公开(公告)号：US20200264014A1

公开(公告)日：2020-08-20

申请号：US16793342

申请日：2020-02-18

Applicant: Probe Technology Services, Inc.

Inventor： Marvin Beckman ,  Thientu Ho ,  Loi Tran ,  Mark Hastings ,  Terry Hendrix

IPC: G01D5/22 ,  E21B47/08 ,  E21B47/00

Abstract: A caliper-arm-position sensor comprising a differential variable reluctance transducer (DVRT) and circuits to drive the DVRT with a substantially sinusoidal signal and to sample a signal at the DVRT once per drive-signal cycle at a predetermined position in the drive-signal cycle is disclosed.

公开(公告)号：US11561113B2

公开(公告)日：2023-01-24

申请号：US16793342

申请日：2020-02-18

Applicant: Probe Technology Services, Inc.

Inventor： Marvin Beckman ,  Thientu Ho ,  Loi Tran ,  Mark Hastings ,  Terry Hendrix

IPC: G01D5/22 ,  E21B47/00 ,  E21B47/085

Abstract: A caliper-arm-position sensor comprising a differential variable reluctance transducer (DVRT) and circuits to drive the DVRT with a substantially sinusoidal signal and to sample a signal at the DVRT once per drive-signal cycle at a predetermined position in the drive-signal cycle is disclosed.