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论文编号:ZD842 论文字数:15343,页数:29
摘 要
自确认传感器能够实现传感器故障的自诊断和自恢复,除了提供被测量的确认的测量值之外,还提供测量值的不确定度、测量值的状态等表征传感器输出可信度的参数,可以实时了解传感器的工作状态,及时采取相应的措施,大大提高监测系统的可靠性。随着微电子技术的进步，现场可编程门阵列FPGA发展迅速。目前FPGA正以其超大规模单芯片容量和硬件电路高速并行运算能力，越来越多的被用作各种规模的系统集成单芯片解决方案。本文针对位移量的特点，探讨了一种基于FPGA的自确认传感器的模型建立与实现。
关键词：现场可编程逻辑门阵列（FPGA）、位移测量、自确认传感器
Abstract
Self-validating (SEVA) sensor has the ability of self-diagnostics and self-reconstruction, it provides not only the validated measurement value, but also the validated uncertainty and measurement value status, which represent the credibility of sensor’s output. By using self-validating sensor, we can get thework condition of the sensor and take proper action in real time.With the development of micro-electronics technology, Field Programmable Gate Array一FPGA is increasingly applied to single chipsolutions of system integration with grand capability on single chip andhigh speed parallel calculation ability.Aimed at the characteristics of the displacement,one Self-validating sensor model based on FPGA is discussed and framed in the thesis.
Keywords：FPGA、wireless meter reading、Self-validating (SEVA) sensor
目 录
摘要…………………………………………………………………………………………… Ⅰ
1 前言………………………………………………………………………………… .…… .1
1.1 课题的背景与意义…………………………………… …… ……………………….1
1.2 自确认传感器的研究现状……………………………………………………………2
1.3 课题的主要内容………………………………………………………………………4
2 自确认位移传感器的系统设计……………………………………………………………...5
2.1 总体方案设计……………………………………………………………… …………5
2.2 位移传感器的工作原理……………………………………………………………… 5
2.3 自确认位移传感器的硬件设计……………………………………………………… 8
2.3.1 前置电路设计………………………………………………………………. 9
2.3.2 A/D转换电路的设计………………………………………………………. 15
2.3.3 FPGA的电路设计…………………………………………………………….18
2.3.4 FPGA的设计流程…………………………………………………………….22
3 总结…………………………………………………………………………………………27
致谢…………………………………………………………………………………………… .28
参考文献……………………………………………………………………………………… 29
