North-Seeking MEMS IMU

ER-MIMU-01 (0.02 deg/hr)
1. 3 axis gyroscope & 3-axis accelerometer;
2. Size: 43.2mm×43.2 mm×35mm;
3. Gyro bias instability: 0.02 deg/hr.

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-01 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

Petroleum exploration;

Bridge, tall building, tower, dam monitoring

Rock and soil monitoring

Mining

Performance indicators

Item Parameter Unit
Gyro performance
Range 100 deg/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 deg/hr
Bias stability (10s 1σ) <0.1 deg/hr
Angular Random Walk <0.005 °/ √h
Bias error over temperature (1σ) 3 deg/Hr
Bias temperature variations, calibrated (1σ) <0.3 deg/Hr
Bias Repeatability (1σ) <0.1 deg/hr
Accelerometer performance
Range 2-10 10-30 g
Bandwidth 100 100 Hz
Bias Stability (1s) (1σ) <20 <30 ug
Bias Repeatability 100-300 200-500 ug
Bias Temp Coefficient <10 <20 ug/℃
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 ug/g2
Factor Scale 4000000-800000 4000000-800000 Lsb/g
System Performance
Supply Voltage 5v
Supply Consumption 1w
Interface RS422
Vibration 6.06g (10~2000Hz)
Shock 5000g, 0.1ms
Operate Temp -45℃~+ 85℃
Storage Temp -55℃~+ 105℃
Weight ≤70g
Size 43.2mm×43.2 mm×35mm