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PID控制及图像识别的自主循迹四旋翼设计

单片机与嵌入式系统应用 2018年第9期18卷 66-68页

作者：齐垒王鑫李想陈文龙李富超彭梦媛王朝辉张浩然天津理工大学工程训练中心天津300384

本文四轴平台以STM32F407微控制器作为飞行控制的核心,硬件包括用于飞行姿态信息采集的MPU-9150九轴陀螺仪传感器,用于飞行器高度和航线图像信息采集的US-100超声波模块和配置了云台的OV7670摄像头模块,为四轴飞行高度和航线提供期望修... 详细信息

本文四轴平台以STM32F407微控制器作为飞行控制的核心,硬件包括用于飞行姿态信息采集的MPU-9150九轴陀螺仪传感器,用于飞行器高度和航线图像信息采集的US-100超声波模块和配置了云台的OV7670摄像头模块,为四轴飞行高度和航线提供期望修正参数。另增加一片STM32F407芯片进行图像处理,提高图像采集的实时性和处理的快速性。通过姿态解算、PID控制以及结合图像实时处理来实现四轴的平稳飞行和自主循迹。

关键词：图像处理 PID算法 STM32F407 MPU-9150 OV7670视觉传感器 US-100超声波传感器

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海洋科学数据汇聚共享服务平台建设

数据与计算发展前沿 2024年第3期6卷 92-98页

作者：任焕萍李一凡张斌郑双强王彦俊冯立强李富超中国科学院海洋研究所海洋大数据中心山东青岛266071 中国科学院海洋科学数据中心山东青岛266071

【应用背景】海洋数据是认识海洋、经略海洋的基础,随着海洋观测和探测技术的快速发展,海洋数据呈爆炸式增长,数据的开放共享需求日益迫切。【目的】为了实现多源海洋科学数据的整合,打通数据存储孤岛,建立统一的元数据标准和数据共享链... 详细信息

【应用背景】海洋数据是认识海洋、经略海洋的基础,随着海洋观测和探测技术的快速发展,海洋数据呈爆炸式增长,数据的开放共享需求日益迫切。【目的】为了实现多源海洋科学数据的整合,打通数据存储孤岛,建立统一的元数据标准和数据共享链路,【方法】本文构建了一个海洋科学数据汇聚共享服务平台,提供海洋数据汇交、审核、注册、存储、检索和共享全过程管理的一体化、在线化和流程化服务,为不同用户提供公平渠道获取数据、信息、知识和技术;提供DOI/CSTR自动注册服务,加强数据知识产权保护,保护数据所有者权益。【结果】平台以数据规范为牵引,将数据存储规范、管理流程规范、元数据标准纳入系统设计中,实现数据统一编码、统一管理、统一存储、统一发布的“四统一”。【结论】通过平台的应用推广,能够更好地推进海洋科学数据高效共享和利用,充分挖掘海洋信息资源的潜在价值,高质量支撑海洋科学研究。

关键词：海洋大数据数据汇聚数据共享数据管理系统

物联网RFID技术在农业高校教学管理中的应用

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中国科教创新导刊 2013年第31期 213-214页

作者：张伟余晓伟李福超朱保安袁超顿文涛毕庆生河南农业大学信息化管理处河南农业大学理学院河南郑州450002

本文介绍了基于RFID的物联网技术及其在教育领域中的应用优势,结合农业高校的教学与管理特点,较为全面地论述了物联网RFID技术在农业高校教学与管理中的应用.

关键词：物联网 RFID 电子标签

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Search for carbon stars and DZ white dwarfs in SDSS spectra survey through machine learning

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Science China(Physics,Mechanics & Astronomy) 2014年第1期57卷 176-186页

作者： SI JianMin LUO Ali li YinBi ZHANG JianNan WEI Peng WU YiHong WU fuchao ZHAO YongHeng National Laboratory of Pattern Recognition Institute of Automation Chinese Academy of Sciences Key Laboratory of Optical Astronomy National Astronomical Observatories Chinese Academy of Sciences University of Chinese Academy of Sciences

