US3908117A
Expired / Lapsed
US
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Method and apparatus for monitoring and diagnosing troubles in sequential control operations
Assignee: Toyoda Koki KK
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Filing: 1974-02-11
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Granted: 1975-09-23
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Expires: 1994-02-11
Abstract
Abstract A method and apparatus for monitoring and diagnosing troubles in sequential control operations. Cycle memorizing means respectively memorizes performed sequence cycles, and a timer is energized simultaneously with the start of the sequence cycles and is de-energized at the completion of the completed sequence cycles. The setting time of the timer is slightly longer than the time required to complete the completed sequence cycles and therefore, a diagnosis operation is performed in consideration of the memory in the cycle memory means when the timer times-out.
Inventors
- 👤 Katutoshi Naruse
- 👤 Kazuhiko Hasegawa
- 👤 Kazuo Matsuno
- 👤 Toshikiko Yomogida
- 👤 Hideyuki Sanpe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:00
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/07; G06F11/0703; G06F11/0751; G06F11/0754; G06F11/0757; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/05; G05B19/058; G05B2219/00; G05B2219/10; G05B2219/13; G05B2219/13039; G05B2219/14; G05B2219/14086; G05B2219/14112; Y; Y10; Y10T; Y10T408/00; Y10T408/16
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
112 words
Method for monitoring and diagnosing troubles in sequential control operations comprising the steps of: memorizing a predetermined machine sequence operation in a cycle memorizing means whenever each unit sequence cycle is performed, said maChine sequence having at least one unit sequence cycle; determining whether or not said predetermined machine sequence operation has completed within a predetermined time; searching a progressing end of said unit sequence cycle when said predetermined machine sequence operation has not completed within said predetermined time, indicating an abnormality; generating an abnormality signal indicating said progressing end; executing diagnosis programs selected in response to said abnormality signal for diagnosing machine portions suspected to have been troubled and causes thereof.
Claim 2
Dependent Claim
112 words
Method for monitoring and diagnosing troubles in sequential control operations comprising the steps of: memorizing a predetermined machine sequence operation in a cycle memorizing means whenever each unit sequence cycle is performed, said maChine sequence having at least one unit sequence cycle; determining whether or not said predetermined machine sequence operation has completed within a predetermined time; searching a progressing end of said unit sequence cycle when said predetermined machine sequence operation has not completed within said predetermined time, indicating an abnormality; generating an abnormality signal indicating said progressing end; executing diagnosis programs selected in response to said abnormality signal for diagnosing machine portions suspected to have been troubled and causes thereof.
Claim 3
Dependent Claim
186 words
Method for monitoring and diagnosing troubles in sequential control operations comprising the steps of: energizing a timer means simultaneously with a start of a predetermined machine sequence operation having at least one unit sequence cycle, a setting time of said timer means being longer by a predetermined short time than a nominal time needed to complete said predetermined machine sequence operation; memorizing each of said unit sequence cycles respectively in a cycle memorizing means in response to one of a start and a completion of said unit sequence cycle; de-energizing said timer means when said predetermined machine sequence operation has completed; determining a time-out of said timer means for testing whether or not said predetermined machine sequence operation has completed within said nominal time; searching a non-actuated cycle of said unit sequence cycles in accordance with a predetermined order when said timer means timed-out; generating an abnormality signal indicating a cycle number of said non-actuated cycle; executing diagnosis programs selected in accordance with said abnormality signal for diagnosing machine portions suspected to have been troubled and causes thereof; and indicating said portions troubled and causes thereof.
Claim 4
Dependent Claim
186 words
Method for monitoring and diagnosing troubles in sequential control operations comprising the steps of: energizing a timer means simultaneously with a start of a predetermined machine sequence operation having at least one unit sequence cycle, a setting time of said timer means being longer by a predetermined short time than a nominal time needed to complete said predetermined machine sequence operation; memorizing each of said unit sequence cycles respectively in a cycle memorizing means in response to one of a start and a completion of said unit sequence cycle; de-energizing said timer means when said predetermined machine sequence operation has completed; determining a time-out of said timer means for testing whether or not said predetermined machine sequence operation has completed within said nominal time; searching a non-actuated cycle of said unit sequence cycles in accordance with a predetermined order when said timer means timed-out; generating an abnormality signal indicating a cycle number of said non-actuated cycle; executing diagnosis programs selected in accordance with said abnormality signal for diagnosing machine portions suspected to have been troubled and causes thereof; and indicating said portions troubled and causes thereof.
