chrispeng [ad_1]
Automatic parking lot management is the safe and effective management of parking lot using highly automated electromechanical equipment. As a result of minimizing manual participation, personnel costs and losses caused by human error are minimized, and the safety and use efficiency of the entire parking lot are greatly improved.
Parking lots can be divided into two categories: “internal parking lots” and “public parking lots” according to their use objects. The internal parking lot is mainly for the fixed car owners of the parking lot and the units, companies and individuals who lease parking spaces for a long time. Generally, it is mostly used in the underground garages of various units’ own parking lots, supporting parking lots of apartments and residential districts, office buildings and office buildings, long-term parking lot rental car parks and garden villa communities, etc. The characteristics of this kind of parking lot are that the users are fixed, the use of external vehicles is prohibited, the users have a long time to use the facilities, and the safety requirements of the parking lot management are strict. High reliability and processing speed requirements. Public parking lots mainly provide services for temporary individual passengers, and are divided into “fee” and “free”. Public parking lots are commonly found in large public places, such as stations, airports, stadiums, shopping malls and other places. The users of parking facilities are usually temporary one-time users, with a large number and short time. The parking lot management system is required to have low operating costs, easy to use, solid and reliable equipment, and can meet commercial processing requirements such as tolling. Some large public parking lots often have multiple entrances and exits, and the computers at the entrances and exits and toll booths are also required to be connected to each other.
The RFID vehicle long-distance identification system launched by Beijing Jiuding Hi-Tech Technology Co., Ltd. has been successfully applied to multiple depots, stations and parking lots. After the application, it has significantly improved the efficiency of vehicle scheduling and provided intelligent vehicle management. The RFID identification system fully automates the collection of vehicle entry and exit data. On the one hand, it greatly improves the image of establishing a new urban vehicle management, prevents manual operation loopholes, is conducive to data archiving, and ensures the safety and reliability of vehicle entry and exit. On the other hand, it greatly promotes This has improved the pace of automation construction in cities and government enterprises.
The emergence of RFID technology will provide strong technical support for the application of long-distance signal identification and data transmission, and provide the best solution for modern vehicle management.
Parking lot business needs
Generally speaking, users who use parking lots to park are divided into two categories:
The first category of users is “fixed users”, which are characterized by: there are fixed parking spaces in the parking lot, and they drive vehicles in and out 0 to N times a day. In the existing parking lot management systems, most of them use “smart cards (short-distance type)” to manage the entry and exit of the parking lot by “fixed users”. In other words, every time the user enters and exits the parking lot, the driver must stop near the “card reader” and show the smart card at a short distance (less than 1 meter) in front of the “card reader” device, so as to enable the “card reader” Read the card information, drive the “stop lever” to raise, and realize the “release” operation.
When the vehicle passes through the turnstile, the driver has to complete a series of actions, such as: “slow down”, “stop”, “open the window”, “swipe the card”, “wait for the lever to lift”, “drive”, etc. Obviously , This is an inefficient management method that can complete access management functions.
For a long time, parking lot owners have hoped to find an efficient way to manage vehicles driven by “fixed users” without parking. Such a problem-solving method can satisfy both the driver and the parking lot manager.
The second category of users is “temporary users”, which are characterized by: there are no fixed parking spaces in the parking lot, and when necessary, they drive in and out of the parking lot to realize temporary parking. Such users must park and receive management when entering and exiting the parking lot.
In short, we must solve the problem of “parking and brushing off” under normal conditions.
Based on our own mastery of RFID technology and full understanding of the vehicle management business process, we apply RFID technology to the vehicle intelligent management process, thus solving the traditional vehicle release method of parking and swiping cards, greatly improving the efficiency of vehicle release, and ensuring parking The entrance and exit of the venue pass smoothly. Through correct design and installation, vehicles can pass without stopping on multiple lanes at the same time without interfering with each other.
1.1 Smart parking lot solution diagram
In our solution, there are mainly the following key technologies: electronic tags (long-distance cards), long-distance readers, lane controllers and other key equipment.
The long-distance tag is closely integrated with the vehicle/person, and the management system can effectively and accurately collect, record, upload and process the vehicle/person information entering and exiting the unit on a large scale, and the background computer can identify the vehicle based on the uploaded information. The property of driving the gates to open correctly, to ensure that the access control system has an efficient release capability, and achieve “pass without stopping.”
