Product overview
The BWSENSING BW-AH227 is a low-cost attitude and heading reference system for unmanned aircraft, unmanned vehicles, platform stabilization and robotic equipment. Its compact body measures L60 × W59 × H29 mm, with a weight of 280g including the cable. Output options are RS232, RS485 or TTL with Modbus protocol. The unit provides roll, pitch and heading measurements, with gyroscope and three-axis accelerometer specifications. Other applications include satellite tracking, underwater robot navigation, drilling equipment measurement and control, and marine surveying instruments.
Roll and pitch accuracy is 0.5°, and heading accuracy is 0.8°. Tilt coverage extends to ±90° in pitch and ±180° in roll. The gyroscope has a ±400°/sec range and 200Hz bandwidth; accelerometer range is ±3.6 g on each axis. The temperature range is -40°C to +85°C with temperature compensation. Shock resistance is 2000g for 0.5ms, three shocks per axis. Accelerometer bias stability is 0.001mg over 100s and 0.01mg over 10s, both at 25°C and 1σ.
Specifications
| Specification | Value & conditions |
|---|---|
| Product identity and type | BWSENSING BW-AH227 low-cost attitude and heading reference system with Modbus protocol |
| Roll and pitch accuracy | 0.5° |
| Heading accuracy | 0.8° |
| Tilt range | Pitch ±90°; roll ±180° |
| Dimensions | L60 × W59 × H29 mm |
| Output interfaces and protocol | RS232, RS485 or TTL; Modbus protocolSelectable output interface. |
| Temperature range | -40°C to +85°CTemperature compensation. |
| Mean time between failures | ≥90000 hours |
| Electromagnetic compatibility | According to GBT17626 |
| Insulation resistance | ≥100 MΩ |
| Shock resistance | 2000g0.5 ms; 3 shocks per axis. |
| Weight | 280gIncluding cable. |
| Gyroscope resolution | 0.01°/sec |
| Gyroscope measurement range | ±400°/sec |
| Gyroscope bias stability | 20 °/hFull temperature range; 10s, 1σ. |
| Gyroscope angle random walk coefficient | Less than 0.1 °/√h |
| Gyroscope scale factor nonlinearity | ≤100ppm1σ. |
| Gyroscope scale factor repeatability | ≤100ppm1σ. |
| Gyroscope bandwidth | 200Hz |
| Accelerometer measurement range | ±3.6 gX, Y and Z axes. |
| Accelerometer bias stability at 100s | 0.001mg25°C, 100s, 1σ. |
| Accelerometer bias stability at 10s | 0.01mg25°C, 10s, 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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