摘 要:地球之大,万物变千,海拔高度的高低以及地貌、地质、水系都与大气压力的高低有着密切的关系。其中在航天方面就是利用气压计的原理去测量飞行器的飞行高度。然而气压计都是从物理学的角度去测量大气压力的,因此它受到的外界环境,人为误差等因素影响较大。在测量大气压力的过程当中,由于气压的敏感性,即使人们说话也会影响到气压的改变,因此在测量时就需要取大量的数据取其平均值。这时就需要运用互补滤波器在测量高度时使气压计与加速度计进行数据融合。加速度计由检测质量、支承、电位器、弹簧、阻尼器和客体组成,是测量运载线加速度的仪表,会在很小的振幅内得出数据。这时我们取其积分正好与气压计数据互补中和,从而得到最终精确的数据。37547 毕业论文关键词:气压计;互补滤波器;气压传感器
Barometer Height Measurement Instrument Based
Abstract: The highlands in the pressure with the elevation of all related to geology,geomorphology,water system, etc.In aviation and by using the principle of air pressure machine to determine the altitude. The barometer measures the pressure, under the influence of the external environment. So it affected by external environment,most influenced by factors such as measurement personnel.In the process of measurement, due to the sensitivity of the pressure, even if people speak can also affect the air pressure changes, so we must take a large amount of data to take the average value in the measurement. Then you need to use the complementary filter in measuring height when make the barometer and accelerometer data fusion. Accelerometer by detection quality, bearing, potentiometer, springs, dampers and object composition, measurement of carrier linear acceleration instrument, would come in the small amplitude data. When we take the pointscoincide with complementary and barometer data, we would get the accurate data finally.
Key Words: Pressure gauge; Complementary filter; Pressure Sensors
目 录