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(1)

Energy harvesting

in

(2)

Michael Gartz,

(3)

1. Energy Harvesting

Electro dynamic

Solar

Thermo

(4)

Energy source

Mechanical

energy

Thermal

energy

Light

energy

Conversion

device

Electro-

dynamic

converter

Thermo-couples

Photovoltaic

solar cell

Dimensions of

energy

converting

element

(20x6x1)

mm

(5x5x2)

mm

(10x20x2)

mm

Production cost

in €,

10000 pcs.

< 2

< 3

< 1

Energy

input

e.g. Button

push,

3 mm x 5N

Temperature

difference of

5 K

Light,

>50 lux

Energy

output

120 µWs

per operation

20 µW

permanently

20 µW

permanently

Variations of Energy Converters

Thermocouples

Miniature solar cell

Electro-dynamic

(linear motion)

Piezo converter

(vibration)

(5)

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

(6)

Power converter,

Processor, HF radio

and antenna

Energy bow on

both device sides

Electrodynamic

Energy Converter

Contact nipples

for switch rocker

identification

Rotation axis for

push buttons or

switch rockers

Maintenance-free power supply via push-button

(7)
(8)

Solar Cell

•Solar: natural and indoor light

•Small solar cell 10x20mm with

energy storage

•Energy harvesting with „quick

start“ and 24/7 operation

(9)

Energy Store

(for night

operation)

Ultra-low-power

Wake-up Timer

(some nA only)

Indoor Solar Cell

(1x3 cm,

2h @ 50lx )

HF radio.

processor

and antenna

Sensor inputs

(AD converter)

(10)

Solarbetriebener

Funk-Raumtemperaturfühler

Solarbetriebener

Funk-Außen-temperaturfühler

Solarbetriebener

(11)
(12)

Thermo-Electric Energy Harvester

•Thermo: 5k, size 5x5x2mm

•Standard peltier element

•Operation during energy provision

•Maintenance free, full integration

possible

(13)

Power of thermo-electric energy converter as

(14)
(15)

Batteryless radio technology

unique energy harvesting

Own transmission protocol

which is orders of magnitude

more efficient

RF-Mains

processor

transmitter

Sensor

power

status,

RF-

processor

receiver

(16)

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.

(17)

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

very low

medium

low

high

very high

Operation w/o

batteries?

yes

no

no

no

no

Collision risk

very low

high

medium

high

very high

(18)

Miniaturization of Energy Converters:

Cost, Size, Efficiency

Si-Thermocouples

on Chip

Micro-Generator, 4 mm

Vibrational MEM´s

Energy Converter

Bi-Te Peltier

Elements

Rotational

Generator

Vibration

Converter

(19)

New Materials:

Design Flexibility, Efficiency, Robustness

Magnetic liquids

(20)

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

(21)

Energy Harvester Library

Solar

STM 1x0

Solar

Sensor Module

STM 200

Universal

Sensor Module

ASIC

With Energy

Management

2009

Rotation

ECO 500

Thermo

ECO 300

Vibration

ECO 4x0

Pneumatic

ECO 600

Others

ECO xxx

Product

realization

priorities are

flexible for market

(22)

•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)

(23)

Source: Peha

Source: Distech

Source: Omnio

Source: Wieland

Source: AdHoc

Source: Stuhl

Source: Aqualisa

• 350+ different inter-operable products are

available,

• from 60+ shipping manufacturers - some

(24)

Thank you for your attention!

www.enocean.com

info@enocean.com

tel. +49 89 67 34 689 - 30

fax. +49 89 67 34 689 - 55

Abacus ECC SpA

Mr. Fabio Norfo

Via Volta 54

I-20090 Cusago

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