专利名称：Device for finding the flow rate of a flowing
medium
发明人：Josef Kleinhans申请号：US09/066380申请日：19980429公开号：US06047597A公开日：20000411
摘要：A device for determining the throughput of a flowing medium is described,wherein a heater resistor heats at least one upstream and downstream located,temperature-dependent resistor, wherein the resistors, which are cooled at differentrates by the flowing medium, are wired to form a bridge, whose diagonal voltage is afunction of the temperature difference of the resistors. In the end the mass of theflowing medium is determined from this processed voltage (UM). The control of thetemperature of the resistor is performed with the aid of its own heater control circuitwhich regulates the current through the heater resistor in such a way that the
temperature of the heater resistor is a predeterminable function of the temperature ofthe flowing medium. A temperature compensation, with the aid of which the measuringvoltage (UM) is compensated at high temperatures, is performed with the aid of a hightemperature compensation stage (DT) and of a converter circuit (UMS).
申请人：ROBERT BOSCH GMBH
代理人：Michael J. Striker
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