PLC为核心的实时监测系统

介绍了由多台可编程控制器（PLC）作为下位机与上位微机构成的远程自动监测系统。利用下位机与上位机的串行通讯，使所有的数据传到上住微机集中处理，并打印成报表。下住机的数字显示用传感器的变送器完成，显示汉字及数据。本系统也可扩展A／D、D／A，并行接口等用于其他适合主从多机系统的数据采集与控制。     

基于网络的蓄电池监测系统

由上位机和下位机组成的网络化系统,上位机对下位机所传送的采集数据进行管理和分析,有效判别蓄电池性能;下位机实现对蓄电池的运行参数进行实时监测,同时给出了下位机的硬件电路设计和软件实现.     

基于CAN总线的温湿度在线监测系统设计

为了对多个监测点的温度和湿度数据进行实时在线监测和集中管理,设计了一种基于CAN总线和USB接口的温湿度监测系统。该系统由多台下位机、一台中央机和一台上位机组成。下位机采用ATmega8单片机控制数字温湿度传感器DHT11,实时显示温湿度数据,并通过CAN总线将数据传输至中央机。中央机负责接收各个下位机的数据,实现CAN-USB转换,并通过USB接口将监测数据上传至上位机。上位机能够显示各个测点的温湿度,监测各下位机的工作状态。系统扩展监测点方便,数据传输稳定快速。     

金属镁还原炉微机自行检测控制系统问世

东南大学研制成功金属镁还原炉微机自动检测控制系统。该系统由微机、软件、传感器、显示、监测和多种仪表组成。采用分布式控制的上位机和下位机控制 ,上位机是监控管理机 ,由 486或586微机担任 ,一台上位机可控制 4～ 1 6点 ;下位机是工业控制机 (ＡＳＴＤ) ,下位机运用串行通信方式 ,可控制炉子的 8～ 1 0个以上参数 ,采用模糊控制技术 ,使用界面直观友好。在微机和多种先进软件的控制下 ,炉内 8个炉管温度平衡 ,在 1 1 0 0℃以下误差达± 5℃ ,相应的炉内压力、油温和油压均控制在要求范围内 ,可节油 4%。该系统适用面宽 ,可用于烧重油…     

串口和以太网通信技术在油液在线监测系统中的应用

油液在线监测是设备润滑磨损状态监测技术发展的重要方向,而通信技术在油液在线监测控制系统中有着举足轻重的作用.针对设备润滑磨损监控开发的油液在线监测系统由上位机和下位机组成,采用以太网技术实现上、下位机的通信.上位机实现对被监测润滑油参数的实时显示、趋势分析、数据存储、数据导出、故障报警及诊断等;下位机集磨损、黏度等多种传感器采用PC104实现被监测润滑油数据的采集与处理,并利用嵌入式处理器中的异步通信接口(串口技术)与PC104进行数据交换,从而实现该技术在设备油液在线监测系统中的应用.     

抗干扰水泵综合特性测试系统软件研究

介绍一套具有高抗干扰能力的水泵综合特性测试软件系统。该系统采用上下位机的微机测试模式。通过传感器实时地采集水泵的各运行工况参数，并通过RS-232串口通信实现上下位机的数据传输，使得系统具有强的抗干扰能力。除在上位机对采集的数据进行实时图形化显示和分析处理外，下位机也可独立对测试数据进行处理，方便地获得水泵的综合特性。文中重点讨论了该系统的基本构成、主要功能、上位机与下位机串行通信的实现方法，以及应用实例。     

基于VB6.0的在线温度检测系统

介绍了基于上位机、下位机和RS485通讯的多路温度监测系统。下位机以STC89C52为核心,完成温度数据的测量与传输。上位机基于PC实现,利用VB6.0编程环境,调用EXCEL表格,实现温度数据的实时记录、实时显示。同时,调用PC所含多媒体播放对象,实现自动播放报警声音。在此基础上,实现了多路远程温度测量、存储、曲线显示、智能报警等功能。     

减振器动力学性能试验软件系统设计与实现

减振器性能试验软件系统基于C＋＋Builder软件开发环境和Silicon单片机编程,实现测试的全自动控制。其基本原理是：利用上位机中的软件与下位机之间的Zigbee无线通信,上位机发送各种控制命令,下位机运行自身的程序,进行数据的采集与传输,同时,上位机接收下位机返回的各种采集数据,进行信号分析,将采集信号及其频谱显示在显示屏上,并存储采集数据到数据库,方便后续查询。     

基于FPGA控制单片机接口的远程监测系统

介绍了基于FPGA控制单片机接口实现远程监测系统的设计.该系统采用双CPU结构,下位机负责采集现场数据,上位机控制和监测下位机,FPGA作为下位机接口的控制芯片实现现场数据采集、数据液晶显示等工作.通过RS485总线实现上下位机的远程数据通信.     

