超声波检测涡流式空气流量传感器的改进设计

摘要

In order to avoid the influence of the atmospheric pressure and temperature in traditional ultrason-ic vortex type air flow sensor on measurement. We make a new design of ultrasonic vortex type air flow sen-sor by making use of the time difference. Furthermore, we prove the project’ s feasibility by making use of the theoretical calculation. With the use of this new kind of ultrasonic vortex type air flow sensor we can make a contribution to the air flow sensor on measurement of the car in exploitation.%为避免传统式超声波检测涡流式空气流量传感器在测量发动机进气量时受大气压力和温度变化等不利因素的影响，本文通过应用时间差原理来设计超声波检测涡流式空气流量传感器，并通过理论推算与传统式的作比较，证明了方案的可行性，为发动机空气流量传感器的设计提供一种新的方法。