62results about "Subaqueous/subterranean adaption" patented technology

This invention relates to a modular sensing, communication, and analytics platform. The platform includes a modular device network having a communication module, a main module, and at least one modular device, where the communication module, the main module, and the at least one modular device use acoustic signals, visual signals, light signals, and / or radio frequency to establish a communication link between the communication module, the main module, and the at least one modular device.

Technologies directed to smart farming are described. A multimodal soil sensor device includes an elongated housing having first and second portions. An antenna is located in or above the first portion and coupled to a wireless communications component. The wireless communications component causes the antenna to radiate or receive electromagnetic energy to communicate with a second device. The multimodal soil sensor device includes one or more multimodal soil sensors to measure one or more first measurements of a first sensing modality and one or more second measurements of a second sensing modality different than the first sensing modality. The wireless communications component wirelessly sends measurement data, including the first measurements and the second measurements, to the second device via the antenna.

The invention discloses a metamaterial RFID (Radio Frequency Identification) anti-interference antenna structure for a severe environment and a manufacturing method of the metamaterial RFID anti-interference antenna structure. The middle layer of a substrate of the antenna structure is made of corrosion-resistant polyether-ether-ketone resin doped carbon nanotubes; the upper-layer metal patch of the electromagnetic band gap unit array and the lower-layer metal layer of the annular gap are respectively attached to the upper surface and the lower surface of the middle layer of the substrate; and a self-adaptive impedance matching module is arranged at the joint of the equipment antenna and the feeder line. And each unit in the electromagnetic band gap unit array vertically penetrates through the substrate through a metalized via hole and is connected with the upper-layer metal patch and the lower-layer metal grounding layer of the substrate to form an LC resonance unit. The skin effect of eddy current on the metal surface can be counteracted through the reverse induction current, the loss of energy on the metal surface is greatly reduced, and the radiation efficiency of the metal surface is remarkably improved. In a complex electromagnetic environment, signals can be radiated and received more efficiently, the communication stability and reliability of an RFID system are effectively enhanced, and the probability of signal loss and error codes is reduced.

A retrofittable enclosure for storing a deployable antenna 120 on the outer surface of an underwater vessel 160 (e.g submarine, AUV), the retrofittable enclosure comprising: a protective housing 110 f

A locator includes a yaw sensor for measuring a yaw orientation of the locator and a triaxial antenna for receiving a dipole electromagnetic signal to generate flux components. A processor generates a relative yaw orientation characterizing a difference between the yaw orientation of the walkover locator and a reference yaw orientation of the transmitter and determines an actual position of at least one of the locate points relative to the walkover locator based on at least one measured set of the flux components, the relative yaw orientation and the measured pitch orientation of the transmitter. The locator can measure GPS positions of locate points at least for use in identifying an overhead position. Selected combinations of various positions and features relative to the transmitter and locator can be shown in isometric views. The locator can be configured for automatic switching between locating modes based on proximity to a plane of symmetry.

The invention relates to an underwater communication system configured to transmit data between an underwater vehicle (100-1) and a remote device and / or another underwater vehicle (100-2), comprising a radiating cable (115) having a first end and a second end opposite the first end, a radiating cable immersion device attached to the first end of the radiating cable, a radiating cable guide attached to the second end of the radiating cable, a modem (120) connected to the radiating cable, a receive-transmit module (125) connected to the modem, with the modem and the receive-transmit module configured to transmit, as a guided signal through the radiating cable, data received by the receive-transmit module and / or to transmit, via the receive-transmit module, data obtained from a guided signal received from the radiating cable. (See Figure 3 for abbreviations.)

An antenna assembly includes a flexible substrate configured to be extended from a retracted configuration to a deployed configuration and retracted from the deployed configuration to the retracted configuration. The antenna assembly further includes a ground plane element disposed on the substrate and a plurality of antenna elements disposed on the substrate. In the deployed configuration, the antenna assembly extends vertically away from a hull of an underwater vehicle. In the retracted configuration, the antenna assembly is retracted into the hull and / or conforms to a shape of the hull. The substrate can be attached to the underwater vehicle.

