公开(公告)号：US12228432B2

公开(公告)日：2025-02-18

申请号：US18460915

申请日：2023-09-05

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Lichang Cheng ,  Zichen Qiu ,  Songhua Hu ,  Yang Li

IPC: G01D5/241 ,  G01R27/26

Abstract: An apparatus is provided and includes a rotary encoder that comprises a stator, a rotor, and a controller. The stator has an opening adapted to surround a first portion of a rotatable shaft, a transmit region, and a receive region. The rotor has an opening adapted to surround a second portion of the rotatable shaft, an annular conductive region, and at least one conductor electrically coupled with the annular conductive region. The controller has an input coupled to the receive region and has an output coupled to the transmit region. The controller is configured to transmit a first signal on the output of the controller and to the transmit region of the stator, receive a second signal on the input of the controller and from the receive region of the stator, and determine, based on the second signal, a proximity of the at least one conductor to the receive region.

公开(公告)号：US20210063226A1

公开(公告)日：2021-03-04

申请号：US16750207

申请日：2020-01-23

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Haozhe Tang ,  Yang Li ,  Songhua Hu

IPC: G01F23/26

Abstract: An apparatus for filtering touches and disturbances of a container comprises a processing unit (PU) and computer-readable storage devices storing machine instructions. The PU obtains and sums together sensor values for a first sampling time from electrodes affixed to the container. The PU determines a difference between the sum for the first sampling time and a sum for a second sampling time, which is compared to a threshold representative of a change in capacitance due to a touch on the container. The PU determines whether the touch on the container has occurred at the first sampling time based on the comparison. If a touch occurred, the PU continues to obtain additional sensor values for additional sampling times and determine whether a touch on the container has occurred at the additional sampling times, until determining no touch occurred. The PU determines liquid level for the container after determining no touch occurred.

公开(公告)号：US20220196442A1

公开(公告)日：2022-06-23

申请号：US17326936

申请日：2021-05-21

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Lichang Cheng ,  Zichen Qui ,  Songhua Hu ,  Yang Li

IPC: G01D5/241

Abstract: An apparatus is provided and includes a rotary encoder that comprises a stator, a rotor, and a controller. The stator has an opening adapted to surround a first portion of a rotatable shaft, a transmit region, and a receive region. The rotor has an opening adapted to surround a second portion of the rotatable shaft, an annular conductive region, and at least one conductor electrically coupled with the annular conductive region. The controller has an input coupled to the receive region and has an output coupled to the transmit region. The controller is configured to transmit a first signal on the output of the controller and to the transmit region of the stator, receive a second signal on the input of the controller and from the receive region of the stator, and determine, based on the second signal, a proximity of the at least one conductor to the receive region.

公开(公告)号：US11287301B2

公开(公告)日：2022-03-29

申请号：US16750207

申请日：2020-01-23

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Haozhe Tang ,  Yang Li ,  Songhua Hu

IPC: G01F23/26 ,  G01F23/263

Abstract: An apparatus for filtering touches and disturbances of a container comprises a processing unit (PU) and computer-readable storage devices storing machine instructions. The PU obtains and sums together sensor values for a first sampling time from electrodes affixed to the container. The PU determines a difference between the sum for the first sampling time and a sum for a second sampling time, which is compared to a threshold representative of a change in capacitance due to a touch on the container. The PU determines whether the touch on the container has occurred at the first sampling time based on the comparison. If a touch occurred, the PU continues to obtain additional sensor values for additional sampling times and determine whether a touch on the container has occurred at the additional sampling times, until determining no touch occurred. The PU determines liquid level for the container after determining no touch occurred.

公开(公告)号：US20230408301A1

公开(公告)日：2023-12-21

申请号：US18460915

申请日：2023-09-05

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Lichang Cheng ,  Zichen Qiu ,  Songhua Hu ,  Yang Li

IPC: G01D5/241

CPC classification number: G01D5/2417 ,  G01D5/2415 ,  G01D5/241 ,  G01R27/2605

Abstract: An apparatus is provided and includes a rotary encoder that comprises a stator, a rotor, and a controller. The stator has an opening adapted to surround a first portion of a rotatable shaft, a transmit region, and a receive region. The rotor has an opening adapted to surround a second portion of the rotatable shaft, an annular conductive region, and at least one conductor electrically coupled with the annular conductive region. The controller has an input coupled to the receive region and has an output coupled to the transmit region. The controller is configured to transmit a first signal on the output of the controller and to the transmit region of the stator, receive a second signal on the input of the controller and from the receive region of the stator, and determine, based on the second signal, a proximity of the at least one conductor to the receive region.

公开(公告)号：US11747174B2

公开(公告)日：2023-09-05

申请号：US17326936

申请日：2021-05-21

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Lichang Cheng ,  Ziehen Qiu ,  Songhua Hu ,  Yang Li

IPC: G01D5/241 ,  G01R27/26

CPC classification number: G01D5/2417 ,  G01D5/2415 ,  G01D5/241 ,  G01R27/2605

Abstract: An apparatus is provided and includes a rotary encoder that comprises a stator, a rotor, and a controller. The stator has an opening adapted to surround a first portion of a rotatable shaft, a transmit region, and a receive region. The rotor has an opening adapted to surround a second portion of the rotatable shaft, an annular conductive region, and at least one conductor electrically coupled with the annular conductive region. The controller has an input coupled to the receive region and has an output coupled to the transmit region. The controller is configured to transmit a first signal on the output of the controller and to the transmit region of the stator, receive a second signal on the input of the controller and from the receive region of the stator, and determine, based on the second signal, a proximity of the at least one conductor to the receive region.