A method of measuring tides and inland water levels is provided. The method comprises a computer receiving a first measurement of an angle formed by a first ray comprising a vertical fixed piling and a second ray formed by a downward sloping ramp of known length, a lower end of the ramp contacting a surface of a dock float and the surface representing a plane contacting the fixed piling at a 90-degree angle at a first meeting point. The computer then calculates, based on the first measurement, based on the ramp length, and based on the 90-degree angle, a first distance from the first meeting point to a vertex of the angle. The computer later receives a second measurement of the angle, wherein the plane meets the piling at a second meeting point. The computer calculates a second distance and expressing a difference between two distances as tidal change.

A device and methods of placing the device for indicating tidal water depth is described. The device having a body in a vertical orientation, with a top, bottom, and at least one viewing surface, with a measurement scale of numerals and marks displayed on the at least one viewing surface, where the numerals increase in value in a direction from the bottom towards the top of the body.

In an array-type underwater apparatus for monitoring deformation of a reservoir landslide, an anchor is buried at an underwater monitoring point in a landslide mass, and a floating shell is configured to float on a water surface. A GPS sensor is configured to transmit and receive a GPS signal to obtain a real-time position of the floating shell, a water temperature sensor is used to obtain a water temperature-time relationship, and a gravity wave gauge is used to obtain a wave height-time relationship. An upper end of a pull cord is securely connected to the floating shell via a displacement compensation mechanism, and a lower end of the pull cord is securely connected to the anchor. The displacement compensation mechanism compensates for a displacement after the floating shell floats with a wave. An encoder-type displacement meter measures a real-time distance between the encoder-type displacement meter and the anchor.

A platform, system, method, and computer readable media is provided which is configured for monitoring water level height of one or more bodies of water. In a version the system generally comprises one or more of the following components: (a) a plurality of sensor nodes, each sensor node associated with a predetermined geographical location near water, wherein each sensor node comprises: (i) a detector configured to collect environmental data pertaining to changes in water surface height; and (ii) a telemetry module configured to wirelessly transmit the environmental data collected by the detector; (b) a gateway device configured to receive and route the environmental data, the gateway device comprising a gateway device processor and non-transitory computer readable storage media encoded with a computer program including instructions executable by the gateway device processor to create a gateway device application comprising: (i) a software module configured to receive the environmental data; (ii) a software module configured to apply an algorithm to the environmental data to parse, clean and aggregate environmental data; (iii) a software module configured to wirelessly transmit the environmental data; (c) a cloud based platform configured to support real-time stream processing of sensor node environmental data, the cloud based platform comprising one or more cloud based servers comprising a cloud server processor and non-transitory computer readable storage media encoded with a computer program including instructions executable by the cloud server processor to create a server application comprising: (i) a software module configured to receive the environmental data; (ii) a software module configured to apply an algorithm to the environmental data to determine an environmental trend or condition; (iii) a software module configured to generate an environmental data report comprising environmental trend or condition; and (iv) a software module configured to transmit the environmental data report when certain environmental data parameters exceed predefined thresholds in the form of an alert; and (d) a device comprising a report processor configured to provide a report application comprising a software module configured to receive and display the environmental date report.

An up-down flapping wingtip is provided for a ground effect vehicle. The wingtip is positionable at an anhedral angle to control the wingtip clearance from ground. Variable wingtip clearance reduces the risk of damage due to collision with the ground or water, thereby permitting more efficient flight at lower altitude with an equivalent safety. The wingtip is positioned by a wingtip flap and an actuator. The wingtip anhedral angle is controlled by a flight control system. A sensor is included for determining whether an object lies in the path of the wingtip. The sensor communicates with the flight control system in order to vary the flapping angle of the wingtip to increase clearance from the ground or water, thus avoiding impact with the object. The wingtip anhedral angle is reduced to increase the wingspan for flight out of ground effect.

A new GNSS-based real-time high-precision wave measurement method, wherein the GNSS phase, pseudo-range, Doppler frequency shift observations and broadcast ephemerides are collected by a GNSS receiver, and antenna carried by a sea surface carrier; the three-dimensional speeds of a carrier are acquired using an epoch difference of phase observations; and wave element information are then solved. The wave element information can also be obtained by integrating the speeds for a certain duration and removing a linear trend term to obtain a time-dependent displacement variations. No additional precise differential correction is needed, thereby saving on service costs and communication costs of precise differential corrections. High-precision wave element information is obtained in real time, and locally stored in a buoy or periodically returned by communication, thereby expanding the working range of GNSS-based ocean wave measurement.

A device and method of using same having an inertial measurement unit (IMU), a controller, an activator, and an absolute position sensor configured to measure fluid-body waves. The controller calculates its orientation in a relative frame using data obtained from the IMU and fixed-point arithmetic. The controller transforms the relative orientation information into absolute units using data obtained from the absolute sensor and fixed-point arithmetic, producing wave measurements. The controller may then select a subset of wave measurements for transmission via an optional communications mechanism to a remote user.

A measuring device for wave energy conversion performance of a comb-typed permeable breakwater with arcuate walls is provided. The measuring device includes four parts: the comb-type permeable breakwater with arcuate walls, a wave height measuring instrument and pressure sensor fixing and adjusting apparatus, a wave height measuring instrument data collecting and processing apparatus and a pressure sensor data collecting and processing apparatus. The comb-typed permeable breakwater includes combined arc-shaped caissons, partition plates, a back plate, a fixing bottom plate and fixing screws. The wave height measuring instrument data collecting and processing apparatus processes data collected by a wave height measuring instrument and outputs for display. The pressure sensor data collecting and processing apparatus analyzes data collected by a pressure sensor and outputs for display. The measuring device has a stable structure, convenient operation and high experimental accuracy.

Provided is an artificial intelligence overtopping prediction device including first and second pressure measurement parts 103 and 105 configured to measure a collision pressure of waves colliding with a marine structure 10 and a pressure of waves introduced into a road surface 20, an overtopping alert part 109 configured to collect images around the overtopping prediction device 100 and output an alert sound, an information collection and control part 107 including a drone storage 170 configured to fly the drone 202, and a collection controller 160 configured to control the overtopping prediction device 100, receive and store the wave pressure information and the overtopping amount information, and transmit the information to an overtopping prediction system 500 to predict and generate overtopping prediction information, and a frame part 101 including a support frame 110. Also, disclosed herein is an overtopping prediction system using the artificial intelligence overtopping prediction device 100.

The invention is a system for measuring boat wake and generating a meaningful representation of boat wake for watercraft operators. The invention includes a sensor mounted in a fixed location above the surface of an adjacent body of water. The apparatus further includes a programmable logic controller to evaluate the measurements collected by the sensor. The measurements are compared to each other to determine the maximum and minimum wake heights across a set time interval. The difference between the max and min distance is converted to inches and this is the wake height value which is broadcast via antenna to a display station. The display station receives the broadcast and displays the wake height value in a location and size visible to the operator of the boat.