Vehicle Control Interface for ADK and Driver Deceleration Blending
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Solution Overview
Problem
The challenge lies in providing an appropriate interface between autonomous driving systems and vehicle platforms, especially when developed by different entities, to ensure seamless integration and control during autonomous driving modes.
Innovation Solution
A vehicle platform with a vehicle control interface that integrates an autonomous driving system, capable of receiving deceleration requests from both the driver and the autonomous system, and specifying a combined target deceleration during autonomous modes, ensuring compatibility and redundancy in control systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an autonomous driving system is mounted externally on a vehicle platform, then the system can be integrated with the vehicle, but it becomes difficult to provide an appropriate interface between the autonomous driving system and the vehicle platform when developed by different entities
Solution Approach 1:
The patent creates a universal interface between the autonomous driving system and vehicle platform that allows different developers to communicate effectively. The interface uses standardized protocols and common parameter definitions (such as deceleration requests, vehicle states, and control commands) that work across different system implementations, enabling one interface to serve multiple different autonomous driving systems and vehicle platforms.
2Reliability
If the vehicle platform receives deceleration requests from both the driver and autonomous driving system, then comprehensive control is achieved, but it becomes challenging to integrate and coordinate multiple control sources
Solution Approach 1:
The patent merges multiple deceleration requests from different sources (driver input via brake pedal and autonomous driving system commands) into a unified control output. The vehicle platform integrates these separate control inputs through a coordinated processing mechanism that combines them appropriately, allowing comprehensive control while managing the complexity of coordinating multiple sources.
Solution Approach 2:
The system implements feedback mechanisms where the vehicle platform monitors and coordinates deceleration requests from both the driver and autonomous driving system. By continuously monitoring the state of both control sources and adjusting the integrated output accordingly, the system maintains reliable control while managing the complexity of coordinating multiple inputs.
Data Source
AI summary
A vehicle is a vehicle on which an autonomous driving kit (ADK) is mountable. The vehicle includes: a vehicle platform (VP) that controls the vehicle in accordance with an instruction from the ADK; and a vehicle control interface that serves as an interface between the ADK and the VP. The VP receives a driver deceleration request in accordance with an amount of depression of a brake pedal by a driver, and receives a system deceleration request from the ADK through the vehicle control interface. During an autonomous mode, the VP specifies the sum of the driver deceleration request and the system deceleration request as a target deceleration of the vehicle.