Guardian de sécurité ultrasonique topauto pour plates-formes de travail aérien

**Ultrasonic Ranging Mechanism**
- Frequency: 40kHz
- Formula: Distance = Speed of Sound × Time Difference / 2
- Technology: CDMA anti-interference
- Accuracy: ±2.0cm–4.6cm (voltage-adjusted)
- Response: <0.1s

**Safety Thresholds (Voltage-Dependent)**
| Voltage | Detection | Alert | Accuracy |
|---------|-----------|-------|----------|
| 500kV   | 6.0m      | 5.1m  | 4.6cm    |
| 220kV   | 4.0m      | 3.1m  | 2.8cm    |
| 110kV   | 2.5m      | 1.61m | 2.4cm    |
| 35kV    | 1.5m      | 0.8m  | 2.0cm    |

**Detection Units**
1. Upper Platform: 4×360° probes
2. Scissor Bracket: Node-mounted modules
3. Lower Platform: 
   - Laser radar (forward detection)
   - Ultrasonic (blind spots)

**Control Host**
- Wireless: Zigbee 2.4GHz
- Circuit: Dual comparator
- Design: Shockproof casing w/ wheels

**Alert System**
- Audio-visual alarms
- Hydraulic power cutoff
- Dual-end personnel alerts

**Full-Scenario Features**
- Anti-interference: Rain/fog/dark operation
- Flexural compensation: Arm elasticity correction

**Protection Modes**
- Active: Real-time ultrasonic warnings
- Passive: Physical guardrails w/ emergency brake

**Intelligent Management**
- Touchscreen data display
- Watchdog circuit auto-reset
- USB data export

1. **Power Maintenance**  
   - Safe distance from live equipment (e.g. substations)
   
2. **Dense Construction**  
   - Obstacle avoidance in narrow spaces
   
3. **Low-Visibility Ops**  
   - Night/indoor distance judgment replacement