Vehicle Remote Instruction Timing Synchronization

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Solution Overview

Problem

In vehicle remote instruction systems, there is a deviation in the reflection time of remote instructions on autonomous driving vehicles that does not align with the appropriate external environment, causing discomfort to occupants due to inconsistent timing of instruction implementation.

Innovation Solution

A system that includes a remote instruction point situation recognition unit, a recommended time acquisition unit, and a predicted time calculation unit to synchronize remote instructions with the external environment, using delay or preparation instructions to adjust the reflection time based on predicted and recommended times, and optionally considering commander tendency information and communication delays.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If remote instructions are sent based on autonomous driving vehicle situations, then the vehicle can be controlled appropriately, but the reflection time of instructions may deviate from the most appropriate timing for the external environment

Engineering Contradiction:
Improveinstruction reflection timing accuracyVSAvoidoccupant comfort
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The system performs preliminary actions by calculating the predicted reflection time of remote instructions and comparing it with the recommended time before actually sending the instruction. Based on this comparison, the system proactively issues preparation instructions (when predicted time is later than recommended time) or delay instructions (when predicted time is earlier than recommended time) to ensure the instruction is reflected at the most appropriate time, thereby resolving the timing deviation problem while maintaining occupant comfort

Inventive Principle:
Principle #10Preliminary action

2Stability of the object's composition

If the same remote instruction is issued when the external environment is the same, then consistency is maintained, but the reflection time may vary each time causing discomfort

Engineering Contradiction:
Improveinstruction timing consistencyVSAvoidoccupant comfort
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The system implements feedback by continuously monitoring the relationship between predicted reflection time and recommended time for remote instructions. It uses this feedback information to dynamically adjust the instruction sending strategy, issuing preparation or delay instructions as needed. This closed-loop control ensures that even when the same instruction is issued under similar external conditions, the reflection time consistently aligns with the recommended time, thereby maintaining timing consistency and occupant comfort

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS11215982B2Vehicle remote instruction system
Publication Date: 2022.01.04 TOYOTA JIDOSHA KK
  • US11215982B2 patent drawing
  • US11215982B2 patent drawing
  • US11215982B2 patent drawing

AI summary

A vehicle remote instruction system includes a remote instruction point situation recognition unit that recognizes a remote instruction point situation on a target route based on the target route, position information, and map information, a recommended time acquisition unit that acquires a recommended time based on the remote instruction point situation and a type of a remote instruction, a remote instruction sending unit that sends the remote instruction to an autonomous driving vehicle, and a predicted time calculation unit that calculates a predicted time. The remote instruction sending unit sends a delay instruction to set a reflection time closer to the recommended time when the predicted time is earlier than the recommended time, and sends a preparation instruction to cause the autonomous driving vehicle to behave in response to the type of the remote instruction at an earlier time when the predicted time is later than the recommended time.