Microcontrolled Irrigation System (MIS)

Microcontrolled Irrigation System (MIS)

College of Technology University of Houston

Senior Project

Team 4:

Sharon Andrus

DucToan Doan

Henry Phan

Wilber Ruano

ELET 4308 Team 4 Slide 1 of 18

Executive SummaryExecutive Summary

n Objective: Design a Useful Innovative Product– Cost effective and environmentally conscious– Time and money saving device

n Research: Existing Watering Systems & Components– Manual and automatic watering systems– Soil and rain sensor components

ELET 4308 Team 4 Slide 2 of 18

Product RequirementsProduct Requirements

ELET 4308 Team 4 Slide 3 of 18

n Theoretical Full System Model– Zoned watering areas – Embedded soil sensors and rain sensor – Control box with 8051 microcontroller

n Add-On Component– Install soil and rain sensor – Replace timer unit with Control Box

Product RequirementsProduct Requirementsn Prototype Model

– Control Board with 8051 Microcontroller– Control Unit Housing– Toro Rain Sensor– Moisture Soil Sensor– RainBird Automatic Sprinkler Valve– Sprinkler Base – RainBird Pop-Up Sprinkler Head

ELET 4308 Team 4 Slide 4 of 18

Design AlternativesDesign Alternatives

n Moisture Soil Sensor– Construct a soil sensor– Cost effective sensor found for $45

n Demonstration Model– Indoor demonstration with 5 gallon water jug– Outdoor demonstration with portable sprinkler

base

ELET 4308 Team 4 Slide 5 of 18

Design AlternativesDesign Alternatives

n Signal Interpretation by the Microcontroller– ADC interpretation– Input port saturation signaling

n Saturation Response Delay– Vantage Pro Moisture Sensor– Team’s moisture soil sensor implemented in

presentation model

ELET 4308 Team 4 Slide 6 of 18

Design SpecificationsDesign Specifications

n Mini-Max 51-C2 8051 Microcontrollern Indicator LED’s (Red, Yellow & Green)n On/Off & Manual Override Switchn PVC Pipe Sprinkler Basen RainBird Pop-Up Sprinklern RainBird Automatic Sprinkler Valven Toro Rain Sensorn Soil Sensor

ELET 4308 Team 4 Slide 7 of 18

Design DescriptionDesign Description

n MIS Control Board

ELET 4308 Team 4 Slide 8 of 18

Design DescriptionDesign Description

Prototype General Block Drawing

0 LQL0 D[ � &0 LFURFRQWUROOHU

6 RLO�6HQVRU

6HULDO�5 HVLVWRU�1HWZRUN

3 HDN�' HWHFWRU 6DIHJXDUG�DQG�$ P SOLILFDWLRQ

5DLQ�6HQVRU 0 DQXDO�2 YHUULGH

,QGLFDWRU�/ ( ' ¶V5HOD\ � 6ZLWFK

: DWHU�9DOYH

,QSXW�' HYLFHV

2XWSXW�' HYLFHV

ELET 4308 Team 4 Slide 9 of 18

Design DescriptionDesign Description

MIS Programming Algorithm

ELET 4308 Team 4 Slide 10 of 18

Construction DetailsConstruction Details

n Control Unit Housing

n Sprinkler Base

ELET 4308 Team 4 Slide 11 of 18

ELET 4308 Team 4 Slide 12 of 18

Construction DetailsConstruction Details

Verification & TestingVerification & Testing

n Component Testing – Relay Switch & Peak Detector Circuits – Rain & Soil Sensor

n Full System Testing – Simulated Full System Test– Full System Tests

n Integration Tests – Microcontroller & Automatic Sprinkler Valve

ELET 4308 Team 4 Slide 13 of 18

ELET 4308 Team 4 Slide 14 of 18

Verification & TestingVerification & Testing

CostsCosts

ELET 4308 Team 4 Slide 15of 18

n Parts Total Cost $ 224.67– Home Depot, EPO, Discount Awards– Hardware, electrical components donated by team

members– Component nameplates, parts and labor donated

by John Tedesco

n Labor Total Cost $ 25,987.50– Labor to build electrical circuitry– Labor to build prototype model– Labor to complete the paperwork and

documentation– Total of 866.25 labor hours @ $30.00 per hour

CostsCostsn Tools & Lab Equipment Cost $ 4333.44

– Meters, power supplies, oscilloscope, PC– Table saw, drill, soldering kit and other tools

• Calculating $800 worth of Travel Expenses incurred byteam members

Total Cost $ 31,345.61

ELET 4308 Team 4 Slide 16of 18

Project Cost Comparison

Parts

Equipment

Labor

Travel

14.4%0.75%14.4%

82.2%

2.65% 0.75%2.65%

82.2%

ConclusionsConclusionsn Project was completed a week ahead of schedule

with few delaysn Setback due to performance of soil sensorn Testing revealed design flaws that caused system

adjustments to be made

ELET 4308 Team 4 Slide 17 of 18

n Follow-up project includes installation of full systemat team members home as time and money allow

n Due to the power of the capability of the 8051 Microcontroller system upgrades in the future are almost limitless

Questions & CommentsQuestions & Comments

ELET 4308 Team 4 Slide 18 of 18