在我们以前的博客文章之一中，我们谈到了AC motors，，，，the workhorse of modern industrial automation. We learned how they use magnets, electromagnets, and magnetic fields to generate huge amounts of torque to run our industrial processes.

为了了解现代电机控制的工作原理，让我们仔细研究一下3阶段AC感应电动机的工作原理。

This is the first post in a series of upcoming posts on Industrial Automation 101 topics.

These posts are geared towards people new to the industry who are looking for basic information on how some of the gear in the industrial automation field works, when to use it, and maybe even how to troubleshoot it here and there.

For this tech tip we go to a recent blog post that takes a good look at the basic tools you need if you're a technician, an electrician, or a maker.

从示波器到钳子再到电源，这些都是我们发现必不可少的工具。

了解您需要什么质量，寻找哪些功能以及在哪里购买新的或二手的建议。

How do you control coatings on a device the width of a human hair?

在当今世界，超细小的微电动系统（MEMS）在手机，汽车，无人机和医疗传感器中提供了关键功能，仅举几个地方。

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50 or 60 Hertz - Roughly.

Measure the main power grid frequency, he said. It will be fun, he said…. Actually, pretty sure I said something like, “it will be easy”... and I was mostly right, and best of all, it did turn out to be fun!

似乎既是一个合理又简单的要求。要求是将电源电网频率测量到解决of 0.01 Hertz, and to do it every 125 milliseconds (roughly; it could be a max of 200 milliseconds, but not much longer).

Why? In this case, the chase is better than the catch. It's enough to say the customer had his reasons, and this blog is about the chase.

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Star Struck:

从小我就一直在晚上抬头。不确定我什么时候爱上了天文学，但我想起了我小时候就抬头看着星星。

I have ebbed and flowed with the amount of time and equipment I have had to spend on the hobby. In Australia I had a fully enclosedfiberglass domed observatory，当我的家人搬到美国时，我选择不运送，但是仰望的愿望并没有消失。

Only the constellations at the horizon can be seen in both hemispheres, and even those look upside down compared to what I used to see. So I wanted to get something up and running fast here that would allow me some time to get my bearings in the sky and to share my new stars with my mates back in Australia via my personal website.

In this week's blog, I would like to share what astronomy tools I currently have set up, thanks to some Opto 22 hardware and groov.

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安全层：

我希望有，但没有。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。：humans. You know, some thing or device that you could simply put at your network's front door and have it reject all the bad guys, but allow the friendlies in without question. Secure and easy is still a wish.

然后，解决方案确实归结为层。添加每个层都需要花费大量时间和大量的努力才能剥离，以至于大多数攻击者只是放弃并继续前进。

过去的几篇博客文章已经讨论了其中的一些层次，因此现在让我们把所有层次放在一起，看看我们如何建立一个非常强大的移动工业自动化网络。

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Tale of two LANs

Would you like to view critical plant status from anywhere on the Internet?

您是否担心，如果将自动化网络连接到公司的IT网络（可能连接到Internet），则错误的人可以访问您的控制系统？还是像YouTube这样的流量可能会影响您的自动化网络吞吐量？

您是否想收到电子邮件或短信，以提醒您对带外状态的条件，但是由于您的自动化网络没有链接到IT部门电子邮件服务器，因此您无法设置类似的内容？

从OT中分割IT（信息技术）网络有很多优势，只有几个缺点（Operational Technology，换句话说，您的控件）网络。虽然有几种不同的方法来细分网络，但在此博客中，我们将使用两种Opto 22产品之一将它们分开：德赢下载SNAP PAC控制器and凹槽。

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安全通信的两个密钥：

什么是SSL/TLS和HTTPS？您可能已经听说过它们在互联网上使用，并且在登录银行时有可能使用它们，但是whatare they?

Is there anything you need to do to use these secure protocols?

当您使用网络浏览器中的“窗帘后面”时会发生什么？

在本周的博客中，我们将仔细研究SSL/TLS和HTTP，以继续以网络安全为主题。