Suspended Projector Vibration Monitoring for Mount Loosening Detection
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Solution Overview
Problem
Existing projector systems fail to detect early changes in the installation state, particularly when used in a suspended posture, due to the difficulty in detecting small variations in the installation state without significant changes.
Innovation Solution
A projector system equipped with a vibration generation device, a vibration detection device, and a reporting device that compares detected vibrations with reference values to determine if a reporting condition is satisfied, allowing for early detection of changes in the installation state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a sensor detects pressure change, contact state, or distance change to determine suspended state, then the projector can detect changes in installation state, but the detection is difficult when only small changes occur in the installation state
Solution Approach 1:
The patent applies mechanical vibration by generating a vibration signal through the vibration generation device and detecting it through the vibration detection device. This vibration-based approach enables the system to sense subtle changes in the installation state of the projector, such as minor shifts in position or loosening of attachment members, which cannot be detected by traditional pressure or distance sensors. The vibration signal amplifies the detection capability for small variations by converting them into measurable oscillation changes.
2Adaptability or versatility
If the projector is used in a suspended posture with an attachment member, then the projector can be installed on a ceiling or wall, but the projector may come off the attachment member due to deterioration with time
Solution Approach 1:
The patent implements preliminary action by continuously monitoring the vibration characteristics of the attachment member and projector assembly from the beginning of use. The system compares current vibration detection values with reference values stored in memory to detect early signs of attachment deterioration. This continuous, proactive monitoring allows the system to identify potential attachment failures before they occur, enabling timely warnings or adjustments to prevent the projector from coming off the attachment member.
Solution Approach 2:
The patent employs feedback by continuously comparing the vibration detection values with the reference values and providing real-time information about the attachment state. The control unit processes the vibration data, determines whether the attachment is within acceptable parameters, and can trigger warnings or alerts when deterioration is detected. This closed-loop feedback system maintains awareness of the attachment's condition over time, allowing for proactive maintenance and preventing detachment.
3Measurement precision
If a vibration generation device and vibration detection device are added to detect installation state changes, then early detection of installation state changes is enabled, but the device complexity increases
Solution Approach 1:
The patent applies self-service by having the projector system itself generate and detect the vibrations using integrated vibration generation and detection devices. The system uses its own operational vibrations (such as those from the projection mechanism) as the detection signal, eliminating the need for external vibration sources or complex external sensing systems. This self-contained approach reduces overall system complexity while enabling early detection of installation state changes through the projector's own operational characteristics.
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
The system accurately detects and reports changes in the projector's installation state, ensuring proper support and preventing detachment by identifying subtle shifts in vibration patterns, thereby maintaining stable operation.
Implementation Method 1
a vibration generation device 5 that generates a vibration acting on at least one of the supporting device 2 and the projector 4
Implementation Method 2
a vibration detection device 6 that detects a vibration of the projector 4
Data Source
AI summary
A projector device includes: a projector supported in a suspended state by a supporting device; a vibration generation device that generates a vibration acting on at least one of the supporting device and the projector; a vibration detection device that detects a vibration of the projector; and a reporting device that compares a detection value detected by the vibration detection device with a reference value and gives a report when a reporting condition is satisfied.