Automated Display Brightness Fault Detection System
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Solution Overview
Problem
Existing methods for detecting malfunctioning electronic devices with display screens rely on human operators, leading to potential inaccuracies and reduced productivity due to the time-consuming nature of manual monitoring.
Innovation Solution
A fault detection device comprising a sensor, microprocessor, and warning units (LED and buzzer) that monitor and compare brightness values at predetermined intervals to generate warning signals when a display screen's brightness remains unchanged, indicating a potential malfunction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If human operators manually monitor display screens to detect malfunctions, then detection accuracy can be maintained through experience, but productivity decreases due to time consumption and space occupation on the production line
Solution Approach 1:
The patent replaces the mechanical human eye and manual monitoring process with an automated optical detection system comprising a light source, sensor, and microprocessor. The sensor optically detects brightness values of the display screen, and the microprocessor automatically compares consecutive brightness values to identify malfunctions, eliminating the need for human operators while maintaining detection accuracy and increasing productivity
Solution Approach 2:
The detection system performs self-service by automatically monitoring its own operation through continuous brightness value detection and comparison. The microprocessor autonomously determines whether the display screen is malfunctioning by comparing current brightness values with previous values, enabling the system to self-diagnose without external human intervention
2Device complexity
If human operators manually inspect display screens, then detection can be performed without additional equipment, but wrong determinations increase due to human error
Solution Approach 1:
The patent replaces the unreliable human visual inspection system with a reliable automated optical detection system. The sensor objectively measures brightness values, and the microprocessor reliably compares these values using predetermined thresholds, eliminating human error and subjectivity while maintaining relatively simple device architecture through the use of basic optical components
3Productivity
If automated detection systems are implemented, then productivity increases through faster detection, but device complexity increases due to additional components
Solution Approach 1:
The patent segments the detection function into distinct modular components: a light source unit, a sensor unit for brightness detection, and a microprocessor unit for data processing and determination. This segmentation allows each component to perform its specific function efficiently while maintaining overall system simplicity and enabling easy integration into the production line
Solution Approach 2:
The detection device is designed with universal applicability to detect various types of display screen malfunctions through a single standardized system. The microprocessor can be programmed with different detection algorithms and thresholds to handle multiple malfunction scenarios, making the device versatile without requiring complex specialized equipment for each malfunction type
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 solution enables quick and accurate detection of malfunctioning display screens, reducing human error and increasing production efficiency by using automated two-stage warning signals.
Implementation Method 1
The first sensor is arranged in front of a display screen of the display, and obtains and outputs a first current brightness value
Data Source
AI summary
A fault detection device, adapted to an electronic device having a display screen, including a first warning unit, a second warning unit, a first sensor and a microprocessor. The first sensor is arranged in front of the display screen, and obtains and outputs a first current brightness value every first predetermined period of time. The microprocessor is coupled to the first warning unit, the second warning unit, and the first sensor, and compares the first current brightness value with a first previous brightness value. When the first current brightness value is equal to the first previous brightness value, the microprocessor enables the first warning unit to generate a first warning signal. When the first current brightness value is equal to the first previous brightness value for more than a second predetermined period of time, the microprocessor enables the second warning unit to generate a second warning signal.