Product overview
The BW-MINS127 from Wuxi Beiwei Sensing Technology is a low-cost micro inertial navigation system intended for applications including unmanned aircraft, robots, platform stabilization, unmanned boats and underwater vehicles. Its sensing architecture includes gyroscope and accelerometer functions, supported by Kalman filtering and a dedicated bias-tracking algorithm for drift elimination. Attitude specifications distinguish 1° dynamic accuracy from 0.01° static accuracy, with pitch coverage of ±90º and roll coverage of ±180º. Heading retention accuracy is specified as 0.5°/60s.
The packaged unit measures 60 × 59 × 29 mm and weighs 280 g including its cable, providing concrete space and mass requirements for integration. It accepts 9–36 V DC and offers selectable RS232, RS485, TTL and Modbus output options. Temperature compensation accompanies a −40°C to +85°C temperature range. Integration must also account for the accelerometer’s ±1.8 g range on each axis and the separately specified shock resistance of 2000g for 0.5 ms, three times per axis.
Specifications
| Specification | Value & conditions |
|---|---|
| Manufacturer | Wuxi Beiwei Sensing Technology |
| Model and product type | BW-MINS127 low-cost micro inertial navigation system with Modbus protocol |
| Dynamic attitude accuracy | 1° |
| Static attitude accuracy | 0.01° |
| Attitude measurement range | Pitch ±90º; roll ±180º |
| Heading retention accuracy | 0.5°/60s |
| Gyroscope resolution | 0.01°/sec |
| Gyroscope bias stability over temperature | 30°/h10s, 1σ; full temperature range. |
| Gyroscope angular random walk coefficient | Less than 0.1 °/√h |
| Gyroscope bias repeatability | Less than 50 °/h1σ. |
| Accelerometer range | ±1.8 gX, Y and Z axes. |
| Accelerometer bias stability at 100s | 0.001 mg25°C, 100s, 1σ. |
| Accelerometer bias stability at 10s | 0.01 mg25°C, 10s, 1σ. |
| Mean time between failures | ≥90,000 hours |
| Shock resistance | 2000g0.5 ms; 3 shocks per axis. |
| Weight | 280 gIncluding cable. |
| Dimensions | L60 × W59 × H29 mmPackaged product. |
| Supply voltage | 9–36 V DCDC supply. |
| Temperature range and compensation | −40°C to +85°C; temperature compensation |
| Interfaces and protocol | RS232 / RS485 / TTL / ModbusSelectable output options. |
| Bias tracking | Special bias-tracking algorithm for drift elimination |
| Filtering | High-performance Kalman filtering algorithm |
| Application areas | Unmanned boats and underwater vehicles; robots; platform stabilization; large vessels; automated guided vehicles; automated and unmanned driving; special-purpose vehicles; unmanned aircraft |
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