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缓解人与机器之间的接口
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缓解人与机器之间的接口
这是很容易认为触摸屏作为现代工业控制–光滑图像算子研读屏幕模拟图的人/机界面中最重要的部分，有引诱我们以为这是所有现代工业机械应控制方式。
事实上，许多其他组件使人们能够与工业机器进行交互。例如，交换机似乎很简单，但您必须为高可靠性而设计用于紧急停机的开关。旋转开关手轮，使运营商进入简单的离散的机器配置，而滑块和旋转电位器使更细致的设置。导航操纵杆可用于移动控制轮静态用户界面的点，而基于摇杆电位器可用于安全关键情况作为工作头在机床的定位。
此外，蜂鸣器和扬声器可提供音响警告，而嵌入式麦克风可以在反馈回路中使用以确保探测器可以高于环境噪声不绝于耳，噪声环境中尤其重要。
触摸输入系统提供多种控制工业机器的方法。各种触摸屏技术，特别是那些在恶劣环境下工作的触摸屏技术，使开发人员能够创建适应机器使用方式的复杂的用户界面。
Stop before you start
Most industrial machinery needs some sort of emergency stop button to ensure that it is easy to stop it when things go wrong. In such situations， visibility and reliability are key factors in ensuring operators can find it easily and know that it will work when they press it. Omron Electronics’ A165E is an interesting example of the type： the switch has a safety lock to prevent misuse， and a direct opening mechanism so that the contacts can be accessed and opened in an emergency， such as if they are welded together. Versions are available with a yellow ring that surrounds the switch， to make it even more visible， and an internal light. Various switching options are available， including SPST， DPST and TPST.
Once you can be sure of stopping your industrial machinery， the next step is to configure its operation. We may be used to drop-down menus and swipe gestures on our phones and laptops， but simple machinery demands simple interfaces， such as rotary position switches that can be hardwired to set certain functions. C&K’s RTA series of up to four-pole coded rotary switches are designed for setting up appliances， medical equipment， alarm systems， building automation， or heating and ventilation systems. The series， which has so many options that C&K offers a “Build a Switch” guide in the datasheet， can be configured to produce either decimal or hexadecimal codes on its outputs， depending on the position of the switch.
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