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

Wireless Sensing System for Intelligent Concrete Curing Design Team Two – Spring 2012 Sponsor Chai Yong Lim Pete Semig TI Analog Applications Engineer Kevin Gladstone Jonathan Sangregario Facilitator Yanqing Li 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 TI products to be utilized: to provide a system which: • Signal conditioning analog ICs • Measures temperature and moisture • MAVRK Prototyping Platform • Can be submerged in concrete • µ MAVRK Wireless Modules • Transmits data wirelessly • Displays data for interpretation by users

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 µ MAVRK and MAVRK • User-friendly GUI to display data • Tested in mixture which simulates concrete

System Design Sensor Module GUI Temperature Moisture Sensor Sensor Signal Signal Processing Conditioning MAVRK µ MAVRK Motherboard Daughterboard Wireless Communication

Sensor Module Design Temperature signal Moisture signal Power Sensor Module µ MAVRK Daughterboard Temperature Wheatstone Gain Sensor Bridge Amplifier Wireless Transmitter Moisture Gain Sensor Amplifier Analog/ Digital Converter DC Voltage Analog/ Digital Regulator Converter AAA Batteries

MAVRK Motherboard • Modular development platform • Receives RF transmissions from µ MAVRK • Performs data processing and transmission to GUI on PC

µ MAVRK 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 Hardware Software • Kevin • Yong • Steve • Jon Risk Analysis • Cannot perform test in actual concrete • Cannot test for battery life • Failure to implement software

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?