Transparent Substrate Damage Detection via Optical Signal
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Solution Overview
Problem
Outdoor digital signage faces challenges in detecting and reporting damage to its housing, particularly the transparent substrate, due to its exposure to harsh environments, making rapid maintenance difficult and remote monitoring impractical.
Innovation Solution
A display apparatus equipped with a transmitter and receiver system on the transparent substrate, using light signals to detect damage, combined with a control unit that determines substrate integrity and communicates damage notifications to managers through a network, along with a camera for capturing and storing images for remote monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If digital signage is installed outdoors for advertising, then it can display information in public spaces, but it becomes vulnerable to environmental damage and difficult to maintain
Solution Approach 1:
The patent installs transmitters and receivers on the housing to perform preliminary damage detection before actual damage occurs or immediately upon damage. The system continuously monitors the housing state and can detect cracks or damage in the transparent substrate through light transmission changes, enabling early warning and rapid response
2Reliability
If the transparent substrate is damaged, then maintenance is required, but outdoor installation makes rapid repair difficult
Solution Approach 1:
The patent implements a feedback mechanism where receivers detect light transmission changes through the transparent substrate and send signals to a control unit. When damage is detected, the system generates an alarm signal that can be remotely monitored, providing continuous feedback on substrate condition without requiring physical inspection
3Measurement precision
If damage detection is implemented manually, then it can identify housing damage, but it requires physical inspection and is not suitable for remote monitoring
Solution Approach 1:
The patent replaces manual mechanical inspection with an optical detection system. Transmitters emit light through the transparent substrate and receivers detect changes in light transmission. This optical system automatically detects damage without requiring physical contact or manual inspection, enabling remote monitoring through electronic signal transmission
4Difficulty of detecting and measuring
If transmitters and receivers are installed on the transparent substrate, then damage can be detected through light transmission, but the system complexity increases
Solution Approach 1:
The patent integrates the transmitter and receiver system into the existing digital signage housing structure. The same transparent substrate that serves as the display surface also functions as the detection medium. The control unit can simultaneously manage display operations and damage detection, making the system multi-functional without proportionally increasing complexity
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 immediate and remote detection of housing damage, facilitating rapid maintenance and ensuring continuous operation of outdoor digital signage by alerting managers promptly and providing visual evidence for assessment.
Implementation Method 1
The signal of the light passes through the transparent substrate in the first direction and is received by the receiver
Implementation Method 2
the first reflective film reflects at least light in the same wavelength band as the light
Implementation Method 3
the polarization filter selectively transmitting only a component of light which vibrates in a thickness direction of the front substrate
Data Source
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AI summary
Provided is a display apparatus (100) including: a display module; a housing (130) accommodating the display module; a transparent substrate (131) disposed on a front surface of the display module and installed in the housing; a transmitter disposed on one end of the transparent substrate and generating light; a receiver installed on the other end of the transparent substrate to face the transmitter in a first direction, and receiving the light emitted from the transmitter; and a receiver installed on the other end of the transparent substrate to face the transmitter in a first direction , and receiving the light emitted from the transmitter; and a control unit driving the display module, and determining whether the transparent substrate is damaged based on a signal received from the receiver.