电梯

Senfi里的电梯代表着现实世界中的物理电梯。电梯是Senfi中的专用传感器，可能包含一个或多个测量值。

必须在测量中创建lsid标签，并将其标记为必需标签。

三维模型中的电梯是由电梯井道（蓝色盒子）和电梯轿厢（绿点）表示。

Lobby

Lobby represents the lift lobby in the real world. Lobby may contain one or more lifts.

Stop

Stops are levels that the lift can travel. Stops starts from 1 and begins from the lowest to the highest serving level.

For example: Lift A in below image is serving from level 2 of Blk A, so stop 1 of the Lift A is Level 2.

Lifts are associated with lobby and lift's stops may within one or more blocks of the same building.

For example: Lift A in below image is serving levels within Blk A but Lift C is serving from level 1 of Blk B to level 5 of blk C.

Lift relation with BBL

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