TEDGlobal 2011
Harald Haas: Wireless data from every light bulb
Harald Haas: Bežićni podaci iz svake žarulje
Filmed:
Readability: 3.8
2,722,597 views
Što kad bi svaka žarulja na svijetu također mogla prenositi podatke? Na skupu TEDGlobal, Harald Haas po prvi puta demonstrira uređaj koji može upravo to. Treperenjem svjetlosti iz jedne LED žarulje, brzinom prevelikom da bi to ljudsko oko zabilježilo, on prenosi puno više podataka od mobitelskog tornja -- i čini to na učinkovitiji, sigurniji i rasprostranjeniji način.
Harald Haas - Communications technology innovator
Harald Haas is the pioneer behind a new technology that can communicate as well as illuminate. Full bio
Harald Haas is the pioneer behind a new technology that can communicate as well as illuminate. Full bio
Double-click the English transcript below to play the video.
00:15
Do you know
0
0
2000
Znate li
00:17
that we have 1.4 million cellular radio masts
1
2000
3000
da imamo 1,4 milijuna mobitelskih antena
00:20
deployed worldwide?
2
5000
2000
postavljenih širom svijeta?
00:22
And these are base stations.
3
7000
2000
A to su bazne stanice.
00:24
And we also have
4
9000
2000
Također imamo
00:26
more than five billion
5
11000
2000
više od pet milijardi
00:28
of these devices here.
6
13000
2000
uređaja.
00:30
These are cellular mobile phones.
7
15000
3000
To su mobilni telefoni.
00:33
And with these mobile phones,
8
18000
2000
S tim mobitelima,
00:35
we transmit more than 600 terabytes of data
9
20000
2000
odašiljemo više od 600 terabajta podataka
00:37
every month.
10
22000
2000
svakoga mjeseca.
00:39
This is a 6 with 14 zeroes --
11
24000
2000
To je 6 sa 14 nula --
00:41
a very large number.
12
26000
2000
jako velik broj.
00:43
And wireless communications
13
28000
3000
A bežične komunikacije
00:46
has become a utility
14
31000
3000
postaju režije,
00:49
like electricity and water.
15
34000
2000
poput struje i vode.
00:51
We use it everyday. We use it in our everyday lives now --
16
36000
3000
Koristimo ih svakodnevno. Koristimo ih u svakodnevnom životu --
00:54
in our private lives, in our business lives.
17
39000
2000
u privatne svrhe, u poslovne svrhe.
00:56
And we even have to be asked sometimes, very kindly,
18
41000
4000
Čak nas ponekad zamole, vrlo ljubazno,
01:00
to switch off the mobile phone at events like this
19
45000
2000
da na skupovima poput ovoga isključimo mobitele,
01:02
for good reasons.
20
47000
3000
iz dobrih razloga.
01:05
And it's this importance
21
50000
2000
Ta važnost je razlog zašto sam
01:07
why I decided to look into the issues
22
52000
2000
odlučio razmotriti probleme
01:09
that this technology has,
23
54000
2000
koji stoje pred ovom tehnologijom,
01:11
because it's so fundamental to our lives.
24
56000
3000
jer je tako fundamentalna za naše živote.
01:14
And one of the issues is capacity.
25
59000
2000
Jedan od tih problema je kapacitet.
01:16
The way we transmit wireless data is by using electromagnetic waves --
26
61000
3000
Mi prenosimo podatke bežično pomoću elektromagnetnih valova --
01:19
in particular, radio waves.
27
64000
3000
konkretno, pomoću radio valova.
01:22
And radio waves are limited.
28
67000
2000
A radio valovi su ograničeni.
01:24
They are scarce; they are expensive;
29
69000
2000
Oni su rijetki; oni su skupi;
01:26
and we only have a certain range of it.
30
71000
3000
i pokrivaju samo određeni raspon.
