Energy harvesting in wireless applications Seite 1 RF Wireless Forum, Milan - EnOcean GmbH, Michael Gartz, February14 th, 2008
Michael Gartz, International Sales Manager Seite 2 RF Wireless Forum, Milan - EnOcean GmbH, Michael Gartz, February14 th, 2008
1. Energy Harvesting Electro dynamic Solar Thermo 2. Batteryless Radio 3. Future Prospects Seite 3 RF Wireless Forum, Milan - EnOcean GmbH, Michael Gartz, February14 th, 2008
Variations of Energy Converters Energy source Mechanical energy Thermal energy Light energy Electro-dynamic (linear motion) Thermocouples Miniature solar cell Conversion device Dimensions of energy converting element Production cost in, 10000 pcs. Energy input Electrodynamic converter (20x6x1) mm Thermocouples (5x5x2) mm < 2 < 3 < 1 e.g. Button push, 3 mm x 5N Temperature difference of 5 K Photovoltaic solar cell (10x20x2) mm Light, >50 lux Energy output 120 µws per operation 20 µw permanently 20 µw permanently Piezo converter (vibration) Seite 4 RF Wireless Forum, Milan - EnOcean GmbH, Michael Gartz, February14 th, 2008
Electro dynamic Harvester Push Button: Energy by fingertip Electro-dynamic Energy Generator User-independent energy conversion with button press Maintenance free 50.000 operations Allows small and flat rocker designs Seite 5 RF Wireless Forum, Milan - EnOcean GmbH, Michael Gartz, February14 th, 2008
Self-Powered Switch Technology Maintenance-free power supply via push-button Contact nipples for switch rocker identification Rotation axis for push buttons or switch rockers Power converter, Processor, HF radio and antenna Energy bow on both device sides Electrodynamic Energy Converter Seite 6 RF Wireless Forum, Milan - EnOcean GmbH, Michael Gartz, February14 th, 2008
Self-Powered Switch Technology Seite 7 RF Wireless Forum, Milan - EnOcean GmbH, Michael Gartz, February14 th, 2008
Solar Cell Solar: natural and indoor light Small solar cell 10x20mm with energy storage Energy harvesting with quick start and 24/7 operation Function follows design Seite 8 RF Wireless Forum, Milan - EnOcean GmbH, Michael Gartz, February14 th, 2008
Maintenance-free power supply via solar energy Indoor Solar Cell (1x3 cm, 2h @ 50lx ) Energy Store (for night operation) Ultra-low-power Wake-up Timer (some na only) HF radio. processor and antenna Sensor inputs (AD converter) Seite 9 RF Wireless Forum, Milan - EnOcean GmbH, Michael Gartz, February14 th, 2008
Solarbetriebener Funk- Raumtemperaturfühler Solarbetriebener Funk-Außentemperaturfühler Solarbetriebener Funk- Magnetkontakt Solarbetriebene Industrie- Funkschalter Seite 10 RF Wireless Forum, Milan - EnOcean GmbH, Michael Gartz, February14 th, 2008
Self-powered Motion Detector Seite 11 RF Wireless Forum, Milan - EnOcean GmbH, Michael Gartz, February14 th, 2008
Thermo-Electric Energy Harvester Thermo: 5k, size 5x5x2mm Standard peltier element Operation during energy provision Maintenance free, full integration possible Seite 12 RF Wireless Forum, Milan - EnOcean GmbH, Michael Gartz, February14 th, 2008
Thermo-Electric Energy Harvester Power of thermo-electric energy converter as function of size and temperature difference Seite 13 RF Wireless Forum, Milan - EnOcean GmbH, Michael Gartz, February14 th, 2008
Self-powered Valve Actuator (Prototype) Seite 14 RF Wireless Forum, Milan - EnOcean GmbH, Michael Gartz, February14 th, 2008
Batteryless radio technology unique energy harvesting Own transmission protocol which is orders of magnitude more efficient transmitter receiver Mains Sensor processor (signal preparation) RFreceiver energyconverter RFtransmitter processor (signal detection) status, value power app. Seite 15 RF Wireless Forum, Milan - EnOcean GmbH, Michael Gartz, February14 th, 2008
