Detection system
AssigneeMetso Sweden AB
InventorClaes Larsson
Life of this patent
Estimating the term…
Abstract
The invention relates to a detection system in a screening device for screening material, e.g. aggregate, ore or similar, comprising at least one screening decks, the at least one screening deck having a screening surface comprising one or more screening modules. The system comprises a sensor arranged at or near at least one screening deck of the screening device. The sensor is arranged such that it can detect objects present leaving the at least one screening deck. The invention also relates to a method for detection of objects in a screening device, and use of the detection system.
Claims20
A detection system for use in a screening device for screening material, the screening device including at least one screening deck, the at least one screening deck having a screening surface, the system comprising:
- an ultrasound sensor arranged at or near the least one screening deck of the screening device, the ultrasound sensor having a sensing range such that the ultrasound sensor is operable to detect objects leaving the at least one screening deck that are in the sensing range;
- and
- a control unit in communication with the ultrasound sensor to receive signals from the ultrasound sensor based on the detection of objects leaving the at least one screening deck that are in the sensing range,
- wherein the control unit is operable to apply one or more predefined threshold values that are based on a time an object is present in the sensing range of the ultrasound sensor to differentiate between signals resulting from the material to be screened and signals resulting from a foreign object.
A detection system for use in a screening device for screening material, which screening device comprises at least one screening deck, the at least one screening deck having a screening surface, the detection system comprising:
- an ultrasound sensor arranged at or near a discharge end of the at least one screening deck of the screening device,
- wherein the sensor is arranged such that it can detect objects leaving the discharge end of the at least one screening deck, and
- wherein the ultrasound sensor is arranged to detect objects present outside a predefined area adjacent to the discharge end of the at least one screening deck.
Dependencies are inferred from the claim text.