Integrated conveyor bed

• US 7,035,714 B2
• Filed: 01/26/2004
• Issued: 04/25/2006
• Est. Priority Date: 01/24/2003
• Status: Expired due to Fees

• Current Assignee: Dematic Corporation (KION GROUP AG)
• Original Assignee: Rapistan Systems Advertising Corporation (OSI Systems Incorporated)
• Inventors: Pelak, Wynn M., Affaticati, Artemio, Anderson, Keith W., LaFleur, David M., Schaum, Frank-Peter, Lubbers, Le Roy
• Primary Examiner(s): CRAWFORD, GENE O
• Application Number:
  US10/764,962
• Publication Number:
  US 20040195078A1
• Time in Patent Office: 820 Days
• Field of Search: 700/228, 700/112, 700/229, 700/230, 198/358, 198/349, 198/571, 198/572, 198/576, 198/577, 198/783, 198/784, 198/792, 198/781.05
• US Class Current: 700/228
• CPC Class Codes: B65G 13/02 having driven rollers
• CPC Class Codes: B65G 13/06 Roller driving means
• CPC Class Codes: B65G 2201/025 Boxes
• CPC Class Codes: B65G 2201/0264 Luggage
• CPC Class Codes: B65G 2203/044 Optical
• CPC Class Codes: B65G 37/02 Flow-sheets for conveyor combinations in warehouses, magazines or workshops
• CPC Class Codes: B65G 43/00 Control devices, e.g. for safety, warning or fault-correcting
• CPC Class Codes: B65G 43/08 Control devices operated by article or material being fed, conveyed or discharged and controlling the discharging devices B65G47/42
• CPC Class Codes: B65G 43/10 Sequence control of conveyors operating in combination
• CPC Class Codes: B65G 47/261 Accumulating articles

Abstract

A conveyor system, and method of controlling the conveyor system, includes providing a conveying surface, at least one motor propelling the conveying surface and a plurality of lower-level controllers. At least one of the lower-level controllers adapted to control the at least one motor. An upper-level controller is provided in communication with the plurality of lower-level controllers. The upper-level controller is adapted to send communications to the lower-level controllers for controlling the at least one motor. A communications bus is provided that carries the communications between the upper-level controller and the lower-level controllers. The upper-level controller is adapted to automatically assign each lower-level controller a unique communications address. The unique communications address enables the upper-level controller to send messages over the communications bus to individual ones of the lower-level controllers.

Claims

1. A conveyor system, comprising:

a plurality of conveyor beds, each said conveyor bed having a conveying surface and at least one motorized roller propelling said conveying surface;

at least some of said conveyor beds each comprising

a plurality of motor controllers, at least one of said plurality of motor controllers adapted to control said at least one motorized roller;

a sensor, said sensor adapted to detect the presence of an article load on said conveyor bed adjacent to said sensor and to communicate to said at least one motorized roller when the article load is detected by said sensor;

a conveyor bed controller in communication with said plurality of motor controllers, said conveyor bed controller adapted to send communications to said motor controllers for controlling said at least one motorized roller;

at least one of said conveyor beds comprising a routing component, said routing component operable for selectively directing articles in different directions from said routing component;

a master controller adapted to send and receive communications from said conveyor bed controllers for controlling said conveyor bed controllers, said motor controllers, and said routing components; and

a network that carries the communications between said master controller, said conveyor bed controllers, said motor controllers and said routing components;

wherein said master controller evaluates current operating state of said plurality of conveyor beds and said routing components;

wherein said master controller calculates a route for article loads at said plurality of conveyor beds based upon rules using flow and position of article loads at said plurality of conveyor beds and routing components;

wherein said master controller transmits a speed command based upon said route to said plurality of conveyor bed controllers over said network; and

wherein said conveyor bed controllers send said speed command to said at least one motorized roller to operate said at least one motorized roller at a speed based on said calculated route.

2. The system of claim 1 wherein:

said master controller transmits a route direction command for article loads to said plurality of conveyor bed controllers over said network;

said plurality of conveyor bed controllers send said route direction command to said at least one motorized roller; and

said at least one motorized roller controls a direction of said conveying surface according to said calculated route.

3. The system of claim 2 wherein:

said master controller tracks article load information of said plurality of conveyors beds and calculates a routing table for article loads in said plurality of routing components using article destination information, load priority and available routing directions;

said master controller transmits a routing table speed command to a plurality of routing component controllers over said network; and

said routing component controllers sending said routing table speed command setting to a routing component motor controller to operate routing component at the speed based on said calculated routing table.

4. The system of claim 3 wherein:

said master controller transmits a routing table direction command to said plurality of routing component controllers over said network; and

said routing component controllers send said routing table direction command to said associated routing component motor controllers to control the direction of said routing component according to said routing table.

5. The system of claim 4 wherein:

said sensors of said routing components identifies an article load destination information;

said master controller evaluates flow and position of article loads in said plurality of conveyor beds and said routing components to select a routing component route from said routing table; and

said master controller controls the direction of said routing component according to said route.

6. The system of claim 5 wherein said master controller adjusts the speed and the direction of said conveyor beds associated with said routing component route.

7. The system of claim 6 wherein:

said master controller transmits a function command over said network to said plurality of bed controllers and said routing components;

said plurality of bed controllers and said routing components download said function command; and

said master controller dynamically controls the direction and the speed of said plurality of bed controllers and said routing components based upon said function command.

8. The system of claim 7 wherein said function command comprises a slug accumulation function program.

9. The system of claim 7 wherein said function command comprises a singulation accumulation function program.

10. The system of claim 7 wherein said function command comprises a reverse slug accumulation function program.

11. The system of claim 7 further comprising:

a user interface with visualization coupling with said master controller;

wherein said user interface provides a visual display of diagnostic information, flow information and status information in said plurality of conveyor beds and said routing components.

12. The system of claim 11 wherein said user interface controls the speed and the direction of said plurality of bed controllers and said routing components through said master controller.

13. The system of claim 12 wherein said user interface controls said master controller instantaneously.

14. The system of claim 12 wherein said user interface controls said master controller with a delay.