Midterm Presentation Tuesday, February 05, 2002 Who are we? Who - - PowerPoint PPT Presentation

“We watch so you don’t have to.”

Midterm Presentation

Tuesday, February 05, 2002

February 05, 2002 February 05, 2002 2

Who are we? Who are we?

• Nate Distel:

Nate Distel: MCU, Sensors MCU, Sensors

• Solomon Gibbs:

Solomon Gibbs: Linux, Net Code Linux, Net Code

• Max Vilimpoc:

Max Vilimpoc: Serial Code, Linux Serial Code, Linux

• Aravind

Aravind Mikkilenini Mikkilenini: : Linux, Serial Code Linux, Serial Code

• Rich Fouts:

Rich Fouts: Wireless Comm. Wireless Comm.

• Mike

Mike Volkerding Volkerding: : Sensors, Power Sensors, Power

• Pat Stemen:

Pat Stemen: MCU, Organization MCU, Organization

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Graphical View: Graphical View:

PIC 16F877

LM 34

• Var. R

DIP Switches Real Time Clock Abacom Wireless Serial Transmitter

Wireless Sensor Module

Abacom Wireless Serial Transmitter Maxim MAX233 RS-232 Driver DB9 Serial Port Connector

Sensor Data Receiver

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Project Basics Project Basics

• Start With Basics:

Start With Basics:

– – Use PIC MCU with onboard A/D Use PIC MCU with onboard A/D

• Temperature, Resistance sensing

Temperature, Resistance sensing

– – Use Digital I/O on PIC Use Digital I/O on PIC

• Digital On / Off

Digital On / Off – – different uses depending on different uses depending on platform platform

– – Simple Wireless Interface Simple Wireless Interface

• Abacomm

Abacomm 433Mhz Wireless Modules (9600bps / 433Mhz Wireless Modules (9600bps / Simplex) Simplex)

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Project Extras Project Extras

• Use basics to develop unique features

Use basics to develop unique features

– – User Interface Development for various User Interface Development for various platforms platforms – – Work with unique sensors (accelerometers) Work with unique sensors (accelerometers) – – Real Real-

• Time Clock Module

Time Clock Module – – Variable Variable-

• Length Packet Data

Length Packet Data

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User Interface User Interface

Runs Under GTK, Motif, Win32 Runs Under GTK, Motif, Win32

• Written in Cross

Written in Cross-

• Platform

Platform C+ + ( C+ + (wxWindows wxWindows) )

• Connects to Remote host

Connects to Remote host via Serial or IP via Serial or IP

• Currently Working on:

Currently Working on:

– – Improving Parser Improving Parser – – Writing a Custom Data Writing a Custom Data Plotting Widget Plotting Widget

• Plan To Add:

Plan To Add:

– – Remote Control Functions Remote Control Functions – – Data Logging Data Logging

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Sensors / Accelerometer Sensors / Accelerometer

• Analog Devices ADXL202

Analog Devices ADXL202

– – 2 2-

• axis,

axis, ±

±2g sensor sensitive

2g sensor sensitive enough to measure gravity. enough to measure gravity.

– – Integration of this module will

Integration of this module will provide: provide:

• Acceleration

Acceleration

• Velocity

Velocity

• Position

Position

– – Possible applications include:

Possible applications include:

• Realtime

Realtime mapping of operating mapping of operating environment relative to start environment relative to start position (Caldwell Labs) position (Caldwell Labs)

• Absolute position mapping with

Absolute position mapping with GPS interface for initial location GPS interface for initial location reading reading

CL380 CL378

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Wireless Communications Wireless Communications

• TXM Series transmitter and SILRX Series

TXM Series transmitter and SILRX Series Receiver Receiver

• FM Range

FM Range

• 433 MHz

433 MHz

• Supply Voltage 4.5v

Supply Voltage 4.5v – – 9v 9v

• Small Size

Small Size

• Easy to use!!

Easy to use!!

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Data Packets Data Packets

0xA5 0x5A Elapsed Minutes Elapsed Seconds Elapsed Milliseconds #Digital:#Analog Sensors Analog Data (2 bytes each) Digital Data (1 byte each) Checksum 0xFF START Relative Time Sensor Data END

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Moving Forward Moving Forward

• Integrate Accelerometer from Max’s 683

Integrate Accelerometer from Max’s 683 Research Project Research Project

• Looking into solar based power supply

Looking into solar based power supply

– – Use solar panel to charge batteries for Use solar panel to charge batteries for constant power requirements constant power requirements

• Researching other methods to increase

Researching other methods to increase wireless range wireless range

– – Goal: Max range 250 feet Goal: Max range 250 feet