UMAX0608XX‐1000. Tri‐Axial J1939 CAN Inclinometer. Version 9B
Page: 28-66
The
Accelerometer
function block configuration parameters are defined below.
Table 4. Accelerometer Function Block Configuration Parameters
Name
Default Value Range
Units Description
Input Filter
On
{Off, On}
–
Low-pass input filter
Input Filter Cut-Off
Frequency
5
[1…50]
Hz
Cut-Off Frequency when
Input Filter
is
On
Accelerometer
Sensor Range
1
1.5g
{1.5, 3, 6}
g
Accelerometer sensor
measurement range
1
Defined only for inclinometers with a high-performance sensor: AX060830, AX061000, AX060838,
AX060810, AX060811. Use sensor ranges above 1.5g only in high-vibration environments. Added in
firmware V6.00.
3.3 Angle
Measurement
The
Angle Measurement
function block calculates pitch, roll and gravity angles in the machine
frame based on the accelerometer sensor output. The machine frame is coincident with the
unit frame by default when the initial pitch and roll angles are zero in the
Unit Installation
function block.
Angle
Measurement
Pitch Angle
Roll Angle
Gravity Angle
Angular Measurement Latency
Angular Figure of Merit
Gravity Acceleration Error
Figure 12. Angle Measurement Function Block
The
Pitch Angle
continuous signal output defines the unit pitch angle
𝜃
in [deg]. It has ±90
[deg] range for Euler angles and ±180 [deg] for unit rotation angles. For tilt angles, it can be
either ±90 or ±180 [deg] depending on the
Tilt Angle Range
configuration parameter.
The
Roll Angle
continuous signal output defines the roll angle
𝜙
in [deg]. It has a full ±180
[deg] range for Euler and unit rotation angles. For tilt angles, it can be either ±90 or ±180 [deg]
depending on the
Tilt Angle Range
configuration parameter.
The
Gravity Angle
continuous signal output defines the gravity angle
𝜌
in [deg]. It has 0…180
[deg] range.
The
Gravity Acceleration Error
continuous signal output defines the gravity acceleration error
𝛿
in [g]. When the gravity acceleration error exceeds the
Maximum Gravity Acceleration Error
configuration parameter
𝛿
, the error state is set in the
Angular Figure of Merit
.
The
Angular Measurement Latency
continuous signal output defines the angular measurement
latency in [ms].
The
Angular Figure of Merit
discrete signal output defines whether the angular output data can
be trusted. It has the following set of states:
