Electromagnetic marker devices with separate receive and transmit antenna elements

    公开(公告)号:US11467317B2

    公开(公告)日:2022-10-11

    申请号:US16908625

    申请日:2020-06-22

    Applicant: SeeScan, Inc.

    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.

    Electromagnetic marker devices for buried or hidden use

    公开(公告)号:US11280934B2

    公开(公告)日:2022-03-22

    申请号:US16449187

    申请日:2019-06-21

    Applicant: SeeScan, Inc.

    Abstract: The present disclosure relates to electromagnetic marker devices for locating hidden or buried objects. One embodiment includes an antenna having a plurality of conductive windings enclosed in a housing made of a low dielectric constant material and an electronic circuit including a circuit board having circuit elements disposed thereon and electrically coupled to the conductive windings through a connector. The circuit elements receive an input signal having a first frequency from an above-ground transmitter, convert the input signal to a power supply to power up the electronic circuit, generate, in response to the input signal, an output signal having a second frequency different from the first frequency, and provide the output signal, via the antenna element, to an above-ground receiver.

    Buried utility marker devices, systems, and methods

    公开(公告)号:US11333786B1

    公开(公告)日:2022-05-17

    申请号:US16551653

    申请日:2019-08-26

    Applicant: SeeScan, Inc.

    Abstract: Systems and methods for locating buried utilities in conjunction with associated electromagnetic 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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