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    ELECTROMAGNETIC MARKER DEVICES WITH SEPARATE RECEIVE AND TRANSMIT ANTENNA ELEMENTS
    25.
    发明申请
    ELECTROMAGNETIC MARKER DEVICES WITH SEPARATE RECEIVE AND TRANSMIT ANTENNA ELEMENTS 有权

    公开(公告)号：US20210231833A1

    公开(公告)日：2021-07-29

    申请号：US16908625

    申请日：2020-06-22

    Applicant: SeeScan, Inc.

    Inventor： Stephanie M. Bench ,  Mark S. Olsson ,  Matthew D. Bockman

    IPC: G01V15/00 ,  H01Q7/00 ,  H01Q1/24

    Abstract: A marker device embodiment may include separate concentrically-oriented receive and transmit antenna elements coupled to an ASIC which includes electronics to receive an input signal at a first frequency from a transmitter, convert the input signal to a power supply to power the electronic circuit, generate, in response to the input signal, an output signal at a second frequency different from the first frequency, and provide the output signal, via the transmit antenna element, to an above-ground receiver for assistance in determining the location of a buried utility.

    LOW COST, HIGH PERFORMANCE SIGNAL PROCESSING IN A MAGNETIC-FIELD SENSING BURIED UTILITY LOCATOR SYSTEM
    27.
    发明申请
    LOW COST, HIGH PERFORMANCE SIGNAL PROCESSING IN A MAGNETIC-FIELD SENSING BURIED UTILITY LOCATOR SYSTEM 审中-公开

    公开(公告)号：US20200313310A1

    公开(公告)日：2020-10-01

    申请号：US16833426

    申请日：2020-03-27

    Applicant: SeeScan, Inc.

    Inventor： Stephanie M. Bench ,  Mark S. Olsson

    IPC: H01Q23/00 ,  H01Q1/52 ,  H01Q1/24

    Abstract: Front end circuits and associated apparatus, systems, and methods for use in electronic devices such as buried utility locators are disclosed. The circuits include receivers and filters on input signals that are coupled to ground rather than differentially. A multiplexing circuit allows shared use of amplifiers, and analog-to-digital converters via a switching mechanism for selectively making or breaking electrical connection to the receiver channels for efficient sharing of electronics resources while minimizing crosstalk interference and advantageously reducing costs.

    Buried utility marker devices, systems, and methods
    29.
    发明授权
    Buried utility marker devices, systems, and methods 有权

    公开(公告)号：US11988798B1

    公开(公告)日：2024-05-21

    申请号：US17731579

    申请日：2022-04-28

    Applicant: SeeScan, Inc.

    Inventor： Stephanie M. Bench ,  Mark S. Olsson

    IPC: G01V3/16 ,  G01V3/10 ,  G01V3/15 ,  G01V3/165 ,  G01V15/00

    CPC classification number: G01V3/165 ,  G01V3/10 ,  G01V3/15 ,  G01V15/00

    Abstract: Systems and methods for locating buried utilities in conjunction with associated electro-magnetic marker devices are disclosed. A marker device may include a marker device antenna and an electronic circuit operatively coupled to the marker device antenna. The electronic circuit may include at least two resonant circuits, including a first resonant circuit formed in combination with the marker device antenna for receiving an excitation signal at a first frequency from a marker excitation device. The received excitation signal may be converted into a power supply by a power circuit for powering the electronic circuit. Responsive to the received excitation signal, a processing element provided in the electronic circuit may generate an output signal at a second frequency, which is substantially different from the first frequency. The generated output signal may be tuned by a second resonant circuit and provided to the marker device antenna.

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