The invention relates to a connected manhole system (1), comprising a cast iron or steel manhole cover (2) that seals a manhole and has at least one slot (3) through it, sensors, connectors associated with an electronic device (6), and a protective housing (7) for the electronic device (6). According to the invention, the electronic device (6) is fixed to the underside of the manhole cover (2), which acts as a slot antenna to improve communication between, on the one hand, equipment located inside the manhole or integrated into the electronic device (6), and on the other hand, equipment located outside the manhole, while preserving the mechanical properties of the manhole cover (2). Figure 1

The invention relates to a low-frequency transmitting-receiving magnetoelectric coupling integrated antenna and a preparation method thereof. The low-frequency transmitting-receiving magnetoelectric coupling integrated antenna comprises a transmitting antenna unit and a receiving antenna unit, the transmitting antenna unit comprises an L-T type magnetoelectric composite material structure, the L-T type magnetoelectric composite material structure is formed by compounding at least one piezoelectric material layer and at least two magnetostriction material layers symmetrically arranged on the two sides of the piezoelectric material layer through a bonding layer, and the magnetization direction of magnetostriction materials is in the length direction of the composite material structure. The polarization direction of the piezoelectric material is along the thickness direction of the composite material structure; the receiving antenna unit comprises an MLT type magnetoelectric composite material structure, the MLT type magnetoelectric composite material structure comprises a plurality of piezoelectric material sheets which are in electrode series connection in a plane and at least one magnetostriction material layer which is compounded on at least one main surface of the piezoelectric material sheets which are in series connection through a bonding layer, and a permanent magnet which is used for providing a direct current bias magnetic field is arranged on the MLT type structure. According to the low-frequency transmitting-receiving magnetoelectric coupling integrated antenna, the effective working frequency is reduced to the target VLF frequency band through the L-T and MLT structures.

An apparatus for ground penetrating radar includes an antenna disposed within a sleeve. The sleeve includes a radar-absorbing material for attenuating the amplitude of incident radar waves. The sleeve has an aperture for permitting radar waves to pass into and out of the sleeve. A method for surveying a formation using ground penetrating radar includes rotating the antenna and sleeve while keeping the antenna and sleeve longitudinally stationary, and recording data including the amplitude of waves received by the antenna and the position of the aperture when such waves are received.

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.

A capacitively coupled below-grade antenna is provided. The antenna includes a housing; a cap detachable from the housing, the cap having a top surface; a feeding element coupled to a radio module; and a radiating element provided on the cap along the top surface such that the radiating element is capacitively coupled with the feeding element.

Methods and systems are disclosed for the augmentation of Electromagnetic (EM) telemetry by way of lengthening the lower antenna of the system by way of wired drill pipe. Wired drill pipe segments which allow for a continuous electrical power transmission and physical connection of multiple sections of drill pipe so that the anode of the EM transmitter can be effectively displaced farther up hole in the drill string, thereby lengthening the lower antenna portion of the telemetry system, resulting in enhanced signal amplitude both received and transmitted by the bi-directional subterranean communication or formation logging system.

The invention relates to the technical field of wireless communication. The invention discloses an extensible transmitting antenna device for through-the-earth communication, which comprises a plurality of transmitting antenna units which are of an annular structure; the self-adaptive adjusting devices are connected with the transmitting antenna units in a one-to-one correspondence manner; the transmitter is respectively connected with the plurality of self-adaptive adjusting devices; wherein the plurality of transmitting antenna units form an axially parallel antenna array. Through the structure, the radiation power and the antenna efficiency of the antenna array are greatly improved, the through-the-earth communication distance is effectively prolonged, the communication requirement of a deep mine is met, and miniaturization, expandability and high performance of the through-the-earth communication antenna are achieved.

Aspects of the present disclosure relate to wireless buryable or buried devices, such as wireless commercial-blasting-related devices (eg. wireless initiation devices), configured to wirelessly communicate with each other and / or remote systems, apparatuses or devices by way of through- the-earth (TTE) signal communication, wherein a given wireless buryable or buried device is formed from multiple modules that are assembled together (e.g., in-field), and wherein two or more modules of the given wireless buryable or buried device each carry a wireless signal transfer unit configured to provide or perform module-to-module wireless signal transfer by which wireless information signals and / or wireless power signals are communicable to and usable by this same wireless buryable or buried device itself, such that the wireless buryable or buried device provides or performs self-directed wireless signal transfer (e.g., with respect to wireless information signals and / or wireless power signals that originate from itself, and which are directed to itself).

