Abstract: A method for monitoring an energy feed-in point of an energy supply network is particularly suited for low voltage systems. A number of first and second nodes a producer, consumer, or prosumer—are connected to the feed-in point. An actual current representing the current consumption or current output is detected at the feed-in point by a measuring and monitoring device. An item of current information received from a first node, representing an intended and/or maximum possible current consumption or output of the first node, is processed by checking whether a current value thereof fulfills a predetermined criterion relative to a possible current value of the feed-in point. The possible current value is a differential between the predetermined maximum current and the actual current. Depending on whether the criterion is fulfilled, a message is transmitted confirming or denying the current consumption or output to the first node.

Abstract: A method for determining the energy consumption of a production system includes a) determining a load profile of the production system via of a load calculating device, b) estimating an energy requirement of the production system based on the determined load profile and an electromechanical model of the production system via an energy calculating device, c) determining an energy model of the production system based on the estimated energy requirement, and d) determining the energy consumption of the production system via the load calculating device depending on the energy model and a load transported via the production system.

Abstract: A coil system for the contactless magnetic navigation of a magnetic body in a work space, has a plurality of coils and a current controller for controlling the respective currents in the plurality of coils. In order to navigate the magnetic body to a variably predeterminable position in the work space, the current controller is designed such that the currents in the plurality of coils are such that the magnetic forces generated by the currents and acting upon the magnetic body at multiple positions at the edge of a convex environment around the predetermined position are directed into the environment. The coil system has the advantage that a movement of the magnetic body toward a spatial position is achieved without any mechanical movement of the coil system and without a positioning system for determining the position of the magnetic body. The coil system is utilized particularly in a medical device, wherein a magnetic body in the form of a probe is moved in the body of a patient.

Abstract: A two-channel magnetic resonance tomography system is provided with a regulation circuit for an amplification system in order to be able to take into account different load situations of the MRI system in a flexible and efficient manner. It is thus possible to improve the MRI measurements greatly if the MRI system is set to the respective load situation beforehand by an idle state measurement. The adaptation may optionally also be carried out during the MRI measurement. Therefore, a multiplicity of completely different load situations may be taken into account in an optimized manner by the regulation circuit.

Abstract: A circuit arrangement has a bidirectional AC/DC converter connected to a first side of a DC/DC converter at a DC side of the AC/DC converter via first electric switch. The AC/DC converter is connected to a second side of the DC/DC converter at the DC side of the AC/DC converter via a second electric switch. The first side of the DC/DC converter is connected to a third electric switch and can be connected to an energy storing device via said switch. The second side of the DC/DC converter is connected to a fourth electric switch and can be connected to an energy generating device via said switch. The AC/DC converter can be connected to the electric supply grid at the AC side of the AC/DC converter. A control device controls the switches and the converters.

Abstract: In order to achieve an improved or optimized operation mode of an “expanded drying section” of a paper machine—having the “actual” drying section, separated, if applicable, into pre-drying and post-drying sections with a size press located therebetween, a steam and condensate system, an exhaust air heat recovery system, a wet press and the white water—a model that includes the above system components is proposed, with which mass and energy balances for the system components as well as the specific energy consumption of the drying section are calculated, based on values for parameters relevant for the drying process.

Abstract: A system includes a capsule body having a casing introduced into a subject to perform, in liquid, examination of or treatment on the interior of the subject, the casing containing a permanent magnet, a mass of the casing excluding the magnet being set to be less than a product of a volume of the casing and a density of the liquid; a magnetic field generator that generates a magnetic attraction for the magnet to guide the capsule body; and a magnetic field generation device that controls the magnetic field generator to generate the magnetic attraction by setting a maximum value of the generated magnetic attraction vertically upward to the capsule body, to be equal to a maximum value of the generated magnetic attraction vertically downward to the capsule body, and by setting the maximum values to be less than a value obtained by multiplying a mass of the magnet by a gravitational acceleration.

Abstract: A coil system for the contact-free magnetic navigation of a magnetic body with a magnetic dipole moment in a working chamber, a number of coils and a current control unit for controlling the respective currents in the multiple coils. The current control unit generates a force on the magnetic body in a predefined direction by setting the currents in the multiple coils so that the direction of the force generated by the currents on the magnetic body at each position among a number of positions in a volume in the working chamber essentially corresponds to the predefined direction of force. This coil system has the advantage that the position of the magnetic body in the working chamber does not need to be known exactly in order to move the body in a desired direction or to align the body in a desired orientation direction. This coil system suitable for use in a medical device and by special preference in a device for capsule endoscopy.

Abstract: An endoscopy capsule contains an induction coil that is elongated along a longitudinal axis thereof, the endoscopy coil supplying power to components within the endoscopy capsule. A magnetic element in the endoscopy capsule has a magnetic dipole moment and interacts with an external magnetic field to navigate the endoscopy capsule within the body of a subject. The magnetic element is oriented so that the magnetic dipole element is aligned perpendicularly to the longitudinal axis of the induction coil. The endoscopy capsule has a cross-sectional area, in a plane having a normal aligned in the direction of the longitudinal axis of the induction coil, which contains both a cross-section through the magnetic element and a cross-section through the induction coil. The magnetic element has a length along the longitudinal axis of the induction coil so that the magnetic element projects beyond the induction coil at each end thereof.

