UVIC Group #12

 

Self Powered

Wind Sensor

Sponsored by: AXYS Technologies and Environmental Systems

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PROJECT DESCRIPTION

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Upcoming Events and Deadlines

January 12th, 2005

  • First Class Meeting, Elliot 062, 6 - 7pm. Deadline for submission of approved project.

January 17th, 2005

  • Progress Report #1 is due.

March 2nd, 2005

  • Midterm Review Meeting, Elliot 062, 6 - 7pm.

March 7th, 2005

  • Progress Report #2 is due.

April 1st, 2005

  • Poster Presentation and Project Demonstration       4pm Engineering Building Lobby.

April 8th, 2005

  • Final Report and Web design is to be due.

Project Description

The RM young Model 05103 Wind speed and direction data acquisition sensor is currently supplied power from an external source via electrical cables. AXYS Environmental Systems has an immediate need for a wireless smart self-powered sensor. The RM Young sensor provides an alternating voltage and frequency proportional to the wind speed. A microcontroller will sample this signal to determine the wind speed and direction. This part of the project will be worked on by UVIC team Whirl Wind Metering. BSS2 must determine a method of harnessing the transducers output power from the sensor and storing it in a device to supply power to the microcontroller and associated interface hardware for the system to become wireless.  The system must be able to operate in varying weather conditions (-40 to +85C) and a battery must be researched that can operate in these type of extreme conditions.

Project Scope

To determine if the RM young model 05103-wind sensor has the capability of being a self powered unit. If it has, then a charge storage device capable of containing enough power to run the microprocessor, potentiometer, and transceiver will be introduced along with a charging and switching regulation circuit to accommodate it. If the sensor does not have the capabilities to power itself, then other means of power (solar) will be investigated.

Project Solution

The RM Young 05103 must first be tested to find its power output for the range of wind speed that it will be operating in (0-60 m/s on average for the Victoria region). If there is insufficient power for the system (i.e. the average wind speed is not enough to charge a cell), a solar panel may be used by itself or in conjunction with the power generated by the sensor to power the data acquisition system. To achieve this, the sensor will be taken to a wind tunnel and the output power will be monitored for various known wind speeds. These tests will clearly demonstrate whether or not the sensor is capable of powering itself. The RM Young 05103 outputs a varying sine wave. This signal will need to be rectified and regulated to a DC level to supply the microcontroller and associated hardware. All available power will be delivered to the battery. A high efficiency-switching regulator is envisioned as one of the major components in the design to ensure minimum power loss through the regulation stage.

Project Outline

Assigned Tasks
Research & Testing (Darren, J.F., Paul)
  -Feasibility of using transducer signal for power source
  -Testing maximum signal output from wind sensor
  -Investigate loading effects of the circuit

Battery
  -Investigate various battery types; (Darren)

Charging System
  -Investigate different charging systems; (J.F. Paul)
  -Design of charging circuit to meet specifications; (Paul)

Signal Conditioning
  -Rectification circuit design; (J.F.)
  -Regulation circuit design; (Darren)
  -Testing & troubleshooting of signal conditioning; (Darren, J.F., Paul)

Alternative Power (Solar Panel)
  -Investigate alternative power; (Darren, J.F., Paul)

Design of Hardware interface circuit
  -PCB Layout (joint with the BSS1 group); (Darren, J.F., Paul)

Testing of the Charging system
  -(Darren, J.F., Paul)

 

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