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1. System background
Special vehicles such as military vehicles and fire trucks have major responsibilities and missions. In an emergency, the call of the vehicle and the real-time understanding of the vehicle’s own situation will determine the success or failure and efficiency of the handling of things. Vehicle monitoring and management is so important. Up. At present, all vehicles entering and exiting the army are manually registered and video surveillance, or use issued parking permits. However, the current management status cannot solve the following problems:
The automatic entry and exit management of vehicles cannot achieve efficient and real-time monitoring;
The departure and return time of the vehicle cannot be monitored;
…
In addition, the driver has to stop the car during the parking process, which reduces the processing time in an emergency. In some existing parking garages, the driver has to complete a series of actions during the vehicle passing through the turnstile, such as “slowing down”, “parking”, “driving window”, “swiping card”, “waiting for the lever to lift” , “Driving”, etc., although it can complete the access management function, but it is an inefficient management method. Such as anti-theft for vehicles, fixed parking space management, and car owners’ checking of vehicle conditions from time to time, etc. cannot be realized.
Dianke Hengtai uses RFID technology to gradually improve the intelligent management of vehicles and make the management of vehicles more standardized. The program designed and successfully implemented by our company has the following advantages: fully automated management, real-time understanding of vehicle conditions, efficient vehicle entry and exit, anti-theft function, vehicle entry and exit and video linkage monitoring, etc.
2. System introduction
2.1 System introduction
According to the actual needs of customers, Dianke Hengtai fully integrates RFID technology with vehicle management, and applies RFID technology to the vehicle intelligent parking lot management process, thereby solving:
1. The traditional vehicle release method of parking and swiping card greatly improves the efficiency of vehicle release and ensures smooth traffic at the entrance and exit of the parking lot;
2. Safety management of vehicles. Through correct design and installation, vehicles can pass without stopping on multiple lanes at the same time without interfering with each other.
2.2 System diagram
2.3 Introduction to system modules
1. Long-distance recognition:
The effective reading distance between the card reader and the tag on the car is 0 to 80 meters, which provides a time buffer from the card reader recognition to the opening of the automatic gate. This distance is suitable for most parking lots. , This distance is also the technical basis for “passing customs without stopping”.
2. Automatic recognition of internal cars
For vehicles inside the army, the system can automatically recognize and release the brakes automatically. The system saves the basic information of the vehicles in the hospital, and the database records the license plates, drivers, basic information of in and out of all vehicles in the garage, and so on. When passing through the entrance, the card reader at the entrance recognizes the ID number of the vehicle tag, and compares this ID number with the ID number in the database. If it is a vehicle in the courtyard, the system controls the brake to open automatically. If the vehicle is not in the hospital, the system will issue an alarm; the system can control the camera to take a picture of the license plate of the vehicle and save it in the database along with the vehicle entry and exit records.
3. The brakes are automatically opened
The card reader recognizes the vehicle. If it shows that it is inside the army, the system will control the brakes to open automatically, eliminating the need for the administrator to open the brakes. This saves time and saves the administrator. Less trouble
4. Temporary management of foreign vehicles
Since external vehicles are not equipped with electronic tags, temporary cards can be used. Temporary card is a card authorized by the system, a card that can be recognized by a reader, but the ID number and color of this card are different from the card of the internal vehicle, and the file in the system is also separate.
5. Effective management of vehicles
For vehicles inside the army, the system can show whether they are in the courtyard. When the vehicle enters the yard, the system shows that the location of the vehicle is in the yard; when the vehicle goes out, the card reader at the exit reads the exit information of the vehicle, and the system displays the location of the vehicle as not in the yard. Using this function, you can count the vehicles in the hospital, and then according to the data in the database, you can determine whether the vehicles are in the hospital at any time.
6. Information feedback
When a vehicle is driven out of the garage, the reader at the exit of the garage can quickly identify the information of the vehicle and upload the information to the management machine. If there is an abnormal exit from the garage, the system will issue an alarm.
Three, system process description
3.1 Build a database
The system first establishes a corresponding database for each vehicle’s label. The database includes information such as tag ID number, vehicle license plate, unit to which it belongs, and person in charge. When the reader sends the ID number of a vehicle tag to the host computer, the host computer can call out the corresponding information from the original database.
3.2 Vehicle storage
Vehicle entry and exit recognition
An active electronic tag is placed in each car, and the tag can realize long-distance data transmission;
When the vehicle arrives at a distance of 0 to 80 meters from the entrance of the garage, the reader will automatically read the information on the tag, and transmit the ID number on the tag to the command center through the controller, and the command center will retrieve the information from the database. List of corresponding ID numbers;
If it matches, it shows that the vehicle belongs to the garage, and then raise the pole to pass. The system will automatically record the time when the vehicle is in the warehouse and save it. If it does not match, it will show that the vehicle does not belong to the garage, then do not raise the pole, call the police and inform the manager to deal with it.
3.3 Vehicle delivery
An active electronic tag is placed in each car, and the tag can realize long-distance data transmission;
When the vehicle arrives at a distance of 0 to 80 meters from the exit of the garage, the reader will automatically read the information on the tag, and transmit the ID number on the tag to the management machine through the controller, and the management machine will retrieve the corresponding information from the database. List of ID numbers;
If it matches, it shows that the vehicle belongs to the garage, and then raise the pole to pass. The system will automatically record the time when the vehicle is in the warehouse and save it.
If it does not match, the vehicle will pass through forcibly, and the sound and light alarm will be used to alarm and record the video.
3.4 Notification function of vehicle delivery
When a vehicle is driven out of the garage, the reader at the exit of the garage can quickly identify the information of the vehicle and upload the information to the upper computer. The management computer can clearly see the label information of the vehicle. If it is an abnormal departure, The reader and the system will alarm, and will link with the video surveillance system to retrieve nearby video surveillance pictures for effective management.
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