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基于ARM平台无线预警分析仪的研究与设计摘要随着国民经济发展,城市管理部门针对城市社会公共安全监控及重大工程等预警的需求急剧增强。
本文提出一种具有支持gsm语音通信、3g无线数据传输、gps卫星定位的手持预警分析仪的设计方法。
通过该分析仪,还可实现远程无线实时预警、通讯以及快速定位等功能,并提供了多方会商支持。
关键词 arm平台;无线;预警中图分类号tp332 文献标识码a 文章编号1674-6708(2010)30-0225-020 引言电子设备走向智能化、无线化的发展趋势已是不争的事实。
物联网代表了未来社会治安及重大工程安全监测的方向,在军事、民用等多方面具有广发应用前景,更是关系到公共安全、经济发展与社会稳定的重大科技,是国家重点发展的科技项目[1]。
随着各种无线传感网络建设的不断投入,数据量日趋庞大,无线传感网络数据收发和分析能力亟待提高,要求越来越及时捕捉监测数据分析并对危险源进行及时预警。
因此,能够便于无线接收数据并且24小时随时提供实时分析预警分析设备收到广泛关注[2]。
本文提出并设计实现了一种高集成度、低成本、高可靠性、能够便于野外工作携带并且24小时随时提供分析预警的掌上办公设备。
该终端采用目前成熟的的嵌入式系统解决方案,以高性能arm处理器和嵌入式linux操作系统为核心[3],对多媒体信息终端进行设计实现。
1 原理及设计1.1 总体设计分析仪由无线分析仪设备和分析系统软件组成,并采用基于无线网络进行实时数据交互方式工作。
本文给出的方案采用嵌入式平台设计开发,采用arm双核处理器,采用802.11b/g无线和移动3g芯片构成双无线全天候无线模块。
软件部分则由网络数据分析程序和三维演化程序组成,可以通过分析仪依靠网络或者3g(wcdma,td-scdma等)网络进行交互。
由于移动通信网络信号覆盖率高,因此可以互为补充,实现随时随地接收,实时获取预警情报[4]。
由于应用程序java语言开发,具备良好的跨平台特性。
一种手持无线数据采集器的设计与制作摘要：本系统主要是针对汽车钢瓶的监管，通过采集器扫描钢瓶电子标签的信息，来监管气瓶是否合格，合格才允许给汽车加气。
应市场需要运用先进的RFID技术，Zigbee无线收发，ARM控制器开发出CNG读取电子标签系统。
本系统使CNG气瓶得动态监管成为可能，加大了监管力度，建立安全监管长效机制。
关键词：Zigbee；RFID；ARM7微控制1 引言随着2005年西气东输工程覆盖120个城市，CNG汽车的发展势头更加强劲。
CNG气瓶爆炸事故时有发生，对和谐社会的建立以及人民群众的生命财产安全构成了严重的威胁。
当前存在的监管瓶颈和CNG车载气瓶的隐患，突显出监管工作的重要性和急迫性，我公司应市场需要运用先进的RFID技术开发出CNG电子标签系统。
本系统使CNG气瓶得动态监管成为可能，加大了监管力度，建立安全监管长效机制。
2 无线数据采集的发展无线数据采集系统产生于20世纪50年代，美国首先研究出了用于军事领域的测试系统。
20世纪70年代后期，随着计算机的不断发展，诞生了有采集器、仪表同计算机一起溶为一体的数据采集系统。
由于这种数据采集系统性能优良，超过了系统自动检测仪表和专用的数据采集系统，因此获得了惊人的发展[1]。
70年代起，数据采集系统的发展过程中逐渐分成两类，一类用于实验室数据采集系统，一类用于工业现场数据采集系统。
无线数据采集系统是通过采集传感器输出的模拟信号并经过A/D转换成数字信号，再进行分析、处理、传输、显示等操作。
随着现代社会发展越来越智能化，普通的有线传输已经远远不能满足人们的需求了，无线数据采集，无疑是现代社会研究的重点，它能很好的解决有线传输的弊端，现如今，已经开始逐渐的普及到各个领域，所以对无线数据采集的研究是必不可少的，也是很有前景的一种研究方向。
3方案整体设计2.1 设计要求（1）每个汽车气瓶上都将安装一枚唯一的电子标签，加气时利用手持无线采集器对电子标签进行扫描（2）根据电子标签内存储的检验、充装数据判定气瓶是否超期服役、是否检验合格（3）数据存储和通信功能。
本科生毕业论文（设计）基于ARM9的智能监测系统的设计院系：信息工程学院专业：电子信息工程提交日期：2012年4月20日目录中文摘要 (2)英文摘要 (3)1．绪论........................................................................................ 错误！未定义书签。
1.1 视频监测系统现状........................................................... 错误！未定义书签。
1.2 课题研究意义................................................................... 错误！未定义书签。
1.3 视频监测系统的发展方向 .............................................. 错误！未定义书签。
2．监测系统整体方案设计 .. (7)2.1 测系统整体方案选择 (7)2.2 监测系统硬件整体方案设计 .......................................... 错误！未定义书签。
2.3 监测系统软件整体方案设计 .......................................... 错误！未定义书签。
3．监测系统的硬件设计 (9)3.1 嵌入式系统 (9)3.1.1 嵌入式系统定义 (9)3.1.2 嵌入式系统特点 (4)3.1.3 嵌入式系统的组成 (10)3.2 系统主要硬件介绍 (7)3.2.1 嵌入式处理器 (7)3.2.2 摄像头 (7)3.2.3 存储硬盘接口 (11)3.2.4 SDRAM (11)3.2.5 其他硬件 (12)4．监测系统的软件设计 (13)4.1 软件开发平台及开发工具 (13)4.2 构建嵌入式系统软件平台 (14)4.3 视频服务器的启动 (19)4.4 网络视频监测流程 (18)5．结论 (21)参考文献 (19)致谢 (23)附录 (24)基于ARM9的智能监测系统的设计*******指导老师：******（黄山学院信息工程学院，黄山，安徽，245041）摘要：智能监测系统是当今信息技术领域的一个热门研究方向。
基于ARM的无线网络视频监控系统设计与实现作者：邹翰刘昌华来源：《软件导刊》2016年第03期摘要：利用ARM cortex-A8开发一个无线网络视频监控系统。
采用系统采用B/S架构，用WiFi网络传输视频数据，由Web视频服务器、无线传输模块和远程监控终端3部分组成。
探讨Web视频服务器的软硬件设计，包括服务器硬件平台搭建、Linux系统移植部署、MJPG-streamer移植及WiFi网络构建。
测试结果表明，系统运行稳定，实时性较高，可实现多终端同时监控，采集到的图像清晰流畅，无明显失真，视频监控效果良好。
关键词：B/S架构；ARM cortex-A8；视频监控；WiFi；MJPG-streamer中图分类号：TP319 文献标识码：A 文章编号：1672-7800（2016）003-0063-03作者简介：邹翰（1991-），男，湖北荆州人，武汉轻工大学数学与计算机学院硕士研究生，研究方向为嵌入式技术；刘昌华（1963-），男，湖北武汉人，武汉轻工大学数学与计算机学院副教授、硕士生导师，研究方向为计算机网络及应用、嵌入式FPGA设计。
0 引言随着平安城市和智能小区建设的快速发展，视频监控技术成为IT领域最热门应用技术之一。
视频监控技术经历了模拟视频监控、数字视频监控和网络视频监控3个阶段[1]。
有线网络视频监控系统[2]存在布线繁琐、监控点固定和在复杂环境下适应性差等问题；3G无线网络视频监控系统[3]由于受网络成本和通信速度的限制，应用范围并不广泛；WiFi网络技术具有使用成本低、传输速率高及网络构建简单的优点，更加符合市场需要。
结合嵌入式技术可靠性高、成本低、体积小和实时性强等特点，基于ARM的无线视频监控系统具有广泛的应用前景。
本文提出一种基于WiFi无线网络的视频监控系统。
1 系统概述该无线视频监控系统整体结构如图1所示，由USB摄像头采集视频图像，经搭载有Web 视频服务器的ARM平台进行压缩编码并传输到网络，各终端再通过无线网络接收，并在Web 浏览器中显示。
