81 results about "Piezo electric" patented technology

The valve system, to be used as a suction valve and / or as a discharge valve in a reciprocating compressor, comprises a valve body, at least one sensor mounted on the valve body and configured to detect a parameter associated to operation of the valve device, and a wireless communication unit electrically coupled to the at least one sensor and configured to transmit information detected by the at least one sensor; the at least one sensor is associated with a fixing member that is inserted in holes of the valve body and that seals the holes. The innovative valve system may comprise further at least one energy harvesting system, which could be for example thermoelectric or piezoelectric, located preferably in or on or at the valve body.

A piezoelectric valve may be formed using semiconductor processing techniques such that the piezoelectric valve is biased in a normally closed configuration. Actuation of the piezoelectric valve may be achieved through the use of a piezoelectric-based actuation layer of the piezoelectric valve. The piezoelectric valve may be implemented in various use cases, such as a dispensing valve for precise drug delivery, a relief valve to reduce the occlusion effect in speaker-based devices (e.g., in-ear headphones), a pressure control valve, and / or another type of valve that is configured for microfluidic control, among other examples. The normally closed configuration of the piezoelectric valve enables the piezoelectric valve to operate as a normally closed valve with reduced power consumption.

The invention provides structures and synthesis of a class of piezoelectric monomers and COFs with fluorine-substituted side chains tethered on the peripheral position of an aromatic moiety (thus different functional side chains). The multi-fluoro groups on the mentioned piezoelectric COFs provide abundant piezoelectric active sites, which enable the application as the active layer for PENGs. The exemplary embodiments also provide a process for the fabrication of a piezoelectric COF and a process for the fabrication of the piezoelectric nanogenerator utilizing mentioned piezoelectric COF.

A painting robot is provided with painting head unit that has a plurality of nozzles to eject droplets and painting head that is provided with piezoelectric substrate to eject the droplets from nozzles, robot arm to move said painting head unit to a desired position, and paint supply mechanism that may be installed between robot arm and painting head unit. Also, paint supply mechanism is provided with paint supply channel to provide paint towards painting head, return flow channel to recover paint that was not discharged from nozzle, an air-operated paint regulator that has been installed in paint supply channel for which the valve opening position can be adjusted in response to the controlled air pressure, and orifice that has been installed on the downstream side of paint supply channel facing painting head side.

The invention relates to a photovoltaic and piezoelectric combined pavement photovoltaic module, and belongs to the technical field of new energy power generation. The photovoltaic tile comprises a bottom protection layer, a multi-layer stacked piezoelectric ceramic array, a photovoltaic tile base, an elastic protection layer, a photovoltaic cell array and a high-pressure-resistant light-transmitting plate from bottom to top, the photovoltaic cell array is arranged in the elastic protection layer; the photovoltaic brick base is provided with through holes arranged in an array, a spring is fixed in each through hole, each spring corresponds to one multi-layer stacked piezoelectric ceramic, and the two ends of each spring are in contact with the elastic protective layer and the multi-layer stacked piezoelectric ceramic respectively; the pavement photovoltaic module further comprises an external protection layer, and the bottom protection layer, the multilayer stacked piezoelectric ceramic array, the photovoltaic brick base, the spring, the elastic protection layer, the photovoltaic cell array and the high-pressure-resistant light-transmitting plate are stacked in the external protection layer. The piezoelectric ceramic is combined with the photovoltaic cell, vehicle rolling and solar energy are fully utilized, dual energy output is achieved, and a sustainable energy solution is provided for an intelligent city.

The present invention relates to a pest control composition comprising prallethrin, metofluthrin, and a solvent. The invention further relates to a pest control product comprising the pest control composition according to the invention and an emanation device, wherein the emanation device is selected from the group comprising an electric heating device, a piezo electric diffuser and an ambient emanation device, wherein the pest control composition is emanated from the emanation device. The invention also relates to the use of the pest control composition according to the invention or the pest control product according to the invention to kill, knock-down and / or repel insects.

