The LP-RESEARCH Motion Sensor CAN bus and USB version 2 (LPMS-CU2) is a miniature inertial measurement unit (IMU) / attitude and heading reference system (AHRS). The unit is very versatile, performing accurate, high speed orientation and relative displacement measurements. By the use of three different MEMS sensors (3-axis gyroscope, 3-axis accelerometer and 3-axis magnetometer) low-drift, high-speed orientation data around all three axes is achieved. Additionally, temperature and barometric pressure allow accurate altitude measurements. LPMS-CU2 communicates with the host system either via a CAN bus or USB connection. Depending on the configuration of the sensor, data transfer rates of up to 400Hz can be reached. The LPMS-CU2 fits both machine and human motion measurements for size and cost sensitive applications.
The unit contains a 32-bit digital signal processor capable of running all calculations on-board in real-time. For more information on our sensor fusion method please refer to the IMUcore description.
LPMS-CU2’s CAN bus interface allows connecting the sensor to a larger CAN bus infrastructure. The sensor supports a minimal CANopen implementation as well as a customizable sequential CAN message format. The amount of measurement data transmitted via CAN bus can be freely configured using the LPMS-Control software.
|Communication interface||CAN Bus, USB 2.0|
|Communication protocol||LpCAN / CANOpen (CAN port), LpBUS (USB port)|
|Size||34 x 34.5 x 15.7 mm|
|Orientation range||Roll: ±180°; Pitch: ±90°; Yaw: ±180°|
|Accuracy||< 0. 5° (static), < 2° RMS (dynamic)|
|Accelerometer||3 axes, ±20 / ±40 / ±80 / ±160 m/s2, 16-bits|
|Gyroscope||3 axes, ±125 / ±245 / ±500 / ±1000 / ±2000 °/s, 16-bits|
|Magnetometer||3 axes, ± 4 / ± 8 / ± 12 / ± 16 gauss, 16-bits|
|Pressure sensor||300 – 1100 hPa|
|Data output format||Raw data / Euler angle / Quaternion|
|Data transmission rate||up to 400 Hz|
|Power consumption||< 165 mW @ 3.3 V|
|Power supply||5 to 18 V DC (CAN Bus), 5 V DC (USB)|
|Connector||DB9 female (CAN Bus), Micro USB-B (USB)|
|Case material||ABS Plastic shell|
|Temperature range||– 40 to +80 °C|
|Software||C++ library for Windows, LpmsControl software and Open Motion Analysis Toolkit (OpenMAT) for Windows.|