Optical Traffic Preemption Authentication System
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Solution Overview
Problem
Existing optically actuated traffic preemption systems are vulnerable to unauthorized activation due to the widespread availability of high pulse repetition rate strobe emitters, which can be replicated by unauthorized users, posing security and safety concerns for governmental entities.
Innovation Solution
An authentication system is introduced, comprising a remote optical emitter, a remote authentication device, an optical signal processor, and a control authentication device, utilizing RF transceivers and encryption algorithms to verify the authenticity of optical control signals, ensuring only authorized vehicles can activate the traffic preemption system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If optical control signals are transmitted remotely without authentication, then the system is easy to operate and access, but the system becomes vulnerable to unauthorized activation and security breaches
Solution Approach 1:
The patent implements preliminary authentication actions before allowing optical control signals to activate traffic preemption. The system performs challenge-response authentication sequences, verifies serial numbers, and validates passwords in advance, ensuring that only authorized vehicles can activate the system. This preliminary verification mechanism prevents unauthorized activation while maintaining system reliability.
Solution Approach 2:
The patent introduces an intermediary authentication system between the optical emitter and the traffic controller. This intermediary layer includes challenge-response mechanisms, serial number verification, and password validation that mediate between the optical signal and the traffic control function, preventing direct unauthorized access while maintaining ease of operation for authorized users.
2Reliability
If authentication mechanisms are added to verify optical control signals, then unauthorized activation is prevented, but the system complexity and data processing requirements increase
Solution Approach 1:
The patent extracts the authentication data (serial numbers, passwords, challenge-response sequences) into separate verification layers that operate independently from the main optical signal processing path. This extraction allows for efficient verification without overwhelming the primary data processing system, reducing information loss while maintaining security.
Solution Approach 2:
The patent changes parameters of the authentication system by using compact data structures for serial numbers and passwords, optimizing the challenge-response timing, and adjusting verification thresholds. These parameter changes reduce the data processing overhead while maintaining robust security verification.
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
The authentication system securely prevents unauthorized activation by using RF authentication challenge and response signals, encrypting data, and requiring unique serial numbers and passwords, thereby enhancing the security of traffic preemption systems and preventing misuse.
Implementation Method 1
a remote optical emitter transmits an optical control signal from a remote location
Implementation Method 2
utilizing RF transceivers and encryption algorithms to verify the authenticity of optical control signals
Data Source
AI summary
An authentication system authenticates remotely generated optical control signals. A remote optical emitter transmits an optical control signal from a remote location. A remote authentication device collocated with the remote optical emitter receives an authentication challenge signal and transmits a compatible authentication response signal. A control optical signal processor positioned at a first location receives the optical control signal from the remote optical emitter and generates a control output signal in response to detection of a valid optical control signal. An authentication device is coupled by a real time data communications link with the optical signal processor and with the remote optical emitter. The control authentication device receives the control output signal from the optical processor, transmits the authentication challenge signal to the remote authentication device in response to receipt of the control output signal and generates an authenticated control output signal in response to receipt of a valid authentication response signal from the remote authentication device.