A battery-operated utility meter for measuring an amount of a liquid delivered from a utility distribution network to a consumption site network. The utility meter comprises a flow tube with an inlet and an outlet for passage of the liquid and a first and a second piezoelectric ultrasonic transducer arranged at the flow tube. A measurement circuit is arranged to transmit and receive ultrasonic signals through the liquid in the flow tube via the piezoelectric ultrasonic transducers and a digital processing unit is arranged for calculating a flow rate of the liquid in the flow tube based on the signals received by the first measurement circuit. The first measurement circuit and the digital processing unit are operated with intervals, to perform a finite duration flow rate measurement. Further, the utility meter includes an analogue second measurement circuit arranged for detecting a pressure transient of the liquid in the flow tube using the first and / or the second piezo electric transducer. The utility meter is arranged to continuously operate the second measurement circuit in a time period in between two adjacent finite duration flow rate measurements, to perform an intermediate pressure transient detection having a duration which is longer than the duration of the finite duration flow rate measurements.

An energy harvesting system 60 comprises a transducer 100 arranged to provide an output signal in response to being deformed by an applied force, and a structure 300 in mechanical communication with the transducer. The structure is arranged to cause deformation of the transducer and comprises a first portion 310, a second portion 320 in contact with the transducer, and one or more third portions 330 connecting the first and second portions. The one or more third portions comprise one or more curved arms. The first portion may be centrally located in the structure and the second portion may be provided around the first portion. The first portion may be rotatable relative to the second portion and may be a shaft or hub. The third portion(s) may vary or taper towards the second portion. The transducer may be piezoelectric or magnetostrictive. The system may be used in a projectile or munition.

A patch pump utilizes piezoelectricity to dispense medicament from a cartridge syringe to a patient. Pump can include a plurality of piezoelectric elements that when energized cause linear motion of a pushrod that interfaces with the syringe in the cartridge to advance the syringe and dispense the medicament. The high torque generated by the piezoelectric elements is directly converted into the same amount of torque on the lead screw, so no torque increasing gear reduction system is needed and the pushrod utilized to drive the syringe can be contained within and connected directly to the motor assembly. Such a piezoelectric-based system can therefore be made smaller and with fewer moving parts than an electromagnetic motor of the same capability such that the pump has a smaller size than has heretofore been possible with prior art electromagnetic-based syringe pumps and other pumps that utilize gear reduction systems.

A workpiece support (18) for supporting a workpiece (14), the workpiece support (18) comprising a workpiece support body (54) and a workpiece support element (20) associated with the workpiece support body (54) for engaging the workpiece (14) and a piezo electric actuator (32) being associated with the workpiece support body (54) for moving the workpiece support element (20) for supporting the workpiece (14). The workpiece support body (54) comprising one or more flexures (44) that enable a movable portion (42) of the workpiece support body (54) to move when acted on by the piezo electric actuator (32) and to move the workpiece support element (20). The workpiece support (18) can comprise two or more workpiece support bodies (54) and a piezo electric actuator (32) being associated with each workpiece support body (54) for moving the respective workpiece support elements (20).

In an example, the present invention provides a laser system. The laser system has a source laser (e.g., CBC) coupled to first mirror device opposing a second mirror device and configured to generate a resonating laser beam between the first mirror and the second mirror. In an example, the system has a piezoelectric device configured to the second mirror device and characterized by a refractive e index such that one or more voids is changed by applying an energy to the piezo electric device to cause a change in a value of the refractive index, e.g., by more than 0.0001, to allow the resonating laser beam or a portion of the resonating laser to traverse through a portion of the second mirror device.

