High Performance MEMS IMU

ER-MIMU-M02
1. Small size: 47×44×14mm;
2. High reliability and strong environmental adaptability.
3. Light weight: 50g.

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Introduction

ER-MIMU-M02 High Performance MEMS IMU

Introduction
ER-MIMU-M02 is an inertial measurement unit (IMU) based on micromechanical technology (MEMS), including a built-in MEMS gyroscope with 2°/h (Allan) bias instability and a MEMS accelerometer with 24μg (Allan) bias instability. It is used to measure the three-axis angular rate and three-axis acceleration of the carrier. Through the communication protocol, the gyroscope and accelerometer data with error compensation (including temperature compensation, installation misalignment angle compensation, nonlinear compensation, etc.) can be solved to obtain the carrier attitude, velocity, displacement and other information. It also has a built-in three-axis magnetic sensor and air pressure sensor. The magnetometer helps with orientation and can be used to calibrate the data and orient it to the correct position. The product has high reliability and strong environmental adaptability.

Features
Three-axis digital gyroscope:
Dynamic measurement range ±450º/s;
Bias instability: 2 º/h (Allan variance);
Angular random walk: 0.08º/√h.
Three-axis digital accelerometer:
Dynamic measurement range: 16g;
Bias instability: 24μg (Allan variance);
Speed Random Walk: 0.02m/s√h;
High reliability: mean time between failures >20000h;
Ensure accuracy over the full temperature range (-40°C~80°C): Built-in high-performance temperature calibration and compensation algorithm;
Communication interface: 1 SPI, slave mode

Application
Space-based fields: unmanned aerial vehicles, aerial photography, agricultural plant protection, photoelectric detection stability;
Land-based fields: vehicle navigation, vehicle satellite communications, forest and land monitoring, high-speed railway track inspection;
Sea-based fields: 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 instability	Allan variance		2		º/h
Random Walk			0.08		º/√h
Bias Repeatability	1 σ		36		º/h
Full temperature bias	1 σ, -40~80℃		360		º/h
Scale factor			66×(2^16)		LSB/(º/s)
Scale factor non-linearity	1 σ		0.05		%FS
Bandwidth (3dB)				472	Hz
Accelerometer
Measuring range			±16		g
Bias instability	Allan variance		24		μg
Random Walk			0.02		m/s/√h
Bias Repeatability	1 σ		3		mg
Full temperature bias	1 σ, -40~80℃		3		mg
Scale factor			2×(2^16)		LSB/mg
Scale factor non-linearity	1σ, < 1g		0.1		%FS
Bandwidth (3dB)				333	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		3	3.3	3.6	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			3g, 10~2000Hz
Impact			30g, 11ms
Mean time between failures			20000		h
Reliability
Continuous working hours			120		h