LiDAR Power Mode Switching for Precision-Energy Balance
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Solution Overview
Problem
The challenge of reducing power consumption in LiDAR devices, particularly in autonomous vehicles, is significant due to their use in electric vehicles and smart infrastructure, where energy efficiency is crucial.
Innovation Solution
A LiDAR device equipped with a smart power management system that operates in multiple modes, switching between high-resolution and low-power consumption modes based on vehicle states, and adjusts sampling periods and emitter activation to optimize energy use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the LiDAR device operates in high-resolution first operation mode, then measurement precision is improved, but power consumption increases
Solution Approach 1:
The LiDAR device dynamically switches between first operation mode (high-resolution) and second operation mode (low-power) based on real-time vehicle state changes. The controller adjusts the operation mode according to whether the vehicle is moving or stationary, optimizing the balance between measurement precision and power consumption
Solution Approach 2:
The system changes operational parameters by switching between different operation modes. In the first operation mode, the LiDAR operates with higher resolution settings, while in the second operation mode, it reduces power consumption by adjusting sampling frequency and laser emission parameters
2Loss of energy
If the LiDAR device operates in second operation mode with lower power consumption, then energy efficiency is improved, but measurement precision decreases
Solution Approach 1:
The system dynamically adapts its operation mode based on vehicle state. When the vehicle is stationary or in low-activity states, it operates in the second operation mode with reduced power consumption. When motion is detected or high-precision measurement is required, it switches to the first operation mode
Solution Approach 2:
The LiDAR device employs periodic sampling in the second operation mode, where the controller selectively activates emitters at different time intervals. This periodic operation reduces average power consumption while maintaining adequate measurement capability for stationary conditions
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach effectively reduces power consumption while maintaining data accuracy, enhancing the energy efficiency of LiDAR devices in various applications.
Implementation Method 1
an emitting unit configured to emit laser
Implementation Method 2
a light detection and ranging (LiDAR) has been in the spotlight. The LiDAR is a device that obtains information on near distances using a laser
Data Source
AI summary
a LiDAR device including a laser emitting unit configured to emit laser, a laser detecting unit configured to detect laser emitted from the laser emitting unit and a controller configured to operate the LiDAR device in a first operation mode and a second operation mode in which a power consumption per unit time is lower than a power consumption per unit time of the first operation mode.