To provide an acoustic wave device capable of suppressing the occurrence of cracks.SOLUTION: An acoustic wave device 100 includes a substrate 10 having an upper surface 11 and a lower surface 12, a via wiring 32 penetrating the substrate 10 from the upper surface 11 to the lower surface 12, a piezoelectric layer 20 provided on the upper surface 11 and having a hole 24 that overlaps the via wiring 32 in a planar view and whose outline is located inside the outline of the via wiring 32 on the upper surface 11, and an acoustic wave element 50 provided on the piezoelectric layer 20 and connected to the via wiring 32.SELECTED DRAWING: Figure 1

The present disclosure provides a lens driving device of a piezoelectric USM for autofocus, comprising: a lens support portion for holding at least one camera lens; a piezoelectric USM portion, comprising a first piezoelectric USM portion and a second piezoelectric USM portion, the first piezoelectric USM portion and the second piezoelectric USM portion being used to move the lens support portion to a focal position of the lens in the optical axis direction of the lens; and a guide ball portion, comprising a plurality of guide ball members for receiving pressure from the first piezoelectric USM portion and the second piezoelectric USM portion, and maintaining smooth movement of the lens support portion in the optical axis direction, wherein the first piezoelectric USM portion and the second piezoelectric USM portion are respectively arranged near two corners of the lens support portion in the diagonal direction, the diagonal being located in a horizontal plane perpendicular to the optical axis direction and passing through the optical axis center point of the lens, and the guide ball portion is arranged at another corner of the lens support portion that is different from the two corners of the lens support portion. The present disclosure also provides a camera device.

The application provides a ferroelectric metal and a preparation method and application thereof. The ferroelectric metal of the application is composed of cubic silicon carbide crystals and doping elements doped therein, wherein the concentration of the doping elements is greater than or equal to 1*10 18 cm ‑3 The material of the application can be prepared by a chemical vapor deposition method, a high-temperature solution growth method, a solid-phase sintering method, a pulse laser deposition method and the like. Since the conductivity of metal, the switching characteristics of ferroelectric and the force-electric coupling characteristics of piezoelectric are integrated, the ferroelectric metal of the application has great application value in the fields of high-performance transducers, high-sensitivity sensors, low-power micro-electro-mechanical system (MEMS), next-generation multifunctional electronic devices and the like.

A touch panel, the touch panel includes a control substrate, a touch layer and a piezoelectric layer that are stacked; the control substrate includes a first substrate and a control circuit layer arranged on the first substrate, and the touch layer and the piezoelectric layer are located on the control substrate, the control circuit layer comprises a control circuit, and the control circuit is electrically connected with the touch layer and the piezo electric layer respectively, and is configured to apply electrical signals to the touch layer and the piezoelectric layer and / or receive electrical signals from the touch layer and the piezoelectric layer respectively. The touch panel can realize the global tactile feedback function, and has a simple structure and has the advantages of thinner, lighter, lower driving voltage, and lower power consumption.

Photonic integrated circuits (PICs) are provided that include silicon photonic structures such as a network of horizontal and vertical bus waveguides and micro-electro-mechanical-system (MEMS) actuated switching elements configured to selectively couple light between selected horizontal and vertical bus waveguides. The PICs of the present disclosure can be applied or used in a wide variety of fields including but not limited to fiber-optic communication, photonic computing, and light detection and ranging (LiDAR). The MEMS actuated switching elements can comprise piezoelectric actuators.

Provided is a low mass antigen detecting device for quickly and conveniently detecting various types of antigens. In a low mass antigen detecting device for detecting a low mass antigen through a sensor, the sensor includes a piezo-electric substrate, a sensing layer coupled to one surface of the piezo electric substrate and comprising at least one antigen-BSA, an input IDT electrode disposed at one side of the piezo-electric substrate to apply an input frequency provided as a sweep frequency, and an output IDT electrode disposed at the other side of the piezo-electric substrate to output an output frequency.

