Air pressure sensor algorithm to detect elevator direction of motion
AssigneeOtis Elevator Company
InventorDerk Oscar Pahlke
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Abstract
A method of monitoring a direction of motion of a conveyance apparatus within a conveyance system including: detecting a first height at a first time; detecting a second height at a first selected time period prior to the first time; detecting a height change of a conveyance apparatus within the conveyance system in response to the first height and the second height; determining whether the height change is greater than a first selected height change; and determining that the conveyance apparatus is moving in an upward direction when the height change is greater than the first selected height change.
Claims13
A method of monitoring a direction of motion of a conveyance apparatus within a conveyance system, the method comprising:
- detecting a first height at a first time;
- detecting a second height at a first selected time period prior to the first time;
- detecting a height change of a conveyance apparatus within the conveyance system in response to the first height and the second height;
- determining whether the height change is greater than a first selected height change;
- and
- determining that the conveyance apparatus is moving in an upward direction when the height change is greater than the first selected height change.
A method of monitoring a direction of motion of a conveyance apparatus within a conveyance system, the method comprising:
- detecting a first height at a first time;
- detecting a second height at a first selected time period prior to the first time;
- detecting a height change of a conveyance apparatus within the conveyance system in response to the first height and the second height;
- determining whether the height change is less than a first selected height change;
- and
- determining that the conveyance apparatus is moving in a downward direction when the height change is less than the first selected height change.
A method of monitoring a direction of motion of a conveyance apparatus within a conveyance system, the method comprising:
- detecting a first height at a first time;
- detecting a second height at a first selected time period prior to the first time;
- detecting a height change of a conveyance apparatus within the conveyance system in response to the first height and the second height;
- determining whether the height change is greater than a first selected height change;
- and
- determining that the conveyance apparatus is not moving in an upward direction when the height change is not greater than the first selected height change.
Dependencies are inferred from the claim text.