基于LabVIEW2012FPGA模式的數據采集和存儲系統摘 要:為了提高數據采集系統精度,減少開發成本,提高開發效率,基于LabVIEW虛擬儀器開發工具研究并設計了一
種數據采集系統。該系統采用FPGA編程模式和網絡流技術實現大批量數據實時傳輸,并對數據進行分析處理和存儲。系
統硬件采用美國NI實時控制器CRIO?9025,實現16路數據可靠采集與存儲。實驗仿真及實際運行結果表明該數據采集系
統能夠精確地對數據進行實時采集以及分析處理,達到了項目要求。
關鍵詞:FPGA;FIFO;網絡流;數據采集系統;SQL數據庫
中圖分類號:TN98?34 文獻標識碼:A 文章編號:1004?373X(2014)14?0142?04
Data acquisition and storage system based on LabVIEW 2012FPGA pattern
WANG Shu?dong1,2
,WEI Kong?zhen1
,LI Xiao?pei1
(1. College of Electrical and Information Engineering,Lanzhou University of Technology,Lanzhou 730050,China;
2. Gansu Key Laboratory for Advanced Industrial Process Control,Lanzhou 730050,China)
隨著電磁閥在工業和日常應用的增多,其功耗越來越被人們所重視。通過對電磁閥驅動電路的研究,設計一套電磁閥節能驅動電路。不僅提高了電磁閥的響應時間,更重要的是降低了功耗,使電磁閥由工作在大電流狀態下,變成大電流啟動小電流維持的工作狀態。減少了由電流過大引起的電磁閥線圈過熱,增加了電磁閥的安全性。The power consumption of an electromagnetic valve is drawing increasingly more attentiori as it is widely used in industrial production and daily life. In this study, an energy - saving driving circuit of electromagnetic valves was designed. It can make an electromagnetic valve to start with a high current while work with a low current; thereby the power consumption can be reduced. Besides, it can shorten the response time of an electromagnetic valve and improve the security of the valve.
介紹一種萬能模擬信號輸入采集電路,可以同時支持電壓、電流、熱電偶、熱電阻等常見的工業類型信號,方便后級電路的測量。該研究成果通過不斷優化和完善,已成功應用到了中控儀表的新產品中。The paper introduces a collection circuit of universal signal input. The circuit support voltage, current, thermocouple, thermal resistance and other common industrial type signal. The research results, which has been continuous optimized and improved, has been successfully applied to the new production of Zhejiang Supcon Instrument Co., Ltd.
超聲波換能器作為一種實用的檢測手段,能實現聲波所攜帶的信息和電能之間轉換。它的性能優良,價格低廉,操作方便,易于調試,因此在工農業生產中發揮著重要的作用。但目前換能器驅動電路的發射頻率多為40 kHz,本文針對1 MHz的超聲波換能器電路進行了設計,主要介紹了它的發射驅動電路和接收驅動電路的設計方案,并對它們的功能進行了詳細地說明。最后搭建實驗平臺,并對電路的輸入、輸出模塊進行了測試。實驗結果表明,換能器電路運行良好,可以為超聲波高精度測量領域的應用提供參考。As a practical means of detection, ultrasonic transducer can realize the conversion between theinformation carried by sound wave and electric energy.It has the advantages of excellent performance,low cost, convenient operation and debugging, so plays an important role in industrial and agriculturalproduction.However, the transmitting frequency of the driving circuit for most transducer is 40 kHz.Thecircuit of 1 MHz ultrasonic transducer is designed In this paper. It mainly introduces the emissive drivingcircuit and the receiving circuit design and the detailed function of them. Finally, the experimentalplatform is built, and the circuit of input and output were tested. Experiments show that the transducer' s...
這是一本英文版的MPC的MATLAB教程,講這一塊的資料太少了,故上傳一本。MPC is one of the few areas that has received on-going interest from researchers in both the industrial and cademic communities.Four major aspects of model predictive control make the design methodology attractive to both practitioners and academics.This is particularly attractive to industry where tight profit margins and limits on the process operation are inevitably present. The third aspect is the ability to perform on-line process optimization. The fourth aspect is the simplicity of the design framework in handling all these complex issues.
sony CMOS傳感器datasheet,IMX178LQJ-C_Data_SheetDescriptionThe IMX178LQJ-C is a diagonal 8.92 mm (Type 1/1.8) CMOS active pixel type image sensor with a square pixelarray and 6.44 M effective pixels. This chip operates with analog 2.9 V, digital 1.2 V and interface 1.8 V triple powersupply, and has low power consumption.High sensitivity, low dark current and no smear are achieved through the adoption of R, G and B primary colormosaic filters.This chip features an electronic shutter with variable charge-integration time.(Applications: Surveillance cameras, FA cameras, Industrial cameras)
Spartane-6 LXand LXT FPGAs are available in various speed grades, with -3 having the highest performance. The DC and AC electrical parameters of the Automotive XA Spartan-6 FPGAs and Defense-grade Spartan-6Q FPGAs devices are equivalent to the commercial specifications except where noted. The timing characteristics of the commercial(XC)-2 speed grade industrial device are the same as for a-2 speed grade commercial device. The -2Q and -3Q speed grades are exclusively for the expanded(Q) temperature range. The timing characteristics are equivalent to those shown for the-2 and-3speed grades for the Automotive and Defense-grade devices.Spartan-6 FPGA DC and AC characteristics are specified for commercial (C), industrial (), and expanded (Q) temperature ranges. Only selected speed grades and/or devices might be available in the industrial or expanded temperature ranges for Automotive and Defense-grade devices.