Control function of group control elevator
Group control elevator is a number of elevators centrally arranged, a total of outside the hall call button, according to the prescribed procedures for centralized control and control of the elevator. In addition to the above single ladder control functions, the group control elevators can also be provided by the following functions.
1. the maximum and minimum function.
When 1 elevators are designated by the system, the time of the waiting ladder is minimized and the possible maximum waiting time is predicted. The time of the waiting ladder can be balanced and the long waiting time is prevented.
2. priority scheduling.
When the waiting time does not exceed the specified value, the call to the hall of a floor is called by the elevator that has accepted the instruction in this layer.
3. regional priority control.
When there are a series of summons, the area priority control system first detectable the calling signal of "long wait", then checks whether there are elevators near these calls. If there is, it is called by the nearby elevator, otherwise it is controlled by the "maximum and minimum" principle.
4. the centralized control of the special floor.
Including: the restaurant, performance hall in the system; according to the car load and determine whether the frequency of call congestion; in a crowded elevator, the deployment of 2 full-time for the floor service; the crowded floor does not cancel the call; the crowded automatically extend the opening time; the congestion recovery after transfer is controlled by the maximum and minimum principle.
5. full report.
Statistical summon and load conditions are used to predict full load and avoid the transfer of 1 elevators to one layer in the middle. This function only acts on the same direction signal.
6. the starting elevator is first.
The call to a certain level, the shortest principle of call time should be responsible for the elevator to stop. But at this time the system first judges if the elevator is not started, and the time of the passenger waiting for the elevator is too long when the other elevators are called. If it is long, the other elevators should be called without starting the waiting elevator.
7. "long waiting" call control.
If a passenger waiting for a long time occurs when the "maximum and minimum" principle is controlled, it will be transferred to the "long time waiting" call control, and another 1 elevators will be sent to the call.
8. special floor service.
When the special floor is summoned, 1 of the elevators are relieved of the group control to serve the special floor.
9. special services.
The elevator gives priority to providing service to the designated floor.
10. peak service.
When traffic tends to peak or lower peak, the elevator will automatically strengthen the service of the larger party.
11. run independently.
Press the independent operation switch in the sedan chair, the elevator is separated from the group control system, only at this time the button instructions in the sedan chair play a role.
12. decentralized control.
According to the number of elevators, low, middle and high base stations are set up in the building for useless elevators to stop.
13. main layer stops.
In the idle time, make sure that 1 elevators are stopped at the main floor.
14. operating modes.
Low peak mode: enter the low peak traffic mode in bad times. (2) routine mode: the elevator runs according to the principle of "psychological waiting time" or "maximum minimum". Upper peak: peak time in the morning, all elevators are heading to the main layer to avoid congestion. Noon service: strengthen the dining room service. Downlink peak: during the evening peak, we should strengthen the service of the congested layer.
15. energy saving operation.
When the traffic demand is small, the system also finds that the waiting time is lower than the predetermined value, which means that the service has exceeded the demand. The idle elevator will stop running, turn off the light and fan, or run the speed limit, and enter the energy saving operation state. If the demand is increased, then the elevator is started.
16. short distance avoidance.
When the two car is at a certain distance from the same well, it will generate airflow noise when approaching at a high speed. At this time, the elevator will keep a certain distance to each other by testing.
17. instant forecast function.
Press the call button of the hall to predict which elevator will arrive first and once again when you arrive.
18. monitoring panel.
The monitoring panel is installed in the control room, and the operation of multiple elevators can be monitored through the light indication, and the optimal operation mode can be selected.
The group controlled standby power supply operation. When the standby power is opened, all the elevators return to the specified layer in turn. Then the limited number of elevators will continue to operate with a standby power supply.
19. group control fire operation.
Press the fire switch and all the elevators drive to the emergency layer so that passengers can escape from the building.
20. uncontrolled elevator handling.
If an elevator is out of order, the original call is called to the other elevator.
21. fault backup.
When the group control management system fails, a simple group control function can be performed.