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    • 6. 发明申请
    • METHOD FOR MEASURING AIR MASS AND AIR MASS SENSOR
    • 空气流量计测量和空气流量计传感器的方法
    • WO2008028898A3
    • 2008-06-05
    • PCT/EP2007059211
    • 2007-09-04
    • SIEMENS VDO AUTOMOTIVE AGBIERL RUDOLFLESSER MARTINMEYER ANDREASSTEUBER FRANK
    • BIERL RUDOLFLESSER MARTINMEYER ANDREASSTEUBER FRANK
    • G01F1/66
    • G01F1/662
    • The present invention relates to a method for measuring air mass and to an air mass sensor. In order to provide an inexpensive and reliable method as well as a corresponding apparatus for measuring flow, it is proposed to construct an air mass sensor having two ultrasonic transducers 3, 4, which are arranged in a tube 2, in such a manner that the ultrasonic transducers 3, 4 are arranged at a short distance l, L from one another and essentially parallel to one another at an angle a which is oblique with respect to the centre axis of the tube M in the region of the tube wall 5, and a system 6 having at least one mirror or reflector 7, 8 is arranged in such a manner that the ultrasonic wave 9 emitted by the respective transmission transducer 3, 4 is reflected to the second transducer 3, 4 which is used as the reception transducer, wherein a tube 11 is arranged in the region of one of the two sound transducers 3, 4 in such a manner that part of the transmission path of the ultrasonic wave 9 is guided in this tube 11.
    • 本发明涉及一种用于空气质量测量的方法和一种空气质量传感器。 为了提供一种廉价,可靠地操作的方法和用于流量测量的相应的装置中,提出建立一个空气质量传感器具有两个超声换能器3,4,其被布置在管2上,使得超声换能器3,4以微小的距离l ,L和被布置成基本上平行于彼此以角度α倾斜于管中心轴线M在管壁5的区域,并且包括至少一个反射镜或反射器7的系统6,8被布置成使得所述光从各个发送换能器3,4发出 超声波被反射9到用作第二换能器3,4,其中,管11设置在两个换能器3,4的区域中,所述超声波的传输路径的一部分在该管中进行接收换能器11 9