Virtual sensor for elevator monitoring

A sensor system for monitoring a conveyance apparatus of a conveyance system, wherein the conveyance system is an elevator system and the conveyance apparatus is an elevator car or wherein the conveyance system is an escalator system and the conveyance apparatus is a moving stair or wherein the conveyance system is a moving walkway and the conveyance apparatus is a moving pallet, the sensor system comprising:

• a primary sensing apparatus located at a primary location, the primary sensing apparatus configured to detect a vibratory signature at the primary location during a commissioning phase and a vibratory signature at the primary location during a normal operation phase;
• a secondary sensing apparatus located at a secondary location, the secondary sensing apparatus configured to detect a vibratory signature at the secondary location during the commissioning phase;
• and
• a data conversion module configured to perform operations comprising:
• receiving the vibratory signature at the primary location during the commissioning phase from the primary sensing apparatus;
• receiving the vibratory signature at the secondary location during the commissioning phase from the secondary sensing apparatus;
• determining a transfer algorithm in response to the vibratory signature at the primary location during the commissioning phase and the vibratory signature at the secondary location during the commissioning phase;
• receiving the vibratory signature at the primary location during the normal operation phase from the primary sensing apparatus;
• and
• converting the vibratory signature at the primary location during the normal operation phase to a vibratory signature at the secondary location during the normal operation phase using the transfer algorithm;
• wherein the secondary sensing apparatus is removed from the conveyance system prior to the detecting the vibratory signature at the primary location during the normal operation phase using the primary sensing apparatus located at the primary location;
• and converting the vibratory signature at the primary location during the normal operation phase to a vibratory signature at the secondary location during the normal operation phase using the transfer algorithm.

A computer program product tangibly embodied on a computer readable medium, the computer program product including instructions that, when executed by a processor, cause the processor to perform operations of monitoring a conveyance apparatus within a conveyance system, wherein the conveyance system is an elevator system and the conveyance apparatus is an elevator car or wherein the conveyance system is an escalator system and the conveyance apparatus is a moving stair or wherein the conveyance system is a moving walkway and the conveyance apparatus is a moving pallet, the operations comprising:

• detecting a vibratory signature at a primary location during a commissioning phase using a primary sensing apparatus located at the primary location;
• detecting a vibratory signature at a secondary location during the commissioning phase using a secondary sensing apparatus located at the secondary location;
• determining a transfer algorithm in response to the vibratory signature at the primary location during the commissioning phase and the vibratory signature at the secondary location during the commissioning phase;
• detecting a vibratory signature at the primary location during a normal operation phase using the primary sensing apparatus located at the primary location;
• and
• converting the vibratory signature at the primary location during the normal operation phase to a vibratory signature at the secondary location during the normal operation phase using the transfer algorithm;
• wherein the secondary sensing apparatus is removed from the conveyance system prior to the detecting the vibratory signature at the primary location during a normal operation phase using the primary sensing apparatus located at the primary location;
• and converting the vibratory signature at the primary location during the normal operation phase to a vibratory signature at the secondary location during the normal operation phase using the transfer algorithm.