37results about "Sonar signalling devices" patented technology

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.

The invention discloses a rapid and accurate riprap damming method under a large water depth, relates to the technical field of water conservancy projects and underwater construction, and solves the problems that the construction efficiency can be improved due to the fact that water riprap is often adopted under the large water depth (more than 40 meters) and a complex flow state, but stones are prone to drifting in the sinking process, and the construction efficiency is affected. Therefore, the device cannot be accurately placed at a preset position. On one hand, the stability and construction quality of a dam body structure are affected, and on the other hand, a large amount of stone is wasted. Combined positioning (dynamic positioning system + anchoring), sonar equipment and a holder control sub-module are introduced, the drifting distance is calculated through an intelligent algorithm, the arm length and angle of the floating crane are adjusted in time, and it is ensured that stones are accurately immersed to the preset position. According to the method, the positioning precision and the construction efficiency in the riprap process can be remarkably improved, materials can be saved, and the method is suitable for the fields of water conservancy projects, ocean engineering, channel improvement and the like and has wide application prospects and remarkable economic benefits.

Floating body device, characterized in that it comprises a floating body main body (1) and a detection sensor (2), wherein the detection sensor (2) is used for detecting obstacle information around the floating body main body (1), wherein the detection sensor (2) is arranged at the bottom of the floating body main body (1) or its side surface such that the detection sensor (2) is deeper than the water surface, wherein the vertical distance H of the detection sensor (2) relative to the water surface 0 <H≤13 cm beträgt, wobei, wenn auf der Wasseroberfläche vor dem Schwimmkörper-Hauptkörper (1) in dessen Bewegungsrichtung eine Rohrleitung vorhanden ist, der Schwimmkörper-Hauptkörper (1) eine Ausweichaktion ausführt, um der Rohrleitung auszuweichen.

Systems and methods for conveniently providing anchoring assistance onboard a watercraft are provided herein. An example system includes a display and a processor in communication with a marine system. The processor is configured to receive marine data from the marine system and / or one or more user inputs and cause the display to show one or more anchoring locations with visual indications of the anchorage quality index based on at least the marine data and / or user inputs. The one or more anchoring locations may be shown as a heat map overlaid on a map. The system may use real-time marine data, environmental data, weather data, tide data, etc. to dynamically adjust the anchoring locations and anchorage quality index. The system may enable convenient and helpful suggestions and notifications to the user when anchoring a watercraft. Some examples provide automatic deployment of an anchoring system and monitoring of a current anchoring.

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.

Systems and methods for conveniently providing anchoring assistance onboard a watercraft are provided herein. An example system includes a display and a processor in communication with a marine system. The processor is configured to receive marine data from the marine system and / or one or more user inputs and cause the display to show one or more anchoring locations with visual indications of the anchorage quality index based on at least the marine data and / or user inputs. The one or more anchoring locations may be shown as a heat map overlaid on a map. The system may use real-time marine data, environmental data, weather data, tide data, etc. to dynamically adjust the anchoring locations and anchorage quality index. The system may enable convenient and helpful suggestions and notifications to the user when anchoring a watercraft. Some examples provide automatic deployment of an anchoring system and monitoring of a current anchoring.

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 sonar device including a tow cable and a towed body elongate along a longitudinal axis from a first longitudinal end to a second longitudinal end. The towed body includes a plurality of electroacoustic transducers aligned along the longitudinal axis and is connected to the tow cable, so it is able, when it is towed and fully submerged, to be oriented along a vertical axis. At least one towed body is connected to the tow cable by a first hanger and a second hanger. First ends of the first and second hangers are connected to the tow cable and a second end of the first hanger is attached to the towed body at a first fixing point near the first longitudinal end and a second end of the second hanger is attached to the towed body at a second fixing point near the second longitudinal end.

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).

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.

Provided is a polar sailing ship. The polar sailing ship comprises: a plow unit formed in the lower portion of the bow of the ship; and an echo sounder unit provided in the plow unit, and for transmitting an ultrasonic pulse to the seabed, receiving the returned ultrasonic pulse when the transmitted ultrasonic pulse is reflected from the seabed and returned, and calculating the depth of the seabed using the time the ultrasonic pulse took to return.

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.

An underwater drift tracking system based on a maritime positioning platform is disclosed. The underwater drift tracking system based on a maritime positioning platform includes 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, and 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.

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.

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.

To obtain a sound-transmitting member having a wide sound-transmitting band in a high frequency region. A planar sound-transmitting member (10) having sound-transmitting properties includes two skin layers (102A) and (102B), N + 1 core layers (106A) and (106B), and N intermediate layers (104) (N = 1), in which the core layer and the intermediate layer being alternately stacked between the skin layers. The skin layers (102A) and (102B) and the intermediate layer (104) are formed of carbon fiber reinforced plastics (CFRP), which is a material having a higher elastic modulus than the core layers (106A) and (106B) formed of rubber.

An underwater drift tracking system based on a maritime positioning platform is disclosed. The underwater drift tracking system based on a maritime positioning platform includes 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, and 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.

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.

Provided is an ice-going ship. The ice-going ship comprises: a skeg part formed on the lower portion of the stern of the ship; and an echo sounder part which is provided in the skeg part, transmits an ultrasonic pulse to the seabed, receives the transmitted ultrasonic pulse when the transmitted ultrasonic pulse is reflected from the seabed and returns, and calculates the water depth of the seabed on the basis of the time it takes for the ultrasonic pulse to return.

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.