The function of elevator light curtain

1.Ensuring Passenger Safety

The elevator light curtain detects obstacles in the elevator door area by emitting and receiving infrared rays. When a passenger or object inadvertently enters the gap between the elevator car door and the landing door, or attempts to cross as the elevator doors are closing, the elevator light curtain immediately detects this and triggers the doors to reopen, thereby preventing accidents such as pinching or other unexpected incidents. This design significantly enhances the safety performance of elevators, providing additional safety assurance for passengers.

2.Extending Elevator Lifespan

The elevator light curtain not only ensures passenger safety but also effectively extends the lifespan of the elevator. During elevator operation, the gap between the car door and the landing door generates significant friction, which can lead to wear and tear on elevator components. The elevator light curtain promptly detects and prevents passengers or objects from entering this gap, thereby reducing wear on elevator parts and extending the lifespan of the elevator.

3.Reducing Maintenance Costs

Since the elevator light curtain can effectively prevent some accidents from occurring, it can reduce the number of elevator repairs and maintenance costs. This not only saves expenses for property management but also improves the reliability and stability of the elevator.

4.Working Principle and Composition

The elevator light curtain mainly consists of infrared emitters and receivers installed on both sides of the elevator car door, a power supply box on the top of the car, and a dedicated flexible cable. Typically, more than 30 pairs of infrared emitters and receivers are arranged on both sides of the elevator car door, forming a dense "protection net". When any of these beams of light are obstructed, the control system immediately sends a signal to open the doors, causing the elevator doors to stop closing and reverse to open until the passenger or obstruction leaves the warning area, after which the elevator doors can close normally.

5.Practical Applications and Precautions

Elevator light curtains are widely used in various types of elevators, including passenger and freight elevators, becoming an indispensable safety device in modern buildings. However, there are some precautions to consider during use, such as avoiding obstructions to the light curtain, keeping it clean and intact, etc. Additionally, regular inspections and maintenance of the elevator light curtain are necessary to ensure its proper function and maximize its safety assurance role.

In summary, the elevator light curtain plays a crucial role in elevator safety, not only ensuring passenger safety but also extending the lifespan of the elevator and reducing maintenance costs. Therefore, during the selection, installation, and maintenance of elevators, the function and performance of the elevator light curtain should be given full attention.