A Design of Digital Handheld Terminal in WirelessData Acquisition SystemXingguo SUNKey Lab of Intelligent Computing and Signal Processing of Ministry of Education, Anhui UniversityHefei, ChinaShouxian WENKey Lab of Intelligent Computing and Signal Processing of Ministry of Education, Anhui UniversityHefei, ChinaLei XUKey Lab of Intelligent Computing and Signal Processing of Ministry of Education, Anhui UniversityHefei, ChinaXiaohui LI*Key Lab of Intelligent Computing and Signal Processing of Ministry of Education, Anhui UniversityHefei, ChinaAbstract—In order to make data collection more convenient, quick and accurate in working site in the existing wireless data acquisition system, one kind of multi-function handheld terminal is designed which combines the wireless and wired data acquisition. The paper adopts Atmega128 of ATMEL as micro-controller, nRF905 of Nordic as data transmission module. It designs power management, liquid-crystal display and data storage circuits. The results of practical test show that the handheld terminal can be applied to all kinds of wireless data acquisition networks, and it has several advantages like easy to carry, large data storage capacity, rich function and low cost.Keywords-DS18B20 ; NRF905 ; Handheld terminal ; Data acquisition systemI.INTRODUCTIONWith the popularization of the large amount, cheap and highly integrated wireless module and the rapid development of wireless communication technology, the wireless data acquisition system has been widely used in industry, agriculture, medical and other fields. The existing wireless data acquisition system is composed of a convergent node, basic nodes and the server. The convergent node exchanges information with basic nodes by the radio frequency (RF) module or Zigbee module[1-4].Basic nodes collect information by the digital sensors and send it to the converge node in the form of packet. The data which is gathered by the converge node can be sent to the local server[5]or be transmitted to the remote server by GPRS [6]or GSM[7]. This way need to pay for the expensive network cost, and can not collect data conveniently, quickly and accurately[2].Based on the analysis above, this paper proposes a design scheme of handheld terminal. nRF905 is chosen as communication module which can realize remote transmission. We design the routing protocol which realizes automatic searching and manual setting. It makes the handheld terminal collect data information reliably in any effective area of the wireless network coverage and then display the data on LCD. Handheld terminal has the USB interface circuit which can be directly connected to the computer and allow computer to receive or send commands and data. In addition, it also supports the wired data acquisition, data printing.II.APPLICATIONSCENARIOFigure 1. Network StructureFigure 1 illustrates the network structure of application scenario. The wireless data acquisition system can be divided into three parts: extension, handheld terminal and the server.24LC256I/O1I/O2. . . . . .. . . . . .DS18B20. . . . . .. . . . . .. . . . . .. . . . . .DS18B20. . . .. . . .. . . .Figure 2. Extension Structure*Corresponding author.National Conference on Information Technology and Computer Science (CITCS 2012)Extension structure is shown in Figure 2. According to the received instructions, the extension samples the data of temperature and humidity and then transmits to the handheld. We use DS18B20 and SHT75 as temperature and humidity sensors respectively. The circuit of temperature data sampling adopts 1-Wire single-bus mode, so multiple temperature sensors can be mounted on each I/O port. In order to identify the physical