3 results about "Piezo electric" patented technology

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.

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.

The present invention relates to a controller for an acoustic transducer, a parking assistance control system, and a method of operating a piezoelectric-based sensor. The present disclosure provides an exemplary controller comprising: a transmitter that drives an acoustic transducer to produce a sound pulse train; a receiver that senses a response of the acoustic transducer to an echo; and processing circuitry coupled to the transmitter and the receiver, the processing circuitry configured to convert the received response into output data by: correlating the response with a drive signal to obtain a correlated response; distinguishing a non-peak region from a peak region in the correlated response; deriving a noise level in a portion of the correlated response based on the non-peak region within the portion; calculating a signal-to-noise ratio (SNR) of a peak signal within the portion as a ratio of a peak value of the peak signal to the noise level in the portion of the correlated response; and accepting the peak signal as an echo only when the SNR of the peak signal exceeds a predetermined threshold.