Product overview
The BWSENSING BW-IMU225E is a low-cost CAN inertial measurement unit for integration into unmanned aircraft, robots, autonomous vehicles and stabilization systems. Its sensing specifications cover a gyroscope and an accelerometer, with CAN output at 500 Hz. Nonlinearity compensation, orthogonality compensation and temperature compensation support its measurement function. Electrical integration requires a 9–36 V DC supply, with operating current specified as 30 mA and a maximum of 40 mA.
The physical configurations comprise a packaged unit measuring 97 × 63 × 27.2 mm and a bare-board unit measuring 60 × 54 × 6 mm. Bare-board length and width can vary by ±1 mm, so installation space must accommodate that dimensional qualification. The operating range is −40 to +85 °C. Measurement limits include a ±400°/sec gyroscope range and ±2 g acceleration range on all three axes; bias-stability figures depend on the stated averaging intervals and temperature conditions.
Specifications
| Specification | Value & conditions |
|---|---|
| Product identity and type | BWSENSING BW-IMU225E low-cost CAN inertial measurement unit |
| Signal compensation | Nonlinearity compensation and orthogonality compensation |
| Output interface | CAN |
| Supply voltage | 9–36 V DC |
| Operating current | 30 mA; 40 mA maximum |
| Operating temperature | −40 to +85 °CTemperature compensation provided. |
| Storage temperature | −55 to 100 °C |
| Gyroscope resolution | 0.01°/sec |
| Gyroscope measurement range | ±400°/sec |
| Gyroscope bias stability at 100 s | Less than 2°/hRoom temperature; 100 s, 1σ. |
| Gyroscope bias stability at 10 s | Less than 20°/hRoom temperature; 10 s, 1σ. |
| Angular random walk coefficient | Less than 0.1°/√h |
| Gyroscope bias repeatability | Less than 50°/h1σ. |
| Gyroscope scale factor nonlinearity | ≤100 ppm1σ. |
| Gyroscope scale factor repeatability | ≤100 ppm1σ. |
| Output frequency | 500 Hz |
| Accelerometer measurement range | ±2 gX, Y and Z axes. |
| Accelerometer resolution | 0.01 mg |
| Accelerometer bias | 0.15 mg |
| Accelerometer bias stability at 100 s | 0.001 mg25 °C; 100 s; 1σ. |
| Accelerometer bias stability at 10 s | 0.01 mg25 °C; 10 s; 1σ. |
| Electrostatic discharge protection | IEC 61000-4-2, Level IVContact discharge: 8 kV; air discharge: 15 kV. |
| Electrical fast transient burst immunity | IEC 61000-4-4, Level IVRepetition frequency: 5 kHz; positive and negative power terminals: 4 kV; signal lines: 2 kV. |
| Surge immunity | IEC 61000-4-5, Level IVPositive and negative power terminals and signal lines; common mode: 4 kV. |
| Packaged dimensions | L97 × W63 × H27.2 mmPackaged product. |
| Bare-board dimensions | L60 × W54 × H6 mmBare-board product; length and width may vary by ±1 mm; actual product dimensions govern. |
| Intended applications | Unmanned vessels and underwater robots; construction machinery; platform stabilization; automated guided vehicles; heavy trucks; autonomous driving; robotics; unmanned aircraft |
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