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本次课程设计的内容为串行序列信号延时测试系统,首先需要明晰其整体需要实现的功能:本测试系统送出串行的序列信号,该串行序列信号经过延时电路产生一定的延迟时间以后送到了接收电路,系统收到信号以后会根据接收到的信号与原本发送信号的一致与否显示出不同的内容。 (1)按键采用自复键,每按一次给发送电路一个触发信号,连续两次触发信号的时间间隔应大于5s。 (2)手工设置发送串行序列码型,序列码M=8。 (3)接收端能判断是否为发送端送出的串行序列信号,并能测出延迟时间和码型或发出报警信号。 (4)接收端用七段LED数码管显示延迟时间,如果测出码型错误,则显示“9”字,显示时间应为2秒。 (5)接收端用发光二极管显示测出的正确序列码,显示时间为2秒。 (6)线路模拟延迟时间可以人工设置,延迟时间范围为0-8个时钟周期。 本次设计的拓展指标如下: (1)控制器的使用 (2)蜂鸣器的使用 (3)动态电路的设计 (4)键盘按键的读取与使用
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1
串行序列信号延时测试系统
摘 要
在电子电路课程设计过程中,本文分析设计要求,主要研究了串行序列信号延迟测
试的问题,综合运用原理图的方法建立了串行信号延时测试系统。
本文描述了一种串行序列信号延时测试系统的设计与实施,该系统旨在对串行序列
信号进行延时测量并验证接收到的信号的正确性。系统的核心组成部分包括发送电路、
延迟电路、接收电路、比较电路、延迟计算电路、显示电路和计数电路。技术指标方面,
系统具备按键自复键、手工码型设置、延迟时间测量、码型判断、LED 数码管显示和线
路模拟延迟等基本功能。拓展技术指标包括蜂鸣器和动态显示电路的应用。
系统设计方案经过详细论证,采用原理图方式进行了子电路设计和仿真。基础部分
包括发送电路、延迟电路、接收电路、比较电路、延迟计算电路、LED 显示电路、数码
管显示电路和计数电路。拓展部分包括蜂鸣器电路和动态显示电路。整体电路图展示了
各子电路的连接,实物电路图呈现了实际的电路实施情况。
本研究的成果为电子电路课程设计提供了详实的参考,为串行序列信号延时测试系
统的设计与实施提供了可行性和指导。这一系统具备广泛的应用潜力,可用于工程领域
的串行信号测试与验证。
关键词:延迟测试 课程设计 ISE 原理图
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Abstract
In the process of electronic circuit course design, this paper analyzes the design
requirements and primarily investigates the issue of serial sequence signal delay testing. It
comprehensively applies the schematic diagram method to establish a serial signal delay testing
system.
This paper describes the design and implementation of a serial sequence signal delay
testing system, which is aimed at measuring the delay of serial sequence signals and verifying
the correctness of received signals. The core components of the system include transmission
circuit, delay circuit, reception circuit, comparison circuit, delay calculation circuit, display
circuit, and counting circuit. In terms of technical specifications, the system features basic
functions such as self-repeat key, manual code type setting, delay time measurement, code type
determination, LED digital display, and simulated line delay. Extended technical specifications
include the application of a buzzer and dynamic display circuit.
The system design scheme has been thoroughly evaluated, and sub-circuit design and
simulation have been carried out using the schematic diagram method. The basic components
include transmission circuit, delay circuit, reception circuit, comparison circuit, delay
calculation circuit, LED display circuit, digital display circuit, and counting circuit. The
extended components include a buzzer circuit and a dynamic display circuit. The overall circuit
diagram shows the connections of various sub-circuits, and the physical circuit diagram
presents the actual circuit implementation.
The results of this research provide detailed reference for electronic circuit course design
and feasibility guidance for the design and implementation of a serial sequence signal delay
testing system. This system has wide-ranging application potential and can be used for serial
signal testing and verification in the engineering field.
Keywords: delay testing, course design, schematic diagram, ISE
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目录
一、 课题指标 .................................................................................................................. 5
1.1 整体要求 ............................................................................................................. 5
1.2 系统结构 ............................................................................................................. 5
图 1-1 系统基本结构框图 ................................................................................ 5
1.3 详细技术指标 ..................................................................................................... 5
1.3.1 基本技术指标 .......................................................................................... 5
1.3.2 拓展技术指标 .......................................................................................... 6
二、 系统设计与论证 ...................................................................................................... 6
2.1 系统框图 ............................................................................................................. 6
图 2-1 系统框图 ................................................................................................ 6
2.2 方案论证 ............................................................................................................. 6
三、 单元电路的设计 ...................................................................................................... 6
3.1 基础部分 ............................................................................................................. 6
3.1.1 发送电路的设计 ...................................................................................... 6
图 3-1 发送电路原理图 .................................................................................... 7
图 3-2 发送电路仿真结果 ................................................................................ 7
3.1.2 延迟电路的设计 ...................................................................................... 7
图 3-3 延迟电路原理图 .................................................................................... 8
图 3-4 延迟电路仿真结果 ................................................................................ 8
3.1.3 接收电路的设计 ...................................................................................... 8
图 3-5 接收电路原理图 .................................................................................... 9
图 3-6 接收电路仿真结果 ................................................................................ 9
3.1.4 比较电路的设计 ...................................................................................... 9
图 3-7 比较电路原理图 .................................................................................. 10
图 3-8 比较电路仿真结果 .............................................................................. 10
3.1.5 延迟计算电路的设计 ............................................................................ 10
图 3-9 延迟计算电路原理图 .......................................................................... 11
图 3-10 延迟计算电路仿真结果 .................................................................... 11
3.1.6 显示电路设计 ........................................................................................ 11
图 3-11 LED 显示电路原理图 ........................................................................ 12
图 3-12 LED 显示电路仿真结果 .................................................................... 12
图 3-13 数码管显示电路原理图 .................................................................... 13
图 3-14 数码显示电路仿真结果 .................................................................... 13
3.1.7 计数电路的设计 .................................................................................... 13
图 3-15 五秒计数电路原理图 ........................................................................ 14
图 3-16 五秒计数电路仿真结果 .................................................................... 14
图 3-17 两秒计数电路原理图 ........................................................................ 15
图 3-18 两秒计数电路仿真结果 .................................................................... 15
3.2 拓展部分 ........................................................................................................... 16
3.2.1 蜂鸣器电路的设计 ................................................................................ 16
图 3-19 蜂鸣器电路原理图 ............................................................................ 16
图 3-20 蜂鸣器电路仿真结果 ........................................................................ 16
3.2.2 动态显示电路的设计 ............................................................................ 16
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图 3-21 动态显示电路原理图 ........................................................................ 17
图 3-22 动态显示电路仿真结果 .................................................................... 17
四、 整体电路图 ............................................................................................................ 17
五、 实物电路图 ............................................................................................................ 17
六、 元件清单 ................................................................................................................ 17
七、 参考文献 ................................................................................................................ 17
八、 结束语 .................................................................................................................... 18
九、 附录 ........................................................................................................................ 19
附录 1 .................................................................................. 错误!未定义书签。
附录 2 .................................................................................. 错误!未定义书签。
附录 3 .................................................................................. 错误!未定义书签。
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