Patents by Inventor Jawahar Arunachalam

Jawahar Arunachalam 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).

  • Field device with self-testing of a piezoelectric transducer
    Patent number: 9310412
    Abstract: An industrial process field device having a piezoelectric transducer performs self-testing of the condition of the piezoelectric transducer during a self-test mode. A charging current is supplied to the piezoelectric transducer, and voltage on the piezoelectric transducer as a result of the charging current is monitored. A diagnostic test result indicating condition of the piezoelectric transducer is produced based on the magnitude of the voltage.
    Type: Grant
    Filed: May 28, 2012
    Date of Patent: April 12, 2016
    Assignee: Rosemount Inc.
    Inventors: Jawahar Arunachalam, Udayashankar Bangalore Kasturi
  • Power supply for industrial process field device
    Patent number: 9310794
    Abstract: A wireless industrial process field device for use in controlling or monitoring a process variable of an industrial process includes a process interface element configured to sense or control the process variable of the industrial process. Process device circuitry includes a process interface circuit configured to measure or control the process variable of the industrial process with the process interface element. Wireless communication circuitry is configured for wireless communication. Power supply circuitry is configured to provide power to the process device circuitry from a power storage element at an output voltage. A low drop out (LDO) voltage regulator is configured to reduce the output voltage. A boost converter is configured to increase the output voltage.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: April 12, 2016
    Assignee: Rosemount Inc.
    Inventors: Jawahar Arunachalam, Udayashankar Bangalore Kasturi
  • FIELD DEVICE WITH SELF-TESTING OF A PIEZOELECTRIC TRANSDUCER
    Publication number: 20140320154
    Abstract: An industrial process field device having a piezoelectric transducer performs self-testing of the condition of the piezoelectric transducer during a self-test mode. A charging current is supplied to the piezoelectric transducer, and voltage on the piezoelectric transducer as a result of the charging current is monitored. A diagnostic test result indicating condition of the piezoelectric transducer is produced based on the magnitude of the voltage.
    Type: Application
    Filed: May 28, 2012
    Publication date: October 30, 2014
    Applicant: ROSEMOUNT INC.
    Inventors: Jawahar Arunachalam, Udayashankar Bangalore Kasturi
  • POWER SUPPLY FOR INDUSTRIAL PROCESS FIELD DEVICE
    Publication number: 20130106369
    Abstract: A wireless industrial process field device for use in controlling or monitoring a process variable of an industrial process includes a process interface element configured to sense or control the process variable of the industrial process. Process device circuitry includes a process interface circuit configured to measure or control the process variable of the industrial process with the process interface element. Wireless communication circuitry is configured for wireless communication. Power supply circuitry is configured to provide power to the process device circuitry from a power storage element at an output voltage. A low drop out (LDO) voltage regulator is configured to reduce the output voltage. A boost converter is configured to increase the output voltage.
    Type: Application
    Filed: October 27, 2011
    Publication date: May 2, 2013
    Inventors: Jawahar Arunachalam, Udayashankar Bangalore Kasturi