Wireless Sensing System for Intelligent Concrete Curing Design Team - - PowerPoint PPT Presentation

Wireless Sensing System for Intelligent Concrete Curing

Design Team Two – Spring 2012 Chai Yong Lim Kevin Gladstone Jonathan Sangregario Yanqing Li

Sponsor

Pete Semig

TI Analog Applications Engineer Facilitator

• Dr. Jian Ren

System Purpose

• Concrete curing involves

substantial guesswork

• Temperature and moisture

content are major factors in the curing process

• Providing this data would

allow users to know when concrete is cured, saving time and money

http://www.lib.berkeley.edu/NRLF/construction.html

System Proposal

Design Team Two has been tasked to provide a system which:

• Measures temperature and

moisture

• Can be submerged in concrete
• Transmits data wirelessly
• Displays data for interpretation

by users TI products to be utilized:

• Signal conditioning analog ICs
• MAVRK Prototyping Platform
• µMAVRK Wireless Modules

System Benefits

• Time- and money-saving for construction projects
• Prevent potential safety hazard of poorly cured

concrete

• Revenue generation through usage of TI products
• Existing products do not form a complete solution

Specifications

• Accurate measurement of

temperature and moisture

• Battery life of 3+ weeks
• Robust enclosure
• Wireless communication of

data between µMAVRK and MAVRK

• User-friendly GUI to display

data

• Tested in mixture which

simulates concrete

Temperature Sensor µMAVRK Daughterboard MAVRK Motherboard GUI Wireless Communication Moisture Sensor Signal Conditioning Signal Processing

System Design

Sensor Module

Temperature Sensor

Sensor Module Design

Sensor Module AAA Batteries

Wheatstone Bridge DC Voltage Regulator Gain Amplifier Moisture Sensor Gain Amplifier

µMAVRK Daughterboard

Analog/ Digital Converter Analog/ Digital Converter Wireless Transmitter

Temperature signal Power Moisture signal

MAVRK Motherboard

• Modular

development platform

• Receives RF

transmissions from µMAVRK

• Performs data

processing and transmission to GUI on PC

µMAVRK Daughterboard

• Low power, remote

monitoring system

• Communicates with

MAVRK through RF transmitter

Testing

• The test fixture for the system will be a container

filled with a material which simulates concrete

• Heat can be applied from a heat lamp,

measurement compared against thermometer

• Water added to material to test moisture sensor,

compared to ratio of water and material

Project Management

• Cannot perform test in actual concrete
• Cannot test for battery life
• Failure to implement software

Risk Analysis

Hardware

• Kevin
• Steve

Software

• Yong
• Jon

Budget

Component t Cost t Es Esti timate te MAVRK Platform Free TI Components Free Passive Circuit Components $10 PCB Fabrication (2 Revisions) $150 Vegetronix Moisture Sensor (x2) $80 Resistive Temperature Detector (x2) $5 Enclosure $20 Test Apparatus $20 TOTAL TOTAL $285

Thank You

Questions?