location of DS18B20 and to facilitate the server data management, the corresponding layer information is written into the DS18B20 alarm trigger register[8]. When it’s power on, the extension reads DS18B20 ROM serial number and the layer information in alarm trigger register and then store ROM serial number in 24LC256 according to the different I/O ports and layer information. The physical location of DS18B20 can be determined according to the ROM serial number’s store address to realize the effective data management.Handheld terminal works as a convergent node in the wireless network .It collects the data of extension through the nRF905 and transmits it to the computer through the USB interface. In the working site, handheld terminal can search extension through the routing discovery menu and establish a routing table. According to the actual situation, we input an extension’s address. The handheld terminal will set up a path according to the routing table information to realize communication with the extension. The data will be displayed on the LCD after processed. Handheld terminal has data storage, data printing and cable numbering functions. Cable numbering can facilitate system maintenance. When an I/O port of a certain extension appears bad points, these points will be identified through measuring temperature. Handheld terminal ignores these bad points and rewrites layer information of other sensors through cable numbering function. In addition, handheld terminal can collect temperature and humidity data using wired way through link it to cable together directly in the following two cases. One case is that some small temperature and humidity acquisition systems will not use wireless extensions in order to reduce the cost; the other case is that the geographical position is too scattered to suitable for networking.The server transmits specified instructions to handheld terminal through the USB interface. The handheld terminal sends these instructions to the corresponding extension node through the wireless network. With this, the data can be gathered and passed back to the server. The server completes data analysis and management.III. D ESIGN OF HARDWARE CIRCUITHardware of handheld terminal consists of several parts,which is shown in Fig. 3.Figure 3. Hardware StructureA. Control ModuleThis paper chooses a low power consumption, high performance microprocessor Atmega128 as main control chip, which makes the handheld terminal processing faster and working longer. This module is a core control unit of handheld terminal. It obtains instructions from the keyboard and coordinates the whole system.B. Wireless ModuleThe wireless transceiver module adopts radio transceiver single-chip nRF905 which works in the 433/868/915MHz of ISM (Industrial Scientific Medical). The ShockBurst TM feature automatically handles preamble and the CRC (Cyclical Redundancy Check)[9]. In addition, the nRF905 has stand by and power down modes which can save more energy. The Atmega128 connects with nRF905 through SPI. When transmitting the data, the Atmega128 just sends the configuration register information, the receiver address and the transmitted data to nRF905, then nRF905 packages and sends all data (plus preamble and the CRC). When receiving the data, nRF905 detects the carrier and matches the address automatically. The data is received correctly and the preamble, address and CRC are removed, and then the data is transmitted to Atmega128 through SPI.C. Power ModuleLithium Battery is for power supply of the handheld. The charge management chip is CN3052. In the processing of charging, the system automatically switches to an