Elevator Safety: From The Basics To The Future

Elevator, as an indispensable means of transportation in modern urban life, carry people's travel needs. However, with the acceleration of urbanization and the increase in building height, the safety problems of elevators are becoming more and more prominent. In this paper, we will start from the basic safety measures of the elevator, and discuss its technological progress and the role of the accessory light curtain in it.

Basic Elevator Safety Measures

The foundation of elevator safety is based on strict codes and standards. Specialized elevator safety regulatory bodies have been established in all geographical regions and areas, and strict safety codes have been formulated covering all aspects of elevator design, manufacture, installation, maintenance and use. These codes not only ensure the basic safety of elevator operation, but also include emergency rescue measures and post-accident handling procedures.

In the structural design of the elevator itself, various safety devices such as speed limiters, safety doors and electrical protection devices are important components to ensure passenger safety. The overspeed governor can quickly brake the elevator if it is descending at an abnormally high speed to prevent accidents; the safety door prevents passengers from accidentally coming into contact with the elevator shaft when the elevator is in operation and reduces safety hazards caused by human factors.

Technological Progress And Elevator Safety

As technology advances, so does elevator safety technology. Intelligent elevator systems can use sensors to monitor the operating status of elevators in real time, predict potential failures and perform maintenance in advance, greatly reducing the possibility of accidents. For example, the fault diagnosis system used in modern elevators can remotely monitor the operating status of the elevator, detect and resolve problems in a timely manner, and ensure passenger safety.

Another important technological advance is the use of light curtains in elevator accessories. A light curtain is a safety device that uses technology such as infrared or laser beams to detect the presence of objects. It is typically installed at the edge of the elevator door or at the entrance to the elevator shaft as an important part of the automatic elevator door opening and closing system. The light curtain can detect the presence of people or objects when the elevator door is closed, and once the obstacle is detected, the closing action of the elevator door is immediately stopped, which prevents the occurrence of trapping accidents.

Working Principle And Application Of Elevator Light Curtain

As an important part of modern elevator safety system, the working principle and application of elevator accessory light curtain is very critical, which can effectively improve the safety performance of the elevator and the user experience.

1.Working Principle

The basic working principle of light curtain is to use infrared or laser beams and other technologies to form a series of crisscrossing beam network,which is installed in the elevator door edge or elevator shaft entrance.This network of light beams usually consists of a transmitter and a receiver.

●Transmitter： The transmitter generates a beam of infrared light or a laser beam that is projected along a flat surface to form a web of light similar to a thin film.

●Receiver： The receiver,on the other hand, is located on the opposite side of the transmitter and receives the beam of light emitted by the transmitter.If an object or person enters the beam network,it will block some or all of the beam, and the receiver will detect a change in the signal.

2.Detection And Response

The key to light curtains is their ability to detect in real time when the beam is blocked by an object and to react quickly.Specifically：

●Object Obstruction Detection：If an object enters the light curtain area and obstructs the beam,the receiver immediately detects a change in the beam signal.

●Elevator Door Stop： As soon as the receiver detects that the light beam is blocked,it sends a signal to the elevator door control system to stop the elevator door from closing.This process is very fast,usually within a few tens of milliseconds to complete the response to ensure the safety of passengers and property.

3.Application Scenarios

Light curtains are widely used in various types of elevator systems,including but not limited to：

●Commercial And Office Building Elevator： In high-frequency elevators,light curtains can effectively prevent passengers from being trapped due to incorrect or incomplete entry when the door is closed.

●Residential Elevator： For residential users,light curtains can also ensure that children or pets are not harmed when the elevator doors close,increasing residents' sense of security.

●Public Elevator： In elevators in subway stations,hospitals and other public places,the use of light curtains can effectively manage the flow of people and prevent accidents.

4.Technology Development And Challenges

Although light curtains play an important role in elevator safety,their technological development still faces some challenges, such as：

●Environmental Adaptability： Light curtains can be affected by light interference or reflections from other objects in complex environments,and the anti-interference capability needs to be further improved.

●Cost And Reliability： High quality light curtain system costs more,how to ensure performance while reducing cost is an important direction for future development.

Future Directions And Challenges

As intelligent and automation technologies continue to advance,elevator safety systems will continue to innovate.Future light curtains may combine more advanced sensor technology and artificial intelligence algorithms to achieve more accurate and intelligent object detection and action response,further enhancing elevator safety and user experience.In conclusion,as an important representative of modern elevator safety technology,elevator accessory light curtains provide safety for passengers and operating and maintenance personnel through their efficient detection and response mechanisms.Elevator safety will continue to be an important issue as urban construction progresses and people's safety demands increase.Through continuous innovation and technological advancement,we are confident that we can further enhance the safety performance of elevators and provide passengers with a safer and more comfortable travel experience.

As an indispensable part of modern cities,elevator safety is directly related to the safety of people's lives and property.From basic safety measures to high-tech applications,the development plan of elevator safety demonstrates the crystallization of human technical wisdom.In the future,with the continuous advancement of technology and expansion of applications, elevators will become smarter and safer,providing more reliable transportation safety for the development of global cities and the lives of residents.