Document:
Liocrebif's LKF-SX-MG302KNS MEMS north finder is a highly reliable, cost-effective six-axis MEMS inertial unit integrating high-performance three-axis gyroscopes and accelerometers to measure angular and linear motion. Full-temperature bias, scale factor, non-orthogonality, and acceleration-related compensation—combined with high-speed sampling and fine static/dynamic correction—maintains high measurement accuracy over extended operation. Vibration-isolated and sealed, it operates stably in harsh environments, delivering a low-cost, high-reliability solution with customizable precision and flexible hardware/software configurations for inertial navigation, attitude stabilization, and measurement applications.
| MEMS Gyroscope | |
|---|---|
| Range (°/s) | ±200 |
| Bias (°/h, 1σ) | ≤0.1 |
| Bias Stability (°/h, 10s avg.) | ≤0.1 |
| Bias Instability (°/h, Allan) | ≤0.02 |
| Bias Repeatability (°/h) | ≤0.1 |
| Angular Random Walk (°/√h) | ≤0.01 |
| Scale Factor Nonlinearity (ppm) | ≤100 |
| Cross-Axis Coupling (rad) | ≤0.001 |
| Bandwidth (Hz) | ≥50 |
| MEMS Accelerometer | |
|---|---|
| Range (g) | ±20 |
| Bias (mg, 1σ) | ≤0.5 |
| Bias Stability (µg, 10s avg.) | ≤50 |
| Bias Stability (µg, Allan) | ≤30 |
| Bias Repeatability (µg) | ≤50 |
| Velocity Random Walk (mm/s/√h) | ≤30 |
| Scale Factor Nonlinearity (ppm) | ≤500 |
| Cross-Axis Coupling (rad) | ≤0.001 |
| Bandwidth (Hz) | ≥50 |
| Navigation Accuracy | |
|---|---|
| North-Finding Accuracy (°, 1σ) | 0.5 sec L (L denotes latitude) |
| Horizontal Attitude Alignment Accuracy (°, 1σ) | 0.15 |
| Heading Holding Accuracy (°, 1σ) | 0.5°*h |
| Horizontal Attitude Holding Accuracy (°, 1σ) | 0.2°*h |
| Attitude Tracking Measurement Accuracy (°, 1σ) | 0.1 |
| Electrical/Mechanical Interface | |
|---|---|
| Power Supply (V) | 5~12 |
| Power Consumption (W) | ≤1.5 |
| Startup Time (s) | ≤2 |
| Communication Interface | 2-channel RS-422, or 1-channel RS-422 + 1-channel sync output |
| Update Rate (Hz) | 200 |
| Dimensions (mm*mm*mm) | 47*47*35 |
| Weight (g) | <150 |
| Operating Environment | |
|---|---|
| Operating Temperature (°C) | -40 ~ +85 |
| Storage Temperature (°C) | -55 ~ +85 |
| Vibration (g, RMS) | 20~2000 Hz, 6.06 |
| Shock (g) | 1000g/1ms |
| MTBF (h) | 200000 |
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