01:30
And it's this limitation
31
75000
2000
A to se ograničenje
01:32
that doesn't cope
32
77000
2000
ne može nositi
01:34
with the demand of wireless data transmissions
33
79000
2000
sa zahtjevima bežičnog prijenosa podataka
01:36
and the number of bytes and data which are transmitted every month.
34
81000
3000
i s količinom bajtova i podataka koje odašiljemo svaki mjesec.
01:39
And we are simply running out of spectrum.
35
84000
2000
Naprosto nam ponestaje spektra.
01:41
There's another problem.
36
86000
2000
Ima i drugi problem.
01:43
That is efficiency.
37
88000
2000
Učinkovitost.
01:45
These 1.4 million cellular radio masts, or base stations,
38
90000
3000
Tih 1,4 milijuna mobilnih antena, ili baznih stanica,
01:48
consume a lot of energy.
39
93000
2000
troši puno energije.
01:50
And mind you, most of the energy
40
95000
2000
A podsjećam vas, većina energije
01:52
is not used to transmit the radio waves,
41
97000
2000
nije utrošena u transmisiju radio valova,
01:54
it is used to cool the base stations.
42
99000
3000
utrošena je u hlađenje baznih stanica.
01:57
Then the efficiency of such a base station
43
102000
2000
Tako je učinkovitost takve bazne stanice
01:59
is only at about five percent.
44
104000
3000
samo negdje oko pet posto.
02:02
And that creates a big problem.
45
107000
3000
I to stvara velik problem.
02:05
Then there's another issue that you're all aware of.
46
110000
3000
A tu je i problem kojega ste svi svjesni.
02:08
You have to switch off your mobile phone
47
113000
2000
Morate isključiti svoj mobitel
02:10
during flights.
48
115000
2000
tijekom leta.
02:12
In hospitals, they are security issues.
49
117000
3000
U bolnicama, mobiteli su sigurnosno pitanje.
02:15
And security is another issue.
50
120000
3000
A sigurnost je drugi problem.
02:18
These radio waves penetrate through walls.
51
123000
2000
Ti radio valovi prolaze kroz zidove.
02:20
They can be intercepted,
52
125000
2000
Može ih se presresti,
02:22
and somebody can make use of your network
53
127000
3000
i netko može upotrijebiti vašu mrežu
02:25
if he has bad intentions.
54
130000
2000
ako ima loše namjere.
02:27
So these are the main four issues.
55
132000
2000
To su, dakle, četiri glavna problema.
02:29
But on the other hand,
56
134000
2000
No, s druge strane,
02:31
we have 14 billion of these:
57
136000
2000
imamo 14 milijardi:
02:33
light bulbs, light.
58
138000
3000
žarulja, lampi.
02:36
And light is part of the electromagnetic spectrum.
59
141000
3000
A svjetlost je dio elektromagnetnog spektra.
02:39
So let's look at this in the context
60
144000
2000
Pa pogledajmo stvar u kontekstu
02:41
of the entire electromagnetic spectrum, where we have gamma rays.
61
146000
3000
čitavog elektromagnetnog spektra u kojem imamo gama zrake.
02:44
You don't want to get close to gamma rays, it could be dangerous.
62
149000
2000
Ne želite prići blizu gama zrakama, mogu biti opasne.
02:46
X-rays, useful when you go to hospitals.
63
151000
3000
X-zrake, korisne kad idete u bolnicu.
02:49
Then there's ultraviolet light.
64
154000
2000
Zatim je tu ultraljubičasta svjetlost.
02:51
it's good for a nice suntan,
65
156000
2000
Dobra je za preplanuo ten,
02:53
but otherwise dangerous for the human body.
66
158000
2000
ali je inače opasna za ljudsko tijelo.
02:55
Infrared --
67
160000
2000
Infracrvene --
02:57
due to eye safety regulations,
68
162000
2000
zbog propisa o sigurnosti vida,
02:59
can be only used with low power.
69
164000
2000
mogu se koristiti samo sa slabom strujom.
03:01
And then we have the radio waves, they have the issues I've just mentioned.
70
166000
3000
A onda su tu radio valovi, s problemima koje sam spomenuo.
