When you're waiting for a lift to arrive it can seem like a long time. To a company it can mean lost productivity and lost customers − or both. Now there is a way to balance the number of lifts and their round-trip time with their cost and maintenance. Lisi is a powerful, easy-to-use lift design and simulation tool, examining both up-peak and down-peak scenarios. With Lisi you achieve the optimum lift strategy, making best use of time and money.
What Lisi does:
Lisi enables you to design and simulate lift options to optimise the vertical movement of people in a building. In its design mode, Lisi proposes the optimum lift strategies for a particular building, drawing on current design practice. You can choose to simulate this or any other option, to establish its maximum wait time and overall effectiveness.
How Lisi works:
Design Information
In the first stage of the process, Lisi takes you through a Lift design wizard, enabling you to define the necessary design information. This includes:
· building data − number of floors, height of each floor and occupancy
· lift design parameters − design interval, up-peak arrival rate, lift velocity plus door opening, closing and controlling details.
Drawing on current design practice and guides, Lisi calculates and grades a number of lift options. For each option, Lisi generates: number of lifts and lift capacity; achieved lift car interval; handling capacity; and round trip time. At this stage you can select the most appropriate option, edit any option or define the option you wish to simulate.
Lift Simulation
Having defined the lift information, Lisi can be set up to perform a lift simulation.
First, you define a number of simulation periods or scenarios, such as up-peak, down-peak, lunch time, or any two-way lift option you wish to consider. You can also define body size to take account of large objects that may be carried in service lifts. You can view the lift movement as it happens, with a 'live' display of queue lengths on each floor.
When the simulation has been completed, you can produce in graph format the queuing time distribution and maximum queue lengths on each floor.
You can also produce full numerical results, including lift movement data − for example, the number of starts and stops for each lift.
Commercial Benefits:
Lisi can save you capital costs by demonstrating you need less lift capability, or increase your productivity by reducing the waiting time of building users.
Lisi can simulate two-way lift usage and will supply the necessary lift movement data to help design the lift system.
Lisi puts you in control by enabling you to design a lift system without relying on the manufacturer. You can independently, quickly and easily ensure that you have the most appropriate lift configuration for your building.
