Microsoft Word - Bien Webcam thanh Camera quan sat

http://www.vn-zoom.com/f229/ticm-phacn-mecm-bieen-webcam-thacnh-camera-quan-saet-998365.htmlBn cn mt h thng quan st quan mng nhng cc h thng s dng camera IP hay camera chuyn dng thng rt t tin lm bn bn khon. Mt gii php l s dng cc webcam gi r kt hp phn mm i-Catcher Sentry s gip bn gt b bn khon trn.Bi vit ny s hng dn thit lp h thng camera quan st qua s dng cc webcam bt kv phn mm i-Catcher Sentry http://www.icode.co.uk/icatcher/products/sentry.html)

ngh chun b:01 PC- c 01 card mng (nn t a ch IP tnh cho PC ny)- c s cng usb ln hn hoc bng s webcam m bn mun dng vo h thng camera quan st- 01 ng mng ring vi modem ADSL (dng k vi hng xm hoc qun game l khng c nh, tr trng hp bn vo c modem thit lp)- Phn mm i-Catcher Sentry c th down ti www.icode.co.uk/icatcher/products/sentry.html Lu : dng cng nhiu webcam th my cn c nhiu ram v card ho tt mt cht ( git khi chy nhiu webcam cng 1 lc).Bi vit gm 03 phnPhn I: Hng dn to host trn http://www.dyndns.com (hoc c th s dng ca www.no- ip.com)

Phn II: Hng dn thit lp cu hnh trong modem (DMZ, Port forwarding hay NAT) Phn III: Hng dn s dng v cu hnh phn mm i-Catcher SentryPhn I: Hng dn to host trn http://www.dyndns.comTi sao phi to host?Nh cc bn bit. Mt my tnh c ni mng internet s bao gm 02 a ch IP1. a ch IP ca my khi giao tip vi cc my khc trong mng, VD: 10.0.0.22,192.168.1.2 ...2. a ch IP khi giao tip vi cc my trn internet, a ch ny c cp bi cc ISP m bn ng k dch v (VNPT, Viettel, FPT ...) v a ch ny thng thay i sau mi ln ta tt bt modem ADSL (connect/disconnect) (tr trng hp bn ng k gi cc c IP tnh th a ch ny mi c nh - v nu bn ng k gi c IP tnh th c th b qua phn to host ny). Mun bit a ch IP internet ca bn l g, trn a ch ca trnh duyt internet g vo dng http://checkip.org bn s thy dng s to ng hin ln - chnh l a ch IP internet ca bnvd: IP internet hin ti ca ti l

a ch ny chnh l ci ta cn bit khi mt my tnh khc truy cp v h thng camera quan st ca mnh. V n thay i ln bn s khng th bit chnh xc n thay i v a ch no truy cp. Chnh v th ta phi to host. Tn host ny l c nh, mi khi a ch IP internet ca bn thay i th host ny s t ng thay i a ch ca n thnh a ch IP thay i v vy bn khng cn quan tm n a ch IP rc ri kia, ch cn nh chnh xc tn host ca bn l bn s truy cp c v h thng camera quan st ca mnhLu : l tt c cc my trong cng mt h thng mng LAN s c chung a ch IP internet v th ta dng my tnh t xa truy cp v n s khng bit s vo i vo my no trong mng t a ch IP internet v forward port hay Nat s cho n bit n s phi i vo my no theo ng ci m bn cn - trnh by phn IITo Hosttruy cp vo website http://www.dyndns.com sau click vo Create Account to mt ti khon.

in y cc thng tin to mt account ca bn (nh cho a ch email thc v n sgi email v bt buc bn phi xc nhn qua email)

Sau khi hon tt, mt thng bo gi email ti a ch email m bn dng ng kCheck mai thi, bn s nhn c mt email t support@d yndns.com gi ti email m bn dng ng k, click vo ng link theo hng dn hon thnh qu trnh ng k ca bn.sau khi hon thnh bn s nhn c thng bo ng k thnh cng trn ca Dyndnsng nhp vo https://www.dyndns.com/account/ vi ti khon m bn ng k sau click vo Add Host services