1.1.1 Management of vehicle/personnel access
The installation method is very simple, as long as the reader is fixed to the appropriate position of the channel, for example: on the wall or bracket. The reader and the background management system (software) are connected through a standard interface, the standard interface includes: RS232, RS485, Wiegand. The electronic tag is carried by the student as his (her) identification. Execute logical judgment in the computer software to judge whether the student is entering or leaving, and the corresponding time can be recorded when the person enters or leaves the door (assuming that we install two reading heads A and B at the entrance, A is near the gate, and B is In about 10m inward, when A reads the card information before B, we can judge it as in. When B reads the card information before A, it is judged as out) This can also be used as the unit’s attendance, which is automatically generated Staff’s time sheet, simplifying internal management work.
When employees need to go out, they must get the approval of the leader. If they are allowed to go out, they can be registered and confirmed in the computer software. Then when the staff goes out of the gate, the guard room can quickly learn that they are out illegally or legally, if they are not approved If you go out privately, you can stop it, which can prevent some employees from going out privately and improve management efficiency.
In the scheme, the front-end RFID equipment can form the smallest work unit, work independently, and can be embedded into the existing management system as a subsystem, working together, no matter which way, it can complete the monitoring and management of the channel.
The most basic functions of the system include personnel card issuance, door area settings, access rights, time control, real-time monitoring, record query and report printing, etc. The system host has single-door controller, two-door controller, four-door controller and multi-door controller for selection. In addition, access control data can also be used as raw data for other applications.
Enterprise internal management
In the enterprise, in order to strengthen the management of employees, we can also install several readers where necessary to simplify the management of employees within the enterprise
First of all, it can be used as a library card for employees in the library management, or other places where they need to show their certificates.
Secondly, readers can be installed at the entrance of the office building to confirm when employees enter/exit the plant
Finally, readers can be installed in other occasions where monitoring is required, and the time when employees enter/exit such places can be recorded at any time to strengthen the safety management of the enterprise.
1.2 Schematic diagram of vehicle/person recognition
The core technology of automatic vehicle/personnel management is the automatic identification and automatic discrimination of vehicles. The schematic diagram is as follows:
1.3 The composition of the scheme system
Vehicle/person automatic management equipment can be divided into: vehicle/person automatic identification subsystem, security monitoring subsystem, and so on. Usually includes a central control computer, automatic identification device (Rfid), temporary card issuance and inspection device, car stop, surveillance camera, controllable reminder, etc.
The control center of the parking lot automatic management system is the central control computer. Responsible for the coordination and management of the entire system, including software and hardware parameter control, information exchange and analysis, command release, etc. The system is generally networked for management, integrating management, security, statistics and business reports. It can work independently to form a unit management system, or it can be connected with other systems to integrate into a larger automatic control system.
Features of the technical solution
1. Long distance. The effective reading distance between the reader and the card is 0 to 80 meters, which is suitable for most parking environments; this distance is also the technical basis for “passing customs without parking”;
2. Circularly polarized antenna. The design of the receiving antenna of the reading head adopts a circularly polarized antenna, and there is no direction requirement for the card placement;
3. High speed. When the moving speed of the vehicle-mounted card is 0～200 km/h, the reader can correctly identify the card signal;
4. Long time. The electronic tag can work continuously for 6 to 8 years without maintenance during the period. This reduces maintenance costs for users and management, and directly improves economic benefits.
Key equipment technical parameters
Technical parameters of the reader:
1. Interface support: RS232/485/Wiegand 26 interface to communicate with the host computer
2. Recognition distance: the effective recognition distance (2 ~ 80 meters) is adjustable
3. Recognition speed: within 200km/h
4. Anti-collision: Advanced anti-collision technology, support for multi-tag identification, anti-collision performance of up to 200 identifications at the same time
5. Security: Encrypted calculation and authentication to ensure data security and prevent link eavesdropping and data cracking
6. Anti-interference: using channel isolation technology, multiple devices do not interfere with each other
7. Power: Configurable microwave module working mode, adjustable transmission power
8. Anti-interference and lightning protection: anti-interference and lightning protection design to meet the requirements of industrial environments
9. Recognition method: it is an omnidirectional recognition method, without directional requirements
10. Operating frequency, 2.4 GHz ~ 2.4835 GHz ISM microwave range that is open worldwide, no need to apply and pay
11. Reliability: metal cast aluminum back cover, higher reliability, waterproof and shockproof
12. Development interface: provide various interface functions for development
Electronic label technical parameters:
1. Recognition distance: long distance (2 ~ 80 meters) adjustable, read only
2. Anti-collision performance: can identify up to 200 anti-collision performance at the same time
3. Working frequency band: the global ISM working frequency band 2.45GHz
4. Power consumption: unique micro-power design
5. Communication mechanism: time division multiple access and synchronous communication mechanism based on HDLC
6. Recognition ability: multi-channel high-speed recognition ability
7. Service life: 6-8 years service life
8. Package: solid-state package, resistant to high-strength drop and vibration
[ad_2]
