架空乘人装置用隔爆兼本安型控制箱的研制

针对采用继电器控制方式控制架空乘人装置存在维护困难、工作效率低、安全性能差等问题,提出了一种基于PLC控制的架空乘人装置用控制箱的研制方案,介绍了该控制箱的硬件、软件设计及功能特点。该控制箱采用PLC作为控制核心、MT6070I系列触摸屏作为人机界面,实现了架空乘人装置及时停车、急停闭锁、状态及时显示、保护等功能。实际应用表明,该控制箱运行稳定,实现了全自动无人值守运行,提高了架空乘人装置的安全性和可靠性。     

基于双控制器的矿井供电网络漏电检测装置

针对现有馈电保护开关动作慢的缺点,设计了一种基于双控制器的矿井供电网络漏电检测装置。该装置以ATmega329单片机为控制核心实现故障判断和控制功能,采用ATT7022 DSP实现交流信号采集与统计计算功能,从而分开处理数据处理和控制功能,有效提高了装置的故障处理速度和交流信号数据采集的准确性;其选择性漏电检测电路采用自调节、自适应功能设计,对不同的矿井环境具有较好的适应性。调试试验结果表明,该装置精度较高,动作速度快,适应性强。     

预付费电能表功能检测装置的研制

为使常规电能表能对贸易结算方面数据的交换和电量的控制进行测试和考核,全面实现自动化检测预付费电能表功能,设计了预付费电能表功能检测装置.该装置通过计算机软件和插卡模拟器的结合,实现自动插拔卡操作;采用断电续流设计,完成继电器功能检测.同时,增加了光电检测系统、继电器状态检测系统等检测措施.实践证明,该装置实现了对预付费功能的自动检测和判断.     

煤矿井下人员安全可穿戴装置研究

针对井下人员定位系统定位精度较低、井下人员生命体征监测系统功能不全面的问题,研究了一种具有人员定位、摔倒或躺下姿态监测及心率监测功能的可穿戴装置。该装置采用RSSI测距与步距计算相结合的方法提高人员定位精度,采用三轴加速度传感器监测人员的异常动作,采用心率传感器获取心率数据。测试结果表明,该装置可以实现井下人员精确定位,能够准确判断井下人员是否摔倒、躺下,并对异常状态进行报警。     

自动装车系统中的车厢位置监测装置设计

文章介绍了自动化装车过程中车厢定位装置的工作原理、软件与硬件设计及其安装使用方法。该装置选用S7-300 PLC为监控主机,采用对射式光电传感器检测车厢行进位置,实现了对煤炭装车过程中车厢位置的实时定位及控制功能。实际应用表明,该装置运行效果良好。     

温度检测标定装置设计与实现

针对油田生产中温度难以精确测量、人力资源浪费、工作效率不高的问题,设计了一套温度仪表自动化检测装置。分别给出了装置的硬件结构和软件功能。对虚拟仪器的工作原理与温度检测装置的整体结构进行了研究,采用图形显示方式对接收的数据信号进行处理。为了实现数据共享与仪表自动检验检测功能,将采集处理后的数据与检验检测综合信息系统相结合。采用该温度检测技术对仪器的上下位机进行软硬件设计,实现了多线程检测的自动化测量和电信号的采集。该温度检测装置可避免因温度漂移所造成的浪费,有利于带动相关产业的可持续性研究。     

矿井提升装置闸间隙保护装置的设计

针对目前煤矿采用的闸瓦磨损与弹簧疲劳保护开关存在调整误差大、保护功能不全等问题,介绍了一种矿井提升装置闸间隙保护装置的设计方案,详细介绍了该装置的设计目标、工作原理、总体硬件设计。该保护装置可实时监测矿井提升装置盘形闸与制动盘的实际工作间隙,当两者之间的间隙超过2 mm时能够自动声光报警或断电。实际应用证明了该装置的可靠性。     

