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Stephen Copeland, Xau Moua, Joseph Lane Client: Doug Taylor, John Deere Renewables Advisors: Dr. Manimaran Govindarasu, Dr.Venkataramana Ajjarapu Small scout towers capable of wirelessly transmitting measurements to large MET towers. Wireless communication via radio transceivers on scout tower and MET tower. Built-in mesh networking protocol The range of the transceiver must be minimum 2km Network shall use mesh network protocol Data shall be sent home once a day Data logged on tower’s own memory All components housed in a NEMA4 enclosure Network shall be self healing Wireless signal shall penetrate rough terrain Wireless signal shall withstand various precipitation Transceiver shall be plug and play ½ Wave Dipole Antenna Yagi Antenna Array • Approx 2.1 db gain • Approx 10 db gain • Omni-directional • Single directional Radiation Patterns Microcontroller Advantages Disadvantages Development platform for LPC2148 Powerful processor Feature rich Lots of memory Socket for storage Built in accelerometer Highest price Less support base Development board for PIC18F4550 USB programmable Feature rich Multiple coding languages Abundant support Not as easy to code as others Arduino Lowest cost Massive base of supporters Very simple coding Very modular Least feature rich Slowest processor Current use of cell towers or satellite communication M4 Wind Services for Rotor Redline Terrain can attenuate wireless signal Topology could create bottlenecks in network Climate could stress the operability of components Limited access to information Risks Mitigation •Unforeseeable terrain •Consider various terrains obstacles and weather conditions for •Harsh weather conditions testing •Data logger interface • Use of NEMA-4 enclosure • Simulate data logger with computer Milestones • 4/17 – Ordered technology components • 4/23 – Finalized design report • 4/25 – Completed initial testing (devices functioning) • 9/27 – Completed all primary performance study testing • 10/22 – Completed secondary testing (interface w/ data logger) • 11/26 – Completed final testing (field & performance) Item Estimated Cost Campbell CR1000 Contributor $1,700.00 John Deere $400.00 John Deere 32MB Compact Flash Card $50.00 John Deere Compact Flash Card reader for USB port $35.00 John Deere Serial to USB cable $50.00 John Deere Anemometer $295.00 John Deere Wind Vane $245.00 John Deere $95.00 John Deere $325.00 John Deere XBee-PRO DigiMesh 900 Transceiver $45.00 ISU Arduino Microcontroller Board for Testing $40.00 ISU 4XAA Battery Holder $2.00 ISU Adjustable Voltage Regulator $2.00 ISU NEMA 4 Enclosure $15.00 ISU Antenna $20.00 ISU Cables $50.00 John Deere Modbus software for Nomad 2 SCADA connection Thermistor (Temperature Sensor) SETRA Barometric Pressure Transducer Total price = $3369.00 Labor Costs (@$20/hr) = $18,200 XBee-PRO DigiMesh 900 Transmit Power 50mW 6 miles (w/ High gain antenna) LOS Range Built in mesh Cost Pros Cons Yes $45.00 Build in mesh protocol Scalable and interoperable w/ devices from different vendors UHF can penetrate dense forestry Self-healing and discovery for stability XBee-PRO DigiMesh 900 Transceiver 7" ½ wave dipole, bulkhead mount, RPSMA connector • Approx 2.1 dB gain • Up to 3 km RF LOS range • Inexpensive • Omni-directional Range ◦ various locations on campus Power consumption ◦ Use of LabView and multi meters to measure current and voltage levels Microcontroller ◦ Basic data communication ◦ Message integrity ◦ Throughput Message length Throughput Transmitio n time Self Healing ◦ Selected modules turned off during transmission Security ◦ Channel hopping, Encryption Latency ◦ Receiving rate vs. data size Casing ◦ Shock, vibration, realistic impact, and contact with water, ice, and snow. Microcontroller and transceiver connected and programmed for basic communication Computers used as data logger interface Omni directional antenna connected to transceiver 4xAA battery pack connected as power supply Wireless communication up to 0.5 Km outdoors in line of sight. Indoor testing in Coover too many obstacles Drop-in networking Transceivers and antennas received Documentation Finalized Proposal for acquisition of used sensors Initial communication testing More unit and system level testing is required Joe • Transceiver testing • Microcontroller testing • Hardware assembly • Research & Documentation Xau • Antenna analysis • Hardware assembly • Research & Documentation Stephen • Weekly reports • Hardware assembly • System level testing • Research & Documentation Member Contributions Joe Xau Stephen Parts provided by John Deere and others ◦ If provided, system level testing Extensive testing throughout summer ‘10 Simulated or actual data logger integration Any Questions?