Patents by Inventor Kartheek Karna

Kartheek Karna 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).

  • Patent number: 11540443
    Abstract: Receivers are arranged to detect a corresponding observed phase shift, observed attenuation or other observed signal parameters for its respective microphone. An electronic data processor is adapted to estimate a distribution or quantity of material on the sieve based on the observed phase shift, the observed attenuation or the other observed signal parameters relative to a reference phase shift, a reference attenuation or other reference signal parameter. The operator can be alerted via a user interface if the material on the sieve is unevenly distributed or matches a preestablished distribution profile, or the sieve can be adjusted by an actuator to promote a generally uniform distribution.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: January 3, 2023
    Assignee: Deere & Company
    Inventors: Gurmukh H. Advani, Noel W. Anderson, Kartheek Karna
  • Patent number: 11175254
    Abstract: A sensing system for obtaining a gradient of soil properties in real-time as a function of soil depth is disclosed herein. The sensing system includes a support structure coupled to an agricultural implement and which is rotatable about a rotational axis relative to a frame of the agricultural implement. A sensor is arranged on a surface of the support structure and configured to generate an output signal indicative of the measured soil property based on a sensed a capacitance change corresponding to a change in a dielectric property of a measured soil sample with which the sensor interacts. A measuring unit is coupled to the at least one sensor and processes the output signal generated by the at least one sensor to generate a gradient profile of the soil properties in real-time as a function of one or more depths for display on a user interface.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: November 16, 2021
    Assignee: Deere & Company
    Inventors: Jeffrey S. Puhalla, Michael Rhodes, Nikolai Tevs, Kartheek Karna, Noel W. Anderson
  • Publication number: 20200245556
    Abstract: Receivers are arranged to detect a corresponding observed phase shift, observed attenuation or other observed signal parameters for its respective microphone. An electronic data processor is adapted to estimate a distribution or quantity of material on the sieve based on the observed phase shift, the observed attenuation or the other observed signal parameters relative to a reference phase shift, a reference attenuation or other reference signal parameter. The operator can be alerted via a user interface if the material on the sieve is unevenly distributed or matches a preestablished distribution profile, or the sieve can be adjusted by an actuator to promote a generally uniform distribution.
    Type: Application
    Filed: January 31, 2019
    Publication date: August 6, 2020
    Inventors: Gurmukh H. Advani, Noel W. Anderson, Kartheek Karna
  • Patent number: 10670763
    Abstract: A sensor for determining soil properties is disclosed herein. The sensor includes a ground engaging structure adapted for coupling to an agricultural implement and to penetrate soil at a predetermined depth. An electrode assembly is disposed on a sensing surface of the ground engaging structure that includes a plurality of electrode sensing units. The plurality of electrode sensing units are configured to selectively generate a series of electric fields that project outwardly into the surrounding soil in response to receipt of an excitation signal and sense changes in the electric field corresponding to a change in a measured electrical output signal that is used to determine one or more soil properties during movement of the agricultural implement in a field.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: June 2, 2020
    Assignee: DEERE & COMPANY
    Inventors: Michael Rhodes, Kartheek Karna, Nikolai Tevs, Jeffrey S. Puhalla, Elijah B. Garner
  • Publication number: 20190376920
    Abstract: A sensing system for obtaining a gradient of soil properties in real-time as a function of soil depth is disclosed herein. The sensing system includes a support structure coupled to an agricultural implement and which is rotatable about a rotational axis relative to a frame of the agricultural implement. A sensor is arranged on a surface of the support structure and configured to generate an output signal indicative of the measured soil property based on a sensed a capacitance change corresponding to a change in a dielectric property of a measured soil sample with which the sensor interacts. A measuring unit is coupled to the at least one sensor and processes the output signal generated by the at least one sensor to generate a gradient profile of the soil properties in real-time as a function of one or more depths for display on a user interface.
    Type: Application
    Filed: August 23, 2019
    Publication date: December 12, 2019
    Inventors: Jeffrey S. Puhalla, Michael Rhodes, Nikolai Tevs, Kartheek Karna, Noel W. Anderson
  • Patent number: 10444176
    Abstract: A sensing system for obtaining a gradient of soil properties in real-time as a function of soil depth is disclosed herein. The sensing system includes a support structure coupled to an agricultural implement and which is rotatable about a rotational axis relative to a frame of the agricultural implement. A sensor is arranged on a surface of the support structure and configured to generate an output signal indicative of the measured soil property based on a sensed a capacitance change corresponding to a change in a dielectric property of a measured soil sample with which the sensor interacts. A measuring unit is coupled to the at least one sensor and processes the output signal generated by the at least one sensor to generate a gradient profile of the soil properties in real-time as a function of one or more depths for display on a user interface.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: October 15, 2019
    Assignee: DEERE & COMPANY
    Inventors: Jeffrey S. Puhalla, Michael Rhodes, Nikolai Tevs, Kartheek Karna, Noel W. Anderson
  • Patent number: 10197378
    Abstract: Embodiments herein relate to a time domain depth sensor system and method for determining a depth of a ground engaging device in soil. The sensor system may include a signal transmission element arranged on an outer periphery of a ground engaging device that is adapted to penetrate soil. The signal transmission element can be arranged to receive and transmit an electrical signal that is responsive to impedance discontinuities detected by a pulse detector. The pulse detector is configured to detect a first and a second reflected signal corresponding to a sensed impedance discontinuities at a first and a second soil location. An electronic data processor is communicatively coupled the pulse detector and is configured to determine the depth of the ground engaging device in the soil based on a difference between a first time of propagation of the first reflected signal and a second time of propagation of the second reflected signal.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: February 5, 2019
    Assignee: DEERE & COMPANY
    Inventors: Michael L. Rhodes, Kartheek Karna, Nikolai Tevs, Jeffrey S. Puhalla, Noel W. Anderson
  • Publication number: 20180239044
    Abstract: A sensor for determining soil properties is disclosed herein. The sensor includes a ground engaging structure adapted for coupling to an agricultural implement and to penetrate soil at a predetermined depth. An electrode assembly is disposed on a sensing surface of the ground engaging structure that includes a plurality of electrode sensing units. The plurality of electrode sensing units are configured to selectively generate a series of electric fields that project outwardly into the surrounding soil in response to receipt of an excitation signal and sense changes in the electric field corresponding to a change in a measured electrical output signal that is used to determine one or more soil properties during movement of the agricultural implement in a field.
