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A Radio-Telemetry System for Navigation and Recording Neuronal Activity in Free-Roaming Rats

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Journal of Bionic Engineering 2012年第4期9卷 402-410页

作者： Dian Zhang Yanling Dong Megan Li houjun wang School of Automation Engineering University of Electronic Science and Technology of China Chengdu 611731 P. R. China School of Medicine Qingdao University Qingdao 266071 P R. China Shandong Eye Institute Qingdao 266071 P. R. China Zanvyl Krieger School of Arts and Sciences The Johns Hopkins University Baltimore 21218 USA

A radio-telemetry recording system is presented which is applied to stimulate specific brain areas and record neuronal ac- tivity in a free-roaming rat. The system consists of two major parts： stationary section and mobile section. The stationary section contains a laptop, a Micro Control Unit （MCU）, an FM transmitter and a receiver. The mobile section is composed of the headstage and the backpack （which includes the mainboard, FM transmitter, and receiver）, which can generate biphasic mi- crocurrent pulses and simultaneously acquire neuronal activity. Prior to performing experiments, electrodes are implanted in the Ventral Posterolateral （VPL） thalamic nucleus, primary motor area （M1） and Medial Forebrain Bundle （MFB） of the rat. The stationary section modulates commands from the laptop for stimulation and demodulates signals for neuronal activity recording. The backpack is strapped on the back of the rat and executes commands from the stationary section, acquires neuronal activity, and transmits the neuronal activity singles of the waking rat to the stationary section. All components in the proposed system are commercially available and are fabricated from Surface Mount Devices （SMD） in order to reduce the size （25 mm×15 mm ×2 mm） and weight （10 g with battery）. During actual experiments, the backpack, which is powered by a rechargeable Lithium battery （4 g）, can generate biphasic microcurrent pulse stimuli and can also record neuronal activity via the FM link with a maximum transmission rate of 1 kbps for more than one hour within a 200 m range in an open field or in a neighboring chamber. The test results show that the system is able to remotely navigate and control the rat without any prior training, and acquire neuronal activity with desirable features such as small size, low power consumption and high precision when compared with a commercial 4-channel bio-signal acquisition and processing system.

关键词： bio-robot radio-telemetry microcurrent stimulation navigation neuronal activity recording

A novel approach for unlabeled samples in radiation source identification

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Journal of Systems Engineering and Electronics 2022年第2期33卷 354-359页

作者： YANG Haifen ZHANG Hao wang houjun GUO Zhengyang School of Information and Communication Engineering University of Electronic Science and Technology of ChinaChengdu 611731China

Radiation source identification plays an important role in non-cooperative communication scene and numerous methods have been proposed in this field. Deep learning has gained popularity in a variety of computer vision tasks. Recently, it has also been successfully applied for radiation source ***, training deep neural networks for classification requires a large number of labeled samples, and in non-cooperative applications, it is unrealistic. This paper proposes a method for the unlabeled samples of unknown radiation source. It uses semi-supervised learning to detect unlabeled samples and label new samples automatically. It avoids retraining the neural network with parameter-transfer learning. The results show that compared with the traditional algorithms, the proposed algorithm can offer better accuracy.

关键词： radiation source identification deep learning semisupervised learning

基于多光谱遥感技术的高邮湖菹草时空演变及原因分析

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环境监测管理与技术 2024年第3期36卷 78-82,87页

作者：王厚俊戴源陈宇洁张开源高乾白爽江苏省扬州环境监测中心江苏扬州225000 南京信息工程大学环境科学与工程学院江苏南京210044 生态环境部卫星环境应用中心北京100094

为了解高邮湖优势沉水植物菹草剧烈变化的原因及其时空演变对区域水环境的影响,利用2019—2023年长时序多光谱卫星遥感影像,结合现场和水质自动站监测,对高邮湖菹草与水质开展长期观测。结果显示,菹草的生长与水温、浊度等环境因子密切... 详细信息

为了解高邮湖优势沉水植物菹草剧烈变化的原因及其时空演变对区域水环境的影响,利用2019—2023年长时序多光谱卫星遥感影像,结合现场和水质自动站监测,对高邮湖菹草与水质开展长期观测。结果显示,菹草的生长与水温、浊度等环境因子密切相关,其在生长期对水质具有净化作用,而在衰退期则会产生大量污染物;高邮湖的菹草盖度由2020年的65.5%下降至2023年的5.9%,对区域水质、生物多样性和生态质量指数产生不利影响;菹草的消失与水位变化、藻类影响、鱼类数量及其优势种变化密切相关,高邮湖存在由草型湖泊向藻型湖泊转化的趋势。

