摘要: 目前市场上显示器多是LCD的，但LCD有很多缺点，例如， LCD显示需要背光源的支持、很窄的视角范围、功耗比较大、响应速度有点慢等缺点，但OLED显示系统解决了这些缺点。
现在OLED显示技术虽然应用的不是很广泛，但是诸多优点，使得OLED成为研究的热门，我相信不久OLED完全可以取代LCD。
OLED技术的发展日新月异，最近发现的的软性有机发光显示技术，这项技术让曲面屏成为现实。这是手机电脑显示屏研发的热门。很有科技前瞻性。
这次我主要做的就是OLED屏幕显示，主要实现的功能就是实现动态图画还有文字的OLED显示。
为了使论文和实践更具有实用性和学习型，我做了一个基于单片机的电子称OLED显示系统,可以显示开机动态图画和进行称重，整个系统结构简单，使用方便，精度高，具有一定的开发价值。根据上述方案进行了系统硬件和软件设计，该系统以单片机作为控制核心，通过KeiluVsion3集成开发环境，采用C51语言设计了MCU应用程序，实现了嵌入式系统中汉字、字符及图片等相关信息的显示功能。
关键字: OLED 电子称 单片机
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ABSTRACT: Currently on the market monitor is LCD, but LCD has many shortcomings, for example, LCD display requires the presence of a backlight, a narrow range of viewing angles, large power consumption, response speed is slow and so on the shortcoming, but OLED display system to solve these shortcomings.
Now OLED display technology is not very widely used, but many advantages, making OLED become a hot research, I believe that soon OLED can replace LCD.
OLED technology is developing rapidly, the recent discovery of soft organic light emitting display technology, this technology allows curved screen to become a reality. This is the popular mobile phone computer display research and development. Very forward-looking in science and technology.
This time I mainly do is the OLED screen display, the main function is to achieve dynamic picture and text OLED display.
In order to make the paper and the practice is more practical and learning, I made a based on single-chip electronic said OLED display system, can display Boot dynamic pictures and were weighed. The whole system has the advantages of simple structure, convenient use, high precision, with a value of development. According to the plan of design of the hardware and the software of the system, the system with single chip microcomputer as control core, through the KeiluVsion3 integrated development environment, using C51 language design of the MCU application software, to realize the display of embedded system in Chinese characters, characters and pictures and other information related to the function.
Keyword: OLED Electronic balance MCU
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目录
1 OLED概述 ...................................................................................................................................... 1
1.1 OLED科技最新动态 .......................................................................................................... 1 1.2 OLED的发现 ...................................................................................................................... 1 1.3 OLED的发展和现状 .......................................................................................................... 1
1.3.1 国际形势 ............................................................................................................... 1 1.3.2 商品化过程 ........................................................................................................... 2 1.3.3 OLED的潜力 .......................................................................................................... 2 1.3.4 OLED在我国的发展 .............................................................................................. 3 1.4 OLED的优点 ...................................................................................................................... 4 1.5 我的研究目的和意义 ....................................................................................................... 4 2设计概述........................................................................................................................................ 5
2.1 电子称概述 ....................................................................................................................... 5 2.2系统硬件机构框图 ............................................................................................................ 5
2.2.1 称重传感器 ........................................................................................................... 6 2.2.2 电子称流程图 ....................................................................................................... 7 2.2.3 电子称接线图 ....................................................................................................... 8 2.2.4 系统电路原理图 ................................................................................................... 8
3 硬件概述....................................................................................................................................... 9
3.1 0.96寸OLED ..................................................................................................................... 9
3.1.1 选0.96寸OLED的目的 ....................................................................................... 9 3.1.2 0.96寸OLED裸屏外观 ........................................................................................ 9 3.1.3 0.96寸OLED模块 .............................................................................................. 10 3.1.4 0.96寸OLED驱动IC ......................................................................................... 11 3.1.5 四针IIC接口模块使用说明 ............................................................................. 11 3.2 HX711 ............................................................................................................................... 13
