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检索条件"机构=State Grid Key Laboratory of Power Industry Chip Design and Analysis Technology"

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Phase Tracking Algorithm of IEEE 802.15.4g MR-OFDM with Frequency Offset

Phase Tracking Algorithm of IEEE 802.15.4g MR-OFDM with Freq...

引用

International Conference on Electronic Engineering and Informatics (EEI)

作者： Xiaoke Tang Jichao Liu Dongyan Zhao Yubo Wang Yahong Zhao State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing Smart-Chip Microelectronics Technology Co. Ltd. Beijing China

ISBN: (纸本)9781728140773

IEEE 802.15.4g Standard specifies multi-rate and multi-regional orthogonal frequency division multiplexing (MR-OFDM) physical layer, which supports principally outdoor, low-data-rate, wireless, smart metering utility network (SUN). The inter-channel interference (ICI) results in subcarrier frequency sampling offset and phase shift for signal on MR-OFDM. In this paper, phase tracking algorithms which estimate and compensate the offset on symbols are studied. A basic phase tracking method is presented that the phase rotation of reception signal can be recognized by using the data on the pilot tones. Furthermore, in order to mitigation the influence of noise, an average-based algorithm is proposed as a modified solution. In contrast with the basic method, the average-based algorithm enhances the reliability of phase tracking. Simulations of algorithms are assessed, which are in accordance with theoretical analysis.

关键词： adjacent channel interference OFDM modulation phase shift keying reliability sampling methods smart meters Zigbee Smart meters Orthogonal frequency division multiplexing adjacent channel interference ZigBee Phase shift keying sampling methods FREQUENCY SHIFT phase rotation algorithms subcarrier frequency INSTITUTE OF ELECTRICAL AND ELECTRONIC ENGINEERS

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Fabrication of a temperature sensor for monitoring the temperature of Smart meter terminals

Fabrication of a temperature sensor for monitoring the tempe...

引用

International Conference on (ICEPT) Electronic Packaging technology

作者： Shuaipeng Wang Haifeng Zhang Dongyan Zhao Zhen Fu Yanning Chen Yidong Yuan Yubo Wang State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing Smart-Chip Microelectronics Technology Co. Ltd. Beijing China

ISBN: (数字)9781728150642

ISBN: (纸本)9781728150659

Smart meter terminals are some of the most familiar monitoring unit. As recent research because of poor contact, aging, corrosion and other factors, the terminal of smart meter will cause heat, and eventually lead to the burnout of the ***. In this paper, we summarize how NTC temperature sensors can be operated, and their working principle is presented. Then the thermal of the smart meter is simulated by computer and we also discuss the advantages of this sensor.

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design of short-circuit protection circuit for half bridge topology switching power supply

Design of short-circuit protection circuit for half bridge t...

引用

IEEE Advanced Information Management,Communicates,Electronic and Automation Control Conference (IMCEC)

作者： Wang Jian Li Tao Yu Xiu-Li State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing Smart-Chip Microelectronics Technology Co. Ltd. Beijing China

Half bridge switching power supply has problems such as poor capacitive starting capacity and easy malfunction of short-circuit protection circuit. Then a new type of short-circuit protection circuit for switching power supply is designed. The circuit is for sampling and protection based on half bridge partial voltage capacitance ripple characteristics. It has the advantages of rapid fault protection adjustable trigger time and recovery time. It shows that the circuit scheme has a good protective effect on the power converter in various load environments, and it has reached desired effect, according to the simulation results and the circuit application results.

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Performance analysis of IEEE 802.15.4g MR-OFDM with Frequency Offset

Performance Analysis of IEEE 802.15.4g MR-OFDM with Frequenc...

引用

International Conference on Communication technology (ICCT)

作者： Jichao Liu Yahong Zhao Ji Yang Xiaoke Tang State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing Smart-Chip Microelectronics Technology Co. Ltd. Beijing China

IEEE 802.15.4g Standard specifies multi-rate and multi-regional orthogonal frequency division multiplexing (MR-OFDM) physical layer, which supports principally outdoor, low-data-rate, wireless, smart metering utility network (SUN). Caused by Doppler frequency shift of fading channel, the inter-channel interference (ICI) arises in MROFDM system. In this paper, the degrading of performance due to ICI for detection of phase shift keying modulation signal is provided. It is derived that non-ideal properties for reception symbols are characterized by sampling offset and phase shift on subcarrier. Furthermore, the influence on data demodulation under different conditions is analyzed in detail. Simulation results are consistent with the theoretical analysis.

关键词： OFDM Frequency modulation Phase shift keying Doppler effect Frequency-domain analysis IEEE 802.15 Standard Demodulation

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design for RTDB Memory Structure of DCS

Design for RTDB Memory Structure of DCS

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IEEE Advanced Information technology, Electronic and Automation Control Conference (IAEAC)

作者： Ran Zhang Xi Feng Wennan Feng Yi Hu Xiaoke Tang State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing Smart-Chip Microelectronics Technology Co. Ltd. Beijing China

Real-time database (RTDB) is an important part of the distributed control system (DCS), which is equivalent to a data processing center and functions as a data exchange area. The RTDB kernel carries the main features of the RTDB, supports task timing constraints, maintains a large amount of shared data, and ensures the integrity, consistency and real-time performance of the data. It also provides data access services for historical databases and human-computer interaction client programs, and is a bridge for data interaction between controllers and clients. The data in the real-time library is stored in memory. Therefore, the design of the RTDB memory structure directly affects the quality of the entire DCS system.

