Home automation systems that are a step beyond your basic "X-10" light control usually consist of a mechanism for controlling and monitoring digital input and output modules. These systems may include an Ocelot with SECU16(I) and/or RLY8-XA expansion units, Caddx Security Systems, Elk M1 Gold Systems, JDS Stargate and others. Their basic functionality of simple, digital inputs and outputs serves most automation and security purposes.
What happens when you want to expand your automation system to include custom measurements such as temperature, water softener salt level indicator, distance measurement, weight measurements, etc...? You could use a "canned" system to measure temperature for instance but what if you want something more versatile? Well one answer would be to have a monitoring system that incorporated a way to measure "analog" inputs via an analog to digital converter. This way you could now directly measure these items with your automation system.
This Guide will describe basic analog to digital converter principles. Its intent is to introduce this topic and also describe how one would go about the necessary calculations needed for general home automation purposes. I would like to thank Guy Lavoie for kindly reviewing this Guide as his efforts made this a greatly improved article.
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What happens when you want to expand your automation system to include custom measurements such as temperature, water softener salt level indicator, distance measurement, weight measurements, etc...? You could use a "canned" system to measure temperature for instance but what if you want something more versatile? Well one answer would be to have a monitoring system that incorporated a way to measure "analog" inputs via an analog to digital converter. This way you could now directly measure these items with your automation system.
This Guide will describe basic analog to digital converter principles. Its intent is to introduce this topic and also describe how one would go about the necessary calculations needed for general home automation purposes. I would like to thank Guy Lavoie for kindly reviewing this Guide as his efforts made this a greatly improved article.
Click here to view the article