Vehicle Onboard Device Power Control by Application Manifest
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Solution Overview
Problem
Existing onboard devices in vehicles suffer from high power consumption due to unnecessary activation when not used by operating applications.
Innovation Solution
An onboard apparatus with a device connection unit, apparatus state management unit, application execution unit, and device power management unit manages power states based on device usage information in a manifest, ensuring only necessary devices are activated for operating applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If onboard devices are activated to ensure availability for all possible applications, then application execution reliability is improved, but power consumption increases
Solution Approach 1:
The system dynamically adjusts the power state of onboard devices based on real-time application execution requirements. The device power management unit continuously monitors which devices are needed for currently executing applications and transitions devices between on-state and off-state accordingly, ensuring devices are activated only when required rather than remaining permanently active.
Solution Approach 2:
The manifest files associated with each application self-describe the device usage requirements. When an application is executed, the system automatically retrieves the manifest to determine which devices should be activated, eliminating the need for manual configuration or external intervention to manage device power states.
2Adaptability or versatility
If multiple onboard devices are kept in on-state for potential application use, then application versatility is improved, but energy loss increases
Solution Approach 1:
The system performs preliminary configuration by associating manifest files with each application that pre-specify the device usage requirements. Before application execution begins, the device power management unit already has the necessary information from the manifest to determine which devices should be activated, enabling immediate and accurate device power state management without trial-and-error activation.
3Use of energy by moving object
If device power state is managed dynamically based on application requirements, then power consumption is reduced, but device complexity increases
Solution Approach 1:
The manifest file serves as an intermediary between the application and the device power management system. The manifest contains pre-defined device usage information that mediates the communication between the application's requirements and the power management unit's control actions, simplifying the overall system architecture by decoupling application logic from power management logic.
Data Source
AI summary
An onboard apparatus mounted on a vehicle is configured to connect a plurality of onboard devices mounted on the vehicle, manage an apparatus power state of the onboard apparatus, install a plurality of applications and execute the applications installed, and manage a device power state of the onboard devices connected to the device connection unit. An on state is defined as a state in which power is supplied. The device power management unit, based on device usage information in a manifest in which the device usage information indicating the onboard device used by an installed application is set, sets an onboard device necessary for the installed and operating application to execute processing to a device on state, which is the on state of the onboard device.