关键词： Real-time systems Databases Memory management Libraries Industrial control Data structures Timing

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Research and design of key Management System in power Distribution Network Based on Quantum Private Communication

Research and Design of Key Management System in Power Distri...

引用

International Conference on Information Systems and Computer Aided Education (ICISCAE)

作者： Shaoxian Xia Hongshu Ye Xin Xia Binbin Xue Kewen Yang Yuhua Lu State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing Smart-Chip Microelectronics Technology Co. Ltd. Beijing China

ISBN: (数字)9781728130668

ISBN: (纸本)9781728130675

power distribution operation involves the supervision and control of the operating states of a large distribution power grid. This technology includes several features, e.g. an abundant amount of application nodes, diversity of communication channels, etc. To accelerate the construction of state grid-electric Internet of things and to guarantee the security of power grids data network and to consider the feature of power grids, a synthetic key management system is proposed. In the first section of this paper, from the perspective of maturity and practicality of related technology, the feasibility of combining quantum private communication and automatic power grid key management system is analyzed and demonstrated. In the next section, a key-management method, which is designed to combine quantum private communication technology and interaction with encryption devices, is designed and implemented. In the concluding section, to guarantee the integrity and atomicity in key storage processes and to achieve the quantum key storage, rollback mechanism of large-capacity quantum key storage is studied and discussed.

关键词： Ciphers Encryption power distribution Authentication

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Delay CoMP of LoRa Modulation in Wireless Tree Topology Network

Delay CoMP of LoRa Modulation in Wireless Tree Topology Netw...

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International Conference on Communication technology (ICCT)

作者： Hongqiang Li Yubing Zhang Xu Zhao Xiaoke Tang State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing Smart-Chip Microelectronics Technology Co. Ltd. Beijing China

The rapid development of Internet of Things (IoT) puts forward much requirements for wireless communication technology. Low power Wide Area Networks (LPWAN) are designed for low bandwidth, low power, long range and large number of connected IoT applications. As one of the LPWAN, Low power Long Range Transceiver (LoRa) described as a Frequency Shift Chirp Modulation (FSCM), is widely concerned and studied. In this paper, the signal reception of LoRa modulation in the wireless tree topology is analyzed, and the multi-user interference analysis proves that the multi-user interference has a great impact on the system performance. At the same time, we proposed Delay Coordinated Multiple Points Transmission (DCoMP). Multiple nodes close to each other send the same data to the target node. Due to the inaccuracy of synchronization between nodes, there will be a certain timing offset when sending signals to the same target node. After combining signals of multiple nodes according to different timing offset, the receiver performance of signals can be improved. The coordinated nodes can also actively adjust the signal sending timing according to the path time delay and processing delay, so as to improve the receiving performance of the signal merging algorithm of the receiver node. LoRa modulation improves the signal reception performance by adopting DCoMP transmission, thus improving the overall throughput of the system.

关键词： Frequency modulation Delays Interference Wireless communication Network topology Topology

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An analysis of power Dissipation analysis and power Dissipation optimization Methods in Digital chip Layout design

An Analysis of Power Dissipation Analysis and Power Dissipat...

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International Conference on Communication technology (ICCT)

作者： Yapeng Zhang Xu Hu Xi Feng Yi Hu Xiaoke Tang State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing Smart-Chip Microelectronics Technology Co. Ltd. Beijing China

With the development of integrated circuit (IC), power dissipation has become an important index of chip performance. This paper first discusses the sources and types of chip power dissipation, then introduces the methods of static power dissipation analysis and dynamic power dissipation analysis, and finally gives the power dissipation analysis and optimization methods of IC chip digital layout design stage.

关键词： power dissipation Leakage currents Clocks Layout Standards Logic gates Capacitance

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design of an accelerometer in inclination monitoring of power transmission pole

Design of an accelerometer in inclination monitoring of powe...

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International Conference on (ICEPT) Electronic Packaging technology

作者： Yanning Chen Shuaipeng Wang Haifeng Zhang Dongyan Zhao Zhen Fu Yidong Yuan Yubo Wang State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing Smart-Chip Microelectronics Technology Co. Ltd. Beijing China

ISBN: (数字)9781728150642

ISBN: (纸本)9781728150659

Accelerometers are some of the most familiar micro electronic mechanical system (MEMS) sensor. Accelerometers are used in many fields, such as vehicle braking, mobile phone, gauge check and so on. In this paper, we summarize how accelerometers sensors can be operated, and their working principle is presented, and then the fabrication process of the accelerometers sensors is presented. Then we conducted a preliminary test on the performance of the sensor and discuss the optimization scheme of manufacturing process.

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A Survey of power-grid Artificial Intelligence

A Survey of Power-Grid Artificial Intelligence

引用

2019 2nd International Conference on Mechanical Engineering,Industrial Materials and Industrial Electronics(MEIMIE 2019)

作者： Yingying Chi Li Shen Wenpeng Cui Xiyuan Li Liang Wang Lei Qiao State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing Smart-Chip Microelectronics Technology Co.Ltd. State Grid Liaoning Electric Power Supply Co. Ltd.

This paper describes in detail the existing and the potential application scenarios of artificial intelligence in various related fields of power grid based on the national policy orientation and the layout plan of state grid Corporation of China. Some core technology research directions of power-grid artificial intelligence like intelligent sensing, artificial intelligence platform, big data, machine learning, computer vision, etc. to be launched in the future are highlighted in the paper.

关键词： Prediction Artificial intelligence Recursos.Mundiales aplicaiones

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