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The research of the application of the binary search algorithm of RFID system in the supermarket shopping information identification

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EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING 2019年第1期2019卷 1页

作者： Wu, Ling Liu, Sheng Zhao, Baoling Wu, Weinan Zhu, Baozhong Harbin Engn Univ Coll Automat Harbin 150001 Heilongjiang Peoples R China Harbin Inst Petr Harbin 150027 Heilongjiang Peoples R China Beijing Specialized Machinery Inst Beijing 100143 Peoples R China Harbin Far East Inst Technol Harbin 150025 Heilongjiang Peoples R China

The traditional bar code scanning in supermarkets is inefficient, which has been unable to meet the further development of a supermarket. To meet the needs of quick shopping in supermarkets, binary search algorithm has been proposed to prevent from anti-collision, which makes it faster to scan and identify the goods. On this basis, the goods which have not been checked out will be scanned again to obtain security. Besides, it plays an important role in the supermarket shopping system to achieve the functions of self-purchase and membership scheme. For the RFID supermarket shopping system, the test of the checkout efficiency, product recognition rate, and security were done. The result showed that the binary search algorithm had good accuracy in the RFID supermarket shopping system. The result also proved the rationality of the RFID supermarket shopping system, which can meet the daily needs of supermarkets. The method was applying the emerging technology into the traditional supermarket shopping system, which improved the profitability and management level of supermarkets.

关键词： RFID binary search algorithm Supermarket shopping system

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Improvements on radio-frequency identification (RFID) binary search algorithm 2

Improvements on radio-frequency identification (RFID) binary...

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2nd ETP/IITA Conference on Telecommunication and Information

作者： Zhang, Mingming Li, Xin Shen, Mingyan Liaoning Univ Technol Sch Elect & Informat Engn Jinzhou Peoples R China Liaoning Univ Technol Ctr Comp Jinzhou Peoples R China

ISBN: (纸本)9789881824202

The key problem of RFID anti-collision algorithm is how to quickly and accurately identify, all the labels in the area of the reader. In order to solve the problem of long delay of tag identification of the binary search algorithm, this paper presents an improved algorithm based on binary search algorithm. This algorithm modifies the parameter's length of the Request command, sets the dormant count, and imports the reverse search mechanism. The experimental results demonstrated that the proposed algorithm has reduced the amount of transmission data, resolved the problem of long delay of binary search algorithm and also improved the efficiency of label identification as well.

关键词： RFID anti-collision binary search algorithm

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binary search Based Flexible Power Point Tracking algorithm for Photovoltaic Systems

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IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS 2021年第7期68卷 5909-5920页

作者： Gomez-Merchan, Ruben Vazquez, Sergio Marquez, Abraham Dehghani Tafti, Hossein Leon, Jose, I Pou, Josep Rojas, Christian A. Kouro, Samir Franquelo, Leopoldo G. Univ Seville Elect Dept Seville Spain Univ New South Wales Sch Elect Engn & Telecommun Sydney NSW 2052 Australia Nanyang Technol Univ Sch Elect & Elect Engn Singapore 639798 Singapore Univ Tecn Federico Santa Maria Dept Elect Engn Valparaiso 2390123 Chile

Grid-connected photovoltaic (PV) systems can provide grid support features by implementing flexible power point tracking (FPPT) strategies. Conventionally, the FPPT algorithms are based on linear search algorithms, such as perturb and observe. These solutions offer good practical results but usually lead to oscillations around the steady-state operating point. The main contribution of this article is to propose a binary search based FPPT (BNS-FPPT) algorithm. BNS is a computer-science-based searching algorithm that performs a logarithmic search within a sorted data array until the target voltage value is found. Compared to sequential searching algorithms, the proposed BNS-FPPT algorithm conducts a nonlinear search and avoids waving around the final value, reducing the steady-state error. In this article, the basics of the BNS-FPPT are described in detail. In addition, experimental results are conducted on a laboratory setup to compare the BNS-FPPT performance against a state-of-the-art solution. The results show that compared to linear search-based FPPT algorithms, the proposed BNS-FPPT is able to provide the required grid support functionalities, and avoid waving around the final operation point.

关键词： Heuristic algorithms Steady-state Convergence Photovoltaic systems Oscillators Maximum power point trackers Active power control binary search algorithm flexible power point tracking (FPPT) photovoltaic (PV) system

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Stability analysis of delayed T-S fuzzy power system via a cubic function negative determination lemma

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NONLINEAR DYNAMICS 2025年第6期113卷 5439-5456页

作者： Luo, Renfu Ren, Jiaojiao Shi, Kaibo Chengdu Univ Sch Elect Informat & Elect Engn Chengdu 610106 Peoples R China

In this paper, a cubic function negative determination lemma is proposed for stability analysis of delay-dependent power systems with energy storage systems (ESSs). Firstly, a Takagi-Sugeno (T-S) fuzzy power system model with ESS is constructed by analyzing the nonlinear characteristics caused by the valve position restriction. Secondly, a fuzzy proportional-integral (P-I) controller is adopted to stabilize this fuzzy power system. Then, a negative determination lemma for cubic functions is developed to determine the allowable delay upper bound (ADUB) for the delayed fuzzy power system. Using the proposed lemma as well as the Lyapunov-Krasovskii functional (LKF), stability criteria are derived. In addition, a binary search algorithm is employed in order to reduce the computational burden when obtaining the ADUB. Finally, the effectiveness of the proposed methods is verified by two case studies.