Carbon stars and DZ white dwarfs are two types of rare objects in the Galaxy. In this paper, we have applied the label propagation algorithm to search for these two types of stars from Data Release Eight （DR8） of the Sloan Digital Sky Survey （SDSS）, which is verified to be efficient by calculating precision and recall. From nearly two million spectra including stars, galaxies and QSOs, we have found 260 new carbon stars in which 96 stars have been identified as dwarfs and 7 identified as giants, and 11 composition spectrum systems （each of them consists of a white dwarf and a carbon star）. Similarly, using the label propagation method, we have obtained 29 new DZ white dwarfs from SDSS DR8. Compared with PCA reconstructed spectra, the 29 findings are typical DZ white dwarfs. We have also investigated their proper motions by comparing them with proper motion distribution of 9,374 white dwarfs, and fotmd that they satisfy the current observed white dwarfs by SDSS generally have large proper motions. In addition, we have estimated their effective temperatures by fitting the polynomial relationship between effective temperature and g-r color of known DZ white dwarfs, and found 12 of the 29 new DZ white dwarfs are cool, in which nine are between 6,000 K and 6,600 K, and three are below 6,000 K.

关键词： machine learning label propagation carbon stars DZ white dwarfs

Influence of particle size and ionic strength on the freeze-thaw stability of emulsions stabilized by whey protein isolate

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Food Science and Human Wellness 2022年第4期11卷 922-932页

作者： Hao Lai fuchao Zhan Yujie Wei Abel W.S.Zongo Sha Jiang Haomin Sui Bin li Jing li College of Food Science and Technology Huazhong Agricultural UniversityWuhan 430070China Key Laboratory of Environment Correlative Dietology(Huazhong Agricultural University) Ministry of EducationWuhan 430070China

The influence of particle size and ionic strength on the freeze-thaw(FT) stability of emulsions stabilized by whey protein isolate(WPI) was investigated in this study. The destabilization of emulsions during the FT process could be suppressed in a way by decreasing the particle size of the initial emulsions, which was the result of retarding the coalescence between oil droplets. To further improve the FT stability of emulsions, different amounts of Na Cl were added before emulsification. The emulsions with the ionic strength at 30–50 mmol/L exhibited good FT stability. Notably, the ionic strength in this range would not lower the freezing point of emulsions below the freezing temperature used in this study. Salt addition could improve the structural properties of proteins, which was available to strengthen the rigidity and thickness of interfacial layers, sequentially building up the resistance that the destruction of ice crystals to emulsions. Moreover, stronger flocculation between emulsion droplets could promote the formation of a gel-like network structure dominated by elasticity in the emulsion system, which might effectively inhibit the movement of droplets, and improve the FT stability of emulsions eventually. The result was of great significance for the preparation of emulsion-based foods with improved FT stability.

关键词： Emulsion Freeze-thaw stability Whey protein isolate Particle size Ionic strength

Sedimentary Age of the Baoligaomiao Formation in the Zhanlantun Area, Inner Mongolia:Constraints by Fossil Assemblage and Zircon Geochronology

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Acta Geologica Sinica(English Edition) 2018年第3期92卷 1251-1254页

作者： QIN Tao QIAN Cheng li linchuan JIANG Bin SUN Wei NA fuchao SI Qiuliang MA Yongfei ZANG Yanqing College of Geoscience Jilin University Shenyang Geological Survey Center China Geological Survey

Objective The Baoligaomiao Formation is widely distributed from the East Wuqi to Zhanlantun area in the Xing’an Mongolian orogenic belt(Tian Shugang et al.,2016;Wei et al.,2017).This formation contains abundant Angar... 详细信息

关键词： Sedimentary Age Fossil Assemblage

Syringaresinol-4-O-β-D-glucoside alters lipid and glucose metabolism in HepG2 cells and C2C12 myotubes

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Acta Pharmaceutica Sinica B 2017年第4期7卷 453-460页

作者： Shuai Wang Chongming Wu Xin li Yue Zhou Quanyang Zhang fuchao Ma Jianhe Wei Xiaopo Zhang Peng Guo Institute of Medicinal Plant Development Chinese Academy of Medical Sciences & Peking Union Medical College Research Centre on life Sciences and Environment Sciences Harbin University of Commerce School of Pharmaceutical Science Hainan Medical University

