Elevator Group Control Algorithm Research and Control Program Implementation Based on Fuzzy Neural Network with Four-layer Structure

为提高电梯群控系统的载客效率,减少系统运行能耗,提高运行稳定性,在传统模糊神经网络算法的原理上,设计了基于电梯群控模糊规则的四层模糊神经网络算法,确定四层模糊神经网络结构,定义模糊规则,测算隶属数值,推导隶属度函数,并且基于Matlab提出算法检验方案,给出验证结果。最后采用结构化编程思路在PLC中实现控制程序,并提出可变响应闭环的程序实现方式。In order to improve passenger carrying efficiency of the elevator group control system, reduce system energy consumption and improve the stability of the operation, a four-layer neural network algorithm based on the algorithm principle of tradi- tional fuzzy neural network is designed. The implementation includes determining four fuzzy neural network structure, defining the fuzzy rules, calculating the membership value, deriving the membership function and presenting the results through Matlab program. Finally, elevator control program is designed through the structured programming method in PLC and a variable response of the closed-loop programming method is proposed.青年科学基金项目“发展适用于肿瘤细胞实时决速拉曼成像的光谱信号处理方法”（编号：21503171）资助

A Fast Baseline Correction Method for Raman Spectroscopy Based on Comparison

拉曼光谱成像技术是基于拉曼散射效应所开发的一项现代检测技术,在现代生产、科学研究过程中使用非常广泛。拉曼光谱信号受荧光效应和仪器等方面的影响,往; 往会产生基线漂移,严重影响对信号特征的进一步提取。因此,必须对拉曼光谱信号进行基线校正。传统的基线校正方法,只针对单一光谱信号,计算量较大,在处; 理由大量拉曼信号组成的成像数据时,耗时较长且效果不佳。该文提出一种基于临近比较的快速基线校正方法,根据在相同背景下采集的光谱之间的相关性,实现快; 速基线校正,提高了拉曼成像数据的处理速度。Raman imaging is a kind of modern testing technology based on Raman; scattering,which has been widely applied in manufacturing and scientific; research. However, due to the fluorescent effect and instruments drift,; the baseline shift could easily occur, which has a strong impact on the; feature extraction of the Raman signals. Therefore,the baseline; correction is necessary and inevitable in the signal processing of Raman; spectra. The traditional baseline correction methods can only correct; the Raman spectrum one by one, so once a large amount of Raman imaging; signals have to be processed, the processing time is too long to accept.; In this paper, the baseline correction base on comparison which; considers the correlation between the Raman spectra and the same; background is proposed to realize the fast baseline correction and; improve the processing speed of Raman imaging data

Design of Raman spectroscopy measurement system based on shifted excitation method using two laser diodes with different wavelengths

拉曼光谱检测常常受到荧光干扰,而移频激发拉曼差分光谱法(SERDS)是一种有效抑制拉曼光谱荧光背景的方法。基于该方法,采用两个波长相近、基于体布拉格光栅技术的固定波长激光器,设计了一套拉曼光谱测试系统。通过控制激光器的功率和温度,保证了输出波长的稳定性。采用高灵敏度的薄型背照式面阵CCD,设计了光谱数据采集光路和电路。同时,在软件上实现了差分光谱的三种重构算法,即简单积分算法、带数值插值的简单积分算法和多重约束解卷积算法。在实验中,利用文中系统对强荧光背景的某品牌香油进行了拉曼光谱测量,分别采用这三种算法处理差分光谱进行光谱重构,并对比了重构效果。实验结果表明,设计的系统能够有效抑制荧光对拉曼光谱检测的影响。Raman detection is often disturbed by fluorescence background, while Shifted Excitation Raman Difference Spectroscopy(SERDS)is an effective method for fluorescent suppression on Raman spectroscopy.Based on this method, a Raman spectroscopy measurement system was designed using two closely space fixed-wavelength laser diodes stabilized with the Volume Bragg Gratings. The output wavelength of laser diodes was stabilized by manipulating their power and temperature. The light path and circuit of spectral data acquisition were designed with back-thinned area array CCD with high sensitivity. Besides, the three different reconstruction algorithms of the difference spectrum, namely simple integration algorithm, simple integration with data interpolation algorithm and multiple energy constraint iterative deconvolution algorithm could be realized through software of this system. The Raman spectra of sesame oil of some brand in the presence of a highly fluorescent were measured with this system and then the spectra reconstructed with three different algorithms to process the difference spectrum respectively were compared.Experimental results show that the system designed in this paper can effectively reject the effect of fluorescence to the Raman spectroscopy measurement.国家重大科学仪器设备开发专项(2011YQ03012417

