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检索条件"主题词=Anti-collision algorithm"

共 99 条记录，以下是71-80 订阅

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CRC-16-based collision resolution in EPCglobal Class1 Generation2 RFID systems

CRC-16-based collision resolution in EPCglobal Class1 Genera...

引用

International Conference on Wireless Information Networks and Systems

作者： Eom, Jun-Bong Lee, Tae-Jin Sungkyunkwan Univ Sch Informat & Commun Engn Suwon 440746 South Korea

ISBN: (纸本)9789898111623

The 900 MHz UHF passive RFID systems have drawn attraction because they have long access distance and rapid identification speed. One of the most representative international standards is EPCglobal Class1 Generation2 (EPCglobal Gen2). RN16 which is used in the EPCglobal Gen2 standard assists a reader to detect tag collision rapidly, but it may be removed because it does not have information of products. In this paper, we propose an algorithm to replace RN16 with CRC-16 to reduce the identification time. We show that CRC-16 has similar characteristics of RN16 and our proposed scheme reduces the number of bits required for one tag identification.

关键词： anti-collision algorithm CRC-16 EPCglobal Class1 Generation2 protocol RFID RN16

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Improved CT algorithm Based on Bit Transform 14

Improved CT Algorithm Based on Bit Transform

引用

14th IEEE International Conference on Advanced Infocomm Technology (ICAIT)

作者： Hu, Haidong Wang, Hao Changchun Univ Sci & Technol Sch Elect & Informat Engn Changchun Jilin Peoples R China

ISBN: (数字)9781665471565

ISBN: (纸本)9781665471565

The RFID system is the core technology of the future Internet of Things system and Industry 4.0, and the RFID anti-collision algorithm is the basis for realizing the communication between the tag and the reader. Aiming at the problems of high computational complexity, low recognition efficiency and complex recognition process in existing RFID anti-collision algorithms in existing international standards, based on the query tree algorithm, combined with the extended bit transformation method, a relatively simple method is proposed. We propose a relatively simple anti-collision algorithm for RFID: Improved collision Tree based on Bit Transformation algorithm (ICTBTA). The simulation results show that the system efficiency of the tree algorithm proposed in this paper can be stabilized at more than 80%, and the efficiency of the currently used CT algorithm can be improved by more than 50%. Therefore, ICTBTA can be applied to common RFID passive tag identification systems.

关键词： radio frequency identification tags identification anti-collision algorithm collision tree algorithm bit transform

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Design of the Electronic Tags in a Container RFID System

Design of the Electronic Tags in a Container RFID System

引用

9th International Symposium on Distributed Computing and Applications to Business, Engineering and Science (DCABES 2010)

作者： Guo Xing Wang Guoxian Xiao Hanbin Wuhan Univ Technol Sch Logist Engn Wuhan 430070 Hubei Province Peoples R China

ISBN: (纸本)9780769541105

This paper presents a case study to apply the RFID (Radio Frequency Identification) technology to dynamically track miscellaneous logistics information of the shipping containers to improve the container transportation management and digitalization level. The system architecture and configuration of the RFID system are illustrated and the requirements of the container RFID system are characterized. The hardware circuit of the electronic tags in an active RFID system is designed. The tags designed are of small volume and low power consumption with an identification sensitive distance up to 20m. The anti-collision mechanism for the electronic tags is discussed and an adaptive anti-collision algorithm based on the slotted ALOHA algorithm is proposed. The proposed algorithm proves that it is effective to improve the message channel utilization rate and the tag identification rate.

关键词： Radio Frequency Identification electronic tag anti-collision algorithm time slot

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Design of 433MHz Low Power anti-collision RFID System

Design of 433MHz Low Power Anti-Collision RFID System

引用

IEEE International Conference on Automation and Logistics

作者： Guo, Yue Hou, Ligang Geng, Shuqin Wu, Wuchen Beijing Univ Technol VLSI & Syst Lab Beijing 100022 Peoples R China

ISBN: (纸本)9781424425020

A design method of low power anti-collision RFID system is presented in this paper. The system power consumption is effectively reduced by circuit design and work mode selecting. An improved anti-collision algorithm is used in the system, reducing both the tag collision probability and the power consumption. The design method has been used in a 433MHz RFID system, enhancing the identification efficiency and reducing the system power consumption successfully.

