带网络接口的应变信号变送器设计
带网络接口的应变信号变送器设计(任务书,开题报告,外文翻译,论文13800字)
摘要
随着工业的不断发展，压力、温度和流量成为变送器最重要的参数。随着大规模集成电路的发展，广泛应用于现代工业的各个领域，变送器同时也广泛应用于电力、冶金等重要行业。变送器的设计在朝着智能化的方向发展。随着变送器应用领域的拓宽，关于变送器的相关研究也越来越多。
此次毕业设计是设计一种带网络接口的应变信号变送器，本文简要介绍了带网络接口的应变信号变送器的研究背景、国内外研究现状及其发展的趋势。在此基础上讨论了带网络接口的应变信号的实现方案。使用压力传感器采集压力信号，并将采样到的电压信号进行信号处理，之后输入到单片机内进行处理，最终输出4-20mA的电流信号，并且进行网络接口通信。
该带网络接口的应变信号变送器设计包括硬件和软件两个部分。硬件电路有放大滤波电路，调零电路、微控制器电路、DA转换电路、电压电流转换电路、网络接口电路等，每个单独的模块都画出了相对应的电路图，并解释了相应的原理与电路参数的计算过程；软件部分主要实现的内容是对输入进单片机内部的信号进行AD转换处理，并且实现与网络接口的通信，软件部分通过C语言进行编程。所选用的单片机是STM32F103系列的ARM微处理器，网络接口芯片选用的是W5500芯片进行接口通信。 [版权所有：http://DOC163.com]
最后对带网络接口的应变信号变送器进行了仿真，并进行了相关的仿真调节，对仿真结果进行了分析和改进。
关键词：变送器，STM32单片机，网络接口
Abstract
With the continuous development of industry, pressure, temperature, flow are the main parameters of the transmitter. With the development of large-scale integrated circuits and widely used in various fields of modern industry, transmitters are widely used in electric power, metallurgy and other important industries, the design of transmitters is also towards the direction of intelligent development, the realization of the information processing mode. The unique design of transmitter can change the inherent mode of industrial control equipment, and lay a certain foundation for the development of industrialization.
This graduation design is to design a strain signal transmitter with network interface, this paper briefly introduces the research background of strain signal transmitter with network interface, the present research situation and the trend of development at home and abroad. On this basis, the realization scheme of strain signal with network interface is discussed. The pressure signal is converted into the voltage signal by the pressure transducer and the electric signal is amplified and filtered, and then the current signal of the 4-20mA is output by the single-chip computer.
[资料来源：http://Doc163.com]
The design of the strain signal transmitter with network interface includes two parts of hardware and software. The hardware circuit has the voltage signal acquisition circuit, zeroing circuit, amplifier circuit, microcontroller circuit, network interface circuit and so on, each individual module draws the corresponding circuit diagram and explains the corresponding principle and circuit parameter calculation process;The main part of the software implementation is to perform AD conversion processing on the signals input into the MCU, and to realize the communication with the network interface. The software part is programmed through the C language.The selected MCU is the STM32F103 series of ARM microprocessors, and the W5500 chip is used for the network interface chip for interface communication.
Finally, the strain signal transmitter with network interface is simulated, and the related simulation is adjusted, and the simulation results are analyzed and improved.
Key Words: transmitters,STM32 microcontroller, network interface
[资料来源：http://doc163.com]
目录
摘要 I
Abstract II
第1章绪论 1
1.1 研究背景及意义 1
1.2 带网络接口的变送器的现状及发展趋势 2
1.3 本文的研究内容及结构安排 3
第2章带网络接口的应变信号变送器总体设计 4
2.1 带网络接口的应变信号变送器总体设计分析 4
2.2 基本功能模块设计方案 5
2.2.1 输入信号放大滤波方案分析 5
2.2.2 电压电流转换电路方案分析 6
2.3 本章小结 6
第3章带网络接口的应变信号变送器的硬件电路设计 7
3.1 输入电压放大滤波电路 7
3.1.1 输入电压放大电路 7
3.1.2 输入电压滤波电路 9
3.2 输入电压调零电路 9
3.3 微控制器电路 10
3.4 DA转换电路 12
3.5 电压/电流转换电路 13
3.6 网络接口电路 15
3.7 本章小结 16
第4章带网络接口的应变信号变送器软件设计 17
4.1 主程序设计思路 17
4.2 AD转换程序设计 18
4.3 网络接口程序设计 19
4.4 本章小结 21
第5章带网络接口的应变信号变送器的仿真测试分析 22
5.1 输入电压放大滤波电路仿真测试 22
5.2 输入电压调零电路仿真测试 22
5.3 电压电流转换电路测试 23
[来源：http://Doc163.com]
5.4 本章小结 25
第6章总结与展望 26
6.1 设计工作总结 26
6.2 研究展望 27
参考文献 28
附录 29
致谢 36
[资料来源：https://www.doc163.com]