基于DSP的数字倾角仪的设计与实现  

Design and Realization of Digital Inclinometer Based on DSP

作　　者：吴军[1] 周文祥[2] 雷金娥[3] 章鹏[4] 

机构地区：[1]重庆大学光电工程学院,重庆400030 [2]西南交通大学牵引动力国家重点实验室,四川成都710032 [3]南昌工程学院计算机科学与技术系,江西南昌330099 [4]重庆大学光电技术及系统教育部重点实验室,重庆400030

出　　处：《计算机测量与控制》2009年第11期2337-2338,2341,共3页Computer Measurement &Control

基　　金：南昌工程学院青年基金科技项目(2006KJ029)

摘　　要：为了能测量连续动态变化的倾角,需要提出一种动态性能良好的倾角仪;为了减小误差,采用数字信号进行测量;基于重力原理,属于摆式倾角仪,摆角由编码器转换为数字信号测量,用DSP处理数字信号;测量机架中采用磁阻尼原理能够使摆锤迅速稳定到平衡位置,具有良好的瞬态性能,实践结果表明,本倾角仪可测量±45°范围内的任意倾角,精度可达±0.07%,读数稳定时间在0.05s以内,本倾角仪量程大、精度高、线性好、抗干扰强、结构简单、读数快,能满足对连续变化角度测量的需要。In order to measure the continuously dynamic obliquity, we need to put forward a inclinometer which has a good dynamic per- formance, and in order to decrease the error, we adopt the digital signal for the measuring. This instrument is based on gravity principle and belongs to pendulum--model inclinometer. The angle of pendulum--waver is measured which has been thansformed into digital signal by the encoder. The digital signal is transacted by the DSP. In the frame of measurement we adopt the magnetoeleetric--damp elements and the pendulum can stabilize at the balance place rapidly. This instrument has a good transient performance. It is proved by practice that the inclinometer can measure any obliquity between --45°to ＋45° and its precision may up to ±0.07%, and the readings can be stable within 0.05 second. The measurement capacity of the inclinometer is very strong and the precision is high and it has a good linear characteristic and its capacity of anti-jamming is very well and its structure is simple and we can get the reading swiftly. This inclinometer can adapt well to the demand of continuous measurement.

关 键 词：DSP 正交信号 磁阻尼 倾角仪 

分 类 号：TP271.61[自动化与计算机技术—检测技术与自动化装置]