智能车竞赛中道路的视频识别方案

视频信号的的采集和处理是一个复杂的过程,这需要程序设计者了解视频信号的构成,充分利用复合视频信号中的各种同步信息作为视频信号采集的控制信号,从而完成信号的采集。     

基于CC1110的井下无线传感器监测网络的设计与实现

介绍了一种基于CC1110的矿井下的无线传感器(WSNs)的构建方法,包括传感器节点的硬件构成和网络拓扑结构、协议的设计.该WSNs可实时地对井下的环境参数进行检测,实验证明:系统运行稳定,效果良好.     

无源二线制智能数字显示表的设计与实现

为了解决LCD在黑暗环境下无法显示的问题,设计并开发了无源二线制智能数字显示表。该无源二线制智能数字显示表采用TI公司生产的MSP430FE427单片机进行控制,详细介绍了其工作原理和实现技术。该仪表能够在没有表头以及外接直流电源的情况下,通过显示模块对二线制传感器检测到的工业参数进行显示;具有精度高、配置灵活、稳定性好等特点,适合用作工业现场的显示单元。     

多点测温与长线传输在分布式测温系统中的研究

针对分布式温度测量系统中多点温度测量问题,设计了长线传输电路.详细阐述了利用一个I/O端口连接多个传感器来编制公用程序的方法,以实现多个温度测量的方法,较好地解决了多个I/O口多点测温的设计问题;给出了单总线温度传感器多点测温硬件连接方法,解决了数字温度传感器在长线传输中温度的正确读取以及电路设计的关键问题.     

一种多核Cache低功耗动态混合划分算法研究

随着片上集成核数的增多,片上Cache的面积也越来越大,同时消耗的能耗也越来越多.因此,面向低功耗的Cache划分方法不可避免地成为了Cache划分中需要考虑的一个重点.然而,目前的Cache划分算法主要是面向公平性、性能或者QoS的,很少考虑到功耗问题.面向低功耗的混合划分方法(LPHP)利用程序运行的局部性原理,将在L2 Cache中访问差异度较大的线程作为一个划分单位,通过私有和共享两种资源分配方式相结合来实施Cache划分,从而实现在运行同一个应用时,使用更少的Cache列,关闭剩余列,达到降低系统功耗的目的.LPHP通过减少在使用的Cache列来达到降低功耗的目的,符合当前多核发展低功耗的趋势.     

用于成品率分析芯片的LVS方法

研究成品率分析芯片的特点和设计流程,提出适用的LVS方法。该方法结合传统的LVS及形式验证,能够解决成品率分析芯片中违反设计规则、版图和电路图不匹配等特殊结构的验证问题。将该方法与传统验证流程相融合,用于成品率分析芯片的设计和验证。实验结果证明,成品率分析芯片验证流程具有正确性和稳定性。     

Thin-film electrode based droplet detection for microfluidic systems

We report on a droplet-producing microfluidic system with electrical impedance-based detection. The microfluidic devices are made of polydimethylsiloxane (PDMS) and glass with thin film electrodes connected to an impedance-monitoring circuit. Immiscible fluids containing the hydrophobic and hydrophilic phases are injected with syringe pumps and spontaneously break into water-in-oil droplet trains. When a droplet passes between a pair of electrodes in a medium having different electrical conductivity, the resulting impedance change signals the presence of the particle for closed-loop feedback during processing. The circuit produces a digital pulse for input into a computer control system. The droplet detector allows estimation of a droplet's arrival time at the microfluidic chip outlet for dispensing applications. Droplet detection is required in applications that count, sort, and direct microfluidic droplets. Because of their low cost and simplicity, microelectrode-based droplet detection techniques should find applications in digital microfluidics and in three-dimensional printing technology for rapid prototyping and biotechnology.     

Micro-piezoelectric immunoassay chip for simultaneous detection of Hepatitis B virus and α-fetoprotein

In this paper, a piezoelectric diaphragm-based immunoassay chip was developed to simultaneously detect anti-Hepatitis B virus (HBV) and anti-alpha-fetoprotein (AFP). The chip was fabricated by micro-machining technology and consists of eight individual circular sensors with a diameter of 800 μm. Hepatitis B surface antigen (HBsAg), Hepatitis C core antigen (HBcAg) and AFP as the probe molecules were immobilized on different sensing spots on the chip. A solution containing anti-HBsAg and anti-AFP was applied into the reaction chambers in all sensors of the chip, and significant frequency shifts were only observed in the sensors with HBsAg and AFP for immunoassay detection. The fluorescence image further confirmed the successful detection of anti-HBsAg and anti-AFP. The total assay time was less than 2 h. The frequency shift-based calibration curves show a detection limit of 0.1 ng/ml and a dynamic detection range of 0.1-10,000 ng/ml for both anti-HBsAg and anti-AFP, respectively, thus demonstrating that the developed piezoelectric immunoassay chip has potential applications for rapid, specific, sensitive, and multiple detections of HBV.     

超声波生物处理技术中多路体积分数检测器的设计

在多频带处理组组合搜索、捕捉、锁定最佳处理频率的运行策略下,基于ATmega16单片机,设计实现了一种用于生物液处理的多路体积分数温度检测器,并在实验中得以实现,为改善现有超声波生物处理技术提供了帮助.就其硬件电路,软件处理,以及数据通信需求的相关研究测试表明:其支持多路数据检测,统筹数据收发等各项功能满足自动化、最优...     

基于低频正弦波励磁方式的电磁流量计设计

提出了一种采用低频正弦波励磁方式的电磁流量计的设计方法,并采用新型的信号处理方法使其比传统的信号处理方法更加简便可靠.实验表明:低频正弦波励磁方式在小流速阶段,可以减弱微分干扰的影响,提高流量计零点稳定性和测世准确度.