Disclosed herein to a strain sensor and a method for fabricating the strain sensor. According to an embodiment of the present disclosure, there is provided a strain sensor. The strain sensor comprising: a stretchable piezoresistor formed by a composite of a conducting nanocarbon filler distributed within a matrix of an insulating elastomer; and a stretchable electrode which is formed by a composite of a metal filler distributed within the matrix of the insulating elastomer and is partially inserted into both ends of the stretchable piezoresistor, wherein resistance increases due to a longitudinal tensile strain of the piezoresistor.

The disclosure relates to a force measurement device including central portion, fixing portion, first and second sensing portions, and first and second electromechanical elements. The first sensing portion has first natural frequency. The first sensing portion is connected to the central portion. The second sensing portion has a second natural frequency. The second sensing portion is connected to the first sensing portion and the fixing portion. The first electromechanical element is disposed on the first sensing portion to measure a first vibration amplitude. The second electromechanical element is disposed on the second sensing portion to measure a second vibration amplitude. When the central portion is subjected to a first force, the first vibration amplitude is larger than the second vibration amplitude. When the central portion is subjected to a second force, the first vibration amplitude is smaller than the second vibration amplitude.

The invention relates to a padding for a motor vehicle seat having a sheet for measuring multizone pressure. The sheet has a flexible support layer, with a first electrode having first contact elements, a second electrode having second contact elements and a plurality of intermediate contact elements having piezoresistive properties, each of the intermediate elements being inserted between a first and a second element to form a plurality of pressure sensors. The support layer is made of mesh. The first electrode is made from conductive ink printed on the support layer. The second electrode is made from printed conductive ink, and the intermediate contact elements are made from printed conductive ink with less conductivity than the inks of the electrodes.

Matrix pressure sensor with neural network, and calibration method

Matrix pressure sensor (1), comprising: a matrix (2) of tactile pixels (10) at least some of which have a reciprocal crosstalk effect between them, a neural network (30) for processing an image (I.sub.P_MES) of the response from the sensor and providing a corrected image (I.sub.P_COR), this network having been trained from an augmented database (BD.sub.AUG) comprising: real homogeneous pressing data measured by applying a homogeneous pressure (P.sub.R) to at least some of the pixels, better still to all of the pixels of the matrix, and additional partial pressing data produced through simulation by applying binary masks (MAS) to the real homogeneous pressing data, so as to simulate partial pressing without a crosstalk effect with the pixels situated outside partial pressing areas.

Matrix pressure sensor with neural network, and calibration method

Matrix pressure sensor (1), comprising: a matrix (2) of tactile pixels (10) at least some of which have a reciprocal crosstalk effect between them, a neural network (30) for processing an image (I.sub.P_MES) of the response from the sensor and providing a corrected image (I.sub.P_COR), this network having been trained from an augmented database (BD.sub.AUG) comprising: real homogeneous pressing data measured by applying a homogeneous pressure (P.sub.R) to at least some of the pixels, better still to all of the pixels of the matrix, and additional partial pressing data produced through simulation by applying binary masks (MAS) to the real homogeneous pressing data, so as to simulate partial pressing without a crosstalk effect with the pixels situated outside partial pressing areas.

Disclosed herein is a piezoresistive pressure sensor, including: a continuous piezoresistive foam layer; an electrode array layer, on one side of which the continuous piezoresistive foam layer is disposed; and an artificial leather layer as cover layer, which is disposed on the continuous piezoresistive foam layer; where the continuous piezoresistive foam layer is made by doping the foam with conductive materials. The piezoresistive pressure sensor can provide overall 2D-pressure mapping in a large area and has good flexibility and reliability to be combined with soft surfaces.

Disclosed herein is a piezoresistive pressure sensor, including: a continuous piezoresistive foam layer; an electrode array layer, on one side of which the continuous piezoresistive foam layer is disposed; and an artificial leather layer as cover layer, which is disposed on the continuous piezoresistive foam layer; where the continuous piezoresistive foam layer is made by doping the foam with conductive materials. The piezoresistive pressure sensor can provide overall 2D-pressure mapping in a large area and has good flexibility and reliability to be combined with soft surfaces.

A sensor element for a cutting tool, the sensor element having a hard portion having a working surface and at least one diamond crystal at least partially embedded in the hard portion, the at least one diamond crystal being arranged to generate a piezoresistive signal in response to the working surface engaging external material in use.

A sensor element for a cutting tool, the sensor element having a hard portion having a working surface and at least one diamond crystal at least partially embedded in the hard portion, the at least one diamond crystal being arranged to generate a piezoresistive signal in response to the working surface engaging external material in use.

A fibre-reinforced polymer composite comprising fibres bound within a solid polymer matrix, wherein at least some of the fibres are in contact with graphene, and wherein the composite changes electrical resistance when deformed.