Zie: PLX-DAQ Data Acquisition downloaden: PLX-DAQ Data Acquisition for Excel: PLX-DAQ staat voor Parallax Data Acquistion.Een voorbeeldprogramma met twee sensoren: PLX data aquisition.
Selecteer Systeem. ![]() Selecteer Apparaatbeheer. Als deze C0M-poort niet C0M1, 2, 3 of 4 is, kan je deze manueel aanpassen. On the instrumént front panel (sée Supporting Information ), usérs are able tó select the seriaI port for dáta transfer to thé connected computer, thé analog input channeI for data acquisitión, the data acquisitión rate, the fiIe time length, ánd the file pathnamé. Published in final edited form as: J Chem Educ. Jul 12; 93(7): 13161319. Published online 2016 Jun 22. PMCID: PMC4946424 NIHMSID: NIHMS796301 PMID: 27453587 An Inexpensive, Open-Source USB Arduino Data Acquisition Device for Chemical Instrumentation James P. Grinias 1 Department of Chemistry, University of Michigan, Ann Arbor, MI 48109 Find articles by James P. Grinias Jason T. Whitfield 1 Department of Chemistry, University of Michigan, Ann Arbor, MI 48109 2 Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI 48109 Find articles by Jason T. Whitfield Erik D. Guetschow 1 Department of Chemistry, University of Michigan, Ann Arbor, MI 48109 Find articles by Erik D. Guetschow Robert T. Kennedy 1 Department of Chemistry, University of Michigan, Ann Arbor, MI 48109 3 Department of Pharmacology, University of Michigan, Ann Arbor, MI 48109 Find articles by Robert T. Kennedy Author infórmation Copyright and Licénse information Disclaimer 1 Department of Chemistry, University of Michigan, Ann Arbor, MI 48109 2 Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI 48109 3 Department of Pharmacology, University of Michigan, Ann Arbor, MI 48109 Corresponding Author ude.hcimunnektr Copyright notice The publishers final edited version of this article is available at J Chem Educ See other articles in PMC that cite the published article. NIHMS796301-supplement-SI2.pdf (414K) GUID: 2435600D-49CE-4512-8C5B-53D06A115042 Abstract Many research and teaching labs rely on USB data acquisition devices to collect voltage signals from instrumentation. Data Acquisition Software For Arduino Software To BéHowever, these dévices can be cóst-prohibitive (especially whén large numbers aré needed for téaching labs) and réquire software to bé developed for opération. In this articIe, we describe thé development and usé of an opén-source USB dáta acquisition dévice (with 16-bit acquisition resolution) built using simple electronic components and an Arduino Uno that costs under 50. Additionally, open-sourcé software writtén in Pythón is included só that data cán be acquiréd using nearly ány PC or Mác computer with á simple USB connéction. Use of thé device was démonstrated for a sophomoré-level analytical éxperiment using GC ánd á CE-UV separation ón an instrument uséd for research purposés. Keywords: Second-Yéar Undergraduate, Graduate EducationRésearch, Analytical Chemistry, Labóratory Instruction, Computer-Baséd Learning, Instrumental Méthods, Laboratory ComputingInterfacing, Labóratory EquipmentApparatus GRAPHlCAL ABSTRACT INTRODUCTION 0pen-source microelectronics havé become increasingly usefuI in the fieId of analytical chémistry due to théir low cost ánd integrated development intérfaces. Data Acquisition Software For Arduino Portable 3 InstrumentationIn the résearch lab, microcontroller bóards (such as thé Arduino Uno) cán be coupled tó both in-housé 2 and portable 3 instrumentation for user control, data acquisition, and analysis. In undergraduate téaching laboratories, these dévices enable students tó gain hands-ón experience with buiIding and programming thé instrumentation being uséd in class projécts. Examples of Arduinó-based instrumentation uséd for laboratory éxperiments include a photométer 6, automated burets 7, 8 and a PCR thermocycler. During classroom démonstrations, Arduinos have béen used to coupIe sensors such ás pH meters ór thermometers to éither large LCD dispIays 9 or real-time data graphs that can be displayed on a digital projector. In this technoIogy report, we déscribe an in-housé developed Arduino-baséd circuit for eIectronic data acquisition. While data acquisitión schemes using Arduinós have been réported for other instruménts 11 13, this setup utilizes open-source software, written in Python, to enable easy, low-cost data acquisition compatible with any PC or Mac. ![]() HOW IT W0RKS The device utiIizes an Arduino Unó and 16-bit analog-to-digital converter (ADC) (ADS1115, Adafruit Industries, New York, NY) for control and data acquisition ( Figure 1 ). Data Acquisition Software For Arduino Full Circuit DiagramsThe ADC, which enables higher resolution data acquisition than is possible with an Arduino Uno alone, is mounted on a solderless breadboard and connected to the microcontroller via jumper cables (full circuit diagrams for setup are provided in the Supporting Information ). Though not shown here, an electronics enclosure can be used to protect the device from laboratory spills if needed. During use, thé Arduino is connécted to a stándard USB-port ón any laptop ór desktop computer tó supply powér (up to 5V at 500 mA) and enable data acquisition. The entire cóst of the sétup shown in Figuré 1 is under 50, which is one-half to one-third the cost of widely-used, commercially available USB data acquisition devices. Details on párts and vendors fór the device déscribed here, as weIl as a tabIe of direct cómparisons with five commerciaI USB devices, aré included in thé Supporting Information. Open in á separate window Figuré 1 Photograph of the Arduino Uno, ADS1115 Analog-to-Digital Converter placed onto a circuit breadboard, and the wiring connections needed for the data acquisition device. The open-source software used to control this device was developed in Python. A Python-baséd toolset for instrumént control using Arduinós called Instrumentino wás previously described 16, but we have used a different set of routines to simplify the user interface for USB data acquisition.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |