Work-in-process management control method, work-in-process management control system, and non-transitory computer readable storage medium

Patent metadata

Field	Value
Publication number	US-10317889-B2
Application number	US-201715681840-A
Country	US
Kind code	B2
Filing date	Aug 21, 2017
Priority date	Nov 30, 2016
Publication date	Jun 11, 2019
Grant date	Jun 11, 2019

Abstract

The present disclosure relates to a work-in-process management control method and a work-in-process management control system using the work-in-process management control method. The work-in-process management control method includes: receiving, from first process devices that execute a first process, an out-of-process request for work-in-process; determining whether a second process corresponding to the out-of-process request is a process subjected to control; in the case where the second process is not a process subjected to control, shifting out the work-in-process in response to the out-of-process request; in the case where the second process is a process subjected to control, determining whether a current quantity of the work-in-process in use for the second process exceeds a control threshold in the second process; and in the case where the current quantity of the work-in-process in use for the second process exceeds a control threshold in the second process, stopping responding to the out-of-process request.

First claim

What is claimed is:

1. A work-in-process management control method, comprising:
receiving, from first process devices that execute a first process, an out-of-process request for work-in-process;
determining whether a second process corresponding to the out-of-process request is a process subjected to control;
in the case where the second process is not a process subjected to control, shifting out the work-in-process in response to the out-of-process request;
in the case where the second process is a process subjected to control, determining whether a current quantity of the work-in-process in use for the second process exceeds a control threshold in the second process; and
in the case where the current quantity of the work-in-process in use for the second process exceeds a control threshold in the second process, stopping responding to the out-of-process request.

2. The work-in-process management control method according to claim 1 , wherein the control threshold is a product of a device quantity of second process devices used to execute the second process and a maximum work-in-process quantity of the work-in-process allocated for each of the second process devices in a corresponding supply reservoir.

3. The work-in-process management control method according to claim 1 , wherein the current quantity of the work-in-process in use for the second process is a quantity of the work-in-process in use for the second process in the supply reservoir.

4. The work-in-process management control method according to claim 2 , wherein the current quantity of the work-in-process in use for the second process is a quantity of the work-in-process in use for the second process in the supply reservoir.

5. The work-in-process management control method according to claim 1 , wherein in the case where a current quantity of the work-in-process in use for the second process does not exceed a control threshold in the second process, the work-in-process management control method further comprises:
determining whether a current quantity of the work-in-process in use for a process associated with the second process exceeds a control threshold in the process associated,
in the case where a current quantity of the work-in-process in use for a process associated with the second process exceeds a control threshold in the process associated, stopping responding to the out-of-process request.

6. The work-in-process management control method according to claim 2 , wherein in the case where a current quantity of the work-in-process in use for the second process does not exceed a control threshold, the work-in-process management control method further comprises:
determining whether a current quantity of the work-in-process in use for a process associated with the second process exceeds a control threshold in the process associated,
in the case where a current quantity of the work-in-process in use for a process associated with the second process exceeds a control threshold in the process associated, stopping responding to the out-of-process request.

7. The work-in-process management control method according to claim 1 , wherein when shifting out the work-in-process in response to the out-of-process request, the work-in-process management control method further comprises:
determining whether a storage quantity of the work-in-process in a plurality of supply reservoirs into which the work-in-process is to be shifted reaches a storage threshold, and
shifting the work-in-process into a supply reservoir having the smallest storage quantity among the plurality of supply reservoirs in which the storage quantity of the work-in-process does not reach the storage threshold,
wherein the storage threshold is a product of a device quantity of the second process devices used to execute the second process and an optimized storage quantity of the work-in-process allocated for each of the second process devices in a corresponding supply reservoir.

8. The work-in-process management control method according to claim 2 , wherein when shifting out the work-in-process in response to the out-of-process request, the work-in-process management control method further comprises:
determining whether a storage quantity of the work-in-process in a plurality of supply reservoirs into which the work-in-process is to be shifted reaches a storage threshold, and
shifting the work-in-process into a supply reservoir having the smallest storage quantity among the plurality of supply reservoirs in which the storage quantity of the work-in-process does not reach the storage threshold,
wherein the storage threshold is a product of a device quantity of the second process devices used to execute the second process and an optimized storage quantity of the work-in-process allocated for each of the second process devices in a corresponding supply reservoir.

9. A work-in-process management control system, comprising:
a plurality of process devices each of which is configured to execute a corresponding process;
a work-in-process shifting device configured to execute shifting of work-in-process among the plurality of process devices;
a control device configured to control receipt of an out-of-process request from the plurality of process devices, and control the work-in-process shifting device to execute shifting of the work-in-process, wherein
the control device receives, from first process devices that execute a first process among the plurality of process devices, an out-of-process request for the work-in-process;
the control device determines whether a second process corresponding to the out-of-process request is a process subjected to control;
in the case where the second process is not a process subjected to control, the control device controls the work-in-process shifting device to shift out the work-in-process in response to the out-of-process request;
in the case where the second process is a process subjected to control, the control device determines whether a current quantity of the work-in-process in use for the second process exceeds a control threshold in the second process; and
in the case where the current quantity of the work-in-process in use for the second process exceeds a control threshold in the second process, the control device controls the work-in-process shifting device to stop responding to the out-of-process request.

10. The work-in-process management control system according to claim 9 , wherein the control threshold is a product of a device quantity of second process devices used to execute the second process and a maximum work-in-process quantity of the work-in-process allocated for each of the second process devices in a corresponding supply reservoir.

11. The work-in-process management control system according to claim 9 , wherein the current quantity of the work-in-process in use for the second process is a quantity of the work-in-process in use for the second process in the supply reservoir.

12. The work-in-process management control system according to claim 10 , wherein the current quantity of the work-in-process in use for the second process is a quantity of the work-in-process in use for the second process in the supply reservoir.

13. The work-in-process management control system according to claim 9 , wherein in the case where a current quantity of the work-in-process in use for the second process does not exceed a control threshold in the second process, the control device further determines whether a current quantity of the work-in-process in use for a process associated with the second process exceeds a control threshold in the process associated,
in the case where a current qua

Assignees

• Boe Technology Group Co Ltd
• Chongqing Boe Optoelectronics Tech Co Ltd

Inventors

• An Junfeng
• Li Xuanbiao
• Yoon Sung Hwan

Classifications

• G05B2219/31372

  Mes manufacturing execution system · CPC title

• Y02P90/20

  Cross-Sectional Technologies · mapped topic

• Y02P90/12

  Cross-Sectional Technologies · mapped topic

• G05B19/41815

  characterised by the cooperation between machine tools, manipulators and conveyor or other workpiece supply system, workcell · CPC title

• G05B2219/32254

  Work sequence, alternative sequence · CPC title