关键词： Delay-dependent power system Cubic function Fuzzy P-I control Stability binary search algorithm

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Global Maximum Power Point Tracking for Photovoltaic Systems Using Hybrid Secant and binary search algorithms

Global Maximum Power Point Tracking for Photovoltaic Systems...

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14th Annual IEEE Energy Conversion Congress and Exposition (IEEE ECCE) / IEEE-Industry-Applications-Society (IEEE-IAS) Annual Meeting

作者： Kumaresan, Anusha Farivar, Glen G. Tafti, Hossein Dehghani Beniwal, Neha Gorla, Naga BrahmendraYadav Pou, Josep Nanyang Technol Univ Energy Res Inst NTU Interdisciplinary Grad Programme Singapore Singapore Nanyang Technol Univ Energy Res Inst NTU ERIN Singapore Singapore Univ Western Australia Dept Elect Elect & Comp Engn Perth WA Australia Nanyang Technol Univ Sch Elect & Elect Engn Singapore Singapore

ISBN: (数字)9781728193878

ISBN: (纸本)9781728193878

Global maximum power point tracking (GMPPT) algorithms are employed to extract the maximum available power from the photovoltaic (PV) arrays during partial shading conditions. However, the available GMPPT algorithms in the literature have disadvantages such as low convergence rate and requirement to scan for the local peaks. To overcome these drawbacks, this paper presents a fast and simple hybrid GMPPT algorithm, which combines the advantages of the binary search and the secant algorithms. The binary search algorithm is used for the global maximum power point (GMPP) reference generation and the secant algorithm is applied for tracking the generated power reference. The superlinear convergence rate of the secant algorithm and the logarithmic convergence rate of the binary search algorithm aid in fast convergence to the GMPP. The performance of the proposed hybrid GMPPT algorithm is validated through simulations in MATLAB-Simulink and also compared with a conventional GMPPT algorithm.

关键词： Active power control binary search algorithm maximum power point tracking photovoltaic (PV) systems secant algorithm

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A Novel Circuit for Clock Synchronization Using binary search Scheme and Phase Interpolation 16

A Novel Circuit for Clock Synchronization Using Binary Searc...

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IEEE 16th International Conference on Communication Technology (ICCT)

作者： Lu, Chong Duan, Zhi-kui Ding, Yi Li, Yu Tan, Hong-zhou Sun Yat Sen Univ SYSU CMU Shunde Int Joint Res Inst Shunde 528300 Peoples R China Sun Yat Sen Univ Sch Informat Sci & Technol Guangzhou 510006 Guangdong Peoples R China Hunan Univ Arts & Sci Sch Comp Sci & Technol Changde 415000 Peoples R China

ISBN: (纸本)9781467370059

In this paper, a novel circuit for clock synchronization utilizing an interleaved delay line for coarse tuning and a phase interpolation component for fine tuning is proposed. The interleaved delay line improves the precision to nearly half of conventional SMD and roughly aligns the output clock in two cycles. The rest phase error is compensated by the fine tuning component with binary search scheme and phase interpolation in five clock cycles and the error is suppressed under 3.1 ps. The circuit is designed and implemented using SMIC 130 nm 1P8M process with a 1.2 V voltage supply. The active area of proposed circuit is 260 mu mx140 mu m, and the total power consumption is 1.82mW@500MHz. The allowed operation frequency ranges from 200 MHz to 860 MHz, and the duty cycle varies in [32%, 77%]. It is compatible with the clock distribution networks and clock tree synthesis workflow aided by EDA software.

关键词： Clock synchronizer Clock distribution network Interleaved delay line binary search algorithm Phase interpolation

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binary search Based Flexible Power Control for Single-Stage Multiport Inverter-Fed Motor Drives 2

Binary Search Based Flexible Power Control for Single-Stage ...

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2nd IEEE International Power Electronics and Application Symposium, PEAS 2023

作者： Luo, Kehan Zhou, Dehong Zou, Jianxiao Zhou, Xue Shen, Zewei School of Automation Engineering University of Electronic Science and Technology of China Uestc Chengdu China Shenzhen Institute for Advanced Study University of Electronic Science and Technology of China Uestc Chengdu China

ISBN: (纸本)9798350313765

A single-stage multiport inverter (SSMPI)-fed motor drive, which connects dc-side energy sources to the ac motor without the application of any dc/dc power converters, offers a lightweight and highly-efficient multiple-source integration option for hybrid electric vehicles. However, the existing flexible power control strategies of SSMPI require adjusting more control parameters and suffering from low control precision. To tackle these issues, first, an equivalent two-level model-based space vector modulation strategy is adopted to accomplish the synthesis of the expected voltage vector, and power distribution between dc-port sources may also be realized simultaneously through regulating the two redundant zero vectors' duration times. Then, different from prior control schemes, the power distribution control problem is transformed into the problem of solving nonlinear equations and a binary search algorithm is utilized to solve them. Based on this, the two redundant zero vectors' duration times are calculated for realizing an anticipant power distribution. The proposed method features fewer control parameter adjustments and improves power control performance with simplified implementation. Finally, the expected output power control performance of the proposed approach are verified via several steady-state comparative experiments on a permanent-magnet synchronous motor (PMSM) in the laboratory corroborate. © 2023 IEEE.

