کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
750143 1461935 2006 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Development of a low-cost piezoresistive compass on CMOS
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Development of a low-cost piezoresistive compass on CMOS
چکیده انگلیسی
This paper presents the design and the prototyping of a low-cost monolithic CMOS compass. The system is based on a pair of piezoresistive cantilevers actuated by the Lorenz force. A special focus is given to the conditioning circuitry, which has been designed to improve sensor performances with respect to various parasitic phenomena such as noise, thermal effects and process uncertainties. It includes a tunable digital frequency synthesizer in the driving block, an original auto-centered filter in the readout circuit and an A/D converter. An analytical model of the sensing parts is proposed and described in a behavioral Analog-HDL module to support mixed-mode system level simulations. Validations of the complete system have been performed this way. The prototyping on CMOS is achieved using a low-cost (auto-aligned) bulk etching process. First experimental results are in perfect accordance with initial specifications. The obtained performances are a resolution inferior to 4° for a total surface of 10.6 mm2, a time response of 20 ms and a power consumption of 56 mW.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators A: Physical - Volumes 130–131, 14 August 2006, Pages 302-311
نویسندگان
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