Product overview
The BWSENSING BW-AH327 provides attitude and heading reference functions for integration into unmanned aircraft, robotic systems and stabilized platforms. Its compact body measures 60 × 59 × 29 mm, defining the physical space needed for installation. The electrical configuration offers selectable RS232, RS485 or TTL output with Modbus communication. It accepts 9–36 V DC and draws 30 mA operating current, with a stated maximum of 40 mA. These interface options support selection around the host system’s electrical requirements.
Heading accuracy is 0.5°, while roll and pitch accuracy is 0.3°, with measurement ranges of ±180° roll and ±90° pitch. The gyroscope measures up to ±400°/sec and has 100 Hz bandwidth; maximum system output frequency is 500 Hz. The accelerometer covers ±3.6 g on each axis. Temperature compensation accompanies a -40°C to +85°C temperature range. Shock resistance is specified as 2000 g for 0.5 ms, three times per axis, preserving the duration and repetition limits of that rating.
Specifications
| Specification | Value & conditions |
|---|---|
| Product type | BW-AH327 Modbus attitude and heading reference system |
| Dimensions | L60 × W59 × H29 mm |
| Output interface options | Selectable RS232, RS485 or TTL output; Modbus protocol |
| Temperature range and compensation | -40°C to +85°C; temperature compensation |
| Supply voltage | 9–36 V DC |
| Operating current | 30 mA; 40 mA maximum |
| Maximum output frequency | 500 Hz |
| Shock resistance | 2000 g0.5 ms; three shocks per axis. |
| Roll and pitch accuracy | 0.3° |
| Heading accuracy | 0.5° |
| Tilt range | Pitch ±90°; roll ±180° |
| Gyroscope resolution | 0.01°/sec |
| Gyroscope measurement range | ±400°/sec |
| Gyroscope bias stability | 15°/hFull temperature range; 10 s, 1σ. |
| Gyroscope angular random walk coefficient | Less than 0.1 °/√h |
| Gyroscope scale factor nonlinearity | ≤100 ppm1σ. |
| Gyroscope scale factor repeatability | ≤100 ppm1σ. |
| Gyroscope bandwidth | 100 Hz |
| Accelerometer measurement range | ±3.6 gX, Y and Z axes. |
| 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. |
| Applications | Satellite tracking; unmanned vehicles; platform stabilization; underwater robot navigation; drilling equipment measurement and control; marine surveying instruments; robot control; unmanned aircraft |
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