An antenna system (50, Figure 3) comprises: an antenna comprising an array 40 of tapered slot elements 10; and a feed arrangement (62, Figure 3) for feeding the elements of the array. At least one ele

An antenna assembly includes an antenna releasably fastened to a member disposed in a borehole, where the antenna partially wraps around the member. The antenna assembly includes a fastening assembly configured to releasably fasten the antenna to the member. A fastening assembly includes one or more fastening portions configured to releasably fasten an antenna to a member disposed in a borehole. The one or more fastening portions extend across at least one surface of the antenna and extend around the member, and the one or more fastening portions are configured to contact the at least one surface of the antenna and are configured to contact an outer surface of the member, where the antenna partially wraps around the member.

A compact transmitting antenna includes a vacuum tube, a charged particle beam gun, a beam timing controller, and a beam speed controller. The charged particle beam gun is positioned for producing a beam of finite length of electrons or ions within the vacuum tube that moves within the vacuum tube at a controlled speed to generate an electromagnetic wave. The beam timing controller is arranged to control at least an on time and an off time of the beam. The beam speed controller is arranged to control speed of the beam within the vacuum tube. A frequency modulator is provided by the compact transmitting antenna, arranged to modulate the beam for carrying voice or data signals to transmit information from the compact transmitting antenna.

The invention discloses an antenna device for underwater equipment and the underwater equipment, and relates to the technical field of antenna devices. The antenna device comprises a first shell, a second shell, a signal transceiving unit and a processing unit. The first shell is provided with a first cavity, and the circuit board assembly is accommodated in the first cavity; one end of the second shell is hermetically and fixedly connected with the first shell, and a second cavity is formed in the second shell; the signal transceiving unit is arranged in the first cavity, is fixedly connected with the circuit board assembly, and receives or sends a signal through the first shell; the processing unit is arranged in the first cavity, is fixedly connected with the circuit board assembly and is in communication connection with the signal transceiving unit; wherein the first cavity and the second cavity are filled with a potting material, so that the signal transceiving unit and the processing unit are embedded into the potting material. The antenna device is suitable for miniaturized underwater equipment.

Methods, systems, and devices for extending underwater radio signal range with gas bubble paths are described. In some implementations, a line of gas bubbles may be generated in an aqueous environment by releasing gas through a porous medium in response to a signal from a platform. A communication path may be established between a first antenna and a second antenna submerged in the aqueous environment, with the communication path aligned with the line of gas bubbles. A radio frequency signal may be transmitted from the first antenna to the second antenna along the communication path, propagating through the line of gas bubbles. The conductivity of the aqueous environment along the communication path may be reduced by maintaining the line of gas bubbles, thereby improving the propagation of the radio frequency signal and extending the communication range underwater.

An antenna and antenna enclosure including a housing having a cylindrical first portion defining a hollow interior volume with an inner diameter, a cylindrical second portion defining a hollow interior portion having an inner diameter greater than the inner diameter of the first portion, and a disk disposed inside the second portion and defining a central hole. A rod is disposed in and extends through the central hole of the disk and is captured in the hollow interior volume of the cylindrical first portion. The rod defines a central opening and abuts an inner surface of the disk. A wire is arranged inside the central opening, and a cap covers the hollow interior of the cylindrical portion and engages the housing. A circuit board for the antenna is disposed on underside of the cap and connects to the wire.

Methods and apparatus for reducing vibration for an acoustic array. In an embodiment, an acoustic array includes a base structure having apertures and sensors supported by the base structure for providing an acoustic array. Vibration damping material is located in the apertures of the base structure and attachment mechanisms for secure the portions of vibration damping material to a vehicle. A mold material encapsulates the base structure, the sensors and the portions of vibration damping material. The structure and materials are selected to dampen vibration for certain frequencies.

