The Aeolus 3000

1
The Aeolus 3000

• David Baker
• James Brooks
• Nelson Llewellyn
• Josh Moore
• Ben Sievers

2
Introduction

• Background
• Why do we need another weather monitoring system?
• Objectives
• Inexpensive
• Accessible
• Modular
• Easily Configurable
• Accurate

3
System Overview
4
Major Components

• David Baker Sensors
• James Brooks Power Supply
• Josh Moore Sensor Interface Unit
• Nelson Llewellyn Server Software
• Ben Sievers Web Interface

5
Sensors

• Five different sensors designed for prototype
• Temperature, Pressure, Humidity, Wind speed and
  Wind Direction
• Most will have an analog output that will run
  into its own A/D converter (ADC08831)
• Will be connected by a standard Ethernet cable
• Temperature sensor

6
Sensor Interface Unit

• Responsible for collecting Sensor Data and
  transmitting it to the server.
• Receive sensor data over a serial connection.
• Each sensor type will have a 4-bit ID
• Ethernet port for TCP/IP communication

7
Sensor Interface Unit Cont.

• Rabbit 3000 Microprocessor
• 6 Asynchronous Serial Ports
• 56 Shared Digital I/O Lines plenty for IDs
• Operates at 29.5 MHz and has low-power modes
• Onboard Ethernet Port
• Development Kit (300) includes C compiler and
  TCP/IP stack

8
Server

• Socket Communications
• Server Program Flow

9
Socket Communications
10
Server Program Flow
11
Web Interface

• Implemented using ASP code
• Query made using a SQL statement
• Test database set up by column, real data will be
  coming in by rows
• Alternatives to ASP and Microsoft IIS
• Improvements to the current implementation

12
Power

• Server Standard
• Sensor Interface Unit
• Solar Powered
• Minimum Array Size 22.3 in2
• Minimum Output 2.67 Wh/day
• Batteries
• Minimum Capacity 485mAh

13
Schedule

• What weve accomplished
• Working knowledge of the Rabbit 3000
• Demonstrated A/D conversion
• Demonstrated network communication
• Performed worst case power modeling
• Successfully used ASP to format data for display

14
Schedule Continued

• Immediate Future Plans
• Code basic data acquisition and transmission
  functions for the Rabbit
• Adding database functionality to our server
  program
• Purchase batteries and solar panel
• Purchase pressure and humidity sensors
• Design wind sensors
• Further ASP development

15
Budget

• This compares favorably to our price target of
  1500

16
Conclusions

• Our Design Seems to be Meeting our Objectives
• Rabbit 3000 is a great fit
• We are on Schedule
• Completed our SEED Lab goals without any major
  setbacks
• Under budget