System Overview
System Architecture
Pinout Description
M12 8-pin Connector
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M12 5-pin Connector
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Connection Interface
Model | Communication Interface | ||||
TTL | RS232 | RS422 | RS485 | CAN | |
LPMS-NAV3-TTL | ✓ | × | × | × | × |
LPMS-NAV3-RS232 | × | ✓ | × | × | × |
LPMS-NAV3-RS422 | × | × | ✓ | × | × |
LPMS-NAV3-RS485 | × | × | × | ✓ | × |
LPMS-NAV3-CAN | ✓ | × | × | × | ✓ |
Default settings for communication interface:
RS232/RS485/RS422/TTL: 115200bps，8N1
CAN: 500kbps, terminal resistor disabled
Coordinate System
The coordinate system for LPMS-NAV3 is shown on the label on the sensor:
Accelerometer output convention
A positive acceleration output will be produced when the sensor is accelerated at the same direction of the positive axes. When the sensor is at rest with Z axis pointing upwards, the calibrated output of the accelerometer is expected to be [0 0 +1g] indicating the acceleration due to the force of gravity.
Gyroscope output convention
Gyroscope output follows the right hand rule where rotation along an axis following the right hand convention will produce a positive angular velocity. The calibrated output of the gyroscope is expected to be close to zero when the sensor is at rest.
Magnetometer output convention
XYZ axes indicates the direction of magnetic field that generates a positive output reading in normal measurement configuration.
Euler output convention
Euler output is in degree. The rotation sequence follows global XYZ rotation. In other words, the current orientation of the sensor can be obtained by rotating at the euler values along global X → global Y → global Z axis.
Range of euler output is as follow:
X Angle: -180° ~ +180°
Y Angle: -90° ~ +90°
Z Angle: -180° ~ +180°
Specifications
Main Parameters
Parameter | Description | Value | Units | ||
|---|---|---|---|---|---|
Min. | Typ. | Max. | |||
Power supply | 5 | 12 | 36 | V | |
Dimensions | 50x42x28.15 | mm | |||
Weight | ~77.5 | g | |||
Euler Range | roll | -180 | 180 | ° | |
pitch | -90 | 90 | |||
yaw | -180 | 180 | |||
Resolution | 0.01 | ° | |||
Power consumption | LPMS-NAV3-TTL | 0.072 | W | ||
LPMS-NAV3-RS232 | 0.084 | ||||
LPMS-NAV3-RS422 | 0.072 | ||||
LPMS-NAV3-RS485 | 0.072 | ||||
LPMS-NAV3-CAN | 0.096 | ||||
Output rate | 5 | 100 | 500 | Hz | |
Baudrate | TTL/RS232/RS422 | 9600 | 115200 | 921600 | bps |
RS485 | 9600 | 115200 | 256000 | ||
CAN | 125K | 500K | 1M | ||
Communication Protocol | TTL/RS232/RS422/RS485 | LPBUS | |||
CAN | CANOpen/SequentialCAN | ||||
Temperature range | -20 | 20 | 80 | °C | |
Water proof | IP67 | ||||
Accelerometer Parameters
Parameter | Value | Unit |
Measurement range | ±2/±4/±8/±16 | g |
Linear acceleration sensitivity | 0.061/0.122/0.244/0.488 | mg/LSB |
Linear acceleration sensitivity change vs temperature | ±0.01 | %/°C |
Linear acceleration zero-g level offset accuracy | ±10 | mg |
Linear acceleration zero-g level change vs temperature | ±0.1 | mg/°C |
Acceleration noise density | 60 | μg/√Hz |
Gyroscope Parameters
Gyroscope Z-Axis
Parameter | Description | Value | Unit | ||
Min. | Typ. | Max. | |||
Scale factor | 24 bit | 17920 | LSB/dps | ||
Scale factor tolerance | 25°C | -2 | 2 | % | |
Scale factor variation over temperature | -3 | 4 | % | ||
Bias tolerance | 25°C | -1 | 1 | dps | |
Bias variation over temperature | -1 | 1 | dps | ||
Range | -400 | 400 | dps | ||
Non linearity | 25°C | -0.5 | 0.5 | %FS | |
Cross axis sensitivity | 25°C | -5 | 5 | % | |
Gyroscope X and Y Axis
Parameter | Value | Unit |
Measurement range | ±125/±250/±500/±1000/±2000/±4000 | dps |
Angular rate sensitivity | 4.375/8.75/17.50/35/70/140 | mdps/LSB |
Angular rate sensitivity change vs temperature | ±0.007 | %/°C |
Angular rate zero-rate level | ±1 | dps |
Angular rate zero-rate level change vs temperature | ±0.005 | dps/°C |
Rate noise density | 5 | mdps/√Hz |
Packaging details