关键词： RFID low power anti-collision algorithm

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Parametric Heuristic Schemes for Performance Improvement in Frame Slotted Aloha based RFID Systems

Parametric Heuristic Schemes for Performance Improvement in ...

引用

International Conference on ICT for Smart-Society (ICISS)

作者： Dhakal, Sunil Shin, Seokjoo Chosun Univ Dept Comp Engn Kwangju South Korea

ISBN: (纸本)9781479901456

The performance of the Dynamic Frame Slotted Aloha (DFSA) based RFID anti-collision algorithm depends on the dynamically controlled frame size with the contending tags. Many literatures exploit the tag estimation method and attempt to enhance the system performance by regulating the frame size equal to the estimated tags. Unless the contending tag population is exactly estimated and the frame size is optimally adjusted the system performance cannot be maximized. However, it is always a difficult task to precisely estimate the contending tags in RFID systems. Thus to maximize the system performance, we used a parametric heuristic approach and proposed two simple schemes, namely ID-FSA (Improvised Dynamic-FSA) and ERP-FSA (Exponential Random Partitioning-FSA) algorithms. Unlike other algorithms, ID-FSA algorithm adjusts the optimal frame length for estimated tag population and ERP-FSA adjusts the contending tag population in such a way that the applied static frame size becomes optimal. The performance of our parametric heuristic schemes reveals that there are some potential benefits that can be achieved by adjusting the tags equivalent to the optimal frame length, moreover, regulating the optimal frame length for estimated tags can maximize the system performance.

关键词： RFID system anti-collision algorithm Frame Slotted Aloha Optimal Frame Length Tag Estimation

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Design and Research of Distribution Equipment and Asset Management System Based on Internet of Things Technology 2

Design and Research of Distribution Equipment and Asset Mana...

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2nd IEEE Conference on Energy Internet and Energy System Integration (EI2)

作者： Qian, Yulin Zhang, Kexin Cao, Lianlian Zhang, Zhihao NARI Grp Co Nanjing Jiangsu Peoples R China

ISBN: (纸本)9781538685495

Distribution equipment and physical assets of a wide range, a large part of the distribution network equipment in the long-term operation in the outdoor environment, bear the role of mechanical load and power load at the same time, but also bear the natural external forces. The above factors will promote the aging of the components, corrosion and oxidation, if not timely detection and elimination of equipment components of the security risks, will affect or even endanger the safe operation of power systems. With the rapid development of wireless communication technology in recent years, RFID is more and more widely used as a radio frequency identification technology. The combination of RFID and power system asset management can greatly reduce the manual operation and improve the efficiency of material and equipment management. This paper designs an asset management system of distribution network equipment based on RFID technology, analyzes the system information security technology, adopts the lightweight security authentication protocol of two-way message mutual authentication to enhance the security performance, and finally gives an improved anti-collision algorithm for binary search to enhance the system's multi-tag recognition efficiency and accuracy.

关键词： IoT rfid asset management smart grid security authen-tication protocol anti-collision algorithm

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Cardinality Estimation-based Adaptive Multi-tree Splitting algorithm for RFID System

Cardinality Estimation-based Adaptive Multi-tree Splitting A...

引用

International Conference on Measurement, Instrumentation and Automation (ICMIA 2012)

作者： Tan, Yong Liu, Guixiong Wu, Guoguang S China Univ Technol Sch Mech & Automot Engn Guangzhou 510640 Guangdong Peoples R China

ISBN: (纸本)9783037855454

This paper proposes a cardinality estimation-based adaptive multi-tree splitting (CEAMS) algorithm. Tag number is estimated by using the depth information obtained from the first tag identification and adaptively assigns the splitting strategy according to the splitting subset rule table. Simulation results show that the average total number of timeslots can be reduced by 65% compared with DBS and the system throughput is about 0.52 when the number of tags ranged from 5 similar to 1000.

