A remote control vehicle includes a vehicle body and an acoustic vibration detection device. The vehicle body includes a protection cover. The acoustic vibration detection device is located at a side of the protection cover away from an external surface of the protection cover and configured to detect acoustic vibration generated when the protection cover is hit by an external object. The acoustic vibration detection device includes a housing body, a damping assembly, and an acoustic sensor. The housing body includes a chamber. The acoustic sensor includes a microphone arranged in the chamber through the damping assembly.

A system for early detection of onset of oscillatory instabilities in practical devices is described. The system consists of a measuring device (102), an instability detection unit (104) and a control unit (106). The measuring device (102) is configured to generate signals corresponding to the dynamics happening inside the practical device. The instability detection unit (104) along with an amplitude estimation unit (130) is configured to diagnose the stability of the practical device from the signals that are generated by the measuring device (102). Further, the control unit (106) is configured to control various operating parameters in the practical device based on the information obtained from the instability detection unit (104).

A system for early detection of onset of oscillatory instabilities in practical devices is described. The system consists of a measuring device (102), an instability detection unit (104) and a control unit (106). The measuring device (102) is configured to generate signals corresponding to the dynamics happening inside the practical device. The instability detection unit (104) along with an amplitude estimation unit (130) is configured to diagnose the stability of the practical device from the signals that are generated by the measuring device (102). Further, the control unit (106) is configured to control various operating parameters in the practical device based on the information obtained from the instability detection unit (104).

An intelligent bed monitoring system and device are provided in this disclosure. The system is applied to a bed frame, and the bed frame includes a bed board. The intelligent bed monitoring system includes a first server, an intelligent bed monitoring device and an electronic device. The intelligent bed monitoring device is communicated with the first server and the electronic device. The intelligent bed monitoring device further includes a pressure sensor, a processor, and a controlling module. The processor is electrically connected with the pressure sensor and the controlling module. The pressure sensor is configured to detect a vibration signal. The processor is configured to generate a physiological information according to the vibration signal, and transmit the physiological information to the first server via a communication interface. The controlling module is configured to control the bed board to adjust the bed board into a plurality of modes.

A wireless sensor is disclosed for monitoring the health and performance of vibratory screen systems. Systems and techniques disclosed herein generate power from the vibrations of a vibratory screen system, selectable switch between a plurality of power sources, and strategically control voltage input and power expenditures to prolong the life of a measuring module while avoiding power cables and battery replacements. Avoiding power cables and battery replacements provides measuring modules that perform well in the harsh environment of a vibratory screen system because power cable destruction is avoided and battery swapping caused operational shutdowns are circumvented.

A railcar acoustic monitoring system including a first trackside frame assembly that includes a first outer frame assembly, a second outer frame assembly, and a first inner frame assembly. The first outer frame assembly including a first microphone assembly positioned on a first outer side of the first rail of the railroad track, the first microphone assembly oriented to receive acoustic signals associated with the passing train. The second outer frame assembly including a second microphone assembly positioned on a second outer side of a second rail of the railroad track, the second microphone assembly oriented to receive acoustic signals associated with the passing train. The first inner frame assembly including a first housing, a third microphone assembly oriented to receive acoustic signals emanating from the first rail, and a fourth microphone assembly oriented to receive acoustic signals associated with the passing train.

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 computer-implemented method for identifying a defect of a passing train via acoustic monitoring. The method may include the steps of: receiving data from the passing train within a zone of observance using an array of microphone assemblies of an acoustic monitoring system that are positioned around a section of the track. The method may further include processing the data to determine pressure levels received by each of the array of microphone assemblies. The method may further include calculating a theoretical pressure level for a plurality of points within a three-dimensional space for each microphone of the array of microphone assemblies. The method may further include determining one or more locations within the three-dimensional coordinate space that represents an origin of a noise source indicating the defect. And the method may further include determining a type of defect based on the acoustic signatures.

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.