Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"Frequency counter"”.
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A temperature-compensated RC oscillator using temperature sensor
… applications, including communication, timing, frequency synthesis, and synchronization. This thesis introduces a practice of utilizing a temperature sensor to compensate for an RC oscillator based on FLL (frequency-locked loop), on the same die of the temperature sensor, with the assistance of …
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Development and implementation of a low-cost data acquisition system using single-board computers to measure volumetric water content
… and fabricated a Hardware Attached on Top frequency counter add-on board for the Raspberry Pi based on the reciprocal frequency counting method, and found that this accurately and precisely measures frequency signals from water content reflectometers. We then built a dormant …
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Engineering external heart assist device
… fashion. The system also comprises a pulse frequency counter and a safety shut- off control circuits. A portable pressure-vacuum supply system and a pressure pulsating mechanism comprise the work done in completing the mechanical task. Of the two pressure pulsating mechanisms built and …
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Novel approaches to power scaling of single-frequency photonic crystal fiber amplifiers
… and theoretical studies of high power, single-frequency, ytterbium-doped photonic crystal fiber amplifiers. The objective of this effort is to identify issues which limit power scaling and develop novel techniques to overcome these limitations. Historically, stimulated Brillouin scattering …
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Análise da atividade e gasto fisiológico dos catadores de resíduos sólidos: a percepção da terapia ocupacional
… work weight, the participants used the Polar FT7 frequency counter, which generated, in graphic form, the performance of the collector in both methods. According to the values presented, was concluded that three of the four participants had a higher physiological weariness by using the manual car …
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Modeling and control of quartz crystal operated in liquid for bio-sensing application
… which causes a vibration at some resonant frequency. The QCM then measures the frequency of oscillation in the crystal. When used as a biosensor, the QCM can detect changes in frequency of the crystal due to changes in mass on the surface of the crystal. In the present work, all related …
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Distributed feedback fibre laser strain and temperature sensors
… of one polarisation mode and the RF beat frequency between the two polarisation modes. The system complexity is reduced to a minimum in the dual longitudinal mode polarimetric DFB fibre laser sensor which utilises the RF beat frequencies between two longitudinal modes and their associated …
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Biological Agent Sensing Integrated Circuit (BASIC): A New Complementary Metal-oxide-semiconductor (CMOS) Magnetic Biosensor System
Fast and accurate diagnosis is always in demand by modern medical professionals and in the area of national defense. At present, limitations of testing speed, sample conditions, and levels of precision exist under current technologies, which are usually slow and involve testing the specimen under …