Smart university RFID electric vehicle safety management system

Project construction background

With the increase in the number of electric vehicles in colleges and universities, violations of electric vehicle regulations on campus have become more prominent, seriously affecting the campus environment and posing safety risks. Teachers and students have responded strongly. Although the school has actively formulated relevant regulations to regulate, lay speed bumps and divide parking areas, it is still difficult to effectively control a series of problems caused by the proliferation of electric vehicles. Therefore, how to maintain the order of electric vehicle management in colleges and universities to the maximum extent, integrate relevant resources, and save management costs so that schools can quickly and efficiently solve electric vehicle management problems has become increasingly important. There is an urgent need to build a campus electric vehicle safety management system and improve the campus Traffic management level creates a good environment for deepening the construction of civilized universities.

2. Project construction requirements

    1. Put an end to illegal parking of electric vehicles such as parking indiscriminately, blocking passages, etc.

    2. Prevent electric vehicle batteries from entering apartment buildings for charging to avoid fire safety accidents

    3. Protect personal property and prevent electric vehicles from being stolen.

    4. Prevent random entry and exit of the door and eliminate security risks

    5. Establish one code for each vehicle and bind people and vehicles to avoid the accumulation of zombie vehicles.

    6. Improve the reasonable allocation of school parking spaces and reasonable parking of vehicles

3. Project construction technical route

Taking the Internet of Things technology as the core and integrating cloud computing, big data, artificial intelligence, automatic control, mobile Internet and other technologies as the basis, we will create a smart campus non-motor vehicle information database to achieve traceability and tracking, control of random stops and starts, Access Control, and violation of regulations. Integrated intelligent management and control of charging, illegal driving, vehicle anti-theft and security, etc., from accuracy, safety, convenience to comprehensive improvement of management efficiency.

4. Principles of RFID technology in project construction

Issue electronic tags to each electric vehicle in colleges and universities, and associate the tag number with the owner's information to achieve accurate correspondence between vehicle information and basic personnel information, and record the electric vehicle brand, model, color, size, weight, and the owner's identity information, Basic information such as address and contact information. Facilitate the reissue of lost electronic tags, update information on electric vehicle transfers, register stolen vehicles, and inspect suspicious vehicles.

Electric vehicle anti-theft uses advanced radio frequency identification technology and network transmission technology, supported by back-end management software, to realize the safe management of electric vehicles in colleges and universities. Specifically, it includes the following three parts:

1) Radio frequency identification technology, including electronic tags and identifiers. The electronic tag has a globally unique ID number, which can uniquely identify all electric vehicles. The identifier can automatically collect the ID number of the electronic tag and transmit it to the database for identity verification.

2) Network transmission technology, which transmits the tag information collected by the identifier to the network virtual server in a certain format.

3) Backend management software, including electric vehicle basic database and management application system. The basic data inventory contains basic information about all electric vehicles, such as owner, model, license plate number, electronic tag number, etc. The management application system will realize a series of management functions such as vehicle registration, cancellation, reissue, transfer, loss reporting, anti-theft supervision, etc., and provide various query and statistical functions.

5. Project construction scenario

5.1. Parking area

Place a 2.4G&125K dual-frequency RFID tag at the bottom of the electric bicycle pedal, and embed the RFID induction antenna at the planned designated parking spot to form a "parking induction line" in the parking area. When the user moves the electric bicycle to the "parking induction line" where the RFID induction antenna is pre-buried in advance, the RFID electronic tag placed at the bottom of each electric bicycle pedal will directly sense and transmit the identified electronic tag ID number to In the background, after analysis and judgment, the background determines whether the electric bicycle has accurately parked in the parking area.

5.2. Apartment building entrance

Paste a 2.4G RFID electronic label on the electric bicycle battery, and install an RFID identifier at the planned entrance and exit of the lobby of the university apartment building. Once the electric bicycle battery with the identification label enters the RFID identifier identification area, the identifier will automatically Call the police, and at the same time transmit the alarm information to the background monitoring center through wireless transmission. The staff of the background monitoring center contact the on-site administrator through phone calls, text messages, etc., and inform them of which dormitory and which student brought the electric bicycle battery into the apartment building. The administrator promptly checked the situation through on-site video and back-end information, and prohibited the use of batteries upstairs.

5.3. University entrance

Place a 2.4G&125K dual-frequency RFID electronic tag at the bottom of the electric bicycle pedal, and embed the RFID induction antenna at the planned entrance and exit of the designated university to form a "parking induction line" at the entrance and exit. When the electric vehicle moves to the "parking induction line" with an RFID induction antenna embedded in advance, the RFID electronic tag placed at the bottom of each electric bicycle pedal will directly sense and transmit the identified electronic tag ID number to the background. After analysis and judgment in the background, it is determined whether the electric bicycle is legal.

The barrier-free access gate installed at each entrance and exit can be linked with the university's electric bicycle management system to automatically verify the identity of electric vehicles and people entering and exiting the school gate, automatically open and close the access gate for students and authorized electric vehicles, and verify the system for suspected problems. For people and vehicles, the system sends warning signals to security personnel to remind them and improve safety awareness.

5.4. Three scenario deployment diagrams

Three scenario deployment diagrams

6. Project construction network architecture

The network architecture of the solution is as shown in the figure. Data is transmitted wirelessly through RFID (2.45GHz+125K) between the anti-theft chip and the IoT base station. Data is transmitted between the IoT base station and the server through wired/4G wireless. The signal at the base station is poor. (in the building, signal blockage), the wired network interface can be expanded.

Electric vehicle network topology diagram

7. Main hardware for project construction

The system hardware mainly includes RFID base station, card issuer, 125K activator, induction antenna, RFID electronic tag, switch, sound and light alarm, etc. The following is an introduction to the core equipment:

(1) RFID base station (Ethernet transmission)

    A new generation of base station equipment based on IoT technology is used for access to IoT gateways in university smart campuses. It combines with IoT electronic tags and backend systems to form a complete networking system. The base station implements data collection, and uses multiple upload methods such as Ethernet and 3G/4G to upload the collected data to the management and control background to ensure the consistency, integrity and confidentiality of data transmission.

(2) Electronic label

    The electronic tag is a 2.4G+125K dual-chip design. After being parked in the specified parking area, the tag sends signals to the outside at regular intervals. This product has outstanding features such as ultra-low power consumption, long service life, low average cost, maintenance-free, safe and healthy for the human body, no electromagnetic radiation pollution, and safer to use.

(3) 125K activator

    The 125K activator can provide 2 induction bands, each of which can sense a maximum sensing area of 30 meters long * 2 meters wide * 2 meters high.

The signal emitted by the activator can be continuous or pulsed, and the working mode of the electronic tag can also be received continuously or pulsed. Therefore, different recognition speeds and recognition capabilities can be achieved for different environments by adjusting the working mode and parameters. , achieving a good performance balance between speed and power consumption.

(4) Card issuer

    A card issuer is a Tool for reading and writing cards, but it is different from a reader or reader. A card issuer can perform operations such as card reading, card writing, authorization, and formatting.

8. Project construction system functions

   1. Create vehicle Files to achieve standardized management of one vehicle and one code

   2. Management of vehicles entering and leaving the school gate

   3. Early warning when batteries enter the apartment building

   4. Standardize parking management. If parking is not carried out as required, the system will automatically alert and notify security and car owners to move the car.

   5. Zombie vehicle statistics

   6. Vehicle anti-theft management

   7. Vehicle positioning and trajectory query

   8. Display of the number and distribution of empty parking spaces