Terra Vision Pro

Spec sheet:
2. Core Features

• Integrated GPR module in shovel blade for near-surface subsurface scanning

• Ultrasonic short-range detector to confirm close-proximity objects

• Force/pressure sensor on blade tip to warn of excessive digging force

• 3.5 inch OLED screen for real-time feedback

• Vibration motor for tactile alerts

• RGB LED ring for quick visual danger indication

• Microcontroller-based sensor fusion for improved accuracy

• Rechargeable battery system with 12 hour operation time

• Weather-resistant housing for outdoor digs

• Digital data logging (optional) for excavation records

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3. Detailed Specifications

3.1 Sensor System

Ground-Penetrating Radar (GPR)

• Type: Compact, shallow-depth GPR probe

• Operating frequency: 1.5–2.5 GHz (high-frequency, high resolution)

• Expected penetration: Up to 10–20 cm, depending on soil moisture and density

• Resolution: Capable of detecting objects ≥ 1.5–2 cm

• Output: A-scan reflection waveform, depth estimate

Ultrasonic Sensor

• Type: Short-range air-coupled ultrasonic

• Measuring range: 0–20 cm from shovel blade

• Accuracy: ± 1 cm

• Purpose: Confirm object proximity when GPR detects shallow returns

Force/Pressure Sensor

• Type: Thin-film FSR

• Pressure range: 0–50 lb

• Warning threshold: Adjustable (default set to low force for archaeology)

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3.2 Processing Unit

Microcontroller

• Model: Arduino

• Processor: Snapdragon 8c 

• Speed: 2.5ghz

• Internal RAM: 8GB

• Functions:

  • Preprocess and filter GPR echoes

  • Fuse ultrasonic + GPR + pressure data

  • Real time alerts and screen updates

  • Log detection events

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3.3 User Interface

OLED Display

• Size: 5  inches

• Type: 10-bit Full-color OLED with 4000 Nits brightness

• Resolution: 2k

• Displays:

  • Depth estimate

  • Sensor confidence levels

  • Object warning graphics

  • Settings/sensitivity mode

LED Warning Ring

• Colors:

  • Green – no object detected

  • Yellow – possible object shallow

  • Red – stop digging, object close

Haptic & Audio Alerts

• Vibration motor: 3-level intensity

• Buzzer: single beep (warning), fast beeps (danger)

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3.4 Power & Battery

• Battery type: Rechargeable silicon Carbon

• Capacity: 20000mAh

• Power runtime: 12  hours on normal scan mode

• Charging: USB-C, 5V input

• Power management: Over-voltage and thermal protection

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3.5 Physical Construction

Shovel Body

• Material: Lightweight aluminum or reinforced plastic

• Weight: 6-8 lbs (prototype target)

• Waterproof rating: Designed for outdoor dust & splash resistance (IP68)

Modes

• Normal Excavation Mode – balanced sensitivity

• High Sensitivity Mode – for fragile or crowded sites

• Calibration Mode – adjust to soil type

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5. Safety & Compliance

• Low-power GPR safe for human exposure

• No sharp internal electronics exposed

• Battery protected against short circuit