Abnormality Detection Apparatus for Lighting Devices
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing abnormality detection systems for lighting devices struggle to accurately detect issues regardless of time range and surrounding environment, particularly due to the influence of external light sources.
Innovation Solution
An abnormality detection apparatus equipped with sensors and a control device that detects physical quantities during both on and off states of the lighting device, subtracting external light influences to determine anomalies, using illuminance or color sensors to monitor changes and provide notifications for maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If human visual checking is used to detect abnormalities of lighting devices, then the detection method is simple and requires no additional equipment, but it is difficult to recognize subtle changes in light during on state and cannot detect abnormalities before breakdown
Solution Approach 1:
The patent replaces human visual checking with an illuminance sensor that automatically measures light intensity. The control device compares the illuminance when the lighting device is on versus when it is off to detect abnormalities, eliminating the need for human inspection while achieving precise detection of subtle light changes.
Solution Approach 2:
The patent introduces an illuminance sensor as an intermediary device to objectively measure light intensity. The sensor acts as a mediator between the lighting device and the detection system, providing quantifiable data that the control device uses to determine abnormalities, thereby achieving accurate detection without human involvement.
2Adaptability or versatility
If camera-based monitoring is used to detect LED abnormalities by recognizing luminance of character patterns, then abnormality detection can be achieved during nighttime, but the method fails when influence of external light (e.g., solar light) is great
Solution Approach 1:
The patent extracts the illuminance measurement function from the camera-based system and uses a dedicated illuminance sensor. By measuring illuminance separately and calculating the difference between on and off states, the system removes the influence of external light sources, enabling accurate detection in various environmental conditions including daytime with strong sunlight.
Solution Approach 2:
The patent changes the detection parameter from camera-based luminance recognition to illuminance sensor measurements. By measuring illuminance values during on and off states and calculating their difference, the system transforms the detection approach to be insensitive to external light conditions, thereby achieving environment-independent abnormality detection.
3Measurement precision
If illuminance sensor is used to detect physical quantity during on state only, then the detection system is simple, but it cannot remove influence of external light and cannot accurately detect abnormalities
Solution Approach 1:
The patent implements periodic measurement by detecting illuminance at two distinct states: when the lighting device is on and when it is off. The control device compares these periodic measurements to calculate the light contribution of the lighting device itself, removing external light influence and enabling accurate abnormality detection without additional sensors.
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 reliable detection of lighting device abnormalities across varying conditions, reducing false positives and ensuring timely maintenance before device failure, regardless of time or environment.
Implementation Method 1
an illuminance sensor that detects an illuminance of the lighting device
Implementation Method 2
a color sensor that detects color information of the light emitted from the lighting device
Data Source
AI summary
An abnormality detection apparatus (100) is configured to detect an abnormality of a lighting device (200). The abnormality detection apparatus (100) includes an illuminance sensor (110), a memory (120) and a controller (130). The controller (130) is configured to detect the abnormality of the lighting device (200) based on a criterion stored in the memory (120) and a difference between an illuminance detected by the illuminance sensor (110) during on state of the lighting device (200) and an illuminance detected by the illuminance sensor (110) during off state of the lighting device (200).