Optical System for Asymmetrical Crossed Czerny-Turner Raman Spectrometer with High Luminous Flux

为克服分立式便携拉曼光谱仪光通量低的缺点,设计了一种集拉曼探头光路与分光系统于一体的光学系统。探头光路采用大数值孔径的非球面透镜实现样品的有效激发和信号的高效收集,通过胶合透镜组缩小会聚光路尺寸、消除轴向色差。分光系统基于交叉非对称Czerny-Turner结构,为获得期望的光谱分辨率和光谱范围,建立了分光系统光谱分辨率及光谱范围与交叉非对称Czerny-Turner结构参数的关系。由测得的汞灯谱图可知,分光系统的光谱分辨率优于6 cm~(-1)(0.37 nm),光谱范围为790~950 nm(200~2000 cm~(-1))。将设计的光学系统对CCL4进行测试,实验结果表明在相同积分时间内由这种整体式的光学系统检测到的CCL4光谱谱峰强度是用商业探头通过光纤连接分光系统检测到的近3倍,验证了光学系统设计的合理性。To overcome the low luminous flux in separated portable Raman spectrometer, an optical system embodies the probe of Raman spectrometer and monochromator is designed. An aspherical lens with high numerical aperture is used to obtain the effective excitation of sample and the efficient collection of signal in the optical system of the probe. A cemented lens group is used to minish the size of converging path and eliminate chromatic aberration.The monochromator is based on asymmetrical crossed Czerny-Turner structure. For the purpose of achieving desired spectrum resolution and spectrum range, the relationship between the spectrum resolution and spectrum range of the monochromator and the structural parameters of the asymmetrical crossed Czerny-Turner system is established. According to the tested spectrogram of mercury lamp, the spectrum resolution of the monochromator is better than 6 cm~(-1)(0.37 nm), and spectrum range is 790~950 nm(200~2000 cm~(-1)). A sample of CCL4 is introduced to examine the performance of the optical system, the experimented results demonstrate that the peak intensity of spectrogram of CCL4 measured by this incorporative optical system is almost three times as high as that using a commercial probe couples to the monochromator, which verifies the rationality of the design of the optical system.国家自然科学基金(21503171);; 中央高校基本科研业务费项目(20720150091、20720150094);; 福建省高端装备制造协同创新中心资

Design of Raman spectroscopy measurement system based on SHINERS

基于壳层隔绝纳米粒子增强技术,开发了一种新型的等离激元拉曼光谱测试系统,该系统能够有效地提高被测物质的拉曼反射信号强度。壳层隔绝纳米粒子增强技术采用包裹了极薄的二氧化硅或者氧化铝壳层的单层金纳米粒子,能够产生较强的表面增强效应。整个测试系统的硬件部分主要包括双处理器(ArM和dSP)主控板、半导体激光光源、光谱仪、光纤探头和粒子施加装置;软件部分能够自动获取被测物质的拉曼谱图。这里,粒子施加装置用于自动地将壳层隔绝纳米粒子施加到被测样本中。在实验中,将测试系统用于检测食品违禁添加物三聚氰胺和孔雀石绿,以验证壳层隔绝纳米粒子增强拉曼光谱技术。实验结果表明,该测试系统具有较高的测试灵敏度和较短的测试时间,广泛地适用于食品安全中痕量物质快速检测。In this paper,the Raman spectroscopy mea surement system was presented,where Shell isolated Nanoparticle Enhanced Raman Spectroscopy(SHINERS) technique was used to amplify the Raman signal.This technique used gold nanoparticles coated with a thin,uniform,fully enclosed and optically transparent shell of silica or alumina so that the gold core generated a large surface enhancement.Based on this technique,the hardware framework of this measurement system was mainly composed of double central control chips(ARM and DSP),a laser diode source,a spectrometer,a fiber probe and a nanoparticle giving device;and the software of this system can achieve the Raman spectrogram automatically.The giving device was used to spread the SHINERS particle into the samples for improving automation.The experiments were performed to detect the food added melamine and malachite green for verifying the effectiveness of SHINERS.The results show that the measurement system is of high detection sensitivity and short testing time effectively,which can be widely adopted in the rapid detection of trace substances in food safety.国家重大科学仪器设备开发专项(2011YQ03012417

