North-Seeking MEMS IMU

ER-MIMU-01
1. Size:70*65*45(with shell)/43.2*43.2*35.5 (without shell and baseboard);
2. OEM, modular design, strong applicability;
3. Can find north independently.

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Introduction

ER-MIMU-01 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-01 uses MEMS accelerometer and gyroscope with high quality and reliability, RS422 and external communication, default baud rate 921600 (customized). 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.

A simple operation is required to connect our products to your system and obtain IMU data without the 15-pin plug provided by our company. At the same time, the size and weight of our products can be significantly reduced by removing the base plate housing.

Features
Size:70*65*45(with shell)/43.2*43.2*35.5 (without shell and baseboard)
Weight:220(with shell) /100(without shell and baseboard)
OEM, modular design, strong applicability
-40~80°C temperature compensation
Can find north independently
Gyro bias instability: <0.01 deg/hr
Gyro bias stability (10s 1σ): <0.05 deg/hr
Gyro angular random walk: <0.0025 °/√h
Accelerometer bias repeatability: 100ug
Accelerometer bias stability (10s) (1σ): <50ug
Accelerometer class II non-linearity coefficient: <100ug/g²

Application
High-precision North Seeker
Direction pointing and tracking in satellite antenna, target tracking system
North seeking in logging tools/gyro tools
Pointing, steering and guiding in advanced mining/drilling equipment
Initial alignment in UAV launch systems
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	A	B	C	/
Range	50	100	200	deg/s
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 (1σ 25℃)	<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 Repeatability (1σ 25℃)	<0.1	<0.1	<0.1	deg/hr
Accelerometer performance
Range	30			g
Bias Stability (10s 1σ)	<50			ug
Bias Month Repeatability (1σ)	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 6V)	2			W
Communication interface	RS-422
Physical characteristics
Size	70×65×45(with shell)/43.2×43.2×35.5 (without shell and baseboard)			mm
Weight	≤220(withshell)/≤100(without shell and baseboard)			g