A method for controlling charge accumulation on a mobile platform in a tank containing a non-conductive, energetic substance includes configuring the mobile platform to include at least an electrical power supply and a charge accumulation control system. The power supplied from the electrical power supply to one or more electrical power consumers associated with the mobile platform adds an electrical charge to the mobile platform. The charge accumulation control system controls an accumulation of the electrical charge on the mobile platform by one of: (i) reducing the supplied power and preventing an increase in the supplied power later while the mobile platform is inside the tank, and (ii) disengaging the electrical power consumer(s) from the supplied power and preventing a reengagement of the supplied power with the electrical power consumer(s) later while the mobile platform is inside the tank.

A method of performing a selected task in a tank at least partially filled with an energetic substance includes, in part, configuring a mobile platform to be inherently safe by positioning spark-generating components in either or both of: (i) an inherently safe enclosure that prevents a spark occurring inside the inherently safe enclosure from passing to an exterior of the inherently safe enclosure, and (ii) a spark-neutralizing body formed of at least one non-flammable substance and positioned inside an enclosure, the spark-neutralizing body blocking direct contact between a spark from the enclosed spark-generating component and an energetic substance from occurring inside the at least one enclosure. The method also includes positioning at least one spark-generating component not inside any inherently safe enclosure that prevents a spark occurring inside the inherently safe enclosure from passing to an exterior of the inherently safe enclosure. The sparks are capable of igniting the energetic substances.

A method for inspecting a metal separator includes a step of detecting deflection of the metal separator with a height detector, a step of displacing the metal separator or an imaging device in a height direction according to the deflection of the metal separator to keep a distance between the imaging device and an imaging portion of the metal separator constant, and a step of imaging a weld portion with the imaging device.

A method of retrieving a mobile platform from a tank having a hatch and at least partially filled with a non-conductive, energetic substance includes configuring the mobile platform to include at least a retrieval system disposed at least partially on an enclosure. The retrieval system includes at least: a primary tether connected to a buoyant body and to the enclosure, and a secondary tether connected to the buoyant body and to the enclosure. The method further includes: predetermining a buoyant body retrieval zone within the tank, and positioning a released buoyant body within the buoyant body retrieval zone by using the primary tether. The method also includes retrieving the primary tether by using the buoyant body; using the primary tether to release the secondary tether; and inserting a retrieval member through the hatch to retrieve the buoyant body, the primary tether, and/or the secondary tether.

A display device includes a display unit, and a control unit that displays a flight route of a flying object flying while photographing surroundings of a crane on the display unit. The control unit is configured to display the crane and the flight route on the display unit, and to display the flight route in a display mode viewed from at least two different directions.

Disclosed is a defect inspection device according to an embodiment of the present disclosure. The defect inspection device includes: a robot arm including a hold unit for holding an object and a driving unit for moving the object; a first camera unit photographing an exterior of the object; an illumination unit irradiating light to the exterior of the object; and a control unit determining whether there is a defect in the object based on an image of the object photographed by the first camera unit.

An inspection system and method with a variable-diameter traveling robot for inspection of a natural gas pipeline. The inspection system includes a pipeline inspection robot, a cable reel, a hydraulic pump and an information acquisition control terminal. The pipeline inspection robot includes an electronic cabin and a traveling mechanism. The electronic cabin includes a first digital camera, a second digital camera, a first digital camera mounting plate, a second digital camera mounting plate, a drum, a printed circuit board, a magnetic flux leakage probe, and a backup battery. The traveling mechanism includes a first traveling part, a second traveling part, an inner ratchet, an inner ratchet base, a slider, a long shaft, a hydraulic cylinder, and a hydraulic pipe. The cable reel includes a power line, a conversion module, and a communication line. The information acquisition control terminal is a mobile terminal having an analysis module and a control module.

A method for localizing defects on a complex surface of an object may include: realizing an acquisition assembly with an electromagnetic wave emission device and an optoelectronic device for detecting electromagnetic waves reflected by the complex surface; defining a scan path at a distance from the complex surface; and during a defect search procedure: moving the acquisition assembly along the path; defining instants during the moving of the acquisition assembly at which the acquisition assembly acquires an image of the complex surface as a two-dimensional pixel matrix of the optoelectronic device; storing consecutive two-dimensional pixel matrices obtained along the path; storing coordinates of the acquisition assembly along the scan path and associating the coordinates with respective two-dimensional matrices of the consecutive two-dimensional pixel matrices; locating detects in the consecutive two-dimensional pixel matrices; and/or determining spatial coordinates of the defects detected in the matrix using a linear or linearizable transformation.

The disclosure relates to a reference plate for calibrating and/or checking a deflectometry sensor system, said deflectometry sensor system including an image generation device and a capturing device having at least one capturing element, wherein the reference plate includes a reflective surface, and wherein, for the purpose of checking at least one system parameter of said deflectometry sensor system, the reflective surface is provided with a predefined pattern including markings. A corresponding method for calibrating and/or checking a deflectometry sensor system is moreover indicated.

The present invention discloses an Unmanned Surface Vehicle (USV) for aquatic ecosystem monitoring and restoration and a control method for aquatic ecosystem restoration. A control cabin, a water-quality monitoring cabin, and a water treatment equipment compartment are arranged inside a cabin of a hull of the USV for aquatic ecosystem monitoring and restoration, and a water-surface photographing device and a remote communications device are arranged outside the cabin; the control cabin is connected to the water-quality monitoring cabin, the water-surface photographing device, and the water treatment equipment compartment; the water quality parameters include five conventional water quality parameters and eutrophication-based water quality parameters; and the remote communications device is connected to the water-quality monitoring cabin and the water treatment equipment compartment. The present invention can implement real-time, automatic, and dynamic aquatic ecosystem monitoring, early warning of the water pollution, and self-adaptive ecological restoration based on an artificial intelligent control algorithm.