Miniaturized MEMS IMU

ER-MIMU-11
1. Mini diameter: 120mm x Φ30mm;
2. Light weight: ≤150g;
3. Temperature compensation: -40℃~ + 80℃.

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Introduction

Miniaturized MEMS IMU

Introduction
The product is mainly composed of three-axis MEMS accelerometer and gyroscope. The working principle is as follows: the gyroscope and accelerometer data are collected by ARM microcontroller, three high-precision gyroscopes are collected by 1-channel digital interface SPI, and three accelerometers are collected by another 1-channel digital interface SPI. All sensors are calibrated and compensated in software after acquisition.

Features
Mini diameter:120mm x Φ30mm
Light weight: ≤150g
Temperature compensation: -40℃~ + 80℃
Products with wide voltage design: 6v~12v
Gyro bias instability: <0.3deg/hr
Gyro bias stability (10s 1σ): <3deg/hr
Gyro angular random walk: <0.125°/ √h
Accelerometer bias repeatability: 100ug
Accelerometer bias stability (10s 1σ): <50ug
Accelerometer class II non-linearity coefficient: <100ug/g2
6V power supply, low power consumption 2W
RS422 bus communication, baud rate from 230400~921600 can be set

Application
Azimuth, attitude, position measuring and keeping in GNSS-assisted INS
Heading, pitch, roll measuring in AHRS for UAV
Motion survey and keeping in MRU
Attitude & azimuth keeping, positioning in IMU
Stabilizing & Pointing in satellite antenna, target tracking system
Robotic Control & Orientation in autonomous machines
Unmanned vehicles

Specifications

Item	Parameter	A	B	C	Unit
Gyro performance
Range		400	400	400	deg/s
Scale Factor at 25°C		16000	20000	20000	LSB/deg/s
Scale Factor Repeatability (1σ)		<50	<100	<50	ppm
Scale Factor VS Temperature (1σ)		±300	±500	±500	ppm
Scale Factor Non-Linearity (1σ)		<300	<300	<300	ppm
Bias Instability(1σ 25℃)		<0.3	<0.3	<0.1	deg/hr
Bias stability (10s 1σ)		<3	<2	<1	deg/hr
Angular Random Walk		<0.125	<0.125	<0.05	°/ √h
Bias Repeatability(1σ 25℃)		<3	<2	<1	deg/hr
Accelerometer performance
Range		30			g
Bias Stability (10s 1σ)		<50			ug
Bias Repeatability		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 6)		2			W
Communication interface		RS-422
Physical characteristics
Size		120 x Φ30			mm
Weight		≤150			g