基于FPGA的电网基本电量数字测量系统的设计

文档编号:JD151  字数:22275,页数:75

摘要：伴随着集成电路（IC）技术的发展，电子设计自动化（EDA）逐渐成为重要的设计手段，已经广泛应用于模拟与数字电路系统等许多领域。电子设计自动化是一种实现电子系统或电子产品自动化设计的技术，它与电子技术，微电子技术的发展密切相关，它吸收了计算机科学领域的大多数最新研究成果，以高性能的计算机作为工作平台，促进了工程发展。EDA的一个重要特征就是使用硬件描述语言（HDL）来完成的设计文件，VHDL语言是经IEEE确认的标准硬件语言，在电子设计领域受到了广泛的接受。本文首先综述了EDA技术的发展概况，FPGA/CPLD开发流程，以及VHDL语言的开发步骤；然后介绍了电网基本电量，包括频率、功率因数、相位测量的一般原理；着重介绍了用VHDL语言完成频率、功率因数、相位的设计工作；最后介绍了外围硬件电路的设计及系统开发中的几点体会。

关键词：EDA   测量   硬件描述语言   FPGA/CPLD
                                  

Abstract：Accompany with the technical development of integrated circuit( IC), the electronics design automation( EDA) becomes the important design means gradually, already extensive applied in imitate to wait many realms with numerical electric circuit system.The electronics design automation is a kind of technique that carries out the electronics system or the electronics products to automate the design, it with the electronics technique, the technical development of micro-electronics is closely related, it absorbed latest research result of the calculator science realm, being the work terrace with the calculator of the high performance, promoting engineering develop.EDA an important characteristic is to use the hardware description language( HDL) to come to finished design document, language of VHDL is through the standard hardware language that the IEEE confirm, designed the realm to be subjected to accept extensively in the electronics.This text first overview technical development general situation of EDA, the FPGA/ CPLD  development process, and the development step of the VHDL language;Then introduced the basic electricity quantity of charged barbed wire net, include the frequency, power factor, mutually a general theory for measure;Emphasized to introduce to complete the frequency, power factor with the language of VHDL, mutually the design work of;Introduced the design and the system developments of the outer circle hardware electric circuit finally in of what time realize.

Keywords：EDA   Measurement   VHDL   FPGA/ CPLD

目   录

第1章  现场可编程门阵列FPGA和VHDL语言............................................. 3
1.1 电子设计自动化（EDA）概述 .....................................................3
1.2 FPGA/CPLD的发展前景及开发流程................................................. 4
1.2.1 FPGA/CPLD简介 ...............................................................4
1.2.2 FPGA/CPLD的开发前景 .........................................................5
1.2.3 FPGA/CPLD的开发流程......................................................... 6
1.3 硬件描述VHDL语言 ..............................................................6
1.3.1 VHDL语言简介............................................................... .6
1.3.2 VHDL的特点 ..................................................................7
1.3.3 VHDL的描述风格 ..............................................................8
1.3.4 VHDL语言编程................................................................ 8
1.4 MAX+PLUSⅡ概述............................................................... .9
1.4.1 MAX +P LUSⅡ的特点 ..........................................................9
1.4.2 MAX+PLUSⅡ设计流程...........................................................10
第2章  电网基本电量数字测量方案的比较与论证........................................11
2.1 频率测量 ......................................................................11
2.1.1 频率测量方案比较 ............................................................11
2.1.2 频率测量系统设计 ............................................................11
2.2 相位测量 ......................................................................12
2.2.1 相位测量方案比较 ............................................................12
2.2.2 相位测量系统设计.............................................................12
2.3 功率因数测量.................................................................. 14
2.3.1 功率因数测量方案比较.........................................................14
第3章  VHDL语言实现模块设计 .......................................................15
3.1 电网频率测量系统的模块构成 ....................................................16
3.1.1 分频模块 ....................................................................16
3.1.2 计数模块 ....................................................................17
3.1.3 乘法模块 ....................................................................18
3.1.4 除法模块 ....................................................................18
3.1.5 数制转换模块 ................................................................19
3.1.6 片选模块.................................................................... 19
3.1.7 动态显示模块................................................................ 20
3.2 电网功率因数测量系统的模块构成................................................ 21
3.2.1 计数模块.................................................................... 21
3.2.2 移位模块............................................................... .....23
3.2.3 乘法模块.................................................................... 23
3.2.4 除法模块.................................................................... 24
3.2.5 相位_功率因数转换模块....................................................... 24
3.2.6 动态显示模块 ................................................................25
3.3 电网相位测量系统的模块构成 ....................................................25
3.3.1 计数模块 ....................................................................26
3.3.2 移位模块 ....................................................................27
3.3.3 除法模块.................................................................... 27
3.3.4 数据选择模块 ................................................................28
3.3.5 动态扫描译码显示模块 ........................................................28
第4章  外围硬件电路设计 ...........................................................29
4.1 ACEXIK器件简介 ................................................................30
4.2 传感器的设计及选型 ............................................................31
4.2.1 霍尔电压传感器的选型（选CHV_100）........................................... 31
4.2.2 霍尔电流传感器的选型（选CHB_300S）...........................................32
4.3 LED显示器..................................................................... 34
4.3.1 LED显示器结构与原理......................................................... 34
总结 .............................................................................35
参考文献.......................................................................... 36
致  谢 ............................................................................37
附录A  VHDL程序清单............................................................... 38
附录B   顶层模块图 ................................................................57

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