31results about "Subaqueous/subterranean adaption" patented technology

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

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.)

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.

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.

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

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 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.

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.

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.

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.

Example embodiments presented herein are directed towards a subsea control system for transmitting subsea related data to and from a topside control system with the use of Subsea Electronic Modules (SEMs) connected in a network in a multidrop configuration.

An antenna for wireless communication via a lossy medium, a structure thereof is optimized to improve transmission characteristics such as a transmission coefficient. The antenna includes at least one pair of electrodes and a sheath portion. The sheath portion includes a wiring electrically connecting each of the at least one pair of electrodes and a corresponding power supply terminal. The sheath portion is also referred to as a sheath. In this antenna, a minimum diameter of the electrode is larger than a width of the wiring included in the sheath portion. A shape of each of the at least one pair of electrodes is, for example, substantially spherical.

This utility model belongs to the field of underwater cable antenna erection engineering technology, and specifically relates to a zero-buoyancy cable antenna depth-fixing, shape-fixing, and orientation device. It meets the requirements for depth-fixing, shape-fixing, and orientation of underwater cable antennas, is simple, easy to use, and low-cost, and is suitable for deploying fixed underwater cable antennas in nearshore areas. It includes a fixed depth-fixing mechanism and an adaptive depth-fixing mechanism installed in the ocean. The fixed depth-fixing mechanism includes a first fixed anchor placed on the seabed, connected to a horseshoe buckle via a first cable I. Above the horseshoe buckle, a first buoy floating on the sea surface is connected via a first depth-fixing cable, and below the horseshoe buckle, a first counterweight is connected via a first cable II. The adaptive depth-fixing mechanism includes a second fixed anchor placed on the seabed, connected to a second counterweight via a second cable passing through a pulley. Above the pulley, a second depth-fixing cable is connected, and the second depth-fixing cable is connected to a second buoy floating on the sea surface. A horizontally taut cable antenna is connected between the horseshoe buckle and the pulley.

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 to the first end, a radiating cable immersion device fixed to the first end of the radiating cable, a radiating cable guide element fixed 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.

The invention relates to the field of measurement while drilling in petroleum and natural gas drilling engineering, in particular to a near-bit antenna device which mainly solves the problems that an original device is too large in signal attenuation rate, complex in shielding structure process, low in signal transmission stability and low in resistivity measurement precision. The near-bit device comprises a near-bit body (1), an annular groove is formed in the outer wall of the near-bit body (1), a receiving antenna shell (2) is arranged outside the annular groove, a short-pass antenna protection cover (4) is arranged in the receiving antenna shell (2), a receiving antenna (9) is annularly wound between the short-pass antenna protection cover (4) and the receiving antenna shell (2), and a short-pass antenna structure is arranged in the short-pass antenna protection cover (4). The device can greatly reduce the signal attenuation rate of the antenna, simplify the installation process of the shielding structure, improve the installation efficiency, and improve the signal transmission stability and the resistivity measurement precision of a near-bit instrument under the complex formation condition.

An antenna unit includes a case having a base and a lid. An antenna assembly is located within the lid and is IP67 compliant, being waterproof. The antenna assembly can provide antennas located on one or more baseplates that are positioned within the top cover of the box. A baseplate can act as a heatsink, a reflector, and / or a ground plane, for the antennas while the cover is closed and in the locked position. The antennas have been designed and optimized to work on a baseplate and designed to operate with the thick plastic cover of the box. A plurality of antenna components are situated within the base separate from the antenna assembly. An optional barrier is located within the base to divide the antenna components from the lid. The antenna assembly include different types of antennas operable at least between 600 MHz to 39 GHz. The lid is separable from the base and is divided from other components to minimize interference so that all antennas may operate simultaneously while the lid is in a closed position.

Described herein is an electronic device having an antenna that detects or generates a magnetic field, the antenna defining a cavity within which is located at least part of one or more electronic components, wherein within the cavity and in between the antenna and the at least part of the one or more electronic components is located a magnetic field permeable composite, the magnetic field permeable composite comprising a binder material and particulate magnetisable material.

