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Radiocrafts
Embedded Wireless Solutions
Open wireless standards
Wireless M-Bus, KNX RF, ZigBee,
6LoWPAN
Hallvard Moholdt, Technical Solutions Manager
Ørjan Nottveit, Product Line Manager
www.radiocrafts.com
Agenda
AMI overview
Wireless M-Bus
NTA8130
OMS
KNX RF
ZigBee
Total cost of ownership (TCO)
Q&A
AMI
WAN
NAN
HAN/LAN
HAN/LAN
Gateway
Why open standards
Open standards enable interoperability
Open standards give multi-vendor ecosystem
and hence lower cost
What are open standards
EN/IEC/ISO
IETF
Industry standard
Wireless M-Bus
figawa,
© Radiocrafts AS
Wireless M-Bus 3 Key points
Only European Norm for wireless metering
Field proven in millions of meters
Supported by all major metering companies
in Europe
© Radiocrafts AS
Wireless M-Bus Basics
 Slaves reporting to Master (concentrator)
 Slave receives acknowledge with minimum time response
Message decryption
and acknowledge within
2-3 ms
Meter wakes up and
transmits reading
(gas: each 30 min)
Ack can contain ’shut
valve’ command
Water: TX each 4
hours (with random
time-spread)
Background
 Standardization work -> Cenelec, TC 294
 EN 13757 standard
“Comm. Syst. for remote reading of meters”
 EN13757-4:2005: Wireless Meter Readout
 -3 M-Bus application layer
 -1 DLMS application layer
 The Netherlands: NTA8130 as of Feb 2006
(last revision of Jan 2009)
 Germany: OMS specification released September
2009
 TC 294 again active (re-launched July 2009)
EN13757-4:2005
 “Stationary Mode” S
 Unidirectional, S1, or bi-directional, S2
 32.768 kb/s, 868.3 MHz
 “Frequent transmit mode” T
 Unidirectional, T1, or bi-directional, T2
 100kb/s, 868.95 MHz
 “Frequent receive mode” R
 10 channels, 4.8 kb/s
NTA 8130 (DSMR)
 Netherlands Technical Agreement 8130
 Dutch Smart Meter Requirements
 P2 interface
 Max 4 metering instruments and/or grid company
equipments in each metering system
 Defines T1 / T2 and AES128
OMS
 Open Metering System specification
 Assured co-existence with NTA 8130 / DSMR
 Unified approach for the different media
(electricity, gas, heat and water) as well as
actuators and displays
 Interoperation
 Optimized for battery lifetime of > 14 years
 Installation supported
OMS cont.
 MUC (Multi Utility Controller): Intelligent concentrator
between AMM and the devices
 Either S or T mode and AES 128 encryption
MUC <-> meters
 OMS is being reviewed by CEN as European new
work item proposal TC294
System topology
RC1180-MBUS module
 Embedded protocol
 supporting EN 13757-4:2005 mode S, T and R2
 AES 128 HW co-prosessor
 12.7 x 25.4 x 3.3 mm
 compact module for SMD mounting
 No configuration required
 4 pins + gnd connection
 2.0 – 3.6 V supply voltage
 ultra low power modes
RC1180-MBUS module
 2 channels in mode S and T
 868.3 and 868.95 MHz
 10 channels in mode R2
 868.03 + n x 0.06 MHz
 CE marked
 Conforms with EU R&TTE directive
 EN 300 220, EN 301 489, EN 60950
 Designed for EX compliance
 High temperatures
Feature sets standard
Feature
List
Feature set
RC1180-MBUS1
RC1180-MBUS2
RC1180-MBUS3
General
Basic wireless M-bus
functions, flexibility.
Added features for
NTA8130/DSMR compliance
(the Netherlands)
Added features for Open
Metering System compliance
(Germany)
Network role
Master or Slave
Master or Slave
Master, Slave or Repeater
Modes
S1, S2, T1, T2, R2
T1, T2
S1, S2, T1, T2
Encryption
No, must be handled
externally
Yes, AES128 according
to NTA8130/DSMR
(mode 4 and 5)
Yes, AES128 according
to Open Metering System
specification (mode 5)
Installation
mode
No, Must be handled
externally
Yes, according to
NTA8130/DSMR.
Up to 8 slaves.
Yes, according to Open
Metering System specification.
Up to 64 slaves.
Features
Receives any
MBUS packet.
