System and method for monitoring the condition of a conveyor belt
First Claim
1. A system for monitoring a condition of a conveyor belt arranged to rotate about at least a drive pulley and an idler pulley, where an electrical motor is arranged to drive the drive pulley, the system comprising:
- at least one data processing unit;
at least one sensor unit arranged to determine at least one sensor signal representing at least one operating variable of an electrical motor, the at least one data processing unit being configured to;
derive from the at least one sensor signal at least one corresponding time dependent data signal;
detect irregularities in the at least one data signal which indicate that a splice region of a conveyor belt passes the drive pulley and/or the idler pulley;
determine from a change in shape or frequency of the irregularities whether a condition of the conveyor belt has changed; and
send a monitoring output signal which reflects a change in the condition of the conveyor belt to at least one of a display unit, a storage unit and/or a decision making unit.
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Accused Products
Abstract
A system and a method are disclosed for monitoring a condition of a conveyor belt arranged to rotate about at least a motor drive pulley and an idler pulley. A sensor unit can determine at least one sensor signal representing at least one operating variable of the electrical motor. A data processing unit can derive from the sensor signal at least one corresponding time dependent data signal, to detect irregularities in the data signal which indicate that a splice region of the conveyor belt passes the drive pulley and/or the idler pulley, to determine from a change in shape or in frequency of the irregularities, whether the condition of the conveyor belt has changed, and to send a signal which reflects a change in the condition of the conveyor belt to at least one of a display unit, a storage unit and/or a decision making unit.
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Citations
20 Claims
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1. A system for monitoring a condition of a conveyor belt arranged to rotate about at least a drive pulley and an idler pulley, where an electrical motor is arranged to drive the drive pulley, the system comprising:
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at least one data processing unit; at least one sensor unit arranged to determine at least one sensor signal representing at least one operating variable of an electrical motor, the at least one data processing unit being configured to; derive from the at least one sensor signal at least one corresponding time dependent data signal; detect irregularities in the at least one data signal which indicate that a splice region of a conveyor belt passes the drive pulley and/or the idler pulley; determine from a change in shape or frequency of the irregularities whether a condition of the conveyor belt has changed; and send a monitoring output signal which reflects a change in the condition of the conveyor belt to at least one of a display unit, a storage unit and/or a decision making unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 19, 20)
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14. A method for monitoring the condition of a conveyor belt, where the conveyor belt is arranged to rotate about at least a drive pulley and an idler pulley and where an electrical motor is arranged to drive the drive pulley, the method comprising:
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determining at least one sensor signal representing at least one operating variable of the electrical motor; deriving from the at least one sensor signal at least one corresponding time dependent data signal; detecting irregularities in the at least one data signal which indicate that a splice region of the conveyor belt passes the drive pulley and/or the idler pulley; determining from a change in shape or in points in time of the irregularities whether a condition of the conveyor belt has changed; and sending a monitoring output signal which reflects a change in the condition of the conveyor belt to at least one of a display unit, a storage unit and/or a decision making unit.
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Specification