High-Performance Attitude Reference System AHRS

ER-AHRS-5
1.High performance MEMS gyroscope with gyroscope bias instability <3°/h.
2.Built-in ultra-low-power, high-performance three-axis digital magnetic sensor with a dynamic field range of ±50 gauss.
3.A new generation of high-resolution altimeter sensors including a high linear pressure sensor and an ultra-low power 24-bit ADC with a height resolution of 10 cm.

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Introduction

High-Performance Attitude Reference System AHRS

Introduction
ER-AHRS-5 is a highly reliable and high-performance 10-axis attitude reference system. The sensing system integrates industrial-grade MEMS three-axis gyroscope, three-axis accelerometer, three-axis magnetometer, barometer, excellent filtering and data fusion algorithms. In addition, after calibrating all sensors and configuring special dynamic compensation algorithms, ER-AHRS-5 ensures the provision of accurate attitude data and inertial data under harsh conditions.

ER-AHRS-5 provides industrial standard communication interfaces with multiple optional configurations and a wide input voltage range, which can be easily integrated into various systems. Meanwhile, it features small size, low power consumption and high precision. It is an ideal choice for attitude measurement and navigation in most marine, UAV and vehicle fields.

Feature
1.High performance MEMS gyroscope with gyroscope bias instability <3°/h.
2.Built-in ultra-low-power, high-performance three-axis digital magnetic sensor with a dynamic field range of ±50 gauss.
3.A new generation of high-resolution altimeter sensors including a high linear pressure sensor and an ultra-low power 24-bit ADC with a height resolution of 10 cm.
4.A variety of data interfaces, easier to install and use, optional configuration RS422/RS232 and CAN.
5.Precision aluminum alloy shell, high reliability, can be widely used in land, aviation, robot control.

Application
Land, sea, drones, robot control and positioning, ships, vehicles, human motion detection, etc.

Product model information

Item	ER-AHRS-5
Angular velocity, acceleration	√
Attitude angle	√
Relative heading angle	√
Absolute heading angle	√

Technical specification

Attitude orientation performance
Pitch angle and roll angle accuracy	0.3°
Absolute heading accuracy	<0.5°
(Roll angle/pitch angle) static drift	0.5°/10min
(Pitch angle/roll angle) measuring range	±85°

Sensor parameters

Gyroscope
Item	Value						Unit
Range	±125,±500,±1000,±2000						deg/s
Random walk	≤0.21						°/ √h
Bias instability	≤3						°/h
Temperature coefficient of angular rate sensitivity	±70						ppm/°C
Rate noise density	5						mdps/√Hz
Bandwidth	>100						Hz
Accelerometer
Item	Value						Unit
Range	±2,±4,±8,±16						g
Linear acceleration sensitivity temperature coefficient	±100						ppm/°C
Bias	0.1						mg
Bias temperature coefficient	±0.10						mg/°C
Acceleration noise density	60						μg/√Hz
Bandwidth	>100						Hz
Barometer
Item	Value						Unit
Range	10~1200						mbar
Precision(25℃,750mbar)	±1.5						mbar
Error band,-20℃~+85℃,450~1100mabr	±2.5						mbar
Operating temperature	-40~+85						℃
Long-term stability	±1						mbar/year
Magnetometer
Parameter		Period				Unit
		50	100		200
Measurement range		-800~+800				μT
Gain parameter		20	38	75		LSB/μT
Sensitivity		50	26	13		nT
Noise		30	20	15		nT
Noise density at maximum single-axis sampling rate		1.2				nT/√Hz
Repeatability within 200μT		15	8	8		nT
Operating temperature range		-40~+85				°C
Power supply and interface
Supply voltage	5~12V
Power consumption	≤0.5W
Interface protocol	RS422 or RS232, CAN
Operating temperature	-40℃~+80℃
Size	40mm40mm24mm
Output data rate	200HZ