Vehicle Power Switching for Faster Drive System Startup
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Solution Overview
Problem
Existing vehicle control systems require lengthy processing times before starting up devices, leading to low response performance.
Innovation Solution
A vehicle control device with a switch unit that can switch between power supply states, controlled by a switch control unit and an event detection unit, allowing immediate power supply to drive system devices upon detection of specific events.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If processing such as collation or authentication is required before starting the device mounted on the vehicle, then security is improved, but the time until the device is started up increases
Solution Approach 1:
The switch control unit switches the switch unit to the on state in advance upon detection of a specific event (such as door opening or ignition request), before the authentication processing is completed. This preliminary power supply preparation reduces the overall startup time while security is maintained through the subsequent authentication process. The system performs the power supply switching action beforehand, rather than waiting for all authentication steps to complete first.
2Reliability
If processing is completed before starting the device, then security and operability are improved, but response performance deteriorates
Solution Approach 1:
The system performs preliminary action by switching the power supply to the on state upon detection of a specific event, before the authentication processing is fully completed. This allows the device to be in a ready state more quickly, improving response performance while maintaining security through the authentication process. The switch control unit anticipates the need for power supply by detecting events that precede the actual startup requirement.
3Reliability
If the switch unit is switched to on state with reception of on control signal, then security is maintained, but startup time increases
Solution Approach 1:
The switch control unit performs preliminary action by switching the switch unit to the on state upon detection of a specific event, which occurs before the authentication processing is completed and before the on control signal would normally be issued. This time-based preliminary action maintains security because the actual device operation still requires successful authentication, but it reduces the perceived startup time by having power supply ready in advance.
Data Source
AI summary
A vehicle control device, including: a switch unit that disconnects power supply to at least one of a drive system device involved in driving of a vehicle and a drive control unit that controls the drive system device; a switch control unit that controls the switch unit; and an event detection unit that detects an occurrence of a specific event in the vehicle, wherein the switch unit is capable of switching between an on state for performing the power supply and an off state for stopping the power supply, and the switch control unit switches the switch unit to the on state with reception of an on control signal from a control device as a trigger, and switches the switch unit to the on state without receiving the on control signal, when the specific event occurs.