Vehicle ECU Pre-Booting for Faster In-Car Interface Startup
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Modern vehicles equipped with numerous electronic control units (ECUs) face challenges in achieving near-instantaneous startup, as existing architectures require ECUs to start from a powered-off state only in response to vehicle startup.
Innovation Solution
A pre-booting procedure is implemented to speculatively boot ECUs based on detected conditions, such as door unlock signals or changes in vehicle occupancy, allowing for improved startup times and a perceived 'instant on' effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If ECUs are started from a powered-off state only in response to vehicle startup, then power consumption is reduced and system simplicity is maintained, but startup time increases and responsiveness deteriorates
Solution Approach 1:
The system performs preliminary booting actions on ECUs before the vehicle is actually started. A pre-booting ECU detects conditions indicating imminent vehicle startup (such as door unlock signals, key detection, or occupancy sensors) and initiates booting sequences for other ECUs in advance. This preliminary action allows ECUs to be ready before the driver actually enters or starts the vehicle, achieving near-instantaneous responsiveness without requiring ECUs to remain continuously powered.
Solution Approach 2:
The system dynamically adjusts ECU power states based on predicted user needs and vehicle conditions. Rather than using a static power-off state for all ECUs, the system transitions ECUs between different power states (fully powered off, pre-booted standby, and fully operational) based on real-time conditions. This dynamic approach allows the system to optimize between power consumption and startup speed by adapting ECU states to actual usage patterns and predicted driver actions.
2Speed
If multiple ECUs are kept in standby mode to enable fast startup, then startup responsiveness is improved, but power consumption increases
Solution Approach 1:
The system performs preliminary booting actions on ECUs before the vehicle is actually started. A pre-booting ECU detects conditions indicating imminent vehicle startup (such as door unlock signals, key detection, or occupancy sensors) and initiates booting sequences for other ECUs in advance. This preliminary action allows ECUs to be ready before the driver actually enters or starts the vehicle, achieving near-instantaneous responsiveness without requiring ECUs to remain continuously powered.
Solution Approach 2:
The system uses periodic monitoring of trigger conditions (door locks, key presence, occupancy) to determine when to initiate pre-booting sequences. Rather than keeping ECUs in a continuous intermediate state, the system periodically checks for startup indicators and activates pre-booting only when conditions suggest imminent vehicle use. This periodic approach allows ECUs to remain in low-power states most of the time while still achieving fast startup when needed.
Data Source
AI summary
Disclosed are devices and methods for improving the pre-booting of electronic control unit devices in vehicles. In one embodiment, a method is disclosed comprising detecting a triggering of a pre-booting condition based on one or more interactions with a vehicle; transmitting a power-on signal to at least one electronic control unit (ECU) in the vehicle, the at least one ECU operating in a low-power state; and fully booting the at least one ECU upon determining that the vehicle has been started.