S MART C IVIL I NFRASTRUCTURE M ONITORING Project Client/Facility Advisor: Randall Geiger Project Team: Team Leader: Xianbo Tao Website Leader: Kun Zhang Communicator: Guoyan Kai

P ROJECT P LAN Problem Statement Conceptual Sketch Functional Requirements Non-functional Requirements Technical Constraints Market survey Potential Risks Resource and Cost Estimate Project Milestones & Schedule

P ROBLEM S TATEMENT Long-term safety of the aging civil infrastructure  Bridge, Building, Public Transportation, and pubilc utility system. New concept: Soft capacitor Powering the monitoring system by using energy harvesting Wireless communication interface problem

P ROJECT G OAL Design circuit for small changes in capacitors Analyze system reliability Transfer the signal wirelessly Test the system stability to environment

C ONCEPTUAL S KETCH

F UNCTIONAL R EQUIREMENTS Circuit design requirement Low costs remand Environment Resistance

N ON - FUNCTIONAL R EQUIREMENTS Limited access to the web database The communication system free of interference

T ECHNICAL C ONSTRAIN Power consumption The output voltage limited to saturated voltage of op-amp Cost for the system communication

M ARKET S URVEY Differential capacitance measurement Market to research area and government

P OTENTIAL R ISKS Capacitance changes so small Soft-capacitor is unstable Stress is over the limitation Temperature Not completely hook up on structure

R ESOURCE AND C OST E STIMATE

P ROJECT S CHEDULE

S YSTEM D ESIGN Functional Decomposition Detailed Design HW/SW/Technology Platform used Test Plan Prototype Implementations or Basic building block implementations

F UNCTIONAL D ECOMPOSITION Overall Function A monitoring system to inspect potential problems of bridges. Sub-functions 1. Accurate Data Measurement 2. Reliable Network 3. WEB-accessible database

D ETAILED D ESIGN System Architecture The Design Circuit The Testing Results Transmit the data into signal Transmit the Signal into Micro-Controller Transmit the Signal to the Cellphone

S YSTEM A RCHITECTURE

T HE D ESIGN C IRCUIT

T HE T ESTING R ESULTS If there is no crack happen on the bridge

T HE T ESTING R ESULTS If the crack happens on the position of C1

T RANSMIT THE DATA INTO SIGNAL

T RANSMIT THE S IGNAL INTO M ICRO - C ONTROLLER

Communication System

T RANSMIT THE S IGNAL TO THE C ELLPHONE Transceiver to cellphone. Notice the repairing constructor

HW/SW/T ECHNOLOGY P LATFORM Hardware Microcontroller Soft capacitor Communication system Cellphone

HW/SW/T ECHNOLOGY P LATFORM Software Remote Desktop Connection C Language PSPICE

T EST P LAN Small capacitance change Output voltage based on the delta C Stability of changing small capacitance Certainty of ADC system Communication system Transceiver Receiver: cellphone

P ROTOTYPE I MPLEMENTATION

C ONCLUSION Current Project Status Task Contribution Plan for next Semester

C URRENT P ROJECT S TATUS Optimize the circuit of Stress Sensor Improvement of the circuit Start to modify the program of the microcontroller Plan to build up communication system

T ASK C ONTRIBUTION

P LAN FOR NEXT S EMESTER Hook up the real circuit Make the circuit applicable on the bridge Finish the program of microcontroller Build up the web database

Q UESTION ?