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    • 6. 发明申请
    • DEVICE FOR DETERMINING THE FLOW RATE OF A MOVING FLUID
    • 一种用于确定流动介质的流动
    • WO1997028425A2
    • 1997-08-07
    • PCT/DE1996002216
    • 1996-11-21
    • ROBERT BOSCH GMBHWERNER, PeterSTRÖBELE, Hans-PeterKLEINHANS, JosefHESS, GottfriedJOOS, KlausZIMMERMANN, ChristianSAX, ClausSPACHMANN, JürgenSTAAKE, AlbertKONZELMANN, Uwe
    • ROBERT BOSCH GMBH
    • G01F00/00
    • G01F1/6965F02D41/187G01F1/699
    • In a first embodiment of the device described, a heated sensor element is exposed to the moving fluid and is cooled by it. The temperature of the sensor element is controlled so that it remains constant, for instance with respect to the temperature of the fluid. The heating power required to maintain the temperature of the sensor element constant is a measure of the mass of the moving fluid and is used to determine this mass. In a second embodiment, at least one resistor is located above and below the heating element and the mass of the moving fluid determined from the difference in temperature between them. The device includes means for controlling the heater current with evaluation electronics and microcontroller, the evaluation electronics and microcontroller being part of a control device which calculates additional regulation and control parameters as a function of the variable determined for the moving fluid.
    • 中描述了一种装置,用于确定流动介质,其中可加热的传感器元件被暴露于流动介质中的第一实施例中的吞吐量,并且通过它冷却。 所述传感器元件的温度被控制为常数,例如,以流动介质的温度。 的加热功率,这是需要用于保持恒定的传感器元件的温度是流动介质的质量的量度,并且被用来确定该质量。 第二实施例,电阻器是至少上述和加热电阻器的下方,并确定从温度差的流动介质的质量。 该装置包括控制装置,用于控制具有一个发射机和一个微控制器,其中,所述电子评估单元和所述微控制器是其计算响应于流动介质的所确定的尺寸进一步调节或控制变量的控制单元的部分的加热电流。