191results about "Subaqueous/subterranean adaption" patented technology

Sonde devices for providing magnetic field signals for use with utility locators or other devices are disclosed. In one embodiment a sonde device includes a housing, a core comprising a plurality of core sections, and one or more support structures, which may include windings. Circuit and / or power supply elements may be disposed fully or partially within the core to control generation of predefined magnetic field frequencies and waveforms.

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.

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.

Disclosed is a method and a device for calculating a radiation field of satellite-borne array antennas. comprising: calculation of a kernel function of an antenna: calculating the kernel function of a very-low-frequency antenna in an ionospheric environment; calculation of an antenna current distribution: establishing and solving N current integral equations satisfied by the array antennas to obtain the current distribution of each antenna in the array; calculation of the radiation fields of the array antennas: calculating and summing the radiation fields of all antenna elements to obtain the radiation field of the array antennas; calculation of an array factor: analyzing a propagation phase difference between the ith antenna and the first antenna, and calculating the array factor of the array antennas accordingly, further simplifying the radiation field of the array antennas. The present disclosure has advantages of less calculation time consumption and high accuracy.

The invention discloses an underwater communication equipment technology, and aims to provide a full-sea-depth antenna packaging assembly and a packaging method thereof.The full-sea-depth antenna packaging assembly is characterized in that the full-sea-depth antenna packaging assembly comprises a cabin penetrating part, an antenna unit, an antenna protection cover, a vulcanization coating layer and a sealing ring, and the full-sea-depth antenna packaging assembly is used for achieving stable transmission of signals in a deep sea environment; the antenna unit is used for transmitting and receiving electromagnetic wave signals; a conductive channel is arranged in the cabin penetrating piece and used for being electrically connected with the antenna unit so that electric signals inside and outside the cabin can penetrate through the cabin. The whole antenna protection cover is cylindrical, the end part of the antenna protection cover is in transition connection to form a hemispherical shape, and an antenna placement area is formed in the antenna protection cover; the vulcanized coating layer is coated on the peripheral side of the joint of the antenna protection cover and the cabin penetrating piece; the sealing ring is arranged between the antenna protection cover and the cabin penetrating piece and is of a metal-rubber composite structure. The invention is suitable for the technical field of underwater communication equipment.

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 utility model discloses an underwater antenna lifting device, which can realize the lifting of an antenna and the linkage of a part of a hull shell, and ensures that the hydrodynamic appearance of a UUV (Unmanned Underwater Vehicle) is not damaged when the antenna is in a landing state. The device mainly comprises a driving shaft (1), a rotating shaft bracket (2), an antenna cover plate (3), a speed reducer (4), a servo motor (5), an antenna rod (6), a connecting rod (7), an integrated antenna (8) and an auxiliary rotating shaft (9). The device uses a crank rocker mechanism for reference, when the antenna lands, the antenna cover plate is flush with the hull shell to ensure the hydrodynamic appearance, when the device acts, the motor drives the driving shaft to rotate to lift the antenna cover plate and the antenna to be perpendicular to the axis of the hull, and it is ensured that the antenna integration is away from the sea surface by a certain distance to achieve communication. The antenna lifting device is compact in structure, accurate in lifting reset and high in reliability.

The invention provides an underwater information interaction device of a mobile communication terminal through electromagnetic waves, which is characterized by comprising an electromagnetic wave transceiving unit, a cable winding and unwinding reel and a fixed bracket, the electromagnetic wave receiving and transmitting unit is used for realizing wireless information interaction between the device and the mobile intelligent terminal through an antenna contained in the electromagnetic wave receiving and transmitting unit; the cable take-up and pay-off reel is used for realizing take-up and pay-off of a cable, fixing the antenna and enabling the antenna to synchronously rotate along with the cable take-up and pay-off reel; and the fixed bracket is used for keeping the relative positions of the mobile intelligent terminal and the device fixed. The cable and the underwater mobile intelligent terminal are adopted to perform information interaction in an electromagnetic wave wireless connection mode, and an underwater cable winding and unwinding structure is adopted on the basis, so that the problem that the safety and maneuverability are seriously insufficient is solved to a great extent.

