Electronic Tag Device with Electrophoretic Display for Automatic License Plate Updates
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Solution Overview
Problem
Existing license plates have limited functionality and cannot adapt to changing geographical regions or provide real-time information, leading to cumbersome operations and additional expenses in toll settlements and vehicle tracking.
Innovation Solution
An electronic tag device with electrophoretic display that includes a processor, memory, RFID tag circuit, and cellular communication, enabling the display of various information, automatic license plate number updates based on geographical location, and real-time data transmission for toll management and vehicle tracking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional license plates are used, then the structure is simple and easy to manufacture, but the functionality is limited and cannot adapt to changing geographical regions
Solution Approach 1:
The electronic tag device integrates multiple functions including RFID tag circuit for identification, electrophoretic display for information presentation, cellular communication for data transmission, and positioning for location tracking. This multi-functional integration allows a single device to replace traditional license plates while providing adaptability to different geographical regions through automatic license plate number updates based on location.
Solution Approach 2:
The license plate number displayed on the electrophoretic display is dynamic and can be automatically updated based on the vehicle's geographical location. The positioning circuit determines location, and the processor automatically selects and displays the appropriate license plate number for the current region, making the system adaptive rather than static.
2Adaptability or versatility
If electronic tag device with multiple functions is implemented, then the functionality is enriched, but the operational complexity increases
Solution Approach 1:
The system performs automatic location determination and license plate number updates without requiring manual intervention. The positioning circuit automatically determines the vehicle's location, the processor automatically selects the appropriate license plate number from stored data, and the display automatically updates. This self-service operation maintains ease of use despite the enriched functionality.
Solution Approach 2:
The system continuously monitors the vehicle's position through the positioning circuit and automatically adjusts the displayed license plate number based on the current geographical region. This feedback mechanism ensures the system operates correctly without user intervention while providing enriched functionality for different regions.
3Productivity
If manual license plate updates are used, then the device complexity is low, but the time consumption and operational costs are high
Solution Approach 1:
The manual mechanical process of physically changing license plates is replaced by an electronic system. The electrophoretic display electronically presents different license plate numbers, and the RFID tag circuit electronically transmits identification data. This substitution of mechanical operations with electronic systems dramatically improves update efficiency while managing system complexity through integration.
Solution Approach 2:
Multiple license plate numbers for different geographical regions are pre-stored in the memory of the electronic tag device. When the vehicle enters a new region, the system quickly retrieves the appropriate pre-stored license plate number and displays it, eliminating the need for manual plate changes and significantly improving update efficiency.
4Loss of information
If electrophoretic display is used, then the information display capability is enhanced, but the energy consumption increases
Solution Approach 1:
The electrophoretic display updates information periodically or on-demand rather than continuously consuming energy. The display maintains the current license plate number information without requiring continuous power input, and only consumes significant energy when updating to a new number based on location changes or manual commands.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables automatic license plate number updates, contactless payments, and efficient toll management, reducing operational costs and enhancing the functionality of traditional license plates and tag devices.
Implementation Method 1
display screen configured to display target information
Implementation Method 2
radio frequency identification (RFID) tag circuit connected to the processor
Implementation Method 3
heater disposed between the display screen and the middle plate
Implementation Method 4
heat sink disposed between the heater and the middle plate
Data Source
AI summary
An electronic tag device with electrophoretic display includes: a front frame, a display screen disposed on a side of the front frame, a middle frame disposed on a side of the display screen facing away from the front frame, a circuit board disposed on a side of the middle frame facing away from the display screen, and a rear frame disposed on a side of the circuit board facing away from the middle frame. The display screen is configured to display target information under a control of the circuit board. The circuit board is provided with a processor, a memory and a RFID tag circuit connected to the processor; the memory stores multiple sets of tag data, and the processor is configured to select a target set of tag data from the multiple sets of tag data, and transmit the target set of tag data to the RFID tag circuit.