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16 times over-sampling technique based on the adc module of stellaris™family of chips

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成果類型:
期刊論文、會議論文
作者:
Li, Tu;Jun'An, Liu;Juanjuan, Song
通訊作者:
Li, T.(tulip1907@163.com)
作者機構:
[Li, Tu] Department of Computer Science, Hunan City University, Hunan, Yiyang 413000, China
[Juanjuan, Song] Department of Chemical and Environmental Engineering, Hunan City University, Hunan, Yiyang 413000, China
[Jun'An, Liu] Department of Machinery Engineering, Hunan Institute of Engineering, Hunan, Xiangtan 411101, China
語種:
英文
期刊:
Lecture Notes in Electrical Engineering
ISSN:
1876-1100
年:
2011
卷:
86 LNEE
期:
VOL. 1
頁碼:
403-408
會議地點:
Wuhan, China
會議主辦單位:
(1) Department of Computer Science, Hunan City University, Hunan, Yiyang 413000, China; (2) Department of Machinery Engineering, Hunan Institute of Engineering, Hunan, Xiangtan 411101, China; (3) Department of Chemical and Environmental Engineering, Hunan City University, Hunan, Yiyang 413000, China
出版者:
Springer Verlag, Tiergartenstrasse 17, Heidelberg, D-69121, Germany
機構署名:
本校為第一機構
院系歸屬:
信息與電子工程學院
摘要:
The ADC module with its 10-bit-resolution is integrated into the partial products of Stellaris series microcontroller. But the actual precision obtained is less than 10. This paper provides a software-based general average over-sampling technology which use an oversampling frequency of the cycle timer which is running, timer in the past triggers a sampling frequency conversion to generate an additional clear ADC interrupt, accumulated 16 times in the conversion, this average value of 16 samples, and it will remove global variables and the total sample count variable. This way improve the results of the effective number of bits (ENOB). However, taking up most of the sampling sequencer resources of the system, this method has a negative impact on the entire system for it requires additional code to perform the average and additional disruption. ©2011 Springer-Verlag Berlin Heidelberg.

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