US3829668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double unit control device
Assignee: Hitachi Ltd
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Filing: 1972-12-01
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Granted: 1974-08-13
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Expires: 1992-12-01
Abstract
Abstract In a double unit control device comprising a pair of information input units, a pair of arithmetical processing units and a pair of output units, each of the arithmetical processing units processes the input information from the corresponding input unit in accordance with a predetermined algorithm, exchanges during the process the intermediate processed result in the processing unit for that of the other processing unit so as to collate them with each other, has a self-diagnosing function diagnosing the fault in the corresponding output unit by obtaining the feedback signal from the output unit, and produces a signal for indicating a fault when the fault is detected.
Inventors
- 👤 M Noumi
- 👤 S Seki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:32
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/07; G06F11/16; G06F11/1629; G06F11/1654; B; B61; B61L; B61L15/00; B61L15/0094; G05; G05B; G05B9/00; G05B9/02; G05B9/03; G06F11/0703; G06F11/0751; G06F11/1633; G06F11/165
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
289 words
A mobile object control device of the dual type comprising at least one input unit for receiving signals and providing an output indicative thereof, first and second computer processing unit means connected with each other for exchanging information therein with each other for the purpose of collation, said first and second computer processing unit means each being connected to said input unit for producing a signal for controlling a mobile object in response to the output received from said input unit, first and second trouble-shooting unit means connected respectively to said first and second computer processing unit means for diagnosing faults in the object control device, each of said trouble-shooting unit means providing an error signal for indicating a fault in response to the detection of a fault by said trouble-shooting unit means, first and second output units connected respectively to said first and second computer processing unit means and to said first and second troubleshooting means, each of said output units providing an output signal in accordance with the output of the associated computer processing unit means and including a relay switch for interrupting the output signal of said computer processing unit means in response to the error signal from said trouble-shooting unit means, first and second feedback lines connected respectively between said first output unit and said first computer processing unit means and between said second output unit and said second computer processing unit means, said first and second trouble-shooting unit means diagnosing faults in the associated output unit by detecting the feedback signal from the output unit to the computer processing unit means, and means connected to said output units for providing the logical sum of the outputs of said output units as a control signal.
Claim 2
Dependent Claim
289 words
A mobile object control device of the dual type comprising at least one input unit for receiving signals and providing an output indicative thereof, first and second computer processing unit means connected with each other for exchanging information therein with each other for the purpose of collation, said first and second computer processing unit means each being connected to said input unit for producing a signal for controlling a mobile object in response to the output received from said input unit, first and second trouble-shooting unit means connected respectively to said first and second computer processing unit means for diagnosing faults in the object control device, each of said trouble-shooting unit means providing an error signal for indicating a fault in response to the detection of a fault by said trouble-shooting unit means, first and second output units connected respectively to said first and second computer processing unit means and to said first and second troubleshooting means, each of said output units providing an output signal in accordance with the output of the associated computer processing unit means and including a relay switch for interrupting the output signal of said computer processing unit means in response to the error signal from said trouble-shooting unit means, first and second feedback lines connected respectively between said first output unit and said first computer processing unit means and between said second output unit and said second computer processing unit means, said first and second trouble-shooting unit means diagnosing faults in the associated output unit by detecting the feedback signal from the output unit to the computer processing unit means, and means connected to said output units for providing the logical sum of the outputs of said output units as a control signal.
Claim 3
Dependent Claim
154 words
A mobile object control device according to claim 1, wherein each of said trouble-shooting unit means includes a timing pulse generator for producing a pulse signal of a constant period, a delay circuit connected to said timing pulse generator for delaying said pulse signal, a coincidence circuit for comparing a signal from said computer processing unit means associated with said trouble-shooting unit means with the delayed pulse signal from Said delay circuit and providing a signal in accordance with the result of the comparison, and a switch operative in response to a noncoincidence signal from said coincidence circuit for controlling said output unit associated therewith, each of said computer processing unit means including a common operation unit means operating in time sharing relation in synchronization with the pulse signal from said timing pulse generator and providing an output pulse when the result of a computing operation coincides with a predetermined value for such operation.
Claim 4
Dependent Claim
127 words
A mobile object control device according to claim 1, wherein each of said trouble-shooting means includes a timing pulse generator for producing a pulse signal of a constant period, and a diagnostic circuit operating in synchronization with the pulse signal from said timing pulse generator for diagnosing the existence of a fault in said computer processing unit means associated therewith, each of said computer processing unit means including a common operation unit means operating in time sharing relation in synchronization with the timing pulse, the operation of said common operation unit means being interrupted during the diagnosis operation, and said common operation unit means diagnosing the remaining part of said computer processing unit means after said common operation unit means has been proved to be operating properly.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |