Coin redemption machine having gravity feed coin input tray and foreign object detection system

• US 7,886,890 B2
• Filed: 06/11/2003
• Issued: 02/15/2011
• Est. Priority Date: 06/14/2002
• Status: Active Grant

• Current Assignee: Cummins-Allison Corporation (Crane Company)
• Original Assignee: Cummins-Allison Corporation (Crane Company)
• Inventors: Lykowski, John S., Blake, John R., Long, Arthur J., Collura, Samuel F., Mennie, Douglas U.
• Primary Examiner(s): SHAPIRO, JEFFERY A
• Application Number:
  US10/459,649
• Publication Number:
  US 20030234153A1
• Time in Patent Office: 2,806 Days
• Field of Search: 181/101, 181/5, 194/347, 194200-204, 194/327, 194/328, 194/345, 194/348, 453/2, 453/16, 453/17, 700/240
• US Class Current: 194/347
• CPC Class Codes: G07D 3/128 Rotary devices
• CPC Class Codes: G07D 3/16 in combination with coin-counting
• CPC Class Codes: G07D 5/00 Testing specially adapted to determine the identity or genuineness of coins, e.g. for segregating coins which are unacceptable or alien to a currency
• CPC Class Codes: G07D 9/008 Feeding coins from bulk
• CPC Class Codes: G07F 1/041 with means, other than for testing currency, for dealing with inserted foreign matter, e.g. "stuffing", "stringing" or "salting"

Abstract

According to one embodiment of the present invention, a coin processing system includes a coin input area that receives coins from a user, a coin processing module that counts the received coins, and a foreign object detection system that detects a foreign object within the coin processing module subsequent to counting substantially all the received coins.

Claims

1. A coin processing system, comprising:

a coin input area configured to receive coins from a user;

a coin processing module configured to count the received coins; and

a foreign object detection system comprising a microphone adapted to generate a sound level signal indicative of the amount of sound in the coin processing module, a memory storing master ambient sound level data for the coin processing module, and a controller electronically coupled to the microphone and the memory, the controller comparing the sound level signal generated by the microphone to the stored master ambient sound level data, the foreign object detection system being configured to detect, based on the comparison, a foreign object within the coin processing module subsequent to counting of all of the received coins.

2. The coin processing system of claim 1 wherein the foreign object detection system alerts the user of the presence of a detected foreign object.

3. The coin processing system of claim 1 wherein the controller generates a foreign object detection signal when the sound level signal does not favorably compare to the stored master ambient sound level data.

4. The coin processing system of claim 1 wherein the coin processing system is a coin-redemption-type coin-processing system.

5. The coin processing system of claim 1 wherein the foreign object detection system comprises a vacuum system having an inlet disposed in the coin processing module, the vacuum system being configured to remove foreign objects from the coin processing module.

6. The coin processing system of claim 5 further comprising a user-accessible area, wherein the vacuum system pulls the foreign objects into the user-accessible area.

7. The coin processing system of claim 1 wherein the coin input area comprises a gravity feed coin input tray.

8. The coin proceeding system of claim 7 wherein the gravity feed tray includes a bowl-shaped portion for receiving coins, an aperture for directing coins to the coin processing module, and a hood spaced from and disposed over the aperture.

9. The coin processing system of claim 8 wherein the hood is pivotally coupled to the bowl-shaped portion, the hood pivoting from a first position where the hood is disposed over the aperture to a second position for providing the user access to an interior portion of said coin processing module.

10. The coin processing system of claim 9 wherein the coin processing module suspends operation when the hood is pivoted to the second position.