03:04
And in the middle there, we have this visible light spectrum.
71
169000
3000
A ovdje u sredini, nalazi se spektar vidljive svjetlosti.
03:07
It's light,
72
172000
2000
To je svjetlost,
03:09
and light has been around for many millions of years.
73
174000
2000
a svjetlost je tu već mnogo milijuna godina.
03:11
And in fact, it has created us,
74
176000
3000
U stvari, ona nas je stvorila,
03:14
has created life,
75
179000
2000
stvorila je život,
03:16
has created all the stuff of life.
76
181000
2000
stvorila je sve što čini život.
03:18
So it's inherently safe to use.
77
183000
3000
Pa je inherentno sigurna za upotrebu.
03:21
And wouldn't it be great to use that for wireless communications?
78
186000
4000
Ne bi li bilo sjajno koristiti je za bežične komunikacije?
03:25
Not only that, I compared [it to] the entire spectrum.
79
190000
3000
Ne samo to, usporedio sam je sa cijelim spektrom.
03:28
I compared the radio waves spectrum --
80
193000
2000
Usporedio sam spektar radio valova --
03:30
the size of it --
81
195000
2000
njegovu veličinu --
03:32
with the size of the visible light spectrum.
82
197000
2000
s veličinom spektra vidljive svjetlosti.
03:34
And guess what?
83
199000
2000
I pogodite što?
03:36
We have 10,000 times more of that spectrum,
84
201000
3000
Imamo 10.000 puta više tog spektra,
03:39
which is there for us to use.
85
204000
3000
i on nam je na raspolaganju.
03:42
So not only do we have this huge amount of spectrum,
86
207000
3000
Tako da ne samo da imamo ogromnu količinu spektra,
03:45
let's compare that with a number I've just mentioned.
87
210000
2000
usporedimo to s brojem koji sam spomenuo.
03:47
We have 1.4 million
88
212000
2000
Imamo 1,4 milijuna
03:49
expensively deployed,
89
214000
2000
skupo postavljenih,
03:51
inefficient radio cellular base stations.
90
216000
3000
neučinkovitih mobilnih radio baznih stanica.
03:54
And multiply that by 10,000,
91
219000
2000
Pomnožite li to s 10.000,
03:56
then you end up at 14 billion.
92
221000
2000
dođete do broja od 14 milijardi.
03:58
14 billion is the number of light bulbs installed already.
93
223000
3000
14 milijardi je broj žarulja koje su već instalirane.
04:01
So we have the infrastructure there.
94
226000
2000
Dakle, infrastruktura već postoji.
04:03
Look at the ceiling, you see all these light bulbs.
95
228000
3000
Pogledajte strop, vidite sve te žarulje.
04:06
Go to the main floor, you see these light bulbs.
96
231000
2000
Odite do glavne pozornice, vidite te žarulje.
04:08
Can we use them for communications?
97
233000
2000
Možemo li ih koristiti za komunikacije?
04:10
Yes.
98
235000
2000
Da.
04:12
What do we need to do?
99
237000
2000
Što moramo učiniti?
04:14
The one thing we need to do
100
239000
2000
Jedna stvar koju valja učiniti
04:16
is we have to replace these inefficient incandescent light bulbs,
101
241000
3000
je ta da moramo zamijeniti neučinkovite klasične žarulje,
04:19
florescent lights,
102
244000
3000
florescentne žarulje,
04:22
with this new technology of LED,
103
247000
2000
s novom LED tehnologijom,
04:24
LED light bulbs.
104
249000
2000
LED žaruljama.
04:26
An LED is a semiconductor. It's an electronic device.
105
251000
2000
LED je poluvodič. On je elektronički sklop.
04:28
And it has a very nice acute property.
106
253000
4000
I ima vrlo lijepo precizno svojstvo.
04:32
Its intensity can be modulated
107
257000
3000
Intenzitet se može modulirati
04:35
at very high speeds,
108
260000
2000
na vrlo visokim brzinama,
04:37
and it can be switched off at very high speeds.
