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International Conference on (ICEPT) Electronic Packaging technology

作者： Jianqiang Li Lianhe Ji Wenhe Wang Zhenjiang Pang Haifeng Zhang Dongmei Liu State Grid Key Laboratory of Power Chip Designing and Analysis Technology Beijing Smart-Chip Microelectronics Technology Company Limited Beijing China

ISBN: (数字)9781728150642

ISBN: (纸本)9781728150659

This paper present the industrial case study on quality improvement of the post reflow cleaning process in an assembly industry. Ceramic carrier boards are widely used in industrial fields due to their good thermal conductivity, strength and insulation. In order to reduce the terminal volume, flexible plates are also widely used. For the high quality industry application, a number of manufacturing related issues needed to be addressed. Of all Potential defects, the PCBA pollution is most critical defect which will affect the long term reliability. The ceramic board and FPC was assembly with Sn96.5Ag3Cu0.5 solder paste an orthogonal experimental design was conducted to understand the relationship among the washing temperature, washing solution and the cleanness level. From the experiment we got the optimal post-reflow process conditions for achieving highest quality cleaning status, which meet the requirements of IPC standard.

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Research on Dual-Mode Communication technology Based on power Line Carrier and Micro power Wireless

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Journal of Physics: Conference Series 2021年第1期2025卷

作者： Yan Long Yongli Chen Xudong Zhang Deyong Xiao Zheng Li Xiaoke Tang State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing Smart-Chip Microelectronics Technology Co. Ltd Beijing 100192 China Beijing Engineering Research Center of High-Reliability IC with Power Industrial Grade Beijing Smart-Chip Microelectronics Technology Co. Ltd Beijing 100192 China State Grid Hebei Electric Power Co. Ltd Shijiazhuang 050000 China

At present, the power meter reading system mainly uses the single power line carrier meter reading mode or the single micro power wireless meter reading mode. Due to the disadvantages of the two modes, the single meter reading mode can not meet the meter reading under different environmental conditions. In order to improve the success rate of communication, this paper puts forward the dual-mode communication technology of power line carrier and micro power wireless integration, which is based on the power line carrier It overcomes the defects of single meter reading mode and improves the real-time performance, reliability and success rate of meter reading.

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Performance analysis of lora modulation with residual frequency offset 4

Performance analysis of lora modulation with residual freque...

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4th IEEE International Conference on Computer and Communications, ICCC 2018

作者： Tang, Xiaoke Li, Hongqiang Zhang, Yubing Zhao, Xu State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing Smart-Chip Microelectronics Technology Co. Ltd. Beijing100192 China

ISBN: (纸本)9781538683392

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. This paper analyzes the physical layer of LoRa, presents a basic mathematical signal processing model, and proposes a demodulation algorithm based on Fast Fourier Transform (FFT). The simulation performance of the demodulation algorithm is compared with the theoretical performance one of quadrature modulation incoherent detection. The results show that the performance derived through these two approaches is consistent. In addition, the performance of LoRa system with residual frequency offset under different spread factor (SF) is analyzed, and verified that the performance of the system decreases with the increase of SF. So we have to adopt better algorithm to correct frequency offset, otherwise the coverage will decrease significantly. © 2018 IEEE.

关键词： Wide area networks

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Research on The Secure Transmission Method of Terminal Upgrade Files based on Dynamic Encryption key

Research on The Secure Transmission Method of Terminal Upgra...

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Electronic Information technology and Computer Engineering (EITCE), International Conference on

作者： Yilun Fu Feng Zhai Wei Cen Yanjie Zhang Baofeng Li China electric power research institute Beijng China State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing Smart-Chip Microelectronics Technology Co. Ltd. Beijng China

ISBN: (数字)9781728135847

ISBN: (纸本)9781728135854

In order to improve the secure transmission capability of terminal upgrade files, we proposed a secure transmission method of terminal upgrade files based on dynamic encryption key. This method realized the access control of terminal upgrade file by using no proxy key publishing protocol, designed the dynamically symmetric key for the terminal upgrade file. The encoding calculation of terminal upgrade files in the process of secure encryption is carried out based on bilinear mapping method. We scrambled and rearranged the terminal upgrade files according to the intensity of plaintext attack, then adopted the random linear coding method to encrypt the terminal upgrade files by dynamic symmetric key and realize the secure transmission for the files. Simulation results show that this method can effectively improve the security transfer performance of upgrade files, and can meet the requirements of current business applications.

关键词： Heuristic algorithms Encryption Protocols

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technology Research on the Application of High Safety Anti-Metal RFID Tags in the Asset Management of power Equipment

Technology Research on the Application of High Safety Anti-M...

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International Conference on Artificial Intelligence and Advanced Manufacturing (AIAM)

作者： Jia Liu Qingqin Fu Yubo Yuan Jianfeng Fu Beijing Chip Microelectronics Technology Co. Ltd. Key Lab of Power Grid Design and Analysis State Grid Corporation of China Beijing China

The power equipment assets has the characteristics of large initial investment, high operation cost, long service time. Therefore it is the basic requirement to carry out the electrical equipment life cycle management to ensure the grid assets safety running. Using security Ultra High Frequency (UHF) Radio Frequency Identification (RFID) anti metal tag as the equipment asset identification, it is useful to ensure the legitimacy of reader and tag, and the security of data storage and transmission, and the personnel authority access control. In this paper, the characteristics, working principle and working flow of high security RFID electronic tags are designed and studied. The typical solution is provided for the intelligent management of grid assets.

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An instruction based automatic workflow testing method for security chip

An instruction based automatic workflow testing method for s...