Thermal performance testing for high power light-emitting diode based on voltage-current characteristics with pulse injection

热学特性是影响功率型lEd光学和电学特性的主要因素之一,设计了一套基于脉冲式u-I特性的功率型lEd热学特性测试系统,可以测试在不同结温下lEd工作电流与正向电压的关系,从而获得lEd的热学特性参数。该系统通过产生窄脉冲电流来驱动lEd,对其峰值时的电压电流进行采样,同时控制和采集lEd的热沉温度,从而获得不同温度下lEd的u-I特性曲线。与其他u-I测试系统相比,文中采用了窄脉冲(1μS)工作电流,lEd器件Pn结区处于发热与散热的交替过程,不会造成大的热积累,大大提高了测量精度。实验中,对某功率型lEd进行了测试,获得了该器件的电压、电流和结温特性曲线,并利用b样条建立该器件的u-I-T模型,进而实现了对其结温的实时在线检测。Thermal performance is one of the main factors which affect the optical and electrical performance of high power LED.The thermal performance testing system for high power LEDs based on voltage-current characteristics with pulse injection was designed in this paper, which can test the relationship between the operating current and forward voltage of LED under different junction temperatures, thereby obtaining LED thermal characteristics parameters.The system worked by generating a controlled narrow pulse current to drive the LED, and sampling the peaks of voltage and current of LEDs with LED heat sink temperature control and acquisition, thereby obtaining the voltage-current characteristic curve in different junction temperatures.Compared with other voltage-current testing systems, the designed system adapts the narrow pulse duty cycle(1 μs), so the PN junction of LED devices is always in the process of alternately heating and cooling, which can avoid large heat accumulation and greatly improve the accuracy of measurement.In the experiment, a power LED device was tested by the system and the voltage-current-temperature curve was obtained.Then the B-spline based U-I-T model of the LED was established, so the real-time online detection of LED device was achieved.国家自然科学基金(61102030

类泛素蛋白及其中文命名

泛素家族包括泛素及类泛素蛋白,约20种成员蛋白.近年来,泛素家族领域取得了迅猛发展,并已与生物学及医学研究的各个领域相互交叉.泛素家族介导的蛋白质降解和细胞自噬机制的发现分别于2004和2016年获得诺贝尔奖.但是,类泛素蛋白并没有统一规范的中文译名. 2018年4月9日在苏州召开的《泛素家族介导的蛋白质降解和细胞自噬》专著的编委会上,部分作者讨论了类泛素蛋白的中文命名问题,并在随后的\"泛素家族、自噬与疾病\"(Ubiquitinfamily,autophagy anddiseases)苏州会议上提出了类泛素蛋白中文翻译草案,此草案在参加该会议的国内学者及海外华人学者间取得了高度共识.冷泉港亚洲\"泛素家族、自噬与疾病\"苏州会议是由美国冷泉港实验室主办、两年一度、面向全球的英文会议.该会议在海内外华人学者中具有广泛影响,因此,参会华人学者的意见具有一定的代表性.本文介绍了10个类别的类泛素蛋白的中文命名,系统总结了它们的结构特点,并比较了参与各种类泛素化修饰的酶和它们的生物学功能.文章由45名从事该领域研究的专家合作撰写,其中包括中国工程院院士1名,相关学者4名,长江学者3名,国家杰出青年科学基金获得者18名和美国知名高校华人教授4名.他们绝大多数是参加编写即将由科学出版社出版的专著《泛素家族介导的蛋白质降解和细胞自噬》的专家