109
262000
3000
i može ga se isključiti na vrlo visokim brzinama.
04:40
And this is a fundamental basic property
110
265000
2000
A to je fundamentalno temeljno svojstvo
04:42
that we exploit
111
267000
2000
koje iskorištavamo
04:44
with our technology.
112
269000
3000
s našom tehnologijom.
04:47
So let's show how we do that.
113
272000
2000
Da pokažemo kako to činimo.
04:49
Let's go to the closest neighbor to the visible light spectrum --
114
274000
2000
Pođimo do najbližeg susjeda spektra vidljive svjetlosti --
04:51
go to remote controls.
115
276000
2000
daljinskih upravljača.
04:53
You all know remote controls have an infrared LED --
116
278000
2000
Svi znate da daljinski upravljač ima infracrveni LED --
04:55
basically you switch on the LED, and if it's off, you switch it off.
117
280000
3000
U principu, uključite LED, ili ga isključite.
04:58
And it creates a simple, low-speed data stream
118
283000
3000
To stvara jednostavnu struju podataka male brzine
05:01
in 10,000 bits per second,
119
286000
2000
s 10.000 bita u sekundi,
05:03
20,000 bits per second.
120
288000
2000
20.000 bita u sekundi.
05:05
Not usable for a YouTube video.
121
290000
2000
Neupotrebljivo za YouTube video.
05:07
What we have done
122
292000
2000
Mi smo razvili
05:09
is we have developed a technology
123
294000
3000
tehnologiju
05:12
with which we can furthermore
124
297000
3000
s kojom možemo dodatno
05:15
replace the remote control of our light bulb.
125
300000
2000
zamijeniti daljinski upravljač naše žarulje.
05:17
We transmit with our technology,
126
302000
2000
S našom tehnologijom prenosimo,
05:19
not only a single data stream,
127
304000
2000
ne samo jednu struju podataka,
05:21
we transmit thousands of data streams
128
306000
2000
prenosimo tisuće struja podataka
05:23
in parallel,
129
308000
2000
paralelno,
05:25
at even higher speeds.
130
310000
2000
na većim brzinama.
05:27
And the technology we have developed --
131
312000
2000
Tehnologija koju smo razvili --
05:29
it's called SIM OFDM.
132
314000
2000
zove se SIM OFDM.
05:31
And it's spacial modulation --
133
316000
2000
Riječ je o prostornoj modulaciji --
05:33
these are the only technical terms, I'm not going into details --
134
318000
3000
ovo su tehnički termini, ne upuštam se u detalje --
05:36
but this is how we enabled
135
321000
2000
ali na taj način smo omogućili
05:38
that light source
136
323000
2000
da svjetlosno tijelo
05:40
to transmit data.
137
325000
3000
prenosi podatke.
05:43
You will say, "Okay, this is nice --
138
328000
3000
Reći ćete, "Okej, to je zgodno --
05:46
a slide created in 10 minutes."
139
331000
2000
slajd napravljen za 10 minuta."
05:48
But not only that.
140
333000
2000
Ali nije samo to.
05:50
What we've done
141
335000
2000
Ono što smo učinili je
05:52
is we have also developed a demonstrator.
142
337000
3000
da smo također razvili i demonstrator.
05:55
And I'm showing for the first time in public
143
340000
2000
Prvi puta javno pokazujem
05:57
this visible light demonstrator.
144
342000
2000
demonstrator vidljive svjetlosti.
05:59
And what we have here
145
344000
2000
Ovo ovdje nije
06:01
is no ordinary desk lamp.
146
346000
3000
obična stolna lampa.
06:04
We fit in an LED light bulb,
147
349000
2000
U LED žarulju,
06:06
worth three U.S. dollars,
148
351000
3000
koja košta tri američka dolara,
06:09
put in our signal processing technology.
149
354000
2000
instalirali smo našu tehnologiju za obradu signala.
06:11
And then what we have here is a little hole.
