ECU Connector Switch Detection for Unauthorized Vehicle Devices
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Solution Overview
Problem
Existing unauthorized connection detection methods are ineffective when a device without a communication line is connected to a vehicle's ECU, as they require a communication line for detection, and using RFID tags increases complexity and cost.
Innovation Solution
An unauthorized connection detecting device with a pair of connectors, one with a switch unit and the other with a protrusion or conductor pattern, that allows detection of unauthorized connections without a communication line, using a microcomputer to identify legitimate or unauthorized devices based on the state of the switch or conductor connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RFID tags and readers are used for unauthorized connection detection, then detection capability is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces the RFID electromagnetic field-based detection system with a mechanical switch-based detection system. The protrusion mechanically actuates the switch when the connector is properly inserted, eliminating the need for RFID readers and tags, thereby reducing device complexity and cost while maintaining unauthorized connection detection capability
Solution Approach 2:
The patent uses a simplified mechanical switch response to replicate the detection function of the complex RFID system. Instead of reading RFID tags, the system uses the physical presence or absence of the switch actuation (caused by the protrusion) to determine whether a legitimate device is connected, achieving the same detection purpose with simpler means
2Measurement precision
If communication lines are used for unauthorized connection detection, then detection accuracy is improved, but adaptability to devices without communication lines deteriorates
Solution Approach 1:
The patent creates a universal detection mechanism that works with both devices having communication lines and those without. The mechanical switch and protrusion system can detect unauthorized connections on any device connected through the connector, regardless of whether the device has communication capabilities, thereby achieving broad adaptability while maintaining detection accuracy
Data Source
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AI summary
An unauthorized connection detecting device to detect an unauthorized device connection at a connection part at which an electronic control unit mounted on a vehicle and an input and output unit are connected to each other is provided. The unauthorized connection detecting device includes a pair of connectors having one connector mounted on the electronic control unit and another connector mounted on the input and output unit, the pair of connectors being to be attached to each other, a protrusion or a conductor pattern formed on the another connector, a switch unit arranged on the one connector and to detect the protrusion or a conductor connection detecting unit arranged on the one connector and to be electrically connected to the conductor pattern, and an unauthorized connection identification unit to detect an unauthorized connection based on a state detected by the switch unit or the conductor connection detecting unit.