SYSTEMATIC METHOD TO GENERATE NEW IDEAS IN FUZZY FRONT END USING TRIZ

The obstacle for idea generation in fuzzy front end （FFE） is difficult to apply knowledge in different fields for designers. Theory of inventive problem solving TRIZ and computer-aided innovation systems （CAIs） which are TRIZ-base software systems with a knowledge base provide a framework for knowledge application in different fields. The major methods in TRIZ are selected, which have four types. The problems to be solved for each method are summarized and mapping from the problems to the methods is given. Systematic method with eight paths to integrate the methods and problems is formed. A case study shows the idea generation in FFE using the integrated method step by step.

Reconfigurable Ultrasonic Testing System Development Using Programmable Analog Front-End and Reconfigurable System-on-Chip Hardware

Ultrasonic testing systems have been extensively used in medical imaging and non-destructive testing applications. Generally, these systems aim at a particular application or target material. To make these systems portable and more adaptable to the test environments, this study presents a reconfigurable ultrasonic testing system (RUTS), which possesses dynamic reconfiguration capabilities. RUTS consists a fully programmable Analog Front-End (AFE), which facilitates beamforming and signal conditioning for variety of applications. RUTS AFE supports up to 8 transducers for phased-array implementation. Xilinx Zynq System-on-Chip (SoC) based Zedboard provides the back-end processing of RUTS. The powerful ARM embedded processor available within Zynq SoC manages the ultrasonic data acquisition/processing and overall system control, which makes RUTS a unique platform for the ultrasonic researchers to experiment and evaluate a wide range of real-time ultrasonic signal processing applications. This Linux-based system is utilized for ultra-sonic data compression implementation providing a versatile environment for further development of ultrasonic imaging and testing system. Furthermore, this study demonstrates the capabilities of RUTS by performing ultrasonic data acquisition and data compression in real-time. Thus, this reconfigurable system enables ultrasonic designers and researchers to efficiently prototype different experiments and to incorporate and analyze high performance ultrasonic signal and image processing algorithms.

Design of an Analog Front End for Passive UHF RFID Transponder IC

This paper introduces a high-performance analog front end for a passive UHF RFID transponder IC, which is compatible with the ISO/IEC 18000-6B standard,operating at the 915MHz ISM band with a total supply current consumption less than 8μA. There are no external components, except for the antenna. The passive IC＇s power supply is taken from the energy of the received RF electromagnetic field with the help of a Schottky diode rectifier. The RFID analog front end includes a local oscillator, clock generator, power on reset circuit, matching network and backscatter,rectifier,regulator, and AM demodulator. The IC, whose reading distance is more than 3m,is fabricated with a Chartered 0.35μm two-poly four-metal CMOS process with Schottky diodes and is EEPROM supported. The core size is 300μm × 720μm.

An Analog Front End for Recording Neuronal Activity in Freely Behaving Small Animals

Extracting characteristic brain signals and simultaneous recording animals behaving could help us to understand the complex behavior of neuronal ensembles. Here, a system was established to record local field potentials (LFP) and extracellular signal or multiple-unit discharge and behavior synchronously by utilizing electrophysiology and integrated circuit technique. It comprised microelectrodes and micro-driver assembly, analog front end (AFE),while a computer (Pentium III ) was used as the platform for the graphic user interface, which was developed using the LabVIEW programming language. It was designed as a part of ongoing research to develop a portable wireless neural signal recording system. We believe that this information will be useful for the research of brain-computer interface.

A Model-Based, Aspiration-Led Decision Support System NY-IEDSS

An AI-aided simulation system embedded in a model-based, aspiration-led decision support system NY-IEDSS is reported. The NY-IEDSS is designed for mid-term development strategic study of the Nanyang Region in Henan, China, and is getting beyond its prototype stage under the decision maker's (the end user) orientation. The integration of simulation model system, decision analysis and expert system for decision support in the system implementation was reviewed. The intent of the paper is to provide insight as to how system capability and acceptability can be enhanced by this integration. Moreover, emphasis is placed on problem orientation in applying the method.

面向便携式野战医疗装备语音交互的小尺寸双麦前端系统设计

目的:针对野战噪声条件下便携式野战医疗装备的语音交互性能受到影响的问题,设计一种小尺寸双麦前端系统。方法:该系统基于最小二乘准则实现小尺寸双麦波速形成,进而实现前端语音增强。系统硬件主要由双麦、信号预处理模块、嵌入式处理器、模拟数字转换器(analog to digital converter,ADC)、数字模拟转换器(digital to analog converter,DAC)、供电模块等组成。其中,双麦采用2个贴片式微机电系统(micro electro mechanical system,MEMS)麦克风,信号预处理模块、ADC、DAC内置在通用音频编码器WM8978中,嵌入式处理器采用STM32F405系列处理器,供电模块采用LM1117电压调节器芯片。系统软件采用KeilμVision4开发软件编译和测试。为验证该系统的性能,进行指向性实验和语音增强实验。结果:指向性实验结果表明,在0.5~2.0 kHz频率范围内,该系统在各频点的指向性一致性较好;语音增强实验结果表明,在枪声、监护仪报警、医疗器皿碰撞3类非平稳噪声条件下,该系统可有效提升语音的音质及识别率。结论:该系统能实现语音增强,可为便携式野战医疗装备的语音交互提供有效的支持。