external power to ensure that the system can still work. Once the charge cycle has terminated, the charging indicator light on the handheld will turn off. Due to the working voltage of printer module is 5V, while the other modules operating voltage is 3.3V. The proposed scheme chooses ME6211A33 as 3.3V voltage regulator and LTC1700 as 5V high-current output voltage regulator.D. Function ModuleThe handheld terminal uses CP2102 to achieve a high-speed interface to realize communication between the computer and the single-chip Atmega128. We use a 128×128 lattice LCD screen as display module and use 2×2 matrixkeyboard to realize man-machine information exchange. EN25B16 is a 2M bytes external storage flash and the data can be stored in it. The DS1302 will support time information. In addition, a printer module RD-OEM57V1 is embedded in the handheld terminal which supports data printing.IV. S OFTWARE D ESIGNThe embedded software of handheld terminal is programmed by C Language with the development of IAR Embedded Workbench, and adopts module program structure design. The main tasks of software include data processing, ask sequencing and job scheduling. When the program stars, handheld will initialize the system, including LCD, nRF905, the detecting of battery energy and the corresponding registers, then enter into the initial interface. User can select menu to complete the corresponding function by keyboard. Work flowdiagram of handheld is shown in Figure. 4Figure 4. The flow chart of the softwareThe communication protocol of the system bases on the master-slave structure. The extension can not initiatively launch communication, and it only has a passive response ability. In the system, each extension has two addresses: one is physical address; the other is network address. The physical address of all the extensions is 0xFF, but the network address is unique. When the extension receives instruction, it will determine whether the address correctly or not. Only the address is correct, the extension will execute instructions and return the data. Data frames format of nRF905 is as following table .ⅠTABLE I.D ATA F RAMEF ORMATType Route Route_Depth Route_ Direction DataType code is 1 byte, it is used to distinguish the different operations. Route is 5 bytes. It represents routing information which is obtained from the routing table. The first byte is the source address, the next byte is the destination address, the last 3 bytes are the relay address; the Route_Depth and Route_Direction are all 1 byte which are used to point to the next address. Data represents the transmitted data. If the data is less than 10 bytes, the remaining bits are complemented with 0. When the handheld failed to send message for 10 consecutive times, we can manually change the routing or alternatively enter the routing discovery phase. The wireless network uses dynamic routing mechanism[10]. Each frame of data contains the routing information from the source address to the destination address. The extension need not do any routing operations. It only transmits the data to the next extension, according to the routing information in the packet. During the routing discovery, the handheld terminal broadcasts RREQ packet to all extensions. If the received RREQ extension address is the destination address of routing requesting, the extension will return RREP packet to the handheld terminal, or it will forward RREQ packet. The RREP packet carries the routing information from the source address to the destination address. The flow diagram of route is shownin Figure 5.Figure 5.The flow diagram of routeV. T HE E XPERIMENTAL R ESULTSHandheld