钢厂铁路运输无人化道口安全监控

钢厂的铁路道口经历了多次升级，由原来道口现场有人值守道口，改为道口现场无人值守的远程集控；再由远程人工操作、自动监控、升级到道口智能化自动运行；实现无人化道口安全监控，为钢厂铁路运输自动驾驶、运输过程无人化奠定基础，保障运输列车通过道口时安全畅通；无人化道口是钢厂铁路无人化运输系统中不可缺少的重要环节。     

铁路道口信号自动防护系统研究与应用

铁路道口是铁路路外事故多发地段,国家铁路和地方铁路目前采用的防护系统尚存在一些问题。经多方调查研究,结合现行可靠设备和开滦煤矿实际,综合利用研究开发一套可以满足需要的铁路道口信号自动防护系统。     

石钢集中道岔平交道口自动报警控制系统

利用无源磁感应技术建立的铁路道口自动报警控制系统,实现了道口的无人值守,解决了石钢站场道岔集中区段内平交道口的交通难题。     

铁路道口铺面安全分析与对策

从厂内铁路道口铺面现状谈起,对铁路道口故障影响因素进行分析;结合厂区道口现状重点阐述铺面材质的利弊和改进效果。目的就是从根本上减少铁路道口铺面设备的故障率,从而确保铁路道口铺面区域内的行车安全。     

武钢铁路道口安全防护系统

简要介绍武钢铁路道口安全防护系统设备组成,详细分析了运输部自行研究制造的电动栏木装置工作原理和技术性能、维修标准以及应用情况,并提出在有人看守道口安装ZK－B型自动报警设备的必要性。     

韶钢道口自动报警装置获专利

韶钢道口自动报警装置获专利最近，国家专利局正式批准，广东韶钢集团公司研制的“铁路平交道口自动报警装置”获得发明专利权。该装置是韶钢运输部助理技师罗东元于１９９１年发明的，经几年来在韶钢的１６处道口应用，证明其有结构简单、易装、易用、易维修、易维护、投...     

橡胶道口板的应用与分析

对钢筋砼道口板铺制的传统式铁路平交道口和新式橡胶道口各自的特点进行了分析，介绍了橡胶道口板在莱钢的应用。     

浅探莱钢铁路道口问题及对策

铁路道口是事故多发地点，针对莱钢铁路道口在安全管理上存在的问题，提出互动互控共同负责管理模式，营造规范的铁路道口行车次序和良好的道口交通环境，减少道口事故，确保安全生产。     

铁路橡胶道口板的分析与应用

对钢筋混凝土道口板铺制的传统式铁路平交道口和新式橡胶道口各自的特点进行了分析，介绍了橡胶道口板在莱钢的成功应用。     

重载铁路道口维修技术探讨

重载化公路铁路平交道口具有载重大、过车频繁、维修频率高的特点。在维修过程中由于需要向公路和铁路两个管理单位要点施工,对行车干扰较大。对传统维修工艺进行改进,以提高道口使用寿命为出发点,提高了道口抗冲击性和稳定性,减小载重车及超载机动车辆对道口的破坏。     

工程建设远程自动化监测系统的研究

随着国家工程建设的飞速发展,相关的安全监测也日益受到重视。传统的监测耗费人力,且无法实现实时掌握基础工程建设安全状况。通过在具体基础工程中埋设相应的监测传感器,并结合数据采集模块、系统软件和远程通信技术,组成远程自动化监测系统,可以有效实现远程操控,解决实时、连续、自动监测、非接触、节省人力等问题。因此,远程自动化监测是工程建设安全监测的发展趋势。     

A randomized study comparing methylprednisolone plus chlorambucil versus methylprednisolone plus cyclophosphamide in idiopathic membranous nephropathy

Recent research on development of the implantable artificial pancreas for treatment of diabetes is reviewed, based on a Medline literature search that focused on glucose sensors, insulin pumps, and pump control systems. To achieve a closed feedback loop, a clinically applicable implantable artificial pancreas requires miniaturization and coordination of three components: an insulin pump, a blood glucose monitor, and a control system. Recent clinical studies have demonstrated that implantable insulin pumps are feasible for satisfactory control of diabetes for over a year, with the major complication being obstruction of the infusion catheter. Research on continuous glucose sensors has predominantly used the glucose-oxidase reaction or near-infrared light spectroscopy. Implantable glucose oxidase sensors have been limited by local factors causing unstable signal output, whereas optical sensors must overcome interference by substances with absorption spectra similar to glucose. Investigators have developed control algorithms in an effort to stabilize operation of the integrated artificial pancreas in the face of variations in sensor output and pump function. The ultimate goals of fully automatic glucose control by an artificial pancreas include prevention or delay of chronic complications of diabetes, lowered risk of hypoglycemia, and less patient inconvenience and discomfort than with multiple daily glucose self-tests and insulin injection. The recent developments of optical glucose sensing, radiotelemetry systems to link pump and sensor, and miniaturization and refinement of insulin pumps are significant steps toward a clinically applicable artificial pancreas.     

