[특허]Method and apparatus for analyzing and recording downtime of a manufacturing process

[미국특허] Method and apparatus for analyzing and recording downtime of a manufacturing process 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G06F-015/46
출원번호	US-0048155 (1993-04-15)
발명자 / 주소	Hoste Stephen A. (Royal Oak MI)
출원인 / 주소	Square D Company (Palatine IL 02)
인용정보	피인용 횟수 : 25 인용 특허 : 0

초록 ▼

A method and apparatus records downtime and the probable cause of the downtime of a network of programmable logic controllers and other microprocessor based devices for controlling of a manufacturing process. The method and apparatus also records the total downtime by separate causes and a total downtime of all causes encountered. The apparatus further records the number of times each cause occurred and a total number of all causes encountered. A graphical display provides a visual presentation of the number of times each cause occurred and the total downtime for each cause that occurred in Pareto chart form. The method provides for prioritizing alarms associated with the cause of a downtime and the apparatus has means for deciding which alarm notification, based on the alarm priority and therefore, its corresponding cause, recorded the most number of times it caused a downtime.

대표청구항 ▼

An operator interface module connected to a network of programmable logic controllers and other microprocessor based devices controlling a manufacturing process, said operator interface module for analyzing and recording downtime of said manufacturing process, and said operator interface module comprising: a. a network interface module for connecting to said network; b. a control processor; c. a communications processor connected between said network interface module and said control processor, said communications processor for controlling communications between said operator interface module and said network of programmable logic controllers and other microprocessor based devices; d. memory means accessible by said communications processor and said control processor; e. an alarm handler connected to said control processor, said alarm handler for receiving a plurality of alarms from said network indicative of a downtime event of said manufacturing process, for determining which of said plurality of alarms caused said downtime event, and for determining an elapsed time of said downtime event; f. alarm data registers accessible by said alarm handler and said control processor, said alarm data registers for storing data by said alarm handler related to said downtime event for each of said plurality of received alarms; g. display means connected to said control processor; h. keyboard entry means connected to said control processor; i. wherein said control processor accesses said data stored in said alarm data registers and provides first and second data summary tables in said memory means, said first summary table for storing data based on total number of downtime incidents for each of said plurality of alarms and said second summary table for storing data based on total elapsed time of downtime incidents for each of said plurality of alarms; and j. wherein said first and second summary tables are directly accessible by said network of programmable logic controllers and other microprocessor based devices.

이 특허를 인용한 특허 (25) 인용/피인용 타임라인 분석

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A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
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[미국특허] Method and apparatus for analyzing and recording downtime of a manufacturing process 원문보기

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