This invention discloses a magnetic ring-isolated seawater antenna device, belonging to the field of wireless communication technology. It includes a magnetic ring, a hollow tube, and a perforated conductor plate. The perforated conductor plate has a through hole, through which the hollow tube passes and connects, or the hollow tube is located on the top surface of the perforated conductor plate, with the centers of the hollow tube and the through hole coinciding. The perforated conductor plate can float on the sea surface. A magnetic ring is fitted around the outside of the hollow tube, and epoxy resin is filled around the magnetic ring and between the magnetic ring and the hollow tube to form an encapsulation structure. A conductor sheet is provided on the inner wall of the hollow tube, and the conductor sheet is connected to a radio frequency (RF) signal line. One end of the RF signal line is connected to the conductor sheet, and the other end is connected to an antenna signal source. The bottom end of the hollow tube is connected to a flexible hose, which is also connected to a water pump. This invention provides a large dynamic range for antenna height, good broadband matching, effectively suppresses water supply-side current, and improves the radiation efficiency of the seawater antenna.

The telescopic antenna device comprises a power mechanism, a transmission mechanism, an antenna body and a cabin with an opening in the top end, and the transmission mechanism comprises a transmission plate, a lead screw and a lead screw nut which are in threaded connection; a protruding part is arranged on the inner wall of the top end of the cabin, the two ends of the lead screw are rotationally connected to the bottom end of the cabin and the protruding part respectively, one end of the transmission plate is connected with the lead screw nut, and the other end of the transmission plate is connected with the antenna body. The power mechanism is arranged at the bottom of the cabin body and is in transmission connection with the lead screw, and a sealing structure is arranged in the cabin body and used for isolating the lead screw from the lead screw nut. The antenna is applied to the field of marine equipment, the lead screw pair is adopted as a transmission mechanism for lifting the antenna body, meanwhile, the sealing structure is arranged to isolate the lead screw and the lead screw nut, it is guaranteed that the lead screw and the nut are not corroded by seawater, and therefore sealing performance can be kept while the resistance of an underwater vehicle appendage is reduced, and the service life of the underwater vehicle appendage is prolonged.

To provide an antenna device capable of improving the radiation directivity to the ground surface and radiation gain when the frequency of radiated radio waves is low.SOLUTION: An antenna device has an enclosure whose bottom is placed on the ground surface or buried underground, a substrate with a circuit housed in the enclosure, an antenna located on the substrate and radiating low-frequency radio waves by feeding power from the circuit, and a conductor located at the bottom and having an area larger than the substrate. The conductor is disposed outside the enclosure or inside the enclosure at the bottom.SELECTED DRAWING: Figure 1

A marine system, and corresponding method of transmitting an electronic signal in a marine environment, includes at least one pair of mutually coupled antennas disposed physically apart from each other, such that a separation gap exists therebetween. At least one of a first and second antenna of a given pair of the at least one pair of mutually coupled antennas may be communicatively coupled with at least one of the first and second antenna of any and all other pairs of mutually coupled antennas via a non-coaxial medium. The non-coaxial medium may be a cable with antennas of the at least one pair disposed at opposing terminals thereof, to support a contactless connection between at least a first and second transceiver module.

An antenna assembly includes a first antenna fastened to a first member disposed in a second member, where the first member is spaced apart from the second member in a radial direction. The antenna assembly includes a second antenna fastened to the second member. A direction of an antenna moment associated with the first antenna or the second antenna intersects an axial direction of the first member, an axial direction of the second member, or both.

The invention provides an auxiliary device for underwater platform communication, and relates to the field of underwater platform communication equipment. The separating mechanism is separably mounted in a mounting groove in the underwater platform in a sealing manner; the floating bag mechanism is separably installed in the inner cavity of the separation mechanism and comprises a floating bag body, an inflation assembly and a communication antenna. The floating bag body is separably mounted in an inner cavity of the separating mechanism in a folding manner; the inflation assembly is arranged on the outer wall of the floating bag body, is connected with the inner cavity of the floating bag body and is used for inflating the floating bag body, so that the floating bag body is inflated and expanded to open the separation mechanism and ascends after being separated from the interior of the separation mechanism, and the communication antenna is driven to ascend out of the water surface; one end of the communication antenna is connected to the underwater platform through the separation mechanism, and the other end of the communication antenna is connected to the floating bag body. The device is simple in structure, small in size and low in cost, and can provide a stable floating posture for the antenna for underwater platform communication.