According to the swimming pool floating antenna box, the cleaning robot and the using method of the swimming pool floating antenna box, the swimming pool floating antenna box can float on the water surface, a winding seat with a rotatable rotating part is further arranged in the antenna box, and a signal box is arranged in the winding seat. The cleaning robot comprises a first cleaning device and a second cleaning device, the antenna box is arranged on the second cleaning device, the first cleaning device sinks to the water bottom and is used for cleaning the bottom of a swimming pool, the second cleaning device floats on the water surface and is used for cleaning the water surface of the swimming pool, and a first signal connecting line is arranged on the second cleaning device. The first end of the first signal connecting line is connected with the antenna box, the second end of the first signal connecting line is connected with the first cleaning device, the detachable antenna box is arranged on the second cleaning device, the first signal connecting line can be conveniently taken and used, meanwhile, a user can replace different antenna boxes according to different use scenes or swimming pool depths, and the use experience of the user is improved. And the first signal connecting lines with different lengths or sizes are matched, so that the practicability of the product is improved.

An electric wave transmission device includes an electronic device having a circuit board on which an electric wave transmission circuit is formed and a dielectric layer, in which the electric wave transmission circuit has a high frequency control unit, a feeder line, and an antenna, the high frequency control unit supplies a high-frequency signal in one or more frequency bands to the antenna via the feeder line, the feeder line and the antenna are covered with the dielectric layer, the dielectric layer protects the electric wave transmission device such that the electric wave transmission device is in a usable state while being in contact with water, sea water, an electrolytic solution, or a substance or a tissue containing a certain amount of moisture, and a wiring length of the feeder line is equal to or less than 35 mm.

A communication device for use while submerged in a fluid or while operating in inclement weather includes a transceiver for transmitting and receiving communication signals, an antenna exposed to a submerged ambient environment formed of a self-passivating material, and a communication cable for propagating the communication signals between the transceiver and the antenna. The antenna is built-in or attached to an exterior hull portion of an aquatic vessel. The communication device is integral with or attachable to a garment, a protective layer or a covering worn by a user.

An apparatus is for wireless communications in a high-pressure environment having a housing, wherein the housing includes an induction interface, a base portion, a wall section and an internal region, wherein the wall section connects the induction interface and the base portion, and at least one primary induction coil arranged inside the internal region, wherein the induction interface includes a layer of any one of a glass material, a glass-ceramic material and a ceramic material.

The present disclosure refers to a transmission coupler for receiving radio signals carrying consumption data from a utility meter. The utility meter comprises a meter housing wherein a radio frequency transmitter circuit and a meter antenna is arranged. The transmission coupler comprises a coupling antenna, a transmission line or a radio frequency connector for connection of a transmission line and a mechanical connection element. The mechanical connection element is arranged for mechanically connection of the transmission coupler to an outer surface of the meter housing whereby a near field coupling is provided between the meter antenna and the coupling antenna through the meter housing. The transmission line or radio frequency connector is electrically connected to the coupling antenna. The transmission coupler further comprises a displacement element arranged to occupy a volume in the proximity of the coupling antenna, whereby a volume of a medium surrounding the transmission coupler is displaced away from the coupling antenna by the displacement element, such that the influence on the near field coupling by the medium surrounding the coupling antenna is reduced.

Slotted dipole antennas for use in an antenna system on a drill collar segment is presented. Dipoles may be placed in slots on the drill collar segment. A dipole consists of a ferrite rod with electric wires placed above and below the ferrite rod. Wires may be connected such that wire current forms a loop around the ferrite rod. When a group of slots are used for an antenna, wire holes are constructed between slots. Effectively a single wire may be used to go above all ferrite rods in the group and then turn to go below all the ferrite rods. Two wire segments are in a wire hole connecting two adjacent slots. Currents in the two segments are the same in magnitudes and flow in opposite directions. There is no net current in wires in a wire hole.

It provides an antenna suitable for underwater communications. [Solution] The dipole antenna for underwater communication comprises a first conductor having a first length and a first end not covered with a feed terminal and a first insulating material, and covered with the first insulating material except for the first end, and a second conductor having a second length and a second end not covered with a feed terminal and a second insulating material, and covered with the second insulating material except for the second end.