Patents by Inventor Roman Strebel

Roman Strebel 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).

  • Charge to voltage conversion circuit for WIM sensor and WIM sensor with same
    Patent number: 9411357
    Abstract: An electronic circuit that changes a charge signal into a voltage signal within a sensor suitable for direct installation in a roadway can be connected to two single-core cables that need not be highly insulating yet can realize the required power supply of the electronics. The circuit includes an integrated impedance converter (IEPE) at the output to a two-core cable and a charge amplifier with an IC1 that has two inputs. A capacitor Cc is connected in series to the signal output of the sensor at one input of the IC1. A Zener diode D is arranged between the ground output of the sensor and the second input of the IC1 and can be supplied with power by a resistor R1 in conjunction with a power supply arranged on the output side in order to adapt the potential at the second input of the IC1.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: August 9, 2016
    Assignee: KISTLER HOLDING AG
    Inventors: David Cornu, Adrian Hofmann, Leo Amstutz, Roman Strebel, Claudio Cavalloni
  • ELECTRONIC CIRCUIT FOR A WEIGHT-IN-MOTION SENSOR
    Publication number: 20150042304
    Abstract: An electronic circuit that changes a charge signal into a voltage signal within a sensor suitable for direct installation in a roadway can be connected to two single-core cables that need not be highly insulating yet can realize the required power supply of the electronics. The circuit includes an integrated impedance converter (IEPE) at the output to a two-core cable and a charge amplifier with an IC1 that has two inputs. A capacitor Cc is connected in series to the signal output of the sensor at one input of the IC1. A Zener diode D is arranged between the ground output of the sensor and the second input of the IC1 and can be supplied with power by a resistor R1 in conjunction with a power supply arranged on the output side in order to adapt the potential at the second input of the IC1.
    Type: Application
    Filed: March 26, 2013
    Publication date: February 12, 2015
    Inventors: David Cornu, Adrian Hofmann, Leo Amstutz, Roman Strebel, Claudio Cavalloni