20results about "Sonar signalling devices" patented technology

A maritime drone as uncrewed surface vessel is provided. The maritime drone has a control and a monohull. The control is configured such that a movement and / or an operation of the maritime drone is autonomously controlled by the control. The monohull has a casing which encloses an interior volume of the maritime drone. The maritime drone comprises at least one sonar sensor which is coupled to the control and is configured for detecting underwater objects. The at least one sonar sensor is arranged within the maritime drone. The maritime drone has furthermore compact dimensions, namely a maximum length of 200 cm, a maximum width of 60 cm, a maximum height of 60 cm and a maximum weight that the maritime drone can be transported by a single person. The maritime drone comprises a self-righting functionality, which is based at least on a shape of the monohull and a weight distribution of the maritime drone.

A watercraft with a hull for providing buoyancy to the watercraft, the hull comprising a modular keel receiver arranged on the underside of the hull. The watercraft has a power source and a controller. The modular keel receiver comprises a retaining means configured to receive and removably retain a keel module, a power interface configured to provide power from the power source to a keel module, and, a controller interface configured to communicate data between the controller and a keel module. A keel module for a watercraft, the keel module comprising an engagement means configured to engage with a retaining means of a watercraft.

A marine vessel control system operable to be used with a shallow water anchor and a motor. The marine vessel control system comprising a memory and a processor. The processor is configured to receive a user command to maintain a position of a marine vessel, receive sonar data, determine a water depth relative to a water bottom based on the sonar data in response to receiving the user command, and transmit a command to use the shallow water anchor and / or the motor based on the water depth.

The invention relates to a subsea load monitoring apparatus (1) comprising: - a load sensor (40) having a first end (41) and a second end (42); - a central processing unit (61) configured for processing measurements from the load sensor (40); - a battery (60) for powering the central processing unit (61); - an activation device (63) being configured for activating the central processing unit (61) from an idle operational mode to an active operational mode; - a first and a second load attachment means (51, 52) connected to the first and second end (41, 42) of the load sensor (40), respectively; and - an output device (90) for the processed measurements from the load sensor (40). The invention relates furthermore to a subsea load monitoring system (10) and methods for use of the subsea load monitoring system (10).

Proposed is an underwater drift tracking system based on a maritime positioning platform. The underwater drift tracking system may include a plurality of underwater drifting objects configured to transmit sound wave signals including their own water depth information by using sound wave communication while drifting underwater. The underwater drift tracking system may also include a maritime drift tracker configured to track real-time underwater locations of the underwater drifting objects by moving on the sea under its own power, receiving the transmitted sound wave signals from the plurality of underwater drifting objects, and calculating absolute location information of the plurality of underwater drifting objects using the received sound wave signals.

A subsea load monitoring apparatus having: a load sensor having a first end and a second end; a central processing unit configured for processing measurements from the load sensor; a battery for powering the central processing unit; an activation device being configured for activating the central processing unit from an idle operational mode to an active operational mode; a first and a second load attachment means connected to the first and second end of the load sensor, respectively; and an output device for the processed measurements from the load sensor. A subsea load monitoring system and methods for use of the subsea load monitoring system.

A watercraft mounting system that embodies a moving mounting platform and a protective hull cavity which provides protection, prevents damage and improves storage of data collection systems.

The invention relates to a system (18) comprising a towed body (20) for towing behind a water vehicle (50) and a signal processing unit (54). The towed body (20) has a pair of depressors (24), wherein each of the depressors (24) has a variable inclination angle in order to allow a depth control of the towed body. The signal processing unit is designed to actuate the depressors of the pair of depressors (24) independently of each other.

A watercraft 100 with a hull 110 for providing buoyancy to the watercraft, the hull comprising a modular keel receiver 140 arranged on the underside of the hull. The watercraft has a power source 120 and a controller 130. The modular keel receiver comprises a retaining means 142 configured to receive and removably retain a keel module (250, Fig 2a), a power interface 124 configured to provide power from the power source to a keel module, and, a controller interface 134 configured to communicate data between the controller and a keel module. A keel module for a watercraft is also disclosed, the keel module comprising an engagement means (470, Fig 4) configured to engage with a retaining means of a watercraft.

Example systems and methods are provided herein for generating paths for watercraft. Such systems include a memory and a processor, and the processor is configured to determine a set of condition parameters that each correspond to desired conditions for a potential navigation path, select at least one condition parameter from the set of condition parameters, and then determine and apply a constraint relaxation to the selected condition parameter(s) to form constraint relaxed condition parameter(s), each of which increases a range of input values that satisfy the corresponding desired conditions for the potential navigation path. The processor is also configured to determine a region based on an updated set of condition parameters, including the constraint relaxed condition parameter, and then to determine a navigation path within the region.