A magnetic induction (MI) wireless communications device including: an electrical power source; an electronic control unit powered by the power source; an electrical boost converter powered by the power source and controlled by the control unit for boosting an output voltage of the power source to a boosted voltage that is higher than the output voltage; an electrical energy storage powered by the boost converter and separate from the power source, and configured for storing energy from the boost converter at the boosted voltage; a transmit antenna element configured to transmit wireless signals through the earth using MI from in the hole using the stored energy from the electrical energy storage; and a switching element controlled by the control unit and configured to release the stored energy from the energy storage into the transmit antenna element when controlled by the control unit.

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.

The invention discloses an antenna device with an angle adjusting function, an underwater vehicle and an angle adjusting method, and belongs to the technical field of underwater vehicles, the antenna device comprises an antenna rotating shaft, an antenna body and a driving device, the antenna rotating shaft is installed at the end of the underwater vehicle, the axis of the antenna rotating shaft is perpendicular to the pitching section of the underwater vehicle, and the antenna body is installed on the antenna rotating shaft. The driving device is connected with the antenna rotating shaft and drives the antenna rotating shaft to rotate, the antenna body is in a straight rod shape, the end of the antenna body is connected with the antenna rotating shaft, and the antenna body is driven by the antenna rotating shaft to swing in a pitching section of the underwater vehicle so as to change the included angle between the antenna body and the axis of the underwater vehicle. The antenna angle is dynamically adjusted in real time, the communication performance of the underwater vehicle is optimized, the maneuverability is improved, the communication range is expanded, the stability and reliability of the system are improved, the energy consumption is reduced, the adaptability is enhanced, and the method is an innovative design for remarkably improving the overall performance of the underwater vehicle.

The present invention provides a bidirectional lens antenna and a multi-channel implementation method thereof, the antenna comprising antenna group 1, antenna group 2, a fixing mechanism and a waveguide, the antenna group 1 and the antenna group 2 are centrally symmetrically arranged, and both include a lens and a feed source, the lens is a spindle-shaped structure with a small diameter at both ends and a large diameter in the middle, the feed sources of the antenna group 1 and the antenna group 2 are arranged between the lenses of the antenna group 1 and the antenna group 2, and the signal transmission directions of the two feed sources are opposite; the fixing mechanism is used to install the lens, the feed source and connect the antenna group 1 and the antenna group 2; the waveguide sleeve is arranged outside the lens of the antenna group 1 and the antenna group 2, and is arranged with a gap between the lenses, and shields covering the lenses are also provided at both ends of the waveguide. The present invention can achieve multi-channel bidirectional coverage, and has the performance of low wind resistance, high gain, high directional pattern consistency, high aperture surface efficiency, etc.; and has low material requirements and is easy to implement; it is easy to assemble, low cost, and easy to mass produce.

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.

A pulsed ion current antenna includes an enclosed racetrack having an interior configured to be placed under vacuum. The enclosed racetrack has an ion injection zone, a beam merging zone, a first beam bending zone, a beam return zone, and a second beam bending zone. An ion source is provided at an end of the ion injection zone. Two parallel magnet plates are provided in each of the first and second beam bending zones, configured to produce a respective magnetic field that bends a path of travel of an ion beam within the enclosed racetrack. A plurality of loop coils are configured to generate magnetic fields to shape travel of ions within the enclosed racetrack such that ions from the ion source that are injected through the ion injection zone are merged in the beam merging zone into an ion beam within the enclosed racetrack.

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 discloses an antenna convenient to install and maintain, and relates to the technical field of antennae, the antenna comprises an antenna housing, damping mechanisms, a lifting mechanism, a fixing plate, a sensing oscillator mechanism and a signal enhancement mechanism, the left and right ends of the outer wall of the antenna housing are fixedly connected with the damping mechanisms, and the bottoms of the damping mechanisms are fixedly connected with the lifting mechanism. The left end and the right end in the antenna housing are fixedly connected with fixing plates, the right end of the fixing plate at the left end in the antenna housing is fixedly connected with a sensing oscillator mechanism, the left upper end in the antenna housing is fixedly connected with a signal enhancement mechanism, the signal enhancement mechanism is arranged on the left side of the fixing plate at the left end in the antenna housing, and the sensing oscillator mechanism is arranged. The diameter of the spring oscillator is reduced, and the spring oscillator is wound into the spiral line, so that the inductance of the spring oscillator is increased, the radiation efficiency of the antenna is improved, and the antenna can better receive and transmit signals in a tunnel environment.

