Information acquisition device and information acquisition method for pulsating voltage
US12399200B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2023 |
| Grant date | Aug 26, 2025 |
| Priority date | — |
| Expiry date | May 20, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R19/255
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides an information acquisition device and method for a pulsating voltage. The device uses a signal isolation circuit to receive a switch-controlling voltage of a motor driver and outputs a logic voltage. When a signal processing module receives the logic voltage from the signal isolation circuit, the signal processing module starts a counter and determines whether a rising or falling edge is present in the logic voltage. When determining that a first rising edge, a first falling edge, and a second rising edge are respectively present in the logic voltage, the signal processing module respectively stores a value of the counter as a first counter value, a second counter value, and a third counter value, and proceeds to calculate a voltage duty cycle of a motor-switching period based on the counter values. The present invention calculates the voltage duty cycle with improved accuracy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.