News about elevators

Lifts. User management

The elevator passenger can and must know the rules of management, but does not pass exams and does not receive driving rights. This means that the elevator control system must be intuitive, reliable and safe. There are also, in rare cases, when a special person controls the elevator, but this is more an attribute of pathos than a necessity.

Modern elevator management

The "normal operation" mode is realized when the cab arrives at the site on a call, stops, opens the door, receives users, closes the door and moves on the instructions of passengers. After arriving and emptying the cabin, the elevator closes the door and waits for the next call.

In low-rise buildings and hospitals, the throughput of elevators is low, and the transportation of patients is often more important than the selection of fellow travelers. In such elevators, requests for a passing stop are ignored by the control system until the call is completed until the end and the cab is released.

In high-rise residential buildings, the control scheme with one-way gathering of fellow travelers is most often used. The control circuit gives the command to raise the cab to the very top request, and then going down picks up all while it can take fellow travelers without overload.

In administrative and public buildings, the passenger flow is high and multidirectional, so the control system implements a scheme for the complete selection of users in order to operate elevators efficiently. To do this, the buttons for selecting the direction of the passenger "up" or "down" are installed on each site, if the wishes and movement of the cabin coincide, it stops and picks it up.
In modern high-rise buildings, in order to increase efficiency and economy, various algorithms of the normal control mode for several elevators are implemented, which, in addition to the above conditions, are individual and depend on the particular manufacturer, but there are common features:

• The busiest site has the highest priority and vacant cabs go there.
• Picks up a passing call to the nearest underloaded cab.
• It is unacceptable to send several cabs to one call.

High-rise buildings are most often business centers or other administrative buildings, therefore, they have "evening" and "morning" modes. In the morning, it is necessary to quickly separate the employees from the first floor, all free cabins are sent to it. In the evening, on the contrary, free cabs rise to the floor with the highest challenge and, going down to the first, they select everyone.

Additional control from the elevator car

On freight and passenger lifts there is a loading mode, when the doors do not close automatically, before it ends and the loaded cabin moves, ignoring the associated calls, only by orders from its remote control.

Often, in the event of a fire hazard, a modern cabin can be forced to go to the first floor and open the doors automatically (when trying to smoke). The regime for transporting rescuers with a special key also gives them the right to priority control of the cabin.
Management of the elevator outside the cab and call buttons on the floor for auditing, repair, and elimination of an accident is not available to the user and this is the right safety measure.