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 discloses a magnetic bar antenna structure, which belongs to the technical field of communication, and comprises a connecting seat and three magnetic bar antennas, the magnetic bar antennas are magnetic bars which are orthogonal in pairs and are wound with coils, and the magnetic bar antennas are fixed on the connecting seat made of a non-magnetic material; the magnetic bar antennas are externally connected with resonance circuits respectively. Each resonance circuit comprises a resonance capacitor and a resonance inductor. The communication method of the magnetic bar antenna structure comprises the following steps: determining communication parameters according to communication requirements, and obtaining structure parameters of a magnetic bar antenna; the communication parameters comprise the minimum frequency bandwidth; calculating the distributed inductance of the magnetic rod antenna according to the obtained structural parameters; calculating a frequency bandwidth according to the calculated distributed inductance; judging whether the structural parameters of the magnetic bar antenna meet communication requirements or not according to the calculated frequency bandwidth; and when the calculated frequency bandwidth is greater than the obtained minimum frequency bandwidth, determining that the structural parameters of the magnetic bar antenna meet communication requirements. The problem that an existing communication coil is unstable in structure or high in manufacturing difficulty can be solved.

The invention relates to a device which can be used in urban distribution and waste management networks such as sewerage, rainwater, waste collection, etc., without requiring an external wired power line, an external communication line or an external sensor connection, which can be activated in a plug-and-play manner, which can transfer safe and precise measurements with very low power consumption, and which can be used safely in forecasting, early warning, analysis, planning and management works by evaluating the change of data from other units it works with according to time and space.

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.

An improved antenna device of an underwater vehicle comprises an antenna base, an antenna body rotationally connected with one end of the antenna base and a driving device arranged in the antenna base and connected with the antenna body, and horizontal movement of the driving device is converted into rotation movement of the antenna body to achieve lifting of an antenna. According to the invention, the antenna can be automatically lifted when the torpedo tube of the underwater vehicle is recycled, the integration of communication, positioning, navigation and position indication can be realized, and the interference between the antennas is reduced.

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 discloses an efficient parallel excitation seawater monopole antenna and wireless communication equipment, the antenna comprises a seawater monopole, a shunt excitation feed structure, a magnetic ring, a metal floor, a dielectric plate and a power divider feed network, the seawater monopole is arranged in the middle of the shunt excitation feed structure; the metal floor is arranged on the upper surface of the dielectric plate, the power divider feed network is arranged on the lower surface of the dielectric plate, the power divider feed network is used for feeding to the shunt excitation feed structure, and the seawater monopole and the bottom of the shunt excitation feed structure penetrate through the metal floor and are flush with the bottom of the dielectric plate. According to the invention, a shunt excitation feed structure is utilized, the dynamism, high efficiency and good reconfigurable capability of the seawater monopole antenna are realized, and the seawater monopole antenna has the advantages of wide frequency band, simple structure, high radiation efficiency and good reconfigurable capability.

A subsea control system for transmitting and receiving subsea related data to and from a surface control system includes a connecting Subsea Electronic Module (SEM) in connection with a high-speed communications conduit. The connecting SEM receives and transmits the subsea related data to and from the surface control system via the high-speed communications conduit. A plurality of processing SEMs for which each is connected to the connecting SEM to receive and transmit the subsea related data. A portion of the connection between each processing SEM and the connecting SEM includes a high-speed connection, wherein the receiving and transmitting of subsea related data between the connecting SEM and the processing SEMs on the high-speed connection is in compliance with the IEEE 802.3cg standard as of the effective date of filing of this patent.

The invention relates to a cover (11) in particular for construction, further in particular for drainage devices (10) for draining liquid, with a radio unit (12) which can be inserted or is inserted into an opening (13) of the cover (11) and comprises the following: - at least one antenna support housing (14), and - at least one antenna (15) having at least one fundamental frequency, which is arranged in the antenna support housing (14) and is designed to receive or transmit radio signals, in particular at least one first and one second antenna (15a, 15b), wherein the at least one antenna (15) has at least one resonant frequency in use due to its arrangement in the antenna support housing (14) and / or in the cover (11), wherein the fundamental frequency of the antenna (15) is 0.3% to 30% higher than the resonant frequency.