11. A coin processing system, comprising:

a coin input area configured to receive a batch of coins from a user;

a rotatable disk including a resilient pad configured to impart motion to the received coins;

a sorting head having a lower surface generally parallel to and spaced slightly from said resilient pad of said disk, said lower surface of said sorting head forming a plurality of coin exit channels configured to sort and discharge coins of different denominations;

at least one microphone disposed proximate the rotatable disk, the at least one microphone being configured to detect sound around the rotatable disk subsequent to processing of said batch of coins and to generate a sound level signal indicative of said detected sound;

a memory storing master ambient sound level data for the coin processing module; and

a controller operatively coupled to the microphone and the memory, the controller being configured to compare the sound level signal generated by the microphone to the stored master ambient sound level data to detect a presence of a foreign object proximate said rotatable disk, the controller being further configured to output a signal relating to the comparison when the sound level signal does not compare to the stored master ambient sound level data.

12. The coin processing system of claim 11 wherein the controller suspends the rotation of the rotatable disk upon generation of a foreign object detection signal.

14. The coin processing system of claim 11 wherein the coin input area comprises:

a gravity-feed coin input tray having a bowl-shaped body with an aperture formed therein towards a bottom of the bowl-shaped body, the bowl-shaped body having an interior surface for funneling coins towards the aperture, the aperture discharging coins onto the rotatable disk; and

a hood disposed over the aperture in the base of the bowl-shaped body, the hood being spaced from the interior surface of the bowl-shaped body.

15. The coin processing system of claim 14 wherein the hood is moveable from a first position wherein the hood is disposed over the aperture to a second position wherein the hood is upwardly rotated away from the aperture.

19. The coin processing system of claim 11 wherein the coin processing system is a coin-redemption-type coin-processing system.

20. The coin processing system of claim 11 wherein the at least one microphone includes a plurality of microphones.

21. The coin processing system of claim 11, further comprising:

at least one coin counting sensor configured to count coins discharged from the coin exit channels, the at least one coin counting sensor generating a signal indicative of the passage of a coin;

wherein said at least one microphone is disposed within the coin input area, and

wherein the controller is operatively coupled to the at least one coin counting sensor, the controller receiving a first signal indicative of the passage of a coin from the at least one coin counting sensor, the controller comparing the sound level signal generated by the microphone to the stored master ambient sound level data when no subsequent signal is received from the at least one coin counting sensor within a predetermined amount of time after receipt of the first signal to determine if any foreign objects remain in the coin input area.

22. The coin processing system of claim 21 wherein the predetermined amount of time is between about five seconds and about ten seconds.

13. A coin processing system comprising:

a coin input area configured to receive a plurality of coins from a user;

a rotatable disk including a resilient pad configured to impart motion to the received plurality of coins;

a sorting head having a lower surface generally parallel to and spaced slightly from said resilient pad of said disk, said lower surface of said sorting head forming a plurality of coin exit channels configured to sort and discharge coins of different denominations;

at least one microphone disposed proximate the rotatable disk, the at least one microphone being configured to detect sound around the rotatable disk and to generate a sound level signal indicative of said detected sound;

a memory storing master ambient sound level data;

a controller operatively coupled to the microphone and the memory, the controller being configured to compare the sound level signal generated by the microphone to the stored master ambient sound level data to detect a presence of a foreign object proximate said rotatable disk, the controller being further configured to output a signal indicating the presence of a foreign object when the sound level signal does not compare to the stored master ambient sound level data; and

a diverting structure coupled to the sorting head, the diverting structure being movable between a first position, wherein the diverting structure is substantially flush with a lower surface of the sorting head, and a second position, wherein the diverting structures extends downward from the lower surface of the sorting head, impacting coins and non-coin objects, and directing the coins and non-coin objects towards a center of the pad.

