Foreign body detecting
AssigneeNCR Corporation
InventorJim Henderson
Life of this patent
Estimating the term…
Abstract
A self-service terminal has a fascia 1. A transmitter 18 sends a chirped ultrasonic pulse across a region R of the fascia. The pulse interacts with the region R and the region R responds by emitting an output. A receiver 20 receives the output and produces an electrical signal corresponding to the output. A frequency analysing module 24 transforms the electrical signal into a frequency response.
Claims15
A self-service terminal comprising:
- a fascia;
- a transmitter sending a chirped ultrasonic pulse across a region of the fascia;
- wherein the pulse interacts with the region and the region responds by emitting an output;
- a receiver receiving the output and producing an electrical signal corresponding to the output;
- and,
- an analysing module including a frequency domain analysing function transforming the electrical signal into a frequency response.
A method of detecting foreign bodies at a self-service terminal, the method comprising:
- sending a chirped ultrasonic pulse across a region of a fascia of the terminal so that the pulse interacts with the region and the region responds by emitting an output;
- receiving the output;
- producing an electrical signal corresponding to the output;
- and,
- analysing the electrical signal including making a frequency domain analysis involving transforming the electrical signal into a frequency response.
A method according to claim 12, further comprising determining a baseline frequency response in the absence of foreign bodies and subsequently comparing a determined frequency response with the baseline response.
Dependencies are inferred from the claim text.