Basic Understanding of

Elevator Traffic Analysis

By Abul Kalam Azad

Disclaimer:

The points discussed here are for the basic understanding only.

Professional approach and support recommended for actual study.

Elevator Traffic Analysis approximates the Waiting time for an Elevator and assumes How Efficiently the Elevators will serve the Building Population.

Do we know?

WI – Waiting Interval or Average Waiting TimeRTT – Round Trip TimeHC – Handling Capacity or Efficiency

?

RTT – Round Trip Time

Time taken by a single Elevator to complete its assigned tasks and return to Main Floor

Door Open & Close

Door Open & Close

up: acceleration + rated speed +deceleration + stop + door open + passenger exit + door close +

repeat it ‘s’ number of times +

return: acceleration + rated speed + deceleration + stop + door open

up: acceleration + rated speed +deceleration + stop + door open + passenger exit + door close +

repeat it ‘s’ number of times +

return: acceleration + rated speed + deceleration + stop + door open

n = No. of stops, Np = Car loadingn = No. of stops, Np = Car loading

WI – Waiting Interval or Average Waiting TimeTime taken by an Elevator (or Elevator in Group) to serve a passenger, after he has called the Elevator By pressing Call Button.

WI – Waiting Interval or Average Waiting TimeRTT – Round Trip TimeTime taken by an Elevator (or Elevator in Group) to serve a passenger, after he has called the Elevator By pressing Call Button.

WI = RTT / Number of units in a group. In this case RTT / 1 = WI

WI = RTT / Number of units in a group. In this case RTT / 3 = WI

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HC – Handling Capacity or Efficiency

Number of Passengers the Elevator can transport in 5 minutes.

WI – Waiting Interval or Average Waiting TimeRTT – Round Trip TimeHC – Handling Capacity or Efficiency

WI: Time taken by an Elevator (or Elevator in Group) to serve a passenger, after he has called the Elevator By pressing Call Button.

RTT: Time taken by a single Elevator to complete its assigned tasks and return to Main Floor

HC: Number of Passengers the Elevator can transport in 5 minutes.

Elevator Traffic Analysis approximates the Waiting time for an Elevator and assumes How Efficiently the Elevators will serve the Building Population.

In order to get those results, we need to input following data: 1. Capacity, 2. Speed, 3. No. of stops, 4. Travel, 5. Loading percentage, 6. Probable Stops, 7. Door open / close time, 8. Passenger entry exit time, 9. Acceleration / Deceleration / Rated Speed etc.

OUTPUT

INPUT PROCESS

RTT

AVERAGE WI

HC

HC %

CAPACITY

SPEED

STOPS

NO. OF LIFTS

FLOOR HT.

TRAVEL

EXP. TRAVEL

POPULATION

LOADING %

TRAFFIC ANALYSIS SOFTWARE

up: acceleration + rated speed +deceleration + stop + door open + passenger exit + door close + repeat it ‘s’ number of times + return: acceleration + rated speed + deceleration + stop + door open +RTT/N +All required functions

Basic Understanding of Elevator Traffic Analysis

By Abul Kalam Azad

Thank you