16. A coin processing system comprising:

a coin input area configured to receive a plurality of coins from a user;

a rotatable disk including a resilient pad configured to impart motion to the received plurality of coins;

a sorting head having a lower surface generally parallel to and spaced slightly from said resilient pad of said disk, said lower surface of said sorting head forming a plurality of coin exit channels configured to sort and discharge coins of different denominations;

at least one microphone disposed proximate the rotatable disk, the at least one microphone being configured to detect sound around the rotatable disk and to generate a sound level signal indicative of said detected sound;

a memory storing master ambient sound level data;

a controller operatively coupled to the microphone and the memory, the controller being configured to compare the sound level signal generated by the microphone to the stored master ambient sound level data to detect a presence of a foreign object proximate said rotatable disk, the controller being further configured to output a signal indicating the presence of a foreign object when the sound level signal does not compare to the stored master ambient sound level data;

a gravity-feed coin input tray having a bowl-shaped body with an aperture proximate a bottom of the bowl-shaped body, the bowl-shaped body having an interior surface configured to funnel coins towards the aperture, the aperture discharging coins onto the rotatable disk;

a hood disposed over the aperture in the bowl-shaped body, the hood being spaced from the interior surface of the bowl-shaped body, the hood being moveable from a first position, wherein the hood is disposed over the aperture, to a second position, wherein the hood is upwardly rotated away from the aperture; and

a switch configured to detect the position of the hood, wherein the controller is operatively coupled to the switch to thereby monitor the position of the hood.

17. The coin processing system of claim 16 wherein the controller suspends the rotating of the disk when the hood is not in the first position.

18. The coin processing system of claim 17 wherein the controller resumes the rotating of the disk when the hood is returned to the first position.

23. A coin processing system, comprising:

a coin input area configured to receive a batch coins from a user;

a rotatable disk including a resilient pad configured to impart motion to the coins in the received batch of coins;

a sorting head having a lower surface generally parallel to and spaced slightly from said resilient pad of said disk, said lower surface of said sorting head forming a plurality of coin exit channels configured to sort and discharge coins of different denominations;

at least one microphone disposed proximate the rotatable disk, the at least one microphone being configured to detect sound around the rotatable disk subsequent to the processing of said batch of coins and to generate a sound level signal indicative of said detected sound;

a memory storing master ambient sound level data for the coin processing module; and

a controller operatively coupled to the microphone and the memory, the controller being configured to compare the sound level signal generated by the microphone to the stored master ambient sound level data to detect a presence of a solid foreign object proximate said rotatable disk, the controller being further configured to output a signal relating to the comparison when the sound level signal exceeds a predetermined foreign object sound level signal threshold.

24. A coin processing system according to claim 23, wherein the controller outputs the signal relating to the comparison when the sound level signal exceeds an ambient level by greater than about twenty percent.

25. A coin processing system according to claim 23, wherein the controller outputs the signal relating to the comparison only when the sound level signal exceeds a predetermined foreign object threshold subsequent to a completion of coin sorting.

26. A method for detecting the presence of foreign objects in a coin processing machine, the method comprising the acts of:

receiving, in a coin input area of the coin processing machine, a plurality of coins to be processed;

counting said received coins using a coin processing module comprising at least one coin sensor; and

monitoring using a microphone, subsequent to completion of said act of counting said plurality of coins, a sound level within the coin processing module to detect sound generated by solid foreign objects within the coin processing module following a lapse of a predetermined amount of time after no coins have been sensed by a coin processing module coin sensor.

27. A method for detecting foreign objects in a coin processing machine, the method comprising the acts:

receiving, in a coin input area of the coin processing machine, a plurality of coins to be processed;

totaling a value of said received coins using a coin processing module comprising at least one coin sensor; and

monitoring using a microphone the coin processing module for the presence of a solid foreign object within the coin processing module subsequent to completion of said act of totaling, said completion being defined by a lapse of a predetermined amount of time after no coins have been sensed by a coin processing module coin sensor.

28. A coin processing system, comprising:

a coin input area configured to receive a plurality of coins from a user;

a rotatable disk including a resilient pad configured to impart motion to the received plurality of coins;

a sorting head having a lower surface generally parallel to and spaced slightly from said resilient pad of said disk, said lower surface of said sorting head forming a plurality of coin exit channels configured to sort and discharge coins of different denominations;

at least one microphone disposed proximate the rotatable disk, the at least one microphone being configured to detect sound around the rotatable disk and to generate a sound level signal indicative of said detected sound;

at least one coin sensor disposed along a coin path to sense coins;

a memory storing master ambient sound level data for the coin processing module; and

a controller operatively coupled to the microphone and the memory, the controller being configured to, following a lapse of a predetermined amount of time after no coins have been sensed by the at least one coin sensor, compare the sound level signal generated by the microphone to the stored master ambient sound level data to detect a presence of a solid foreign object proximate said rotatable disk and output a signal relating to the comparison when the sound level signal exceeds a predetermined foreign object sound level signal threshold.

