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This paper discusses the aspects of implementing a TDC with Vernier resolution in a microcontroller system. Results will show that the proposed solution have a potential time resolution corresponding exactly to the theoretically expected resolution (equal to the time difference in the Vernier clocks' period), but also that there is an inherent sample-to-sample uncertainty due to the fact that microcontrollers...
Cyber-physical energy systems (CPES) integrate information sensing and communication networks to the physical entities for energy efficiency applications in smart grid. Nonintrusive load monitoring (NILM) is a technique to identify the operating states of electric appliances and support demand response with minimal consumer inconvenience. The CPES realtime electrical load information sensing and communication...
In this paper, we introduce a system that links an individual's heart rate and muscle reaction time through performance boxing. In order to do so, the system utilizes force sensors, LED lights and a simple ECG belt. The system aims at making the individual exercise at a specific heart rate - the heart rate that results in an optimal performance as well as an effective work out. Though there have been...
The on-chip interconnection system known as advanced microcontroller bus architecture (AMBA) is a well-established open specification for the proper management of functional blocks comprising system-on-chips (SOCs). In the subject paper, the design and implementation details of AMBA high-performance bus (AHB) master and slave with memory controller (MC) interface are discussed. A bridge between AHB...
For reducing the inconsistency of sensors' characteristics in laboratory and working conditions, calibration of an accelerometer with multicomponent inputs is introduced. After a review of current equipments which are capable of producing combined accelerations, we introduced a different apparatus which can offer simultaneous harmonic and constant linear accelerations. It consists of a vibration exciter...
The minimum achievable uncertainty of the Doppler frequency estimation of any unbiased estimator is given by the Cramér-Rao lower bound (CRLB). In this paper, we consider the effect of the particle trajectory via the measurement volume on the CRLB by employing the 2D model of the Gaussian envelope of the Doppler Burst Signal (DBS). The simulation results confirmed the theoretical predictions in terms...
Phase information is employed to enhance evaluating defects in the metals by eddy current testing using the conventional probes. But for an EC-GMR sensor, the output phase is not used. In this paper, GMR-based eddy current defect detection is studied, in which the phase of the GMR sensor output is taken into account. Based on Biot-Savart law, amplitude and phase for the EC-GMR sensor's output are...
This paper proposes a data processing flow that reduces the power consumption of a bridge scour monitoring system (BSMS) that was designed to estimate the current bridge scour status in real time. The BSMS contains 20 sets of sensing nodes, which are placed at each bridge pier to monitor the bridge scour status. An IP camera placed on the bridge monitors the bridge structure and the water level. These...
The goal of this paper is to describe the potential of a visual interface applied to a Nikon 6B/6D autocollimator in order to replace human operator within a “laboratory grade” measurement. The optical interface implemented consists of a Basler HD camera attached to the autocollimator's eyepiece, camera positioning devices, and a proprietary digital image processing package, built around Matlab environment...
Ultrasound cross-correlation flowmeters are utilized to measure the flow velocity of liquids or gases in pipes. The basic concept is to measure the time interval needed by the flow for travelling a given distance between two measurement channels, each consisting of a pair of ultrasound transducers. At each channel, ultrasound waves are emitted in a direction perpendicularly to the flow, and phase...
This paper investigates the mains signal behavior and non-idealities impact on zero crossing (ZC) signal already used for synchronization purpose in powerline communication (PLC) systems. A design of analog and digital stage for an experimental measurement platform is proposed to evaluate mains ZC periodicity with real conditions. Measurements were performed in real different environment: in lab,...
Hydro power plant electronic speed governor are engineering customized designs, as high accurate and reliable as possible. The DC-DC power converter used as multiple voltage power supply, must have at least the same reliability of the governor itself, to avoid frequently failures and turbine emergency shutdowns. Project design and final user right equipment maintenance, play a main role in reliability...
This work presents a study of a new technique for non-intrusive measurement of liquid-liquid flow. The evaluated film thickness sensor has 64 × 16 measuring points and a measuring area of 128 × 32 mm. This sensor measures the electrical conductance and, through a calibration procedure, converts those signals in water film thickness. The experimental work was carried out in the Swiss Federal Institute...
This work introduces a new multi-sensor measurement framework for condition monitoring of brushless DC motors (BLDCM) with bearings. An experimental platform for equipment health monitoring is used for producing different faults on BLDCMs and log the measurement data. This work is oriented to maximize the life-cycle of industrial machinery and prevent catastrophic failures and their environmental...
The aim of this paper is to evaluate children's bone age based on the radiogram of epiphyseal/metaphyseal region of interests (EMROIs). At first, we take the 9 EMROIs from ring finger, middle finger and index finger into our analysis and then extract the 13 geometrical features for each of them. Next, we utilized the KNN classification under the binary decision tree structure for determining the bone...
Melanoma is a type of malignant pigmented skin lesion, which currently is among the most dangerous existing cancers. Segmentation is an important step in computer-aided pre-screening systems for pigmented skin lesions, because a good definition of the lesion area and its rim is very important for discriminating between benign and malignant cases. In this paper, we propose to segment pigmented skin...
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