基于USB-HUB的能谱仪通讯系统设计

针对能谱仪中上位机需要同下位机的多个部件进行数据通讯的要求,给出了一种通过在下位机控制板上集成USB-HUB,实现上位机与下位机多部件数据通讯的方案。从硬件电路和软件编程两方面进行了详细的阐述,并就设计中的注意事项进行了说明。实验结果表明:该方案实现了数据快速、稳定的传输,减少了上位机与下位机之间的接口数量,方便操作人员使用。     

基于DSP数字式风能涡轮机振动监测仪的设计

在风能发电中,振动监测对整个系统起着重要的作用.系统分为下位机和上位机:下位机通过加速度传感器采集信号并进行抗混叠低通滤波,滤波后的信号进行A/D转换、然后将数字信号送入DSP数字处理器,进行软件滤波、数据分析、报警设置,最后将处理后的数据(D/A转换)通过CANopen协议上传给上位机存储和显示.整个系统工作可靠,为风场的风能涡轮机运行提供了安全保障.     

基于Arduino小型激光雕刻机的研究与设计

激光雕刻机以Arduino单片机为核心,并根据Arduino单片机与PC机的特点,对设计方案进行总体规划。设计了基于Arduino单片机的接口电路以及位于上位机的可重构数控系统。控制系统上、下位机均采用开放式、模块化、集成化的设计方法,设置了仿真模块、数据模块、译码模块以及通讯模块等软件结构模块,并对图像文件的处理做出简单叙述。研制了一台小型激光雕刻机数控试验台,对设计的小型激光雕刻机进行实际加工测试。     

The optimal configuration and workload allocation problem in flexible manufacturing systems

In this article we consider the problem of determining the minimum cost configuration (number of machines and pallets) for a flexible manufacturing system with the constraint of meeting a prespecified throughput, while simultaneously allocating the total workload among the machines (or groups of machines). Our procedure allows consideration of upper and lower bounds on the workload at each machine group. These bounds arise as a consequence of precedence constraints among the various operations and/or limitations on the number or combinations of operations that can be assigned to a machine because of constraints on tool slots or the space required to store assembly components. Earlier work on problems of this nature assumes that the workload allocation is given. For the single-machine-type problem we develop an efficient implicit enumeration procedure that uses fathoming rules to eliminate dominated configurations, and we present computational results. We discuss how this procedure can be used as a building block in solving the problem with multiple machine types.     

基于串行总线高精度测量网络的实现

针对在高精度测试领域中，对系统的精度、网络化和成本的要求，提出了一种基于串行总线的高精度网络化测量网络，它充分利用了一些串行总线的优点，简化了系统和网络，并采用高精度的模数转换芯片提高系统的分辨率，同时采用可在线修正传感器的特性系数的方案，从而提高测量的精度。系统由一个主机和几个从机组成，它们之间利用MODBUS协议进行通讯，从而完成对整个系统的测量和控制。最后结合高精度测温系统实现了测温网络的功能。     

