Product overview
The BWSENSING BW-IMU127C is an inertial measurement component for integration into equipment including unmanned aircraft, robots, autonomous vehicles and stabilized platforms. Its sensing architecture combines a gyroscope with an accelerometer specified across the X, Y and Z axes. Dynamic compensation, orthogonality compensation and temperature compensation are included features. Sampling reaches up to 500 Hz, while the output interface listing covers RS232, RS485, TTL and Modbus, providing electrical and communication details relevant to host-system integration.
Physical integration is defined by two product forms: a packaged unit measuring L60 × W59 × H29 mm and a bare board measuring L44 × W35 × H11 mm. The bare board’s length and width may vary by ±1 mm, so its actual dimensions govern mechanical fit. Power requirements are 9–36 V DC at 30 mA operating current, with a 40 mA maximum. The operating temperature range is −40 to 85°C, and the storage range is −55 to 100°C.
Measurement limits are ±400°/sec for the gyroscope and ±3.6 g for each accelerometer axis. Gyroscope resolution is 0.01°/sec, with angular random walk below 0.1°/√h. Bias stability retains distinct temperature and averaging conditions: the gyroscope figures are below 30°/h at room temperature and below 20°/h across the full temperature range, both at 10 seconds and 1σ. Accelerometer bias stability at 25°C is 0.001 mg over 100 seconds or 0.01 mg over 10 seconds, both at 1σ.
Specifications
| Specification | Value & conditions |
|---|---|
| Product identity and type | BWSENSING BW-IMU127C Modbus inertial measurement unit |
| Compensation | Dynamic and orthogonality compensation |
| Sampling frequency | Up to 500 Hz |
| Output interfaces and protocol | RS232 / RS485 / TTL / Modbus output |
| Temperature compensation | Temperature compensation; temperature range −40°C to +85°C |
| Supply voltage | 9–36 V DC |
| Operating current | 30 mA; 40 mA maximum |
| Operating temperature | −40 to 85°C |
| Storage temperature | −55 to 100°C |
| Gyroscope resolution | 0.01°/sec |
| Gyroscope measurement range | ±400°/sec |
| Gyroscope room-temperature bias stability | Less than 30°/hRoom temperature; 10 s, 1σ. |
| Gyroscope full-temperature bias stability | Less than 20°/hFull temperature range; 10 s, 1σ. |
| Angular random walk coefficient | Less than 0.1°/√h |
| Accelerometer measurement range | ±3.6 gX, Y and Z axes. |
| Accelerometer resolution | 0.01 mg |
| Accelerometer bias stability at 100 seconds | 0.001 mg25°C; 100 s, 1σ. |
| Accelerometer bias stability at 10 seconds | 0.01 mg25°C; 10 s, 1σ. |
| Packaged dimensions | L60 × W59 × H29 mmPackaged product. |
| Bare-board dimensions | L44 × W35 × H11 mmBare-board product; length and width may vary by ±1 mm, with actual dimensions taking precedence. |
| Applications | Unmanned boats and underwater robots; construction machinery; platform stabilization; automated guided vehicles; heavy trucks; autonomous driving; robotics; unmanned aircraft |
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