Abstract: A charging post at a charging station for charging an electric vehicle can be lowered into the ground by a lifting device such that it does not become a physical obstacle or optically impair the environment and is not damaged by external influences.

Abstract: A control/regulation unit and a sensor device in an air-conditioning device enable detecting presence of an analyte in room air to infer the quality of the room air. A light source emits light into the room on a light path that is reflected to a light-sensitive detector. The air-conditioning device is controlled/regulated as a function of an output of the detector. If the analyte is situated on the light path, the light is scattered and/or absorbed such that the detector detects a smaller quantity of light, on the basis of which it is possible to infer the presence of the analyte. The light source can be pivoted to set various light paths through the room to determine where the analyte is situated in the room based on the output of the detector for each light path. The air-conditioning device can controlled to selectively influence the atmospheric environment locally.

Abstract: In a charge cable which can be connected to an electric charging device to charge a battery of an electric vehicle, a method for detecting a short-circuit selects a first voltage value for a test voltage. By applying this test voltage to the charge cable, testing is carried out to determine whether there is a short-circuit , a fault signal is output; if there is a no short-circuit, the test voltage is increased incrementally up to a maximum voltage value. The increased test voltage is used to test whether there is a short-circuit in the charge cable or in the contact connected to the charge cable.

Abstract: A DC voltage source, for example an AC/DC converter, has an output producing a controllable DC voltage for a DC charging station to charge the battery of an electric vehicle. A voltage balancing unit is connected between the output of the converter and the output terminal of the DC charging station. The voltage balancing unit has a controllable switch by which the connection between voltage source or converter and battery can be made or broken as desired. The switch is controlled as a function of the voltage on the input and output side of the voltage balancing unit to the effect that the switch breaks the connection before and while the battery is being connected to the DC output terminal, and makes a connection only when the voltage on the input side of the voltage balancing unit corresponds substantially to the voltage on the output side of the voltage balancing unit.

Abstract: A coil arrangement for contact-free guidance of a magnetic element such as an endoscopy capsule, has a number of individual coils arranged in pairs by which the components of a guidance field are generated. By arranging the individual coils to include coils corresponding to blades at an exterior of a cylindrical surface, the number of degrees of freedom required for guidance can be obtained with fewer individual coils and fewer power amplifiers to operate the coils.

Abstract: A coil assembly for guiding a magnetic object, such as an endoscopy capsule, in a workspace, wherein the magnetic object exhibits a magnetic dipole, includes different versions of coil assemblies having a number of individual coils and corresponding activation units for feeding current to the respective coils. The coil arrangement can have exactly eleven individual coils and eight power amplifiers, nine individual coils and seven power amplifiers, eight individual coils with six or seven power amplifiers, six individual coils with five power amplifiers, and five individual coils with five power amplifiers.

Abstract: The accurate position detection without being affected by an unnecessary second magnetic field can be realized by calculating the unnecessary second magnetic field induced and generated at positions of magnetic field sensors by a guiding coil arranged the position detection area of the medical device due to an action of a first magnetic field generated by a magnetic field generator, at the time of position detection, and the second magnetic field is subtracted from the first magnetic field detected by the magnetic field sensors to calculate corrected magnetic-field information. Further, LUTs that store beforehand numerical information having a correlation with the second magnetic field induced and generated at the positions of magnetic field sensors are used to calculate the second magnetic field, thereby enabling to reduce an amount of calculation performed each time and realize high speed processing.

Abstract: A system measures a change in position of a medical appliance, such as an endoscopy capsule. A device uses this measurement in order to influence the position of the medical appliance. The medical appliance sends a signal that is received by a multiplicity of spatially separate receiving devices. The time profile of the phase differences between the received signals and a reference signal provides an indication of whether the medical appliance has moved. In the event of a movement being detected, a maneuvering device can be regulated by a regulating means in such a way that the maneuvering device generates forces and/or torques and applies them to the medical appliance to counteract the detected movement.

Abstract: A solenoid system for magnetically guided capsule endoscopy, has the following components arranged under a patient table which defines a flat plane: a central coil with normal direction being perpendicular to the flat plane, and four coil pairs arranged in the form of a cross around the central coil with respect to the flat plane. Each pair includes two single coils, the normal directions of which are parallel to the flat plane and offset by 90 degrees in relation to each other.

Abstract: A device is for repeated semi-invasive abrasion of lesions on the walls of hollow organs, in particular blood vessels or the gastrointestinal tract of a patient. The device includes an outer stent which, fixed in position at the site of the lesions, can be clamped against the wall of the hollow organ and has recesses through which the lesions can inwardly protrude. The device further includes a cutting body which is guided within the outer stent and only negligibly narrows the internal bore of the outer stent, which cutting body has cutting edges sliding on the inner side of the outer stent and is coupled magnetically to an external magnet system via which it can turn about the stent axis and/or can move longitudinally along the stent axis.

Abstract: A method for closed-loop control of a linear drive including a stator, a rotor configured for reciprocating movement along a drive axis therein, and a drive coil through which coil current flows, in particular for a linear compressor including a piston housing and a compressor piston configured for reciprocating movement along a piston axis therein, and driven by the linear drive wherein the coil current is subject to closed-loop control, the method including the steps of determining a target coil current and applying an actual coil current wherein the actual coil current and the target coil current are substantially the same value.