Message filtering must be
handled externally
Filter function: Master
only receives messages
from installed/registered
meters
Filter function at master.
Automatic access number
handling and accessibility
check. Autonomous Repeater.
Automatic
acknowledge Message
mailbox
No, must be handled
externally
Yes, automatic acknowledge
by Master in T2 mode
Yes, automatic message
generation and message
mailbox in Master for T2/S2.
High-end performance
 Output power typical 10 dBm
 Excellent receiver sensitivity
 Typical -102 dBm at 32.768 kbps
 Excellent blocking
 >-45 dBm at 2 MHz offset
 Two way communication simplifies installation
compared to only one-way
 8-900m range / quarterwave antenna
20
UART : Data in – RF out
Wireless M-Bus communication
modem
EN 13757-3
EN 13757-4
Customer
Application
Microcontroller
UART
GPRS modem
UART
Ethernet
gateway
UART
22
M-Bus application module
Pulse input
Innstallation button input
Status LED output
UART for reading
meter info
 Tailoring to different end users requirements
23
MUC platforms: RC1180-MBUS+
GPRS/GSM / Ethernet
RC1180-MBUS
PC Suite w/Packet sniffer
Man. ID
KNX is a registered Trademark of the KNX Association cvba, used with kind permission
© Radiocrafts AS
KNX RF + wireless M-Bus
= a complete solution for
building automation
and load management
&
home area metering
KNX is a registered Trademark of the KNX Association cvba, used with kind permission
 KNX is the worldwide standard for home and building
control (~7000 certified products)
 IEC/ISO and EN standard
 Supporting media (RF, PL, TP, IP)
KNX is a registered Trademark of the KNX Association cvba, used with kind permission
RF
KNX-RF has the same lower layers as
wireless M-Bus
KNX RF
868 MHz, multiple channels
New version of standard just released
Improvement in battery lifetime and performance
improvement in noisy environment
ZigBee is a registered Trademark of the ZigBee Alliance
© Radiocrafts AS
ZigBee basics
Short range radio based on IEEE 802.15.4
2.4 GHz Mesh radio
Limited to 10 mW/MHz in Europe by EN 300
328
ZigBee Smart Energy
Public Application profile for support of
Meters
Display
Repeater
Load Control Devices
Demand response support
Security to allow consumer only, utility only, or
shared networks
ZigBee Smart Energy : Preferred solution in
US. for Smart Energy HAN
Smart Energy Security
 Security is critical requirement
 AES128 bit network key and link keys
 Preconfigured link key
 Used to receive network key
 Certificate based public key exchange to achieve final
link key
 Utilizes a Certificate Authority for the device keys
 Process has been independently audited and approved
by Carnegie-Mellon
The way forward: ZigBee IP
stack
New ZigBee stack option in development
Based on end to end IP for smart metering
MAC – 15.4 2006 with MAC security
6LoWPAN
6LoWPAN
Standardized through IETF
IPv6 packets over Low power Wireless
Personal Area Network
Compression, fragmentation++
ROLL (Routing Over Low power and Lossy
networks )
Radiocrafts is working with 6LoWPAN leader
Sensinode
RC2400/RC2400HP
Support ZigBee Smart Energy and ZigBee
PRO
256 kB Flash
Excellent range
102 dB system gain – RC2400
110 dB system gain – RC2400HP(European
setup)
Excellent battery lifetime
RC2400 and RC2400HP pin compatible
FW options
ZigBee Network Module
Include precompiled ZigBee PRO stack
UART/SPI to external processor
ZigBee 2007/PRO compliant stack available
for download free of charge
Easy-to-use development environment for
customers to develop their own solution
Customer tailored solution
RC2400-ZNM
MCU
 Application
 Security library
 ZigBee PRO stack
 Easy to use API
interface via UART/SPI
Total cost of ownership of
wireless solutions
Finance and logistics
 Supply Chain Management
 Interest rate/ROI
 Risk/Time to market
Solution maintenance
 Evolution of standards
 New and better IC’s
 Adding functionality
Manufacturing
Design
Bill of material
 Assembly
 Manufacturing test
 Yield loss
 HW
 FW
 Characterization
Lowest TCO
=
One design – Multiple
solutions
868MHz High Power
Wireless M-Bus
½ Watt
New!
Wireless M-Bus
@ 433MHz
KNX-RF
New!
ZigBee
Customer specific
ZigBee High Power
Questions?
Thank you for your attention
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