LED Lighting Device Object Detection via Emission Reception Mode Switching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Camera-based object recognition systems require sufficient ambient light and are costly, with visibility issues due to contamination or weather conditions, limiting their effectiveness.
Innovation Solution
A method using LED light sources in lighting devices that operate in both emission and reception modes to detect moving objects by reflecting light from passing objects, allowing for object recognition without additional cameras, and enabling continuous light emission to maintain visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If camera-based object recognition systems are used, then object detection can be performed, but sufficient ambient light is required and additional street lighting systems must be used
Solution Approach 1:
The patent combines the lighting function and object detection function into a single integrated system. LED light sources are configured to operate in both emission mode (providing illumination) and reception mode (detecting reflected light from objects). This merging eliminates the need for separate cameras and ambient lighting systems, as the same LED components perform both functions.
Solution Approach 2:
The LED light sources are designed with multi-functionality, serving dual purposes: emitting light for illumination and receiving reflected light for object detection. By making the lighting device universal, the system can perform both illumination and object recognition tasks without requiring additional specialized components, thereby reducing system complexity and cost.
2Measurement precision
If camera-based object recognition systems are used, then objects can be recognized, but high cost and dependence on clearest visibility are incurred
Solution Approach 1:
The patent merges the lighting device with object detection functionality, eliminating the need for separate expensive camera systems. The same LED components that provide illumination also detect objects by receiving reflected light, significantly reducing system cost and complexity while maintaining object recognition capability.
Solution Approach 2:
The lighting device performs self-service by using its own emitted light for detection purposes. The LED light sources emit light and then detect the reflected light from objects, making the system self-sufficient without requiring external cameras or additional sensing components. This self-service approach reduces dependency on external systems and simplifies the overall architecture.
3Measurement precision
If LED light sources operate in reception mode during emission mode, then reflected light from moving objects can be detected, but light emission must be interrupted or reduced
Solution Approach 1:
The LED light sources operate in periodic cycles, alternating between emission mode and reception mode. During emission mode, LEDs provide illumination; during reception mode, LEDs detect reflected light from moving objects. This periodic switching enables both functions to be performed sequentially, with the temporal profile of the received signal used to infer object passage and characteristics.
Solution Approach 2:
The system dynamically switches the operational state of LED light sources between emission and reception modes based on detection requirements. The assignment of LEDs to different modes can be varied over time, allowing flexible adaptation between providing illumination and detecting objects, with the ability to adjust the duration and frequency of each mode as needed.
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
Enables efficient object recognition with sufficient light, reducing costs and dependency on ambient conditions, while allowing for real-time tracking and traffic analysis by distributing LED light sources along roads and tunnels.
Implementation Method 1
converting light incident on the LED light sources into an electrically measurable signal
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a method for object-recognizing operation of a lighting device (1) and a lighting device (1) for recognizing moving objects (2).