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SAE J2735-Draft-Rev15 [issued: 01-30-07]
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92 -
This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
Used by: This entry is directly used by the following 3 other data structures in this standard (record type, descriptive name,
ASN.1, and XML name (if present) of each):
DF
DF
MSG
In addition, this item may be used by data structures in other ITS standards.
7.50 Data Element: DE_SunSensor
Use: The "Sun Sensor" Probe Data Element is intended to inform Probe Data Users as to the level of Sun Light in
the area the vehicle was traveling at the time the Probe Data snapshot was taken. The value of the Sun Sensor
data element ranges from 0-7, with 0 indicating "Complete Darkness", 1 indicating "Minimal Sun Light", and 7
indicating "Maximum Sun Light". This information could be sent to vehicles approaching the area to tell drives to
be prepared for sunny/clouding conditions ahead or a Weather Server for monitoring weather conditions in the area.
ASN.1 Representation:
SunSensor ::= INTEGER (0..1000) -- units of watts / m2
-- Note that units are still TBD,
-- perhasps a log scale is wanted here
XML Representation:
<xs:simpleType name="SunSensor" >
<xs:annotation>
<xs:documentation>
units of watts / m2
Note that units are still TBD,
perhasps a log scale is wanted here
</xs:documentation>
</xs:annotation>
<xs:restriction base="xs:unsignedShort">
<xs:maxInclusive value="1000"/>
</xs:restriction>
</xs:simpleType>
Used by: This entry is directly used by the following 2 other data structures in this standard (record type, descriptive name,
ASN.1, and XML name (if present) of each):
DF
DF
In addition, this item may be used by data structures in other ITS standards.
Remarks: It is recommended that Automotive Manufacturers divide the range of their Sun Sensors into 8
resistance ranges corresponding to the above scale. For Example: a sensor that has a resistance range from 12K
Ohms (No Light) to 250 Ohms (Max Light) will have the following resistance value ranges:
# 0= 10501 to 12000 Ohms
# 1=9250 to 10749 Ohms
# 2=7750 to 9249 Ohms
# 3=6250 to 7749 Ohms
# 4=4750 to 6249 Ohms
# 5=3250 to 4749 Ohms
# 6=1750 to 3249 Ohms
# 7=250 to 1749 Ohms