Autonomous Vehicle Sensor Standby Control for Faster Restart
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Solution Overview
Problem
Perception devices in autonomous vehicles take a long time to startup and may fail to start up immediately when the vehicle is restarted after being temporarily stopped to conserve energy.
Innovation Solution
A perception device that includes a perception unit, an obtaining unit, and an operation control unit to manage its state based on detection results and supply/instruction information, allowing it to transition between perception, standby, and stop states to minimize startup time and energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the perception device transitions to the stop state to conserve energy when the vehicle is temporarily stopped, then energy consumption is reduced, but the startup time becomes excessively long
Solution Approach 1:
The perception device performs preliminary actions by transitioning to a standby state instead of fully stopping, maintaining partial operational readiness. This preliminary preparation allows the device to quickly activate perception functions when the vehicle restarts, avoiding the long startup time associated with complete stops while still reducing energy consumption compared to continuous operation.
2Loss of time
If the perception device remains in the perception state during temporary vehicle stops, then the startup time is minimized, but energy consumption increases
Solution Approach 1:
The system dynamically adjusts the perception device state based on vehicle operation status. During temporary stops, the device transitions to a standby state that is dynamically positioned between the full perception state and complete stop state, allowing flexible adaptation to different stop durations and vehicle conditions to optimize the balance between startup time and energy consumption.
3Use of energy by moving object
If the perception device transitions to the standby state after stopping, then energy consumption is reduced, but the responsiveness to restart commands is delayed
Solution Approach 1:
The standby state serves as a preliminary intermediate state that prepares the perception device for quick activation. By maintaining certain subsystems in a ready condition during the standby state, the device can rapidly transition to full perception mode when needed, achieving both energy savings and acceptable responsiveness.
Data Source
AI summary
A perception device includes a perception unit configured to perceive surroundings of a moving body based on a detection result of a detection unit, an obtaining unit configured to obtain supply information and instruction information indicating an instruction for an operation to the moving body, and an operation control unit configured to control a state of the perception device. The perception device is in a perception state in which the perception device perceives the surroundings, in a stop state or in a standby state. When the instruction information obtained in the perception state indicates the instruction for stopping the operation of the moving body, the operation control unit keeps the state of the perception device in the perception state without transitioning to the stop state or causes the state of the perception device to transition to the standby state.