GDM355 / GDM365 Dynamic 3D Electronic Compass Sensor For Antenna Servo Control

The GDM355/GDM365 is a three-dimensional dynamic electronic compass integrating a 12-axis inertial measurement unit, encompassing three-axis attitude angle measurement, three-axis accelerometer, three-axis gyroscope, and three-axis magnetometer. Utilizing the high dynamic angle response of the gyroscope and the stable attitude output capability of the accelerometer under static conditions, combined with dynamic inertial navigation algorithms, it can calculate the pitch and roll angles in real time during complex attitude changes. For geomagnetic azimuth, the product incorporates hard and soft magnetic calibration algorithms to effectively suppress geomagnetic interference in environments with magnetic field disturbances. The central processing unit calculates the heading in real time and uses dynamic pitch and roll angles to perform dynamic heading compensation for a wide range of magnetic azimuth, ensuring reliable heading output even at tilt angles of ±85°. The compass is equipped with a high-performance DSP processor, supporting standard interfaces such as RS232, RS485, and TTL, and other interfaces can be customized upon request.

The GDM355/GDM365 features a compact size and low power consumption, making it suitable for applications with high vibration tolerance, such as marine vessels and antenna satellite search. It can also operate stably under harsh environmental conditions, making it suitable for various systems that require high precision in measurement, integration, and control.

Technical Characteristics

❖ Tilt resolution: 0.1°

❖ Static tilt accuracy: 0.2°, dynamic accuracy: 0.5°

❖ DC 5V power supply

❖ Standard RS232/RS485/TTL output interface

❖ With hard magnet, soft magnet and tilt compensation

Application Field

❖ Marine Navigation and Surveying ❖ GPS Integrated Navigation System

❖ Antenna Servo Control ❖ Infrared Imager Integration

❖ Laser Ranging Equipment Collaboration ❖ Map Completion System Support

❖ ROV Underwater Robot Navigation ❖ Marine Survey Instrument Support

❖ Remote Intelligent Systems

Specifications

PIN Definition

Product Dimensions

PCBA Dimensions: L33×W27×H9mm

Mounting Dimensions: L28.5×W22.6×H2mm

Recommended Screws: 4 M3 screws(copper screws)

Shenzhen Ruicom Technology Limited is a professional high-tech enterprise specializing in the research, development, and production of inertial sensing products. With a strong focus on sensing technology and industrial applications, we provide reliable and high-precision sensing solutions for customers in industrial automation, engineering machinery, robotics, and other demanding fields.

Our core product portfolio includes high-precision inclinometers, accelerometers, electronic compasses, and Inertial Measurement Units (IMUs). These products are designed to provide accurate measurements of inclination, acceleration, orientation, and motion, supporting precise monitoring and control in complex operating environments.

Professional Inertial Sensing Solutions

As an inertial sensing technology provider, Ruicom focuses on developing sensor products that combine high precision, reliable performance, compact design, and application flexibility. Our products can be integrated into different equipment and systems according to specific sensing requirements.

Our main products include:

• High-Precision Inclinometers
• Accelerometers
• Electronic Compasses
• Inertial Measurement Units (IMUs)

By continuously improving our product technologies and understanding application requirements, we aim to provide customers with practical sensing solutions for different industrial scenarios.