North Seeking MEMS Inertial Measurement Unit
Introduction
IMU (Inertial Measurement Unit, Short for IMU) is a device that measures the three-axis attitude angle (or angular velocity) and acceleration of an object. Gyroscope and accelerometer are the core equipment of inertial navigation system (INS).Through the built-in accelerometer and gyroscope, the IMU can measure the linear acceleration and rotational angular velocity from three directions, and obtain the attitude, velocity and displacement information of the carrier through analysis.
The ER-MIMU-181 uses high-quality, highly reliable MEMS accelerometers and gyroscopes. It features high-precision gyroscopes in X, Y, and Z axes, and high-precision accelerometers in X, Y, and Z axes.
Feature
Size:65*51*35.5
Weight: 140g
-40~80°C temperature compensation
Can find north independently
Gyro bias instability: <0.01 deg/hr
Gyro bias stability (10s 1σ): <0.05 deg/hr
Gyro angular random walk: <0.0025 °/√h
Accelerometer bias repeatability: 100ug
Accelerometer bias stability (10s) (1σ): <50ug
Accelerometer class II non-linearity coefficient: <100ug/g²
Application
High precision north finder
Direction pointing and tracking in satellite antennas and target tracking systems
North seeking in logging tools/gyro tools
Pointing, steering and guidance in advanced mining/drilling equipment
Initial alignment in a drone launch system
Precision platform attitude measurement and control
Accurate attitude and position measurement for navigation-grade MEMS IMU/INS
North finding and positioning in Land surveying/Land moving mapping systems
Specification
Item | Parameter | Unit | ||
Gyro performance | A | B | C | / |
Range | 50 | 100 | 200 | deg/s |
Scale Factor at 25°C | 160000 | 80000 | 40000 | LSB/deg/s |
Scale Factor Repeatability (1σ) | <50 | <50 | <100 | ppm |
Scale Factor VS Temperature (1σ) | 300 | 300 | 300 | ppm |
Scale Factor Non-Linearity (1σ) | <200 | <200 | <300 | ppm |
Bias Instability (1σ 25℃) | <0.01 | <0.02 | <0.02 | deg/hr |
Bias stability (10s 1σ) | <0.05 | <0.1 | <0.1 | deg/hr |
Angular Random Walk | <0.0025 | <0.005 | <0.005 | °/√h |
Bias Repeatability (1σ 25℃) | <0.1 | <0.1 | <0.1 | deg/hr |
Accelerometer performance | ||||
Range | 30 | g | ||
Bias Stability (10s 1σ) | <50 | ug | ||
Bias Month Repeatability(1σ) | 100 | ug | ||
Bias Temp Coefficient | <20 | ug/℃ | ||
Bias Temp Hysteresis | <1.5 | mg | ||
Scale Factor Non-linearity | <500 | ppm | ||
Scale Factor Month Repeatability | <30 | ppm | ||
Scale Factor Temp Coefficient | 10 | ppm/℃ | ||
Class II Non-linearity Coefficient | <100 | ug/g² | ||
Scale Factor | 250000 | Lsb/g | ||
Environment and power | ||||
Operate temperature | -40~+80 | ℃ | ||
Storage temperature | -55~+105 | ℃ | ||
Power supply | 6~12V DC | V | ||
Power (power supply 6V) | 2 | W | ||
Communication interface | RS-422 | |||
Physical characteristics | ||||
Size | 65*51*35.5 | mm | ||
Weight | 140 | g |
Dimension
Application Techniques
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