Vibration Measurement With Random-Timed Light And Compressed Sensing

The patent combines multiple low-speed cameras to achieve the measurement capability of a high-speed camera. By synchronizing multiple cameras and using compressed sensing algorithms, the system reconstructs high-speed vibration behavior from multiple lower-resolution, lower-speed measurements, effectively merging the capabilities of multiple devices to overcome the limitations of individual cameras.

The patent creates multiple copies of the measurement system using several standard cameras instead of one high-speed camera. These multiple camera copies capture the same vibration event from slightly different temporal perspectives, and the data is processed through compressed sensing to reconstruct the high-speed vibration signal, replacing the need for expensive high-speed camera hardware.

The patent makes a single camera system perform the function of multiple sensors by using compressed sensing to extract information about the entire structure's vibration from one camera's measurements. The system achieves multi-point measurement capability without requiring multiple physical sensors, as the computational method enables the single camera to infer the vibration state across the whole structure.

The patent replaces the mechanical system of multiple physical sensors with an optical and computational system. Instead of attaching multiple acceleration sensors to different locations, the system uses a single camera to capture optical information and applies compressed sensing algorithms to reconstruct the vibration behavior of the entire structure, substituting mechanical sensor arrays with an optical-computational approach.

The patent replaces mechanical contact sensors with a non-contact optical measurement system. The camera captures the vibration behavior of the structure through optical means without any physical attachment, thereby eliminating the mass loading and constraint effects that acceleration sensors impose on the structure. This allows measurement of the structure's natural vibration behavior without modification.

The patent introduces light as an intermediary between the camera and the structure. Instead of direct mechanical contact between sensors and the structure, the measurement is performed through optical interaction where light reflects off the structure's surface, carrying vibration information to the camera without physically disturbing the structure's dynamic characteristics.