DIEN KHONG DAY CHO MOI NHA

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DIEN KHONG DAY CHO MOI NHA

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m L'hiec dicn ihoai di dung co ihc -^ac kin \ a n d a n g trong tui Lua ban, chicc l \ man hinh p h a n g k h o n g he c6 day d i e n . chicc xc 6 16 cha> dicn d u a c nap nang Urong qua mot tam bang khong day nam tren san nha tat ca nhCrng thict bi nay dcu dang hicn hiru trong mot toa nha k h o n g bicn hieu ngay a ngoai 6 thanh pho Boston, hiiu liicu cho chung la \ c mot t u a n g lai khmgdch

W i T n c i t y , mot c o n g ty hmh thanh lir itng d u n g nghien ciiu cua Hoc vien C o n g n g h e M a s s a c h u s c t i s (VIIT). hirong laj dnih dang lai each con n g u a i su d u n g nang lugng, cho phcp nap dien vao cac thict bi ma khong can ket noi vai 6 c a m . T r o n g p h o n g thi n g h i e m cua WiTricity. nhicu thicl bi d u a c truycn lai dicn qua khong khi rir nhfrng eupn day dien xoiin,

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" K h o n g kho d e hinh dung rang trong it nam tai. ban CO the di ten mot quan ca phe, ngoi x u o n g mot chiec glie, truy c a p vao mot viing truycn tai d i c n . va cir the sac chiec dicn thoai hay laptop cua m i n h " , theo lot Richard Martin, t r u o n g ban bien tap cua Pike, mot n h o m nghien ci'ru thi t r u a n g c h u y e n sau ve cac giai p h a p n a n g l u g n g

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lining minh ' • ( h i m g toi ily d o a n cong ngh§

iia> se b.il dau dieo each lutnig ly nhu each khiri dau eiiii inlcinct khiing day (Wi-fi)cach day khoang mpl ihap k\

Mailin c h o riing tiem nang irng dung Liiiig ngliiep cua truycn tai dicn khong day la vii Liing Ion, liiie bicl la diij viVi cac thiet bj nlnr 6 uiiliC'ii hay cac t a m ung khong day, d nluing iKfi moi t r u a n g khci khiin cho viec k ^ nni dicn qua day. Ben canh d o , anh cho rang iniNcn lai dicn khong day t h u a n g ihuan ti?n hifn \ a lliaii ihien \ o i moi t r u a n g him so voi each cam dicn qu.i 6 ciiiii lining thuang.

" R 6 rang co ral nhieu thi phan c6 the lap cl:i\ trong ITnh \ y c nay", Martin noi.

line Gilcr. G i a m doc cua WiTricity hinh dung \ e mot t u a n g lai nai cac thiet bi truycn dien deu nam chim irong tucmg va dual tham c.ie c i n nha. bicn chiing thanh nhimg ho gia dinh t h y e s u khting day O n g cho rangvdi igu6n c u n g cap dien du Kin \ a nhfmg bp phat .•aler) khong day c a n h o . n g u a i ta c6 the v|a h i n h ca mot eir:i hang lap hoa huae iniit toa nha van phong then each khong da>.

(. ac ihiei b\ sac dicn thong ihirang n h u day dien cua dicn ihoai di d o n g sir d u n g cam irng dicn nide (nivcn tai dicn Qua cam u n g dicn cir. mgl dongclieD dirue iriiycn qua i n r o n g dicn lir dirge tao bai vat dan dicn, loi ihiet bi liep nhan dicn co tn.rangdien tiithap hirn,

" l l a y so sanh \ a i ban ehai ehay dien changhan", Giler not. " N o hoat d o n g ra! hieu qua. nhung vanttS la no chi co the truycn tai dicn khong diiy trong pham

\ I \ ai inch".

C a c Ihiii-t bi cua WiTricity ciing ehia se nang l u g n g qua t r u a n g dicn lir. Tuy nhicn. khong giojig, n h u cac ihict bi n h u ban chai ehay dien hay day cam- iPod, cac thiet bi cua WiTricity san sinh ra cac truang diC'ii lu qua mot tien trinh ggi la ket noi cong hucraj tir, cho phep dicn d u o c truyen tai qua khoang cacli vai m.

Ket noi cong h u a n g la mot khai niem ma chiing ta CO the t h u a n g gap trong c u g c song. M o t ca sy opffl CO the lam v 5 ly r u g u v a n g b a n g e a c h hat mptni S 6 l . NGAY 05-1 20

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dan vol mpt tan so trung voi cpng huong am ciia ly rugu.

Nha sdng lap WiTricity d6ng thai la giao su v|t ly cua MIT, Marin Soljacic tilrag nay sinh thac mac lieu dien c6 the dugc truygn tir trong tudng t6i mpt thi8t bj di^n theo each tuang ty, khi ong bi ddnh thuc vao mpt dem nam 2007 bai tieng bip phat ra tu chiec dien thoai di dpng sap c^n pin cua vg.

Ong da lam thi nghiem vdi hai v^t cOng hu6ng dien tu rung tai mgt tan s6 nhat djnh va th5y rang chung cd th8 chia se dien qua truang di?n tu a mgt khoang each 1cm hon nhieu so voi cdc thiet bi ti>

thong thuang. Sau do k^t quA nghien cuu ciia ong da dugc cong bo tren tap chi Science vao cung nam, va WiTricity dugc s6m thanh lap sau do nham phdt triSn c6ng nghe nay vi muc dich thuang mai.