in host name m bn mun, chn ui m rng danh sch th xung vd: thandieu.homeip.netMc IP address click vo Use auto detected IP... ly IP t ng, cc thit lp khc mc nh sau nhp vo creat hostNu to thnh cng, bn s nhn c thng bo nh sau (vi host m bn ng k - cati l thandieu.homeip.net)C host ri ta s phi lm g y, vic tip theo l gn host cho a ch IP internet ca mnh sao cho khi a ch IP ny thay i th host cng s t ng cp nht theo.c 2 cch lm:1. dng phn mm: cch ny c ci d l nu windows cha c ng nhp m ip c thay i th n cng p tay cho n khi vo hn windows. (cch ny khng cp y nh)Lu : DynDns s t ng xa ti khon nu bn khng cp nhp a ch IP trong vng 35 ngy.Gi y bn c th xem camera online, min sao bn phi ang kt ni Internet v cp nhp a ch IP hin thi vo c s d liu ca DynDNS. my t ng cp nhp a ch IP mi khi kt ni Internet, bn c th chn mt trong cc phn mm a chhttp://www.d yndns.org/service/dyndns/clients.html , v d nh phn mm min ph DynDNS Update thc hin vic ny.2. add vo modem (a s modem bi gi h tr DNS roi) cch ny n gin hn v hiu qucao... ch cn modem bt l host s lun cp nht c IP internet - ti s hng dn cc bn dng cch ny. (s hng dn trong phn II cho tin v n lin quan n thit lp trong modem)Phn II Hng dn Port forwarding Port NAT v DMZ A. Khi nim c bnNh ni trn, tt c cc my tnh trong mng LAN s c cng mt a ch IP internet. Vd bn c 3 my tnh A, B, C, D trong my C dng lm h thng camera quan st v a ch IP Lan ln lt ca mi my lMy A: 192.168.1.3My B: 192.168.1.4My C: 192.168.1.5My D: 192.168.1.6a ch internet l: 210.245.52.205 (c 4 my u chung a ch internet ny)Vy khi bn t my tnh xa thng qua internet truy cp v a ch IP internet(210.245.52.205) quan st, khi n a ch 210.245.52.205 n s khng hiu l bn nhvo my tnh no A, B, C, D? v portforward hay NAT s gip bn lm iu ny, tc l chnh cho n truy cp vo my C (my dng lm h thng camera quan st)B. Cc cch m portThng thng, c hai cch m port my mnh ra Internet nhm truy cp qua li gia cc my tnh trong LAN v ngoi Internet trn hu ht cc DSL/ADSL Router l: DMZ v port forward.- Cch 1:

Dng DMZ: ci ny l cch n gin v d nht, ch cn Enable DMZ vthm (add) mt IP ca computer dng lm h thng camera quan st: v d: 192.168.1.2) vo DMZ th lp tc ci my c IP s m ht cc cng ra Internet, tc l s chng cn firewall na. V vic sau cng l cu hnh phn mm i-Catcher Sentry l xong- Cch 2:

IP, Port forward: l vic cn thit m ca gia my lm h thng camera quan st v my dng quan st thng qua internet. a s cc DSL Router hoc DSL Modem c NAT u s dng firewall chn cc dng truy cp t cc my trong LAN (internal network) vi mng Internet, mt ng mn c o (open/ forward) xuyn qua firewall cc my tnh trong LAN c th truy cp vo c vi my tnh ngoi Internet thng qua 1 cng (port) xc nh ta gi l port forward. Tc l ta s in mt port v mt IP vo ch Virtual sever/Port forward trong modem, vic sau cng l add ci IP ny cho Windows v add ci port ny vo phn mm i-Catcher Sentry l xong.Chnh v vy port forward l gii php an ton hn khi m cng my mnh vi Internet chod cu hnh kh hn s dng DMZ v ch c 1 port (hoc vi port) c m.B. Thit lp modemNh ni trn, c 02 cch thit lp trong modem: port forward & DZM, trong DZM l cch thc hin d nhtHin ti c rt nhiu loi modem ADSL vi giao din cu hnh khc nhau nn trong khun kh bi vit kh c th m t ht c cc cch thit lp. Ti s lm v d vi modem ADSL Dlink DSL-520T (cc modem khc tng t hoc tham kho file gi km)a). dng DZMm trnh duyt ln, g vo a ch 192.168.1.1. s dng user/password: admin ng nhp. Sau khi vo ti giao din ca modem, trn th advance sau chn DZM. Trong mc IP address nhp vo a ch IP ca my dng lm h thng camera quan st (192.168.1.5) sau nhn apply chp nhn thit lp ny.

Vy l xong phn DZM, tuy nhin cn mt mc add host nh ni trn, ta s chuyn sang phn add host vo modemAdd Host vo modemChn th Home, sau chn mc Dynamic DNS (cc modem khc c th ch l DNS) chn trang ch m bn ng k ( y l www.d yndns.org) sau in username, password v tn host ng k ban u

sau vo th tools chn mc system ri nhn save and reboot lu li cu hnh v khing li modem (mt khong 2 - 5 pht modem khi ng li)