关键词： binary search algorithm flexible power control Single-stage multiport inverter (SSMPI)-fed motor drives

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Energy efficiency optimisation of large-scale multiple-input-multiple-output system with transmit antenna selection

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IET COMMUNICATIONS 2017年第8期11卷 1224-1229页

作者： Hei, Yongqiang Liu, Yongli Li, Wentao Liu, Jiao Li, Xiaohui Xidian Univ State Key Lab ISN Xian Peoples R China

The rapid development of wireless communication comes at the cost of dramatically increasing energy consumption, which makes the optimisation of energy efficiency (EE) extremely important. In this study, the authors focus on maximising EE of large-scale multiple-input-multiple-output system by optimising the transmit power and the number of selected base station antennas. First, the EE optimisation problem, i.e. finding the optimal EE-based values of each parameter, when the other one is fixed, is investigated. Then, the optimisation problem jointly considering these two parameters to maximise EE is studied. Moreover, the EE optimisation problem is extended to multi-user (MU) system. Owing to the formulation of EE, the EE optimisation problem is reformulated as the fractional programming problem, and the Dinkelbach method is proposed to deal with this problem instead of the binary search algorithm (BSA) by switching the objective function to a weighted sum of rate and power. Simulation results show that the EE can be improved with the proposed Dinkelbach method, and it has a faster convergence speed than the BSA without any performance loss for both single-user system and MU system.

关键词： MIMO communication antenna arrays energy conservation mathematical programming energy efficiency optimisation large-scale multiple-input-multiple-output system transmit antenna selection wireless communication fractional programming problem Dinkelbach method binary search algorithm

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Improved RFID anti-collision algorithm

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AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS 2013年第3期67卷 256-262页

作者： Djeddou, Mustapha Khelladi, Rafik Benssalah, Mustapha Mil Polytech Sch Commun Syst Lab Algiers 16111 Algeria

In this paper, we propose an improved anti-collision technique based on the binary search algorithm. The improvement is achieved thanks to the manner of the requests' building. This latter reduces considerably the responding tag's numbers and therefore, decreases the probability of bit's collision. Further, the algorithm provides a noticeable advantage for the length of transmitted binary data compared against basic binary search and dynamic binary search algorithms. Besides, it provides same performance in terms of average request's number making the identification process faster, and the expose time of information is then reduced. (C) 2012 Elsevier GmbH. All rights reserved.

关键词： Radio frequency identification (RFID) Anti-collision algorithm binary search algorithm

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Wind Power Fluctuation Smoothing Controller Based on Risk Assessment of Grid Frequency Deviation in an Isolated System

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IEEE TRANSACTIONS ON SUSTAINABLE ENERGY 2013年第2期4卷 379-392页

作者： Lin, Jin Sun, Yuanzhang Song, Yonghua Gao, Wenzhong Sorensen, Poul Tsinghua Univ Dept Elect Engn State Key Lab Power Syst Beijing 100084 Peoples R China Wuhan Univ Sch Elect Engn Wuhan 412007 Peoples R China Univ Denver Dept Elect & Comp Engn Denver CO 80208 USA Tech Univ Denmark Riso DTU Wind Energy Div DK-4000 Roskilde Denmark

Wind power fluctuation raises the security concern of grid frequency deviation, especially for an isolated power system. Thus, better control methodology needs to be developed to smooth the fluctuation without excessive spillage. Based on an actual industrial power system, this paper proposes a smoothing controller to suppress the power fluctuation from doubly-fed induction generator (DFIG)-based wind farm. This controller consists of three main functionality components: risk assessment model, wind turbine rotor speed optimizer, and rotor speed upper limiter. In order to avoid unnecessary energy loss, this paper designs a risk assessment model of grid frequency deviation, which is capable of locally estimating the maximum grid frequency deviation risk of the next dispatch cycle. A wind turbine speed optimizer then uses the estimated frequency deviation risk to search for the optimal power curve with reduced output so that a trade-off between fluctuation smoothing and energy loss is achieved. Subsequently, the controller limits the maximum rotor speed to shift down the power curve of wind power plant based on the optimal wind turbine rotor speed. Therefore, the power fluctuation is smoothed along with the down-regulated power curve. A numerical case study demonstrates the effectiveness and economy of this smoothing controller for the studied isolated system.

关键词： binary search algorithm doubly-fed induction generator (DFIG) energy loss frequency deviation maximum speed limiter "Time-Frequency" assessment model power fluctuation

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