Abstract: An apparatus for non-contact current and voltage composite measurement includes: a current signal detection device, a voltage signal detection device, a zero-crossing detection circuit, and a control unit. The current signal detection device generates a current-induced electromotive force based on current flowing on the transmission line to be measured when there is current-voltage passing through the transmission line to be measured; the voltage signal detection device generates a voltage-induced electromotive force based on voltage flowing on the transmission line to be measured when there is current-voltage passing through the transmission line to be measured. The zero-crossing detection circuit performs zero-crossing detection on the current-induced electromotive force and the voltage-induced electromotive force to determine the phase difference between them.

Abstract: A CT energy extraction device is provided. A first accommodation cavity is provided in a first housing, and a second accommodation cavity is provided in a second housing. The first housing can be connected and joined with the second housing to form a ring shape, which is used to be placed on outside of a high-voltage line. A first iron core is disposed in the first accommodation cavity, and an energy-extraction coil is wound around the first iron core. A cable outlet is provided on the first housing, and the energy-extraction coil has pins extending from the cable outlet. A second iron core is disposed in the second accommodation cavity. When the first housing and the second housing are connected and joined, the first and second iron cores are joined to form a closed ring structure. An inflating assembly is provided on the first housing and/or the second housing.

Abstract: This application proposes a magnetic coupling coil optimization method. The method comprises: calculating an equivalent magnetic permeability of a magnetic coupling coil based on an air gap length of the magnetic coupling coil; calculating an effective cross-sectional area of the magnetic coupling coil based on the equivalent magnetic permeability and the power of the magnetic coupling coil; calculating a number of turns of the secondary winding of the magnetic coupling coil based on the effective cross-sectional area and the equivalent magnetic permeability; optimizing the magnetic coupling coil based on the number of turns of the secondary winding. The present application can reasonably configure the parameters of the magnetic coupling coil, effectively acquire energy from the power grid to provide stable power for detection or communication equipment in the power grid, and make the magnetic coupling coil more reliable while meeting the power demand.

Abstract: The present application provides an oscillation wave generating circuit and a construction method. The circuit includes: a high-voltage DC power supply, an energy storage capacitor, a thyristor, an isolation pulse transformer, a pulse control network, an LC resonant circuit, and a low-voltage DC power supply.

Abstract: In accordance with one aspect of the disclosure, an image analysis system is provided. The image analysis system includes at least one processor configured to access image tiles associated with a patient, each tile comprising a portion of a whole slide image, individually provide a first group of image tiles to a first trained model, receive a first set of feature objects from the first trained model, cluster feature objects from the first set of feature objects to form a number of clusters, calculate a number of attention scores based on the first set of feature objects, select a second group of tiles, individually provide the second group of image tiles to a second trained model, receive a second set of feature objects from the second trained model, generate a cancer grade indicator, and cause the cancer grade indicator to be output.