To generate a driving signal which is scarcely distorted, without needing large power-supply voltages.SOLUTION: A recording device, which performs recording on a recording medium while discharging liquid using a piezoelectric element, comprises amplifying means that amplifies at least either of voltages or currents which have an input waveform to supply the either to the piezoelectric element. The amplifying means has switch means for supplying power-supply voltages for output of the amplifying means and charged means that is charged with the power-supply voltages. The switch means is turned on by at least either of voltages and currents supplied from the charged means.SELECTED DRAWING: Figure 1

The invention concerns a wafer positioning stage with 4 degrees of freedom for use in a cryogenic environment and suited for cryogenic chip probing. 10 Special focus has been attended to realize high speed and considerable lifetime improvements with respect to current piezo based positioners. In the presented concept we introduce cryogenic compatible electromagnetic linear motors in close 15 distance to the contacting probes which enables high speed, no wear and precise displacements. All required 4 degrees of freedom, positioning in X, Y, rotation around Z and probing action Z displacement have been integrated in a stand-alone module. 20 Special attention has been put to keep the substrate table at the desired temperature under moving circumstances and minimizing the dissipation during cryogenic chip probing.

The invention provides a low-interface toughness coating coupling piezoelectric deicing device and a test method. The device comprises a signal generator (1), a power supply (2), a power amplifier (3), a piezoelectric plate (4), a substrate plate (5), a low interface toughness coating (6), a fixed bottom plate (7), a clamping device (8), a fixing device (9) and a vibration meter (10). The invention further relates to a testing method of the device. The device can fully show the state of the ice layer on the surface of the sample, the interface change and the fragmentation or falling process when the coating and the piezoelectric vibration act at the same time; according to the invention, the comprehensive deicing performance of the coupling piezoelectricity of the low-interface toughness coating can be accurately evaluated; the deicing device for coupling the low-interface-toughness coating with the piezoelectricity is easy to build, simple to operate and high in applicability, can quantitatively evaluate the anti-icing / deicing performance of the sample at multiple angles, and provides technical support for development of the field of low-energy-consumption, large-area and efficient deicing.

In an example, the present invention provides a laser system. The laser system has a source laser (e.g., CBC) coupled to first mirror device opposing a second mirror device and configured to generate a resonating laser beam between the first mirror and the second mirror. In an example, the system has a piezoelectric device configured to the second mirror device and characterized by a refractive e index such that one or more voids is changed by applying an energy to the piezo electric device to cause a change in a value of the refractive index, e.g., by more than 0.0001, to allow the resonating laser beam or a portion of the resonating laser to traverse through a portion of the second mirror device.

In an example, the present invention provides a laser system. The laser system has a source laser (e.g., CBC) coupled to first mirror device opposing a second mirror device and configured to generate a resonating laser beam between the first mirror and the second mirror. In an example, the system has a piezoelectric device configured to the second mirror device and characterized by a refractive e index such that one or more voids is changed by applying an energy to the piezo electric device to cause a change in a value of the refractive index, e.g., by more than 0.0001, to allow the resonating laser beam or a portion of the resonating laser to traverse through a portion of the second mirror device.

A piezo electric and thermal harvesting method for rail-transportation systems. The method embodies a three-dimensional arrangement of piezo vertebrae configured in parallel within a track housing that is operatively associated with the rail of the rail-transportation system. Weight from rail traffic compresses the track housing and thus the piezo vertebrae, thereby generating electricity. Thermal control incorporates a chill beam within the track housing as well as a multi-wire thermal electric couple wiring scheme.

A radio frequency identification (RFID) tag comprising a tag integrated circuit (IC), an antenna coupled to the tag IC, and an impedance tuned circuit coupled to the antenna, wherein the impedance tuned circuit configured to tune a circuit impedance of the antenna based on power received by the impedance tuned circuit. The RFID tag further comprises a piezo electric energy harvesting module coupled to the impedance tuned circuit, wherein the piezo electric energy harvesting module is configured to supply the power to the impedance tuned circuit.

