Gerhard Wilsnach General Manager: Innovation & Development Powertech Systems Integrators South Africa

Transcription

1 Gerhard Wilsnach General Manager: Innovation & Development Powertech ystems Integrators outh Africa

2 Overview Intro to Zigbee Elements of a mart Metering ystem Planning/Installing Practical hallenges in the field Back-office support General Zigbee issues/comments Questions

3 Intro to Zigbee What is a Wireless Mesh Network? What is the ZigBee Alliance? What does a ZigBee network consist of? What makes a ZigBee network special? Where are ZigBee networks being used? hort Intro to Zigbee

4 What is a Wireless Mesh Network? Data Internet connection GM (cellular) network WiFi link Ethernet cable Any / all of the above ommands ensors Temperature Humidity Location Volts & Amps ecurity Etc. Wireless Zigbee cloud ontrollers Fans Pumps Valves ompressors onveyor belts Etc. hort Intro to Zigbee

5 What is the ZigBee Alliance? Wrote a specification for a Wireless Mesh Network that meets the IEEE standard Revise the ZigBee specification Association of 340 companies Bring vendors (chip and module level) on board Ember Microchip TMicroelectronics Telegesis Texas Instrument and many more ertify ZigBee products Develop Public Application Profiles ZigBee mart Energy ZigBee Home Automation ZigBee Remote ontrol ZigBee Health are ZigBee Telecom ervices ZigBee Building Automation (V0) ZigBee Retail ervices (V0) hort Intro to Zigbee

6 What does a ZigBee network consist of? OO ROU EXT oordinator reates and maintains the network ommunicates with the computer One per site Mains powered (battery backup) Router Extends the network s reach Retrieves data from sensors Passes commands to the controller Unlimited number per site Mains powered (battery backup) Extender Extends the network s reach Unlimited number per site Mains powered (battery backup) End Device Retrieves data from sensors Passes commands to the controller Unlimited number per site Battery powered ensors ontrollers ensors ontrollers ensors ontrollers ensors ontrollers ROU ensors ontrollers EXT ensors ontrollers ROU ROU EXT EXT ensors ontrollers OO EXT Bi-directional wireless links EXT ensors ontrollers ROU EXT ensors ontrollers ROU EXT ensors ontrollers ensors ontrollers ensors ontrollers ensors ontrollers hort Intro to Zigbee

7 What makes a ZigBee network special? Meets the IEEE standard for wireless mesh networks IEEE is the Institute of Electrical and Electronics Engineers (395,000 members in 160 countries) IEEE standards (such as ) are well thought through Uses the 2.4 GHz band No licence required, free Devices are IAA (Independent ommunications Authority of A) approved an legally be used in A Open standard Public Application Profiles end users not locked into one supplier hips and modules from many vendors drives costs down Low power End Device can run for 1 year from a penlight battery Other devices - small power supplies / battery backup ecure communications 128-bit encryption elf-organizing Devices can be added / removed rapidly elf-healing Multiple wireless links Robust communications Incorporates fully hand-shaked protocols with retries, channel agility, collision avoidance, etc. Ensures that data and commands will reach their destinations ommunication distances 24 m 3 km (plus) depending on module / antenna / environment hort Intro to Zigbee

8 Where are ZigBee networks being used? Residential electricity metering and control Residential water metering and control Home automation Building automation Industrial monitoring and control ommercial vehicle data logging Health monitoring hort Intro to Zigbee

9 Frequency pectrum of the 2.4GHz Band ZigBee ( ), Wi-Fi (802.11b/g) and Bluetooth ZigBee has the ability to be agile across 16 channels on this licence-free band ZigBee ( ) MA-A hannel entre Frequency (MHz) Wi-Fi (802.11b/g) D b/g hannel entre Frequency (MHz) Bluetooth ( ) FH Frequency Range (MHz) hort Intro to Zigbee

10 Elements of a mart Metering ystem

11 Elements of a mart Metering ystem UTILITY BILLING ERVER (MATER TATION) AMI = Total AMI platform cost M TA = Hardware cost of the AMI ready meter M = Hardware cost of the GM/GPR ready data concentrator p = Project period (months) GM = ost per meter or connection per month for GM network traffic (including IM card) R = oncentration ratio of meters per data concentrator n = Number of metering points or end-users APN = Initial setup costs for an APN system APN = Fixed cost per month for an APN (irrespective of usage) GPR ONENTRATOR ZIGBEE RF OR PL APN METER

12 Planning Geographical layout / GI systems High density/low density/ecurity complexes Zigbee limited to 16 hops New Urban areas Rollout Metering Kiosks Ferrous/Non ferrous

13 Installation ommissioning Tools et EPAN and PAN ID s NetworkTool Inject commands into network Ne extractor / Gateway Evaluate network etting of Zigbee network parameters-easy Linking of IU and ADs to martmeter

14 Practical hallenges in the field Large networks Routing and Messages Theoretical limits realistic 1000 devices Bulk of traffic Between oordinator-ad & martmeter (AD measure load parameters) Zigbee 2.4G co-exists with WiFi and Bluetooth

15 Back-office support Asset and Revenue protection

16 General Zigbee issues/comments Interoperability ZigBee ompliant Platform ZigBee ertified Product Tested for oexistence Tested for Interoperability Manufacturer pecific Application Profile Public Application Profile Interoperability ZigBee Application ZigBee Application ZigBee Application oexistence ZigBee Network ZigBee Network ZigBee Network ompliant MA and Physical ompliant MA and Physical ompliant MA and Physical

17 Questions?