基于MSP430单片机远程家庭环境监测报警器的设计与实现

随着物联网的发展,本文介绍一种基于GSM 的家居环境监控系统。主要以MSP430单片机为控制中心, YM12864液晶显示器和WTV020-SD语音模块作为人机交互设备,TC35i作为GSM通信模块,设计利用温、湿度传感器DHT11,MQ系列烟雾传感器等对环境的温度、湿度、烟雾、可燃气体等进行实时监测并实现现场参数的显示、报警、语音提示与远程手机报警,可将测得的数据传送由单片机处理后通过GSM通信模块将转换来的数据以短信的方式发送到手机,达到远程监测的目的。     

Crystal shape monitoring and supersaturation measurement in cooling crystallization with quartz crystal oscillator

A crystallization monitoring system using a quartz crystal oscillator was utilized to predict different shapes of crystal formation by measuring crystal growth rate and to measure supersaturation. Applying different rates of cooling, crystal formation of different shapes was induced, and the frequency variation of the oscillator and the crystal shape observed with an SEM were compared to determine how the frequency variation can be interpreted for the prediction of produced crystal shape. The experimental results obtained from the crystallization of potassium nitrate and cupric sulfate solutions showed that the proposed frequency measurement technique could be applied in the prediction of crystal shape of cooling crystallization processes. In addition, supersaturation was determined from the measurements of solution and coolant temperatures.     

GoAhead Web Server在嵌入式远程监控系统中的应用

文章对Go Ahead Web Server的基本特点和运行环境进行了介绍,结合嵌入式远程监控系统的现状,将嵌入式开发平台、Linux操作系统、Go Ahead Web Server和I n t e r n e t融合在一起,设计了一个控制电压转换的嵌入式远程监控系统。应用结果表明,Go Ahead Web Server反应迅速,可靠稳定,在实际应用中具有可行性,对嵌入式产品的管理和控制可以得到满意的效果。     

Monitoring the degradation of a high solids epoxy coating by means of EIS and EN

This paper reports a study of the degradation processes suffered by steel samples painted with a high solid content epoxy coating. Because this coating shows a high resistance when exposed to NaCl solutions, HCl solutions were employed to accelerate the corrosion processes. Macroscopic images were used to observe the coating degradation. Then electrochemical techniques, electrochemical impedance spectroscopy (EIS) and electrochemical noise (EN) were employed to monitor the corrosion behaviour of the system studied. A close correlation was found between EIS and EN data. Several parameters were estimated using these techniques: R_po, R_ct, C_c, C_dl and Z_0.1 Hz using EIS, and R_n using EN. In addition, a new parameter estimated by means of EN was employed, Z_0.1 Hz(EN). The evolution of all these parameters with time enabled the effective monitoring of the degradation stage of the coating.     

基于WiFi的井下无线智能终端的设计

WiFi技术以其组网方便、易于扩展等优势,越来越受到广泛关注,有着广阔的应用前景。本文设计了基于ARM9的WiFi智能终端,利用WiFi无线局域网技术实现了语音通信、数据采集和远程监控等功能,可用于矿井语音、视频通信和环境的实时监测。     

基于COM的数据自动化处理技术在工程变形监测中的应用

现代施工技术需要及时、准确的报告出对工程建筑物关键部位的变形情况。传统的依赖办公自动化软件对监测数据进行简单的处理,已经满足不了实际需求。本文以具有特殊结构的合肥渡江战役纪念馆主体工程为应用背景,阐述了如何针对具体的监测项目,基于COM技术及office对象模型,二次开发生成数据处理程序,采用本高级数据自动处理方案,极大的提高了变形监测数据处理的效率。对类似工程的数据处理,具有很好的借鉴意义。     

基于DSP的智能饮水机纸杯水位检测方法

为了提高传统饮水机的智能化水平,采用DSP芯片TMS320C6416作为处理核心设计了智能饮水机纸杯水位线自动检测系统,系统由摄像头、编码、处理器、阀门开关和显示模块组成.通过对放在出水口处纸杯的原始图像进行灰度化处理、边缘检测、连通域提取和噪声去除算法,分割出杯口内边缘和水位线,并根据像素点的个数计算纸杯内边缘线与水位线的距离.实验结果表明,该智能饮水机具有良好的鲁棒性,平均测量误差为0.88％,也为灌装饮料和食品的满度检测提供了思路和方法.     

基于家庭网络技术的燃气壁挂炉故障监测系统设计

从燃气壁挂炉维修与维护的局限性出发,提出基于家庭网络技术的燃气壁挂炉故障监测系统。该系统保留传统燃气壁挂炉显示面板和控制主板的通讯接口,硬件上串接一个故障跟踪模块。在家庭网络下,故障跟踪模块过滤出燃气壁挂炉的实时状态信息,通过网络上传到远程服务器。远程协助维修员通过上传的实时状态信息,在线给予用户故障剔除方案。本设计实现了燃气壁挂炉的远程维修与维护,为后续的燃气壁挂炉故障诊断风险分析提供了可靠的依据。     

监控管理系统在医院中的应用

经过多年的信息化建设,IT基础设施已具有较大的规模,为各重要业务应用系统提供了必备的基础平台环境。通过一套全面的监控管理系统,代替人工巡检,对医院的服务器、存储、路由器、交换机、数据库进行全面的监控,减少人为出错的可能性。     

Determination of volumetric changes at an underground stone mine: a photogrammetry case study

Photogrammetry, as a tool for monitoring underground mine deformation, is an alternative to traditional point measurement devices, and may be capable of accurate measurements in situations where technologies such as laser scanning are unsuited, undesired, or cost-prohibitive. An underground limestone mine in Ohio is used as a test case for monitoring of structurally unstable pillars. Seven pillars were photographed over in a 63 day period, punctuated by four visits. Using photogrammetry, point clouds of the mine geometry were obtained and triangulation surfaces were generated to determine volumes of change over time. Pillar spalling in the range of 0.29–4.03 m³ of rock on individual rib faces was detected. Isolated incidents of rock expansion prior to failure, and the isolated failure of a weak shale band were also observed. Much of the pillars remained unchanged during the monitoring period, which is indicative of proper alignment in the triangulated surfaces. The photographs of some ribs were of either too poor quality or had insufficient overlap, and were not included. However, photogrammetry was successfully applied to multiple ribs in quantifying the pillar geometry change over time.