Web-Based Access of a Power Quality Data Acquisition Device

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Web-Based Access of a Power Quality Data
Acquisition Device

• Final Presentation

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Team Members
Glenn Wilson
Dr. Mark Halpin
Team Advisor
Debugger Web Page Software Research Design
Jason Koberger True RMS meter Research
Design Hardware Testing Simulation
Melissa Wilson Team Leader True RMS
meter Research, Design Simulation
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Overview

• Hardware
• Modified Current Data Acquisition Device
• Added 8 Channel Multimeter
• 4 voltmeter channels
• 4 current meter channels
• Added Tri-Status Signal Indicator
• Software
• Insert Real-Time Data Logs into Web Database
• Created Dynamic Charting Tool for the Web

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HARDWARE
Overview
Microprocessor Controls 8-input Mux 8 LEDs To
Indicate Which Channel Is Currently Selected.
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HARDWARE REQUIREMENTS

• Display Resolution of 1V from 1V to 480V
• 1V Accuracy over 0-50º C
• Costs Not to Exceed 50.00

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HARDWARE

• RMS Meter Circuitry

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HARDWARE

• Accuracy Results

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HARDWARE

• Accuracy Results

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HARDWARE

• Temperature Results

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HARDWARE

• Signal Switching Tri-State Status Circuitry

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HARDWARE

• Switching Integration for RMS Meter

Switching Board selects the proper channel and
sends it to an output.
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COSTS
 
Simulation Cost 43.65 12.7 below
constraint Prototype/Packaged Cost
46.59 6.8 below constraint
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SOFTWARE

• Overview

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SOFTWARE REQUIREMENTS

• Up To Date Within 1 minute
• Uses Existing Data Acquisition Log
• Readings Accessible on the Web
• User Can Generate Graphs

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SOFTWARE REQUIREMENTS

• Use Existing DAQ Log
• Log file data can change
• Log file is must be read while written
• Individual data is not time-stamped

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SOFTWARE

• Data Acquisition Log Converter

This particular execution scans the log file
every 45 seconds for new data and inserts the
data into the selected database. It assigns a
Session ID and a Device ID to each record so
that multiple devices can be used simultaneously.
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SOFTWARE

• Web Access

The Web-Interface can be used to directly query
the database and generate graphs that are up to
the minute.
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QUESTIONS?