In an example, a vehicle tire includes a tread portion, a sidewall portion, and a sensor module for estimating one or more parameters of the tire. The sensor module includes a detector patch that includes one or more capacitors, each of which has an electrostatic capacity that is variable due to at least deformation of each capacitor. The sensor module also includes an electronics unit connected to each capacitor and configured to control the sensor module. The detector patch is adhered to an inside of at least one of the tread portion or the sidewall portion. At least one of the capacitors is located on the inside of the at least one of the tread portion or the sidewall portion. The electronics unit is configured to estimate at least one of the parameters based on the electrostatic capacity of each capacitor.

The present invention provides a pressure detection circuit including an oscillator unit, configured to output an oscillation signal as a count clock signal of a counter unit; and the counter unit, connected to the oscillator unit and configured to acquire a frequency of the oscillation signal and count. The pressure detection circuit further includes a comparator unit, connected to the counter unit, and configured to detect a voltage variation obtained by a pressure conversion, and send a signal to control the counter unit to count or stop counting; a voltage converter unit, connected to one input terminal of the comparator unit, and configured to supply a fixed or variable comparable voltage to the comparator unit; a constant current source charging unit, connected to the other input terminal of the comparator unit, and configured to supply a linearly and gradually increased comparison voltage to the comparator unit; a charge/discharge control unit, connected to the constant current source charging unit, and configured to control the constant current source charging unit to charge or discharge, such that the comparable voltage output by the voltage converter unit is compared to cause an output terminal of the comparator unit to enable counting of the counter unit; wherein the oscillator unit or the voltage converter unit further includes a pressure acquiring unit, as a component of the voltage converter unit or the oscillator unit, configured to convert a pressure into a variation of the comparable voltage or the frequency of the oscillation signal. The invention also provides a pressure input device pressure detection device. The invention has the technical effects of high sensitivity and resolution, power saving, and wide applicability.

Flexible and stretchable electronics, including supercapacitors and pressure sensors, are made using carbon nanostructures produced by providing a first composite structure which includes a temporary substrate and an array of carbon nanotubes arranged in a stack on a surface of the temporary substrate such that the stack of carbon nanotubes is oriented generally perpendicular to the surface of the temporary substrate, which may include silicon dioxide. The stack of carbon nanotubes is transferred from the temporary substrate to another substrate, which includes a curable polymer, thereby forming another composite structure comprising the stack of carbon nanotubes and the cured polymer.

A pseudo-piezoelectric d33 device includes a nano-gap, and a pair of integral and substantially parallel electrodes having a first sensing electrode and a second sensing electrode. The first sensing electrode and the second sensing electrode constitute a receiver. The nano-gap is disposed between the first sensing electrode and the second sensing electrode. An initial height of the nano-gap is smaller than or equal to 100 nanometers. The nano-gap is formed after a thermal reaction between a semiconductor material and a metal material to form a semiconductor-metal compound. The first sensing electrode of the receiver includes the semiconductor-metal compound to provide an integral capacitive sensing electrode to sense a capacitance change with the second sensing electrode and generate a sensing signal.

The invention relates to a method for monitoring the function of a capacitive pressure measurement cell (10) which has a measuring capacitor (C.sub.M) and a reference capacitor (C.sub.R), to which an internal excitation voltage U.sub.E0 in the form of an alternating square-wave signal is applied. According to the invention, in order to allow the detection of a disturbing influence on the measurement result owing to, in particular, moisture-induced leakage currents, it is proposed that the corresponding voltage values U.sub.1, U.sub.2 be sensed from the voltage signal U.sub.COM during the falling and/or rising signal curve at least two defined times t.sub.1, t.sub.2, and the two pairs of values t.sub.1; U.sub.1 and t.sub.2; U.sub.2 are used to determine a linear equation U=f(t), wherein the linear equation U=f(t)

within the falling or rising signal curve is used to calculate the time t.sub.x at which the voltage value U.sub.x set as a threshold value or switchover point in the comparator-oscillator (SG) is reached, wherein—either the time t.sub.x is compared with the actual switchover time of the comparator-oscillator (SG) and an error signal is generated in the event of significant deviation,—or the time t.sub.x is used to define a hypothetical switchover point of the comparator-oscillator (SG), from which a hypothetical working frequency is calculated, and an error signal is generated if there is significant deviation of said hypothetical working frequency from the actual working frequency of the comparator-oscillator (SG).

