Advertisement
6$
9
5HYHUVH LQWHUORFNLQJ
,I WKH SURWHFWLRQ V\VWHP LV LQVWDOOHG DV EDFNXS SUR
WHFWLRQ LQ D VLQJOH HQG IHHG WUDQVIRUPHU FLUFXLW WKH
GLVWDQFH UHOD\ FDQ EH XVHG WR SURYLGH KLJK VSHHG
SURWHFWLRQ IRU WKH EXVEDU ZLWKRXW HQGDQJHULQJ WKH
VHOHFWLYLW\ IRU WKH RXWJRLQJ OLQHV
'LVWDQFH ]RQHV = DQG = WKHQ VHUYH DV EDFNXS
VWDJHV IRU IDXOWV RQ WKH RXWJRLQJ OLQHV IRU H[DPSOH
DW % DV LOOXVWUDWHG LQ )LJXUH 7KH GLVWDQFH ]RQH
VHWWLQJV VKRXOG EH EDVHG RQ WKH FKDUDFWHULVWLFV RI
WKH VKRUWHVW OLQH
7KH RYHUUHDFKLQJ ]RQH =% ZKRVH GHOD\ WLPH 7%
ZLOO EH VHW KLJKHU WKDQ WKH SLFNXS WLPH RI DQ\ VXERU
GLQDWH UHOD\ ZLOO EH EORFNHG LI D VXERUGLQDWH UHOD\
KDV SLFNHG XS $V LOOXVWUDWHG LQ )LJXUH WKH SLFN
XS VLJQDO ZLOO EH IHG WKURXJK WKH UHFHLYHU LQSXW WR WKH
SURWHFWLRQ V\VWHP +RZHYHU LQ DFFRUGDQFH ZLWK LWV
7%
=%
7%
)LJXUH
5HYHUVH LQWHUORFNLQJ VFKHPH JUDGLQJ RI GLVWDQFH ]RQHV H[DPSOH
&*&
SXUSRVH DQG LQ WKH DEVHQFH RI VXFK DQ LQSXW VLJQDO
WKLV ]RQH JXDUDQWHHV UDSLG GLVFRQQHFWLRQ RI WKH
EXVEDU LQ WKH FDVH RI
)DXOW LQ WKH RXWJRLQJ WUDQVIRUPHU FLUFXLW IRU H[DP
SOH LQ $
)DLOXUH RI D OLQH SURWHFWLRQ UHOD\
5HYHUVH LQWHUORFNLQJ LV DFKLHYHG E\ GHOLEHUDWH UH
OHDVH RU EORFNLQJ RI WKH RYHUUHDFKLQJ ]RQH =% ,W
FDQ EH XVHG LQ D EORFNLQJ PRGH DV VKRZQ LQ )LJXUH
RU LQ UHOHDVH PRGH E\ D QRUPDOO\ FORVHG FLUFXLW
7R DYRLG WUDQVLHQW IDOVH VLJQDOV DIWHU GLVFRQQHFWLRQ
RI H[WHUQDO IDXOWV WKH EORFNLQJ IXQFWLRQ LV H[WHQGHG
E\ D WUDQVLHQW EORFNLQJ WLPH 7% LQ )LJXUH XQ
GHU UHYHUVH LQWHUORFN FRQGLWLRQV
=
=%
$
/
)DXOW
/
)DXOW
7ULS
/
)DXOW
/
)DXOW
0HWKRG RI RSHUDWLRQ
=
7
7%
%
7
7$
VKRUWHVW
OLQH
Advertisement
