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41.
为了解决内部结构日益复杂的片上网络系统故障测试的问题,在研究3×3 2D-Mesh体系结构的NoC系统、边界扫描测试技术和资源节点故障类型的基础上,以FPGA为核心器件设计边界扫描测试系统。完成了数据采集、频率计、放大器、SRAM、IEEE1500 Wrapper等资源节点电路以及资源节点边界扫描链路的接口电路设计,并利用测试软件、信号发生器、万用表和数字示波器,通过边界扫描链路完成对整个硬件设计的测试。测试结果表明该设计性能稳定,为研究NoC系统的边界扫描测试技术提供了硬件平台。 相似文献
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为了对海水痕量营养盐与重金属进行测定,基于FCS的设计思想,采用流动注射分光光度法研制了具有自适应外界设备、快速组建多种仪器及全数字化通信等特点的软硬件一体化的通用测定平台。平台以ARM(S3C2416)处理器为核心,Linux为操作系统,LCD作为人机交互显示,触摸屏或者USB鼠标完成输入控制,构成完整的嵌入式工控机系统;采用CAN总线并制定CAN应用层协议管理设备,提高了系统的可靠性及抗干扰能力。实际测试和应用证明,该平台自动化程度高,通用性、重用性及可扩展性均较强,可组建成亚硝氮、硝氮、氨氮、活性磷、铁等多种痕量元素的实验室、船载和原位分析系统,检测限为nmol/L级别。平台对样品的测试准确度与商品专用仪器无显著性差异。 相似文献
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《Arabian Journal of Chemistry》2022,15(12):104325
The abuse and contamination of antibiotics have long been a hot issue of global concern. On the basis of inner filter effect (IFE), this article established the fluorescence detection system of a mixture of Rutin-AuNPs and 7-hydroxycoumarin, realizing the rapid and sensitive detection of etimicin. The system was also successfully applied to actual samples through a smartphone sensing platform. Due to the antioxidant property of rutin, Rutin-AuNPs were green synthesized with uniform particle size, good monodispersity, and favorable stability. As a good fluorescent quencher, Rutin-AuNPs could effectively quench the fluorescence of 7-hydroxycoumarin based on IFE with a quenching percent of 89.81 %. However, etimicin could bind tightly to the surface of Rutin-AuNPs through charge attraction, Au-N bond, and affinity between sugars, leading to the replacement of 7-hydroxycoumarin. In addition, one or more of the above effects caused aggregation of Rutin-AuNPs, leading to fluorescence recovery rapidly. A linear response between the fluorescence system and etimicin was reasonably established with detection limits as low as 0.12 μM. This system was successfully applied to real sample detection. Moreover, the great potential smartphone sensing platform was also built for practical application owing to its advantages of digitalization and portability. 相似文献
45.
针对石化厂区在生产过程中可能发生有毒气体泄露带来的生产安全问题,构建了石化厂区有毒气体在线监测平台。该平台是由PC监控中心、网络监控中心、ARM便携式终端、安卓手机客户端组成。实现对石化厂区中有毒气体及环境参数的实时、在线监测和预警,使生产管理人员掌握石化厂区的有毒气体实时动态信息,对可能引发危险事故的因素及时排除,把危险控制在始发阶段,以实现化工生产的安全、持续、高效进行。测试结果表明该平台能实现所设计的各项功能,并具有良好的稳定性、安全性和实用性。 相似文献
46.
为了实现漆包机生产的远程监控,设计了一款基于Web的实时漆包机远程监控平台。该平台使用模块化,可扩展的设计方案,采用了Spring MVC的后台Web应用程序框架,基于Modbus协议的数据交互,Ajax方式的网络数据异步提交以及无刷新的图表显示技术。传统的监控平台只能通过以太网在企业内部访问,而该平台可接入互联网,可实现随时随地通过电脑及或者移动终端对生产设备各部分的温度点、电机风机转速、耗电量统计的实时监视,对温度的上下限及电机转速进行远程控制,接收设备状态异常的实时报警,数据存储分析。实验测试表明,该平台的实时性和稳定性均能达到车间生产的要求。 相似文献
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Xinsheng Liu Lei Zhao Bin Miao Zhiqi Gu Jin Wang Huoxiang Peng Jiande Li Wei Sun Jiadong Li 《Electroanalysis》2020,32(2):422-428
Biosensors based on field‐effect transistor (FET) structures have attracted considerable attention because they offer rapid, inexpensive parallel sensing and ultrasensitive label‐free detection. However, long‐term repeatable detection cannot be performed, and Ag/AgCl reference electrode design is complicated, which has hindered FET biosensors from becoming truly wearable health‐monitoring platforms. In this paper, we propose a novel wearable detection platform based on AlGaN/GaN high‐electron‐mobility transistors (HEMTs). In this platform, a sweatband was used to continuously collect sweat, and a pH detecting unit and a potassium ion detecting unit were formed by modifying different sensitive films to realize the long‐term stable and repeatable detection of pH and potassium ions. Experimental data show that the wearable detection platform based on AlGaN/GaN HEMTs has good sensitivity (pH 3–7 sensitivity is 45.72 μA/pH; pH 7.4–9 sensitivity is 51.073 μA/pH; and K+ sensitivity is 4.94 μA/lgαK+), stability (28 days) and repeatability (the relative standard deviation (RSD) of pH 3–7 sensitivity is 2.6 %, the RSD of pH 7.4–9 sensitivity is 2.1 %, and the RSD of K+ sensitivity is 7.3 %). Our newly proposed wearable platform has excellent potential for predictive analytics and personalized medical treatment. 相似文献
49.
In the fields of biocomputing and biomolecular, DNA molecules are applicable to be regarded as data of logical computing platform that uses elaborate logic gates to perform a variety of tasks. Graphene oxide (GO) is a type of novel nanomaterial, which brings new research focus to materials science and biosensors due to its special selectivity and excellent quenching ability. G-quadruplex as a unique DNA structure stimulates the intelligent application of DNA assembly on the strength of its exceptional binding activity. In this paper, we report a universal logic device assisted with GO and G-quadruplex under an enzyme-free condition. Integrated with the quenching ability of GO to the TAMRA (fluorophore, Carboxytetramethylrhodamine) and the enhancement of fluorescence intensity produced by the peculiar binding of G-quadruplex to the NMM (N-methylmesoporphyrin IX), a series of basic binary logic gates (AND. OR. INHIBIT. XOR) have been designed and verified through biological experiments. Given the modularity and programmability of this strategy, two advanced logic gates (half adder and half subtractor) were realized on the basis of the same work platform. The fluorescence signals generated from different input combinations possessed satisfactory results, which provided proof of feasibility. We believe that the proposed universal logical platform that operates at the nanoscale is expected to be utilized for future applications in molecular computing as well as disease diagnosis. 相似文献
50.
基于FPGA的ARM SoC原型验证平台设计 总被引:2,自引:0,他引:2
基于FPGA的验证平台是SoC有效的验证途径,在流片前建立一个基于FPGA的高性价比的原型验证系统已成为SoC验证的重要方法。ARM嵌入式CPU是目前广泛应用的高性价比的RISC类型CPU核,文中主要描述了以FPGA为核心的ARM SoC验证系统的设计实现过程,并对SoC设计中的FPGA验证问题进行了分析和讨论。 相似文献