Andreas Schroeder

Bio: Andreas Schroeder is an academic researcher from Meritor. The author has contributed to research in topics: Flow measurement & Electrical conductor. The author has an hindex of 5, co-authored 14 publications receiving 105 citations. Previous affiliations of Andreas Schroeder include AVL.

Ultrasonic gas flowmeter as well as device to measure exhaust flows of internal combustion engines and method to determine flow of gases

Abstract: An ultrasonic gas flowmeter includes a measuring pipe with flowing gas, transmitting and receiving sound transducers, transmission and reception electronics, and evaluation electronics. The sound transducers (7, 8, 9, 10) are designed as capacitive electro-acoustic ultrasonic transducers to construct a flowmeter with improved capacity, especially in view of temperature stability and the reduction and consideration of a temperature profile. Devices (5, 6) are provided to level the gas temperature profile and to minimize the influence of the temperature profile on the flow measurement. A more accurate and dependable detection of the volume flow or the mass flow of gases is to be achieved, especially in highly dynamic flows, for the method of determining the flow of gases whereby the mean flow velocity is determined and the flowing gas quantity is determined with highly synchronized resolution from the two transit times of two acoustic signals. In addition, an assessed value is computed (35) for the flow after the determination of the transit times and the assessed value is corrected at least by means of a characteristic temperature of the gas and the temperature of the wall of the measuring pipe (36).

Door module with electrical wires and connectors

Abstract: A method of producing components, such as a door modules with electrical wires and connectors, is provided. The door module includes a substrate material with conductor tracks arranged therein. Electrical wires, which preferably have connectors at the ends, are placed into the conductor tracks. The substrate is then placed in a mold and filled with foamed plastic to encase the wires and form the door module. The connectors protrude from the door module to permit electrical components to be attached to the connectors.

Method for producing components with electrical conductor tracks arranged in them and components produced by this method, in particular as door modules for motor vehicles

Abstract: Method of producing components with electrical conductor tracks arranged in them, in which method a substrate material provided with these conductor tracks and the plug-in connectors connected with them and lying with their outer terminal area in the surface of the component is placed into a component mould and the mould is then filled with foamed plastic. The components are used in particular as door modules in vehicle construction.

Ultrasonic gas flow sensor and device for measuring exhaust gas flows of internal combustion engines and method for determining the flow rate of gases

Abstract: Ein Ultraschall-Gasdurchflusssensor besteht aus einem vom Gas durchstromten Messrohr mit Sende- und Empfangs-Schallwandler und einer Sende-, Empfangs- und Auswerte-Elektronik. An ultrasonic gas flow sensor consists of a flown by gas measuring tube with transmitting and receiving transducers and a transmitter, receiver and evaluation electronics. Um einen Sensor mit verbesserter Leistungsfahigkeit, insbesonders Temperaturfestigkeit und der Reduzierung und Berucksichtigung eines Temperaturprofils, zu bauen, sind die Schallwandler (7, 8, 9, 10) als kapazitive elektroakustische Ultraschallwandler ausgefuhrt und sind Einrichtungen (5, 6) zur Vergleichmasigung des Gastemperaturprofils und zur Minimierung des Einflusses des Temperaturprofils auf die Stromungsmessung vorgesehen. In order to build a sensor with improved performance, especially temperature strength and the reduction and consideration of a temperature profile, the transducers (7, 8, 9, 10) designed as a capacitive electro-acoustic ultrasonic transducer and means (5, 6) for equalizing the gas temperature profile, and provided to minimize the effect of the temperature profile on the flow measurement. Fur das Verfahren zur Ermittlung des Durchflusses von Gasen, wobei die mittlere Stromungsgeschwindigkeit und daraus die stromende Gasmenge aus der Laufzeit von zwei Schallsignalen mit hoher zeitlicher Auflosung ermittelt wird, soll eine genauere und zuverlassigere Ermittlung des Volumsstromes bzw. Massenstroms von Gasen, insbesondere in hochdynamischen Stromungen, erreicht werden. For the method of determining the flow of gases, the average flow rate and hence the quantity of gas flowing from the transit time of two sound signals with high temporal resolution is determined, to a more accurate and reliable determination of the Volumsstromes or mass flow of gases, especially in highly dynamic currents are achieved. Dazu wird nach Bestimmung der Laufzeiten ein Schatzwert fur den Durchfluss berechnet (35) und wird dieser zumindest mittels einer charakteristische Temperatur des Gases und der Temperatur der Wand des Messrohres korrigiert (36). For this purpose, according to determination of the transit times is an estimated value for the flow rate is calculated (35) and this is corrected by means of at least one characteristic temperature of the gas and the temperature of the wall of the measuring tube (36).

