The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 26, 2025
Filed:
Dec. 20, 2023
National Taiwan University, Taipei, TW;
National Taiwan University, Taipei, TW;
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.