137results 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.

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 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.

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.)

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.

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.

In one aspect, an antenna may include a waveguide with a dielectric material disposed within the waveguide, where the dielectric material may include a dielectric constant matched or near-matched to a dielectric constant of liquid water. The antenna can selectively be configured to communicate using one or more very high frequency (VHF) or one or more ultra high frequency (UHF) radio frequencies through liquid water.

The present invention relates to a multi-frequency antenna for multi-network integration deployment of urban underground integrated pipe corridors, including: a double-layer radiation unit, including a first electric dipole structure and a second electric dipole structure that are symmetrical to each other; an η-shaped feeding unit, which is arranged between the first electric dipole structure and the second electric dipole structure, and the bottom of the η-shaped feeding unit is connected to the inner conductor probe of the feeding coaxial connector in the double-layer radiation unit, for realizing coupled feeding of the double-layer radiation unit; a "凵"-shaped floor unit, which is arranged below the η-shaped feeding unit and the double-layer radiation unit, for reflecting the electromagnetic waves radiated by the double-layer radiation unit to form directional radiation, and at the same time connected with the double-layer radiation unit to form a magnetic dipole structure, which is complementary to the electromagnetic field radiated by the first to second electric dipole structures of the double-layer radiation unit in space, so as to improve the working bandwidth of the antenna and the symmetry of the radiation pattern. The present invention can be widely used in the field of electronic technology.

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.

The invention relates to a mining multi-band double-ring sleeve microstrip antenna, and belongs to the technical field of wireless communication. The antenna comprises a monopole structure for loading a load, double annular sleeve structures symmetrically distributed on two sides of the monopole structure, a ground plane structure etched with two gaps, and a dielectric substrate. The monopole structure is loaded with a hexagonal metal structure and a symmetrical triangular metal gradient structure; two types of grooves are etched in the metal structure of the sleeve, and comprise long and thin rectangular grooves which are periodically arranged and symmetrical flag-shaped grooves in the two sides; the grounding surface structure is etched with three types of grooves, including a rectangular groove, a flag-shaped groove and an open rectangular groove. Wherein the double-annular sleeve structure comprises a plurality of annular structures, a plurality of resonance frequency points are added for the antenna, and the frequency points are influenced by the length and the width of the groove and the perimeter of the annular sleeve structure; meanwhile, the bandwidth performance of the antenna is improved by modifying the ground structure. The gradient structure on the monopole structure improves the impedance matching of the antenna and expands the frequency band of the antenna.

The present invention discloses an antenna convenient for installation and maintenance, which relates to the technical field of antennas and includes an antenna cover, a shock absorption mechanism, a lifting mechanism, a fixing plate, a loading dipole mechanism and a signal enhancement mechanism. Shock absorption mechanisms are fixedly connected to both the left and right ends of the outer wall of the antenna cover. A lifting mechanism is fixedly connected to the bottom of the shock absorption mechanism. Fixing plates are fixedly connected to both the left and right ends inside the antenna cover. A loading dipole mechanism is fixedly connected to the right end of the fixing plate on the left end inside the antenna cover. A signal enhancement mechanism is fixedly connected to the upper left end inside the antenna cover, and the signal enhancement mechanism is arranged on the left side of the fixing plate on the left end inside the antenna cover. The loading dipole mechanism is provided. By making the diameter of the spring dipole itself thinner and winding it into a helix, the inductance of the spring dipole itself is increased, and the radiation efficiency of the antenna is improved, so that it can better receive and transmit signals in a tunnel environment.

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).