The valve system, to be used as a suction valve and / or as a discharge valve in a reciprocating compressor, comprises a valve body, at least one sensor mounted on the valve body and configured to detect a parameter associated to operation of the valve device, and a wireless communication unit electrically coupled to the at least one sensor and configured to transmit information detected by the at least one sensor; the at least one sensor is associated with a fixing member that is inserted in holes of the valve body and that seals the holes. The innovative valve system may comprise further at least one energy harvesting system, which could be for example thermoelectric or piezoelectric, located preferably in or on or at the valve body.

The device includes a test circuit for receiving signals from a piezoelectric horn and a circuit for determining whether the device should be operated in a silent test mode or in a normal mode. Based on the determination that it should be operated in normal mode, the device includes a circuit that enables a driver circuit to drive the piezoelectric horn so that it emits sound when activated by the driver circuit.The circuit, based on a finding that it is operating in silent test mode, is intended to cause the piezoelectric horn to generate a piezoelectric response, with the piezoelectric horn being silent while generating the piezoelectric response during the silent test mode, and to perform an evaluation as to whether the piezoelectric horn is operating correctly or not, based on the signals received from the piezoelectric horn.

An actuator unit for a printhead, comprising: a first piezoelectric element and a second piezoelectric element provided on opposing surfaces of a spacing element, wherein the surface not facing the spacing element of each of the first piezoelectric element and the second piezoelectric element is connected to a first and second electric potential, respectively, preferably a high voltage signal, and wherein the surface facing the spacing element of the first piezoelectric element and second piezoelectric element is connected to a third electric potential, preferably a switchable ground potential, wherein the first piezoelectric element and the second piezoelectric element are configured such that one contracts and the other expands in a direction essentially parallel to the surfaces facing the spacing element, when the first and second electric potential has the same polarity with respect to the third potential.

This invention introduces a novel energy conversion system and method that synergistically combines the electrohydraulic and piezoelectric effects to enhance electricity generation efficiency. By leveraging the overunity energy potential of cavitation, the system achieves exceptionally high energy efficiency for producing electrical energy. It features a hermetically sealed container filled with a pressurized dielectric liquid, electrodes connected to a high-voltage power source to induce cavitation, and a geometric shape incorporating piezoelectric material to directly convert energy from pressure shock waves into electricity. This approach uniquely exploits cavitation dynamics to generate sustainable and efficient electrical power, offering a scalable solution adaptable to various applications. The invention has the potential to revolutionize renewable energy systems by providing a cleaner and highly efficient source of electricity.

An actuator unit for a printhead, comprising: a first piezoelectric element and a second piezoelectric element provided on opposing surfaces of a spacing element, wherein the surface not facing the spacing element of each of the first piezoelectric element and the second piezoelectric element is connected to a first and second electric potential, respectively, preferably a high voltage signal, and wherein the surface facing the spacing element of the first piezoelectric element and second piezoelectric element is connected to a third electric potential, preferably a switchable ground potential, wherein the first piezoelectric element and the second piezoelectric element are configured such that one contracts and the other expands in a direction essentially parallel to the surfaces facing the spacing element, when the first and second electric potential has the same polarity with respect to the third potential.

The invention provides a tunnel lining active and passive monitoring method and system based on piezoelectricity, and relates to the technical field of tunnel lining monitoring, the method comprises the steps that a plurality of monitoring faces are arranged in a tunnel lining, each monitoring face is provided with a plurality of piezoelectric sensors, and the monitoring faces are used for dividing effective sections of the tunnel lining; performing passive monitoring based on the piezoelectric sensor, and combining temperature correction and time-frequency diagram conversion to obtain an abnormal section; the abnormal section is actively monitored, piezoelectric driving and model construction are combined, the damage result of the tunnel lining is obtained, and the damage result comprises the damage position, the damage type and the damage degree. According to the invention, the problem that the existing periodic test is insensitive to the acquisition of the damage occurring at the period interval is solved.