A system comprising: a wearable element designed to be worn on a body region of a subject; an array of sensors arranged at specified locations, attached to the wearable element; and a detection module in communication with each of the sensors in the array and configured to determine a parameter indicative of an injury to the body region, based on the signal. The parameter indicative of an injury to the body region may include at least in part, on at least one of: (i) an impact event associated with said subject calculated from the signal, (ii) a location of each of the at least one of the sensors relative to the body region, and a timing of the generating in the signal generated by the at least one sensor.

A sensor apparatus is provided. Multiple opposite and self-powered sensors are provided in another aspect of the present apparatus. A further aspect employs a sensor apparatus including a first pair of flexible piezoelectric sensors attached to opposite sides of an exterior surface of a workpiece and at least a second pair of flexible piezoelectric sensors attached to opposite sides of the exterior surface of the workpiece. Another aspect of the present apparatus uses pairs of thin film piezoelectric sensors which are configured to detect bending curvature of a workpiece in at least two dimensions by sending voltage output signals from both of the sensors of a first pair and/or both of the sensors of at least a second pair to a controller and/or electrical circuit.

A sensor apparatus includes a first of a plurality of layers having a top layer, a bottom layer, and at least one intermediate layer having an electrical conductor layer, each of the top layer, the bottom layer, and the at least one intermediate layer is disposed in direct contact with a respective adjacent layer. A second of the plurality of layers is disposed in direct contact with the first plurality of layers such that the bottom layer of the second plurality of layers is disposed in direct contact with the top layer of the first plurality of layers. The first and second plurality of layers are productive of a piezoelectric voltage absent of an external current producing device and in response to being deformed, and are productive of a change in capacitance in response to being deformed.

Systems, methods, and computer-readable media are described for predicting a neurological injury to a participant in an activity. The activity can be, for example, an athletic activity that involves repeated, high-impact collisions between participants. Sensor data reflecting interactions between participants in the activity is received from various wearable and non-wearable sensors. The sensor data is evaluated in conjunction with a baseline neurological risk profile of a participant to determine a likelihood that the participant has suffered a potential neurological injury. If this likelihood meets a threshold risk level, an onsite request/response test is initiated to glean more information relating to the participant's condition. Response data associated with the onsite test is cognitively evaluated to determine an updated likelihood of neurological injury to the participant and a follow-up action is determined based on the updated likelihood of neurological injury.

In one general aspect, a composite foam comprises a non-layered mixture of a polymeric foam with a plurality of voids; and a plurality of conductive fillers disposed in the polymeric foam. The conductive fillers are disposed in an even manner from outer surface to outer surface. In some implementations, the conductive fillers are up to 25% by weight of the composite foam. In some implementations, the composite foam may be used as padding. In some implementations, the composite foam may be used as a strain gauge.

A test apparatus is provided. The test apparatus includes a fluid release mechanism having a nozzle. The test apparatus furthers include a pressure plate coupled to a pressure sensor and a grille mounting plate disposed between the nozzle and the pressure plate. The grille mounting plate is disposed at a first distance from the pressure plate and a second distance from the nozzle. When activated, the fluid release mechanism releases a cleaning fluid at a first pressure through the nozzle and towards a first speaker grille mounted on the grille mounting plate. The first speaker grille includes a first hole pattern which diffuses the released cleaning fluid, causing the diffused cleaning fluid to strike the pressure plate at a second pressure. The pressure sensor records the second pressure when the diffused cleaning fluid strikes the pressure plate.

A processing head (10) for a forestry machine (1) is intended to process a tree (9) having a trunk (92) with a longitudinal direction (90), branches (94) extending from the trunk (92) transversely to the longitudinal direction (90) and knots (96) extending into the trunk (92). The processing head (10) comprises: a frame (2) having a seat (20) for receiving the trunk (92) of the tree (9) to be processed; a motorised device for moving the trunk (92) relative to the seat (20), by advancing the trunk (92) through the seat (20) along the longitudinal direction (90) of the trunk (92); one or more blades (26) for cutting the branches (94) from the trunk (92) as the trunk (92) advances; a detection system for detecting positions of the branches (94) and/or of the knots (96) on the trunk (92) as the trunk (92) advances. Information on the positions of the branches (94) and/or of the knots (96) is processed to determine an identification code that is based on said positions and that refers to said trunk (92) or to a segment obtained from said trunk (92). The identification code is comparable against a code determined a posteriori for a specific trunk or for a specific segment of trunk, in order to establish whether the specific trunk or the specific segment of trunk corresponds to said trunk (92) or to said segment of trunk (92). The information on the positions of branches (94) and/or of knots (96) can also be used to determine, during a processing of the tree (9), one or more positions on the trunk (92) in which to cut the trunk (92) perpendicularly or transversely to the longitudinal direction (90), which is to say to optimise the truncation of the trunk (92).

A system for measuring cellular forces exerted on a surface comprising: a deformable sensor that has a deformable surface adapted to deform on application of a cellular force, and an optical detector for optically detecting deformation of the surface.

Disclosed is a tamper evident backing system, comprising an adhesive backing, the adhesive backing having a main body and sectioned portions, wherein the adhesive backing includes an outer surface is configured to adhere to a second surface, and wherein upon removal of an attached adhesive backing, said sectioned portions are configured to detach from main body and remain on said second surface.

A method for determining a mechanical load to which a component was exposed. The component comprises at least one sensor that is arranged in a force flow of the mechanical load and that emits a measurement signal in the event of a mechanical load. The method comprises providing an increase function, which establishes a relationship between the measurement signal and the mechanical load for an increasing load, providing a decrease function, which establishes a relationship between the measurement signal and the mechanical load for a decreasing load, identifying reversal points at which a change in the measurement signal changes a sign, saving the measurement value and the corresponding increase functional value or decrease functional value at the reversal point, providing a new increase function or a new decrease function by displacing and compressing the increase function or the decrease function, wherein the compression is executed with regards to both the measurement signal and the mechanical load, and determining the mechanical load at least also using the saved values.