The EzDig Step-by-Step Guide: Setup and Best Practices refers to the comprehensive deployment and operational framework for EZDig, a precision 2D and 3D excavator machine guidance sensor system. This technology uses draw-wire and Inertial Measurement Unit (IMU) sensors attached to an excavator’s boom, stick, and bucket to precisely track the positioning of the bucket tip. This tracking helps operators dig to the exact depth and slope required without leaving the cab.
The essential steps for setting up the system and the best practices recommended for deployment are outlined below. Step-by-Step Setup Guide 1. Pre-Installation and Bracket Mounting
Sensor Placement: Map out the exact locations on the excavator’s links (boom, stick, and bucket).
Bracket Security: Weld or bolt the sensor housing brackets securely to the structural frames. Ensure they are clear of potential crush points or debris impacts during digging operations.
Draw-Wire Route: Align the draw-wire sensors perfectly with the line of motion of the hydraulic cylinders to avoid friction wear or line snapping. 2. Component and Sensor Wiring
Anti-Vibration Measures: Fit anti-vibration rubber dampeners under the sensor mounts. This reduces machine chatter and prevents sensor drift.
CAN Bus Connection: Route all sensor cables through a central Controller Area Network (CAN) bus to handle data synchronization.
Power Connection: Wire the system directly into the excavator’s auxiliary power. Use a dedicated fuse and ensure it matches the manufacturer’s voltage limitations. 3. System Calibration
Cylinder Limits: Manually calibrate the maximum and minimum extensions for each hydraulic cylinder to establish accurate travel boundaries.
Bucket Tip Reference: Position the excavator on a flat surface and use physical measurements (height, length, angles) to calculate the exact forward kinematics baseline for the bucket tip.
Zeroing out: Save these variables in the cab display module as your operational baseline. Operational Best Practices Data Accuracy & Drift Management
Enforce Vibration Isolation: Operating an excavator generates continuous heavy shockwaves. Always double-check that your anti-vibration padding is intact, as failing to use it can cause severe coordinate drift.
Daily Zero-Point Verification: Before starting a shift, place the bucket tip on a known reference benchmark on the ground. Check this against the cab interface to ensure the system is properly zeroed out. Environmental and Physical Protection
Debris Shields: Ensure all sensors and draw-wires are fitted with heavy-duty physical guards to shield them from rock shards, mud accumulation, and abrasive construction debris.
Cable Routing Protection: Run all CAN bus cables tightly along the inside curves of the excavator links. Secure them with heavy-duty zip ties or protective conduits to prevent them from catching on objects or stretching during movement. Multi-Channel Troubleshooting
Isolate Noise: If you experience sensor reading drops or erratic measurements, look at individual channel data lines on your control interface. Isolating channels makes it easier to figure out if you have a failing IMU or a snagged draw-wire line.
If you’d like to narrow down these steps for your specific workspace, please let me know: The exact model of the excavator you are configuring.
Whether you are using a 2D laser-guided setup or a full 3D GPS/GNSS integrated system.
The typical ground and environmental conditions (e.g., mud, rock, heavy vibration) of your job site.
Analysis of the Position Recognition of the Bucket Tip … – MDPI