基于多MCU通信的实时数据采集处理系统的设计

提出了一种基于多个MCU通信的实时数据采集处理系统方案，该系统由数据处理单元与多个现场采集器组成，且以点对点的方式串行通信，在数据处理单元内部，各个通道的数据以双CPU并行通信方式进行处理，处理结果以串行方式送入监控主机。实际运行证明，该方案具有良好的实时性。     

基于LabVIEW的高速数据采集系统设计

针对卫星电推进分系统地面测试设备建设方案,开发了配套的数据采集存储系统,其实质上是一个电推进试验的总控平台。采用LabVIEW语言建立上位机的数据采集,能够在前台监控计算机提供人机界面,实现数据的采集、保存,各种波形显示,监测数据和试验状态,在线判读,报警等功能。实际运行表明,该系统数据采集过程稳定、可靠,达到了设计要求。     

基于ZigBee多节点无线温度数据采集系统设计

介绍了一种基于ZigBee技术的多节点无线温度数据采集系统。该系统以CC2530为主控芯片。选用DS18B20作为温度传感器,测温节点将采集的温度数据通过无线的方式发送出去,协调节点以无线的方式接收数据并传送至上位机显示。通过测试表明该系统具有结构简单,功耗低,低成本等特点。     

基于ZigBee技术的工业仪表无线数据采集系统设计

该文以ZigBee技术为基础,针对工业仪表实际运行需要,设计了一种无线数据采集系统。借助数据库以及虚拟仪器技术实现了数据采集、数据处理及存储管理。对设计的系统进行了测试,包括通信距离测试、丢包率测试以及误码率测试。该无线数据采集系统具有功耗低、可靠性高、稳定性好的特点。     

高速采样及恢复系统的设计与实现

数据采集和信号恢复系统是信号与信息处理系统中不可或缺的重要组成部分,是计算机与外部世界联系的桥梁,也是获取信息的重要途径。研究设计了一种高速采集及恢复系统,以芯片ADS830E为采样系统核心,芯片AD9708为恢复系统核心,并对系统进行了测试验证,无明显失真现象。具有采集速率快、存储容量大、传输时延小、稳定性高等优点。     

基于TMS320C6202B的100M超高速数据采集系统

随着数字信号处理技术和计算机技术的不断发展．基于DSP PCI结构的高速数据采集系统将会得到越来越广泛的应用。本文以开发的实际系统为背量。详细论述了DSP和PCI结构的数据采集系统硬件及软件设计方案和实现方法。     

基于ZigBee技术的数据采集系统的设计

作为一种短距离通信技术,ZigBee以其低成本和低功耗成为无线传感器网络的一种理想数据传输方法。基于无线传感器网络的数据采集系统在工农业中有广泛的用途。基于ZigBee协议,设计并实现了无线传感器网络中的终端节点、数据采集节点和系统的监控软件,同时采用ZigBee协议在网络路由的基础上实现了传感器网络的组网和传输。为了保证数据参数的安全性,在无线传感器网络中采用LBlock算法实现受信任的安全协议。实验表明,该数据采集系统能够实时采集和监控多种信息数据。     

Data compression in wireless sensors network using MDCT and embedded harmonic coding

One of the major applications of wireless sensors networks (WSNs) is vibration measurement for the purpose of structural health monitoring and machinery fault diagnosis. WSNs have many advantages over the wired networks such as low cost and reduced setup time. However, the useful bandwidth is limited, as compared to wired networks, resulting in relatively low sampling. One solution to this problem is data compression which, in addition to enhancing sampling rate, saves valuable power of the wireless nodes. In this work, a data compression scheme, based on Modified Discrete Cosine Transform (MDCT) followed by Embedded Harmonic Components Coding (EHCC) is proposed to compress vibration signals. The EHCC is applied to exploit harmonic redundancy present is most vibration signals resulting in improved compression ratio. This scheme is made suitable for the tiny hardware of wireless nodes and it is proved to be fast and effective. The efficiency of the proposed scheme is investigated by conducting several experimental tests.     

基于DAQBench的数据采集系统设计

在工程测量中,数据采集技术是一个非常重要的环节,广泛应用于测控领域。数据采集技术主要研究信息数据的采集、存储、处理以及控制的问题。随着计算机技术的发展,基于计算机的数据采集系统应用越来越广泛,本文设计的是基于DAQBench(Data Acquisition Bench)软件,在VB6.0环境下,结合PCI9112数据采集卡,设计开发的数据采集系统,实现模拟信号的采集、显示、处理以及存储等功能,测试结果显示,该系统可以满足一般工程测试要求。     

专用高速数据采集器的设计方法

本文介绍了一种用于特定场合的高速数据采集器的设计方法,其采样频率为２０ＭＨｚ,分辨率是８位特性的同时还讨论了高速数据采集系统地设计中需要注意的几个问题。     

串接式无线数据传输系统的设计

为了实现复杂环境下的远距离无线数据传输,介绍了一种基于AT89S51单片机和无线射频芯片nRF401的无线数据传输系统的设计,给出了系统的串接式结构、数据串接传输的方法以及各工作点的软硬件设计,并通过VB语言实现传输系统与计算机的通信。该系统结构简单,能耗低,是一种低成本的远距离传输系统,能广泛应用于铁路运输监测、环境监测、工业数据传输等多个领域。     