terminal collects temperature and humidity information of sensors which are mounted on NO.3 extension through NO.2 relay extension. NO.3 extension hangs two cables. There are six DS18B20 on each cable. The data results are shown in Figure 6.Figure 6. Experimental resultsVI.CONCLUSIONThis handheld terminal combines the wireless and wired data acquisition. It can detect data of working site by wireless way and collect temperature and humidity information by linking to cable directly. The handheld terminals can still work normally in the environment where working site has various forms or extension structure is complicate. In addition, handheld terminal can also connect with computer and allow PC to realize real-time detection, data backup, data sharing and so on.ACKNOWLEDGEMENTThis project is supported by the National Natural Science Foundation of China (No. 60972040), the Anhui Provincial Natural Science Foundation (No. 11040606Q06), the Provincial Project of Natural Science Research for Colleges and Universities of Anhui Province of China (No. KJ2012A003) and the 211 Project of Anhui University.REFERENCE[1]Chang Chun-bo. Design and Realization of the Wireless GrainInformation Monitoring Syestem of Low Power Consumption[D].Taiyuan: Taiyuan University of Technology, 2007 [2]Wang Quan, Chen Jia-lin, Xie Ying, Dai Jian-bo, Liu Chao. “Designand Implementation of Industrial Field ZigBee handheld Controller”, Journal of Microcomputer Information, Vol.25,No.5-2,2009[3]Wang Quan,Wang Jing-chuan,Wei Min,Chen Jia-lin. “Design andImplementation of Industrial Wireless Handheld Operator”,Journal of Industrial Control Computer, Vol.22,No.6,2009[4]Zheng Li-hua,Ling Qing-nian,Li Lu-wei. “The Design of Handset Basedon Industrial Wireless Network”,Journal of Electrical Measurement & Instrumentation,Vol.47,NO.536A, 2010[5]Jiang Xiao, Bei Jiang, Kan Jiang-ming, “Design of Wirelss Temperatureand Humidity Monitoring System of the Intelligent Greenhouse,”ICCET.Beijing, pp. 59-63 V3.April 2010[6]Rui Zhao, Kaixue Yao, Meng Wei. “The Research and Design ofEngine Room Temperature and Humidity Remote Monitoring System Based on GPRS,”IHMSC.Guiyang.pp.219-222. August 2011[7]Jifeng Ding, Jiyin Zhao, Biao Ma. “Remote monitoring system oftemperature and humidity based on GSM,”CISP.Dalian, pp.1-4. October 2009[8] Xu lei, Zhang Hong-wei, Li Xiao-hui and Wu Xian-liang. “A Design ofWireless Temperature and Humidity Monitoring System,”ICCT. Hefei, pp. 13-16. November 2010[9]Yingli Zhu, Wanghui Zeng and Lingqing Xie. “Design of MonitoringSystem for Coal Mine Safty Based on MSP430 and nRF905,”ISIE.Nanchang, pp. 98-101.October 2011[10]Dou Niu, Yan Zhang, Yanjuan Zhao, Mei Yang, “Research on RoutingProtocols in Ad Hoc Networks,” WNIS. Jilin, pp.27-30. October 2009。
基于ARM的陀螺仪测控系统的设计与实现孙丽萍丁超王永梁（清华大学精密仪器与机械学系北京 100084）摘要：本文设计了基于ARM核的32位微处理芯片S3C44B0X的陀螺仪测控系统，采用µClinux 操作系统，完成了对陀螺仪各项参数的测量、传输、显示、修改和故障报警等功能，实现了对陀螺仪的监测和控制。
关键词：测控系统；ARM；陀螺仪；µClinux中图分类号：TP273+.5文献标识码：BDesign & Realization of measure and control system in gyro based on ARMSUN Li-ping, DING Chao, WANG Yong-liang（Department of Precision Instruments and Mechanology of Tsinghua University,Beijing100084,China）Abstract: A kind of measure and control system in gyro based on 32-bit ARM chip S3C44B0X and µClinux operating system has been designed in this paper. The measure, transfers, display, amending of parameters of gyro, monitoring and alarm function have been accomplished in the design. Through this design, the inspection and control of gyro have been realized.Key words: monitoring system; ARM; gyro; µClinux1 引言嵌入式系统是以嵌入式计算机为技术核心，面向用户、面向产品、面向应用，软硬件可裁的，适用于对功能、可靠性、成本、体积、功耗等综合性能有严格要求的专用计算机系统。
