Vehicle Controller Failure Detection via Communication Module Merging
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Solution Overview
Problem
Current autonomous driving systems lack a solution for safely transferring control to a driver when a communication module fails, as existing studies require separate modules for failure detection, which is not feasible.
Innovation Solution
A vehicle system with first and second controllers, sensors, and a communicator that can detect failures within the controllers and communication module without additional modules, allowing for safe transfer of control to the driver by stopping control signals and outputting warning signals when failures occur.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate modules including a communication module are used to implement failure detection functions, then the reliability of failure detection is improved, but the device complexity increases
Solution Approach 1:
The patent combines the failure detection function with the existing communication module, eliminating the need for separate detection modules. The communication module simultaneously performs its primary function of data transmission and the additional function of detecting communication failures, thereby improving reliability without increasing device complexity
Solution Approach 2:
The communication module is designed to serve multiple purposes: it acts as both a data transmission channel and a failure detection mechanism. By making the communication module universal, the system achieves reliable failure detection while avoiding the addition of dedicated separate modules, thus resolving the contradiction between reliability and complexity
2Reliability
If the autonomous driving system stops transmitting control signals when failure is detected, then the safety of vehicle operation is improved, but the productivity of autonomous driving function decreases
Solution Approach 1:
The system dynamically adjusts its operation based on failure detection results. When communication failures are detected, the system automatically transitions from autonomous control mode to a state where control signals are stopped and driver takeovers are requested. This dynamic response ensures safety while maintaining productivity by resuming autonomous function once communication is restored
Solution Approach 2:
The system implements a feedback mechanism where the communication module continuously monitors its own status and provides failure information back to the control system. This feedback loop enables the system to automatically stop control signal transmission when failures occur and to potentially resume operations when communication is restored, balancing safety and productivity
Data Source
AI summary
A vehicle can safely transfer the control of a vehicle to a driver when a fault occurs in an autonomous navigation system. In particular, the vehicle includes: a first sensor to obtain front information of the vehicle; a second sensor to acquire peripheral information of the vehicle; a first controller to perform an autonomous driving function based on the front information; a second controller to perform the autonomous driving function based on the obtained front information and the peripheral information; and a communicator to transmit the front information and the peripheral information to the second controller. The first controller may stop the transmission of a control signal of the first controller when a failure has occurred in the first controller, and the second controller may stop the transmission of a control signal of the second controller when a failure occurs in the second controller.