Electronic Seal With Impedance Matching Circuit For RFID Security
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Solution Overview
Problem
Conventional electronic seals with radio frequency identification (RFID) chips are vulnerable to counterfeiting due to public standards making it easy for unauthorized access and recording of specific codes, leading to potential container tampering and theft.
Innovation Solution
An electronic seal incorporating multiple RFID units and an impedance matching circuit, along with an antenna assembly, to adjust impedance matching and transmit specific codes at varying powers and intensities, making it difficult to record and counterfeit the seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single RFID chip is used in the electronic seal, then the device complexity is low and ease of manufacture is high, but the security is vulnerable to counterfeiting due to public standards allowing easy reading and recording of codes
Solution Approach 1:
The electronic seal is divided into two separate parts: a plug containing the RFID chip and a socket containing the antenna assembly. This segmentation prevents unauthorized access to the RFID chip, as the chip remains enclosed in the plug which is locked within the socket. The physical separation and locking mechanism protect the RFID chip from being easily removed or accessed for illegal code reading and recording.
2Ease of operation
If public RFID standards are used, then ease of operation and compatibility are improved, but the codes can be easily read, recorded, and counterfeited by unauthorized parties
Solution Approach 1:
The patent implements preliminary protective measures by enclosing the RFID chip in a locked plug-socket mechanism before any code reading can occur. This preliminary anti-action prevents unauthorized access to the chip, making it impossible to illegally read or record the codes even though public RFID standards are used. The physical security mechanism is in place before the harmful action of code theft can take place.
3Ease of manufacture
If the RFID chip is easily accessible, then ease of repair and manufacturing are improved, but the seal can be easily counterfeited and container integrity compromised
Solution Approach 1:
The RFID chip is nested within the plug, which is then inserted and locked within the socket containing the antenna assembly. This nested structure provides multiple layers of protection for the RFID chip while maintaining a compact overall design. The chip is securely enclosed through the plug-socket nesting mechanism, preventing unauthorized access while preserving the functional integration of the electronic seal system.
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
Enhances security by making it challenging to illegally record or counterfeit the seal, ensuring the integrity of the container contents and preventing theft by using multiple codes and varying signal intensities.
Implementation Method 1
The antenna assembly is used to receive an electromagnetic signal for identification to excite the radio frequency identification units to transmit the specific codes through the antenna assembly
Implementation Method 2
The impedance matching circuit is provided between the radio frequency identification units and the antenna assembly for adjusting the impedance matching of the radio frequency identification units to the antenna assembly, thus adjusting excitation powers and feedback powers
Data Source
AI summary
An electronic seal includes a radio frequency identification apparatus, an antenna assembly and an impedance matching circuit. The radio frequency identification apparatus includes at least two radio frequency identification units each for providing a specific code for identification. The antenna assembly is electrically connected to the radio frequency identification units. The antenna assembly is used to receive an electromagnetic signal for identification to excite the radio frequency identification units to transmit the specific codes through the antenna assembly. The impedance matching circuit is provided between the radio frequency identification units and the antenna assembly for adjusting the impedance matching of the radio frequency identification units to the antenna assembly, thus adjusting excitation powers and feedback powers of the specific codes from the radio frequency identification units through the antenna assembly.