Design of Data Collection System Based on Lead Accuracy Testing of Screw

针对丝杆导程精度动态检测的需要,研制了一套高速同步采集模拟信号及光栅信号的数据采集系统,该系统利用fPgA作为核心器件实现数据采集,通过PCI总线完成硬件电路与计算机的通信,最终由计算机通过动态采集技术获得评价数据。数据采集系统可采集20 kHz的光栅尺输出信号,已经成功应用于某型号丝杆导程精度动态检测装置,该检测装置最高可测量4级丝杆,实现了预期的测量要求。According to the lead accuracy dynamic testing of screw,a set of high-speed data collection system which can collect the analog signal and the grating signal synchronously is developed.The system uses FPGA as the core of the device,the hardware communicates with the computer by using the PCI bus,eventually the computer obtaines the evaluating data by the dynamic data collection technology.The data collection system can collect the 20 kHz grating signal and has been successfully applied in a lead accuracy dynamic testing device of screw,which can measure grade 4 screw and achieves the desired requirements.2010年度厦门市科技计划指导性项目(3502Z20109006;3502Z20109007

Infrared Energy Level Lifetime Measurement System by Visible Upconversion Luminescence Detection Based on Double-Pulse Injection LD Module

Er3+的4I 13/2能级寿命的长短对评估Er3+掺杂材料在光通讯波段的应用十分重要。基于980nM双脉冲注入式ld激发下的Er3+激发态吸收上转换发光,测量在不同双脉冲时间间隔下的上转换红光发光强度,再根据上转换红光的发光强度随双脉冲时间间隔的变化关系,推导出了Er3+红外4I 13/2能级寿命的拟合公式,实现了红外能级寿命的可见区测量。因此,结合兼具时间间隔可调和同步脉冲取样的双脉冲注入式ld模块和光电倍增管(r2658),就可以实现所有Er3+红外能级寿命的测量,这是一种十分经济的微秒量级荧光寿命测试系统。The lifetime of Er3+ and 4I13/2 energy level is of very significance for evaluating the application potential of Er3+-doped materials in optical communication.In the present article,based on the Er3+ excited state absorption upconversion(UC) luminescence under 980 nm double-pulse injection LD excitation,the authors detected the red UC luminescence intensity under different time gap between double pulses,then according to the dependence between UC red luminescence intensity and time gap between double pulses,deduced the fitting formula for obtained medial energy level lifetime of Er3+,and actualized the measurement of infrared level lifetime in visible region.So,combining photomultiplier tube(R2658) with double-pulse injection LD module with controllable time gap and synchronous pulse sample,we can obtain all the infrared level lifetime of Er3+,and this is a cost saving lifetime measurement system with μs resolution.国家自然科学基金项目(61102030)资

Design of protection circuit for lithium battery used in electric bicycle

为保证电动自行车锂电池组安全、长寿命的运行,需为其配备专用管理保护电路。为此,针对一款4并10串规格的锂电池组设计了一套保护电路板,采用S-8209A保护芯片,实现了过充电保护、过放电保护、电池充放电平衡、过电流保护、正常带载等功能,已被可靠应用于某款电动自行车的锂电池组中。The lithium battery with superior performance is the development trend of the electric bicycle power,but needs a dedicated protection circuit to work with so as to ensure the safety and long-period operation.In this paper,a protection circuit board including S-8209A was designed for the lithium battery set with 4-parallel and 10-serial connection mode.It achieved the functions of overcharge protection,overdischarge protection,overcharge-overdischarge balance and overcurrent protection.The circuit has been already applied to the electric bikes with the lithium batteries.国家青年基金项目:脉冲注入式功率型LED热学特性及其检测技术(61102030