A sensor assembly for measuring a torsion of a rotor blade of a wind turbine generator system includes a first light source configured to generate light and a first transmitter-side polarizer disposed downstream thereof in a direction of light propagation and configured to generate linearly polarized light as a first transmission light. A second light source is configured to generate unpolarized light as a second transmission light. First and second detector elements are arranged and adapted to receive the first and second transmission light. A first receiver-side polarizer is disposed upstream of the first detector element in the direction of light propagation and a second receiver-side polarizer is disposed upstream of the second detector element in the direction of light propagation. An orientation of a polarization plane of the first receiver-side polarizer and an orientation of a polarization plane of the second receiver-side polarizer are different from one another.

A sensor system provides measurement of building interstory drift based on a laser beam impinging on a discrete diode sensor array. The diode sensor array determines the location at which a projected laser bean strikes the array, which provides a direct measurement of interstory drift. The diode sensor array is a two dimensional array of discrete diodes that allow the location of an impinging laser beam to be very accurately tracked as the beam moves back-and-forth across the diode array. Local rotations of the laser source that result from rotations of structural members (e.g. floor beam rotation) are appropriately corrected for. This allows accurate, dynamic measurements of the interstory drift between two floor levels of a shaking building.

A testing device for testing seals, in particular tubbing seals, which seals have at least one anchoring foot. The testing device can be easily and cost-effectively adjusted to various seals by using plates with a recess, in which correspondingly configured plate elements are detachably inserted, so that different groove shapes scan be reproduced. The recess thus acts as a kind of “universal groove”, which can be adjusted to the respective geometry of the sealing profile to be tested by means of the plate elements, if necessary with the assistance of a curing or curable material.

A building settling detection system having at least one sensor configured between a guide rail track of an elevator system and a pit of the elevator system and a controller in communication with the at least one sensor, the controller configured to monitor an output of the at least one sensor and transmit a notification to a remote location when the output of the at least one sensor meets or exceeds a predetermined threshold indicating that the predetermined threshold is met or exceeded.

A method of processing a signal is disclosed. The method comprises receiving a signal obtained from measuring a structure under a given set of environmental and/or operational conditions, the signal comprising a set of amplitude values which depend on position in the signal and adjusting the amplitude value each of at least two of the amplitude values independently according to the position of the amplitude value in the signal and according to the given environmental and/or operational conditions.

A mobile fixture configured to move a structure in a manufacturing environment may include a motorized base configured to move on a surface and a support system connected to the motorized base, the support system being configured to support the structure, the support system being configured to position the structure along at least one of an X-axis, a Y-axis, and a Z-axis, the support system being configured to position the structure about the Z-axis, and the support system being configured to provide free rotation of the structure about at least one of the X-axis and the Y-axis.

A utility pole monitoring device comprising a body adapted to couple to a utility pole, a vibration device arranged on the body and configured to generate vibrations on or in the utility pole, a sensor arranged on the body for measuring the vibrations within the utility pole generated by the vibration device, and a controller for providing an initialization signal to the vibration device, and receive measured data from the sensor.

An image-based structural health monitoring system and method are disclosed herein. The image-based structural health monitoring system includes a marker image acquisition unit, a marker coordinate calculation unit, a shape function determination unit, and a structural health evaluation unit. The marker image acquisition unit acquires marker images of markers attached onto the surface of a structure. The marker coordinate calculation unit calculates the coordinates of the markers in the marker images. The shape function determination unit determines a shape function by performing spline interpolation based on the calculated marker coordinates. The structural health evaluation unit evaluates the structural health of the structure by calculating the strain or stress of the structure based on the radius of curvature calculated at each location on the determined shape function.

System and method for monitoring the condition of electricity conductor support systems, i.e. towers, in a power network distribution system employing a tower structure integrity sensor assemblage. The system allows for identifying particular portions of a structural system for maintenance attention. The tower sensors allow identification of structural failures of electricity transmission towers.

This disclosure relates to fluid conduit that incorporates sensors printed on an exterior wall of the fluid conduit configured to sense an operating parameter of the fluid conduit. A wireless communication device communicatively connected to the printed electronic material is configured to wirelessly transmit the operating parameter to a mobile device.