Sollar poSollar powwered ered BlueTooth BlueTooth mimiccrorophphononee

Autor: Libor Hrbek

Director: Ing. Miroslav Skrbek Ph.D.

2/10

Specification of projectSpecification of project

Make microphone which comunicates trought wireless BlueTooth device

Sollar powered, continuous running Meaning of device:

– Noise scanning in the intelligent room without wire usage

– Use ecological energy without battery changing Meaning of project:

– Attest ability of BT audio channel to transfer audio in required data and bitrate

– Attest Sollar power supply

3/10

BloBlockck diagramdiagram

Solar cell 8V 180mA

Accumulator 6V 3,4Ah

Voltage changer5,5-11,5V /3V

BT + microproc. MicrophonePC - Master

4/10

Basic parameters of choiceBasic parameters of choice For BT module

– High data transfer– Low consumption– availability

For charge– Dimensions– Wattage

For Batterry– Dimensions– Weight– Capacity– Easy charging

5/10

Explored Explored BT modulBT modulesesConnectBlue 33i, ToothPICConnectBlue 33i, ToothPIC

Disatvantages 33i– Not available– Range 100m (security)– Need power control – Need control

microprocessor Disatvantage ToolPIC

– High power consumption more then 1W

– Small data flow 50kBauds– Not available audio

interface

6/10

ExpleredExplered BT modul BT modulesesfree2move – Class 2 Modulefree2move – Class 2 Module

Parameters– Very low consumption

250mW– Highest date transmition

235kb/s– Power supply 3V

available battery feeding– Integrated 15 bit audio

codec– Range 20m– Small dimensions– Sample rate 8 kHz

7/10

AccumulatorAccumulator

We choose gel accumulator 6V/3,4Ah

Advantages – simple battery charging

Continual battery charging

Estimated consumaption max. 0,5W Power charge need back up fof 4 days, when is not enought

light intensity Necesary battery capacity without spare circles 0,5W x 24 x 4 =

48Wh => 48W/6V = 8Ah In case when device is in stand by mode, when noice is

smaller than rated then estimated consumation is less than half

8/10

Solar cellSolar cellSolartec 8-180Solartec 8-180

We choose 8V/180mA– Technology: monocrystalic

silicon - effectivity 16%– Dimensions: 183x125mm– Weight: 0,31kg– Supply power in season:

Winter – 1,5WSpring, Autumn – 4WSummer – 8W

9/10

FinishFinish

Has choosen – free2move Class 2 Module Solar cell after consultation with firm Solartec

and with regard to power has choose SMP 8 – 180

Has choosen gel acumulator Philips 6V/3,4Ah For power supply 3V has choosen power

changer MAX653

The endThe endThank‘s for your Thank‘s for your

attentionattention

Libor Hrbek