Syringaresinol-4-O-β-D-glucoside(SSG), a furofuran-type lignan, was found to modulate lipid and glucose metabolism through an activity screen of lipid accumulation and glucose consumption, and was therefore considered as a promising candidate for the prevention and treatment of metabolic disorder,especially in lipid and glucose metabolic homeostasis. In this study, the effects of SSG on lipogenesis and glucose consumption in Hep G2 cells and C2C12 myotubes were further investigated. Treatment with SSG significantly inhibited lipid accumulation by oil red O staining and reduced the intracellular contents of total lipid, cholesterol and triglyceride in Hep G2 cells. No effect was observed on cell viability in the MTT assay at concentrations of 0.1–10 μmol/L. SSG also increased glucose consumption by Hep G2 cells and glucose uptake by C2C12 myotubes. Furthermore, real-time quantitative PCR revealed that the beneficial effects were associated with the down-regulation of sterol regulatory element-binding proteins-1c,-2(SREBP-1c,-2), fatty acid synthase(FAS), acetyl CoA carboxylase(ACC) and hydroxyl methylglutaryl CoA reductase(HMGR), and up-regulation of peroxisome proliferator-activated receptors alpha and gamma(PPARα and PPARγ). SSG also significantly elevated transcription activity of PPARγtested by luciferase assay. These results suggest that SSG is an effective regulator of lipogenesis and glucose consumption and might be a candidate for further research in the prevention and treatment of lipid and glucose metabolic diseases.

关键词： Syringaresinol-4-O-β-d -glucoside lipid accumulation Glucose consumption Insulin resistance HepG2 C2C12 Oil red O

New Discovery of the Devonian Orthoclase Granite of Nenjiang–Heihe Structural belt, China and its Zircon U-Pb Data

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Acta Geologica Sinica(English Edition) 2018年第2期92卷 874-875页

作者： YANG Fan NA fuchao ZHANG Guangyu WANG Yan FU Junyu SUN Wei CHEN Jingsheng li Bin liU Miao PANG Xuejiao SHI Yi SHI Lu College of Earth Sciences Jilin University Shenyang Geological Survey Center China Geological Survey Key Laboratory of Mineral Resources Evaluation in Northeast Asia Ministry of Land and Resources of China

Objective The Nenjiang-Heihe structural belt is located in the eastern Xing＇anling Mongolian Orogenic Belt between the Songnen block and Xiang＇an block. This structural belt has long been the focus of geological scholars （Miao Laicheng et al., 2003; liang Chenyue et al., 2011; li Chao et al., 2017）, which has complex geological condition, strong metamorphism and deformation and serious vegetation cover. There is a great dispute about the time limit of collage of the structural belt. In order to solve the problem, this paper reports a newly discovered Devonian orthoclase granite near Hadayang in Molidawa banner in the middle of this structural belt, which will provide evidence for the tectonic evolution of Nenjiang-Heihe structural and Xing＇anling Mongolian Orogenic Belt.

关键词： Pb ICP MS China and its Zircon U-Pb Data

Personnel Localization Method in Transformer Substation Based on Factor Graph

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Journal of Computer and Communications 2023年第8期11卷 96-106页

作者： Haifei Yang Yuntao Zhou Huaijun li Baojun Wu fuchao liu Status Grid Shanxi Yangquan Power Supply Company Yangquan China School of Automation Beijing Information Science & Technology University Beijing China

A SINS/GNSS location method based on factor diagram is proposed to meet the requirement of accurate location of substation construction personnel. In this paper, the inertial autonomous positioning, carrier motion information acquisition and satellite positioning technologies are integrated. The factor graph method is adopted to abstract the measurement information received by inertial navigation and satellite into factor nodes, and the state information into variable nodes, so as to construct the SINS/GNSS construction personnel positioning fusion factor graph model. The Gauss-Newton iterative method is used to implement the recursive updating of variable nodes, and the optimal estimate of the location information of the construction personnel is calculated, which realized the high precision location of the construction personnel. The factor graph method is verified by pedestrian navigation data. The results show that the factor graph method can continuously and stably output high-precision positioning results, and realize non-equidistant fusion of SINS and GNSS. The positioning accuracy is better than Kalman filter algorithm, and the horizontal positioning accuracy is less than 1 m. Therefore, the factor graph method proposed can provide accurate location information for substation construction personnel.

关键词： Personnel Positioning Factor Graph SINS/GNSS Gauss-Newton Iteration Information Fusion