Elevator dispatching--research report

Demand Research Report

Project background:

Shijiazhuang Railway University basic teaching building is a 18-storey building, its interior equipped with 4 elevators, students and teachers to use the elevator peak time relative concentration in each class/class, so the use of elevators with sudden and heavy load characteristics, so design a reasonable elevator scheduling algorithm to avoid the emergence of "bus", That is, the elevator as a bus, it from the bottom to the top, stop at each floor, open the door, let people in and out, and then close the door, continue to move forward. After reaching the top level, it will go down. Can greatly improve the efficiency of the elevator.

The elevator configuration of the basic teaching building of Shijiazhuang Railway University is as follows:

Number of Elevators: 4

The maximum capacity of the elevator is 15 people

Elevator passes per floor: 3 seconds

Elevator Open/close time 10 seconds

Average passenger weight: 70 kg (max. 120 kg, min. 45 kg)

Passenger out of elevator time: 5 seconds

The elevators are set up as follows:

1. When the elevator arrives at the destination floor and stops, the passenger presses the door button, which can arouse the opening function of the elevator in advance. But no passengers. When you open the button, the elevator will automatically open after 1 seconds of stopping.

2. When all passengers are in the elevator, ready to let the elevator start to run, the passenger press the closing button, so that the elevator door closed early to enter the state of operation. Set the elevator automatic closing time to 8 seconds.

3. Press the elevator external up button to indicate a request to go upstairs, when this button is pressed, when the elevator arrives at the floor and the direction of operation is upward, the elevator stops and opens automatically, and responds to the request, canceling the request signal after the request is answered.

4. Press the elevator external down button to indicate downstairs request, when this button is pressed, when the elevator arrives at the floor and the direction of operation is downward, the elevator stops to open automatically, and responds to the request, after the request is answered, cancels the request signal.

The traditional elevator scheduling algorithms on the network are:

1. First come first service algorithm (FCFS)

2. Shortest search floor time First algorithm (SSTF)

3. Scanning algorithm (scan)

4.LOOK algorithm

5.SAFT algorithm

Real-time elevator scheduling algorithm on the network:

1. First cut-off time priority scheduling algorithm

2.SCAN-EDF algorithm

3.PI algorithm

4.fd-scan algorithm

Elevator Group control scheduling on the network

1. Give expert system a bit of group control method

2. The elevator Group control method given fuzzy logic

3. The elevator Group control method given genetic algorithm

4. The elevator Group control method giving the scenic network

5. The elevator Group control method given to the Fuzzy Scenic network

My elevator control algorithm ideas:

According to the order of the user request, the floor number is sequentially deposited into the array, in order to respond in sequence, in response to scan the array during the operation of the requested running process of the floor, docked. Subtract the corresponding floor in the array, and then loop through the process after the run is complete.

Elevator dispatching--research report