高频雷达射频前端综合仿真实验设计

在新工科建设背景下,结合最新科研成果,从任务设置、实验设计、教学安排等方面对原有高频雷达仿真实验进行了优化,设计出了一个全新的基于高频雷达射频前端综合仿真实验项目。该项目要求学生根据设计背景凝练指标,自主选择合适结构和器件来完成电路建模、系统仿真、性能评估与优化。实践表明,所设计实验项目具有较好的层次性和灵活性,在形式、内容和体系上能够较好地满足教学要求。

基于Vue.js+Django的大坝安全监测信息管理系统开发

随着大坝安全监测向自动化、智能化和高精度化发展,统一管理监测数据,提升系统的跨平台性、兼容性和易维性已成为提高大坝安全监测信息化管理水平的关键。归纳分析大坝安全监测常用的电阻式、差阻式、振弦式等传感器参数及监测变量信息,设计数据标准化导入模板。基于前后端分离开发模式,采用Vue.js+Django框架,运用RESTful API统一功能接口。开发集多类型数据源的导入、预处理、查询及报表快速生成等功能的信息管理系统,实现监测数据的集中规范化管理。研究成果已应用于某水电站,显著提高了大坝安全监测信息管理的效率,可在类似工程中推广应用。

IP化升级技术增强数字电视前端系统可靠性建设方案

在三网融合背景下,为了进一步提高数字电视的信号传输效率、降低成本,基于IP技术数字电视前端系统的设计,可以增强系统的灵活性和可靠性。基于此,本文介绍了数字电视业务的发展现状,并分析了传统ASI架构与IP架构的数字电视前端系统。重点讨论了IP化后的系统优势,涉及编码、复用、条件接收技术等关键技术,提出了央视数字电视前端系统的IP化升级改造方案,包括系统架构设计和实施方案,旨在为研究人员和工程师提供一个全面的视角,以理解和设计基于IP技术的数字电视前端系统。

宣城发射台中波前端系统标准化改造分析

宣城发射台中波前端系统标准化改造主要包括信号源线路改造、增设供电数据监测以及不间断电源(Uninterruptible Power Supply,UPS)旁路改造。通过优化信号源线路布局,使其更加安全、美观且合理。基于增设的供电数据监测功能,实时掌握供配电与UPS运行状况,在出现异常时及时发出告警。通过UPS旁路改造,确保在UPS系统出现故障或对设备进行检修时能够自动切换到UPS旁路,便于信号源系统故障排查。

基于RBAC模型的前后端分离系统设计与实现

权限管理是现代信息管理系统核心功能之一,能够让用户可以安全访问系统数据,其中基于角色的访问控制模型是常用的一种权限管理模型,其优点是能够灵活地处理角色与权限之间的变化问题,为复杂的权限管理问题提供便利性。另一方面前后端分离技术能够很好地解决前端页面开发和后端服务器功能开发解耦的问题,让分工双方更加注重各自面对的业务问题,减少对开发人员技术门槛的要求,从而大大提高了开发效率。因此采用前后端分离技术实现通用的基于角色的访问控制系统具有一定的实用价值。

输血前置系统在手术室病人术中紧急输血中的应用

目的:初步探讨输血前置系统在保障病人术中紧急输血的及时性和保证手术安全的有效性。方法:采用无线射频识别技术、便携式恒温转运系统、智能血液储存柜,依托智能血液管理系统对输血科到手术室全程血液监测和质量控制,实现医院血液制品前置至手术室,并进行全流程监控。选取我院麻醉手术科一分部输血前置前移系统应用前(2023年1月—5月)与应用后(2023年6月—10月)术中紧急输血各34例病人为研究对象,比较两组取血时间、输血操作时间、血液输注时间符合率和输血不良事件发生率等。结果:输血前置系统实施后,病人术中紧急输血时的取血时间由传统模式的(25.0±8.7)min缩短至(3.0±0.8)min;输血操作时间由(7.5±3.6)min缩短至(5.4±1.0)min;血液输注时间符合率(血液离开冰箱后30 min内输注)由67.6%上升至100.0%,差异均有统计学意义(P<0.05);输血反应发生率由5.9%下降至0。此外,实施前后两组均无输血不良事件发生。结论:输血前置系统实施后,优化术中紧急用血机制,缩短手术室紧急用血等待时间,促进了病人术中及时用血和安全用血,对提升手术安全具有重要意义。

Development of a high-performance RF front end for HEPS 166.6 MHz low-level RF system

Purpose Digital low-level radio frequency(LLRF)system has been proposed for 166.6 MHz superconducting cavities at High Energy Photon Source.The RF field inside the cavities has to be controlled better than 0.03%(rms)in amplitude and 0.03°(rms)in phase.A RF front end system is required to transform the RF signal from the cavity to IF signal before inputting into the digital signal processing(DSP)board,and up-convert the IF signal back to RF to drive the power amplifier.Methods Connectorized off-the-shelf microwave components were used to realize the RF front end system.The local oscillator generation and distribution,choices of main components and design of down-/up-conversion channels have been elaborated in detail with a focus on minimizing nonlinearity and signal interferences among channels with optimized signal distribution loss.Results and conclusions The RF front end has been incorporated with the existing DSP board and tested on a warm 166.6 MHz cavity in the laboratory.Excellent channel isolations and good linearities were achieved on the RF front end system.The RF field inside the cavity was controlled with a residual noise of 0.004%(rms)in amplitude and 0.002°(rms)in phase,well below the HEPS specifications.The sensitivity to ambient environment changes have also been studied and presented in this paper.This demonstrates a first high-performance 166.6 MHz RF front end system and provides valuable insights into HEPS LLRF system development in the future.