高炉热风管系无线位移监测系统的应用及分析

首钢京唐钢铁联合有限责任公司5500m^3高炉热风管系无线位移监测系统,通过安装在热风管系上的无线位移传感器测量管系的伸缩变形,由无线中继器和采集器将监测数据上传给上位机,实现了热风管系伸缩变形的无线自动监测。实际应用效果表明此系统具有较高的灵敏度和准确性,为分析热风管系的安全运行状况提供了客观依据,具有很高的应用和推广价值。     

Biosensors in flow-injection systems for biomedical analysis, process and environmental monitoring

This paper presents the construction of various biosensors using thin-film layers incorporated in flow injection devices, providing automated systems for biomedical analysis, process and environmental monitoring. A urease sensor has been developed in conjunction with a flow injection system for the automatic determination of urea. Use of the spraying immobilization technique gives rise to a response time of a few seconds, which allows sample throughputs up to 200 h-1. With a penicillin biosensor adapted in an appropriate cell detection, on-line measurements of penicillin V in the fermentation broth are achieved during the whole fermentation process; the results are compared with the HPLC method. Linearity, sensitivity and reproducibility of the biosensor are studied with regards to sample dilution in a stirred flow detection cell to provide optimal operating conditions. Measurements without any change in parameters are obtained during the whole fermentation process. Acetylcholinesterase sensors have been used in batch systems for the determination of pesticides, but they require large amounts of substrate. When those enzyme sensors are combined with flow injection systems, only small volumes (100 microliters) of substrate are injected into the carrier stream and an automated system can be obtained for continuous control of water quality.     

选矿厂自动化系统的故障诊断系统

由于选矿厂的恶劣工作环境以及过程参数时变等影响,选矿自动化系统的传感器或执行机构经常出现故障。控制器参数需要定时优化整定。针对这种现状,开发了故障诊断系统,可以实现故障的检测、诊断,给予故障处理提示,同时具备控制器参数自整定的功能。运行结果证明,该系统极大地方便了自动化故障处理,提高了自动化系统的可靠性与可用性,优化了自动调节系统的调节品质,具有推广价值。     

基于传感器信息融合技术的智能隧道监控系统

针对隧道监控系统普遍存在报警可靠性差,联动控制弱及能耗高等问题,提出了基于多传感器信息融合技术的智能隧道监控系统的设计方案。通过在隧道中将数量及类别众多的传感器组建成网络,采用数据层和决策层两级融合策略,全面、准确描述环境对象,实现报警决策的可靠和稳定。根据隧道特点研究联动控制方案及控制算法,利用嵌入式控制技术设计区域控制器,实现隧道安全自动监测控制。     

铝冷轧机开卷机自动上料的设计

本文阐明了铝冷轧机开卷机自动上料应用的目的,列出了自动上料过程中所涉及的主要装置及传感器,叙述了自动上料的工作原理和工作过程,分析了自动上料过程中的设计计算,完整地实现了铝冷轧机开卷机自动上料的设计。     

直流供电系统在城铁试验线中的应用

详细介绍了城市铁路试验线直流供电系统的组成,并针对系统逻辑控制及保护进行分析与论证,从而解决了四个变电站同时或分别向三条大型试验线提供不同种类电压的技术难题,最大限度满足了城市铁路机车车辆调试需要。     

Sexual and nonsexual boundary violations involving psychologists, clients, supervisees, and students: Implications for professional practice.

What is available to psychologists to assist them in identifying or minimizing the damage that can result from inappropriate professional boundary crossings? Frequency data of both sexual and nonsexual boundary violations by psychologists are provided as they occurred with clients, supervisees, and students. The impact of engaging in such relationships on subsequent professional practice is also reported. Data on 18 nonsexual boundary crossings are described, and guidelines for making decisions about crossing accepted professional boundaries are provided. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

模糊控制在位置自动控制中的应用与研究

位置自动控制在钢铁企业里占有极为重要的地位,它是以传统控制理论为依据,用编码器或直线位移传感器检测出实际位置作为反馈来进行控制。而钢铁企业现场环境又比较恶劣,这些元件在这样的环境下很容易损坏,这就给生产带来很多不便。主要表现在影响生产的顺利进行,增加设备的备件和维修成本,要消耗大量人力去维护、保养和更换。基于这些原因,根据位置自动控制理论,引入了模糊控制,用模糊控制理论取代传统控制理论,用软件代替位置检测装置来实现位置自动控制。通过在现场的实际应用,取得了很好的效果,也获得了很高的经济效益。