Patents by Inventor Kimmo TÖRMÄLEHTO

Kimmo TÖRMÄLEHTO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Continuous monitoring of drive amplitude in vibrating microelectromechanical gyroscopes
    Patent number: 10520313
    Abstract: The disclosure relates to a microelectromechanical gyroscope comprising at least one mass element, a drive actuator and sense electrodes. The at least one mass element is configured to be driven by the drive actuator into oscillating movement with a drive oscillation frequency ?D, and the sense electrodes are configured to produce a sense signal from the oscillating movement of the at least one mass element. The gyroscope control circuit comprises an amplitude detection unit which detects a sense signal amplitude at the frequency 2?D. This amplitude yields a measure of drive oscillation amplitude. Amplitude detection at the frequency ?D yields a measure of angular rotation rate.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: December 31, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Kimmo Törmälehto
  • CONTINUOUS MONITORING OF DRIVE AMPLITUDE IN VIBRATING MICROELECTROMECHANICAL GYROSCOPES
    Publication number: 20170343351
    Abstract: The disclosure relates to a microelectromechanical gyroscope comprising at least one mass element, a drive actuator and sense electrodes. The at least one mass element is configured to be driven by the drive actuator into oscillating movement with a drive oscillation frequency ?D, and the sense electrodes are configured to produce a sense signal from the oscillating movement of the at least one mass element. The gyroscope control circuit comprises an amplitude detection unit which detects a sense signal amplitude at the frequency 2?D. This amplitude yields a measure of drive oscillation amplitude. Amplitude detection at the frequency ?D yields a measure of angular rotation rate.
    Type: Application
    Filed: May 4, 2017
    Publication date: November 30, 2017
    Inventor: Kimmo TÖRMÄLEHTO