b). dng port forward - cch ny bn c file gi kem nha, bn lm theo cch trn cngOKie roi y tu bi con ti niuPhn 3: Hng dn s thit lp v s dng phm mm i-Catcher SentryT giao din chnh ca i-Catcher Sentry, bn nhn vo nt Video feed trn thanh cng c tin hnh chn camera cn quan st (v c th my tnh ca bn kt ni vi nhiu webcam hay thit b quan st khc). Trong hp thoi va xut hin, mc Capture device, chn model webcam cn s dng t trnh n th xung v nhn OK. Tip n, nhn nt Source, trong hp thoi Video Source Configuration Properties, bn hy iu chnh sng, tng phn, bo ha mu, cht lng nn nh cng nhiu thng s khc, nhn OK kt thc. .Vi i-Catcher Sentry, bn c th gim st khu vc t webcam bng 2 cch: trc tip trn my tnh ci phn mm ny hoc t my tnh khc trn mng (LAN hay Internet) qua giao din web.Nu mun quan st trc tip t my tnh c kt ni webcam, bn nh du chn mc Show streamings ngay trn thanh cng c v ca s Video Stream s xut hin ngay sau ; cng c th c ca s Motion Windows. Video Stream s phn nh theo thi gian thc hnh nhtrong khu vc gim st ca webcam v bn c th phng to/thu nh hnh nh ln 2 ln. Trong khi , ca s Motion Windows gip bn xc nh vng cn thit lp cnh bo khi pht hin s xm nhp tri php (motion detect), mc nh s l ton b khu vc webcam gim st. to mi mt vng c cnh bo, bn nhn vo biu tng cui cng trn thanh cng c ca ca s Motion Detect, chn New v trn ca s hin th khu vc webcam quan st s xut hin 1 khung ch nht. Bn hy di chuyn, iu chnh kch thc khung ny ph hp vi vng cn thit lp cnh bo, c th tip tc chn New to nhiu v tr khc, sau nhn OK kt thc. kch hot tnh nng pht hin di chuyn (tc v ny cng kch hot kh nng gim st qua mng), bn nhn vo nt Start monitoring trn thanh cng c. Khi pht hin s di chuyn trong khu vc gim st, i-Catcher Sentry c kh nng gi thng tin cnh bo (km hnh nh) qua email, ftp hay pht ra m thanh (qua loa my tnh) hay khi chy chng trnh khc trn my tnh.Nu my tnh ci i-Catcher Sentry c ni mng ni b hoc Internet, bn c th quan st t xa thng qua mt trnh duyt web. Tuy nhin, cng vic u tin m bn cn thc hin l bt tnh nng my ch HTTP ca phn mm ny. Bn nhn nt Settings trn thanh cng c, chn Configure Manually v sau nhn vo th HTTP server. Tip n, nh du chn Enable embedded HTTP Server, chn a ch IP ca my tnh ang s dng t trnh n th xung, sau nhn OK. Hy m bo, phn mm ang chy ch pht hin di chuyn (nt Start monitoring chuyn thnh nt Stop monitoring).T mt my tnh khc, bn hy m trnh duyt, g vo a ch IP va chn trn (v d192.168.0.145), mt trang web vi hnh nh khu vc webcam quan st s xut hin. Bn cng c th thc hin phng to/thu nh v chn cht lng nh hin th ngay trn trang web ny. Trong qu trnh thc hin bi vit ny, ti c th cng lc t 6 my tnh (s dng IE hoc Firefox) quan st t xa trn mng ni b vi webcam Creative Go Plus v nhn thy hnh nh chuyn ng rt "mt".Ngoi ra, nu my tnh gn webcam ang s dng mt kt ni bng thng rng ADSL vi a ch IP ng v bn c nhu cu quan st webcam ny t bt k u trn Internet, hy ngh n vic cu hnh modem/router s dng dch v DNSXem li khi cn thitGn nh chc chn l bn khng th tc trc 24/24 trc mn hnh my tnh quan st nhng g ang din ra trong khu vc m webcam quan st. Tht may mn, mi khi pht hin s di chuyn (tnh nng Motion Detect c kch hot), i-Catcher Sentry lu li nhng hnh nh ny di dng tp tin JPEG v cung cp tnh nng xem li (playback) di dng slideshow. T giao din chnh, bn nhn vo nt Playback trn thanh cng c v mt ca s mi s xut hin. Bn c th chn xem li cc hnh nh vo tng thi gian c th (ngy v gi) cng nh in nh ny ra giy hay ghp chng thnh tp tin video nh dng AVI. Mt tnh nng tng t cng c h tr khi quan st t trnh duyt: nhn chut vo lin kt Playback bn tri giao din web v s dng ging nh phn mm trn my tnh.Bi vit ch gii thiu nhng tnh nng c bn nht ca phn mm i-Catcher Sentry, bn hy tip tc khm ph bin chic webcam rt quen thuc tr nn hiu qu hn trong vai tr mt thit b quan st t xa.*************