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FPGA Implementation of Contactless Position sensor using FSR (Force Sensing Resistor)

FPGA Implementation of Contactless Position Sensor using FSR...

引用

2nd ieee International Conference on Communications and signal processing (ICCSP)

作者： Praveen, Kalkundri Guhilot, Hansraj KLE Soc Coll Engn & Technol Udyambag 590008 Belgaum India

ISBN: (纸本)9781467348669;9781467348652

This paper presents a contactless reprogrammable position measurement system designed using the HDL(hardware description language) and realized in hardware using the field programmable array (FPGA). The proposed system is able to measure the contactless position at various locations with each of them to its accuracy. It is used to measure pressure and motioning purposes using magnetic principles. In addition, the proposed system incorporates feature that measure position at contactless in real time. This system effectively detects the linear displacement in terms or resistive variations using Force pressure sensors (FSR). The proposed system uses a reprogrammable controller (FPGA), as it is possible to customize the design to various industry applications.

关键词： FPGA pressure sensors FSR Piezoresistive

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A fully digital approach in sensing and processing photoplethysmographic signal

A fully digital approach in sensing and processing photoplet...

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2nd International Conference on Biomedical Engineering and Informatics (BMEI)

作者： Stojanovic, Radovan Asanin, Bogdan Karadaglic, Dejan Univ Montenegro Fac Elect Engn Podgorica Montenegro Univ Montenegro Sch Med Podgorica Montenegro Univ Manchester Dept Elect & Elect Engn Manchester Lancs England

ISBN: (纸本)9781424441334

A fully digital sensor-actuator has been developed for photoplethysmographic (PPG) measurements. Instead of classical sensor it uses standard light emitting diodes (LEDs) for both light emitting and detecting. Time-duration based conversion protocol is implemented by a field programmable gate array (FPGA) avoiding the need for analog amplifiers and precision analogue to digital converters (ADCs). The basic sensing configuration, presented here, consists of a pair of LEDs directly connected to two FPGA's I/O pins and is capable of detecting the PPG signal from a finger or a toe. The better spectral sensitivity, increased and adjustable resolution, reduced noise, lower cost and dimensions are confirmed advantages. In this paper we introduce a sensing principle in conjunction with pulse-based measurement technique, signal filtering and data communication implemented in a single FPGA chip. The approach in general, as well as the prototype in particular, where evaluated through both qualitative and quantitative experiments.

关键词： PPG measurement microcontroller sensor

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The Video Capture and processing Research on Smart Car Road Information Based on OV7620 Camera

The Video Capture and Processing Research on Smart Car Road ...

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2nd International Asia Conference on Informatics in Control, Automation and Robotics (CAR)

作者： Jiang, Zhijun Wang, Mingfa Gong, Wei Nanchang Univ Informat Engn Coll Nanchang Jiangxi Peoples R China

ISBN: (纸本)9781424451944

In this paper, the road information collection systems and processing algorithms of video signal was researched based on vision sensor, the processor of Smart car used MC9S12XS128, the hardware of Sampling system using OV7620 digital camera;The key of software part is the turn of double-array storage and processing technology, which made the Acquisition system has higher efficiency, more in line with the requirements of real-time. Experiments have proved that the algorithm has good real-time performance, reliability and robustness.

关键词： OV7620 Video Acquisition Image processing Visual Navigation Edge Detection

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Semi-blind subspace techniques for digital communication systems 2

Semi-blind subspace techniques for digital communication sys...

引用

2nd ieee workshop on signal processing Advances in Wireless Communications, SPAWC 1999

作者： Buchoux, Vincent Moulines, Eric Cappé, Olivier Gorokhov, Alexei ENST- TSI CNRS URA 820 46 rue Barrault Paris Cedex 1375634 France

ISBN: (纸本)0780355997

This paper is devoted to the analysis of a "semi-blind" estimation framework in which the standard input-output (training sequence based) estimation is enhanced by using the statistical structure of the information sequence. More specifically, we consider the case of a general TDMA frame-based receiver equipped with multiple sensors, and restrict our attention to second-order based subspace methods which are suitable for most standard communication applications due to their moderate computational cost. The channel estimator is obtained as a regularized least-squares solution where the blind subspace criterion plays the role of the regularization constraint. The main contribution of the paper consists in showing by asymptotic analysis how to optimally tune the balance between the blind criterion and the least-squares fit depending on the design parameters of the system. Simulations show that the proposed solutions are very effective and significantly improve the efficiency of the equalization. © 1999 ieee.

关键词： array processing

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A transputer-based neural network to determine object positions from tri-aural ultrasonic sensor data 2

A transputer-based neural network to determine object positi...

引用

2nd Euromicro workshop on Parallel and Distributed processing, PDP 1994

作者： Chen, J. Peremans, H. Van Campenhout, J.M. Universiteit Gent Department ELIS St.-Pietersnieuwstraat 41 GentB-9000 Belgium

ISBN: (纸本)0818653701

For mobile robot navigation purposes, we use an object position measurement system. The measurement system is composed of two parts, a signal acquislion part and the signal procssing pari. The first part consists of three ultrasonic sensors, one transmitting and three receiving. In the second part, the topic of this paper, we use. a transputer based neural network to process the acoustical signals from the receivers. We show how to combine ultrasonic sensor data with an artificial neural network to estimate object positions (distance r and bearing 0). Acoustic signals from the three sensors are preprocessed and then passed through the neural network. The object positions are determined by the neural network. Experimental results on object position measurement show that a neural network of the multilayer perceptron type, can be trained to do this task, and that the. resulting system is reasonably sensitive and accurate. © 1994 ieee.