Mobile and remote operation for M2M application in upcoming u-manufacturing

This study tried to control and monitor computerized numerical controller (CNC) machines anywhere and anytime for machine (mobile) to machine (M2M) application in wired and wireless environment of upcoming ubiquitous manufacturing systems (u-Manufacturing). With a personal digital assistant (PDA) phone, the machine status and machining data of CNC machines can be monitored in wired and wireless environments, including the environments of IMT2000 and Wireless LAN. Moreover, CNC machines can be controlled anywhere and anytime. The concept of the anywhere-anytime controlling and monitoring of a manufacturing system was implemented for u-Manufacturing in this study. In this concept, the communication between the CNC controller and the PDA phone was successfully performed anywhere and anytime for the real-time monitoring and control of CNC machines. In addition, the interface between the CNC controller and the developed application module was implemented by object linking and embedding for process control (OPC) and shared CNC memory. For communication, the design of a server content module within the target CNC was based on a TCP/IP. Furthermore, the client content module within the PDA phone was designed with the aid of embedded c++ programming for mobile communication. For the interface, the monitoring data, such as the machine status, the machine running state, the name of the numerical control (NC) program, the alarm and the position of the stage axes, were acquired in real time from real machines with the aid of the OPC method and by sharing the CNC memory. The control data, such as the start, hold, emergency stop, reserved start and reserved stop, were also applied to the CNC domain of the real machine. CNC machines can therefore be controlled and monitored in real time, anywhere and anytime. Moreover, prompt notification from CNC machines to mobile phones, including cellular phones and PDA phones, can be automatically realized in emergencies.     

Ubiquitous-based mobile control and monitoring of CNC machines for development of u-machine

This study was an attempt to control and monitor Computerized Numerical Controller (CNC) machines anywhere and anytime for the development of a ubiquitous machine (u-machine). With a Personal Digital Assistant (PDA) phone, the machine status and machining data of CNC machines can be monitored in wired and wireless environments, including the environments of IMT2000 and Wireless LAN. Moreover, CNC machines can be controlled anywhere and anytime. The concept of the anywhere-anytime controlling and monitoring of a manufacturing system was implemented in this study for the purpose of u-manufacturing and u-machines. In this concept, the communication between the CNC controller and the PDA phone was successfully performed anywhere and anytime for the real-time monitoring and control of CNC machines. In addition, the interface between the CNC controller and the developed application module was implemented by Object linking and embedding for Process Control (OPC) and shared CNC memory. For communication, the design of a server contents module within the target CNC was based on a TCP/IP. Furthermore, the client contents module within the PDA phone was designed with the aid of embedded c++ programming for mobile communication. For the interface, the monitoring data, such as the machine status, the machine running state, the name of the Numerical Control (NC) program, the alarm and the position of the stage axes, were acquired in real time from real machines with the aid of the OPC method and by sharing the CNC memory. The control data, such as the start, hold, emergency stop, reserved start and reserved stop, were also applied to the CNC domain of the real machine. CNC machines can therefore be controlled and monitored in real time, anywhere and anytime. Moreover, prompt notification from CNC machines to mobile phones, including cellular phones and PDA phones, can be automatically realized in emergencies.     

基于DSP的电机综合参数测试系统研究

提出一种基于DSP的电机综合数据采集系统设计方案,论述了测试系统原理、硬件电路设计及系统软件设计.该系统可以测量电机的电压、电流、功率因数、功率、温度、转矩和转速,能够对电机参数进行快速准确地测定分析,用于电机的控制和智能保护.     

Selection of coordinate measuring machines by the neural network method

In this paper, a method for the selection of coordinate measuring machines is developed first, a neural networks training algorithm with conditional attributes through gradually adding training examples is proposed as the neural networks machine learning model for the selection of coordinate measuring machines. A learning model using conditional attributes was used in this study, which divides a problem into either an attribute or a decision. Through the input of attribute values, the system can present the required decision by inference. With this model, the training of the system can produce acceptable results. This learning model is also used to establish a multiple decision type selection system for coordinate measuring machines to assist the user in choosing an appropriate coordinate measuring machine.     

控制工程基础新实验系统设计

介绍了由PC机、AD、D／A数据采集卡、自动控制原理学习机组成的控制工程基础新实验系统。该系统以消息驱动为基础，通过相应的软件实现对控制系统的实时监测，并对控制的结果进行数据分析，取代了传统的以示波器和信号发生器为主要工具的操作模式。新的实验系统十分方便于学生自己动手设计实验，使学生学习的主动性和学习效率显著提高。     

无线三维调整机控制系统的设计

在现代造船业的现场制造和安装过程中,三维调整机是必不可少的关键设备。设计的无线三维调整机控制系统由1台主控制机及8台调整机组成,主控制机与调整机之间采用1对多的无线通信方式,工作频段433 M,双频点全双工通信模式;同时,为了确保数据在主控制机和三维调整机之间及时、准确可靠的传输,系统采取了建立全双工的通信模式以及采用合理的调制编码方式、数据包结构等措施,从而满足了生产的性能要求。