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Long Range Wireless Mesh Network System

Long Range Wireless Mesh Network System. Team 4B Kyle Sparger Jason Easterlund Francis Koskei. Sponsors: Ryan Ashbaugh Paul Heerwagen from Red River Automation. Project Description.

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Long Range Wireless Mesh Network System

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  1. Long Range Wireless Mesh Network System Team 4B Kyle Sparger Jason Easterlund Francis Koskei Sponsors: Ryan Ashbaugh Paul Heerwagen from Red River Automation

  2. Project Description • Wireless mesh network which will interface with a Yaskawa F7 VSD (Variable Speed Drive), which controls a pumping unit. • The VSDs will be scattered across large fields with distances up to 20 miles between them. • The VSDs will be monitored and controlled from a central station (head-in unit). • This station will have a high speed internet connection to allow remote monitoring of the site.

  3. Wireless Unit Free non-licensed frequency range (900MHz) Temperature up to 70° C Range up to 20 miles $100 per unit Ideally 120-240VAC 50/60Hz or 24VDC Use RS485 for serial communication with VSD Use FHSS for security Support up to 300 devices Peer-to-peer networking Software Intuitive GUI interface Capable of controlling all VSDs Capable of monitoring all VSDs Show alerts if a VSD shuts down (within 10 min) Programmable data collection rate Remote Accessibility (over Internet) Run on Windows machines Requirements

  4. Flowchart I (uP)

  5. Flowchart II (PC)

  6. Functional Block Diagram

  7. Labor Costs • With a Yearly Salary $60,000 • And an Overhead Rate of 85% • The Effective Cost is $53.37 per hour • Estimated Overall Labor Cost: $25,404.12 • Actual Overall Labor Cost: $25137.27 • The Cost Difference is: -$266.85 • The Hour Difference is: 5 hours

  8. The total cost of parts for development was $436.69 The breakdown of the cost per part can be seen in the table to the left Parts Cost for Development

  9. Parts Cost for Maximum Configuration

  10. Parts Cost for Minimum Configuration

  11. Schedule (Gantt Chart)

  12. Results • Ability to read and write (local) the VSD registers • Communication over wireless link using AC4790 transceivers • GUI interface monitors VSD register values over the wireless link • Does not send alert if value is out of range • Code in place, but not tested (time issue) • No Mesh networking (time issue) • Only point-to-point

  13. Recommendations • Program uP with C • Easier to debug • Faster to develop • Better portability • Add better error handling • Timeout feature for sending/receiving • Send error message if communication with VSD stops • Develop a PCB for the project • Develop routing protocol for mesh networking capability. • Be aware of misleading documentation for AC4790

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