Sensitivity Optimization of Airflow Level Posture Sensor

In this paper, in order to improve the sensitivity of the sensor, using FLUENT software to simulate the temperature field of the closed cavity to find out the optimal thermal wire position. The distribution of temperature field in the closed body are calculated when the sensor is in different inclined angle, power and included angle. Analyzed the relationship of the sensor´s sensitivity between the heating power and angle. The calculation results show that the heating power increases, the sensitivity of the sensor also increases, the optimal location of sensor also changes, it provides a theoretical basis for the optimization airflow level posture sensor sensitivity.