水流量标准装置控制系统的设计

介绍了一种采用称重法标定标准表、标准表法标定被测流量计的水流量标准装置的组成,重点阐述了该装置控制系统的硬件组成、工作原理及人机界面设计方案。该控制系统采用S7-300 PLC对水流量标准装置的数据进行采集及处理,控制水泵启停、换向器换向,并采用SIMATIC WinCC组态软件实现水流量标定效果显示、参数设置及报表的生成、保存、查询等功能。测试结果表明,该水流量标准装置标定出的涡街流量计的线性度和重复性达1.0级精度要求,其控制系统稳定可靠,不确定度小。     

基于双CPU的电动机保护装置设计

介绍了一种基于DSP56F807和W78E516B的双CPU结构的电动机保护装置设计方案,着重分析了该装置中主控板、人机交互板的硬件电路设计及保护算法。该装置采用DSP56F807实现多通道AD转换、电量计算、各种保护算法、实时时钟控制、数据存储、CAN通信及继电器开关量输出控制等功能,采用W78E516B实现人机交互功能,采用带有任意衰减时间常数补偿、滤除衰减直流分量的傅氏算法来提高电动机保护算法的精度和准确度。实验结果表明,该装置的过电流保护算法具有较高的灵敏度和可靠性,取得了良好的运行效果。     

矿井轨道斜巷人车安全闭锁装置的研究

文章介绍了一种新型矿井轨道斜巷人车安全闭锁装置的设计方案,阐述了该装置的功能及结构组成,给出了主/分控制箱设计及通信功能的实现。该装置能够实现人车安全闭锁,实时检测巷道内人员数量、位置及出入方向,并具有声光报警及特殊情况处理功能。实际应用表明,该装置性能稳定,具有一定的推广价值。     

A Real-Time, Hierarchical, Sensor-Based Robotic System Architecture

A robotic system architecture is presented and its real-time performance, when used to control a robotic gripper system for deformation-free handling of limp material, is evaluated. A major problem to be overcome has been the integrability and compatibility issues between various components of the developed system. The software and hardware protocols and interfaces developed to control and coordinate the subsystem operations and interactions are presented. The performance of the developed real-time, hierarchical, sensor-based robotic system architecture is found to meet and satisfy a set of system operational constraints and demands as dictated by the industry.     

Development and evaluation of online text-independent speaker verification system for remote person authentication

In this paper an online text-independent speaker verification system developed at IIT Guwahati under multivariability condition for remote person authentication is described. The system is developed on a voice server accessible via telephone network using an interactive voice response (IVR) system in which both enrollment and testing can be done online. The speaker verification system is developed using Mel-Frequency Cepstral Coefficients (MFCC) for feature extraction and Gaussian Mixture Model—Universal Background Model (GMM-UBM) for modeling. The performance of the system under multi-variable condition is evaluated using online enrollments and testing from the subjects. The evaluation of the system helps in understanding the impact of several well known issues related to speaker verification such as the effect of environment noise, duration of test speech, robustness of the system against playing recorded speech etc. in an online system scenario. These issues need to be taken care for the development and deployment of speaker verification system in real life applications.     

A novel approach for phonocardiographic signals processing to make possible fetal heart rate evaluations

In this paper, a non-invasive, portable and inexpensive antenatal care system is developed using fetal phonocardiography. The fPCG technique has the potential to provide low-cost and long-term diagnostics to the under-served population. The fPCG signal contains valuable diagnostic information regarding fetal health during antenatal period. The fPCG signals are acquired from the maternal abdominal surface using a wireless data acquisition and recording system. The diagnostic parameters e.g., baseline, variability, acceleration and deceleration of the fetal heart rate are derived from the fPCG signal. A model based on adaptive neuro-fuzzy inference system is developed for the evaluation of fetal health status. To study the performance of the developed system, experiments were carried out with real fPCG signals under the supervision of medical experts. Its performance is found to be in close proximity with the widely accepted Doppler ultrasound based fetal monitor results. The overall performance shows that the developed system has a long-term monitoring capability with very high performance to cost ratio. The system can be used as first screening tool by the medical practitioners.     

