|本期目录/Table of Contents|

 Design of a Barometric Altimeter Based on a Micro Pressure Sensor(PDF)

《纳米技术与精密工程》[ISSN:1672-6030/CN:12-1351/O3]

期数:
2012年4期
页码:
337-341
栏目:
精密测量
出版日期:
2012-07-15

文章信息/Info

Title:
一种基于微型压力传感器的气压高度计设计
作者:
 GUO Qi1 2 ZHOU Zhaoying1 XIONG Wei3 LIU Shaopeng1
 (1. Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084, China;
2. Beijing Aeronautical Technology Research Centre, Beijing 100076, China;
3. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China)
Author(s):
 郭奇12 周兆英1 熊威3 刘绍鹏1
 (1. 清华大学精密仪器与机械学系, 北京100084;
2. 北京航空工程技术研究中心, 北京100076;
3. 清华大学核能与新能源技术研究院, 北京100084)
关键词:
 barometric altimeter micro pressure sensor GPS-aid
Keywords:
 气压高度计 微型压力传感器 GPS辅助
分类号:
-
DOI:
-
文献标识码:
A
摘要:
 A barometric altimeter is developed based on a micro absolute pressure sensor and the altitude-pressure equation. The circuit for the altimeter contains a constant current source, a special conditioning circuit, a low-pass filter, and an A/D converting chip. Its performance characteristics are tested. The whole device weighs less than 7 g, the operating voltage is 5 V, and the operating current is less than 10 mA. The altimeter can operate at the altitude of -50 m—600 m, with a resolution of about 0.5 m. Temperature drift and pressure variation cause errors in altitude measurement. Therefore,a GPS-aid method is designed to correct these errors. The flight test has also been completed, which
shows that the altimeter can meet the requirements of MAVs.
Abstract:
 基于微型绝压传感器和高度气压关系式,研制了一种气压高度计.高度计的电路由恒流源、专用处理电路、低通滤波器和模/数转换芯片组成.对高度计的性能参数进行了测试.全系统重量小于7 g,工作电压为5 V,工作电流小于10 mA.高度计可以在-50 m~600 m的高度范围内工作,且分辨力可以达到0.5 m.温度漂移和气压变化会导致高度测量误差,为此设计了一种GPS辅助算法.相应的飞行试验也已完成,结果表明高度计可满足微型飞行器的要求.

参考文献/References

备注/Memo

备注/Memo:
更新日期/Last Update: 2012-11-14