HI VpNG CHO THI TRI/fiTNG O T d D I E N ? Giler cho rang nhtrng vat li$u nhu g6, g^ch, va be tong v6 ca ban khong can l^i tir truang, cho phep hai thiet bi WiTricity co the truyen dien qua, vai dung lugng tu vai miliwatt tai vai kilowatt.

Do cac ho gia dinh co rat nhieu thiet bi di?n, nguai ta lo ngai rang viec tiep xuc voi hue xa dien tu cua cac thiet hi nay co th6 gay anh huong tai sire khoe. Nhimg Giler khSng dinh r§ng cong nghe cua WiTricity la an toan. Trong khi ca th6 con nguai phan ling rat manh lai dien truong (ciing loai vai phan ung cua thit ga hay bit tdt khi ta nau chung trong 16 vi song), Giler n6i rling co the con nguai se khong hSp thu dien cua tu truang a mure thap nhu d cac thi6t bi WiTricity.

"N^u b ^ t6n tai dugc bmh thucmg trong moi truang binh thuong cua Trai dat, thi tiic la ban se an toan vcd cac thiet bi cua WTricity", ong khang dinh.

"Cong nghe ciia chiing toi tao ra it btic xa han tir truang cua Trai d§t; no an toan han hang tram Ian so vai dien thoai di dpng, va tao lugng hue xa thap han mpt trieu l4n so vai may chyp cat lop MRI".

Ong cho bi6t WiTricity hien dang phat triSn cdc thik bi dien khong day, tii di?n thoai dang iPhone tai cac thi6t bi y t6 cay vao co the, hay cac robot quan su. Ca Giler va Martin cung cho rang nganh cong nghiep 6 to diSn se la mang thi trudng huang Igi dau tien tur cong nghe truyen tai dien khong day.

'TSIganh cong nghiep 6 t6 dien da nh§n ra rSng mpi ngudi se khong dimg 6 t6 dien ndu hp cit phai lien tuc dm day vao 6 sac", Giler noi. "Chung toi dang tim each giup viec sac diSn cho 6 to cung thuan tien nhu bam xang 6 tram xang".

Stfl.NGAYO^V"!'

Tren thanh ch3n chong va cua mgt chi6c 6 to dien 2 cira hi^u BMW, WiTricity c^i m^t cu6n d3y dien xodn CO khd nSng thu di?n tir cai cpng hucmg cid tr6n san ben du6fi 6 to. H? thong nay co the truyen tai toi 3300 watt mSi gid va cSn tir 4 tdi 6 ti6ng d% s^c day cho xe.

Mpt bao cio nghien curu thi truimg cua Pike gan day dy dodn rSng h? thong sac khong day se tao ra khic bi$t 16n cho thj tru6ng 6 to dipn von lau nay bi tr§m lang tren toan the gidi, giiip tang doanh thu 6 to di?n tu 120 nghin nam 2012 len mii-c 280 nghin vao cu6i thgp ky nely. Martin cho ring ly do chii y6u se lii su dau tu 16n cho cong ngh? tir cac nh^ san xuat 6 to di?n. Ong dy doan rang khi he thong mai tra nen ph6 biSn a cdc thanh pho va thi tran, sy gia tang thuan tien cua viec khong phdi cam day dien vao 6 se khi8n lua chpn mua 6 to di^n tra nen de chiu hem doi vdi nhimg khach hang theo thien huang tim kiem tien nghi.

Martin cho biet rang di$n khong day hi?n dang dupe sii dung a ca My ISn cac nuac khac trong nhung he thong mang tinh thir nghiem. O Han Quoc, cac nha nghien cuu dang dung cac bang nang lugng tren cac tuyfin duong xe buyt gia l|p d8 thii cung ckp nang lugng cho phuang tien chuyen cha nay. Con tai tru sa Google 6 California, diSn khong day dugc sir dyng mien phi cho mpi nhan vien di 6 to dien.

d chau Au, nha phat trien nang lugng khong day Qualcomm gan day da khoi dong mgt du an hai nam ph6i hgp voi Renault de thu nghiem tinh kha thi cua viec cai dien kh6ng day tren duong. Dy an co ten gpi Halo, CO ca cau gom cac cugn day cam ung dugc dat tren duong va dual bung 6 to. Khi mgt chiec xe ehay qua cac doan duong c6 cai cugn day cam ling, no se dugc tiep them nang lugng.

Viec xe duong giao thong d6 cai dat he thdng truyen nang lugng cho 6 to dien se t6n nhi6u ty USD va nhieu thap ky, nhung Martin dy ki^n khong lau nira nguoi ta se xay nhirng tram truyen nang lugng tai cac diem dimg tin hi6u giao thong, hay cac diem d6 xe buyt.

"Dieu do khong kho de hinh dung", Martin noi.

"Tucmg ty nhu vdi cac nha cung cap Internet khong day, don gian 1^ ban chi dang ky n h ^ mpt dich vy cy the, va he thdng se ty dpng thu ti8n cua ban khi ban tiSp nhan nang lugng tii mpt tram cung cap, hay cac bang ti6p dan tren duang.a

TTieo National Geographic

http://news.nationalgeographic.com/news/en- ergy/2012/12/121228-wireIess-power/

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