High Accuracy North-Seeking MEMS IMU

ER-MIMU-05
1. Measuring range: 100deg/s;
2. Gyro bias instability: <0.02deg/hr;
3. Gyro bias stability (10s 1σ): <0.1deg/hr;
4. Gyro angular random walk: <0.005°/√h.

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Introduction

ER-MIMU-05 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 230400~921600, 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.

Features
Light weight
Range can be selected
Weight: ≤70g
Operate Temp: -40℃~ + 80℃
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
North seeking in logging tools/gyro tools
Pointing, steering and guiding in advanced mining/drilling equipment
Initial alignment in UAV launch system
Direction pointing and tracking in satellite antenna, target tracking system
Guidance and navigation in navigation grade MEMS 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

Specifications

Item	Parameter			Unit
Gyro performance	ER-MIMU-05A	ER-MIMU-05B	ER-MIMU-05C	/
Range	50	100	200	deg/s
Bandwidth (-3dB)	12	12	50	Hz
Scale Factor at 25°C	160000	80000	40000	LSB/deg/s
Scale Factor Repeatability (1σ)	<50	<50	<100	ppm
Scale Factor VS Temperature (1σ)	300	300	300	ppm
Scale Factor Non-Linearity (1σ)	<200	<200	<300	ppm
Bias Instability	<0.01	<0.02	<0.02	deg/hr
Bias stability (10s 1σ)	<0.05	<0.1	<0.1	deg/hr
Angular Random Walk	<0.0025	<0.005	<0.005	°/√h
Bias error over temperature (1σ)	3	3	5	deg/hr
Bias temperature variations, calibrated (1σ)	<0.1	<0.3	<0.5	deg/hr
Bias Repeatability (1σ)	<0.1	<0.1	<0.1	deg/hr
Accelerometer performance
Range	30			g
Bandwidth	100			Hz
Bias Stability (1s)(1σ)	<30			ug
Bias Repeatability	200-500			ug
Bias Temp Coefficient	<20			ug/℃
Bias Temp Hysteresis	<0.5			mg
Scale Factor Non-linearity	<500			ppm
Scale Factor Repeatability	<300			ppm
Scale Factor Temp Coefficient	10			ppm/℃
Class II Non-linearity Coefficient	<100			ug/g2
Scale Factor	400000-800000			μg/LSB
System Performance
Supply Voltage	6~12V
Supply Consumption	2W
Interface	RS422
Vibration	6.06g (10~2000Hz)
Shock	5000g, 0.1ms
Operate Temp	-40℃~ + 80℃
Storage Temp	-55℃~ + 105℃
Weight	≤70g
Size	38.6mm x 44.8mm x25.5mm