微弱电流信号的检测和放大电路
学生学号： 学生姓名： 专业班级： 指导教师： 职 称： 起止日期： 2015.6.23～2015.7.3
机电工程学院
专业模块课程设计说明书 （测控技术与仪器专业）
专业模块课程设计任务书
一、设计题目：微弱电流信号的检测和放大电路 二、设计任务及要求
任务：设计电路实现对微弱电流信号的检测与放大，将微弱电流信号转换成有用的电压信号。
要求：电路要包括电流/电压转换电路，信号放大电路，调制和解调电路，并采用multisim仿真。
三、设计时间及进度安排
设计时间共两周（2015.6.23～2015.7.3）,具体安排如下表： 周安排 设 计 内 容 设计时间 布置设计任务和具体要求及设计安排；提出设计思路和初步设计方案、根据设计方案，进行具体的设计，根据15.06.23-15.06.26 第一周 指导意见，修改具体设计；仿真实现设计要求，指导、检查完成情况。 设计、仿真，撰写、完成专业模块设计报告, 验收、15.06.29-15.07.03 第二周 考核 四、指导教师评语及成绩评定
指导教师评语: 年 月 日 成绩 指导教师(签字): - 1 -
微弱电流信号的检测与放大
目 录
专业模块课程设计任务书 ························································································ 1
一、设计题目：微弱电流信号的检测和放大电路 ······················································ 1 二、设计任务及要求 ··························································································· 1 三、设计时间及进度安排 ····················································································· 1 四、指导教师评语及成绩评定 ·············································································· 1 第一章 课程设计的目的 ···················································································· 1 第二章 课程设计说明书正文 ·············································································· 2
一、任务的提出 ································································································· 2 二、方案论证 ···································································································· 2 三、电路基本结构 ······························································································ 3 四、电路的设计与实现 ························································································ 3
1. I\\V转换电路 ···················································································· 3 2. 电压放大电路 ··················································································· 5 3. 相敏检波电路 ··················································································· 7 4. 电压比较器 ···················································································· 10 5. 低通滤波器 ···················································································· 11 五、 试验调试及结果的分析 ·········································································· 14 结论 ····················································································································· 15 参考文献 ·············································································································· 15
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专业模块课程设计说明书
第一章 课程设计的目的
课程设计是学生理论联系实际的重要实践教学环节，是对学生进行的一次综合性专业设计训
练。通过课程设计使学生获得以下几方面能力，为毕业设计（论文）奠定基础。
1．进一步巩固和加深学生所学一门或几门相关专业课（或专业基础课）理论知识，培养学生设计、计算、绘图、计算机应用、文献查阅、报告撰写等基本技能；
2．培养学生实践动手能力及独立分析和解决工程实际问题的能力；
3．培养学生的团队协作精神、创新意识、严肃认真的治学态度和严谨求实的工作作风。
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