stream depth gauge
Download
Skip this Video
Download Presentation
Stream Depth Gauge

Loading in 2 Seconds...

play fullscreen
1 / 29

Stream Depth Gauge - PowerPoint PPT Presentation


  • 138 Views
  • Uploaded on

Stream Depth Gauge. Team: SDMAY 12-23. Team Members John Henderson Curt LaBarge Greg Pearson Yixin Qiao. Client/Advisor Steve Holland (ISU Canoe and Kayak Club). Project Goal. Design and build a low-cost stream depth gauge The gauge should be: Self contained

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Stream Depth Gauge' - neviah


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
stream depth gauge

Stream Depth Gauge

Team: SDMAY 12-23

Team Members

John Henderson

Curt LaBarge

Greg Pearson

Yixin Qiao

Client/Advisor

Steve Holland

(ISU Canoe and Kayak Club)

project goal
Project Goal

Design and build a low-cost stream depth gauge

The gauge should be:

  • Self contained
  • Robust in the environment
  • Low maintenance
  • Low power
  • Capable of transmitting measurements wirelessly

SDMAY12-23

problems
Problems

Iowa flow levels change dramatically

  • Current gauging strategies are inadequate
    • High Maintenance
    • At threat of cancelation
    • Cover a limited amount of streams and rivers
  • Canoers and Kayakers need easy access to flow data to accurately plan trips
  • Some waterways are currently not monitored

Photo Credits: ISU Canoe and Kayak Club

SDMAY12-23

united states geological survey
United States Geological Survey

Expensive

  • $5,000/yr to maintain

Complex Design

  • Stilling basin
  • Two story structure
  • Under ground pipes
  • Electronic recorder

Typical USGS Gauge Design

Photo Credit: USGS http://ga.water.usgs.gov/edu/streamflow1.html

SDMAY12-23

functional specifications
Functional Specifications
  • Total Price of Materials < $500
  • Measurement Accuracy: 1inch
  • Operating Temp: -5°C to 70°C
  • Survivable Temp: -40°C to 70°C
  • Daily data transmission
  • Power save during winter

SDMAY12-23

weather conditions
Weather Conditions

Our design must withstand the following:

High Winds

Floods

Rain

Snow

Ice

SDMAY12-23

Photo Credits last slide

river conditions
River Conditions
  • Any object placed directly in body of water must withstand the following conditions:

Ice formations

Other Floating debris

SDMAY12-23

Photo Credits last slide

non functional specifications
Non Functional Specifications
  • Low maintenance cost
  • Long battery life
    • Minimum: 1 yr
  • Rugged design

SDMAY12-23

sensor options
Sensor Options

Possible Choices:

  • Ultrasonic range sensor
  • Float System
  • Water Pressure Sensor
  • Air Pressure Sensor
    • Absolute
    • Differential

SDMAY12-23

sensor options1
Sensor Options
  • List of Choices:
    • Ultrasonic range sensor
    • Basic Float System–Moving parts easily break!
    • Water Pressure Sensor - Too expensive !
    • Air Pressure Sensor
      • Absolute – Not as simple as differential option
      • Differential

SDMAY12-23

sensor options2
Sensor Options

SDMAY12-23

choosing a sensor
Choosing a Sensor

Best option: Differential Air Pressure Sensor

  • Why?
    • The sensor costs 1/10th of the ultrasonic sensor
    • Can be placed underwater instead of above it
    • Could be buried under sand
      • Sand can be used to protect the sensor
    • Leaves the team with more installation options and configurations

SDMAY12-23

under water housing concept and design
Under Water HousingConcept and Design
  • Water level is proportional to air pressure inside cylinder
  • As water depth over cylinder increases, so does air pressure
  • Housing and tubing buried under a sand bank for added protection against floating debris

AIR

Tube to Pressure Sensor

SDMAY12-23

concept diagram

Battery

Concept Diagram

Microcontroller

Pressure Sensor

Cell Module

Water

Voltage Regulator

Voltage Regulator

Voltage Regulator

Power Bus

Air

Solar Cell

Charging Circuit

SDMAY12-23

concept diagram1
Concept Diagram

SDMAY12-23

microcontroller
Microcontroller
  • The team will use the ATMega128
  • Why
    • Past experience
    • Can talk directly to cell modem through UART
  • State machine style in our programming
    • will greatly help out in our debugging phase

