1. Applicable to all kinds of tower cranes, which can avoid collision between multiple tower cranes during cooperative operation; 2. Real-time detection and display of the operating status of the tower crane, safe and visible; 3. Five limits of force, torque, amplitude, height, rotation, and overall, more comprehensive protection; 4. Three-dimensional group anti-collision function based on tower crane behavior; 5. Area protection function to prevent the car from entering the protected area; 6. Lifting reminder function, precise positioning, improve driver's working efficiency; 7. Tilt alarm function, the system will give an alarm prompt when the tower crane is tilted due to loose bolts or diagonal pull. 8. Remote GPRS, GPS positioning function, check the tower crane's real-time running status online at any time; 9. Height and limit rotation function, more accurate, with early warning deceleration function; 10. Remote upgrade function, easily realize remote maintenance and provide better service for drivers; 11. "Black box" functions such as work cycle recording, real-time data recording, and system modification log recording; 12. The wire rope magnification can be easily switched for daily use;