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1. Project background and significance
Because 4S shops need to repair and maintain a lot of vehicles every day, and are highly mobile, there are certain difficulties in management, which are prone to management loopholes and cause unnecessary management problems. At present, most 4S shops still use manual recording methods for vehicle management. , Not only wasting time and paper, but also the accuracy and standardization of information could not be guaranteed.
Aiming at various problems in 4S stores and above, Chuangyi Technology uses wireless sensor network and RFID radio frequency identification technology, through the installation of RFID hardware and corresponding functional software, and develops a complete and efficient 4S store vehicle according to the actual situation of vehicle management. Intelligent management system.
From the perspective of the actual vehicle management problems in 4S stores, the RFID factory area vehicle management positioning system was developed. This system focuses on solving the vehicle management problems in 4S stores, realizing real-time positioning of the vehicle area, bringing convenience to managers and solving at the same time The many management problems of 4S stores, strict management of the operation process of 4S stores, reduces manual recording time of personnel, improves accuracy, avoids paper waste, optimizes the service experience of customers entering the store, and brings greater benefits to the 4S store.
This system is designed in accordance with the 4s shop and runs independently. The 4S shop is designed according to four functional areas, namely the pre-inspection area, maintenance area, car washing area and vehicle parking area. The vehicle positioning tag system mainly realizes full coverage positioning in the above four areas and the roads in the factory, and realizes vehicle tracking, real-time positioning, vehicle motion status monitoring, video linkage, data storage, repair work visualization, repair work time preset and alarm , Customer mobile APP connection system and other management functions.
2. Function introduction
2.1 System function
2.1.1 Write customer vehicle information;
2.1.2 Customer vehicle movement status monitoring;
2.1.3 Record of the time when the customer’s vehicle enters and exits;
2.1.4 Real-time positioning of customer vehicles;
2.1.5 All-round video linkage of customer vehicles;
2.1.6 IoT touch screen;
2.1.7 The customer’s vehicle maintenance preset time exceeds the alarm;
2.1.8 View vehicle information in real time on the client’s mobile phone APP;
2.1.9 Three-dimensional visualization of customer mobile APP;
2.1.10 Customer vehicle entry and exit data storage;
2.2 Function realization
2.2.1 Vehicle information writing
When picking up the car for pre-inspection, the staff will equip the vehicle with dual-frequency card tags, and enter the relevant information of the vehicle in the system computer: the owner’s name, the owner’s mobile phone number, the license plate number, the vehicle brand, the vehicle model and the need for this entry For the service item, the related payment generated by the service item is bound to the tag. The tag ID number is unique and will not be confused with other tags;
2.2.2 Vehicle movement status monitoring
The dual-frequency card tag has a built-in motion monitoring module to automatically monitor the motion state of the vehicle. When the car is moving, the acceleration sensor detects the motion of the vehicle, even a slight movement can be sensed. And real-time feedback to the system, convenient for customers to inquire in time;
2.2.3 Record of vehicle in and out time
When the worker drives into the functional area, he puts the card tag close to the directional card reader, the card reader will read the card tag information, and automatically transmit the information to the upper computer, the upper computer will be based on the data from the directional card reader Live Update;
2.2.4 Real-time vehicle positioning
When the staff drove the car to the parking space in the functional area, the omnidirectional card reader would automatically receive the data from the tag and transmit the data to the host computer. The system will determine the position of the vehicle based on the attenuation value between the omnidirectional card reader and the tag The judgment positioning of the positioning of the label;
2.2.5 Vehicle omnidirectional video linkage
Schematic diagram of vehicle omnidirectional video linkage
In the functional area, each station and vehicle need to install the Internet of Things video camera through the road. The camera will cover all the above areas and cooperate with the omnidirectional card reader to complete the video linkage. Users in the customer rest area can use their mobile phones to view the video images of their vehicles in real time. After entering the vehicle information, the omnidirectional card reader at the location of the tag receives the instruction, and at the same time it will link the camera video corresponding to this card reader to realize the video linkage; this technology is realized by the vehicle RFID positioning technology. First, RFID positioning technology locates the location of the vehicle, and then automatically matches the nearest camera at the location of the vehicle.