基于LabVIEW的模拟前端电压标定系统设计

电池管理系统中模拟前端的电压采集模块的精准采集对汽车预警起着关键性作用,同时目前电压采集模块手动及半自动标定过程中存在操作复杂、效率低和复用性差等问题,针对以上问题设计了一套对模拟前端中的电压采集模块进行标定的系统,通过LabVIEW上位机软件自动控制各仪器设备的方式,完成模拟前端电压采集模块的标定。通过实际测试,系统能够自动标定,实现操作简单、效率提升、高精度和复用性强等目标。

Web前端开发“岗课赛证”融通的课程体系建设研究

随着Web2.0的产生,互联网企业对Web前端开发有了更高层次的要求,Web前端开发工程师这一新兴职业应运而生,社会需求量日益增大。高职高专院校培养的Web前端开发人才具有较好的就业与发展前景,需要通过构建“岗课赛证”的课程体系提升Web前端开发课程的教学水平,以期为社会培养适应职业岗位、具有扎实专业技能和终身学习能力的复合型人才。

以枣阳市为例谈中小城市智能交通管理系统建设

以枣阳市为研究对象,分析了枣阳市道路交通、智能交通建设现状以及存在的问题,深入剖析了此类城市道路交通特征以及交通管理需求,从指挥中心、平台、前端系统三方面提出了具体的智能交通管理系统建设方案。

基于Ant Design Pro的物流系统前端开发与用户体验优化研究

本文探讨了Ant Design Pro在物流系统开发中的应用,特别是其对用户体验和数据可视化的影响。通过采用案例研究方法,分析Ant Design Pro在构建企业级物流系统中的应用。研究发现,Ant Design Pro的一致性设计和丰富的组件库显著提升了开发效率和用户交互体验。此外,其数据可视化组件有效支持了复杂物流数据的呈现和分析。然而,其在性能优化和定制化需求方面面临着挑战。最终,本文提出了一系列基于Ant Design Pro的物流系统开发最佳实践,并对其潜在的改进方向进行了讨论。研究结果为物流行业的信息系统开发提供了实用的指导,并为Ant Design Pro社区贡献了宝贵的实践经验。

基于前端开发框架的舰船运动姿态数据监测系统

利用运动姿态监测结果为舰船可靠航行提供决策依据。为此,设计了基于前端开发框架的舰船运动姿态数据监测系统。系统设施层中,利用MEMS陀螺仪芯片与3轴MEMS加速度计采集舰船运动姿态信息,并将所采集信息传送至业务逻辑层;业务逻辑层利用控制子层和管理子层为用户提供姿态数据监测服务;控制子层中的姿态解算模块,依据传感器信息采集结果,利用卡尔曼滤波算法解算舰船运动姿态信息。基于此,利用Bootstrap的前端开发框架,通过viewport元数据标签完成前端UI设计,为用户提供可视化的人机交互界面,将姿态解算结果利用用户界面层为用户展示。测试结果表明,该系统对舰船航行运动姿态的监测结果与实际结果极为接近,适用于实际工作。

发电机励磁在线监测系统的研制及应用

以分布式新能源为主的主动支撑技术还处于发展阶段,常规发电机的惯量支撑能力仍在发挥重要作用,励磁系统作为其控制核心,直接影响着供电可靠性。本文针对电厂端缺乏监测发电机励磁特性有效措施的现状,研制了发电机励磁在线监测系统。首先,介绍励磁在线监测系统的硬件和软件架构,根据四种主流的通信规约设计励磁监测模型。其次,提出适应多种通信规约的分布式前置采集架构,构建采集通道负载均衡数学模型,实现了励磁信号的分布式采集和集中监视。最后,研发励磁量测动态监视、发电机运行状态预警等功能。所研制的监测系统已在某660MW机组得到成功应用。

基于多方数字签名和认证的毕业论文管理系统设计

为了使线上毕业论文指导意见及毕业答辩的成绩真实可靠,提出一种基于数字签名的毕业论文管理系统。本系统为注册的用户分发代表身份的密钥对,对每次毕业论文的任何修改都附加修改者本人的签名,并在其他用户在异地打开毕业论文的同时验证签名。本系统可以辅助完成在线答辩,保证答辩成绩的真实性和不可否认性。基于数字签名的认证用于毕业论文的管理对规范毕业论文管理过程、实现多方可信的毕业论文成果的共识能起到积极的促进作用。