关键词：菹草时空演变多光谱遥感环境因子浅水湖泊

A Trust Assessment-Based Distributed Localization Algorithm for Sensor Networks Under Deception Attacks

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IEEE/CAA Journal of Automatica Sinica 2022年第10期9卷 1879-1882页

作者： Ya wang Xinming Chen Lei Shi Yuhua Cheng houjun wang the School of Automation Engineering University of Electronic Science and Technology of ChinaChengdu 611731 the School of Intelligent Manufacturing Chengdu Technological UniversityChengdu 611730China

Dear Editor,This letter is concerned with the distributed localization issue for wireless sensor networks subject to deception *** is assumed that malicious nodes randomly launch attacks to tamper the ranging information between *** order to accommodate the effects of deception attacks,a trust assessment-based distributed localization algorithm is *** with data fusion of barycentric coordinates,our algorithm can achieve accurate ***,numerical simulations are given to validate the effectiveness of the proposed localization algorithm.

关键词： wireless concerned networks

Remaining Useful Life Prediction for a Multi-stack Solid Oxide Fuel Cell System with Degradation Interactions

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CSEE Journal of Power and Energy Systems 2022年第4期8卷 1207-1214页

作者： Xiaojuan Wu Liangfei Xu Yang Huang Danan Yang Junhao wang houjun wang Xi Li School of Automation Engineering University of Electronic Science and Technology of ChinaChengdu 610054China State Key Lab of Automotive Safety and Energy School of Vehicle and MobilityTsinghua UniversityBeijing 100084China School of Artificial Intelligencei and Automation Key Laboratory of Image Processing and Intelligent Control of Education MinistryHuazhong University of Science and TechnologyWuhan 430074China

Due to the constraints of manufacturing and materials,high-power plants cannot rely on only one solid oxide fuel cell stack.A multi-stack system is a solution for a highpower system,which consists of multiple fuel cell stacks.A short lifetime is one of the main challenges for the fuel cell before largescale commercial applications,and prognostic is an important method to improve the reliability of fuel *** from the traditional prognostic approaches applied to single-stack fuel cell systems,the key problem in multi-stack prediction is how to solve the correlation of multi-stack degradation,which can directly affect the accuracy of *** response to this difficulty,a standard Brownian motion is added to the traditional Wiener process to model the degradation of each stack,and then the probability density function of the remaining useful life(RUL)of each stack is ***,a Copula function is adopted to reflect the dependence between life distributions,so as to obtain the remaining useful life for the whole multi-stack system.1 The simulation results show that compared with the traditional prediction model,the proposed approach has a higher prediction accuracy for multi-stack fuel cell systems.

关键词： Degradation interaction multi-stack remaining useful life(RUL) solid oxide fuel cell(SOFC)

Changes of norepinephrine and tumor necrosis factor in submandibular gland of rats with sympathetic nerve injury and the protective effect of 17 beta-estradiol

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Neural Regeneration Research 2006年第4期1卷 325-327页

作者： Yagao Feng Suya Deng Zhenqi Liu Min Hu houjun Yan Qiusheng wang Department of Hand Surgery the 252 Hospital of ChinesePLA Baoding 071000 HebeiProvince China

BACKGROUND： Recent researches have indicated that estrogen has extensive neuroprotective effects. So some studies designed ovariectomized animal models and administrated with estrogen, so as to verify its neuroprotective effects. OBJECTIVE： To observe the effect of 17 beta-estradiol on the content of norepinephrine （NE） and level of tumor necrosis factor （TNF） in submandibular glands of rats with sympathetic nerve injury, and analyze the dose-dependence and pathway of action. DESIGN： A randomized control animal study SETTINGS： Department of Hand Surgery, the 252 Hospital of Chinese PLA; Department of Hand Surgery Union Hospital affiliated to Tongji Medical College, Huazhong University of Science and Technology. MATERIALS： Fifty healthy female Wistar rats were randomly divided into 5 groups with 10 rats in each group： sham-operated group, ovariectomy＋6-OHDA＋saline group, ovariectomy＋6-OHDA＋17β-estradiol 50, 200 and 500 μg/kg groups. METHODS： The experiments were carried out in Tongji Medical College, Huazhong University of Science and Technology between October 2005 and March 2006. Bilateral ovaries were only exposed but not resected for the rats in the sham-operated group, but bilateral ovaries were resected in all the other groups. In the ovariectomy＋6-OHDA＋176-estradiol 50, 200 and 500 μg/kg groups, the rats were administrated with intraperitoneal injection of 6-OHDA （8 mg/kg）, and then immediately given 176-estradiol of corresponding dosages respectively, once a day for 10 days continuously. Rats in the sham-operated group and ovariectomy＋6-OHDA＋saline group were administrated with saline of the same volume. After administration, 5 rats in each group were killed to determine the NE contents in bilateral submandibular glands with high performance liquid chromatography-electrochemical detector （HPLC-ECD）, and the other 5 rats were used to determine the TNF levels in submandibular glands with enzyme-linked immunosorbant assay. MAIN OUTCOME MEASURES： The