150
356000
3000
Ovdje imamo mali otvor.
06:14
And the light goes through that hole.
151
359000
2000
Svjetlost prolazi kroz taj otvor.
06:16
There's a receiver.
152
361000
2000
Ovdje je prijamnik.
06:18
The receiver will convert these little, subtle changes in the amplitude
153
363000
3000
Prijamnik će pretvoriti male, suptilne promjene amplitude
06:21
that we create there
154
366000
2000
koje ovdje stvorimo
06:23
into an electrical signal.
155
368000
2000
u električni signal.
06:25
And that signal is then converted back
156
370000
2000
Taj signal se zatim ponovno pretvara
06:27
to a high-speed data stream.
157
372000
2000
u podatkovnu struju velike brzine.
06:29
In the future we hope
158
374000
2000
U budućnosti se nadamo
06:31
that we can integrate this little hole
159
376000
2000
da možemo integrirati ovaj mali otvor
06:33
into these smart phones.
160
378000
3000
u ove pametne telefone.
06:36
And not only integrate a photo detector here,
161
381000
3000
I ne samo integrirati foto detektor ovdje,
06:39
but maybe use the camera inside.
162
384000
3000
već možda i koristiti kameru koja je unutra.
06:43
So what happens
163
388000
2000
Što se događa
06:45
when I switch on that light?
164
390000
3000
kad uključim to svjetlo?
06:50
As you would expect,
165
395000
2000
Kao što biste očekivali,
06:52
it's a light, a desk lamp.
166
397000
2000
riječ je o svjetlosti, o stolnoj lampi.
06:54
Put your book beneath it and you can read.
167
399000
3000
Stavite knjigu pod nju i možete čitati.
06:57
It's illuminating the space.
168
402000
2000
Osvjetljava prostor.
06:59
But at the same time, you see this video coming up here.
169
404000
4000
Ali istovremeno, vidite video koji pristiže.
07:03
And that's a video, a high-definition video
170
408000
3000
A to je video, video visoke definicije
07:06
that is transmitted through that light beam.
171
411000
2000
koji se prenosi kroz tu zraku svjetlosti.
07:08
You're critical.
172
413000
2000
Kritički ste raspoloženi.
07:10
You think, "Ha, ha, ha.
173
415000
2000
Mislite, "Ha, ha, ha.
07:12
This is a smart academic doing a little bit of tricks here."
174
417000
3000
Evo pametnog učenjaka koji malo izvodi trikove."
07:15
But let me do this.
175
420000
3000
Ali učinimo ovo.
07:19
(Applause)
176
424000
5000
(Pljesak)
07:24
Once again.
177
429000
3000
Još jednom.
07:27
Still don't believe?
178
432000
3000
Još uvijek mi ne vjerujete?
07:30
It is this light
179
435000
2000
To je ovo svjetlo
07:32
that transmits this high-definition video in a split stream.
180
437000
3000
koje prenosi video visoke definicije u podijeljenoj struji.
07:36
And if you look at the light,
181
441000
3000
A ako pogledate svjetlost,
07:39
it is illuminating as you would expect.
182
444000
2000
ona osvjetljava, kako biste i očekivali.
07:41
You don't notice with your human eye.
183
446000
2000
Ne primjećujete ljudskim okom.
07:43
You don't notice the subtle changes in the amplitude
184
448000
3000
Ne primjećujete suptilne promjene amplitude
07:46
that we impress onto this light bulb.
185
451000
3000
koje smo uveli u ovu žarulju.
07:49
It's serving the purpose of illumination,
186
454000
2000
Ona služi u rasvjetne svrhe,
07:51
but at the same time, we are able to transmit this data.
187
456000
3000
ali istovremeno smo u stanju prenositi podatke.
07:54
And you see,
188
459000
2000
I vidite,
07:56
even light from the ceiling comes down here to the receiver.
189
461000
3000
čak i svjetlost sa stropa se spušta u prijamnik.