Claim 5
Independent Claim
131 words
An apparatus for monitoring and diagnosing troubles in sequential control operations comprising; cycle memorizing means respectively memorizing a performance of each unit sequence cycle of a predetermined machine sequence operation; determination means for determinng whether or not said predetermined machine sequence operation has completed within a predetermined time; signal generating means for searching a non-actuation cycle of said unit sequence cycle when said predetermined machine sequence operation has not completed within said predetermined time and for generating an abnormality signal indicating a number corresponding to said non-actuated cycle; means for diagnosing at least one portion of portions suspected to have been troubled and causes thereof in accordance with said abnormality signal; and indication means for displaying at least one of said portions suspected to have been troubled and said causes thereof.
Claim 6
Independent Claim
131 words
An apparatus for monitoring and diagnosing troubles in sequential control operations comprising; cycle memorizing means respectively memorizing a performance of each unit sequence cycle of a predetermined machine sequence operation; determination means for determinng whether or not said predetermined machine sequence operation has completed within a predetermined time; signal generating means for searching a non-actuation cycle of said unit sequence cycle when said predetermined machine sequence operation has not completed within said predetermined time and for generating an abnormality signal indicating a number corresponding to said non-actuated cycle; means for diagnosing at least one portion of portions suspected to have been troubled and causes thereof in accordance with said abnormality signal; and indication means for displaying at least one of said portions suspected to have been troubled and said causes thereof.
Claim 7
Independent Claim
171 words
An apparatus for monitoring and diagnosing troubles in sequential control operations comprising; cycle memorizing means for respectively memorizing a performance of each unit sequence cycles of a predetermined machine sequence operation; timer means being energized simultaneously with a start of a predetermined machine sequence operation and de-energized by a completion of the same, a setting time of said timer being slightly longer than a nominal time required to complete said predetermined machine sequence operation and a time-out signal of said timer means indicating an occurrence of an abnormality; first control means for searching a non-actuated cycle of said unit sequence cycles in accordance with a predetermined order when said timer means timed-out, and generating an abnormality signal suggesting a cycle number of said non-actuated cycle; second control means for executing diagnosing programs selected in accordance with said abnormality signal for diagnosing at least one of causes and portions supposed to have been troubled; and indicating means for displaying at least one of said causes and portions susPected to have been troubled.
Claim 8
Independent Claim
171 words
An apparatus for monitoring and diagnosing troubles in sequential control operations comprising; cycle memorizing means for respectively memorizing a performance of each unit sequence cycles of a predetermined machine sequence operation; timer means being energized simultaneously with a start of a predetermined machine sequence operation and de-energized by a completion of the same, a setting time of said timer being slightly longer than a nominal time required to complete said predetermined machine sequence operation and a time-out signal of said timer means indicating an occurrence of an abnormality; first control means for searching a non-actuated cycle of said unit sequence cycles in accordance with a predetermined order when said timer means timed-out, and generating an abnormality signal suggesting a cycle number of said non-actuated cycle; second control means for executing diagnosing programs selected in accordance with said abnormality signal for diagnosing at least one of causes and portions supposed to have been troubled; and indicating means for displaying at least one of said causes and portions susPected to have been troubled.
Claim 9
Dependent Claim
31 words
An apparatus according to claim 4, further comprising means for prohibiting an additional generation of said abnormality signal when the same is once generated in one time-out of said timer means.
Claim 10
Dependent Claim
25 words
An apparatus according to claim 4, wherein said cycle memorizing means comprises a plurality of relays respectively memorizing a performance of each unit sequence cycle.
References Cited (Backward Citations)
US3599179A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |