Intelligent parking management system composition and function introduction

1. The composition of intelligent parking management system

Intelligent parking management system consists of exit and entrance management stations, parking spaces and vehicle guidance, computer monitoring center and other parts.

The entrance management station of the parking lot is equipped with a floor-sensing coil, gate machine, inductive reader (automatic card issuing, card reading, control, vehicle detection), walkie-talkie, indication display entrance, Chinese electronic display, vehicle counter, communicator, Video switcher, video distributor, color camera, etc.

The export management station of the parking lot includes a sense coil, an export machine, a walkie-talkie, a Chinese electronic display, a gate machine, a communicator, a video switcher, a video distributor, a color camera, and the like. The parking space display and vehicle guidance system consists of parking space ultrasonic detectors, power supplies, controllers, LED display screens, and light guide signs.

The computer monitoring center includes computer hosts, monitors, walkie-talkies and ticket printers, etc. It has functions such as real-time monitoring, device management, history query and parameter setting.

2. Intelligent parking management system function

The function of the intelligent parking management system includes the following points:

Garage management system should be able to implement linkage monitoring and integrated management of computer management and access control, security patrols, elevators, anti-theft and fire alarm systems;

Inductive smart card technology is adopted to strengthen the control of vehicle entrances and exits;

Optimize traffic flow path, intelligently guide parking, improve parking space utilization rate;

Satisfy all types of user parking needs, optimize the charge management;

Use image recognition technology to prevent theft.

3. Intelligent Parking Management System Workflow

At the entrance of the parking lot, when the parking space display allows the vehicle to enter, the vehicle enters the entrance. The temporary parking user needs to press the button of the card reader at the entrance to take out the temporary time card from the automatic card reader. The fixed user does not have this. Link. After the card-carrying vehicle confirms the card reading, the image recognition system captures and records the car shape and the license plate image, stores it in the database of the management system, and the car-stopper is automatically opened, and the vehicle enters the parking lot.

There is a vehicle lane control system in the parking lot. The parking space indicator and the vehicle guidance indicator will provide accurate information about parking spaces at a certain floor, a certain area and a certain position, so that the vehicles can reach the parking space within the shortest time. When the vehicle leaves the parking lot and goes to the exit, the management system confirms the parking time through the proximity card and calculates the parking fee, which is confirmed by the image recognition review. Vehicles with temporary time cards need to pay for the payment. Fixed users confirm the validity or deduct the cost by reading the card. After the charge is completed, the blockper will automatically open and release. The number of parking space display records is automatically increased by one. When there is no parking space in the parking lot, the parking space indicator at the entrance shows the message “The parking space is full.” The system will no longer allow the vehicle to enter.

4. Intelligent Parking Management System Subsystem Features

4.1 Induction and Induction Smart Card System There are a large variety of ticket cards in parking garages, including barcode cards, photoelectric cards, magnetic cards, IC cards for card insertion, and induction IC cards.

At present, non-contact proximity smart cards adopting radio frequency technology are more popular. Such smart cards can not only accurately record the vehicle number and the time of entry and exit, but also record the situation of receiving and paying the vehicle. The smart card system adopts the bus way to realize the communication function.

The existing bus systems generally have the following types:

(1) Traditional RS422 interface mode: The communicator provides a bus interface and can have up to 16 reader controller terminals. The communicator is connected to the import/export card reader through the RS422 interface, and is connected to the system system network equipment through the RS232 interface.

(2) Topology technology: The network structure is not limited by a single form, and the network topology can be freely combined. The network is not limited by the communication medium and can communicate under any communication medium. This kind of bus mode is suitable for the communication between the import and export of multi-input and multi-out parking lots and the central control room;

(3) Controlling the local area network bus technology: The control local area network bus network is flexible, with high reliability, high anti-interference ability, any node can send information to other nodes on the network at any time.

4.2 Image Recognition System The image recognition system is divided into two types: automatic association, automatic recognition and automatic association, and manual recognition.

The image recognition device is generally deployed at the entrance and exit, adopting the video distribution method. On the one hand, the video signal is transmitted to the security monitoring system. On the one hand, the main feature information of the captured vehicle is stored in the database of the system. When the vehicle is out of the warehouse, Store information for comparison to determine if the outgoing vehicle information is correct.

4.3 Charging System The charging system divides users into two types, one is a fixed user and the other is a temporary user.

Fixed users adopt advanced payment methods (one month, three months, six months, or one year), and no charges are charged each time they enter or leave the library. Temporary users pay fees based on the current parking time and rates. Billing methods include automatic billing, automatic billing, automatic billing, and manual billing:

(1) Automatic billing and automatic billing: When the vehicle is out of the warehouse, the card reader will automatically calculate the fee according to the admission time and the billing standard after the card reader has read the card. The fixed user will complete the deduction at the same time as checking the card, and the temporary user can Export the card, settle the fee, and obtain the charge certificate; (2) Automatic billing and manual billing: The manager obtains the pricing information from the charging terminal according to the card held by the user and displays it to the parking person. The parking person pays the parking fee at the displayed price. After the fee is settled, the toll terminal prints the information on the receipt of the parking fee on the ticket.

4.4 Parking Display and Parking Guidance System

(1) Intelligent parking guidance system This system uses multimedia technology to monitor the use of parking spaces through networked ultrasonic sensors, and displays the direction and number of empty spaces and other information through smart displays so that drivers can find empty spaces through the shortest path.

(2) Collection and display of vehicle and parking space information This section adopts dynamic simulation technology, consisting of parking space ultrasonic detectors, power supplies, controllers, intelligent direction indicators, and metal simulation boards. The detector is installed above the parking space, and the metal simulation board is installed at the parking entrance of each floor of the underground. The LED on the drawing board represents the dynamic real-time information of the vehicle parking spaces and empty parking spaces transmitted by the detector in red and green colors. The detector is connected to the controller through a signal line and a power line. Ultrasonic sensors are a key component of the parking guidance system, which provides power and networking through the bus. The detection distance is generally 0.6m~4.0m, which can be adjusted individually or as a whole according to actual needs. Ultrasonic synchronization pulses between sensors must avoid mutual interference. The fieldbus system consists of multiple subsystems. Each subsystem can provide power for 125 sensors and can be configured with multiple direction indicators. The intelligent direction indicator realizes networking and power supply through the bus. It can configure itself to monitor a certain range of sensor addresses according to the user's needs. It can display the direction and number of free parking spaces in a certain lane and area by connecting to the attached monitor. It can also connect the master through the upper installation bus. The monitor counts and displays the total number of slots. The LED display is installed above the metal simulation board at the parking entrance of each floor in the underground. The voice prompts and Chinese scroll display time, parking method and precautions. Each light guide sign consists of two sets of lights, one set showing "with parking space" and one set showing "Please go straight." It is controlled by a parking space ultrasonic probe. When a group of parking spaces is full, it receives the signal from the controller and it turns off the "parking" indicator. The driver can follow the light guide and display the indicator "parking" indicator along the parking space to find the parking space.

(3) Ultrasonic sensor vehicle detection Within a certain time interval, the sensor emits an ultrasonic pulse and measures the return time of the pulse. During the measurement, if the pulse return time is shorter than the ground return time as the basis of the calibration, the sensor will determine that the vehicle is in the field. Multiple sensors can be calibrated synchronously via a network-generated calibration command. Sensors can use the built-in LED to display the parking space occupied and idle state. In most cases, the on-site status can be easily seen by the attached LED indicator lights placed in the parking lot lane.