Vibration Sensor Fastening State Detection Looseness Index

The patent extracts only the essential feature needed for detection - the difference in vibration characteristics between fastened and loose states - without performing complete frequency domain transformation. By taking out only the necessary vibration frequency information rather than converting entire signals, the system achieves detection capability while avoiding high computational resource consumption associated with full FFT processing.

The patent performs preliminary action by pre-establishing the reference vibration characteristics of properly fastened bolts during system initialization or manufacturing. This baseline data is stored and used for comparison during operation, eliminating the need for continuous data collection and model building. The preliminary establishment of reference standards enables reliable detection without requiring extensive ongoing data accumulation.

The patent implements self-service by enabling the bolt fastening system to automatically monitor its own state through integrated vibration sensors. The system performs self-diagnosis by comparing current vibration characteristics against reference data, eliminating the need for external manual inspection. This autonomous monitoring maintains low system cost while dramatically improving inspection efficiency and enabling continuous surveillance.

The patent applies partial action by deploying vibration sensors at only the critical bolt locations that most significantly affect structural integrity, rather than installing sensors at every possible monitoring point. This selective placement achieves adequate monitoring coverage for safety-critical areas while minimizing the total number of sensors required, thereby reducing overall power consumption and system cost.