2.2.6 Smart IoT touch screen
An information display touch screen for the pick-up area is configured in Zone 1, and the staff can enter pick-up information: pick-up time, vehicle condition, owner information, service items required this time, and preset service required time.
Schematic diagram of the touch screen display project of the Internet of Things in the workshop
2 zone workshop information display The touch screen can display the overall status of the workshop, including the number of internal vehicles, the items that each vehicle needs to be maintained, which repairman is repairing which vehicle, the vehicle’s preset maintenance time, the time that has been performed, and the remaining time .
3 zone workshop information display touch screen can display the current vehicle information of this car wash workshop. Which car wash is washing this car.
The 4 zone delivery area information display touch screen can display how many vehicles there are in this area and which ones are. If the owner wants to view the service process of the vehicle here, he can enter any of the owner’s name, mobile phone number, and license plate number in the system to view it.
The information display of the rest area in zone 5 can be used for customers to query the status of the vehicle and view the video. Enter your name, mobile phone number, or license plate number in the system to query the status of your car at this time, when to enter the store, During the period, which staff will perform the service, the current location of the vehicle, the current service item, how long has been in the store, how long it is estimated that the repair will be completed, and the cost of the repair, etc.
2.2.7 Vehicle maintenance preset time out alarm
When the staff picks up the car, the repair time is preset according to the different repair needs of the customer’s vehicle. When the set time is reached, the vehicle repair is not completed, the system will send an automatic alarm to remind the staff to take care of it, and the user can also use the mobile phone APP to do it Check;
2.2.8 Real-time view of vehicle information on the client’s mobile phone APP
Paste the QR code of the intelligent IoT vehicle management system in areas covered by wireless networks such as the pre-inspection area, lobby, and customer waiting area. Customers can scan the code to install the IoT vehicle management system APP client, and the client authority is set to view mode , Customers can view the real-time location of the vehicle, real-time video linkage, which maintenance worker is repairing, in which area, maintenance phase, and remaining phase of the maintenance by entering one of the owner’s name, owner’s mobile phone number, and license plate number in the APP. , Estimated remaining maintenance time, maintenance costs, etc. After the maintenance is completed, you can also pay on the APP side to score the service evaluation.
2.2.9 Three-dimensional visualization of customer mobile APP:
When you enter the system homepage, you can see the map display part. We can drag and drop the map to zoom out, and click on a certain area to enter the map display part of the area, and you can view the situation in the area.
2.2.10 Data storage of vehicles entering and leaving the store:
All data generated in the Internet of Things system will be automatically saved in the system. Customers can set the length of data retention. The system will automatically delete expired content at a preset time point. Different sizes of storage hard disks can be configured according to the specific needs of customers. When an accident or dispute occurs, it is convenient for the 4S shop administrator to view the backup.
3. System design
From the perspective of the actual vehicle information management problems in 4S stores, Beijing Chuangyi has developed an RFID vehicle intelligent management positioning system in the field. This system focuses on solving the management problems of vehicles in 4S stores, and realizes simple vehicle area positioning for managers. Brings convenience, and can solve many management problems of 4S shops, strictly manage the staff and vehicle maintenance process, greatly improve the staff’s work efficiency and the accuracy of information recording, optimize customer service, and bring more to the enterprise. Great benefit.
3.1 Design goals
We have fully considered the integrity of the system and the expansion and upgrade of the 4S shop system in the future. Therefore, the system functions and system architecture are designed in accordance with the entire 4S shop.
3.1.1 Realize the effective identification of vehicles, so that the system management reflects “humanization, informationization and high automation”.
3.1.2 Provide information collection for vehicles entering and exiting, and collect and record when entering and exiting various functional areas.
3.1.3 Equipped with RFID dual-frequency positioning tags for each vehicle to monitor the movement status.
3.1.4 When a danger occurs, an emergency alarm message will be sent out through the system to remind the management personnel to deal with the danger message as soon as possible, so as to avoid the loss of the vehicle.
3.1.5 The preset time is overtime alarm. When the maintenance worker’s operation time exceeds the preset time, the system will automatically alarm.
3.1.6 The safety, scalability, easy maintenance and easy operation of the system design.
3.1.7 The label meets government requirements for human radiation.
3.1. System equipment meets the requirements of staff management
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