An electronic chart system (ECS) is configured to be coupled to a user interface. In one embodiment, the ECS is implemented using a logic device configured to obtain a predicted fix for a watercraft position. Based on the predicted fix, the logic device obtains an electronic chart of an area containing a location of the predicted fix. The logic device searches the electronic chart for static objects whose ranges and / or bearings are viewable from the watercraft at the predicted fix location. Other systems, methods, and devices are also provided.

According to research findings, it is known that human hearing ability is not restricted by the Fourier uncertainty principle. The present disclosure intends to propose the sound processing method and device using the DJ transform method, a new frequency extraction method from understanding of the human hearing ability that improves the temporal resolution as well as the frequency resolution simultaneously based on the operating principle of hair cells constituting the cochlea.

The present invention provides a cable planning method based a fast marching method applied with simulated annealing (FMM / SA) algorithm. In the FMM / SA algorithm-based cable planning method, the FMM used to obtain the optimal submarine cable path with the lowest life-cycle cost, and the SA algorithm is used to continuously adjust the weight of each design consideration with the aim to achieve an optimal cable path that is as close as possible to a real-life cable path which has a history of cost-effectiveness and resilience. The set of weights contributed to the optimal cable path is then used as an optimal set of weights of design considerations for cable path planning. The FMM / SA algorithm-based cable planning method can provide a computationally effective approach which has lower computation costs and better performance in generating cable paths with optimal life-cycle cost and reliability.

Examples devices and systems are provided herein for mounting a transducer within a hull of a watercraft. Such devices and systems include a housing that defines an interior volume, a biasing mechanism, and a retractable portion disposed at least partially within the interior volume and connected to the biasing mechanism. The retractable portion includes an acoustic element and an acoustic fluid. The retractable portion is biased to a first position from a second position. When the retractable portion is in the first position, the acoustic element is at least partially positioned outside of the hull of the watercraft and aimed in a facing direction to capture sonar return data corresponding to a portion of an underwater environment. When the retractable portion is in the second position, the acoustic element is positioned fully inside the hull of the watercraft so as to protect the device from external elements.

A system of a sonar sensor or an array of sensors integrated directly into the struts and / or foils of a hydrofoil boat. The sensors can be mounted on the leading edge of the strut, the leading edge of the foil, or the tips of the foils and struts. This placement provides a stable platform for beam-forming sonar that can operate in multiple directions (horizontal, vertical, forward, side, down) without adding extra drag. The sonar arrays consist of one transmitter and a linear array of receiver units. The reception direction can be electronically swept, allowing for the differentiation of the strength of received acoustic energy from a transmitted waveform, thus enabling the determination of the direction of an object and creating a 2D sonar image. This beam-forming technique, applied in this specific geometry for high-speed hydrofoiling and allows for long-range detection of passable areas without slowing or stopping the boat.

An underwater drift tracking system based on a marine positioning platform is disclosed. The underwater drift tracking system based on a marine positioning platform includes a plurality of underwater drifting objects that emit sonic signals including their own water depth information using sonic communication while drifting in the water, and a marine drift tracker that moves on the sea by its own power, receives the sonic signals emitted from the plurality of underwater drifting objects, and calculates absolute position information of the plurality of underwater drifting objects using the received sonic signals to track the real-time underwater positions of the underwater drifting objects.

A marine seismic data acquisition system and method of conducting a marine seismic survey are disclosed. The system incorporates one or more surface vessels, and a plurality of autonomous nodes for acquiring seismic data at one or more seabed locations. Each node comprises a USBL, SSBL or SBL transducer and USBL, SSBL or SBL acoustic modem. A first acoustic positioning system is operable between one of the surface vessels and the nodes, the first acoustic positioning system being a USBL, SSBL or SBL system. Each node of the plurality of autonomous nodes has a USBL, SSBL or SBL beacon address, with respective groups of nodes having the same beacon address. The nodes are configured such that no two nodes with the same beacon address can actively communicate over an associated USBL, SSBL or SBL modem at the same time.

A floating body apparatus and a floating body system are provided. The apparatus includes a floating body and a detection sensor. The detection sensor for detects information of an obstacle around the floating body, the detection sensor is arranged at a bottom or a side surface of the floating body, so as to be lower than a water surface, a vertical distance H between the detection sensor and the water surface satisfies 0<H≤13 cm, and when a pipe line exists on the water surface at a front end of a movement direction of the floating body, the floating body performs an avoidance action to avoid the pipe line.

The invention relates to a towed body (20) for towing behind a water vehicle, comprising a first pair of depressors (24) and a second pair of depressors (26). Each of the depressors (24, 26) has a variable inclination angle in order to allow a depth control of the towed body (20). Each of the depressors of the first pair (24) and the second pair (26) of depressors is designed to be actuated such that the inclination angle thereof is set independently of the inclination angle of one of the other depressors.

A watercraft mounting system that embodies a moving mounting platform and a protective hull cavity which provides protection, prevents damage and improves storage of data collection systems.