Senior Seminar:Journal

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Contents 1 September 2nd-3rd 1.1 Data logging equipment 1.2 Pulse Counters 2 September 5th 2.1 Homebrewed Monitoring 2.2 Sensors 2.3 Home Automation 2.4 Current Transformers 3 Semptember 9th-10th 3.1 Watt-Hour Sensors 3.1.1 WattNode 3.1.2 SA9105EFA 3.2 Split Core Current Transformers 3.3 Sensor/Logging Chart

September 2nd-3rd

Data logging equipment

Product	Price	Storage	RAM	A2D	Ethernet	WiFi	Features
TS-7260	$179.00	32MB flash drive	32MB	I think so	Yes	Optional	XDIO*
robostix-cf pack	$199.00	flash drive	16MB	Yes	Optional	Optional
QCard	$149.00	512K flash	128K	Yes	Optional	No	pulse accumulator

Pulse Counters

• TAI8586 Pulse counter
  • 1-Wire counter module
• WTPCT-M Pulse counter
  • RS-232 interface
• TS-XDIO - Extended Digital I/O
  • This core is designed to implement common controller tasks that are difficult, costly (CPU intensive), or impossible to accomplish in software with regular DIO / GPIO hardware and the facilities of the 200Mhz ARM processor. The TS-XDIO core is a GPIO core with "eXtended Digital I/O" functionality including pulse-width modulation, quadrature and edge counting, and pulse timing with IRQ/DRQ support. Link

September 5th

Homebrewed Monitoring

• bwired.nl - Home Automation in the Netherlands
  • monitors everything from electricity to how many toilet flushes and fridge door openings
• Building a Home Power Monitoring System
  • some guy installing a home brewed system with current tranducers
  • really epensive equipment
• Power Line Monitor
  • transformers are made from split ferrite cores, clamped together by nylon hardware

Sensors

• Lab Jack
  • USB data acquisition and control device (has Linux drives too)
  • Analog inputs/outputs, digital input/output, timers, and counters
  • $99.00 (there's an educational discount, but I can't find that price listed)
• Veris
  • Veris offers a complete line of analog and digital current switches/sensors for status monitoring and load trending applications.
  • expensive stuff, but some cool products
• 1-Wire Sensors
  • Embedded Data Systems

Home Automation

• Linux Home Automation
  • tons of useful links

Current Transformers

• Exploring Current Transformer Applications
  • general information, on the physics side, includes info on burden resistors
• Coil Winder

Semptember 9th-10th

Watt-Hour Sensors

WattNode

• Description: true RMS AC watt-hour transducer with pulse output (solid state relay closure) proportional to kWH consumed.
• Price: $160 plus CTs
• [Link]

SA9105EFA

• This is what's inside the WattNode.
• Description: Three phase unidirectional power/energy metering IC with pulse output in 40-pin DIP (Dual in-line package) package.
• Datasheet

Split Core Current Transformers

• Price: $44 each
• 2 for WattNode

Sensor/Logging Chart