Low Cost Inertial Measurement Unit

ER-MIMU-M02A :
1.Gyro dynamic measurement range: ±450º/s;
2.Gyro bias instability: 0.3 º/h (Allen variance);
3.Gyro angle random walk: 0.15º/√h.
4.Accelerometer bias stability: 2ug (Allen variance)

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Introduction

ER-MIMU-M02A Low Cost Inertial Measurement Unit

Introduction
ER-MIMU-M02A is an inertial measurement unit (IMU) based on micro-mechanical technology (MEMS). It is a complete inertial system with a built-in three-axis gyroscope and a three-axis accelerometer to measure the three-axis angular parameters of the carrier, such as speed, acceleration, etc. The output data after error compensation (including temperature compensation, installation misalignment angle compensation, nonlinear compensation, etc.) can be solved to obtain information such as carrier attitude, speed, displacement, etc. It also has a built-in three-axis magnetic sensor and air pressure sensor.

Features
Three-axis digital gyroscope:
Dynamic measurement range: ±450º/s;
Bias instability: 0.3 º/h (Allen variance);
Angle random walk: 0.15º/√h.
Three-axis digital accelerometer:
Dynamic measurement range: ±20g;
Bias stability: 2ug (Allen variance);
Angular Random Walk: 0.005m/s√h;
Ensure accuracy over the full temperature range (-40°C~80°C): Built-in high-performance temperature calibration and compensation algorithm;
Communication interface: 1 SPI

Application
unmanned aerial vehicles, aerial photography, agricultural plant protection, photoelectric detection stability;vehicle navigation, vehicle satellite communications, forest and land monitoring, high-speed railway track inspection; hydrological Measurement, waterway detection, shipboard positioning communication, unmanned surface vehicle.

Specifications

Parameter	Test condition	Min value	Typical value	Max value	Unit
Gyroscope
Measuring range			±450		º/s
Bias stability	1s smoothing, rms		10		º/h
Bias instability	Allan variance		0.3		º/h
Random Walk	1б		0.15		º/√h
Bias Repeatability	1б		10		º/h
Full temperature bias	-40 ~ 80 °C, 10s smoothing		0.01		º/s
Scale factor non-linearity	FS=450 º/s		0.03		%FS
Bandwidth（3dB）			250		Hz
Accelerometer
Measuring range			±20		g
Bias stability	Allan variance		2		mg
Random Walk	1б		0.005		m/s/√h
Bias Repeatability	1 σ		5		mg
Full temperature bias	-40 ~ 80 °C, 10s smoothing		5		mg
Scale factor non-linearity	FS=8g		0.1		%FS
Bandwidth			250		Hz
Magnetometer
Dynamic measurement range		±2.5			Gauss
Resolution			120		uGauss
Noise Density			50		uGauss
Bandwidth			200		Hz
Barometer
Pressure range		450		1100	mbar
Overall error			6
Resolution			0.1		mbar
Absolute measurement accuracy			1.5		mbar
Long-term stability			±1		mbar/yr
Communication Interface
1 way SPI	Baud rate			15	MHz
Electrical specification
Voltage		2.5	3.3	12	V
Power dissipation				1.5	W
Ripple wave	P-P			100	mV
Structural characteristics
Dimension	47×44×14mm
Weight			50		g
Operating environment
Operating temperature		-40		80	℃
Storage temperature		-45		85	℃
Vibration			6.06g，10~2000Hzs
Impact			2000g，0.1ms