EnOcean Radio Standard High Reliability License free 868 MHz band with 1% duty cycle Radio design for immunity against interference Short telegrams generate low collision probability with high sensor density Full Coverage 10 mw and receiver sensitivity allow 10-30m in buildings (300m line of sight) Repeater available for simple coverage extension Prepared for wireless network structures Interoperability Core radio structure is well defined and embedded in modules or components Profiles for sensors published Co-existence with other radio systems No interference with DECT, WLAN, PMR systems etc. Proven in industrial environment Seite 16 RF Wireless Forum, Milan - EnOcean GmbH, Michael Gartz, February14 th, 2008
Comparison of radio systems EnOcean Common proprietary System ZigBee 802.15.4 Bluetooth 802.15.1 WLAN 802.11 Frequency (MHz) 868 868/433 868 2450 2450 Data rate (KB/s) 120 <10 20 720 11000...540 00 Coverage (m) 300 300 100 10 100 Energy consumption Operation w/o batteries? very low medium low high very high yes no no no no Collision risk very low high medium high very high Application Battery-less and maintenance free sensors and switches Battery powered sensors and switches Wireless communic. Infrastructure EDP networks: Printers PDAs Computers Web, E-Mail, Video Seite 17 RF Wireless Forum, Milan - EnOcean GmbH, Michael Gartz, February14 th, 2008
Miniaturization of Energy Converters: Cost, Size, Efficiency Bi-Te Peltier Elements Si-Thermocouples on Chip Rotational Generator Micro-Generator, 4 mm Vibration Converter Vibrational MEM s Energy Converter Seite 18 RF Wireless Forum, Milan - EnOcean GmbH, Michael Gartz, February14 th, 2008
New Materials: Design Flexibility, Efficiency, Robustness Magnetic liquids Flexible and organic solar cells Piezoelectric fibers Seite 19 RF Wireless Forum, Milan - EnOcean GmbH, Michael Gartz, February14 th, 2008
New Energy Sources: The Ocean of Energy is Everywhere Vibrations Rotation Daily temperature changes Air pressure changes Radio waves Skin or machine heat Muscle contraction Blood sugar fuel cells Organic material EcoBot II Energy source: organic material Seite 20 RF Wireless Forum, Milan - EnOcean GmbH, Michael Gartz, February14 th, 2008
Energy Harvester Library Product realization priorities are flexible for market opportunities! Lin. Motion ECO 100 Solar ECO 2x0 Rotation ECO 500 Vibration Thermo ECO 300 ECO 4x0 Others Pneumatic ECO 600 ECO xxx STM 1x0 Solar Sensor Module PTM 230 Universal switch module (PCB) STM 200 Universal ASIC Sensor Module With Energy Management today 2009 Seite 21 RF Wireless Forum, Milan - EnOcean GmbH, Michael Gartz, February14 th, 2008
Potential Market Segments Building installations flexibility @ better cost RF modules for light switches, window contacts, movement sensors, etc. Automotive safety & reliability RF modules for keyless entry, tire monitoring; early failure recognition of brakes, engine, gear box Manufacturing & Logistics process optimization RF modules for position, temperature, float mass, pressure and liquid level monitoring Medicine quality of life RF modules for detection of body functions (band aids, implants) Seite 22 RF Wireless Forum, Milan - EnOcean GmbH, Michael Gartz, February14 th, 2008
350+ different inter-operable products are available, from 60+ shipping manufacturers - some examples: Source: Peha Source: AdHoc Source: Aqualisa Source: Distech Source: Stuhl Source: Omnio Source: Bticino Source: Wieland Source: Hoppe Source: Flextron Source: MSR Source: Thermokon Seite 23 RF Wireless Forum, Milan - EnOcean GmbH, Michael Gartz, February14 th, 2008
Thank you for your attention! Abacus ECC SpA Mr. Fabio Norfo Via Volta 54 I-20090 Cusago www.eccabacus.it www.enocean.com info@enocean.com tel. +49 89 67 34 689-30 fax. +49 89 67 34 689-55 Seite 24 RF Wireless Forum, Milan - EnOcean GmbH, Michael Gartz, February14 th, 2008