DC power monitor

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DC power monitor

• Group CCM
• Project 2.5

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EMERSON

• Emerson is a diversified global manufacturing
  company.
• Provides innovative solutions to customers in the
  following areas
• Process Management
• Industrial Automation
  
• Network Power
• Climate Technologies
• Commercial Residential Solutions ? 

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Goal

• Emerson 24Vdc Monitor.
• This device will monitor for 24Vdc. Upon a
  decrease or increase of 5 of 24Vdc the device
  will record.
• Measurements include
• Amplitude of the voltage
• Duration of the change in voltage
• Time at which the change occurred, and provide a
  waveform of the collected data.
• Remote Access

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Why our Solution?

• Current Market
• Low End Does not cover parameters
• Lowest Cost of 200
• Can only Monitor and either, shutoff, or sound
  alarm
• Sample rate is much lower
• High End Prohibit Expensive for purpose
• Highest Cost of up 4000
• Comes with other tools and options not needed
• Comes as an package with other tools
• Bulky

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Required Equipment

• The system we consist of
• The Arduino Uno
• Built in ADC
• Voltage Divider Circuit
• Tested with National Instruments ELVIS Board

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Arduino Uno

• Arduino Uno is ideal for the design due to
• Operating Voltage5V
• Input Voltage 7-12V
• Digital I/O Pins 14
• PWM Digital I/O Pins 6
• Analog Input Pins 6
• Clock Speed 16MHz

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Data Processing

• The Arduino Uno will continuously take voltage
  values using its built in ADC
• A timer is used to schedule interrupts
• The timer is determined by the desired sample
  rate
• When recordings are above or below -5 of the
  threshold voltage (24V) the Arduino will store
  them on the SD card

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Testing the Voltage Monitor

• Using the National Instruments Elvis Board the
  max sampling rate of the system was found to be
  40kHz
• This system accurately captured a signal of 10kHz
  at 40kHz sampling rate.

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Graphs
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Budget

• Arduino Uno 30
• Arduino Logging Shield 20
• Arduino Uno Enclosure 12
• SD Card 15
• Total 77

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Questions ?

• At this point we will entertain questions