A three-axis sensor includes: a first detection layer having a first surface, and a second surface on side opposite to the first surface, and including a first sensing section of a capacitive type; a second detection layer having a first surface opposed to the second surface of the first detection laver, and including a second sensing section of the capacitive type; a first electrically conductive layer provided to be opposed to the first surface of the first detection layer; a second electrically conductive layer provided between the first detection layer and the second detection layer; a separation layer provided between the first detection layer and the second electrically conductive layer to separate the first detection layer and the second electrically conductive layer from each other; a first deformation layer that is provided between the first electrically conductive layer and the first detection layer, and is elastically deformed in accordance with pressure acting in a thickness direction of a sensor; and a second deformation layer that is provided between the second electrically conductive layer and the second detection layer, and is elastically deformed in accordance with pressure acting in the thickness direction of the sensor. A 25% CLD value of the separation layer is 10 or more times a 25% CLD value of the first deformation layer, and the 25% CLD value of the separation layer is 10 or more times a 25% CLD value of the second deformation layer.

A micromechanical component for a sensor device or microphone device. The micromechanical component includes a diaphragm with a diaphragm inner side to which an electrode structure is directly or indirectly connected; and a cavity that is formed at least in a volume that is exposed by at least one removed area of at least one sacrificial layer. At least one residual area made of at least one electrically insulating sacrificial layer material of the at least one sacrificial layer is also present at the micromechanical component, and including at least one insulation area made of at least one electrically insulating material that is not the same as the electrically insulating sacrificial layer material. The electrode structure is electrically insulated from the diaphragm, and/or the at least one residual area of the at least one sacrificial layer is delimited from the cavity, using the at least one insulation area.

A capacitive pressure sensor is provided. The capacitive pressure sensor comprises a dielectric layer, a light-transmitting first electrode, a second electrode, a display layer and a measuring device. The dielectric layer is made of a foam. The first electrode is disposed on a first surface of the dielectric layer, wherein a pressure is applied to the first electrode. The second electrode is disposed on a second surface of the dielectric layer opposite to the first surface. The second electrode includes a plurality of unit electrodes having a predetermined shape. The display layer is disposed between the first electrode and the dielectric layer or between the second electrode and the dielectric layer. The measuring device is configured to detect a measurement value of a capacitance of the dielectric layer for each unit electrode by causing a potential difference between the first electrode and the second electrode.

A pressure detection module and an electronic device are provided. The pressure detection module is disposed between a support and an inner surface of a housing of the electronic device. The pressure detection module includes a first electrode, a second electrode, and a controller. The first electrode is fixed to an inner surface of a force input region of the housing, the second electrode is fixed to the support, and the second electrode is disposed opposite to the first electrode. The force input region of the housing is configured to drive the first electrode to move towards the second electrode based on a received external pressure. The controller is configured to determine a pressure detection result of the external pressure based on a capacitance change between the first electrode and the second electrode. The pressure detection module occupies small space in the electronic device, and is easy to mount.

A sensor includes a membrane electrode, a counter-electrode, and at least one spring. The sensor can include a structure; a membrane electrode, which is deformable as a consequence of pressure and which is in contact with the structure; a counter-electrode mechanically connected to the structure and separated from the membrane electrode by a gap; and at least one spring mechanically connected to the membrane electrode and the counter-electrode, so as to exert an elastic force between the membrane electrode and the counter-electrode.