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SAE J2735-Draft-Rev26 [issued: 09-18-08]
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184 -
This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
<xs:enumeration value="sunSensor"/>
<xs:enumeration value="temporaryID"/>
<xs:enumeration value="throttlePosition"/>
<xs:enumeration value="throttleConfidence"/>
<xs:enumeration value="timeConfidence"/>
<xs:enumeration value="tractionControlState"/>
<xs:enumeration value="updateVector"/>
<xs:enumeration value="vehicleHeight"/>
<xs:enumeration value="vehicleLength"/>
<xs:enumeration value="vehicleMass"/>
<xs:enumeration value="vehicleSize"/>
<xs:enumeration value="vehicleStatusDeviceType"/>
<xs:enumeration value="vehicleType"/>
<xs:enumeration value="vehicleWidth"/>
<xs:enumeration value="verticalAcceleration"/>
<xs:enumeration value="verticalAccelerationThreshold"/>
<xs:enumeration value="wiperRate"/>
<xs:enumeration value="wiperStatus"/>
<xs:enumeration value="yawRate"/>
<xs:enumeration value="yawRateConfidence"/>
</xs:restriction>
</xs:simpleType >
</xs:union>
</xs:simpleType>
Used By: This entry is used directly by one other data structure in this standard, a MSG called
MSG_CommonSafetyRequest (Remove now?) <ASN> <XML>. In addition, this item may be used
by data structures in other ITS standards.
7.127 Data Element: DE_SteeringWheelAngleConfidence
Use: This DE is used to provide to listeners the confidence interval of the 95% confidence level for the
currently reported value of DE_SteeringWheelAngle, taking into account the current calibration and
precision of the sensor(s) used to measure and/or calculate the value. This data element is only to provide
the listener with information on the limitations of the sensing system; not to support any type of automatic
error correction or to imply a guaranteed maximum error. This data element should not be used for fault
detection or diagnosis, but if a vehicle is able to detect a fault, the confidence interval should be increased
accordingly.
The frame of references and axis of rotation used shall be accordance with that defined in SAE J670, Issued
1976-07 and its successors. Note the definitions provided in Figure 1 (Tire Axis System) and Figure 2
(Directional Control Axis Systems).
ASN.1 Representation:
SteeringWheelAngleConfidence ::= ENUMERATED {
notEquipped (0), -- B'00 Not Equipped
prec10deg (1), -- B'01 2 degrees
prec1deg (2), -- B'10 1 degree
prec0-02deg (3) -- B'11 0.02 degrees
}
-- Encoded as a 2 bit value
XML Representation:
<xs:simpleType name="SteeringWheelAngleConfidence" >
<xs:annotation>
<xs:appinfo>
notEquipped (0) -- B'00 Not Equipped
prec10deg (1) -- B'01 2 degrees
prec1deg (2) -- B'10 1 degree
prec0 02deg (3) -- B'11 0.02 degrees
</xs:appinfo>
<xs:documentation>
Encoded as a 2 bit value
</xs:documentation>
</xs:annotation>
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