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Flexible capacitors were made using stainless steel yarns as yarn electrodes on textile substrate. The electrolyte material used was a dispersion of polyethylene dioxythiophene (PEDOT) : polystyrene sulphonate (PSS). After charging the capacitor for sufficient time, a sharp voltage drop was observed initially for a few seconds, then the voltage discharge slows down. It was not easy to establish the...
This paper analyzes some advantages of Silicon-on-Insulator (SOI) based photodetectors for bioluminescence imaging. It shows that SOI based sensors not only solve the bulk carriers problem, it can also act as a very selective spectral filter by acting as a resonant cavity, which is useful in application with a very narrow spectrum of interest, such as bioluminescence imaging. Then, the authors discuss...
This paper proposes the evolutionary technique of the stimulus signal optimization for the analog electronic circuit testing purpose. The obtained signal is coded with Sigma-Delta modulation usage that allows to generate it easily by simple microcontrollers without the necessity of expensive D/A peripherals applying. The signal with the controlled impulses density may be obtained on the external output...
Low light detection, down to the single photon, has been possible so far relying on photo-multiplier tubes (PMT). PMT are certainly a reliable, solid rock technology with decades of improvements and refinements. Their architecture is certainly beautiful but irreducibly complex. Biasing electronics can be sophisticated but the operational voltage necessarily exceeds 1000 V. Operation in magnetic fields...
The paper presents the idea behind the implementation of the BioSiP system designed for monitoring biomedical parameters and the patient's behaviour, based on the architecture of a measurement module system located on the subject's body. The system could be developed owing to the market launch of new generations of electronic devices combining high functionality, small size and low power consumption...
New generations of electronic devices have become more sensitive to the effects of the natural radiation coming from the surrounding environment. These radiation sources are cosmic rays and radioactive impurities, able to corrupt the content of memory cells or to induce transient pulses in combinational logic. The growing sensitivity is due to the lower charge needed to define the logic levels in...
This paper presents the study on the automatic computer-aided balance assessment system. The approach employs ambient assisted living architecture based on inertial sensors. The assessment relies on selected activities from the Berg Balance Scale test by means of the system supplied by a set of features extracted from the accelerometric signals. The feature space dimensionality reduction stage selects...
A system-on-chip allowing dynamic measurement and processing of the most important human physiological parameters has been presented. The BioChip consists of analog front-ends, analog to digital converters and a two core 32-bit microcontroller Azurite. The two core architecture allows to control the signals' acquisition, data processing and communication with the peripherals simultaneously. The microcontroller...
The goal of this research work is to explore technology and memory architectures to reduce power consumption with low area and high speed of operation. We proposed two different architectures of SRAM memory. First is focused on reducing dynamic power consumption and area, with high speed of operation. Second architecture is focused on reducing leakage power with good speed and optimized area.
In this paper, a wide-band fully differential linear low noise amplifier (LNA) in a standard 130nm CMOS process is presented. The LNA utilizes Active Post Distortion (APD) as a voltage combiner that prepares a linear transconductance for enabling harmonic cancellation, which can also mitigate the impedance matching device noise. The impedance matching device is connected to the output transistors...
A novel high speed booth encoder is designed by utilizing a new truth table. The important advantage of this structure is its low delay with respect to the previously presented papers. Moreover, generating partial products and putting the partial products array in order are done at the same time. Simulation results applied to the Hspice software in TSMC 0.18μm technology proves that the total delay...
This paper devotes to a new 7-2 compressor designed according to a new architecture with a pure Glitchless output. A considerable increase in the speed of the operation is achieved by utilizing a new truth table, fast production of signals Cout1 and Cout2, optimum tuning of the width of the utilizing transistors, and eliminating the parasitic capacitances through merging the drain of transistors....
In this paper a new voltage reference circuit concept is introduced. The presented voltage reference circuit is especially useful for low power applications. The reference circuit has two modes: the high accuracy and the low power mode. During the high accuracy mode the energy consumption is much higher than during the low power mode where accuracy is secondary. The fields of application are use cases...
The main goal of this work is a presentation of a new algorithm dedicated to cysts detection in Optical Coherence Tomography (OCT) images. Considered in this paper OCT scans concern the eyeball examination in ophthalmology. The proposed approach utilizes different image processing techniques including non-linear complex diffusion and mathematical morphology operations and algorithms, in particular...
Nowadays, in the age of technological development in various areas of life there is a growing interest in non-invasive techniques useful in medical examination. Angiology also called vascular medicine is a medical specialty with interest of diseases and disabilities of the human circulatory system. This domain uses different types of imaging. The acquired images are used for research, diagnostic,...
The Medical Cyber-Physical System (MCPS) for telemonitoring of pregnant women at home is introduced in the paper. The system comprises the Body Area Network (BAN) of advanced sensors that are interconnected on a body of a pregnant woman and the Personal Area Network (PAN) which is responsible for embedded processing of physical signals, smart alerts, and human-machine-interface. A reliable transmission...
This paper presents a study aimed to assess applicability of artificial neural networks (ANNs) in human activity recognition from simple features derived from accelerometric signals. Secondary goal was to select the most descriptive signal features and sensor locations to be used as inputs to ANNs. Five triaxial accelerometers were attached to human body in the following places: one at back, two at...
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