期刊名称：International Journal of Innovative Research in Computer and Communication Engineering
印刷版ISSN：2320-9798
电子版ISSN：2320-9801
出版年度：2013
卷号：1
期号：8
出版社：S&S Publications
摘要：Now a day the demand of digital weighing machine increasing day by day in most of businessenterprises because measuring the weight with digital weighing machine is user friendly with variety of variousapplications. A load cell is an uncontrollable weighing device. Improvement in filtering increases the speed ofweighing and enhances the measurement accuracy. In this paper a new algorithm and architecture is proposed as weightfilter for the weighing system. We verify and implement the novel algorithm in the measuring products successfully.This paper discusses the development of a load cell based the static weighing system. In particular, the focus is onusing digital filtering techniques to remove measurement noises from the extremely low frequency noise of the staticweighing system. In this design the high resolution measurement ADC has revolutionized the entire area ofprecision sensor signal conditioning and data acquisition. Modern ADCs offer high grade code resolutions to 24bits, and greater than 19-bits of noise-free code resolution. The inclusion of on-chip PGAs in this ADC coupled withthe high resolution virtually eliminates the need for signal conditioning circuitry—the precision sensor can interfacedirectly with the ADC in many cases & further can be accessed by microcontroller to enhance measuring capabilitieswith embedded platforms. The designed system has good accuracy with high precision output.
关键词：24 bit ADC; Load cell; PIC Microcontroller; Embedded system
