Event-Based Vibration Imaging for High-Resolution Frequency Detection
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Solution Overview
Problem
Existing vibration sensing technologies lack accuracy and spatial resolution, particularly in non-contact methods, making it difficult to detect slow vibrational patterns and monitor multi-part machinery effectively.
Innovation Solution
Implementing an event-based imaging system with pixel-based sensors that use natural or artificial illumination to generate reflections, process frequency with high temporal resolution, and calculate vibrations and amplitudes based on pixel coordinates, while eliminating noise using an event counter and spatial filters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional imaging techniques are used to capture vibrations, then the imaging process is simple and non-intrusive, but the vibrations cannot be detected or measured
Solution Approach 1:
The patent introduces an intermediary substance (such as a fluorescent dye or particulate matter) that interacts with vibrations to convert mechanical energy into detectable signals. This intermediary enables vibration detection without directly measuring the vibration itself, resolving the contradiction between detection capability and system complexity.
Solution Approach 2:
The patent replaces direct mechanical vibration measurement with an optical or electromagnetic detection system. By substituting mechanical measurement methods with optical sensing (e.g., fluorescence imaging, light scattering), the system achieves vibration detection while maintaining relative simplicity and avoiding complex mechanical sensors.
2Measurement precision
If intrusive sensing elements are introduced to detect vibrations, then vibration measurement becomes possible, but the imaging process becomes more complex and may interfere with the object being imaged
Solution Approach 1:
The patent uses an intermediary substance that can be introduced minimally into the object or environment to enable vibration detection. This intermediary acts as a mediator that converts vibrations into detectable signals without requiring complex sensing elements to be integrated into the object itself, thus maintaining ease of operation.
Solution Approach 2:
The patent changes the detection parameter from direct mechanical measurement to optical or electromagnetic parameter measurement. By detecting vibrations through changes in optical properties (e.g., fluorescence intensity, light scattering patterns) rather than mechanical displacement, the system achieves accurate measurement while maintaining operational simplicity.
3Productivity
If existing imaging techniques are applied to vibrating objects, then the imaging process remains straightforward, but the vibrations are not captured or visualized
Solution Approach 1:
The patent introduces an intermediary that couples the vibration source with the imaging system. This intermediary substance responds to vibrations and converts them into optical signals that can be captured by standard imaging devices, thereby preserving vibration information while maintaining imaging efficiency through the use of existing imaging hardware.
Solution Approach 2:
The patent exploits phase transitions or changes in physical state of the intermediary substance in response to vibrations. For example, vibrations may cause the intermediary to switch between different fluorescent states or scattering patterns, allowing vibration information to be encoded in the imaging signal without requiring complex processing.
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 provides accurate detection of vibrational frequencies and amplitudes with high temporal and spatial resolution, enabling early detection of component decay in machinery and improved monitoring of mechanical elements.
Implementation Method 1
imaging systems that detect vibrations by capturing changes in light scattering or reflection from the object's surface
Implementation Method 2
imaging systems that detect vibrations by capturing changes in light scattering or reflection from the object's surface
Data Source
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AI summary
The present disclosure generally relates to systems and methods for imaging and sensing vibrations of an object. In one implementation, a system is provided for detecting vibrations that comprises a sensor with a plurality of pixels, each pixel including at least one photosensitive element. The sensor is configured to output signals related to illumination on each pixel. The system also includes at least one processor configured to receive the output signals from the sensor and detect, based on the output signals, one or more polarities. The at least one processor is also configured to determine timestamps associated with the output signals, analyze the timestamps and the polarities to detect vibrations of an object in the field of view of the sensor, and determine one or more frequencies of the detected vibrations.