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 Precision Analog Kevin Gladstone Jonathan Sangregario Facilitator Yanqing Li Dr. Jian Ren

Agenda • Project Purpose • Design Specifications • Final Design • Prototype Demonstration • Results and Future Work

Why Sense Concrete Curing? • Eliminate the need to estimate the status of curing concrete • Improve the properties of cured concrete • Prevent safety hazards • Save time and money Purpose Specifications Final Design Demonstration Future Work

TI’s MAVRK • Modular and Versatile Reference Kit (MAVRK) • Modular hardware prototyping platform • The design features the µMAVRK RF transceiver module • Sensor system provides a demonstration of µMAVRK capabilities and usage Purpose Specifications Final Design Demonstration Future Work

Design Specifications • Track moisture and temperature data over time • Provide accurate data readings • Low power consumption • Robust enclosure • Small size • Data displayed by easy-to-use GUI • Functional demonstration prototype Purpose Specifications Final Design Demonstration Future Work

System Design Overview Purpose Specifications Final Design Demonstration Future Work

Sensor Selection Temperature Sensor Moisture Sensor • Resistive temperature • Vegetronix VH400 soil detector moisture sensor • Small size • Reports volumetric water • Accurate content • Linear • Replaced VG400 • Implemented in • Drawbacks Wheatstone bridge • Large size • High power consumption Purpose Specifications Final Design Demonstration Future Work

Analog Sensor Module • Receives sensor input • Signal conditioning • Output to µMAVRK Purpose Specifications Final Design Demonstration Future Work

µ MAVRK RF Transceiver Receiver ¡State ¡ S2 ¡ Machine Transmi(er ¡State ¡ Reformat ¡the ¡ Machine Packet ¡ S0 ¡ Ini%aliza%on Forward ¡the ¡ S0 ¡ packet ¡to ¡UART ¡ Ini%aliza%on byte ¡by ¡byte S1 ¡ Sleep ¡& ¡ RF ¡Received ¡ Wait ¡for ¡ Interrupt S1 ¡ Event & ¡CRC ¡Check ¡OK Conversion ¡Complete ¡ Sleep ¡& ¡ Interrupt WDT ¡ Wait ¡for ¡ Interrupt Event ¡ S2 ¡ S3 ¡ Enable ¡sensor ¡ Disable ¡sensor ¡ board ¡chips ¡& ¡ board ¡chips ¡& ¡ Start ¡Analog-­‑ Transmit ¡ADC ¡ Digital ¡ Conversion values ¡ Purpose Specifications Final Design Demonstration Future Work

GUI Design Purpose Specifications Final Design Demonstration Future Work

Enclosure • Robust and reusable • Modified Witz sport case • Sensors exposed to environment Purpose Specifications Final Design Demonstration Future Work

Demonstration • Verification of prototype functionality http://www.egr.msu.edu/classes/ece480/capstone/spring12/group02/Site/Media.html Purpose Specifications Final Design Demonstration Future Work

Results Successfully Met Specifications Partially Met or Unmet Specifications • Some system and sensor- • Data trends tracked over time based accuracy errors • Robust enclosure • Large power consumption • Successful software implementation including simple GUI • µMAVRK creatively implemented for wireless communication Purpose Specifications Final Design Demonstration Future Work

Future Improvements • New moisture sensor • Size reduction • Power consumption reduction • Combine receiver and GUI software into a USB plug-and-play device • Develop curing algorithms Purpose Specifications Final Design Demonstration Future Work

Thank You Questions?