An apparatus externally detects the presence of a fault or malfunction in a gas turbine using the sound of air passing through vanes. The apparatus includes a sound sensor configured to sense a sound; a signal converter configured to convert the sensed sound into a digital signal; a data processor configured to perform a sound quality evaluation by analyzing a sound quality of the digital signal; and a display configured to display a result of the sound quality evaluation. The gas turbine includes a compressor housed in a compressor casing in which an inlet guide vane (IGV) assembly and a variable guide vane (VGV) assembly are installed. The sound sensor includes a plurality of microphones are installed outside the compressor casing at positions adjacent to at least one of a vane of the IGV assembly and a vane of the VGV assembly.

An apparatus externally detects the presence of a fault or malfunction in a gas turbine using the sound of air passing through vanes. The apparatus includes a sound sensor configured to sense a sound; a signal converter configured to convert the sensed sound into a digital signal; a data processor configured to perform a sound quality evaluation by analyzing a sound quality of the digital signal; and a display configured to display a result of the sound quality evaluation. The gas turbine includes a compressor housed in a compressor casing in which an inlet guide vane (IGV) assembly and a variable guide vane (VGV) assembly are installed. The sound sensor includes a plurality of microphones are installed outside the compressor casing at positions adjacent to at least one of a vane of the IGV assembly and a vane of the VGV assembly.

A driving control apparatus, a device, an optical module, and a driving control method will be provided, the driving control apparatus including: an acquiring unit to acquire a detection signal depending on a detection result of sensing a position of a driving target object; a driving control unit to generate a driving signal to move the driving target object to a target position based on the detection signal; an oscillation detecting unit to detect oscillation in a signal at a predetermined object point on a signal path from the detection signal to the driving signal; and an oscillation suppressing unit to suppress oscillation of the signal path according to detection of the oscillation.

A driving control apparatus, a device, an optical module, and a driving control method will be provided, the driving control apparatus including: an acquiring unit to acquire a detection signal depending on a detection result of sensing a position of a driving target object; a driving control unit to generate a driving signal to move the driving target object to a target position based on the detection signal; an oscillation detecting unit to detect oscillation in a signal at a predetermined object point on a signal path from the detection signal to the driving signal; and an oscillation suppressing unit to suppress oscillation of the signal path according to detection of the oscillation.

In an embodiment, one or more computer-readable storage medium comprising a plurality of instructions to cause an apparatus, in response to execution by one or more processors of the apparatus, to receive sounds emanating from one or more motors included in an unmanned aerial vehicle (UAV) during operation of the one or more motors; predict a number of operational cycles remaining before the one or more motors is to fail based on analysis of the sounds; and, based on the determination of the number of operational cycles remaining, restrict the UAV from normal use. The one or more motors comprises a vertical or horizontal propulsion motor of the UAV.

In an embodiment, one or more computer-readable storage medium comprising a plurality of instructions to cause an apparatus, in response to execution by one or more processors of the apparatus, to receive sounds emanating from one or more motors included in an unmanned aerial vehicle (UAV) during operation of the one or more motors; predict a number of operational cycles remaining before the one or more motors is to fail based on analysis of the sounds; and, based on the determination of the number of operational cycles remaining, restrict the UAV from normal use. The one or more motors comprises a vertical or horizontal propulsion motor of the UAV.

A device and method to mitigate transient events in a transported medium of fluids and gases subjected to surges, and over pressure events caused by the transient state of a transported medium in a continuous pipeline, where the device has one or more concentrically positioned multilayered composite pipes encased in an outer spool pipe with an annulus space between the spool pipe and the multilayered composite pipes, with flanged adaptors at each end of the device for inline installation in a pipeline, with a management system for receiving, processing and transmitting information gathered in combination with existing pipeline monitoring, and acoustical detection system for receiving and processing of acoustic transmission due to an acoustical wave. Mitigation of pressure events is achieved by energy dissipation and expansion of the multilayered composite pipes and reduction of amplification of pressure waves is achieved by initiation of active counter waves by expansion of the multilayered composite pipes to sinusoidal shape.

A workspace assembly includes at least a first sound sensor located in a first facility space, at least one communication device located within the first space, and a processor in communication with the at least a first sound sensor and the communication device. The processor is adapted to compare the volume of sound emanating from within the first space to a threshold level and to generate a signal via the communication device when the volume of sound emanating from within the first space exceeds the threshold level. The processor also periodically automatically adjusts the threshold level.

A workspace assembly includes at least a first sound sensor located in a first facility space, at least one communication device located within the first space, and a processor in communication with the at least a first sound sensor and the communication device. The processor is adapted to compare the volume of sound emanating from within the first space to a threshold level and to generate a signal via the communication device when the volume of sound emanating from within the first space exceeds the threshold level. The processor also periodically automatically adjusts the threshold level.

A vibration dose measurement apparatus 10 for an operator's hand 1 comprises a sensing assembly 20 connected to a control unit 25. The sensing assembly 20 comprises an accelerometer 21, gyroscope 22, and gripping force sensor 23 and may be packaged within a protective housing (not shown). By monitoring output of the sensor assembly 20, the vibration dose experienced by the hand 1 can be estimated. In the present invention, the provision of gripping force sensor 23 allows for vibration dose measurement to be adjusted based on the output of gripping force sensor 23. This can therefore take into account the force applied by an operator in gripping machinery, which can impact significantly on the effective vibration dose.