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Description: 本程序是一个太阳能热水器智能控制系统的程序。它以89C52单片机为核心,配合电阻型4档水位传感器、负温度系数NTC热敏电阻温度传感器、8255A扩展键盘和显示器件、驱动电路(电磁阀、电加热、报警)等外围器件, 完成对太阳能热水器容器内的水位、水温测量、显示;时间显示;缺水时自动上水,水溢报警;手动上水、参数设置;定时水温过低智能电加热等功能。
其中本文第一章主要说明了太阳能热水器智能控制系统的研究现状和本课题的主要任务,第二章对系统的整体结构作了简单介绍,第三章重点介绍了水位水温测量电路,第四章介绍了时钟电路,第五章介绍了显示和键盘电路,第六章对其他电路作了介绍,第七章是对水位测量电路的硬件调试。
本系统对于水位传感器、水温传感器的电阻数据的处理均采用独特的RC充放电的方法。它与使用A/D转换器相比,电路简单、制造成本低。特别适用于对水位、水温要求不精确的场合。
如需详细硬件电路与说明文档请与作者联系!-err
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Size: 3072 |
Author: 杨志亮 |
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Description: 太阳能热水器智能控制,它以89C52单片机为核心,配合电阻型4档水位传感器、负温度系数NTC热敏电阻温度传感器、8255A扩展键盘和显示器件、驱动电路(电磁阀、电加热、报警)等外围器件, 完成对太阳能热水器容器内的水位、水温测量、显示等
Platform: |
Size: 3072 |
Author: 陈杰 |
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Description: 8255A接口芯片的VHDL代码(ALTERA)
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Size: 226304 |
Author: 尹福斌 |
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Description: 8255A的DXP原理图,方便大家设计电路线路板-DXP schematic diagram of the 8255A to facilitate the design of circuits circuit board
Platform: |
Size: 1024 |
Author: xdhzllc |
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Description: 8255的相关资料,涉及到8255的引脚定义及功能使用-8255 relevant information related to the 8255 definition and function of the use of pin
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Size: 1121280 |
Author: 黄伟鹏 |
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Description: 8255A扩展键盘和LED显示,很有用的-8255A to expand the keyboard and LED display, very useful
Platform: |
Size: 3072 |
Author: fjsm |
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Description: 利用8255A实现的交通灯,有紧急响应与警告!-8255A to achieve the use of traffic lights, emergency response and warning!
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Size: 1853440 |
Author: 李立 |
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Description: 8255A输入输出应用(跑马灯LED)
程序较短,但已打应用得很充份-8255A Application
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Size: 1024 |
Author: cxr555 |
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Description: 一个avr控制8255a的键盘输入加显示的程序,供学者学习。-A keyboard input 8255a avr control procedures plus display for scholars to learn.
Platform: |
Size: 41984 |
Author: 陈叶飞 |
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Description: 8255A交通灯 8255A交通灯 -Traffic lights traffic lights 8255A 8255A 8255A 8255A traffic lights traffic lights
Platform: |
Size: 826368 |
Author: akang |
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Description: 8255A口使用举例!仅供学习参考与交流!错误之处还忘纠正!不胜感激!-8255A port using the example! Study reference and communication purposes only! The Office also forgot to correct the error! Appreciate it!
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Size: 133120 |
Author: Issac |
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Description: 在PROTEUS下进行的并口扩展芯片8355A的仿真成功,并且带有C51程序-PROTEUS carried out in parallel simulation of a successful expansion of the chip 8355A, and with the C51 program
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Size: 69632 |
Author: 曾 |
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Description: 51单片机外接8255A做成的交通灯程序及PROTEUS仿真结果(附对应C语言程序)-8255A PROTEUS
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Size: 84992 |
Author: hr |
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Description: 行扫描程序法,本程序是利用8255A芯片进行行扫描的程序,其过程为
STEP1: 检查是否有键按下
1)所有行输出‘0’;
2)读列状态,检查是否全‘1’;
若否,则有可能有键按下
3)延时20ms,再读列线,是否全‘1’。
若否,有键按下
STEP2:读键码(行扫描法)
1)行扫描;
逐行输出‘0’
2)读列状态。
被扫描到得行有键按下,列状态才会改变
STEP3:键分析
1)行值送(AL)
2)列值送(AH)
3)(AX)取反,得键码
STEP4:键处理
1)查表
拿键值与键值表比较,相同则记录下对应的字符码
2)显示字符
-scanning electron microscope
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Size: 1024 |
Author: 赵晶晶 |
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Description: 利用8051单片机,8255A芯片,编程实现流水灯。用proteus仿真显示结果。压缩包包含电路原理图和源程序代码。-8051, 8255A chip, programmed water lights. With proteus simulation results are displayed. The package contains the circuit schematic and source code.
Platform: |
Size: 19456 |
Author: 好景宜人 |
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Description: 8255a 并行实验 微机原理与接口技术-8255 serial
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Size: 78848 |
Author: andy |
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Description: 8255a 做输入输出作用,LED流水灯操作-The Harris 82C55A is a high performance CMOS version o
the industry standard 8255A and is manufactured using
self-aligned silicon gate CMOS process (Scaled SAJI IV).
Platform: |
Size: 260096 |
Author: zxc |
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Description: 8255A扩展驱动LCD1602,文件中带有C51程序,PROTEUS仿真文件,可以进行仿真验证-8255A expansion drive LCD1602, file with C51 procedures, PROTEUS simulation files, simulation
Platform: |
Size: 112640 |
Author: wangzhongwei |
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Description: 8255A选通的输入实验8255A INPUT EXP-8255A INPUT EXP
Platform: |
Size: 1024 |
Author: hank |
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Description: 8255A的Proteus仿真,51单片机开发,很实用的IO拓展实例,包括电路图和代码-8255A of the Proteus simulation, 51 MCU development, very practical examples of IO expansion, including circuit diagrams and code
Platform: |
Size: 49152 |
Author: 彭勃宇 |
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