一种模块化的流媒体系统开发框架

Directshow是目前比较流行的流媒体系统开发框架，但是使用Directshow技术开发的流媒体系统在可移植性、运行效率、稳定性、可扩展性等方面都存在着明显的不足。针对Directshow存在的这些不足之处，进行了相应的改进，设计和实现了一种新的模块化流媒体系统开发框架，可以使得开发出来的流媒体系统在各方面性能有所提高。     

动态数据库管理中记录功能的实现与应用

在某仿真系统中,各功能模块之间需要进行大量的数据交换,需要一个数据库对各模块的有关数据进行统一管理,而整个仿真系统各功能模块均采用VC++进行开发,为了整个系统的一致性、开放性等,该管理功能也采用VC++进行开发。利用VC++实现了数据库常规管理功能的开发。     

基于组态软件和仿真软件的层流冷却实验平台

针对热轧层流冷却过程的自动化系统及优化控制算法难以在实际运行环境中进行充分的调试和验证、基于仿真软件发的实验平台则脱离工业实际的监控与运行环境、购买硬件控制系统进行实物/半实物仿真价格昂贵等问题,本文提出了采用组态软件、工业控制器模拟软件、仿真软件混合编程开发层流冷却虚拟实验平台的方法。该平台采用C#语言开发参数优化子系统、组态软件开发管理监控子系统、工业控制器模拟软件运行回路控制程序、MATLAB软件开发对象模型子系统,通过OPC软总线等技术实现了各个子系统的无缝连接。本文最后采用实际工业数据验证了平台的有效性,表明其广阔的应用前景。     

基于CHEMSTAR的在线模拟优化系统

以青岛科技大学计算机与化工研究所的CHEMSTAR化工之星为平台，开发了基于CHEMSTAR的在线模拟优化系统。提出了系统形成的基本思路，建立了系统的总体结构，本系统可以在线的实现过程数据校正和模拟优化。最后，应用工业实例来说明基于CHEMSTAR的在线模拟优化系统的可行性和实用性。     

A secure IRB system for assisting the development of intelligent medical devices

Considering the demand for improvement of monitoring the elders’ states of health, various kinds of intelligent medical devices have been designed by health care industries recently. This paper, therefore, develops an integrated Institutional Review Board (IRB) system to connect to hospitals, clinics, manufacturers, and customers for sharing information, reducing administrative costs, and further improving the quality of intelligent medical devices design. Moreover, two efficient security protocols are designed to establish secure communications in our developed integrated IRB system for protecting sensitive and confidential information. Main contributions of our developed IRB system are listed below. (i) The developed system provides a similar expert system to assist the development of intelligent medical devices and instantaneous management of clinical trails. (ii) Information about clinical trials and knowledge, clinical professionals, and trail investigators can be well constructed and maintained as a knowledge base for improving quality and efficiency of future clinical trials. (iii) The system provides a standard operating process and project management for clinical trials. (iv) It is efficient in accessing to IRB certification. (v) The developed system allows or assists the trial investigators and manufactures to communicate and cooperate with one another via a platform. (vi) Secure communications can be established in our IRB system, and hence all sensitive and confidential information can be protected from being disclosed. (vii) It is secure against potential attacks while users login to the developed IRB system.     

湿法烟气脱硫塔计算机辅助设计系统

采用Visual C 工具对湿法烟气脱硫塔的AutoCAD进行了二次开发，开发出了湿法烟气脱硫塔计算机辅助设计系统。在此基础上，对其开发的方法和技术进行了研究。结果表明，所开发出的湿法烟气脱硫塔设计系统可靠性强、操作简单、界面可视化，极大地提高了脱硫塔的设计效率与质量。     

基于ARM/WiFi/QT的无线视频监控系统的开发

利用ARM和QT开发了一款基于WiFi网络的无线视频监控系统.系统由远程视频采集端、WiFi网络和监控中心三部分构成.远程视频采集端采用 PXA270 ARM10微处理器为核心的硬件平台,并在其上建立 Linux操作系统,完成视频的采集、H.264编码压缩和传送.监控中心使用QT利用多线程技术开发了客户应用软件,实现监控视频的解码和显示. WiFi网络实瑞视频采集端和监控中心间的视频传输.使用效果表明,该系统能稳定实时地显示一路或多路视频监控图像,很好地达到了设计的要求,在各领域具有广泛的应用前景.