Lightweight attitude and heading reference system BDA450

Product Description
BDA450 is a Bluetooth-output dynamic attitude sensor designed for industrial and mobile platforms that require precise, real-time orientation data. The device integrates three-axis accelerometers, three-axis gyroscopes, temperature compensation and Kalman filtering to deliver stable roll, pitch and azimuth outputs as well as raw acceleration and gyro data. Bluetooth 5.1 (BLE) output with BLE DFU enables wireless data transmission and firmware updates. The unit supports solar or battery-assisted power and is housed in a PPS plastic shell with IP67 protection for demanding field environments.

Key features

• Low noise performance
• Bluetooth 5.1 wireless output (BLE) with DFU firmware upgrade
• Solar-assisted / long-life battery operation
• Real-time 3D dynamic attitude measurement
• Maximum update rate: 100 Hz
• High drift stability and temperature compensation

Scope of application

• Engineering vehicle leveling and control
• Bridge and dam monitoring
• Precision instrument leveling and control
• Medical device angle control
• Attitude/navigation for underground drilling rigs
• Railway track gauge and alignment measurement
• Inclination-based orientation measurement for machinery
• Geological equipment tilt and stability monitoring

Dimensions

• Shell size: L96 × W59.5 × H31 mm
• Installation size: L83 × W31 × H6 mm
• Mounting: 4 × M5 screws

Specifications (table)
Model: BDA450
Measure range: Roll ±180°, Pitch ±90°, Azimuth ±180° (initial value at power-on is 0°)
Measure axis: X / Y / Z
Roll & Pitch Static accuracy (@25℃): ±0.05°
Roll & Pitch Dynamic accuracy (rms @25℃): ±0.1°
Gyro range: ±300°/s
Gyro zero bias stability (10s smooth): 8.5°/h
Gyro angle random walk (Allan): 0.25°/sqrt(h)
Acceleration range: ±8 g
Acceleration bias stability (10s mean): 0.1 mg
Acceleration bias instability (Allan): 0.005 mg
Velocity random walk (Allan): 0.005 m/s/sqrt(h)
Zero-point temperature coefficient (-20~70℃): ±0.01°/℃
Sensitivity temperature coefficient (-20~70℃): ≤100 ppm/℃
Power-on startup time: ≤3.5 s
Response time: 0.01 s
Electromagnetic compatibility: According to EN61000 and GBT17626
Reception sensitivity: -96 dBm
Transmit power: 8 dBm
Bluetooth transmission distance: up to 50 m (open, unobstructed)
Bluetooth frequency band: 2405–2480 MHz (16 channels)
Usage time (battery fully charged): ~20 days (25℃, 8 h operation/day, 16 h sleep)
Insulation resistance: ≥100 MΩ
Impact resistance: 100 g @ 11 ms triaxial (half-sine)
Vibration resistance: 10 grms, 10–1000 Hz
Ingress protection: IP67
Housing material: PPS plastic
Weight: ≤230 g (excluding cable)

Technical specifications

• Model: BDA450
• Output: Bluetooth 5.1 (BLE), BLE DFU firmware upgrade
• Update rate: up to 100 Hz
• Measured axes: X/Y/Z — Roll/Pitch/Azimuth
• Static accuracy (Roll & Pitch @25℃): ±0.05°
• Dynamic accuracy (Roll & Pitch rms @25℃): ±0.1°
• Gyroscope: ±300°/s; zero bias stability: 8.5°/h; ARW: 0.25°/sqrt(h)
• Accelerometer: ±8 g; bias stability: 0.1 mg; bias instability: 0.005 mg
• Temperature coefficients: zero ±0.01°/℃; sensitivity ≤100 ppm/℃
• Bluetooth TX power: 8 dBm; RX sensitivity: -96 dBm; band: 2405–2480 MHz
• Bluetooth range: up to 50 m open; typical line-of-sight ~40 m in some environments
• Power-on time ≤3.5 s; response time 0.01 s; battery life ~20 days (typical)
• Ingress protection: IP67; insulation ≥100 MΩ
• Shock/vibration: 100 g @11 ms impact; 10 grms 10–1000 Hz vibration
• Housing: PPS plastic; Weight ≤230 g (excl. cable)
• Dimensions: Shell L96×W59.5×H31 mm; Installation L83×W31×H6 mm; Mounting 4×M5 screws