Research of Airflow Level Posture Sensor Wire Thermal Structure

Abstract

In order to compare and research the performance of airflow level posture sensor two wire structure and three-wire structure. By using FLUENT-CFD software, through modeling, meshing, solving and other methods, Respectively, the airflow level posture sensor of two-wire structure and three-wire structure are simulated in the sensitive of the velocity field of different tilt angles and different heat source temperatures. The results showed that the tilt sensitivity to changes of velocity of three-wire structure airflow level posture sensor is 0.3831·10-3m/s/0, and the two-wire structure is 0.2487·10-3 m/s/0, and the measurement range of three-wire structure airflow level posture sensor is 00 to 300, the two-wire structure is 00 to 200. The rate of change of three-wire structure airflow level posture sensor’s sensitive internal velocity difference change with the hot source temperature is 1·10-5m/s/0C, and the two-wire is 3.5·10-5m/s/0C. The performance of three-wire structure airflow level posture sensor in inclination and temperature is better than the two-wire structure’s.