NGHIEN CLfu - TRAO 0(!)l
NghiQn cd^a thiet kQ che thd^ thiet bi
phat tin hieu phuc vu tim Iciem, cciTu ho ctfu nan
• • • • • •
TS. VQ Dinh Hung, ThS. Lai Thj Van Quyen, KS. Nguyen Manh Th5ng Vien Phat triln Cdng nghe, Truyin thdng vd Hd trp cdng ddng (IMC)
TOM TAT
I 'iet Nam voi khi hdu nhiet ddi gio mua, cd ba hien ddi han 3000 km vd han 1 trieu km2 lanh hdi, dang chiu ninrng tdc dgng xdu ciia bien den khi hgu vd dugc cdnh bdo Id mot trong so it nuac bi dnh hieang nghiem trong nhdt ciia hien tugng inrac bien ddng. Bdi vgy, viec nghien cuv che tgo, cung cdp cdc thiet bi phdt tin hieu ciru hg, cim ngn tren bien Id rdt cdp bdch.
Trong khuon kho nhiem vii dgt ra, nhom nghien curi de tdi dd nghien cuu, che thie cdc thiet bi thu phdt tin hieu vo tuyen dien cho viee tim kiem cieu ho, ciru ngn nguai hogc nhom nguai gap su co tren bien. Cdc thiet bi dugc tich hgp thdnh he thong dong bo vd da dugc thu nghiem dgt kit qud tot trong dieu kien thuc te.
ABSTRACT
Vietnam, with tropical climate, has a long coast of more than 3000 km and territorial waters of more than one million km2. Vietnam is considered as one among the countries most seriously impacted by climate change and sea level rise. Therefore, research and manufacture equipments of signal transmitters for on-sea rescue are very exigent.
Within the scope of the task, the research team studied and experimentally manufactured radio transmitters for searching and rescuing individuals or group of people on the sea. The equipments are integrated in a synchronous system and good primary results were gained from experiments con- ducted for the system in practical conditions.
San pham nghien cihi va mot so van de cong nghe
He thdng dupc nghien curu chi tao thu hilu tu- Thilt bj phdt ca nhdn vd Tram thu phat nghiem gdm 3 thilt bi: Thilt bj phat ca nhan, trung gian dl tdng hpp, luu giii va bdo cdo cho luc Tram thu phat trung gian va Tram thu trung tam. lupng tim kilm curu hd ciiu nan. HI thdng dupc Thilt bj phat ca nhan cdng suit nhd cd thi gdn cai dat cac chuang trinh phdn mlm cho phep dilu trin phao ciiu sinh trong qua trinh hoat ddng tren khiln ddng bd hoat ddng cua he thdng, xu ly ca biln ciia ngudi. Tram thu phat trung gian dat tren sd du lieu, kit ndi he thdng vdi GPS vd cac mang phuang tiln (tau, thuyin, phao). Tram thu trung thdng tin liln quan. He thong cho phep phat hipn tam dat tren bd biln (hoac tren dao) tiep nhdn tin kjp thdi, chinh xac ddi tupng gap nan tren bien c ^
TAP CHf CO KHf VIET NAM ••* Sd 10 (Thdng 10 nam 2011)
NGHIEN CLfu - TRAO D 6 I
d cu ly 10 20 km tu Thiet bj phat ca nhan den Tram thu trung tam. Cdc thiet bj ciia hp thdng deu sii dung pin nang lupng mat trdi phu hpp vdi yeu cau ciiu hd, ciru nan tren bien.
Nhdm dc tai da giai quyet nhieu van de cdng nghe phuc tap. Da iing dung ky thuat 'Trdi phd, nhdy tan" trong vice phdt va thu tin hipu cao tan ddi sdng UHF Da sii dung cac module diC'n
tu-sd chuyen dyng trong viec md hda va giai ma tin hipu, dam bdo khd ndng chdng nhieu va bao mat ihdng tin ciia hp thdng. Da thiet ke chi tao cac bp antcn va pin ndng lupng mat trdi phii hpp vdi dicu kipn lam viec cua tu'ng thilt bj. Cdc bd pin nang lupng mdt trdi sir dung panel thdng dung nhung dupc dilu khien tdi uu qua trinh nap-xd dam bao nguon dipn dn dinh trong theo ylu cdu td chiic tim kiem, ciiu hd cuu nan (hinh 1)
Hmh /. Bi) dicu khicn nh ini nap-xa pin ndnii hnm^.: mat iriri
Hinh 2. Thiet biphdt cd nhdn gdn tren phao cieu sinh
Hinh 3. Train ihii phdt trung gian
9 1 TAP CHf CO KHf VlfiT NAM ••• Sd 10 (Thang i ^ • - - ^^' ^
NGHIEN CLfu - TRAO D 6 |
Cac chuang trinh phdn mlm cai dat trong djnh vj liln quan. Cdc chuang trinh phan mlm he thdng dam bdo cho viec kich hoat, dilu dupc xdy dung tren thudt todn md, tao giao dien khien va kit ndi ddng bd cac khdi chiic nang tien dung cho vile xii ly, luu tru' vd truyin co cua tung thilt bj, cac thilt bj trong he thdng va sd du lieu phuc vu hilu qud cdng tdc tim kilm, giiia he thdng vdi GPS, vdi cac mang thdng tin cu'u hd cuu nan.
Khong
CO
Luu ban tin vdo bd dim
Khong
« Xda bd dim
CO
-Tdch ban tin
-Luu vdo CO sd dii lieu -Hien thi
-Gui bdn tin dap trd
T
Hinh 4. Luu dd thudt todn phdn mim xie ly CSDL a Trgm thu trung tdm
KET LUAN
He thdng thilt bi da dupc kilm tra trong phdng thi nghiem va thii nghiem d dilu kiln thuc t l , dac biet la mdi trudng biin.
Nhiiu vdn dh cdng nghe da dupc giai quyit vdi su hop tac cua mdt sd ca sd nghien cuu khoa hoc va san xudt d Viet Nam ciing nhu
ddi tdc nudc ngoai. Nhirng kit qud kiim tra thu- nghilm cho thdy sdn phdm dat cdc chi tieu ky thuat d i ra. Tuy nhiln, day ciing mdi chi la nhiing kit qud budc ddu, rdt cdn dupc tiip tuc nghiln ciiu hodn thien de cd the dua san phdm vdo iing dung thuc tiln phuc vu cdng tac tim kiim, cu:u hd ciiu nan va nhiing hoat ddng khac trin biin.<»
TAP CHf CO KHf VIET NAM