3.2.1 HX711简介 .......................................................................................................... 13 3.2.2 HX711的特点 ...................................................................................................... 13 3.2.3管脚说明 .............................................................................................................. 14 3.2.4 模拟输入 ............................................................................................................. 15 3.2.5 供电电源 ............................................................................................................. 15 3.2.6 时钟选择 ............................................................................................................. 15 3.2.7 串口通讯 ............................................................................................................. 16 3.2.8 复位和断电 ......................................................................................................... 17 3.2.9 注意事项 ............................................................................................................. 17 3.3称重传感器的原理及使用 .............................................................................................. 18
3.3.1 平行梁称重传感器的外形 ................................................................................. 18 3.3.2 称重传感器的工作原理 ..................................................................................... 18 3.3.3 称重传感器的使用 ............................................................................................. 19 3.4单片机STC90C52RC ......................................................................................................... 20
3.4.1 输入/输出引脚（I/O口线） ............................................................................ 20 3.4.2 控制口线 ............................................................................................................. 20 3.4.3 电源及其它 ......................................................................................................... 21
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4 软件设计..................................................................................................................................... 22
4.1 集成开发环境 ................................................................................................................. 22
4.1.1 Keil uVision3的简介 ...................................................................................... 22 4.1.2 Keil μVision的功能 ...................................................................................... 22 4.1.3 Keil C51单片机软件开发系统 ........................................................................ 22 4.2 取模 ................................................................................................................................. 23
4.2.1 取模软件 ............................................................................................................. 23 4.2.2 取模软件参数设置 ............................................................................................. 23 4.3 烧录软件的使用 ............................................................................................................. 24 4.4 在kile上进行软件操作 ............................................................................................. 24
4.4.1 软件程序流程图 ................................................................................................. 24 4.4.2 主要操作函数 ..................................................................................................... 25 4.4.3 进行源程序的解析 ............................................................................................. 25
5 实验结果..................................................................................................................................... 28
5.1 开机显示 ......................................................................................................................... 28
5.1.1开机显示动态图片 .............................................................................................. 28 5.1.2 开机后状态 ......................................................................................................... 28 5.1.3 进行称重后的现实 ............................................................................................. 29
6.实验总结..................................................................................................................................... 30
6.1本文主要研究工作和结论如下 ...................................................................................... 30 6.2 不足之处 ......................................................................................................................... 31 7.参考文献..................................................................................................................................... 32 8.致谢 ............................................................................................................................................ 33
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1 OLED概述
1.1 OLED科技最新动态
随着智能手机产品的逐步成熟,在现有产品上进行重大创新的难度不断提高。三星推动的OLED屏具有色域广、能耗低,产品轻薄的优点,特别是曲面屏产品Galaxy S7 Edge具有独特的产品外观和UI设计潜力,使得OLED成为智能手机创新的重要方向。OLED将逐步替换现有的LCD家族产品(TFT、In-cell),逐步成为高端市场主流,特别是在未来iPhone采用OLED之后将进一步推动行业趋势的确立。
1.2 OLED的发现
有机发光二极管是由美籍华裔教授邓青云在实验室中发现，又称为有机电激光显示，[1]这是对OLED研究的开端。邓青云先生出生于香港，移民美国后，成为柯达研究实验室的一名研究员，发现了OLED。OLED凭借着自发光的特性，完全不需要背光，而且视角特别大，非常照顾人的视觉感，大家肯定认为非常耗电，但是他却比LCD还要省电，凭借这几项优良性能，OLED显示技术成为现在世界研究的热门。
1.3 OLED的发展和现状
1.3.1 国际形势
OLED技术起源于西方发达国家，这也是因为西方，特别是美国，一直都是先进科技的发源地，因为美国集合了全世界优秀的人才，美国硅谷高管三分之一都是印度裔，要是中国的企业，大家早就受不了啦，这也是美国的精神吧，这也是大家都有一个美国梦的原因，大规模产业化还是成功于现在世界制造业的中心—东亚，主要的这些地方在日本、韩国、台湾等地区。
全球涉足OLED产业的企业很多，但是产品良莠不齐，能完全掌握技术并能大规模生产的更是少数，而且多生产的是小尺寸无源的器件，要真正对LCD进行更新换代，完全替换，还有很长的路要走，所以说OLED的研究还任重道远。因此全球OLED产业还处于产业化初期。
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