| 摘要 |
<p>A mass air flow sensor (10) has a vortex generator (12) positioned in the air flow for generating two streams of vortices. Spaced vortex detectors (20 and 22) are each positioned the same distance downstream of vortex generator (12) in one of the two streams of vortices. Vortex detectors (20 and 22) are coupled to a differential amplifier (24) which reduces noise signals applied equally to vortex detectors (20 and 22) and enhances vortex signals alternately applied to vortex detectors (20 and 22). </p> |
