EE 296 Sophomore ProjectGroup Members:JimyLeah Castro

Jeremy ChanEric Lee

Sae Yoon

Project Overview

Facilitate remote monitoring through wireless technology, microcontroller programming, sensor interfacing, and analog to digital conversion

Block Diagram

Circuit Design

Pressure Sensor SubsystemTopics

• Sensor

• Attenuator

• Op Amp

• ADC / MCU

MPX4100A Motorola Pressure Sensor

Reading the Sensor

Analog Digital Converter (ADC)

- Reading

- Calculation

- Limitations

Analog Support Systems Attenuation Circuit

Analog Support SystemsUnbuffered Voltage Input

Analog Support SystemsUnbuffered Voltage Input

Analog Support SystemsEffective Unbuffered Voltage

Divider

Analog Support SystemsBuffered Voltage Input

Analog Support SystemsBuffered Voltage Input

ADC Perspective

Analog Support SystemsBuffered vs Unbuffered Signal

Analog Support SystemsEffective Buffered Voltage

Divider

Analog Support Systems MAX232

Analog Support SystemsPressure Sensor Implementation

Zilog Z8F6421 Microcontroller

• Block Diagram

Zilog Z8F6421 MicrocontrollerADC to Voltage: Multiplier Testing

• Block Diagram

Voltage Reading Accuracy

Design Status

MXP4100A Motorolla Pressure Sensor w/ Analog Support System

GPS

Parallax/Sensirion SHT11 Temperature and Humidity Sensor

MAXStream9 RF Modem - OEM

N/AZilog Z8 Encore! Flash Microcontroller

N/APower Supply – 3.3V, 5V,±8.5V

IntegrationSoftware

Driving

TestedModules

Circuit Design Prototype

What Remains to be Done

• Complete Software Integration of Sensors

• Platform Construction

• PCB Design and Construction

• Data Gathering via Telemetry

• Further Documentation

Challenges Foreseen

• Compatibility Issues

•TIME

Project Schedule Update

Thank You