07:59
It can ignore that constant light,
190
464000
3000
On može ignorirati to konstantno osvjetljenje,
08:02
because all the receiver's interested in
191
467000
2000
jer je prijamnik zainteresiran samo
08:04
are subtle changes.
192
469000
3000
za suptilne promjene.
08:09
You also have a critical question now, and
193
474000
2000
Sad također imate kritičko pitanje,
08:11
you say, "Okay,
194
476000
2000
kažete, "Dobro,
08:13
do I have to have the light on all the time
195
478000
2000
moram li neprekidno imati uključeno svjetlo
08:15
to have this working?"
196
480000
2000
da bi ovo funkcioniralo?"
08:17
And the answer is yes.
197
482000
2000
A odgovor je - da.
08:19
But, you can dim down the light
198
484000
4000
Ali možete prigušiti svjetlo
08:23
to a level that it appears to be off.
199
488000
2000
na razinu na kojoj se čini da je isključeno.
08:25
And you are still able to transmit data -- that's possible.
200
490000
3000
I još uvijek možete prenositi podatke -- to je moguće.
08:28
So I've mentioned to you the four challenges.
201
493000
3000
Spomenuo sam vam četiri problema.
08:31
Capacity:
202
496000
2000
Kapacitet:
08:33
We have 10,000 times more spectrum,
203
498000
2000
Imamo 10.000 puta više spektra,
08:35
10,000 times more LEDs
204
500000
2000
10.000 puta više LED žarulja
08:37
installed already in the infrastructure there.
205
502000
2000
koje su već instalirane.
08:39
You would agree with me, hopefully,
206
504000
2000
Složit ćete se, nadam se,
08:41
there's no issue of capacity anymore.
207
506000
2000
da problem kapaciteta više ne postoji.
08:43
Efficiency:
208
508000
2000
Učinkovitost:
08:45
This is data through illumination --
209
510000
2000
Podaci dolaze kroz rasvjetu --
08:47
it's first of all an illumination device.
210
512000
2000
ovo je prvo rasvjetno tijelo.
08:49
And if you do the energy budget,
211
514000
3000
Ako izračunate energetski proračun,
08:52
the data transmission comes for free --
212
517000
2000
prijenos podataka je besplatan --
08:54
highly energy efficient.
213
519000
2000
visoka energetska učinkovitost.
08:56
I don't mention the high energy efficiency
214
521000
2000
I ne spominjem visoku energetsku učinkovitost
08:58
of these LED light bulbs.
215
523000
2000
tih LED žarulja.
09:00
If the whole world would deploy them,
216
525000
2000
Kad bi ih cijeli svijet priključio,
09:02
you would save hundreds of power plants.
217
527000
3000
uštedjeli biste stotine elektro-postrojenja.
09:05
That's aside.
218
530000
2000
To je dodatni plus.
09:07
And then I've mentioned the availability.
219
532000
2000
Spomenuo sam i dostupnost.
09:09
You will agree with me that we have lights in the hospital.
220
534000
3000
Složit ćete se da imamo svjetla u bolnici.
09:12
You need to see what to do.
221
537000
2000
Moramo vidjeti što činimo.
09:14
You have lights in an aircraft.
222
539000
2000
Imate svjetla u letjelicama.
09:16
So it's everywhere in a day there is light.
223
541000
2000
Svjetlost je posvuda.
09:18
Look around. Everywhere. Look at your smart phone.
224
543000
3000
Osvrnite se. Posvuda. Pogledajte svoj pametni telefon.
09:21
It has a flashlight, an LED flashlight.
225
546000
2000
Ima lampu, LED lampu.
09:23
These are potential sources for high-speed data transmission.
226
548000
4000
To su potencijalni izvori prijenosa podataka visokim brzinama.
09:27
And then there's security.
227
552000
3000
A tu je i problem sigurnosti.
09:30
You would agree with me
228
555000
2000
Složit ćete se sa mnom
09:32
that light doesn't penetrate through walls.
229
557000
3000
da svjetlost ne prodire kroz zidove.
