A circuit configured to sense an input analog signal generated by a sensor at a first frequency and to generate an output digital signal indicative of the sensed input analog signal. The circuit includes a conditioning circuit, an ADC, a feedback circuit, and a low-pass filter. The conditioning circuit is configured to receive the input analog signal and to generate a conditioned analog signal. The ADC is configured to provide a converted digital signal based on the conditioned analog signal. The feedback circuit includes a band-pass filter configured to selectively detect a periodic signal at a second frequency higher than the first frequency and to act on the conditioning circuit to counter variations of the periodic signal at the second frequency. The low-pass filter is configured to filter out the periodic signal from the converted digital signal to generate the output digital signal.

A device for detecting wear of a wear member composed of electrically resistive material. The wear member comprises at least two electrodes separated from each other, where each electrode overlies, or is embedded in, an outer surface of the electrically resistive material. One of the electrodes is connected to a resistor at a measurement node to form a resistive voltage divider. A voltage measurement device measures a change in voltage at the measurement node, where the change is voltage is indicative of the degree of removal of resistive material from a face of the wear member and where the change in voltage is continuously variable and not limited to discrete wear levels.

A rollover alarming system, a rollover risk prediction method, and a rollover alarming method. An axle housing strain measurement unit measures strain values on both sides of an axle housing of a vehicle body. A roll angle measurement unit measures a roll angle of the vehicle body. A collection control unit is configured to collect the strain values on both sides of the axle housing of the vehicle body and the roll angle of the vehicle body, calculate a strain difference between the strain values according to the strain values on both sides of the axle housing of the vehicle body, and output a corresponding alarm control signal according to the strain difference between both sides of the axle housing of the vehicle body and the roll angle of the vehicle body. An alarm unit is configured to output a corresponding alarm signal according to the received alarm control signal.

A system and method for measuring rock volume change under microwave irradiation. The system includes a test cavity, a microwave control device, strain measurement devices, a measurement circuit, and a resistance strain gauge. The test cavity is of a sealed cavity structure, in which a rock specimen and the microwave control device are provided. The strain measurement device includes circumferential strain gauges and axial strain gauges, and is attached to the surface of the rock specimen. The measurement circuit is connected to the strain measurement devices by means of leads, and the resistance strain gauge. After microwaves emitted by the microwave control device act on the rock specimen, the plurality of circumferential strain gauges and the axial strain gauges collect data from the rock specimen, and the volume change of the rock specimen can be obtained in combination with the measurement circuit and the resistance strain gauge.

A flexible display apparatus and a control method therefor. The flexible display apparatus comprises: a flexible display panel (10); a bending sensor (11), that is configured to sense bending information of the flexible display panel (10); and a processor, that is coupled to the bending sensor (11), configured to receive the bending information of the bending sensor (11), and determines whether the bending information is valid bending information, and if so, then a currently running application program is controlled according to the valid bending information to perform a corresponding operation. By bending the flexible display panel (10), an application program is controlled to perform a corresponding operation, achieving a convenient, accurate, and effective operation, and improving user experience.

According to the present disclosure, a strain gauge has: a flexible substrate; a resistor formed on the substrate; and a pair of electrodes formed on the substrate and electrically connected with the resistor via conductive traces, and, in this strain gauge, the conductive traces include a first metal layer and a second metal layer formed over an upper surface of the first metal layer, and the second metal layer is formed in a pattern that is different from a pattern of the first metal layer.

A geosynthetic sensor that incorporates an arrangement of a first layer of lengths of electrically conductive geosynthetic and a second layer of lengths of electrically conductive geosynthetic where each said length undergoes a change in electrical resistance or capacitance when subject to changes in any one or more of: pressure; strain; water content; or temperature.

A sensor-enabled geogrid system for and method of monitoring the health, condition, and/or status of infrastructure is disclosed. In some embodiments, the sensor-enabled geogrid system includes a sensor-enabled geogrid that further includes a geogrid holding an arrangement of one or more sensors. The sensor-enabled geogrid system further includes a communication means or network for collecting information and/or data from the sensor enabled geogrid about the health, condition, and/or status of infrastructure. Further, a method of using the presently disclosed sensor-enabled geogrid system for monitoring the health, condition, and/or status of infrastructure is provided.

A substrate for use in an electronic skin is disclosed herein. The substrate comprises a base polymer layer, and a first intermediate polymer layer attached to the base polymer layer by a first adhesive layer. The first intermediate polymer layer comprises a first intermediate polymer in which electron-rich groups are linked directly to one another or by optionally substituted C.sub.1-4 alkanediyl groups. A first conductive layer is attached to the first intermediate polymer layer by a second adhesive layer or by multiple second adhesive layers between which a second intermediate polymer layer or a second conductive layer is disposed.

A measurement device is disclosed for measuring a change in one or more of a circumference or a perimeter of at least a portion of an object having a surface. The measurement device includes a first part for attachment to the object, a second part having a first portion moveable relative to a first portion of the first part, a determining device for determining a displacement of the first portion of the second part relative to the first portion of the first part caused by the object changing, and a biasing device for biasing the first part and the second part towards engagement. The measured displacement is for use in determining the change in one or more of a circumference or a perimeter of the object.