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SAE J2735-Draft-Rev15 [issued: 01-30-07]
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95 -
This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
DF
MSG
In addition, this item may be used by data structures in other ITS standards.
7.54 Data Element: DE_TimeConfidence
Use: This DE is used to provide to listeners the confidence interval of the 95% confidence level for the currently
reported value of time, 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.
ASN.1 Representation:
TimeConfidence ::= ENUMERATED {
notEquipped (0), -- B'0000 Not Equipped
time-100-000 (1), -- B'0001 100 Seconds
time-050-000 (2), -- B'0010 50 Seconds
time-020-000 (3), -- B'0011 20 Seconds
time-010-000 (4), -- B'0100 10 Seconds
time-002-000 (5), -- B'0101 2 Seconds
time-001-000 (6), -- B'0110 1 Second
time-000-500 (7), -- B'0111 0.5 Seconds
time-000-200 (8), -- B'1000 0.2 Seconds
time-000-100 (9), -- B'1001 0.1 Seconds
time-000-050 (10), -- B'1010 0.05 Seconds
time-000-020 (11), -- B'1011 0.02 Seconds
time-000-010 (12), -- B'1100 0.01 Seconds
time-000-005 (13), -- B'1101 0.005 Seconds
time-000-002 (14), -- B'1110 0.002 Seconds
time-000-001 (15) -- B'1111 0.001 Seconds
}
XML Representation:
<xs:simpleType name="TimeConfidence" >
<xs:annotation>
<xs:appinfo>
notEquipped (0) -- B'0000 Not Equipped
time 100 000 (1) -- B'0001 100 Seconds
time 050 000 (2) -- B'0010 50 Seconds
time 020 000 (3) -- B'0011 20 Seconds
time 010 000 (4) -- B'0100 10 Seconds
time 002 000 (5) -- B'0101 2 Seconds
time 001 000 (6) -- B'0110 1 Second
time 000 500 (7) -- B'0111 0.5 Seconds
time 000 200 (8) -- B'1000 0.2 Seconds
time 000 100 (9) -- B'1001 0.1 Seconds
time 000 050 (10) -- B'1010 0.05 Seconds
time 000 020 (11) -- B'1011 0.02 Seconds
time 000 010 (12) -- B'1100 0.01 Seconds
time 000 005 (13) -- B'1101 0.005 Seconds
time 000 002 (14) -- B'1110 0.002 Seconds
time 000 001 (15) -- B'1111 0.001 Seconds
</xs:appinfo>
<xs:documentation>
Encoded as a 4 bit value
</xs:documentation>
</xs:annotation>
<xs:union>
<xs:simpleType>