29. A coin processing system according to claim 28, wherein the controller is configured to output said signal relating to the comparison when the sound level signal exceeds an ambient level by greater than about twenty percent.

30. A coin processing system according to claim 28, wherein the controller outputs the signal relating to the comparison only when the sound level signal exceeds a predetermined foreign object threshold subsequent to a completion of coin sorting.

31. A coin processing system according to claim 28, wherein said at least one coin sensor comprises a coin discrimination sensor or a coin trigger sensor.

32. A coin processing system according to claim 31, wherein at least one of said coin discrimination sensor or said coin trigger sensor is disposed in a queuing channel.

33. A coin processing system according to claim 32, wherein said predetermined amount of time is between about five to ten seconds.

34. A coin processing system according to claim 33, wherein said stored master ambient sound level data corresponds to an operating state wherein no coins or foreign objects are disposed on the resilient pad.

35. A method for detecting the presence of foreign objects in a coin processing system, the method comprising the acts of:

receiving a plurality of coins to be processed from a user in a coin input area of a coin processing machine;

processing said received coins with a coin processing module of the coin processing machine;

determining, using a controller, whether all of said received coins have been processed;

monitoring using a microphone, subsequent to processing of all of said received coins, a sound level within the coin processing module to detect sound generated by solid foreign objects within the coin processing module, and

outputting a foreign object detection signal corresponding to the detected foreign object,

wherein said act of determining comprises monitoring an output of a coin sensor disposed in a coin path.

36. A method for detecting the presence of foreign objects in a coin processing system according to claim 35, wherein said act of determining comprises monitoring an output of a coin sensor disposed in a coin queuing channel.

37. A method for detecting the presence of foreign objects in a coin processing system according to claim 36, wherein said controller is configured to, following an absence of any signal from said coin sensor for a predetermined time period, initiate said act of monitoring.

38. A method for detecting the presence of foreign objects in a coin processing system according to claim 37, wherein said predetermined time period comprises a period of between about five and ten seconds.

39. A method for detecting the presence of foreign objects in a coin processing system according to claim 35, further comprising:

suspending operation of said coin processing system responsive to said foreign object detection signal.

40. A coin processing system, comprising:

a coin input area for receiving a plurality of coins from a user and outputting said coins into a coin hopper;

a rotatable disk including a resilient pad for imparting motion to the received plurality of coins;

a sorting head having a lower surface generally parallel to and spaced slightly from said resilient upper surface of said disk, said lower surface of said sorting head forming a plurality of coin exit channels for sorting and discharging coins of different denominations;

at least one microphone disposed proximate the rotatable disk for detecting sound around the rotatable disk and for generating a sound level signal indicative of said detected sound;

at least one coin sensor disposed along a coin path to sense coins;

a vacuum system having an inlet disposed in said coin hopper to remove foreign objects from the coin hopper;

a memory storing master ambient sound level data for the coin processing module; and

a controller electronically coupled to the microphone and the memory, the controller being configured to, following a lapse of a predetermined amount of time after no coins have been sensed by the at least one coin sensor, compare the sound level signal generated by the microphone to the stored master ambient sound level data to detect a presence of a solid foreign object proximate said rotatable disk and output a foreign object detection signal relating to the comparison when the sound level signal exceeds a predetermined foreign object threshold.

41. A coin processing system according to claim 40, wherein the controller is configured to slow a rotational speed of said rotatable disk responsive to said foreign object detection signal and activate said vacuum system to pull the foreign object into the vacuum system inlet.