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    Electrostatic polymer aerosol deposition and fusing of solid particles for three-dimensional printing
    2.
    发明授权
    Electrostatic polymer aerosol deposition and fusing of solid particles for three-dimensional printing 有权

    公开(公告)号：US10919215B2

    公开(公告)日：2021-02-16

    申请号：US15683531

    申请日：2017-08-22

    Applicant: PALO ALTO RESEARCH CENTER INCORPORATED

    Inventor： David Mathew Johnson ,  Scott A. Elrod ,  David K. Biegelsen ,  Victor Alfred Beck

    IPC: B29C64/141 ,  B33Y10/00 ,  B29C64/205 ,  B33Y30/00 ,  B29C64/209 ,  B05D1/04

    Abstract: An additive manufacturing system has an aerosol generator to aerosolize a powder, a deposition surface, a surface charging element to apply a blanket charge to the deposition surface, a charging print head to selectively remove portions of the blanket charge from the deposition surface, and a transport system to transport the aerosol powder from the aerosol generator to the deposition surface, the transport system having an aerosol charging element to apply charge opposite of the blanket charge to the aerosol powder. An additive manufacturing process includes creating an aerosol from a powder at a spray generator, charging the aerosol to produce a charged aerosol having a first charge, forming a blanket charge on a deposition surface having a second charge of an opposite polarity from the first charge, selectively removing regions of the blanket charge, and transporting the charged aerosol to the charged regions to form structures on the charged regions from the charged aerosol.

    Wireless building sensor system
    3.
    发明授权
    Wireless building sensor system 有权

    公开(公告)号：US10250955B2

    公开(公告)日：2019-04-02

    申请号：US15352095

    申请日：2016-11-15

    Applicant: Palo Alto Research Center Incorporated

    Inventor： David Eric Schwartz ,  George Daniel ,  Clinton Smith ,  Scott A. Elrod ,  Daniel H. Greene

    IPC: G08C19/22 ,  H04Q9/00 ,  H02J50/20 ,  H02J50/40 ,  F24F11/56 ,  F24F110/10 ,  F24F110/20 ,  F24F110/50 ,  F24F110/30

    Abstract: A system of sensor nodes is combined with an RF hub that transmits RF power to the sensors and receives data therefrom. The sensor nodes contain: one or more sensors for measuring indoor conditions, an antenna, an energy storage element, and electronics for powering the system via harvesting RF energy, reading sensor data, and communicating sensor data. The sensors, antenna, and other components on the nodes can be fabricated conventionally, or via printing. They may be fabricated as “flexible hybrid electronics”, in which conventional components are bonded onto flexible substrates. The RF hub consists of one or more antennas capable of transmitting RF power electronics for steering the center of radiation of the RF power in at least one direction or in more than one direction electronics for receiving a demodulating RF data signal. The RF hub may be powered directly from the building.

    Method and system for in situ measurement of root biomass and structure using acoustic waves
    8.
    发明授权
    Method and system for in situ measurement of root biomass and structure using acoustic waves 有权

    公开(公告)号：US10352916B2

    公开(公告)日：2019-07-16

    申请号：US15468005

    申请日：2017-03-23

    Applicant: Palo Alto Research Center Incorporated

    Inventor： Eric D. Cocker ,  Scott A. Elrod ,  Uriel A. Rosa ,  Jessica L. B. Rivest ,  George W. Daniel ,  David E. Schwartz

    IPC: G01N33/00 ,  G01N29/04 ,  G01N29/11 ,  G01N29/34 ,  G01N29/44

    Abstract: Embodiments of the present invention provide a system and method for accurate, field-ready, non-destructive, and three-dimensional plant root characterization using acoustic signals. The system is portable, fast, precise, and can be used in field conditions, including moist soil, to visualize root structure or mass distribution, without damaging growing crops. The system may also be applied to characterize other underground objects, such as pipes, building foundations, archaeological artifacts, or mineral ores. During operation, the system generates a source acoustic signal. The system sends the source acoustic signal to an actuator acoustically coupled directly to a plant. The system obtains a response acoustic signal from an underground transducer monitoring a root of the plant. The system analyzes the response acoustic signal according to a model and based on the source acoustic signal. The system then determines, based on the analyzed response acoustic signal, a physical configuration of the plant root.

    Additive deposition system and method
    9.
    发明授权
    Additive deposition system and method 有权

    公开(公告)号：US10434703B2

    公开(公告)日：2019-10-08

    申请号：US15001452

    申请日：2016-01-20

    Applicant: Palo Alto Research Center Incorporated

    Inventor： David Mathew Johnson ,  Victor Alfred Beck ,  Scott A. Elrod ,  David K. Biegelsen

    IPC: G03G13/05 ,  B29C64/112 ,  B29C64/357 ,  B33Y30/00 ,  B29C64/106 ,  B29C64/20 ,  B33Y10/00

    Abstract: An additive deposition system and method, the system including generating an aerosol of additive material that is charged and deposited onto a selectively charged substrate. Selectively charging the substrate includes uniformly charging a surface of the substrate, selectively removing charged from the substrate to create charged and neutral regions of the substrate surface. The charged regions of the substrate having a polarity opposite a polarity of the charged aerosol. The charged aerosol of additive material deposited onto the selectively charged portions of the substrate surface due to the potential difference between the charged substrate and charged aerosol. The system and method further including repeating the additive deposition process to create a multi-layer matrix of additive material.

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