Digital, self-diagnosis, sensing intelligent layer integrating active and passive monitoring and method
US12000799B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2023 |
| Grant date | Jun 4, 2024 |
| Priority date | — |
| Expiry date | Dec 29, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N29/4436
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A digital, self-diagnosis, sensing intelligent layer integrating active and passive monitoring, including: a capacitance testing unit, configured to charge a to-be-tested piezoelectric transducer by generating a step signal, and determine a transition moment, to obtain a free capacitance value of the to-be-tested piezoelectric transducer; a frequency testing unit, to charge the to-be-tested piezoelectric transducer by generating sinusoidal signals of different frequencies, and detect a resonant frequency according to the transition moment; an active and passive monitoring module, to obtain analog response signals in an active mode and a passive mode, and convert the analog response signals into digital response signals for transmission; and a main control module, to transmit a self-diagnosis result and the digital response signals to a guided wave host. The intelligent layer integrates active damage scanning and passive impact monitoring while implementing self-diagnosis for a piezoelectric transducer state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.