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1

A set of low-power microcontroller-based modules used for testing of small energy measurement methods

Palmowski D., Lentka G., Rutkowski J.

Przegląd Elektrotechniczny

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2018

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R. 94, nr 11

55--58

EN

Estimation of energy consumption of low-power devices is not widely discussed in the scientific literature, but this topic is getting more and more popular. Evaluation process of newly developed methods and instrumentation requires carefull treatment. In order to fulfill this niche, the set of micro-power microcontroller based devices was proposed. The devices represent typical energy consuption profiles and allow experimental verification of newly developed methods for energy estimation.

PL

Estymacja poboru energii układów mikromocowych nie jest zbyt obszernie opisywana w literaturze, choć temat ten staje się coraz bardziej popularny. Testowanie metod i urządzeń pomiarowych małych energii wymaga zastosowania odpowiedniego podejścia, w tym celu zaproponowano i przebadano zestaw urządzeń reprezentujących typowe profile poboru energii i pozwalających praktycznie weryfikować metody estymacji poboru małych energii.

2

Energy harvester based on Terfenol-D for low power devices

Mech R., Kaleta J., Lewandowski D., Wiewiórski P.

Interdisciplinary Journal of Engineering Sciences

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2014

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Vol. 2, no. 1

8--12

EN

Rising requirements for a new constructions, force engineers to monitor them all day long. An attractive solution seems to be applications of wireless sensors. However, there is a barrier limiting their application, which is the need to supply them with an electrical power over extended period of time without using additional wiring or batteries. The potential solution of this problem seems to be an energy harvesting. This paper proposes a new energy harvesting device based on magnetostrictive material. In the course of the experiments with using Terfenol-D rods as actuators and sensors it has been shown, that the mechanical impact to the magnetic core based on Terfenol-D rod, NdFeB permanent magnets and coil set allowed to obtain an electric power signal enough to supply device of 100 Ohm load on their active state.

3

Image Processing for Low-power Microcontroller Application

Hercik R., Slaby R., Machacek Z.

Przegląd Elektrotechniczny

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2012

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R. 88, nr 12a

343-346

EN

This paper focuses on the signal processing of the image signal from the camera system, which is applied to the low-power microcontroller. Image signal loading and processing is realized on the low-power Freescale DSP56F805, which is combination of the digital signal processor and the controller. There are described data and control signals connected from the digital camera and connection to specified pins of the digital signal processor. The number of scanning images per second depends on the clock signal frequency that is generated inside digital signal processor. The defined synchronization clock ensures correctly data capturing form the camera. An external RAM memory is necessary to use because of the insufficient size of the storage space for scanned images. There is implemented algorithm of frequency analyses for verification of low-power microcontroller capability. The amplitude and phase frequency spectrum of the scanned image signal is obtained by 2D FFT (Fast Fourier Transform) application. The amplitude frequency spectrum contains information about colors and the phase frequency spectrum contains information about edges and transitions in the analyzed image. Key parameters and elements of the image can be analyzed by frequency spectra results. Mainly it is important for the classification and sorting of image data. The programming implementation is realized in CodeWarrior programming environment with the ProcessorExpert tool using, which are supplied by Freescale Company.

PL

Artykuł ten skupia się na przetwarzaniu obrazu z systemu kamer zaimplementowanym w mikrokontrolerze niskiej mocy. Ładowanie i przetwarzanie obrazu jest realizowane na mikrokontrolerze Freescale DSP56F805, który jest połączeniem przetwornika sygnału cyfrowego i kontrolera. Opisany został sposób w jaki dane i sygnały sterujące z aparatu cyfrowego są podłączone do określonych pinów cyfrowego przetwornika sygnału. Programowanie odbywa się w środowisku CodeWarrior z narzędziami wykorzystującymi ProcessorExpert, dostarczanymi przez firmę Freescale.