基于USB的LDT实时数据采集系统设计

基于USB的LDT实时数据采集系统的设计严格遵循USB1．1协议，体现了USB即插即用、易扩展、低干扰的特点，从而实现了主机和多台测试设备之间简单、快速、可靠的连接和通信。介绍了基于USB总线的数据采集设备的硬件设计、设备驱动程序、设备固件、应用程序等设计方法。     

基于嵌入式操作系统的数据采集系统设计

嵌入式产品设备已经深入社会的方方面面,工业监控系统也不例外.本文介绍的一种基于Coldfire硬件平台和uClinux嵌入式操作系统的嵌入式数据采集系统的设计.与传统的基于PCI卡数据采集系统相比,数据可靠,现场施工简单,可用于一般的工业设备监控系统,有广阔的市场前景。     

GPRS based data acquisition and analysis system with mobile phone control

Wireless based data acquisition solutions are the focus of many researchers and have a huge impact in domains like structural analysis, medical telemonitoring, transportation or environmental studies. This paper presents an experimental General Packet Radio Service (GPRS) based remote data acquisition and analysis system which offers mobile phone control possibilities. Sensor voltage variations are sampled by the TI MSP430F2274 microcontroller and transmitted to a Web Server using the Cinterion MC55iT GSM/GPRS terminal. Collected data are available to authorized users, for visual inspection and analysis, by both a LabVIEW application and a mobile phone web interface. If recorded data values exceed established control limits the terminal is automatically instructed to send warning messages via Short Message Service (SMS). Experimental results performed over several weeks prove that the presented instrumentation was properly designed and implemented.     

A real-time data compression algorithm for gear fault signals

A flexible, stable and controllable real-time algorithm of Auto-Regressive and Moving Average based on Swing Door Trending (ARMA-SDT) is proposed for the compression of impact-type signals in gear fault detection systems. The Auto-Regressive and Moving Average (ARMA) model is used to predict the variation trend of signal features. To guarantee the adaptability, an empirical equation is proposed to calculate the compression threshold of the Swing Door Trending (SDT). Based on the empirical equation and prediction results, dynamic self-regulation of compression threshold is realized, and the compression error always stays around a preconfigured value. Moreover, an experimental setup and an engineering solution are proposed to verify the usefulness, reliability, and stability of the proposed ARMA-SDT algorithm in data compression.     

基于声卡的数据采集系统设计

为了充分利用声卡资源,降低成本,设计了本系统。解释了系统的软硬件知识,给出了放大电路,说明了声卡的工作原理,提出了一种解决声卡隔直问题的简单易行的方法,设置了系统参数,用C Builder语言编写的软件可实时显示动态波形,可将信号转存为数据文件进行分析处理。本系统应用于动态称重中,通过实验证明了该技术的可行性。     

采用射频识别的产品生产数据无线采集技术研究

针对实际生产环境下,生产过程难以实现精准管理的问题,采用射频识别标签标识生产线上的产品,在每个加工工位部署射频识别(RFID)读写器,自动、实时、准确和详细地获取车间产品信息。在此基础上,采用C#编程对基于RFID的产品数据采集系统进行了设计,可以通过上位机无线实时地采集产品信息并反映在监控界面上,该系统已成功应用于上海大学机器人重点实验室的生产线,取得了良好的应用效果。     

基于ZigBee的生产车间数据采集系统

针对生产车间中的数据采集问题,对生产车间的设备层和管理层之间的网络通讯协议等方面进行了研究,提出了一种基于Zig Bee无线通信技术的数据采集方案。首先介绍了整个数据采集系统的结构。然后详细介绍了基于CC2530芯片的数据采集节点的硬件设计方法及基于TCP/IP协议的协调器与服务器的通讯协议,最后利用中继节点对系统进行了误码率和丢包率测试实验。研究结果表明:Zig Bee不仅可以实时采集设备的各项数据,而且该系统在远距离数据传输下稳定性好。     

基于CAN总线的嵌入式数据采集系统设计

本文设计了一种基于CAN总线的嵌入式数据采集系统,用于采集石化大型机械的振动信号。介绍了CAN总线的优势,数据采集系统中智能振动传感器和数据采集控制板的硬件结构,以及相应的数据采集软件的设计思想。     

Real-time data acquisition incorporating high-speed software correlator for single-molecule spectroscopy

Single-molecule spectroscopy and detection are powerful techniques for the study of single fluorescent particles and their interaction with their environment. We present a low-cost system for simultaneous real-time acquisition, storage of inter-photon arrival times and the calculation and display of the fluorescence time trace, autocorrelation function and distribution of delays histogram for single-molecule experiments. From a hardware perspective, in addition to a multi-core computer, only a standard low-cost counting board is required as processing is software-based. Software is written in a parallel programming environment with time crucial operations coded in ANSI-C. Crucial to system performance is a simple and efficient real-time autocorrelation algorithm (acf) optimized for the count rates (approximately 10⁴ cps) encountered in single-molecule experiments. The algorithm's time complexity is independent of temporal resolution, which is maintained at all time delays. The system and algorithm's performance was validated by duplicating the signal from the photon detector and sending it to both the ordinary counter board and a commercial correlator simultaneously. The data acquisition system's robustness under typical single-molecule experimental conditions was tested by observing the diffusion of Rhodamine 6G molecules in deionized water.