关键词： RFID anti-collision algorithm Tag number estimate Adaptive multi-tree splitting

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The Scheme Design of RFID anti-collision in Mobile Tag Environment 6th

The Scheme Design of RFID Anti-collision in Mobile Tag Envir...

引用

6th International Conference on Communications, Signal Processing, and Systems (ICCSPS)

作者： He, Xuan Li, Shizhong Wang, Hongjun Yuan, Quan Elect Engn Inst Hefei 230037 Anhui Peoples R China TH Ctr China Beijing 102102 Peoples R China

ISBN: (纸本)9789811065712;9789811065705

Due to collision and mobile problems, it is difficult to use a single reader to identify a large number of mobile tags successfully. In this paper, a new anti-collision scheme is proposed, which combines the tag anti-collision algorithm and multiple reader deployment to solve the mobile tag collision problem. This scheme adopts grouped dynamic frame slotted ALOHA algorithm based on CDMA to deal with the collision which is caused by that large amounts of tags response to the reader. And it adopts the power control algorithm based on cellular model to deal with the collision between the readers. The simulation results show that the total number of slots needed by the tag anti-collision algorithm is less than other similar algorithms;the cumulative adjustment times of reader anti-collision algorithm are less than other similar algorithms, and the algorithm is more stability. It has certain application value in practical engineering.

关键词： Radio frequency identification Mobile tag anti-collision algorithm Power control Cellular model

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Design of and Research on an Attendance System Based on RFID and WSN Technologies for the Rail Transportation Industry 3rd

Design of and Research on an Attendance System Based on RFID...

引用

3rd International Conference on Electrical Engineering and Information Technologies for Rail Transportation (EITRT)

作者： Liu, Chongjun Fan, Kuangang Pan, Yi Ren, Yindong United Automot Elect Syst Co Ltd Syst & Elect Control Unit NE1 Shanghai Peoples R China Jiangxi Univ Sci & Technol Sch Mech & Elect Engn Ganzhou Jiangxi Peoples R China

ISBN: (纸本)9789811079894;9789811079887

To address the serious conflict and poor reliability issues in existing radio-frequency identification (RFID) systems, a complete set of remote wireless noncontact attendance system was designed using a 2.4 GHz active RFID system as the terminal reading device for recording employee attendance information. Combined with a wireless network architecture provided by a wireless sensor network, the system wirelessly transmits attendance information to a remote computer control system, thereby effectively improving the cumbersome wiring, poor mobility, and expansibility faults of the cable-contacted attendance system used in the Rail Transportation industry. Consequently, production safety and personnel attendance management become more convenient. The client management system communicates using LabVIEW development tools with the SQL SERVER 2008 database to achieve attendance management functions. To address the electronic tag collision problem in an active RFID system, an improved framed-slotted ALOHA anti-collision algorithm was proposed by combining the original algorithm with dynamic grouping ideas, thereby improving RFID system performance and efficiency.

关键词： Rail transportation attendance system RFID WSN LabVIEW anti-collision algorithm

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Study on RFID Technology and anti-collision of Personnel Orientation in Coal Mine

Study on RFID Technology and Anti-collision of Personnel Ori...

引用

International Conference on Electrical Information and Mechatronics (ICEIM)

作者： Pang, Xiaopeng Zhang, Changsen Henan Polytech Univ Comp Sci & Technol Coll Kaifeng Henan Peoples R China

ISBN: (纸本)9783037853115

The RFID technology of personnel orientation in coal mine is introduced in this article. Combined with special circumstances and special coal mine safety regulations, the unavoidable collision problem in RFID is also analyzed detailedly. It points out the deficiencies of the general anti-collision algorithm. Then it brings forward an improved anti-collision algorithm, which is significative for enhancing performance of personnel orientation system in coal mine.

关键词： personnel orientation in coal mine RFID anti-collision algorithm

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