关键词： Transputers

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A method of gas source orientation recognition for bioenergy detection

A method of gas source orientation recognition for bioenergy...

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2nd International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2008

作者： Xia, Donghai Wang, Shu Zhu, Ming Tang, Hui Department of Electronics and Information Huazhong University of Science and Technology Wuhan China

ISBN: (纸本)9781424417483

For realizing the behavior rules of the microorganisms producing gases and detecting the gas sources for applying bioenergy, a method for the orientation recognition of the gas source and its algorithm is presented in the paper. In the method, the dual-line gas sensor array is applied to sample the signals of the gas concentration in real time, and the time delay estimation, an approach of the signal processing, is used to establish an algorithm for performing the orientation recognition of the gas source. Lastly, the simulations of the method are drawn, which indicates that the method has fine veracity and robustness for recognizing the orientation of the gas source. © 2008 ieee.

关键词： signal processing

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A formalism for the analysis and design of time and path diversity schemes in wireless sensor networks

A formalism for the analysis and design of time and path div...

引用

2nd International workshop on Information processing in sensor Networks

作者： Haenggi, M Univ Notre Dame Notre Dame IN 46556 USA

ISBN: (纸本)3540021116

For Rayleigh fading channels, there exists an interesting similarity between resistive circuits and time and path diversity mechanisms in multihop wireless sensor networks. A resistor-like circuit element, the erristor, representing the normalized noise-to-signal ratio, is introduced. Given an end-to-end packet delivery probability (as a QoS requirement), the nonlinear mapping from link reception probabilities to erristor values greatly simplifies the problems of power allocation and the selection of time and path diversity schemes. Thanks to its simplicity, the formalism that is developed also provides valuable insight into the benefits of diversity mechanisms, which is illustrated by a number of examples.

关键词： Wireless sensor networks

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array processing for target DOA, localization, and classification based on AML and SVM algorithms in sensor networks

Array processing for target DOA, localization, and classific...

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2nd International workshop on Information processing in sensor Networks

作者： Yip, L Comanor, K Chen, JC Hudson, RE Yao, K Vandenberghe, L Univ Calif Los Angeles Dept Elect Engn Los Angeles CA 90095 USA

ISBN: (纸本)3540021116

We propose to use the Approximate Maximum-Likelihood (AML) method to estimate the direction-of-arrival (DOA) of multiple targets from various spatially distributed sub-arrays, with each sub-array having multiple acoustical/seismic sensors. Localization of the targets can with possibly some ambiguity be obtained from the cross bearings of the sub-arrays. Spectra from the AML-DOA estimation of the target can be used for classification as well as possibly to resolve the ambiguity in the localization process. We use the Support Vector Machine (SVM) supervised learning method to perform the target classification based on the estimated target spectra. The SVM method extends in a robust manner to the nonseparable data case. In the learning phase, classifier hyperplanes are generated off-line via a primal-dual interior point method using the training data of each target spectra obtained from a single acoustical/seismic sensor. In the application phase, the classification process can be performed in real-time involving only a simple inner product of the classifier hyperplane with the AML-DOA estimated target spectra vector. Analysis based on Cramer-Rao bound (CRB) and simulated and measured data is used to illustrate the effectiveness of AML and SVM algorithms for wideband acoustical/seismic target DOA, localization, and classification.

关键词： Direction of arrival

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Enhanced 2D-DOA Estimation for Monostatic EMVS-MIMO Radar via Phase Compensation 2

Enhanced 2D-DOA Estimation for Monostatic EMVS-MIMO Radar vi...

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2nd ieee International Conference on signal, Information and Data processing, ICSIDP 2024

作者： Zhang, Zhe Shi, Shuyun Wen, Fangqing China Three Gorges University College of Computer and Information Technology Yichang China National University of Defense Technology School of College of Electronic Countermeasure Hefei China

ISBN: (纸本)9798331515669

Multiple-input multiple-output (MIMO) sparse electromagnetic vector sensor (EMVS) arrays offer enhanced flexibility and resolution in signal processing. This study presents an improved PARAFAC-based algorithm for angle estimation in monostatic MIMO radar with arbitrary EMVS arrays. By leveraging the array data multidimensional structure and using PARAFAC decomposition for factor matrix estimation, followed by vector cross product and phase compensation techniques, the proposed method achieves super-resolution while maintaining low computational complexity. Numerical simulations confirm the superiority of the proposed method over existing algorithms. © 2024 ieee.

关键词： Multistatic radars

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Almost sure identifiability of' multidimensional harmonic retrieval

Almost sure identifiability of' multidimensional harmonic re...

引用

ieee International Conference on Acoustics, Speech, and signal processing

作者： Jiang, T Sidiropoulos, nd ten Berge, JMF Univ Minnesota Dept Elect & Comp Engn Minneapolis MN 55455 USA

ISBN: (纸本)0780370414

Two-dimensional (2-D) and more generally multi-dimensional harmonic retrieval is of interest in a variety of applications. The associated identifiability problem is key in understanding the fundamental limitations of parametric high-resolution methods. In the 2-D case, existing identifiability results indicate that, assuming sampling at Nyquist or above, the number of resolvable exponentials is proportional to I + J, where I is the number of (equispaced) samples along one dimension, and J likewise for the other dimension. We prove in this paper that the number of resolvable exponentials is roughly IJ/4, almost surely. This is not far from the equations-versus-unknowns bound of IJ/3. We then generalize the result to the N-D case for any N > 2, showing that, under quite general conditions, the number of resolvable exponentials is proportional to total sample size, hence grows exponentially with the number of dimensions.

关键词： Harmonic analysis

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