水位报警器毕业论文.doc

郑州大学毕业设计（论文）题目： 水位报警器 指导教师： 职称： 学生姓名： 学号： 专 业： 电子工程 院（系）： 完成时间： 年 月 日目录摘要 ……………………………………………………………………………………………..3绪论…………………………………………………………………………………………………………….4引言……………………………………………………………………………………………………..………5系统设计方案…………………………………………………………………………………………………..6系统测量方法…………………………………………………………………………………………………..6一、总体方案…………………………………………………………………………………………………...7传感器的选择………………………………………………………………………………………….........9二、单元模块设计……………………………………………………………………………………………...102.1水位监控……………………………………………………………………………………………...112.2编码译码部分………………………………………………………………………………………...11 2.3显示部分……………………………………………………………………………………………...13特殊原件的介绍……………………………………………………………………………………………….13CD4066…………………………………………………………………………………………………1374LS147…………………………………………………………………………………………………14三、显示器的选择…………………………………………………………………………………………….153.1各单元模块的连接…………………………………………………………………………………..17四、系统调试………………………………………………………………………………………………….184.1测试过程…………………………………………………..………………………………………….184.2功能调试法…………………………………………………………………………………………...194.2.1原理调试法…..………………………………………………………………………………..194.2.2关键点的测量调试法………………………………………………………… … …………..19五、系统功能………………………………………………………………………………………………….20六、设计总结………………………………………………………………………………………………….20七、参考文献………………………………………………………………………………………………….21致谢…………………………………………………………………………………………………………….22附录…………………………………………………………………………………………………………….23水位报警器摘要：本水位监测报警器使用低压直流电源就可以对5~15厘米的水位进行监测，用LED显示和数码管显示水位，并可以对不再此范围内的水位发出报警。

主要采用CD4066、74LS86、74LS32、CD4511芯片，再加上数码管、蜂鸣器、发光二极管、电阻这些器件组成一个简单而灵敏的监测报警电路，操作简单，接通电源即可工作因为大部分电路采用数字电路，所以本水位监测报警器还具有耗能低、准确性高的特点关键字：译码电路 报警电路 监测电路Abstract: The water level alarm monitoring the use low-voltage DC power will be able to 5 to 15 centimeters of water level monitoring, with LED display and digital display of water level, and this can no longer Within the scope of a water level alarm. Mainly CD4066, 74LS86, 74LS32, CD4511 chips, coupled with digital control, buzzer, light-emitting diode, the resistance of these devices composed of a simple and sensitive monitoring alarm circuits. Because the majority of circuits using digital circuitry, so the water level monitored alarm system also has low energy consumption, high accuracy of the characteristics. Keyword: Decoding circuit alarm circuit monitoring circuit绪论我国是水资源丰富的大国，但对水资源的利用对与我国来说仍然是一个非常严峻的问题。

水库作为国家的重要资源，在水的管理方面具有着举足轻重的作用，我国的水灾频频发生，因此必须监测江河、湖泊与水库等的水位及这些区域的降雨量这种监测不仅可以预防水灾、及时进行防范决策提供大量可靠地数据和资料，同时还可以防洪抢险救灾和保护人民生命财产安全发挥重要作用目前，国内许多水位监测站监测水位和降雨量仍采用人工方法该方法不但存在测量的人身安全问题，而且存在数据测量准确度低，监测实时性不强等问题，这会严重影响正常的工作效力为此需要对水位进行自动显示监测和报警水资源有着大量的能量，合理的应用好水资源可以更好的为人民服务，但是目前我国及全世界对水资源的利用和监控还有着很大的缺陷，水位报警器装置的研究还不够完善，虽然相比以前，人们对水位的控制得到了很大的提高，但随着生态平衡得逐渐破坏，随之带来了很多的问题，所以对水资源的合理利用，对水位的合理监控将显得越来越重要相信随着科技的发展，人们可以更好的解决这一系列的问题为了实时准确监测水位及降雨量，设计了一套采用CD4066双向模拟开关进行水位监控，LED发光二极管和数码管显示水位高度，蜂鸣器给予报警从水位监控器到水位显示器用74LS147编码器编码，4511译码器译码。

由于74LS147是低电位编码器，故要用4077同或门对水位监控器处理后的数据输入74LS147编码，再用CD4069处理74LS147输出的数据传入4511译码利用该系统可以实现江河、湖泊及水库等水位和降雨量的有效监测和报警防范China is rich in water resources of the country, but the utilization of water resources and is still a very serious problem in China. Reservoirs as important resources of the country, has a pivotal role in water management, flood frequency, so you must monitor water levels in rivers, lakes and reservoirs and rainfall in these regions. Such monitoring will not only flood prevention, precautionary decisions in a timely manner to provide a large number of reliable data and information, while flood disaster relief work and to protect people's life and property safety plays an important role. At present, many water stations to monitor water levels and rainfall is still using artificial methods. This method not only measure the security of persons, data accuracy and low, issues such as monitoring real-time performance is not strong, it will seriously affect the normal work force. Need to automatically show the water level monitoring and alerting. Water resources has large of energy, reasonable of application good water resources can better of serving, but currently my and the world on water resources of using and monitoring also has is large of defects, water level alarm device of research also enough perfect, while compared to yiqian, people on water level of control are has is large of improve, but as ecological balance have gradually damage, with of brings has many of problem, so on water resources of reasonable using, on water level of reasonable monitoring will is increasingly important. Believe that with the development of science and technology, people can better address these issues. In order to accurately monitor water levels and rainfall in real time, designed a CD4066 bi-directional analog switch for water level monitoring, LED led digital tube 。