time enable the effective range of the tag to be read (the farthest linear distance is 10 meters) to cover the entrance ground induction coil or the exit ground induction coil at the entrance and exit. As shown
2) Installation of electronic tags
(1) Where to install the electronic label
The application of electronic tags in the vehicle management system is to install the tags on the front windshield of the car cockpit, as shown in Figure 3.
The best position of the electronic tag: If the card reader is installed on the left side of the road in the forward direction (driver’s side), then the tag should also be installed on the left side of the car’s windshield (position A, E). If the card reader is on the right side of the road in the forward direction (the driving side), the label should also be affixed to the right side of the car’s windshield (position C, D). If the card reader is directly above the lane, the tag should be installed near the center line of the rearview mirror or windshield of the car (position B, F). For small cars (including ordinary vans), electronic tags should be installed above the front windshield (position A, B, C) as much as possible. For large vehicles (large trucks or buses, etc.), the electronic tags should be installed in the direction below the front windshield (D, E, F positions), generally based on the principle of not blocking the driver’s sight.
(2) Electronic label issuance management
Electronic label distribution management includes two parts: user registration management and label distribution management.
? User registration management
Before the system user issues the electronic label to the user, he must register the user and assign a card number.
Tag user registration information includes:
1. The name of the label user: the full name of the unit or individual;
2. Card number: the number compiled by the reader user, also known as the label number;
3. Card issuance time: record the date and time of the last card issuance by the user;
4. Number of issuance; record whether the user has issued the card, and if there is any loss, record the number of times it has been issued;
5. Tag ID number: record the ID number of the electronic tag issued to the user;
? Label issuance management
The operation content of label distribution includes:
1. Read tag ID number: read the ID number of the current electronic tag;
2. Tag user registration: add “card number”, “user” name and other information to the management database;
3. Electronic tag authorization check: to distinguish the current electronic tag card number;
4. Tag ID number storage: write the read electronic tag ID number into the database;
Six, after-sales service
1) Service notice
1. The product warranty period is one year. If it is not damaged by natural disasters or human factors, the supplier will provide free warranty during the warranty period;
2. Once the product is sold, it will not be returned unless it needs to be repaired or replaced due to product quality problems;
3. When returning the reader for maintenance service, carefully pack the reader and its accessories into the original anti-static
Inside the foam packing box. If the original packaging box no longer exists, please choose a protective packaging box;
4. Non-commitment clause: The company’s related products have passed the radio transmission equipment of the China Radio Regulatory Commission
Testing and approval, but any radio transmission equipment may be
The operation of the equipment causes electromagnetic interference;
5. The content of the terms of non-commitment: This equipment may cause electromagnetic interference to other electronic equipment when it is working, and the company does not bear any responsibility for this;
6. The company’s suggestion: When using this equipment, you must comply with the relevant local regulations. If there is interference with other equipment, you can consult the manufacturer of the relevant equipment to improve the anti-interference ability of the equipment, or at the same time Use only one device;
[ad_2]