关键词： Changes of norepinephrine and tumor necrosis factor in submandibular gland of rats with sympathetic nerve injury and the protective effect of 17 beta-estradiol NGF

基于输出电压和电源电流协同分析的故障诊断方法

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仪器仪表学报 2013年第8期34卷 1872-1878页

作者：马岚王厚军电子科技大学自动化工程学院成都611731

提出了基于输出电压和电源电流协同分析的模拟电路故障诊断新方法。由于不同故障对输出电压和电源电流谐波频谱的幅度和相位的敏感程度不同,因此使用该方法可以有效地检测到灾难型故障和参数型故障,并且该方法对传统方法无法检测的时延... 详细信息

提出了基于输出电压和电源电流协同分析的模拟电路故障诊断新方法。由于不同故障对输出电压和电源电流谐波频谱的幅度和相位的敏感程度不同,因此使用该方法可以有效地检测到灾难型故障和参数型故障,并且该方法对传统方法无法检测的时延类故障依然有效,在协同分析过程中分别采用欧式距离和马氏距离作为灾难型故障和参数型故障检测的判别依据,并且文中分析了由于输入激励不同、分析谐波次数不同所导致的故障覆盖率问题。与基于输出电压的分析方法相比,基于输出电压和电源电流协同分析的方法具有更高的故障覆盖率。

关键词：模拟电路灾难型故障参数型故障欧式距离马氏距离

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动态采集过程的系统模型和评价方法研究

仪器仪表学报 2012年第1期33卷 42-48页

作者：张沁川王厚军电子科技大学自动化工程学院成都611731

波形捕获率是数字存储示波器的主要指标,它代表了系统在单位时间内捕获波形的能力。但对于一个实际的采集系统而言,其定义过于粗略,不能够准确地衡量和评价采集系统的动态性能。通过建立非均匀的动态采集模型,并分析被测信号频率与采集... 详细信息

波形捕获率是数字存储示波器的主要指标,它代表了系统在单位时间内捕获波形的能力。但对于一个实际的采集系统而言,其定义过于粗略,不能够准确地衡量和评价采集系统的动态性能。通过建立非均匀的动态采集模型,并分析被测信号频率与采集系统最小死区时间的关系,给出了评价数据采集系统性能的新指标:平均波形捕获率、最大波形捕获率和最小波形捕获率。在此基础上进一步提出采用分段测量平均波形捕获率的方法来评价采集系统平均性能,并在实际系统中进行了验证,给出了测试结果。

关键词：数字存储示波器波形捕获率死区时间动态采集模型数据缓存

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一种生物机器人遥控导航系统

机器人 2012年第3期34卷 369-374页

作者：张典高昕王厚军电子科技大学自动化工程学院四川成都611731

给出了一种生物机器人遥控导航系统,通过刺激大鼠脑部特定部位实现对大鼠的导航控制.系统主要包括:无线参数发射装置和植入式神经刺激系统两部分.发射装置主要由单片机(C8051F330)、无线调频发射芯片(QN8027)和功率放大电路组成,神经刺... 详细信息

给出了一种生物机器人遥控导航系统,通过刺激大鼠脑部特定部位实现对大鼠的导航控制.系统主要包括:无线参数发射装置和植入式神经刺激系统两部分.发射装置主要由单片机(C8051F330)、无线调频发射芯片(QN8027)和功率放大电路组成,神经刺激系统由单片机(C8051F330)、无线调频接收芯片(QN8025)、模拟开关和植入式电极组成.植入式刺激系统采用表贴原件焊接,体积为20mm×15mm×3mm,质量为6g(含可充电锂电池3g).大鼠内侧前脑束(MFB)区单侧和丘脑腹后外侧核(VPL)左右双侧被选中作为刺激神经位点,每个神经位点植入1对电极.每对电极作为1个通道与神经刺激系统相连,可以通过无线发射装置实时调节每个通道的电流刺激参数.实验结果表明:适当的电流刺激大鼠MFB区可以实现对大鼠的虚拟奖励使之向前行走,适当的电流刺激VPL区可以控制大鼠左转或右转.

关键词：生物机器人双相恒流脉冲遥控系统