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IEEE International Conference on Automation, Electronics and Electrical Engineering (AUTEEE)

作者： Jing Zhou Qingqin Fu Jia Liu Rui Wang Xuesong Bai Beijing Chip Microelectronics Technology Co. Ltd. Key Lab of Power Grid Design and Analysis State Grid Corporation of China Beijing China

ISBN: (数字)9781728150307

ISBN: (纸本)9781728150314

This paper analyzes the faults of traditional workflow testing of security chip, and proposes a new automatic workflow testing for security chip. This method is based on instruction processing and encapsulates 645 protocol, to simulate the workflow of main station, security chip and electric energy meter. Comparing to traditional method, it overcomes the disadvantages that traditional workflow has no interactive testing with real energy meter which may lead to faults when testing on the real energy meter. Meanwhile, it advances the schedule of the smoke test and realizes the workflow modularization, greatly improves the efficiency of the workflow test and regression test.

关键词： Testing Meters Software Automation Protocols Ciphers

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A Small Target Recognition Algorithm Based on Improved SSD

A Small Target Recognition Algorithm Based on Improved SSD

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International Conference on Artificial Intelligence and Advanced Manufacturing (AIAM)

作者： Yasong Wang Wenpeng Cui Hongbo Yang School of Automation Beijing Information Science and Technology University Beijing China State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing Smart-Chip Microelectronics Technology Co. Ltd. Beijing China

In the power industry, there are a lot of image and video data need to be analyzed to find out equipment abnormalities such as bolt looseness and out of stock. Using artificial intelligence technology for image analysis can reduce the artificial dependence, but the general object detection algorithms, such as SSD, can not get a good detection effect for small targets. In this paper, we proposed an improved SSD object recognition algorithm to improve the recognition accuracy of small targets, based on the characteristics of power image recognition requirements. The method can improve the ability of SSD framework to understand small objects and enhance the location information and semantic information of the small targets. The method introduce the deconvolution structure to act on the shallow feature layer Conv4_3 and then use pooling layer to get the fixed size. Finally the method made Conv14 upsampled to the same size, and make full use of the information of small targets. Experimental results show that the proposed method can achieve the good recognition accuracy.

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design of Processor power Supply

Design of Processor Power Supply

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2019 International Conference on Artificial Intelligence, Control and Automation Engineering(AICAE 2019)

作者： Wang JIAN Li TAO Xiu-Li YU State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing Smart-Chip Microelectronics Technology Co. Ltd. Beijing Engineering Research Center of High-reliability IC with Power Industrial Grade Beijing Smart-Chip Microelectronics Technology Co. Ltd.

A design of a power products onboard for industrial processor power supply is introduced. The power supply topology adopts full bridge circuit topology and double current synchronous rectifier. It selects the power devices and analyzes the main influence on the power loss of power efficiency, and then completes the design of the power supply products. The final results show that the electrical performance parameters consistent with the expected effect of customers, and has been applied in industrial processor power supply equipment successfully.

关键词： Module power supply Full bridge topology Synchronous rectification Double current synchronous rectifier

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A design of The Passive Micro Sensor for SF6 Detection

A Design of The Passive Micro Sensor for SF6 Detection

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

作者： Lei Qiao Rui Liu Xin Chu Zhe Zheng Wenpeng Cui State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing Smart-Chip Microelectronics Technology Co. Ltd Beijing China Beijing Engineering Research Center of High-reliability IC with Power Industrial Grade Beijing Smart-Chip Microelectronics Technology Co. Ltd Beijing China

ISBN: (数字)9781728131375

ISBN: (纸本)9781728131382

Aiming to explore the passive micro sensor for SF6 detection, the proposed method is about designation and structure of SF6 detection micro sensor with high signal-to-noise ratio, miniaturization and passivity. Advanced micro-machining technology is presented to sharply reduce the volume of the sensor, where the volume can be reduced by more than 50% compared with the existing sensor with discrete combination. The cost and volume reduction does not only make the new detection equipment possible, but the energy consumption of the whole system will also be greatly reduced. The application and promotion of the passive micro sensor in ring network cabinet, GIS, GIL and cable channel can bring considerable economic benefits.

关键词： Sulfur hexafluoride Absorption Optical fibers Optical fiber sensors

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A chip Data Security Transmission Method based on Command Control Word Mode

A Chip Data Security Transmission Method based on Command Co...

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

作者： Liu Jia Qingqin Fu Zhengquan Ang Qian Zhang Ling Yi Tingzheng Feng Xuesong Bai Yuejie Shi Beijing Smart Chip Microelectronics Technology Company Limited Beijing Electric Power High Reliability Integrated Circuit Design Engineering Research Center Beijing China Beijing aerospace flight control center Beijing China Beijing Smart Chip Microelectronics Technology Company Limited State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing China

ISBN: (数字)9781728130668

ISBN: (纸本)9781728130675

Aiming at the shortcomings of traditional security chip data transmission, a method of security chip data transmission based on command control word is proposed. The method divides the read command mode and write command mode of the security chip files into two kinds of representation methods. The read command and write command of the security chip files are transmitted by different data transmission methods. In the control word of read and write command mode of security chip files, the read and write commands of security chip files are transmitted in four ways: plaintext, ciphertext, plaintext + MAC and ciphertext + MAC. The properties of prohibit adding and updating are added to the writing command control word of security chip files. In the control word of read command and write command of security chip files, define the permissions that read command and write command operation need to satisfy.

关键词： Data communication Writing Authentication Process control Cryptography

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