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A leakage detection system and a method used for detecting leakages in the wire bonding gas supply system are introduced. The leakage detection system is connected to the pipeline remotely from the gas outlet. The detection module receives flow rate signal and monitors the flow rate changes that represent the leakage in the pipeline. The importance of leakage detection in wire bonding system will...
Objective To set up the community health service(CHS) year-checking-up system — the important part of community health service automatic management system. Methods year-checking-up system is constructed on the platform of Visual studio 2005, and the construction consists of seven steps. The first is to establish the net. The second is to add up system configuration web.config. The third is background...
By the method of literature and research network, the main service demand were analyzed under the background of “Internet +”, put forward the medical service of various stakeholders of Benefiting People mode, and to explore the relationship between the two. Through the analysis of the needs of patients, this article summarizes the information technology and information resources of Traditional Chinese...
The shifting of English education at tertiary level in China from the traditional General English (GE) education which tends to focus on the fundamental knowledge of English language, basic language skills and standardized tests to ESP (English for Specific Purposes)-oriented education that pays attention to the needs of the most important stakeholder of education, the students. ESP-oriented education...
An interleaved current-fed bidirectional full-bridge DC/DC converter for on-board Electric Vehicle (EV) charger is proposed in this paper. This proposed DC/DC converter interleaves two isolated full-bridge converters. In the forward direction power flow, it is an input-parallel output-series (IPOS) voltage-fed construct with the merits that low input current ripple and output voltage ripple. The IPOS...
This paper proposes a new breed of solid-state transformer (SST) distribution tail system mainly based on hybrid cascaded multilevel converter and resonant DC-DC converters between medium-voltage distribution and low-voltage customer side. The proposed SST topology mainly combines per-phase cascaded H-bridge converters based on the DC transformers (DCTs) with the square-wave two-level VSC based on...
Wind power producers have begun to participate in electricity market in some developed countries. This paper presents a model for wind power flexible electricity contract (WPFEC) and focuses on the problem of contract scheduling. Stochastic dynamic programming approach is described for sequential decision making under uncertainty that allows wind power producers to maximize their revenue. Autoregressive...
Due to the serious problems of energy shortage and environmental pollution, the microgrid and electric vehicles(EV) are getting more and more attention. The energy supply mode of EVs can be divided into two types, which are plug-in charging mode and battery swapping mode. The plug-in charging mode is divided into two types in terms of coordination. In this paper the dispatching models of microgrid...
This paper proposes a novel individual phase current control scheme for star-connected cascaded power electronics transformer (PET) under unbalanced grid voltage conditions, and PET mainly combines the cascaded H-bridge converter with resonant DC-DC converters (CLLC) between medium-voltage distribution and low-voltage customer DC side. Compared with traditional DQ decoupling current control, each...
In this work, we proposed all spin logic device with voltage controlled magnetic anisotropy (VCMA-ASL). Simulation results by spin circuit method reveal that both switching time and energy consumption can be improved. It is shown that by increasing oxide thickness and VCMA coefficient, ultra-low power ASL device can be achieved.
Electric sector is confronting with ever increasing challenges. On one hand, due to fossil fuel depletion and environmental pollution problems, generation investment needs to be considered in more volatile and risky context. On the other hand, with augmenting multinational grid interconnection and power exchanges, cross-border transmission and generation investment becomes mutually dependent. In response...
An input-parallel output-series full-bridge DC/AC converter for on-board Electric Vehicle (EV) charger is proposed in this paper with the merits that low input current ripple and output voltage ripple. It can also decrease the current stress on the primary side devices and voltage stress on secondary side devices. This proposed DC/AC converter interleaves two isolated full-bridge converters with parallel...
Battery state of charge is related with available capacity. Battery available capacity varies with discharge current. Peukert's equation is a good way to estimate available capacity. But the practicability of Peukert's equation for Li-ion battery has to be verified. Especially, available capacity of Li-ion battery is influenced by temperature obviously. In this paper, discharge experiments under different...
In this paper, a new direction of arrival (DOA) estimation algorithm is proposed when uncorrelated and coherent wideband signals coexist. The proposed method estimates the uncorrelated signals and coherent signals respectively at two different stages. It makes the method resolve more sources than the array elements. Compared with the coherent signal subspace method (CSSM), the proposed method does...
Ubiquitous radar is a multi-beam staring system that is capable of achieving highly sophisticated Doppler discrimination. This paper focuses on the range-Doppler domain signal processing method for medium PRF (Pulse Repetition Frequency) ubiquitous radar. Firstly, the system architecture is introduced and the range-Doppler domain characteristics are analyzed based on the data of a ubiquitous radar...
As a high speed serial communication protocol, PCI Express (PCIe) is widely used in data transmission. This paper realized direct memory access (DMA) transmission in PCIe Gen2 8× mode based on Kintex-7 FPGA, and mainly solved timing problems caused by on-chip data stream buffer with large capacity. Firstly, PCIe DMA control process is optimized. Secondly, the connection of FIFO and PCIe IP core is...
With the rapid development of Internet technology, the mobile terminal as a carrier get more and more popular, such as smart phones, tablet PCs and other mobile wireless communicated devices, so that the MDTN (Mobile Delay Tolerant Network) has become a hot topic in the wireless sensor networks. At the same time these mobile devices have the advantages of mobility and portability, but there are some...
Well-established traffic models perceive the individual network client's entitlement to the choice with respect to when, where and how to travel. Then again, the choices concerning administration, control, configuration and change speculations are made by people in general area in light of a legitimate concern for the general public all in all. Our blended whole number direct programming models permit...
This paper presents an efficient and powerful method of electrocardiogram (ECG) identification. Specially, a set of discriminative feature representations can be learned from one-dimensional ECG signals with an arbitrary origin through deep learning, referred to as deep fusion features. Non-linear classifier is adopted to classify test ECG signals. A final simple voting step can further enhance performance...
With the booming development of Internet of Things, machine type communication (MTC) will play more and more important role. Today, 3GPP LTE network have many advantages such as covering a wide range, high transmit rate, low latency and so on, which will be the ideal bear-network of the MTC service. However, service features of MTC is quite different with that of human communication (human to human,...
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