WP 3.2. Commercial Mote Hardware Trade-off

WP 3.2.Commercial Mote Hardware Trade-off

Surrey Space Centre, University of Surrey, UK

Christopher P. Bridges

Friday, 24th November 2006

WP3.2 - COTS Motes SSC Internal Meeting2 / 8

Agenda

Requirements Intrasatellite and Intersatellite

Comparison Hardware Communications Software/ Cost

Analysis Snapshot

Recommendations


Requirements

Category Intrasatellite Intersatellite

Microcontroller Low power, low speed Low power, high speed

Memory Buffering/ storage while communications system is in use.

Temperature Inside spacecraft On the outside of the spacecraft

Carrier FrequencyNon interference with spacecraft

avionicsFlexibility for differing data rates

as lower data rates can go further

Communications Power Consumption

Low as possible

Data Rates Highest at possible

Range Less than 10m Over 1km

StandardsMesh, ad-hoc and multi-hop to for

cavity issuesMesh, ad-hoc and multi-hop in

between satellites

Software Supplied Performance, ease-of-use, reconfigurability

Cost Low as possible


Comparison - Hardware

Company MicrocontrollerMemory(ROM/ RAM)

Temp

Millennial 2 x HCS08 (2.1V/40MHz) ? Industrial

Jennic JN5121 (2.2V/16MHz) 64k / 96k -40 to 85

DUST Networks M2030 (3V) ? -40 to 85

MicroDAQ ? (3V) 32k / 64k 0 to 50

Ember EM260 (3.3V/24MHz) ? -40 to 85

Zensys ZW0201 SoC (3.3V/16MHz) 2k/ 32k -30 to 85

Crossbow (Telos) MSP430 (3.3V/8MHz) 48k/ 1M -40 to 123.8

TinyNode MSP430 (3.3V/8MHz) 48k/ 1M -40 to 85

Sensinode MSP430 (3.3V/8MHz) 10k/ 4M ?

Microcontroller – Want the lowest power requirement.

Memory – Important for buffering/ storage whilst communications is in use.

Temp – Biggest band as possible.


Comparison - Communications

Company FrequencyPower Consumption(Trans/ Rec/ Sleep)

Data Rates Range

Millennial 916M / 2.4G 35m/ 42m/ 6u 115 kbps 30m

Jennic 2.4G 45m/ 50m/ 14u ? 400m (>4km)

DUST Networks 900M/ 2.4G 20m/ 22m/ 10u 250 kbps 200m (>400m)

MicroDAQ 900M/ 2.4G ? ? 75m (>750m)

Ember 2.4G 20.7m/ 19.7m/ 0.5u 250 kbps 75m

Zensys 908M 23m/ 21m/ 2.5u ? 60m

Crossbow (Telos) 916M/ 2.4G 23m/ 21u/ >1u 250 kbps 100m

TinyNode 870M 33m/ 14m/ 1u 250 kbps 200m (>2km)

Sensinode 2.4G ? 250 kbps 100m

Frequency – Dependant on application. Lower frequencies travel further than the higher.

Power Consumption – Lowest as possible (dependant on hardware used).

Data Rates – Highest as possible.

Range – Dependant on application.


Comparison – Software/ Cost

Company Standards SuppliedCostCost, no. of pieces, distrib

Millennial 802.15.4 MeshScape, API Lib $4500 for 9P (EU)

Jennic 802.15.4, ZigBee GNU Toolchain, MCU Lib $999 - 1299 for 5P (£305 UK)

DUST Networks 802.15.4 Network GUI, API Lib ? For 13P

MicroDAQ 802.15.4, ZigBee Network GUI for Control $2999 for 9P (US)

Ember 802.15.4 InSight GUI $2500 for 10P (UK)

Zensys None ZWave Protocol, API Lib ? (Asia)

Crossbow (Telos) 802.15.4 TinyOS + Assoc Progs £87 each / $780 for 10P (US)

TinyNode None TinyOS + Assoc Progs €609 for 5P (EU)

Sensinode 802.15.4, ZigBee Nanostack Protocol + API €2895 for 17P (EU)

Standards – Enabling different network topology options (e.g. multi-hop)

Supplied Software – What comes with the package?

Cost – Where can we buy from? Price per unit?


Analysis Snapshot


Recommendations

Intrasatellite Communications

Crossbow’s Telos Mote (1st/9) Low power, cheapest, 2.4GHz, large mem, best temp,

802.15.4/Zigbee

Intersatellite Communications

TinyNode (2nd/9) Large mem, ind temp, 870MHz, TinyOS, EU supplier

(€609) Jennic (4th/9)

4km range, small mem, ind temp, 2.4GHz, own software, UK supplier (£305)


Millenial

Notes: Ready Made

MeshScape is a complete wireless sensor networking system that delivers OEMs and system integrators all of the software, hardware, and tools to quickly and cost-effectively develop and deploy embedded wireless sensor networking applications.

Applications: Ready made WSN solutions


Jennic

Notes: Development

Telemetry and utilities(e.g. AMR)

Low cost evaluation platform for wireless sensor networks

Complete SDK and network stack

Unrestricted development environment

Ideal for application development and demonstration

Daintree Networks sensor network analyser package

IEEE802.15.4 packet sniffer and network test application


DUST Networks

Notes: Industry

In the industrial automation, building automation, and defense markets

They are tailored for use in battery- and line-powered wireless devices for applications that demand proven performance, scalability, and reliability.


MultiDAQ


Ember

Notes: Topologies

Ember’s communications API facilitates the development of self-organizing, self-healing, peer-to-peer networks targeted to specific customer requirements. It contains libraries for EmberZNet’s mesh-, star-, and hybrid-networks. To achieve efficient messaging in complex networks, the communications API allows developers to build the most effective network for the application


Zensys

Notes: Sensing

The ZW0201 is a complete System on Chip (SoC) and consists of an integrated RF transceiver, an 8051 microcontroller, flash and SRAM memory storage and a range of peripherals.

For battery-operated devices we are extremely pleased to inform you that ZW0201 has dramatically reduced its power consumption. It is now possible to create Z-Wave products such as sensors, remotes, door locks, etc. that can run for up to 10 years with 2 AAA batteries.


Crossbow - Telos

Notes: Development

The TelosB Mote is an open-source platform designed to enable cutting-edge experimentation for the research community. This platform bundles all the essentials for lab studies: USB programming capability, IEEE 802.15.4 radio with integrated antenna, low power MCU with extended memory and an optional sensor suite. This platform is used primarily for low-power research development and wireless sensor network experimentation.


TinyNode

Notes: Development

The TinyNode 584 is an ultra-low power OEM module that provides a simple and reliable way to add wireless communication to sensors, actuators and controllers.

TinyNode 584 is optimized to run TinyOS and packaged as a complete wireless subsystem with 19 configurable I/O pins offering up to 6 analog inputs, up to 2 analog outputs as well as serial interface.


Sensinode

Notes: Development

Sensinode provides flexible wireless sensing prototype platforms and products based on the latest low-power wireless technologies.

ZigBee™-ready IEEE 802.15.4 communications using advanced Chipcon radios

Support for open-source solutions such as FreeRTOS, nanoIP, TinyOS and Linux

The Sensinode NanoStack™ provides a flexible open-source communication stack for Sensinodes along with monitoring and access tools for Windows and Linux PC's

WP 3.2. Commercial Mote Hardware Trade-off

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