Product overview
The Beiwei Sensing BW-AH327 provides attitude and heading reference functions for applications including UAVs, unmanned vehicles, platform stabilization and robot control. Its sensing specifications cover gyroscope and accelerometer performance, alongside roll, pitch and heading measurements. The unit measures 60 × 59 × 29 mm, defining its physical integration envelope. Electrical integration uses a 9–36 V DC supply, with operating current specified as 30 mA and a maximum of 40 mA. Output interface options are RS232, RS485 or TTL using Modbus.
Heading accuracy is 0.5°, while roll and pitch accuracy is 0.3°. The attitude measurement envelope extends to ±90º in pitch and ±180º in roll. Maximum output frequency is 500 Hz; the gyroscope has a separately specified 100 Hz bandwidth and ±400°/sec range. Temperature compensation accompanies the -40°C to +85°C temperature range. Shock resistance is specified at 2000 g for 0.5 ms, three times per axis. Accelerometer bias stability depends on the stated measurement interval: 0.001 mg at 100 seconds and 0.01 mg at 10 seconds, both at 25°C and 1σ.
Specifications
| Specification | Value & conditions |
|---|---|
| Product | BW-AH327 Modbus attitude and heading reference system |
| Roll and pitch accuracy | 0.3° |
| Heading accuracy | 0.5° |
| Tilt range | Pitch ±90º; roll ±180º |
| Dimensions | L60 × W59 × H29 mm |
| Communications | RS232, RS485 or TTL; Modbus protocolSelectable output interface. |
| Temperature range | -40°C to +85°CTemperature 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. |
| Gyroscope resolution | 0.01°/sec |
| Gyroscope range | ±400°/sec |
| Gyroscope bias stability | 15°/hFull temperature range; 10 s, 1σ. |
| Gyroscope angle 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 range | ±3.6 gX, Y and Z axes. |
| 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. |
| Applications | Satellite tracking; unmanned vehicles; platform stabilization; underwater robot navigation; drilling equipment measurement and control; marine surveying instruments; robot control; UAVs |
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