Vehicle Wake Mode Control Using Park-and-Zero Validation

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Solution Overview

Problem

Existing vehicles with autonomous driving kits may change power modes inappropriately due to incorrect commands from the autonomous driving kit, leading to potential malfunctions.

Innovation Solution

A vehicle platform that includes a base vehicle and a vehicle control interface box, which communicates with an autonomous driving kit to ensure power mode transitions only occur when the shift lever is in parking and vehicle speed is 0 km/h, preventing inappropriate mode changes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If the power mode is changed based on a command from the autonomous driving kit, then the power mode can be automatically adjusted, but the power mode may be changed in an inappropriate situation due to incorrect commands

Engineering Contradiction:

Improveautomatic power mode adjustmentVSAvoidpower mode change accuracy

Core Design Contradiction:

Extent of automationVSReliability

Solution Approach 1:

The vehicle control interface box receives commands from the autonomous driving kit and validates them against current vehicle state (shift lever position and vehicle speed). This feedback mechanism ensures that power mode changes only occur when appropriate conditions are met, preventing inappropriate mode changes while maintaining automatic control capability

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The vehicle control interface box acts as an intermediary between the autonomous driving kit and the power supply system. It receives wake commands from the autonomous driving kit, validates them against vehicle state conditions, and only executes power mode changes when conditions are satisfied, thus mediating between automated commands and safe execution

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If all control devices are powered on in driving mode, then full functionality is available, but energy consumption increases

Engineering Contradiction:

Improvecontrol device functionalityVSAvoidpower consumption

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The power supply system dynamically adjusts the power state of control devices based on the current power mode (sleep, wake, or driving mode). In sleep mode, most control devices are powered off to reduce energy consumption. When a wake command is received and conditions are met, the system transitions to wake mode and powers on necessary control devices, providing full functionality only when needed

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS20250388214A1Vehicle including a vehicle platform that transitions to a wake mode according to a wake command

Publication Date: 2025.12.25 TOYOTA JIDOSHA KK

AI summary

The vehicle includes a vehicle platform configured to receive commands related to autonomous driving from the autonomous driving kit. The autonomous driving kit is configured to transmit a wake command to the vehicle platform requesting transition of the power mode of the vehicle platform to the wake mode. The vehicle platform transitions to the wake mode by the wake command only when the propulsion direction status indicates parking and the vehicle speed is 0 km/h.