Load Signal Validation in Drive Control for Unauthorized Transition Prevention
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Solution Overview
Problem
Existing drive systems face challenges in preventing unauthorized transitions due to falsification of load control signals without performing complex authentication and encryption processes, which can increase costs and reduce communication speed.
Innovation Solution
A drive device and system that includes a receiving unit for load control signals, a control storage unit, a drive unit for semiconductor switches, an acquisition unit for current drive states, and a determination unit that compares the received load control signal with a transition determination value to identify abnormal signals, preventing prohibited transitions without complex processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex authentication and encryption processes are implemented to prevent signal falsification, then security against unauthorized transitions is improved, but device complexity and cost increase
Solution Approach 1:
The patent applies preliminary action by pre-storing valid transition determination values in the determination value storage unit before runtime. These values represent legitimate state transitions, allowing the system to quickly validate incoming signals against known-good patterns without performing complex authentication or encryption during operation. This pre-computation approach eliminates the need for runtime cryptographic verification while maintaining security.
Solution Approach 2:
The patent uses copying by creating and storing copies of valid transition determination values in advance. Instead of generating or verifying cryptographic authentication data in real-time, the system stores multiple copies of predetermined valid transition patterns and simply compares incoming signals against these stored copies. This copying mechanism provides security through pattern recognition rather than computational authentication.
2Reliability
If complex authentication and encryption processes are implemented to prevent signal falsification, then security against unauthorized transitions is improved, but communication speed decreases
Solution Approach 1:
By pre-storing valid transition determination values before communication occurs, the system eliminates runtime cryptographic processing. The determination unit performs only simple comparison operations against pre-computed values, maintaining high communication speed while providing security through predetermined validation patterns.
Solution Approach 2:
The system stores copies of valid transition patterns and uses direct comparison against these copies instead of performing encryption/decryption operations. This copying approach reduces communication overhead and maintains speed while achieving security through pattern matching rather than computational verification.
3Reliability
If complex authentication and encryption processes are implemented to prevent signal falsification, then security against unauthorized transitions is improved, but system size and power consumption increase
Solution Approach 1:
The system performs the computationally intensive work of determining valid transition patterns in advance, storing only the results rather than the algorithms needed to generate them. During operation, the determination unit requires minimal processing power to compare incoming signals against stored values, dramatically reducing power consumption compared to runtime cryptographic verification.
Solution Approach 2:
By storing copies of valid transition determination values instead of implementing runtime authentication algorithms, the system reduces both hardware complexity and power consumption. The determination unit performs simple comparison operations that consume minimal energy compared to encryption/decryption processes.
Data Source
AI summary
A drive device includes: a receiving unit of a load control signal indicative of a drive state of each load; a control storage unit of the load control signal; a drive unit of the switches according to the load control signal; an acquisition unit of a current drive state of each load at a present time, or a current vehicle state; a determination storage unit of a transition determination value; and a determination unit that compares a correlated drive state of each load correlated with the load control signal with the transition determination value, and determines that the load control signal is abnormal when the correlated drive state and the transition determination value satisfy a predetermined corresponding relationship.