DCT Antares SB, Руководство пользователя

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6.13. (GR) REGIONS
6.13 (GR) Regions
Qualifiers :
Q
,
S
,
R
Use this message to create/edit polygon-defined regions. Managing a region
is different than managing any other configuration parameter, this because a
region can’t be defined only with one
GR
message, instead, several messages
are used to create a region, one for every point the region has. So when you
use a
GR
message, you are creating or editing only a region’s point.
The Active Flag of the message is used to set the last point of a region.
To undefine a region simply set the Active Flag of the first or second point
1
to
U
. The message has the following format:
AABBCDDDEEEEEFFFFGGGGGHHII
Chars Item Format Value Meaning
2 Region in-
dex AA 0-29 Region index of the point that is being con-
figured.
2 Point in-
dex
BB 00-49 Point index.
1 Last point
flag C flag Use:
1: The actual point is not the last
point of the region.
U: The actual point is the last point of
the region. Use this flag on points
00
or
01
to undefine a region.
8 Point’s
latitude DDD.EEEEE degrees WGS-84 point’s latitude. It does include
sign: Positive for north .
9 Point’s
longitude FFFF.GGGGG degrees WGS-84 point’s longitude. It does include
sign:
Positive for east .
2 Point’s
left neigh-
bor 1 HH 00-49,99 Index of the first left neighbor of the ac-
tual point. Use
99
to leave this field empty.
Check the explanation after this table .
2 Point’s
left neigh-
bor 2 II 00-49,99 Index of the second left neighbor of the
actual point. Use
99
to leave this field
empty. Check the explanation after this table .
The Antares SB
TM
has the ability to detect whether a vehicle is inside or
outside of a user defined polygon. In order to achieve this the point’s nu-
meration must follow the next simple rule:
The points must be numerated (starting on 0 and going up to a maximum
of 49) in ascending order according to each point’s longitude.
If two or more points share the same longitude their index ordering is not
relevant.
If the polygon were drawn with the geographical north pointing upwards
this rule will be achieved by numerating the points from left to right.
1
A polygon is defined by a minimum of three points
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