SHIP IOT WIRELESS COMMUNICATION SYSTEM USING METAL SURFACE WAVE

    公开(公告)号:US20230171004A1

    公开(公告)日:2023-06-01

    申请号:US17824250

    申请日:2022-05-25

    CPC classification number: H04B13/00 H04L67/12 G16Y10/30

    Abstract: A ship IoT wireless communication system using metal surface waves is proposed. The ship IoT wireless communication system may include a first access point installed in a first compartment among a plurality of compartments formed in a ship, and a second access point installed in a second compartment among the plurality of compartments. Each of the first access point and the second access point may perform surface wave communication with each other to form a communication network inside the ship. Each of the first and second access points may include a surface wave generator configured to transmit and receive a surface wave through at least one of a floor, a ceiling, or a bulkhead of each of the plurality of compartments.

    METHOD OF SCHEDULING FOR UNDERWATER WIRELESS MOBILE NETWORK

    公开(公告)号:US20200244375A1

    公开(公告)日:2020-07-30

    申请号:US16072643

    申请日:2018-01-25

    Abstract: The present invention relates to a method of scheduling for an underwater wireless mobile network. Particularly, the present invention relates to a method of scheduling for an underwater wireless mobile network, whereby the method may consider a scheduling method that does not cause collision at a specific time domain, and improve network efficiency by receiving in a sink node a packet in a packet train form in consideration with a transfer velocity of a sound wave and a packet length rather than performing orthogonalization to avoid transmission time overlap at a specific time.

    Method of automatically assigning IP in ship ad-hoc network

    公开(公告)号:US10333888B2

    公开(公告)日:2019-06-25

    申请号:US15229014

    申请日:2016-08-04

    Abstract: A method of automatically assigning IP in a ship ad-hoc network includes (A) receiving a non-duplicate IP block from a terrestrial station by transmitting/receiving an IP request signal and an IP request response signal generated from a data link layer by one-hop ship stations able to perform direct transmission/reception with the terrestrial station; (B) allowing the one-hop ship stations receiving IP blocks to determine IPs thereof and to allocate IP blocks, as IP providers, to multi-hop ship stations able to perform indirect transmission/reception with the terrestrial station through ad-hoc communication when the multi-hop ship stations request the IP blocks; and (C) determining one of the IP providers to transmit an IP request signal such that the determined IP provider transmits an IP request response signal when multi-hop ship stations, to which the IP blocks are not allocated, receive MAC frames of plural IP providers in a channel allocation.

    CONTAINER SEARCH SYSTEM
    150.
    发明申请

    公开(公告)号:US20190009996A1

    公开(公告)日:2019-01-10

    申请号:US15576754

    申请日:2017-02-28

    Abstract: The present invention relates to a container search system comprising: a radiation irradiation unit for irradiating radiation to a container to be inspected; a detection unit installed opposite to the radiation irradiation unit to detect radiation having passed through a container; a transfer cart for loading an automobile thereon, on which a container to be inspected is loaded, and travelling along a search path formed between the radiation irradiation unit and the detection unit; and a circulation orbit unit formed to allow the transfer cart to circulate along the search path, wherein a primary side of a linear induction motor for generating a moving magnetic field is formed on either side among the transfer cart and the search path and a secondary-side reaction plate for inducing a secondary eddy current due to the moving magnetic field and generating a linear driving force is formed on the other side thereof. The container search system can transfer a transfer cart according to a linear motor scheme in a radiation search section, and thus can obtain a radiation search image of high quality.

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