31results about "Radio signalling devices" patented technology

The present invention relates to a salvage system for a life jacket capable of enabling quick rescue of a victim by quickly finding a victim wearing the life jacket using an artificial satellite and displaying an electronic map provided with the position of the victim and the image of the victim on a screen in real time, when a marine accident or an aircraft accident occurs, and more specifically, to the life jacket, with a marine position tracking terminal attached thereto, which transmits and receives radio signals to and from a GPS satellite and a relay satellite to track the position of the victim, and allowing greater buoyancy to be generated in the head and the chest regions on the surface of the water, when wearing it. A salvage system for a life jacket according to the present invention comprises: a life jacket; a marine position tracking terminal, attached to the life jacket, which transmits a rescue signal and an inherent ID stored in a microcomputer to a plurality of GPS satellites via a rescue signal transmitter; a relay satellite receiving the signal from the marine position tracking terminal and the GPS satellites to calculate a coordinate position of a victim wearing the life jacket and provide it to an integrated geographic information system (GIS), and monitor the image of the victim using the calculated coordinate position; and a central control center receiving in not formation on an electronic map provided with the coordinate position of the victim and the monitored image of the victim from the relay satellite and displaying them on a status screen in real time, thereby enabling follow-up measures for early rescue of the victim.

A method of locating an underwater based system, the method including determining the underwater based system's geo-location, encoding the underwater based system's geo-location for RF transmission, encoding the underwater based system's geo-location for acoustic transmission, and transmitting RF and acoustic signals containing the encoded geo-location to a receiving station. A locator for locating an underwater based system including a buoy, a global positioning system having an antenna and a receiver, an RF transmission system including an antenna and a transmitter, an underwater acoustic transducer, and a locator control unit adapted to determine the underwater based system's geo-location, encode the underwater based system's geo-location for RF transmission, encode the underwater based system's geo-location for acoustic transmission, and transmit RF and underwater acoustic signals containing the encoded geo-location.

The invention discloses an unmanned ship. The unmanned ship comprises a ship body whose center of gravity is in a lower position. A central controller as well as a detection module, a power module and a communication module are at least arranged in the ship body, wherein the detection module, the power module and the communication module are respectively connected with the central controller; the detection module is used for detecting underwater environment information; the power module is used for controlling the unmanned ship to act; the communication module is used for transmitting information obtained by the detection module to an external terminal and transmitting a control instruction of the external terminal to the central controller; and the central controller controls and coordinates each module to work according to the control instruction of the external terminal or the running state of the ship body. The unmanned ship has the advantages of flexible advancing action, strong function, large diving depth and compact and reasonable structural design. The invention further provides an unmanned ship system. The unmanned ship system comprises the external terminal and a base station; therefore, problems of the existing unmanned ship of single function, small diving depth and difficult signal transmission are avoided.

The invention discloses a data transmission device, method and system, and relates to the field of communications, and aim to better improve the downlink average throughput of a UE. According to the specific scheme, the method comprises: a determining unit determining downlink frequency offset according to a received uplink signal sent by terminal device, and determining second transmitting frequency according to the downlink frequency offset and first transmitting frequency; the transmitting unit transmitting a downlink signal to the terminal device based on the second transmitting frequencydetermined by the determining unit, so that the terminal device receives the downlink signal based on a receiving frequency corresponding to the first transmitting frequency; wherein the downlink signal at least comprises one of DMRS and downlink data. The method is used in the data transmission process.

The invention relates to the application field of unmanned ships, in particular to a new type of unmanned bacterial agent delivery ship and an operation method thereof, comprising: a monolithic ship, a control system, a feeding device, a transfer device, a speed change mechanism, a groove wheel mechanism, a filling In the present invention, the various mechanisms are connected through the control system to realize autonomous cruising and bacterial agent feeding operations. Provide power for the transfer device and cooperate with the transfer device to complete the transfer operation; through the filling machine, the liquid bacterial agent can be filled with a water-soluble film and placed in the observation water area at a fixed distance with the specially made degradable loading bottle of the present invention, which greatly reduces the The degradable loading bottle carries the solid-liquid biphasic bacterial agent to clean the waters and silt of different depths in an all-round way, and fundamentally solve the pollution problem.

The invention provides a submarine device with an escape boat. The submarine device comprises a submarine body, wherein a built-in pipeline is arranged in the submarine body; a lifting bracket is arranged at the bottom of the built-in pipeline; an outlet is formed in one end of the built-in pipeline; an automatic lifting door is arranged at the outlet; the escape boat is arranged in the built-in pipeline; a lifting button is arranged at the automatic lifting door and is electrically connected with a control unit; the control unit is electrically connected with a GPS positioning device, the automatic lifting door, an alarm device, the lifting bracket and oxygen making devices; the GPS positioning device and the alarm device are arranged in the submarine body; the oxygen making devices are arranged in the submarine body and the escape boat; the control unit is electrically connected with a remote control terminal through a wireless transmitting and receiving device. The submarine device with the escape boat is novel in design and high in safety.

The invention discloses an attack-type fire support unmanned boat that can be used in amphibious landing operations. A tethered drone and an aerodynamic ducted propeller; the aerodynamic ducted propeller includes a ducted body and a ducted propeller, the ducted propeller is connected to the output end of the engine, and an air rudder is arranged behind the ducted body. Beneficial effects of the present invention: unmanned, miniaturized, and reconnaissance are realized, and at the same time, the problem of lack of close-range fire support by the Marine Corps in the beach landing operation is solved, the launch preparation time is short, omnidirectional strike is realized, and shallow draft is adopted The flat-bottomed gliding ship type and aerodynamic ducted propellers improve the ability to pass through shoals and swamps. The tethered relay UAV is equivalent to a very high mast, which breaks the limitation of the curvature of the earth on radio and significantly improves the speed of unmanned boats. communication capabilities.

In a small boat emergency stop apparatus having an operator's cockpit and a passenger seat installed spaced apart from the cockpit, there are provided with an operator transmitter wearable by the operator to transmit a radio-wave signal of a predetermined strength, a passenger transmitters wearable by the passenger to transmit a radio-wave signal of the same predetermined strength and a receiver installed at a location closer to the cockpit than the passenger seat to receives the radio-wave signals transmitted by the operator and passenger transmitters successively. It is identified which of the operator and the passenger is a wearer of the transmitter and is then discriminated whether strength of the radio-wave signal transmitted from the identified wearer is smaller than a predetermined value. When it is, it is discriminated that emergency occurred in the wearer and an emergency action of engine stopping or engine speed reducing is performed.

The invention discloses a ship positioning navigation and safety early-warning alarm system. The system comprises an information acquisition unit, a master control unit, a display control unit, an ejection control unit, a wireless transmitting-receiving unit and a power management unit. According to the system, the information acquisition unit transmits acquired ship related information to the master control unit, the master control unit analyzes and processes different received information in real time, the different information is stored and then displayed by the display control unit, and when certain important information reaches a threshold, the master control unit excites related equipment to generate alarm information, and the alarm information can be stably transmitted to related equipment or system of a command center via the Beidou system and the like.