Strengths and weakness for industrial applications

Zigbee and Bluetooth :

Contents

Term project overview

Zigbee summary Bluetooth summary Desirable characteristics Properties comparison Applications

Project Overview

Zigbee

Low power mesh networking IEEE 802.15.4 Standard, based on

Motorola’s proposal “Low power”, “Networked”, “Open

standard” Personal Operating Space (POS) of

10m radius, or greater range Mesh self-healing network

Bluetooth

Alternatives to cables IEEE 802.15.1 standard (2002) “Short range” and “Mobile products” POS of 10m radius, with mobility Ad-hoc connections between devices

Desirable Characteristics

Range Data rate Network latency Power profile Security Operating frequency Engineering & design complexity

Desirable Characteristics (Cont’d)

Network topology # of devices Scalability / Extendibility Flexibility Resilience / Reliability

Comparison (Zigbee vs. Bluetooth)

Range 10-100m vs. 10m

Data rate 20-250Kbps vs. 1Mbps

Network latency Relatively, Slow vs. Fast

Power profile Years vs. Days

Comparison (Cont’d)

Security Operating frequency

Using same 2.5Ghz ISM Band Complexity

Relatively, Simple vs. Complex Network topology, # of devices

Up to 7 slaves vs. 65000 network nodes

Comparison (Cont’d)

Applications

Zigbee Remote sensing & control

Bluetooth Machine to machine

More …

Network structure Exhibition positioning Spectator/Audience movement