SDMAY12-23

cell module
Cell Module
  • Pros:
    • Easy to use
    • Commands given through UART
  • Cons:
    • Poor signal strength
      • We will choose a testing location based off of this
    • Prepaid Billing
      • The more we test, the more we pay

SDMAY12-23

hardware
Hardware
  • Cell Module will “text” the ISU Canoe and Kayak Club with measurements
    • Measurements will occur once per day
  • Microcontroller will:
    • Take pressure sensor reading
    • Convert pressure reading into water depth
    • Send data to cell module for transmission through UART

SDMAY12-23

power circuit
Power Circuit
  • Determines the success of our project
    • Must be designed to keep system powered for an entire year
    • All components should contain as low leakage current as possible
  • Foreseen issues we are currently dealing with
    • Snow build up on solar cell
    • Battery failure due to cold weather
    • Strict power budget

SDMAY12-23

power circuit hardware
Power Circuit Hardware
  • Power Circuit will consist of
    • 5 Watt solar cell
    • 2 6V Lead Acid Batteries
      • Charging circuit
    • 3 Voltage regulators will be used to keep Microcontroller and Cell Module’s input voltage constant

SDMAY12-23

power budget
Power Budget

SDMAY12-23

past accomplishments
Past Accomplishments
  • Extensive research on:
    • Possible Environmental Conditions
    • Different options for measuring water height
    • Power Requirements
  • We have purchased the following:
    • Microcontroller
    • Pressure Sensor
    • Cell Module
    • Under-water tubing
    • AT&T SIM Card
    • Solar Cells and Battery

SDMAY12-23

current tasks
Current Tasks
  • Test individual components such as:
    • Cell Module
    • Microcontroller
      • Waiting for Evaluation board
    • Pressure Sensor
  • Designing power system
    • Choosing components based off of 5Watt power budget

SDMAY12-23

future tasks
Future Tasks
  • Test Power System Components
  • Construct Under Water Housing component
  • Program microcontroller and cell module
  • Put system together
  • Create working prototype by spring thaw
  • Upon Spring Thaw:
    • We will field test our prototype in a local stream

SDMAY12-23

testing requirements
Testing Requirements
  • Our team will test the following:
    • Accuracy of water height measurement
    • Air leakage in under water housing unit and tube
    • Power Management
      • Can solar cell keep system charged up for a year?
    • Wireless signals
    • Max and Min operating temperatures
    • Overall ruggedness of system
      • Will the system hold up to extreme weather conditions such as rain, snow, hail, wind?

SDMAY12-23

project status
Project Status
  • Microcontroller and Cell Module have arrived
  • Power Components have been ordered
  • Under water housing has been designed and will be built in the coming weeks
  • Software implementation has been researched and test code is currently under development

SDMAY12-23

main goal
Main Goal
  • The team is working hard to complete a working prototype by spring thaw
    • This goal has been set by our advisor who has stressed this goal since day one
    • Field testing our system is vital and will be used to point out any weaknesses our system might have that controlled testing could not.

SDMAY12-23

questions
Questions ?

Brief Summary

  • Stream depth gauge
  • Components
    • Pressure sensor
    • Microcontroller
    • Cell Module
    • Power Circuitry
  • Major Tasks
    • Implement code
    • Build prototype by spring thaw

?

?

?

?

?

?

SDMAY12-23

image sources
Image Sources
  • “High Winds” http://freeimagefinder.com/pic/scargill.html
  • “Rain" http://www.desicomments.com/desi/rain/
  • “Floods” http://www.securityworldnews.com/2011/09/28/dont-become-the-victim-of-a-flood/mailbox-in-flood-waters/
  • “Snow” http://wallpaper-s.org/42__Snow-Covered_Trees,_Varmland,_Sweden.htm
  • “Ice” http://www.danzfamily.com/archives/2007/12/tulsa_ice_storm_pictures_update.php
  • “Ice Formations”http://www.minnesotansforglobalwarming.com/m4gw/2009/03/ice-blasted-to-put-end-to-bismarck-flood.html
  • “Other Floating Debris” http://www.paddlinginstructor.com/blog/general-news.html?start=20
  • All other images were taken from Microsoft Office Clip Art

SDMAY12-23

ad