毕业设计书.doc

0 江苏科技大学本科毕业设计(论文) 学院电子信息学院专业自动化学生姓名朱广志班级学号 0640301135 指导教师徐绍芬二零壹零年六月 1 江苏科技大学本科毕业论文印染上的烘干温度自动检测系统随着社会经济的不断进步与发展,人们生活的改善、精神和物质生活的要求不断提高,两者相辅相成,缺一不可,这就迫使我们努力提高工业等产品质量。产品的质量取决于生产工艺,而温度和湿度是印染、纺织、电子等行业工艺的主要组成部分。这就要求我们开发出一套功能稳定的烘干温度自动检测系统, 来广泛应用于现有的各类行业中。全文共分七部分。第一部分介绍课题的来源,测试系统可以实现的功能及系统的主要技术指标。第二部分水分含量测试方法概述。介绍水分含量的集中测试方法如称重法、交流电容法,电导法、射频法等集中测试方法,并给出这几种测试方法的原理。第三部分水分传感器。介绍 JCJ200Y 高温测湿传感器的检测原理、构成、功能特点及后续处理电路。第四部分温度传感器的选择。第五部分烘干系统的硬件设计,这是全文的重点,该部分介绍了 PLC 系统的扩展电路,与温度传感器的接口。第六部分是软件的设计。第七部分是测试结果与误差分析。 2 Drying temperature automatic detection system on textile printing With the economic and social progress and development, improving people's life, spiritual and material life requirement enhances unceasingly, plement each other, beshort ofone cannot, forcing our efforts toimprove the quality ofproducts, such asindustry. Product quality depends onthe production process, and temperature and humidity isprinting and dyeing, textile, electronic industries process ponent. This requests ustodevelop aset offunctions stability ofdrying temperature automatic detection system, widely used invarious industries ofexisting. The paper made ofseven parts. The first part introduces the subject, test system can realize sources and functions ofthe main technical indexes system. The second part ofthe moisture content test method. Introduce the moisture content oftest methods such asweighing method concentrated, communication, electric capacitive, rfmethod concentrated test methods, and the test method ofthe theory. The third part moisture sensor. JCJ200Y temperature humidity measurement sensor isintroduced and the detection principle, structure, function and characteristics and subsequent processing circuit. The fourth part ofthe temperature sensor. The fifth part ofdrying systems hardware design, this isthe key part, this text introduced PLC system, and the extension ofthe temperature sensor circuit ofthe interface. The sixth part isthe software design. The 7th part isthe test results and the