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The paper presents a low-power system for visual detection of large-objects developed in the frame of TUL-COEMPA project. Its main aim is to detect possibly massive-vehicles passing the bridge located in Szczercowska Wies (Poland). This facility uses the innovative strengthening system, which will be assessed using data from wide range of sensors deployed. The presented technology is part of wider...
In this paper an optical scheme and the operation principle of strain sensor based on multimode polymer optical fiber is investigated. The possibility of measuring of the relative strain by processing of speckle patterns at the exit face of multimode fiber is studied theoretically and experimentally. The algorithm of correlation processing of speckle pattern is developed too.
This paper presents design and testing process of the pressure and temperature measurement system for aerodynamic tunnel, named SIESTA (System of Intelligent Sensors for Experimental Avionic Applications), announced in [1]. This system consists of three main parts: the hardware, the embedded software for microcontroller and the measurement program built in LabVIEW environment.
In this paper authors present an improved design methodology consisting of methods and tools that are used to partially automate a task of smart sensor system design. By selecting a number of constraints and parameters of the whole sensor system (not only parameters of selected components), the application is able to generate set of results (each result is a set of components), which meet the pre-defined...
The paper presents a high level model of a Lab-On-Chip to detect micro-pollutants in drinking water, using an analog hardware description language (VHDL-AMS). The Lab-On-Chip is composed by a micro-fluidic system, a biological reaction and a detection system. Simulation results of Lab-On-Chip model are validated by comparison to experiment and numerical studies. With this model it is possible to evaluate...
An approach to design high-voltage trapezoidal waveform generators with edge-rounding ability is described. The paper presents circuits able to produce edge-rounded trapezoidal waveforms, with numerous means of waveform parameter adjustments. What is important, signal paths in the circuits are very short, as auxiliary circuitry is placed mainly outside signal paths. Circuit solutions as well as simulational...
For many years hybrid pixel detectors working in the single photon counting mode have been used not only in high energy physics experiments but also for X-ray imaging applications. In these detectors each pixel has its independent electronic readout channel for photon by photon signal processing, what provides better image quality and possibility of counting photons only within a given energy window...
Over the last decades CMOS technologies have evolved to a point where integrated inductors are becoming very popular. This paper presents the implementation of the inductor Pi-model in QUCS. The model lumped element values are evaluated through analytical expressions depending on the technological and the inductor geometrical parameters. The integration of the proposed Pi-model block with the EKV-MOSFET...
Introducing non-volatility into CMOS circuits is a promising solution to overcome the standby power dissipation due to leakage, which has become a major challenge of today's VLSI. Stateful logic inherently realizes non-volatile logic-in-memory circuits with zero-standby power and opens the door for a shift away from the Von Neumann architecture. To ensure a correct logic behavior in all input patterns,...
In the last few years, the Tunnel-FET has become one of the promising devices to be the successor of the MOSFET due to its CMOS compatibility and steep subthreshold slopes (S) below 60 mV/dec. The rapid forthcoming of research regarding the Tunnel-FET leads to a wide range of studied device geometries, different hetero-structure combinations and applied technological methods. All with the aim of improving...
What is presented in this article is a general purpose fuzzy controller. In comparison with other structures, a novel approach is used in the fuzzifier section that brings about accuracy and speed enhancement. A new Min-Мах circuit with the capability of generating minimum, maximum and both of mentioned results (utilizing a decoder) is exploited in inference engine. The defuzzifier is designed in...
A method for fabrication of junctionless SOI MOS devices for sensor applications is presented in the paper. Two groups of devices, namely FinFET-type devices, and wide MOSFETs have been designed and manufactured in a single process sequence on the same wafer. Electrical measurements of the MOSFETs as well characterization work have been carried out. The characterization work is based on a proposed...
This article is attributed to a novel 4-2 compressor based on a new structure with a special feature of having no glitch at the output waveform. Speed enhancement is achieved through the quick production of Cout and optimum tuning of the width of utilizing transistors. The delay of the proposed structure is about 130ps in which the authenticity of our claim is proved by using the results extracted...
This paper presents a self-calibration technique for a fast-switching DLL-based frequency synthesizer targeting frequency-hopped ultra-wideband (UWB) communication. The proposed architecture employs the concept of track-and-hold (T/H) technique to sample the lock control voltages regarding each channel and store them across a corresponding capacitor during a start-up phase. During the normal operation...
This paper describes a reliability evaluation method of a sensor in multi-sensor control systems, where communication between modules is based on a binary information. At the beginning, main objectives of the TULCOEMPA are briefly presented. One of the main tasks of this project is the Truck Recognition System that uses various types of sensors, which are working for the same purpose — recognition...
Fluorimetric detection is widely utilized in analytical applications including pathogen detection, clinical diagnosis and DNA analysis. This method combined with lab-on-a-chip (LOC) technique provides new class of miniature and ultrasensitive bioanalytical tools and therefore new solutions are being widely developed. We present new measurement set-up for lab-on-a-chip fluorimetric detection which...
A signed variable step size least mean squares (SVSS-LMS) technique is used to boost the convergence rate of digital background calibration for pipelined analog-to-digital converters (ADC). The technique is used to compensate for most known errors, including nonlinear OpAmp gain imperfections, capacitor mismatch and comparator offset. A 12-bit ADC Simulink model is established to verify the technique...
The main goal of this work is to develop an algorithm to recognize the colour of a car. The methodology has been divided into three stages: car segmentation, region of interest (ROI) detection and colour recognition procedure. Proposed methodology is based on mathematical morphology operations and fuzzy systems. The computer application with graphical user interface has been implemented in MATLAB...
Fractional-order calculus presents a novel modeling approach for systems with extraordinary dynamical properties by introducing the notions of derivatives and integrals of noninteger order. In system theory this gives rise to extensions to linear, time invariant systems to enhance the description of complex phenomena involving memory or hereditary properties of systems. Standard industrial controllers,...
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