WITMOTION WTGAHRS3-TTL 6-Axis Inertial Navigation GPS-IMU Sensor Instruction Manual

1. Produktüberschreitungview

The WITMOTION WTGAHRS3-TTL is an industrial-grade 6-axis inertial navigation GPS-IMU sensor. It integrates an accelerometer, gyroscopes, and angle measurement capabilities, providing precise static (0.05°) and dynamic (0.1°) angle data, along with latitude and longitude information.

This high-performance sensor offers rock-solid data output, including 3-axis acceleration, electronic gyroscope, angle, magnet, air pressure, height, GPS, altitude, longitude, and ground speed. It leverages 8 years of professional attitude measurement solution expertise, integrating dynamic fusion algorithms and Kalman filtering to ensure stable data output, excellent polarization stability, low noise levels, and increased measurement accuracy.

Designed for robustness, the sensor features an integrated accelerometer, magnetometer, gyroscope, barometer, NMEA-0183 standard GPS (UBLOX 6M), and a 32-bit high-performance core processor. Its durable aluminum housing provides IP67 waterproof, dustproof, and shockproof protection, making it suitable for various harsh test environments.

2. Hauptmerkmale

• 6-Axis AHRS IMU: Provides comprehensive motion data including 3-axis acceleration, electronic gyroscope, angle, magnet, air pressure, height, GPS, altitude, longitude, and ground speed.
• Advanced Sensor Fusion: Utilizes dynamic fusion algorithms and Kalman filtering for stable, accurate, and low-noise data output.
• Integriertes GPS: Features NMEA-0183 standard GPS (UBLOX 6M) for precise positioning and navigation.
• Robust Industrial Design: Housed in high-quality aluminum, offering IP67 waterproof, dustproof, and shockproof protection.
• Hohe Präzision: Static angle accuracy of 0.05° and dynamic angle accuracy of 0.1°.
• Multi-Constellation Support: Supports BDS/GPS/QZSS/GLONASS satellite navigation systems.
• Vielseitige Konnektivität: TTL/232 serial data interface.
• PC Software Included: Provides software for data recording, 3D model display, curve display, dashboard, and configuration.

3. Lieferumfang

Das Produktpaket umfasst typischerweise:

• 1 x WTGAHRS3-TTL Sensor
• 1 x Instruction Card
• 1 x Verbindungskabel

Image: WTGAHRS3-TTL sensor and its included accessories, such as the instruction card and connection cable, neatly packed in a small box.

4. Einrichtung und Installation

Follow these steps to set up your WTGAHRS3-TTL sensor:

1. Install Serial Driver: Ensure the necessary serial drivers are installed on your computer.
2. Sensor anschließen: Connect the sensor to your computer or Android smartphone using the provided serial cable and appropriate adapter (USB-TTL cable, Type-C converter). Refer to the PIN definition for correct wiring: VCC to VCC, TX to RX, RX to TX, GND to GND.
3. Connect GPS External Antenna: For GPS functionality, connect the external GPS antenna to the sensor. Ensure the antenna has a clear view des Himmels für optimalen Signalempfang.
4. Confirm COM Port: Verify the assigned COM port in your device manager (for PC) or ensure the device is detected by the phone (only CH340 driver's device can be detected by phone).
5. Offene Software: Launch the WitMotion software (Minimu.exe for PC or the WitMotion APP for Android). Data should appear automatically after the auto-search finishes.

Image: Detailed diagram showing the dimensions of the WTGAHRS3-TTL sensor and its pinout for VCC, RXD, TXD, and GND connections.

5. Bedienungsanleitung

Once connected, the WitMotion software (PC or APP) will display real-time data from the sensor. You can monitor acceleration, angular velocity, angles, magnetic field, and GPS data. The software provides various display modes, including graphical representations and 3D models, to visualize the sensor's attitude and motion.

Ensure the sensor is placed on a stable, non-magnetic surface during operation to avoid interference with magnetic field readings. For GPS functionality, operate the sensor outdoors with a clear view des Himmels.

Image: Screenshot of the WitMotion PC software interface, showing various data displays including data record, 3D model, curve display, dashboard, configuration, and Windows compatibility.

6. Kalibrierung

Accurate calibration is crucial for optimal sensor performance. The WitMotion software provides tools for Acceleration, Magnetic Field, and Angle Reference calibration.

6.1. Beschleunigungskalibrierung

To decrease acceleration bias, place the sensor horizontally on an even surface and initiate acceleration calibration through the software. The software will guide you through the process, typically requiring the sensor to remain still for a few seconds.

6.2. Magnetic Field Calibration

Magnetic field calibration compensates for local magnetic disturbances. This process involves rotating the sensor 360° around its X, Y, and Z axes respectively while connected to the software. Ensure no magnetic interference is present during this process.

6.3. Angle Reference Setting

The angle reference function allows you to define a specific orientation as the zero-degree reference for the X and Y axes. This is useful for applications where a custom reference point is needed.

7. Softwarenutzung

The WitMotion software provides a comprehensive interface for interacting with your sensor. It allows for real-time data monitoring, configuration, and data logging.

• Datensatz: Log sensor data to a TXT file zur späteren Analyse.
• 3D Model Display: Visualize the sensor's orientation in a 3D environment.
• Kurvenanzeige: View real-time sensor data as dynamic graphs.
• Dashboard-Anzeige: An intuitive overview of all sensor attitude motion.
• Konfiguration: Adjust sensor parameters such as baud rate, output rate, and content.
• Windows-Kompatibilität: The PC software is compatible with Windows operating systems.

Image: Screenshot of the WitMotion PC software displaying various sensor data in graphical format, including acceleration, gyroscope, angle, and magnetic field data.

Image: Icons representing the professional inertial navigation sensor's capabilities, including acceleration, gyroscope, angle, longitude, dimension, and ground speed.

8. Spezifikationen

Image: A table detailing the parameters of the WTGAHRS3-TTL sensor, including measurement latitude, measuring range for acceleration, gyroscope, and angle, angle accuracy, output content, data interface, weight, and line length.

9. Fehlerbehebung

• Keine Datenausgabe:
  • Check all physical connections (VCC, TX, RX, GND).
  • Verify the correct COM port and baud rate are selected in the software.
  • Ensure serial drivers are correctly installed.
• Ungenaue Messwerte:
  • Perform Acceleration and Magnetic Field calibration as described in Section 6.
  • Ensure the sensor is placed on a stable, non-magnetic surface.
  • For GPS, ensure the external antenna has a clear view des Himmels.
• Software erkennt Gerät nicht:
  • Restart the software and reconnect the sensor.
  • Check device manager for any driver issues.

10. Garantie und Support

The WTGAHRS3-TTL sensor comes with a 12-month warranty. WITMOTION provides lifetime friendly customer service.

For detailed tutorials and support, you can:

• Refer to the tutorial link printed on the guide card inside the package.
• Search wit-motion.com to download the full tutorial and software.
• Contact customer support at support@wit-motion.com for assistance.