کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
737793 1461921 2012 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Direct analog-to-microcontroller interfacing
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Direct analog-to-microcontroller interfacing
چکیده انگلیسی

This paper will demonstrate how signals from analog sensors can be directly interfaced to any digital embedded system even though they may not be equipped with an on-chip ADC (Analog-to-Digital Converter), comparator or OP amp (Operational Amplifier). With only two resistors and one capacitor, we will present a solution that allows analog voltages to be measured directly using only a few digital I/O-pins. The digital target system requirements are minimized and limited to only two digital I/O-pins (with tri-state capability). No ADC, comparators, timers or capture modules are necessary. The extremely modest hardware requirements make it a suitable solution also for CPLDs/FPGAs (Complex Programmable Logic devices/Field Programmable Gate Arrays). Since this solution will allow even the simplest embedded system to be interfaced to analog voltage sensors, it has the potential of reducing design costs considerably. The proposed design is for DC or low-frequency signals and compared to other similar solution, this design needs no embedded analog blocks at all.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators A: Physical - Volume 179, June 2012, Pages 105–113
نویسندگان
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