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A Digitized Water Display System Based on RS-422 Bus

机译：基于RS-422总线的数字化水显示系统

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We present in this paper some technical progresses in developing a novel information display mechanism called digitized water display (DWD). In sharp contrast to traditional display screens which use the brightness/color of built-in array of pixels on a flat panel to display information contents, the digitized water display we developed has no fixed display screen. Instead, we use an array of water nozzles to precisely control the timing of water drops so that the pattern of water drops form a dynamic display screen to show text/graphic information. Since such digitized water display can be easily built in large scale (several meters in height and width), it is able to produce quite impressive visual impact. This type of unconventional display mechanism is well suited for various digital signage applications such as advertisements, indoor/outdoor event displays, product promotions, and entertainments. Since a typical digitized water display system requires to precisely control hundreds (sometimes thousands) of water nozzles, the control system architecture and implementation strategy play an important role in its design, implementation and operations. The main focus of this paper is to provide technical details on a new control system architecture we developed based on RS-422 bus and associated control protocol, hardware/software design, and implementation.
机译：我们在本文中介绍了开发一种称为数字化水显示（DWD）的新型信息显示机制的一些技术进展。与传统的显示屏（使用平板显示器上的内置像素阵列的亮度/颜色显示信息内容）形成鲜明对比的是，我们开发的数字化水显示器没有固定的显示屏。取而代之的是，我们使用水喷嘴阵列来精确控制水滴的计时，以便水滴的图案形成一个动态显示屏，以显示文本/图形信息。由于这样的数字化水显示可以轻松地大规模构建（高度和宽度为几米），因此可以产生令人印象深刻的视觉效果。这种类型的非常规显示机制非常适合各种数字标牌应用，例如广告，室内/室外事件显示，产品促销和娱乐。由于典型的数字化水显示系统需要精确控制数百个（有时是数千个）水喷嘴，因此控制系统的体系结构和实施策略在其设计，实施和操作中起着重要作用。本文的主要重点是提供有关我们基于RS-422总线和相关控制协议开发的新控制系统体系结构的技术细节，硬件/软件设计和实现。

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