    Type: Application
    Filed: February 17, 2017
    Publication date: August 23, 2018
    Inventors: Michael Rhodes, Kartheek Karna, Nikolai Tevs, Jeffrey S. Puhalla, Elijah B. Garner
  • Publication number: 20180238823
    Abstract: A sensing system for obtaining a gradient of soil properties in real-time as a function of soil depth is disclosed herein. The sensing system includes a support structure coupled to an agricultural implement and which is rotatable about a rotational axis relative to a frame of the agricultural implement. A sensor is arranged on a surface of the support structure and configured to generate an output signal indicative of the measured soil property based on a sensed a capacitance change corresponding to a change in a dielectric property of a measured soil sample with which the sensor interacts. A measuring unit is coupled to the at least one sensor and processes the output signal generated by the at least one sensor to generate a gradient profile of the soil properties in real-time as a function of one or more depths for display on a user interface.
    Type: Application
    Filed: February 17, 2017
    Publication date: August 23, 2018
    Inventors: Jeffrey S. Puhalla, Michael Rhodes, Nikolai Tevs, Kartheek Karna, Noel W. Anderson
  • Publication number: 20180120082
    Abstract: Embodiments herein relate to a time domain depth sensor system and method for determining a depth of a ground engaging device in soil. The sensor system may include a signal transmission element arranged on an outer periphery of a ground engaging device that is adapted to penetrate soil. The signal transmission element can be arranged to receive and transmit an electrical signal that is responsive to impedance discontinuities detected by a pulse detector. The pulse detector is configured to detect a first and a second reflected signal corresponding to a sensed impedance discontinuities at a first and a second soil location. An electronic data processor is communicatively coupled the pulse detector and is configured to determine the depth of the ground engaging device in the soil based on a difference between a first time of propagation of the first reflected signal and a second time of propagation of the second reflected signal.
    Type: Application
    Filed: October 27, 2016
    Publication date: May 3, 2018
    Inventors: Michael L. Rhodes, Kartheek Karna, Nikolai Tevs, Jeffrey S. Puhalla, Noel W. Anderson
  • Patent number: 7903417
    Abstract: An electrical circuit assembly includes an electrical circuit substrate having a first side; a heat sink including a metal base plate having a first side and a second side, and a plurality of fins extending from the second side; and a thermally conductive and electrically insulating adhesive directly interconnecting at least a portion of the first side of the electrical circuit substrate with the first side of the base plate.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: March 8, 2011
    Assignee: Deere & Company
    Inventors: Ronnie Dean Stahlhut, Clement Vanden Godbold, Jeffrey Gerald Hopman, Kartheek Karna, James Arthur Springer, John Lopes Alves, Lise Alves, legal representative
  • Publication number: 20080247139
    Abstract: An electrical circuit assembly includes an electrical circuit substrate having a first side; a heat sink including a metal base plate having a first side and a second side, and a plurality of fins extending from the second side; and a thermally conductive and electrically insulating adhesive directly interconnecting at least a portion of the first side of the electrical circuit substrate with the first side of the base plate.
    Type: Application
    Filed: October 9, 2007
    Publication date: October 9, 2008
    Inventors: Ronnie D. Stahlhut, Clement Vanden Godbold, Jeffrey Gerald Hopman, Kartheek Karna, James Arthur Springer, John Lopes Alves, Lise Alves
  • Publication number: 20080084671
    Abstract: An electrical circuit assembly includes a flexible electrical circuit having a first side; a heat sink including a metal base plate having a first side and a second side, and a plurality of fins extending from the second side; and a thermally conductive and electrically insulating adhesive directly interconnecting at least a portion of the first side of the flexible electrical circuit with the first side of the base plate.
    Type: Application
    Filed: October 10, 2006
    Publication date: April 10, 2008
    Inventors: Ronnie Dean Stahlhut, Clement Vanden Godbold, Jeffrey Gerald Hopman, Kartheek Karna, James Arthur Springer, John Lopes Alves, Lise Alves