Method and system for identifying anomalies during operation of a conveyor system, in particular of an airport luggage carousel
Airport luggage carousels are usually operated in a run-to-failure approach that necessarily leads to failures. Anomalies are detected during operation of a conveyor system having a revolving drive chain, a drive unit and a conveyor belt. The drive chain serves to transmit force and motion from a drive unit to a conveyor belt, and has chain elements and pins connecting them. At least one of the pins is a force measurement pin that registers the forces acting thereon during movement of the drive chain. The registered forces are transmitted wirelessly to the background system together with a timestamp and/or a location stamp and an identity of the force measurement pin. The transmitted data are analyzed in the background system and, in the event of deviations, identified as an anomaly and signaled by a notification. The measurement results are evaluated to derive maintenance measures in a targeted manner.
1 . A method for identifying anomalies during an operation of a conveyor system for transporting piece goods,
the conveyor system including a revolving drive chain, a drive unit, and a conveying section, the drive chain serving to transmit a driving force from the drive unit to the conveying section, the drive chain having chain links and pins connecting the chain links;
the method comprising:
providing at least one of the pins as a force measuring pin configured for contactless transmission of mono-directional and multi-directional forces, including shear, acting on the pin to a background system;
registering the forces acting on the force measuring pin when the drive chain is moved;
wirelessly transmitting the registered forces from the force measuring pin to the background system together with at least one of a time stamp or a location stamp and an identity of the force measuring pin;
in the background system, subjecting data transmitted in the transmitting step to an analysis and, when deviations are detected, identifying the deviations as an anomaly and signaling the anomaly with a message.
2 . The method according to claim 1 , which comprises identifying the deviations by a statistical comparison with preceding registrations or by a comparison with a fixed value.
3 . The method according to claim 1 , which comprises continuously or almost continuously registering continuously the forces acting on the force measuring pin analogously or at a high sampling rate.
4 . The method according to claim 1 , wherein the force measuring pin is battery-operated or is supplied with current via cabling.
5 . The method according to claim 1 , wherein the force measuring pin comprises a shaft having a Wheatstone bridge for measuring shear deformation.
6 . The method according to claim 1 , which comprises transmitting status data of each force measuring pin, in addition to the registered forces.
7 . The method according to claim 6 , which comprises transmitting at least one of a remaining battery capacity or a temperature of the force measuring pin.
8 . The method according to claim 7 , which comprises, when a defined battery capacity is undershot or when a certain temperature is overshot, transmitting a corresponding a message.
9 . The method according to claim 1 , which comprises transmitting the data from the force measuring pin to the background system via a gateway, wherein the gateway is installed at a fixed location of the conveying system and a zero time is set at each maximum approach of the force measuring pin.
10 . In a conveyor system for transporting piece goods, the conveyor system comprising a revolving drive chain, a drive unit and a conveying section, wherein the drive chain serves for transmitting force and movement from the drive unit to the conveying section and the drive chain is formed with chain links and pins connecting the chain links, a system for identifying anomalies during an operation of the conveyor system comprising:
at least one of the pins being a force measuring pin configured for a contactless transmission of the mono-directional and multi-directional forces, including shear, acting on the at least one pin to a background system; and
said background system being configured to receive from said force measuring pin, by way of wireless transmission, forces acting on said force measuring pin during an operation when the drive chain is being moved, together with at least one of a time stamp or a location stamp and an identity of said force measuring pin; and
said background system being configured to subject data received from said force measuring pin via the wireless transmission to an analysis and, when deviations are detected, to identify the deviations as an anomaly and to signal the anomaly by way of a message.
11 . The system according to claim 10 , wherein the conveying section comprises lamellae forming a conveying surface, the drive unit and the drive chain are formed by a chain drive, and the drive chain is configured to pull the lamellae.
12 . The system according to claim 10 , wherein said force measuring pin is configured to continuously or almost continuously register the forces acting on it with high sampling rate and to transmit the forces to the background system.
13 . The system according to claim 10 , wherein said force measuring pin comprises a battery.
14 . The system according to claim 10 , wherein said force measuring pin is configured to be supplied with current via cabling.
15 . The system according to claim 10 , wherein said force measuring pin comprises a shaft with a Wheatstone bridge for measuring shear deformation.
16 . The system according to claim 10 , wherein said force measuring pin is configured for capturing status data and to transmit the captured status data to said background system.
17 . The system according to claim 16 , wherein the status data to be captured are at least one of a remaining battery capacity or a temperature of said force measuring pin.
18 . The system according to claim 16 , further comprising a gateway installed at a fixed location of the conveyor system for transmitting the registered data from the force measuring pin to the background system, and wherein said gateway is configured to set a zero time at each maximum approach of said force measuring pin.