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Simplified Conveyor Control Technique for Multiple Conveyor Station Operation

IP.com Disclosure Number: IPCOM000061234D
Original Publication Date: 1986-Jul-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 2 page(s) / 50K

Publishing Venue

IBM

Related People

Overby, WA: AUTHOR

Abstract

Control of an object conveyor system, and the removal of the object being transferred by the conveyor, requires only one signal to be daisy chained between the multiple conveyor stations shown in Fig. 1. This signal tells each station if any downstream station has an empty object buffer. This description assumes that the objects being transferred by conveyor 10 can be serviced by any one of the stations (N-1, N, N+1, N+2) which are distributed along the conveyor. It is also assumed that each station has an object buffer to hold a number of the objects being conveyed. This buffer capacity may be as small as one. As an object approaches a conveyor-to-station transfer point (11, 12, 13, 14), that station must "decide" if it will accept the object, or allow the object to pass on to a succeeding station.

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Simplified Conveyor Control Technique for Multiple Conveyor Station Operation

Control of an object conveyor system, and the removal of the object being transferred by the conveyor, requires only one signal to be daisy chained between the multiple conveyor stations shown in Fig. 1. This signal tells each station if any downstream station has an empty object buffer. This description assumes that the objects being transferred by conveyor 10 can be serviced by any one of the stations (N-1, N, N+1, N+2) which are distributed along the conveyor. It is also assumed that each station has an object buffer to hold a number of the objects being conveyed. This buffer capacity may be as small as one. As an object approaches a conveyor-to-station transfer point (11, 12, 13,
14), that station must "decide" if it will accept the object, or allow the object to pass on to a succeeding station. This decision is based on two sources of information. The two sources are the condition of control line 15 and the condition of that station's local buffer. If the local buffer is empty, the station will accept the object, independent of the condition of the control line. If the local buffer is full, the station will not accept the product, also independent of the control line. If the local buffer is neither empty nor full, then the station will accept the object only if the control line indicates that there is no empty buffer downstream of the station. The implementation of the control line...