Verfahren zur Herstellung von Bauteilen mit darin angeordneten elektrischen Leiterbahnen sowie danach hergestellte Bauteile, insbesondere als Türmodule für Kraftfahrzeuge

Abstract: Verfahren zur Herstellung von Bauteilen mit darin angeordneten elektrischen Leiterbahnen, bei dem ein mit diesen Leiterbahnen und den damit verbundenen, mit ihrer auseren Anschlusflache in der Oberflache des Bauteils liegenden Steckverbindern versehenes Tragermaterial in eine Bauteilform eingelegt und die Form dann mit Kunststoff ausgeschaumt wird. Die Bauteile finden ihren Einsatz insbesondere als Turmodule im Fahrzeugbau.

User interface improvements for medical devices

Abstract: A method and system is disclosed for operating a medical device with or without a cassette in place. A method is disclosed for adding additional VTBI to an ongoing infusion without stopping the infusion and with maintaining the infusion parameters. A method and system is disclosed for changing the CCA without having to interrupt or completely stop an ongoing infusion. Quick titration buttons are provided to allow improved navigation between various delivery display screens.

Systems and methods for a graphical interface including a graphical representation of medical data

Abstract: This disclosure describes systems and methods for a graphical interface including a graphical representation of medical data The graphical interface platform may receive medical data and provide medical safety reporting capabilities including reporting of history data and real-time visual monitoring data The graphical interface platform may be configured to identify potential problems and corrections to medical devices in operation while a reporting cycle is underway through visual representation of performance metrics

Method of determining a fluid inflow profile of wellbore

Abstract: A method of determining a fluid inflow profile along the length of a permeable inflow region of an underground wellbore comprising: transferring heat into or from the permeable inflow region of the wellbore during a well shut period; starting production of hydrocarbon fluids via the permeable inflow region; measuring substantially simultaneously the temperature of the fluids at various points of the inflow region; determining at selected intervals of time after production start up a temperature profile of the inflow region on the basis of the thus measured temperatures; and determining a fluid inflow profile of the inflow region on the basis of a comparison of the determined temperature profiles at selected intervals after production start up. The heater cable may have a layer of compacted mineral powder and temperatures may be measured with an optical fiber.

System for monitoring and delivering medication to a patient and method of using the same to minimize the risks associated with automated therapy

Abstract: A system and method for monitoring and delivering medication to a patient. The system includes a controller that has a control algorithm and a closed loop control that monitors the control algorithm. A sensor is in communication with the controller and monitors a medical condition. A rule based application in the controller receives data from the sensor and the closed loop control and compares the data to predetermined medical information to determine the risk of automation of therapy to the patient. A system monitor is also in communication with the controller to monitor system, remote system, and network activity and conditions. The controller then provides a predetermined risk threshold where below the predetermined risk threshold automated closed loop medication therapy is provided. If the predetermined risk threshold is met or exceeded, automated therapy adjustments may not occur and user/clinician intervention is requested.

Methods for determining transducer delay time and transducer separation in ultrasonic flow meters.

Abstract: Methods and related systems for determining transducer delay time and transducer separation in ultrasonic flow meters At least some of the illustrative embodiments are a method comprising measuring a delay time for a first transducer pair, measuring a total measured time for ultrasonic signals transmitted between a second transducer pair in an ultrasonic meter in which both the first and second transducer pairs are installed, calculating a parameter associated with the second transducer pair using the delay time of the first transducer pair and the total measured time for said second transducer pair