【精选文档】南科大学术会议PPT模板

the placement quality index
FM
=
I MRE I MCI
Minimizing FM yields the best combination of both measurement types.
Energy Consumption Study
Network Model
energy
Background
• Heterogeneous wireless sensor networks (HWSNs) are widely adopted in structural health monitoring systems due to their potential for performing more complex operations by integrating a diverse set of devices.
HWSNs Energy
Particle Swarm Optimization
Algorithm (PSO)
Multi-objective Optimization
Function
Optimal Numbers and Locations of Sensor Nodes
Simulation Study – A four-span continuous reinforced concrete box-girder bridge
HWSNs comes with power and bandwidth constraints
In this study, an optimal Heterogeneous wireless sensor deployment (OWSD) method is proposed in terms of
Cta = (g a +d adam )K
communication
data receivingCra = e a K
数据采集
数据处理
数据传输
数据接收
空闲
休眠
Cts = (g s +d sdsm )K Crs = e s K
Par ameter αa βa γa δa εa da αs βs γs δs εs ds K
Definition energy consumption related to data collecting about accelerometer energy consumption related to data processing about accelerometer energy consumption related to the transmission distance about accelerometer energy consumption related to the transmission distance about accelerometer energy consumption related to data receiving about accelerometer average distance between all nodes in a network layer to the base station energy consumption related to data collecting about strain sensor energy consumption related to data processing about strain sensor energy consumption related to data transmitting about strain sensor energy consumption related to the transmission distance about strain sensor energy consumption related to data receiving about strain sensor average distance between all nodes in a network layer to the base station amount of data per second transmitting
Heterogeneous Wireless Sensor Networks Energy Consumption (EC)
Structural Health Monitoring Modal Identification Accuracy (MIA)
Algorithm Flowchart
Modal Identification Accuracy
wireless accelerometer
consumption
node
data acquisition
Cca = aa K
wireless strain gauge node
Ccs = as K
能耗（J/bit）
data processing
Cpa = badamK
Cps = bsdsmK
data
南方科技大学
South University of Science and Technology
Heterogeneous Wireless Sensor Deployment with Multi-Objective Optimization for Structural Health Monitoring
MRE = ya - yb yb
n1: the number of acceleration nodes
n2: the number of strain nodes
m: the number of
model shapes ya: estimated structural response yβ: measured structural response
Optimization Problem Formulation in HWSNs
Modal Identification Accuracy Study
Modal Clarity Index (MCI)
邋 1 m m
MCI (n1, n2 ) =
m2
MCI p,q
p=1 q=1
Modal Relative Error (MRE)