OXTS RT1003, Руководство пользователя

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Table 52. Identifier 630h (1584), MilliTime
a
a. MilliTime and MilliTimeSeonds both refer to the same bits on the CAN bus-however they are
decoded twice with a different scale in the DBC file. MilliTime needs to be stored as a signed
64-bit integer value as the current value already exceeds the limits of a 32-bit integer, however
this is not supported by all CAN software. To overcome that problem MilliTimeSeconds can be
stored as a 32-bit double-precision value, however limitations in the double-precision format
mean there may be an error of up to 5 ms and the resulting decimal numbers may contain
rounding errors. Where possible MilliTime should be used, otherwise use MilliTimeSeconds
with care.
Bit Len Type Unit × + Description Name
0 48 S ms 1 0 Milliseconds since the start of GPS time MilliTime
0 48 S s 0.001 0 Seconds since the start of GPS time MilliTimeSeconds
48 8 S s 1 0 GPS UTC offset UtcOffset
Table 53. Identifier 633h (1587), IsoOrientation
Bit Len Type Unit × + Description Name
0 16 S ° 0.01 0 ISO 8855 yaw angle IsoYawAngle
16 16 S ° 0.01 0 ISO 8855 pitch angle IsoPitchAngle
32 16 S ° 0.01 0 ISO 8855 roll angle IsoRollAngle
Table 54. Identifier 634h (1588), IsoVsVelocity
Bit Len Type Unit × + Description Name
0 16 S m/s 0.01 0 ISO 8855 vehicle system longitudinal
(forward) velocity
IsoVsLongitudinalVelocity
16 16 S m/s 0.01 0 ISO 8855 vehicle system lateral (left)
velocity
IsoVsLateralVelocity
32 16 S m/s 0.01 0 ISO 8855 vehicle system vertical (up)
velocity
IsoVsVerticalVelocity
Table 55. Identifier 635h (1589), IsoVsAcceleration
Bit Len Type Unit × + Description Name
0 16 S m/s² 0.01 0 ISO 8855 vehicle system
longitudinal (forward) acceleration
IsoVsLongitudinalAcceleration
16 16 S m/s² 0.01 0 ISO 8855 vehicle system lateral
(left) acceleration
IsoVsLateralAcceleration
32 16 S m/s² 0.01 0 ISO 8855 vehicle system vertical
(up) acceleration
IsoVsVerticalAcceleration