Geomagnetic sensor DCM series

Product Description
DCM301B / DCM302B is a 3D electronic compass using a two-dimensional plane calibration algorithm that completes calibration by rotating the sensor plane in place. The device supports hard-iron and soft-iron calibration and can perform three-dimensional calibration to correct magnetic interference. It integrates three-axis magnetic sensing and a three-axis accelerometer for tilt compensation, enabling real-time heading calculation and accurate heading data at tilt angles up to ±85°. The unit is driven by a high-precision MCU and provides multiple output modes with standard interfaces including RS232, RS485 and TTL; other interfaces can be customized.

Scope of application

• Mining machinery and oil drilling equipment
• Equipment leveling and control systems
• Alignment and bending control
• Engineering and construction vehicle leveling
• High-altitude platform safety monitoring
• Shield pipe jacking applications
• Angle control in medical devices
• Attitude navigation for underground drilling rigs
• Orientation measurement based on inclination
• Tilt monitoring for geological equipment

Parameters
DCM301B / DCM302B - PARAMETER
Compass heading: Best heading accuracy: 0.5°
Compass heading: Resolution: 0.1°
Pitch accuracy: 0.1° <15° (measurement range); 0.2° <30°; 0.3° <60°; 0.3° <85°
Pitch range: ±85°
Roll accuracy: 0.1° <15°; 0.2° <30°; 0.3° <60°; 0.3° <85°
Roll range: ±85°
Tilt resolution: 0.1°
Best tilt compensation range: <40°
Calibration: Hard iron: Yes; Soft iron: Yes
Magnetic interference calibration method: Plane rotation in 1 circle (2D calibration)
Shell dimension: L60×W59×H33 mm
Weight: PCB 20 g; with shell 100 g
RS232/RS485/TTL connector: 5 PIN connector
Start delay: <50 ms
Maximum output rate: 20 Hz
Communication rate: 2400–19200 baud
Output format: Binary high-performance protocol
Power supply: Default DC +5V; optional DC 9–36V
Current (max): 40 mA; Idle: 30 mA; Sleep: TBD
Operating temperature: -40℃ to +85℃; Storage: -40℃ to +85℃
Shock resistance: 2500 g
EMC: According to EN61000 and GB/T17626
MTBF: ≥98000 hours
Insulation: ≥100 MΩ
Anti-shock: 100 g @11 ms / 3 axial directions (half-sine)
Anti-vibration: 10 grms / 10–1000 Hz

Dimensions

• Shell size: L60×W59×H33 mm
• Installation size: L50×49×5 mm
• Mounting screws: 4 × M4 screws

Technical specifications

• Model / Series: DCM series (DCM301B / DCM302B)
• Measurement ranges: Roll ±85°, Pitch ±85°, Azimuth 0–360°
• Heading accuracy: up to 0.5°; heading resolution: 0.1°
• Tilt compensation up to ±85° (best compensation <40°)
• Interfaces: RS232 / RS485 / TTL (5 PIN connector); binary high-performance protocol
• Baud rate: 2400–19200
• Power supply: Default DC +5V; optional DC 9–36V
• Current consumption: Max 40 mA; Idle 30 mA
• Operating temperature: -40℃ to +85℃
• Shock & vibration: Anti-shock 100 g @11 ms; anti-vibration 10 grms (10–1000 Hz)
• Physical size: L60×W59×H33 mm; weight: PCB 20 g; with shell 100 g