The present invention relates to the field of conveyor(s), also known as belt transporters. In one form, the invention relates to conveyor(s) used in mines, quarries and/or ports which are typically hundreds of meters, or even kilometres long. In one particular aspect the present invention is suitable for use as applied to conveyor belts, parts and systems of a conveyor as well as methods of monitoring and communicating along conveyor(s). The invention relates to wear detection, systems and methods associated with wear detection.

A condition monitoring device for monitoring machinery includes a combination of on-board sensors and a condition monitoring module. The on-board sensors include modules for non-contact temperature, magnetic flux and 3-axis vibration sensing of the machinery. The condition monitoring module provides a condition monitoring signal containing information about an operating condition of the machinery, based upon a data synthesis condition monitoring technique that synthesizes non-contact temperature, magnetic flux and 3-axis vibration sensed data received from the combination of on-board sensors, determines a current operating condition of the machinery, and compares the current operating condition and the baseline operating condition of the machinery.

An early sign detection device includes a plurality of sensors, a data acquisition unit configured to acquire time series variation data of a physical amount from each of the plurality of sensors, a computation unit configured to compute an occurrence probability of a vibration mode involved in a sudden variant vibration of a detection subject from an amplitude or a phase of the time series variation data of the physical amount at each of the plurality of positions, and a detection unit configured to detect an early sign of the sudden variant vibration on the basis of the occurrence probability of the vibration mode. The plurality of sensors are respectively disposed at a plurality of positions of the detection subject and are each configured to measure the physical amount at a corresponding position of the plurality of positions.

In a method for monitoring an operating behavior of a tool holder, a resultant measurement axis signal is calculated using at least two measurement axis signals of at least two radially oriented measurement axes of a sensor provided in the tool holder. The monitoring is performed using the resultant measurement axis signal or the resultant.

Disclosed herein is a vibration monitoring and diagnosing system for monitoring conditions of a wind power generator and diagnosing a defective portion thereof using vibration characteristics obtained from acceleration sensors mounted to the wind power generator. A vibration-based defect detecting method may include: collecting vibration data of the wind power generator using the plurality of sensors; extracting a first characteristic value of a time domain based on the vibration data; extracting characteristic values in one or more frequency bands for a location of each sensor in a frequency domain or an envelope frequency domain if the first characteristic value is greater than a preset alarm setting value; and determining that a defect is present when at least one characteristic value of the characteristic values is greater than a preset normal value.

A sensor module, including a main body shell and a sensing device provided in the main body shell; the sensing device includes a sensor, an upper cover plate, a lower cover plate and a circuit plate; the sensor is mounted on the circuit plate; the upper cover plate and the lower cover plate are respectively mounted on the upper and lower sides of the circuit plate, and are configured to support the main body shell and fix the circuit plate; an accommodation cavity for storing an insulating fluid is provided between the upper cover plate and the circuit plate, between the upper cover plate and the sensor, and between the lower cover plate and the circuit plate; and a first acoustic window is provided at a portion of the upper cover plate located above the sensor. Further disclosed are a sensor assembly and an acoustic logging tool.

Technical solutions are described for autonomously monitoring health of a vehicle, such as a car, a truck and so on. An example computer-implemented method includes receiving sensor data of the vehicle. For example, the sensor data includes vibration data and microphone data. The vibration data measures vibration experienced by an occupant of the vehicle. The microphone data measures noises experienced by the occupant, including noises emanated by the vehicle. The method further includes accessing a predetermined performance data of the vehicle and determining a difference in the received sensor data and the predetermined performance data. The method further includes transmitting a notification of condition of the vehicle in response to the difference surpassing a predetermined threshold.

A vibration sensor device can be used with smartphones, tablets and computers with application software for measuring vibration frequency, damping coefficient and scale factor isolating the measurement to the specific area of the vibration sensor clamped to the vibrating system. Vibration sensor powered by the microphone bias found with CTIA and OMTP compatible systems and does not require batteries or external power.

A vibration sensor device can be used with smartphones, tablets and computers with application software for measuring vibration frequency, damping coefficient and scale factor isolating the measurement to the specific area of the vibration sensor clamped to the vibrating system. Vibration sensor powered by the microphone bias found with CTIA and OMTP compatible systems and does not require batteries or external power.

A method and apparatus for determining the location of a material located behind an obstruction. A plurality of acoustic resonators (6) having a known resonant frequency are dispersed in the material (3), the material to be located on a first side of the obstruction (2). An instrument (5) is provided at an opposite side of the obstruction to the material. The instrument emits an acoustic signal and measures a response. If the resonant frequency is detected, it is determined that the material is located substantially adjacent to the instrument. The apparatus may be used for determining the height of cement slurry located between a well casing wall and a borehole.