Methods and systems for analyzing performance of a sorting system

• US 8,392,135 B2
• Filed: 08/12/2010
• Issued: 03/05/2013
• Est. Priority Date: 08/12/2010
• Status: Expired due to Fees

• Current Assignee: WestRock Shared Services, LLC (WestRock Company)
• Original Assignee: Smurfit-Stone Container Enterprises Incorporated (WestRock Company)
• Inventors: McClain, Stephen B., Schuster, James J., Byers, Ricky G., Adams, Gerald L.
• Primary Examiner(s): TSAI, CAROL S W
• Application Number:
  US12/855,576
• Publication Number:
  US 20120037547A1
• Time in Patent Office: 936 Days
• Field of Search: 702/128, 702/182, 702/187, 702/189, 209/3.1, 209/19, 209/659, 209/12.1, 209/617, 209/900, 209/645, 209/592, 209/584, 209/583, 700/224, 700/223, 700/216, 700/231, 700/227, 700/237, 705/29, 705/34, 705/39, 271/3, 271/14, 271/4.01
• US Class Current: 702/81
• CPC Class Codes: B07C 5/00 Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches sorting by hand only B07C7/00; separating solids from solids by sieving, screening, or sifting or by using gas currents or other separating by dry methods applicable to bulk material B07B
• CPC Class Codes: B07C 5/16 Sorting according to weight sorting eggs A01K43/00; weighing apparatus per se G01G
• CPC Class Codes: G01G 11/006 Special taring or checking devices therefor devices for determining tare weight in general G01G23/14
• CPC Class Codes: G01G 19/393 using two or more weighing units
• CPC Class Codes: G06Q 10/06 Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling

Abstract

A method for analyzing performance of a sorting system is provided. The method includes recording downtime experienced by the sorting system, recording runtime experienced by the sorting system, and recording an optimal characterization of a product stream to be sorted by the sorting system. The optimal characterization includes at least an optimal weight of a first commodity of the product stream. An actual characterization of the product stream as sorted by the sorting system is recorded. The actual characterization includes at least an actual weight of the first commodity sorted from the product stream. The method further includes determining the performance of the sorting system based on at least two of the downtime, the runtime, the optimal characterization, and the actual characterization.

Claims

1. A method for analyzing performance of a sorting system, said method comprising:

recording downtime experienced by the sorting system;

recording runtime experienced by the sorting system;

recording an optimal characterization of a product stream to be sorted by the sorting system, the optimal characterization including at least an optimal weight of a first commodity of the product stream;

recording an actual characterization of the product stream as sorted by the sorting system, the actual characterization including at least an actual weight of the first commodity sorted from the product stream; and

determining the performance of the sorting system based on at least two of the downtime, the runtime, the optimal characterization, and the actual characterization.

2. A method in accordance with claim 1, wherein a plurality of product streams are sorted by the sorting machine, and determining the performance of the sorting system comprises:

comparing a downtime and an actual characterization for a first product stream of the plurality of product streams with a downtime and an actual characterization for a second product stream of the plurality of product streams; and

determining whether the first product stream or the second product stream has a higher level of recovery based on the comparison.

3. A method in accordance with claim 1, wherein determining the performance of the sorting system comprises;

determining a scheduled time;

determining a ratio of the actual characterization with respect the scheduled time;

determining a ratio of the actual characterization with respect to the runtime; and

determining the performance based on the ratios.

4. A method in accordance with claim 3, further comprising:

determining a ratio of the optimal characterization with respect the scheduled time;

determining a ratio of the optimal characterization with respect to the runtime; and

comparing at least two of the ratios to determine the performance of the sorting system.

5. A method in accordance with claim 1, wherein the sorting system experiences a plurality of downtimes and a plurality of runtimes, said method further comprising:

recording shift information, operator information, and maintenance information associated with each downtime and each runtime; and

comparing the plurality of downtimes with respect to at least one of the shift information, the operator information and the maintenance information to determine the performance of the sorting system.

6. A method in accordance with claim 1 further comprising:

recording a number of hand picks with respect to time; and

determining the performance of the sorting system using at least the number of hand picks with respect to time.

7. A method in accordance with claim 1 further comprising:

determining a performance for each sorting system of a plurality of sorting systems; and

comparing the performances of the plurality of sorting systems with each other to facilitate increasing the performance of at least one sorting system of the plurality of sorting systems.

8. A sorting system comprising:

at least one sensor positioned within said sorting system;

a computer system coupled in communication with said at least one sensor to receive data from said at least one sensor, said computer system configured to;

record downtime experienced by said sorting system;

record runtime experienced by said sorting system;

record an optimal characterization of a product stream to be sorted by said sorting system, the optimal characterization including at least an optimal weight of a first commodity of the product stream;

record an actual characterization of the product stream as sorted by said sorting system, the actual characterization including at least an actual weight of the first commodity sorted from the product stream; and

determine the performance of said sorting system based on at least two of the downtime, the runtime, the optimal characterization, and the actual characterization.

9. A sorting system in accordance with claim 8, wherein said computer system comprising a monitoring system located within said sorting system.

10. A sorting system in accordance with claim 8, wherein said at least one sensor comprising at least one of a scale sensor, a motor sensor, and an eye sensor.

11. A sorting system in accordance with claim 8, wherein said computer system is configured to:

determine whether the data received from said at least one sensor indicates that at least a portion of said sorting system is experiencing the downtime;

when the received data indicates that at least a portion of said sorting system is experiencing downtime;

begin recording of the downtime; and

qualify the downtime; and

when the received data indicates that at least the portion of said sorting system has been enabled, said computer system is configured to end the recording of the downtime.

12. A sorting system in accordance with claim 8, wherein said computer system is configured to:

weigh the product stream as the product stream is fed into said sorting system; and

weigh the first commodity sorted from the product stream to determine the actual weight of the first commodity.