Transit Turnstile Gate Dual Processing Unit RFID Validation
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Solution Overview
Problem
Turnstile gates face challenges in processing Radio Frequency Identification (RFID) credentials efficiently due to increased storage requirements with new guidelines using multiple digits, which can be costly to address through hardware replacement.
Innovation Solution
A transit system gate design featuring a movable barrier, secured storage, an RFID card reader, and dual processing units, where the first unit generates and transmits a hash value of RFID credentials, and the second unit checks validity against a list stored in additional memory, allowing for local processing without internet transmission and compliance with new digit standards without hardware modification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If new guidelines using multiple digits are implemented to identify RFID credential data, then measurement precision and reliability of credential validation are improved, but storage capacity requirements increase and hardware replacement costs increase
Solution Approach 1:
The patent segments the credential validation process into two parts: the first processing unit handles basic validation with limited storage, while the second processing unit with expanded storage handles the comprehensive multi-digit guideline validation. This segmentation allows the system to achieve higher measurement precision through the second unit without requiring complete hardware replacement of the first unit.
Solution Approach 2:
The patent implements a nested architecture where the second processing unit with greater storage capacity is integrated alongside the first processing unit. The second unit contains or supplements the validation capabilities of the first unit, allowing the system to expand storage capacity while maintaining existing hardware infrastructure, thereby reducing replacement costs while achieving improved validation precision.
2Speed
If RFID credentials are processed locally at the gates rather than transmitted over the internet, then processing speed is improved, but storage capacity requirements increase
Solution Approach 1:
The patent divides the local processing functionality between two processing units: the first unit performs rapid basic processing with minimal storage, while the second unit provides enhanced local processing capability with expanded storage for comprehensive credential validation. This segmentation enables fast processing speeds while distributing storage requirements across multiple components.
Solution Approach 2:
The second processing unit creates a local copy of the credential validation database with expanded capacity, allowing the system to perform complete local validation without internet transmission. This copying approach enables fast processing speeds while the distributed architecture manages the increased storage requirements efficiently.
3Adaptability or versatility
If storage capacity in gates is increased to handle multiple digits of RFID credentials, then adaptability to new guidelines is improved, but hardware replacement costs increase
Solution Approach 1:
The patent segments the hardware into two processing units with different storage capacities, allowing the system to adapt to new multi-digit guidelines through the second unit while preserving the first unit. This segmentation enables guideline compliance adaptability without requiring complete hardware replacement, as the first unit can remain in service.
Solution Approach 2:
The patent creates a universal system where both processing units can handle credential validation, with the second unit providing enhanced capability for new guidelines. The system can operate in multiple modes, using either unit depending on the validation requirements, thereby achieving adaptability while minimizing hardware replacement costs through continued utilization of existing infrastructure.
Data Source
AI summary
A gate for regulating access in a transit system is disclosed. The gate comprises a movable barrier, secured storage, an RFID card reader, a first processing unit that processes a set of digits from an RFID credential, generates and transmits a hash value of the set of digits, and transmits a first bin. The gate comprises a memory, having a higher capacity than the secured storage, and a second processing unit, which sends validity information for a plurality of second bins having larger number of digits than the first bin, the validity information indicates which of the plurality of second bins is valid, check if the hash value is member of first list. If the hash value is on the first list, opening of the movable barrier is regulated and if a second bin from the plurality of second bins corresponding to the RFID credential is invalid, opening is denied.