GMU761 Inertial Measurement Sensor Module | MEMS 9-Axis IMU AHRS Module

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GMU761

Inertial Measurement Sensor Module

IMU/VRU/AHRS functionality
High dynamic attitude calculation
TTL output
3.3VDC power supply
Flexible communication and configuration

Product manual

Product Introduction

GMU761 is an inertial measurement module independently developed based on MEMS technology, integrating IMU (Inertial Measurement Unit), VRU (Vertical Reference Unit), and AHRS (Attitude and Heading Reference System) functions into one. The module adopts the adaptive extended Kalman filter algorithm, combined with IMU noise dynamic analysis and carrier motion state recognition technology, which can achieve high-precision attitude output in high dynamic environments and effectively suppress heading angle drift. Each module has undergone comprehensive error compensation before leaving the factory, covering multiple calibrations such as temperature impact, zero offset, scale factor and cross axis error, to ensure its stability and reliability under various complex working conditions.

GMU761 supports UART and CAN interface communication, and provides flexible user configuration options. If using the CAN interface, users need to integrate the CAN transceiver circuit externally. This module is designed specifically for industrial application scenarios that require high reliability and environmental adaptability.

Performance Parameters

GMU761			condition	parameter
Attitude angle	Roll angle	Accuracy	1σ RMS	0.15°
		Range	-	±180°
	Pitch angle	Accuracy	1σ RMS	0.15°
		Range	-	±90°
	No reference heading angle	Accuracy	1σ RMS	0.2°
		Range	-	±180°
	Magnetic reference heading angle	Accuracy	1σ RMS	2.5°
		Range	-	±180°
	Angular resolution		-	0.001°
Gyroscope	Range		-	±2000°/s
	Nonlinearity		-	±0.05%FS
	Noise density		-	0.015°/s/√Hz
	Zero bias instability		@25℃,ALLAN variance,1σ	3°/hr
	Bandwidth (-3dB)		-	50Hz
	Zero offset		1σ RMS	±0.5°/s
	Zero temp.drift		1σ RMS, -40~85°C	±1°/s
Accelerometer	Range		-	±16g
	Nonlinearity		-	±0.1%FS
	Noise density		-	100ug/√Hz
	Zero bias instability		@25,ALLAN variance,1σ	0.03mg
	Bandwidth (-3dB)			50Hz
	Zero offset		1σ RMS	±20mg
	Zero temp.drift		1σ RMS, -40~85°C	±10mg
Magnetic sensor	Range			±30Gauss
	Nonlinearity		FS = ±32G	±0.5%FS
	Resolution		LBS	1mG
	Noise		RMS	2mGauss
electrical connection	Input voltage		-	2.8-5.5VDC
	Power consumption		-	<160mW
	Communication Interface		-	UART
	Output frequency		Up to 1KHz	1-1KHz
Environmental indicators	Operating Temp.		-	-40~85°C
	Storage temp.		Relative humidity ≤ 65%	-45~85°C
	Impact resistance		-	500g
	Size		-	12.1X12.1x3.2mm
	Weight		-	≤5g

Product Dimensions