Autonomous Driving Sensor Failure Control With Server Virtual Data
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Solution Overview
Problem
Autonomous driving systems face challenges when one of the multiple sensors fails, leading to reduced data accuracy and potential safety issues, as existing solutions either stop the system or disrupt traffic flow.
Innovation Solution
A vehicle control apparatus that includes a sensor device, a failure determination device, a communication device, and an autonomous driving controller, which identifies failed sensors, transmits data to a server, receives virtual data, and performs autonomous driving control using this data to ensure safe vehicle operation, such as stopping at a designated position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the autonomous driving system stops operation when a sensor fails, then the safety and reliability of the system is improved, but the productivity and continuity of driving is worsened
Solution Approach 1:
The patent creates virtual sensor data as a copy or substitute for the failed physical sensor data. The server generates virtual data that replicates the functionality of the failed sensor, allowing the autonomous driving system to continue operating without stopping, thus resolving the contradiction between safety and continuity of driving.
Solution Approach 2:
The patent introduces a server as an intermediary between the failed sensor and the autonomous driving controller. The server receives data from other sensors, processes it to generate virtual sensor data, and provides this to the controller, enabling the system to maintain operation despite sensor failure.
2Productivity
If the autonomous driving system continues operation with faulty sensor data, then the productivity and continuity of driving is improved, but the measurement precision and reliability are worsened
Solution Approach 1:
The system generates virtual sensor data as a precise substitute for the failed sensor's data. This virtual data is created through processing information from other functional sensors and the server's computational capabilities, maintaining measurement precision while enabling continuous operation.
Solution Approach 2:
The patent changes the source and form of sensor data by transforming data from other sensors into virtual data that represents the failed sensor's measurements. This parameter transformation allows the system to maintain accurate measurement information even when the original sensor is malfunctioning.
3Reliability
If the system uses virtual data from a server, then the adaptability and reliability of autonomous driving is improved, but the device complexity and loss of time for data transmission are worsened
Solution Approach 1:
The server acts as an external intermediary that handles the complexity of virtual data generation, keeping the in-vehicle system relatively simple. The vehicle's communication device and controller work with the server but don't need to contain the complex processing logic themselves, balancing reliability improvement with acceptable device complexity.
Solution Approach 2:
The patent moves the complex data processing function from the vehicle's internal system to an external server dimension. This spatial and functional separation allows the vehicle system to maintain simpler architecture while still benefiting from sophisticated virtual sensor data generation capabilities.
Data Source
AI summary
A vehicle control apparatus includes a sensor device including a plurality of sensors, a failure determination device that monitors the plurality of sensors at preset periods, identifies a failed sensor among the plurality of sensors, and determines transmission data to be transmitted to a server using faulty data obtained by the failed sensor, a communication device that transmits the transmission data to the server and receives virtual data generated by the server in correspondence with the transmission data from the server, and an autonomous driving controller that performs autonomous driving control for a host vehicle using at least one of the virtual data, the transmission data, or any combination thereof.