Abb Technology Ag

Tdk Corporation

Abb Schweiz Ag

Alessandro Colombo

Carlo Gemme

Christian Reuber

Pentti Mahonen

Leonardo Baldasarre

Federica Confalonieri

Marco Travagliati

Marty Lynn Trivette

Carlo Cereda

Paolo Gritti

Alfonso Terrazzino

Marty Trivette

An ultrasonic transducer device including a substrate, an edge support structure connected to the substrate, and a membrane connected to the edge support structure such that a cavity is defined between the membrane and the substrate, the membrane configured to allow movement at ultrasonic frequencies. The membrane includes a structural layer, a piezoelectric layer having a first surface and a second surface, a first electrode placed on the first surface of the piezoelectric layer, wherein the first electrode is located at the center of the membrane, a second electrode placed on the first surface of the piezoelectric layer, wherein the second electrode is a patterned electrode comprising more than one electrode components that are electrically coupled, and a third electrode coupled to the second surface of the piezoelectric layer and electrically coupled to ground.

Differential receive at an ultrasonic transducer

An ultrasonic transducer array including a substrate, a membrane overlying the substrate, the membrane configured to allow movement at ultrasonic frequencies, and a plurality of anchors connected to the substrate and connected to the membrane. The membrane includes a piezoelectric layer, a plurality of first electrodes, and a plurality of second electrodes, wherein each ultrasonic transducer of a plurality of ultrasonic transducers includes at least a first electrode and at least a second electrode. The plurality of anchors includes a first anchor including a first electrical connection for electrically coupling at least one first electrode to control circuitry and a second anchor including a second electrical connection for electrically coupling at least one second electrode. The ultrasonic transducer array could be either a two-dimensional array or a one-dimensional array of ultrasonic transducers.

Anchor configurations for an array of ultrasonic transducers

An electric power distribution switchboard () in which one or more functional units are equipped with a switching device compartment () that integrates primary and secondary functions. Within the switching device compartment () are included, together with the switching device (), the current and voltage sensors (), the position sensors for interlocking, a human machine interface (HMI) and an Intelligent Electronic Device (IED) () and the related local configuration point () to configure the IED (). The IED () realizes functional unit supervision, control, protection, communication and monitoring and acts as a concentrating point of functional unit information and decisions. The switchboard () of the invention further comprises power supply section, an I/O section and a communication system.

Medium voltage integrated switchgear

A circuit breaker (), in particular a medium voltage circuit breaker, having a current () and/or a voltage measuring device () integrated thereon. The integration can be functional and/or physical. The functionally integrated current and/or voltage measuring device provides primary current and voltage representative signals to an on-board electronic device () in order to realize the measure, process, and protection functions as a whole.

Circuit breakers with integrated current and/or voltage sensors

A method for calibrating voltage sensors in a switchboard, using a communication bus which comprises the following steps: i. performing a measurement using a first voltage sensor; ii. transmitting an information derived from said measurement to an electronic device, through the communication bus; iii. using said information to calibrate a second voltage sensor.

Method for on-line calibration of low accuracy voltage sensor through communication bus

Growing community of inventors

Milan, Italy

Alessandro Colombo