High Accuracy North-Seeking MEMS IMU
Introduction
Inertial Measurement Unit, referred to as IMU, is a device to measure the attitude angle (or angular velocity) and acceleration of the three axis of the object. Gyroscope and accelerometer are the core devices of inertial navigation system (INS). With the built-in accelerometer sensor and gyroscope, the IMU can measure the linear acceleration and rotation angular velocity from three directions and can obtain the attitude, velocity and displacement information of the carrier through the resolving.
ER-MIMU-05 uses MEMS accelerometer and gyroscope with high quality and reliability, RS422 and external communication, baud rate can be flexibly set between 9600~921600, through the communication protocol to set the user’s required communication baud rate. With X, Y, Z three-axis precision gyro, X, Y, Z three-axis accelerometer with high resolution, can be output by RS422 X, Y, Z three axis of gyroscope and accelerometer’s original hexadecimal complement data (including gyro hexadecimal complement the numerical temperature, angle, the accelerometer hexadecimal temperature, the acceleration hexadecimal complement number); It can also output float dimensionless values of the gyroscope and accelerometer processed by the underlying calculation.
Application areas
North seeking in logging tools/gyro tools
Pointing, steering and guiding in advanced mining/drilling equipment
Initial alignment in weapon/UAV launch systems
Direction pointing and tracking in satellite antenna, target tracking system
Guidance and navigation in navigation grade MEMS weapon system
Orientating and positioning in railway train system
Precision platform attitude measuring and controls
Precision attitude, position measuring in navigation grade MEMS IMU/INS
North finding and positioning in land surveying/land mobile mapping system
Petroleum exploration
Bridge, tall building, tower, dam monitoring
Rock and soil monitoring
Mining
Features
Volume: 44.84 mm×38.88 mm×21.39 mm;
5V power supply, low power consumption 1.0W;
Light weight: ≤60g;
Products include X, Y, Z three-axis MEMS gyro and X, Y, Z three-axis MEMS accelerometer;
RS422 bus communication, baud rate from 9600~921600 can be set.
Specifications
| Item | Parameter | Unit | |
| Gyro performance | |||
| Range | 100 | °/s | |
| Bandwidth (-3dB) | 12 | Hz | |
| Scale Factor at 25°C | 80000 | LSB/deg/s | |
| Scale Factor Repeatability (1σ) | <50 | ppm | |
| Scale Factor VS Temperature (1σ) | 300 | ppm | |
| Scale Factor Non-Linearity (1σ) | <200 | ppm | |
| Bias Instability | 0.02 | °/hr | |
| Bias stability (10s 1σ) | <0.1 | °/hr | |
| Angular Random Walk | <0.005 | °/ √h | |
| Bias error over temperature (1σ) | 3 | °/hr | |
| Bias temperature variations, calibrated (1σ) | <0.3 | °/hr | |
| Bias Repeatability (1σ) | <0.1 | °/hr | |
| Accelerometer performance | |||
| Range | 2-10 | 10-30 | g |
| Bandwidth | 100 | 100 | Hz |
| Bias Stability (1s) (1σ) | <20 | <30 | μg |
| Bias Repeatability | 100-300 | 200-500 | μg |
| Bias Temp Coefficient | <10 | <20 | μg/℃ |
| Bias Temp Hysteresis | <0.5 | <0.5 | mg |
| Factor Scale Non-linearity | <500 | <500 | ppm |
| Factor Scale Repeatability | <300 | <300 | ppm |
| Factor Scale Temp Coefficient | 10 | 10 | ppm/℃ |
| Class II Non-linearity Coefficient | <100 | <100 | μg/g² |
| Factor Scale | 4000000-800000 | 4000000-800000 | LSB/g |
| System Performance | |||
| Supply Voltage | 5V±0.25V | ||
| Supply Consumption | 1W | ||
| Interface | RS422 | ||
| Vibration | 6.06g (10~2000Hz) | ||
| Shock | 5000g, 0.1ms | ||
| Operate Temp | -40℃~+ 80℃ | ||
| Storage Temp | -55℃~+ 105℃ | ||
| Weight | ≤60g | ||
| Size | 44.84 mm×38.88 mm×21.39 mm | ||
Application Techniques
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