09:35
So no one, if I have a light here,
230
560000
2000
Tako da nitko, ako ovdje imam svjetlo,
09:37
if I have secure data,
231
562000
2000
ako imam sigurne podatke,
09:39
no one on the other side of this room through that wall
232
564000
2000
nitko s druge strane ne može kroza zid
09:41
would be able to read that data.
233
566000
2000
pročitati te podatke.
09:43
And there's only data where there is light.
234
568000
3000
I podaci su samo ondje gdje ima svjetla.
09:46
So if I don't want that receiver to receive the data,
235
571000
4000
Pa ako ne želim da prijamnik prima podatke,
09:50
then what I could do,
236
575000
4000
tada mogu učiniti ovo,
09:54
turn it away.
237
579000
3000
okrenuti ga.
09:57
So the data goes in that direction, not there anymore.
238
582000
2000
Pa podaci idu u onom smjeru, nema ih više.
09:59
Now we can in fact see where the data is going to.
239
584000
3000
Sada zapravo možemo vidjeti kamo idu podaci.
10:05
So for me,
240
590000
3000
Pa za mene,
10:08
the applications of it,
241
593000
3000
primjena ovoga,
10:11
to me, are beyond imagination at the moment.
242
596000
4000
trenutno nadilazi maštu.
10:15
We have had a century of very nice, smart application developers.
243
600000
4000
Imali smo stoljeće razvijatelja pametnih aplikacija.
10:19
And you only have to notice, where we have light,
244
604000
3000
I morate samo primijetiti, gdje imamo svjetlost,
10:22
there is a potential way to transmit data.
245
607000
3000
tu je i potencijal za prijenos podataka.
10:25
But I can give you a few examples.
246
610000
3000
Mogu vam dati nekoliko primjera.
10:28
Well you may see the impact already now.
247
613000
3000
Možda već sad možete vidjeti učinak.
10:32
This is a remote operated vehicle
248
617000
2000
Ovo je plovilo na daljinsko upravljanje
10:34
beneath the ocean.
249
619000
2000
pod površinom oceana.
10:36
And they use light to illuminate space down there.
250
621000
3000
Koriste svjetlost da osvijetle prostor ondje dolje.
10:39
And this light can be used to transmit wireless data
251
624000
2000
Ta svjetlost se može upotrijebiti za bežični prijenos podataka
10:41
that these things [use] to communicate with each other.
252
626000
3000
koje ta plovila koriste za međusobnu komunikaciju.
10:44
Intrinsically safe environments
253
629000
2000
U intrinzično sigurnim okružjima
10:46
like this petrochemical plant --
254
631000
2000
poput ovog petrokemijskog postrojenja --
10:48
you can't use RF, it may generate antenna sparks,
255
633000
3000
ovdje ne možete koristiti RF, zbog iskrenja antena,
10:51
but you can use light -- you see plenty of light there.
256
636000
3000
ali možete koristiti svjetlost -- vidite da ima mnoštvo svjetla.
10:54
In hospitals,
257
639000
2000
U bolnicama,
10:56
for new medical instruments;
258
641000
3000
za nove medicinske instrumente;
10:59
in streets for traffic control.
259
644000
3000
na ulicama za kontrolu prometa.
11:02
Cars have LED-based headlights, LED-based back lights,
260
647000
3000
Auti imaju farove na bazi LED-a, stražnja svjetla na bazi LED-a,
11:05
and cars can communicate with each other
261
650000
2000
i automobili mogu komunicirati jedan s drugim
11:07
and prevent accidents
262
652000
3000
i spriječiti nesreće
11:10
in the way that they exchange information.
263
655000
3000
pomoću razmjene informacija.
11:13
Traffic lights can communicate to the car and so on.
264
658000
3000
Prometni uređaji mogu komunicirati s autima, itd.
11:16
And then you have these millions of street lamps
265
661000
3000
A imate i milijune uličnih lampi
11:19
deployed around the world.
266
664000
3000
postavljenih širom svijeta.
