Talking about the considerations for the contractor before signing the contract of the parking lot system project
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When the same customer enters
Parking lot system
When negotiating with the company, pay attention to the following aspects:
1,
Parking lot management system
Configuration
1) Simple system: The system is only equipped with card reading and writing equipment that manages vehicle access,
Car stop
,
Vehicle detector
Equipment and background management equipment, can also be equipped with import and export voice prompts,
Parking space display
, But generally do not configure an image comparison system,
Automatic card issuing machine
,
Automatic card collection machine
, Intercom equipment. This system is only for general safety,
Parking lot fee management
, The background management computer only keeps the time records of vehicle entry and exit and parking lot charging records. For temporary
Vehicle toll management
Manual card issuance and card collection are required. Temporary cards are easy to lose. At the same time, there are certain hidden dangers to the safety of temporary vehicles. Therefore, this system is suitable for communities that only manage the owners’ vehicles or only want to invest a small amount of money in the construction of parking lots.
2) Standard system: this is the most widely used one currently
Parking lot charging system
, Equipped with card reading and writing, voice prompts, parking lot display screens, automatic card dispensers, vehicles
Ground sensor
,
Smart barrier
And other equipment, but also equipped with import and export image capture comparison system, applied to various vehicles
Parking lot management charging system
This system not only has the function of one car and one card, but also uses the image capture and comparison system to double-protect the vehicle. The background management computer not only has the time of vehicle entry and exit, the charge record, but also the time of every two vehicles. The corresponding pictures are kept, which can provide important evidence after the accident. This is a management system with relatively complete functions.
3) Enhanced system: This system has a standard
parking lot
On the basis of all the functions and configurations of the system, in different special occasions and different customer requirements, the intercom,
Location Guidance System
Screen, ID snapshot,
Traffic light control
,
Long-distance card reading
, Voice prompts and other functional equipment to meet the requirements of various special places.
2,
Parking lot design
size
1) The entrances and exits are at the same intersection: when vehicles are in the same location, the installation location of the entrance and exit management equipment should be determined according to the actual situation on the spot. When the width of the passage is not more than 5 meters, the entrance and exit blocking equipment will share one; when the width of the passage is greater than 5 When the meter does not exceed 8 meters, the entrance and exit channels should be designed separately.
Automatic barrier
The design of lanes should also be divided; (Because the steering wheel of domestic vehicles is located on the left side of the vehicle, the card reader equipment at the entrance and exit should also be installed in the corresponding position, so the above two arrangements are different from the rules of traffic vehicles driving on the right, so this This arrangement is limited to use within the community). When the width of the traffic road exceeds 8 meters, it is necessary to establish a safety island for the fixed system equipment in the middle of the road (generally 5.5 meters × 1.3 meters × 0.18 meters). Only in this way can it be convenient for vehicle owners to use and comply with traffic rules.
2) The entrances and exits are not at the same intersection: When vehicles in the community enter and exit in different passages, the main one is to consider the direction of vehicle circulation in the community, which direction is convenient for exit, then this passage is designed as an exit, otherwise, the other passage is an entrance ; If there are no special requirements for the entrance and exit channels, the closest channel to the management office shall be the exit.
The arrangement of the above equipment needs to be based on a principle: that is, the distance between the entrance card reader device and the entrance barrier railing is not less than 3 meters, and the exit
Toll booth
The distance from the exit barriers should not be less than 2.6 meters; in addition, the entrance and exit card reading equipment should be placed on the straight passage as much as possible. If the curve cannot be avoided, enough distance should be left for the vehicle to turn around to read and take the card.
3.
Parking lot system engineering
quantity
1) The longest distance between the entrance and exit of the vehicle needs to be determined (mainly for the case where the entrance and exit are separated) in order to determine the number of pipe construction wires.
2) It is necessary to determine the pavement conditions between the entrances and exits of vehicles and determine the type of pavement (concrete pavement, square brick pavement or turf pavement) on which the pipeline is routed in order to determine the size of the construction volume.
3) For the case where the entrance and exit are at the same intersection, it is necessary to confirm whether to build a safety island for the fixed system equipment. In addition, it is also necessary to confirm whether the safety island needs to be tiled.
4.
Parking lot system
Management model
1) No management center: For an independent one-in-one-out smart parking system, in the case of low traffic volume, in order to reduce the construction cost of the system, the back-end card authorization and data storage server computer and export charge computer can be used Integrated (ie stand-alone parking lot system), all installed in the duty room at the exit (or
Sentry box
Inside) unified management.
2) Set up a management center: For communities with more than one exit or a community with a large traffic volume, a background management server should be set up in the financial room of the management office. This service period and the charging computers of each exit are carried out through network cables or optical cables. Connection, unified storage of vehicle access data for all exits, and processing of card issuance and authorization, and all vehicle data can be inquired at any time.
5. Selection of information carrier for parking lot system
1) ID (Emid) radio frequency card: for the needs
Long-distance card reader
Users (generally referring to the reading and writing distance of more than 20 cm), the ID reading and writing system must be adopted, that is, the radio frequency card used by the car owner is
Em card
, The corresponding read-write recognition system is also an ID recognition system. The characteristic of ID card is that it can reach
Long-distance card reading
Or ultra-long-distance card reading ability, the owner can
Remote swipe
or
Swipe without parking
, This is an ideal system for the owner’s vehicle, but due to
ID card
It can only read but not write information, so the operation of the entire system is completely dependent on the back-end management computer, and cannot run independently from the computer (referred to as
Run offline
). At the same time, there are high requirements for the wiring of the equipment, that is, the supporting communication equipment, so it is not recommended to use this system for places with heavy traffic or places with many temporary vehicles.
IC (Mifare-1) radio frequency card: For users who require no more than 10 cm of reading distance, IC card is an ideal choice, because this kind of card has a built-in storage CPU chip, which can identify information and write information directly at the same time In the card’s built-in chip, there is little dependence on the background management computer. If the management computer fails or the communication line fails, the entire system can still run independently, and the data is stored in the single-chip microcomputer of the card reader. After the computer failure is cleared, These data will be automatically uploaded to the management computer for permanent storage.In addition, the built-in CPU of this kind of card is divided into 16 sectors, which can write the information of different systems into different sectors (such as parking lot, access control, attendance, etc.).
All-in-one card
, This kind of card has become the current mainstream radio frequency card. The disadvantage of this card is that the reading and writing distance is short (usually within 10 cm), and the cost of the card is relatively high.
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