11:22
And every street lamp could be a free access point.
267
667000
2000
I svaka lampa bi mogla biti besplatni pristupni čvor.
11:24
We call it, in fact, a Li-Fi,
268
669000
2000
Mi to zovemo Li-Fi,
11:26
light-fidelity.
269
671000
2000
svjetlosna vjernost (light-fidelity).
11:28
And then we have these aircraft cabins.
270
673000
4000
Imamo i kokpite letjelica.
11:32
There are hundreds of lights in an aircraft cabin,
271
677000
4000
U kokpitu je na stotine žaruljica,
11:36
and each of these lights
272
681000
2000
i svako od tih svjetala
11:38
could be a potential transmitter of wireless data.
273
683000
3000
može biti potencijalni odašiljač bežičnih podataka.
11:41
So you could enjoy your most favorite TED video
274
686000
3000
Pa biste mogli uživati u omiljenom TED videu
11:44
on your long flight back home.
275
689000
2000
tijekom dugog leta kući.
11:46
Online life. So that is a vision, I think, that is possible.
276
691000
3000
Život online. To je vizija za koju mislim da je moguća.
11:55
So, all we would need to do
277
700000
2000
Dakle, sve što bismo trebali učiniti je
11:57
is to fit a small microchip
278
702000
2000
staviti mali mikročip
11:59
to every potential illumination device.
279
704000
3000
u svaki potencijalni rasvjetni uređaj.
12:02
And this would then combine
280
707000
3000
I ono bi tada kombiniralo
12:05
two basic functionalities:
281
710000
2000
dvije osnovne funkcionalnosti:
12:07
illumination and wireless data transmission.
282
712000
2000
rasvjetu i bežični prijenos podataka.
12:09
And it's this symbiosis that I personally believe
283
714000
3000
I ta je simbioza ona, kako vjerujem,
12:12
could solve the four essential problems
284
717000
2000
koja može riješiti četiri temeljna problema
12:14
that face us in wireless communication these days.
285
719000
3000
s kojima smo suočeni danas u bežičnim komunikacijama.
12:17
And in the future,
286
722000
2000
A u budućnosti,
12:19
you would not only have 14 billion light bulbs,
287
724000
3000
ne samo da biste imali 14 milijardi žarulja,
12:22
you may have 14 billion Li-Fis
288
727000
3000
imali biste 14 milijardi Li-Fi-jeva
12:25
deployed worldwide --
289
730000
2000
razasutih posvuda --
12:27
for a cleaner, a greener,
290
732000
2000
za čistiju, zeleniju,
12:29
and even a brighter future.
291
734000
2000
pa čak i svjetliju budućnost.
12:31
Thank you.
292
736000
2000
Hvala vam.
12:33
(Applause)
293
738000
12000
(Pljesak)
ABOUT THE SPEAKER
Harald Haas - Communications technology innovatorHarald Haas is the pioneer behind a new technology that can communicate as well as illuminate.
Why you should listen
Imagine using your car headlights to transmit data ... or surfing the web safely on a plane, tethered only by a line of sight. Harald Haas is working on it. He currently holds the Chair of Mobile Communications at the University of Edinburgh, and is co-founder and Chief Scientific Officer of pureLiFi Ltd as well as the Director of the LiFi Research and Development Center at the University of Edinburgh. His main research interests are in optical wireless communications, hybrid optical wireless and RF communications, spatial modulation, and interference coordination in wireless networks.
Haas has long been studying ways to communicate electronic data signals, designing modulation techniques that pack more data onto existing networks. But his latest work leaps beyond wires and radio waves to transmit data via an LED bulb that glows and darkens faster than the human eye can see. His group published the first proof-of-concept results demonstrating that it is possible to to turn commercially available light emitting diode (LED) light bulbs into broadband wireless transmission systems.
"It should be so cheap that it's everywhere," he says. "Using the visible light spectrum, which comes for free, you can piggy-back existing wireless services on the back of lighting equipment."
Harald Haas | Speaker | TED.com