US4712173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multicontrol process control system
Assignee: Azbil Corp
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Filing: 1985-09-20
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Granted: 1987-12-08
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Expires: 2005-09-20
Abstract
Abstract The present invention uses an input multiplexer for selecting a plurality of input signals, a fluid multiplexer for selectively delivering a control output to a plurality of devices to be controlled, a detecting multiplexer for selecting detected signals indicative of the condition in which the devices respond, a controller for controlling the multiplexers for successive and repeated selective operations, for effecting a controlling arithmetic operation on an input signal fed through the input multiplexer and a detected signal fed through the detecting multiplexer, and for delivering a control signal resulting from the controlling arithmetic operation, and an electropneumatic transducer for converting the control signal to a pneumatic pressure and issuing the pneumatic pressure as an input to the fluid multiplexer.
Inventors
- 👤 Masatoshi Fujiwara
- 👤 Masato Kuroda
- 👤 Tatsuhide Shiga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:13
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/1925; G05D23/1927; G05D23/193; G05D23/1932; G05D23/1934; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/2065; Y10T137/2071
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
105 words
A multicontrol system comprising an input multiplexer for selecting a plurality of input signals, a detecting multiplexer for selecting detected signals indicative of the condition in which a plurality of devices respond, an output multiplexer for selectively delivering a control output to the plurality of devices to be controlled and a controller for controlling the multiplexers for successive and repeated selective operation, for effecting a controlling arithmetic operation on an input signal fed through said input multiplexer and a detected signal fed through said detecting multiplexer, and for delivering a control signal resulting from said controlling arithmetic operation as an input to said output multiplexer.
Claim 2
Dependent Claim
105 words
A multicontrol system comprising an input multiplexer for selecting a plurality of input signals, a detecting multiplexer for selecting detected signals indicative of the condition in which a plurality of devices respond, an output multiplexer for selectively delivering a control output to the plurality of devices to be controlled and a controller for controlling the multiplexers for successive and repeated selective operation, for effecting a controlling arithmetic operation on an input signal fed through said input multiplexer and a detected signal fed through said detecting multiplexer, and for delivering a control signal resulting from said controlling arithmetic operation as an input to said output multiplexer.
Claim 3
Dependent Claim
27 words
A multicontrol system according to claim 1, wherein said devices to be controlled partly comprise a plurality of regulating valves inserted in series in one flow path.
Claim 4
Dependent Claim
27 words
A multicontrol system according to claim 1, wherein said devices to be controlled partly comprise a plurality of regulating valves inserted in parallel in one flow path.
Claim 5
Dependent Claim
41 words
A multicontrol system as set forth in claim 1 wherein said output multiplexer includes a fluid multiplexer and an electropneumatic transducer for converting said control signal to a pneumatic pressure and issuing said pressure as an input to said fluid multiplexer.
Claim 6
Dependent Claim
104 words
A multicontrol system comprising a multiplexer for selectively delivering a control output to a plurality of devices to be controlled, a detecting multiplexer for selecting detected signals indicative of the condition in which said devices respond, a controller for controlling the multiplexers for successive and repeated selective operation, for effecting a controlling arithmetic operation on an input signal and a detected signal fed through said detecting multiplexer, and for delivering a control signal resulting from said controlling arithmetic operation, and an electropneumatic transducer for converting said control signal to a pneumatic pressure and issuing said pneumatic pressure as an input to said fluid multiplexer.
Claim 7
Dependent Claim
104 words
A multicontrol system comprising a multiplexer for selectively delivering a control output to a plurality of devices to be controlled, a detecting multiplexer for selecting detected signals indicative of the condition in which said devices respond, a controller for controlling the multiplexers for successive and repeated selective operation, for effecting a controlling arithmetic operation on an input signal and a detected signal fed through said detecting multiplexer, and for delivering a control signal resulting from said controlling arithmetic operation, and an electropneumatic transducer for converting said control signal to a pneumatic pressure and issuing said pneumatic pressure as an input to said fluid multiplexer.
Claim 8
Dependent Claim
26 words
A multicontrol system according to claim 5 wherein said devices to be controlled comprise a plurality of regulating valves inserted in series in one flow path.
Claim 9
Dependent Claim
26 words
A multicontrol system according to claim 5, wherein said devices to be controlled comprise a plurality of regulating valves inserted in parallel in one flow path.
Claim 10
Dependent Claim
161 words
A multicontrol system comprising an input multiplexer for selecting a plurality of input signals, an output multiplexer for selectively delivering a control output to a plurality of devices to be controlled, a light source for delivering detecting light rays through light transmission paths to response detecting means for detecting the condition in which said devices respond, photoelectric transducers associated respectively with said devices for converting to electric signal light signals passed through said light transmission paths and indicating detected values from said response detecting means to electric signals based on said light rays, a detecting multiplexer for selecting the outputs from said photoelectric transducers; and a controller for controlling the multiplexers for successive and repeated selective operation, for effecting a controlling arithmetic operation on an input signal fed through said input multiplexer and a detected signal fed through said detecting multiplexer, and for delivering a control signal resulting from said controlling arithmetic operations as an input signal to said output multiplexer.
Claim 11
Dependent Claim
161 words
A multicontrol system comprising an input multiplexer for selecting a plurality of input signals, an output multiplexer for selectively delivering a control output to a plurality of devices to be controlled, a light source for delivering detecting light rays through light transmission paths to response detecting means for detecting the condition in which said devices respond, photoelectric transducers associated respectively with said devices for converting to electric signal light signals passed through said light transmission paths and indicating detected values from said response detecting means to electric signals based on said light rays, a detecting multiplexer for selecting the outputs from said photoelectric transducers; and a controller for controlling the multiplexers for successive and repeated selective operation, for effecting a controlling arithmetic operation on an input signal fed through said input multiplexer and a detected signal fed through said detecting multiplexer, and for delivering a control signal resulting from said controlling arithmetic operations as an input signal to said output multiplexer.
Claim 12
Dependent Claim
27 words
A multicontrol system according to claim 8, wherein said devices to be controled partly comprise a plurality of regulating valves iserted in series in one flow path.
Claim 13
Dependent Claim
27 words
A multicontrol system according to claim 8, wherein said devices to be controlled partly comprise a plurality of regulating valves inserted in parallel in one flow path.
Claim 14
Dependent Claim
41 words
A multicontrol system as set forth in claim 8, wherein said output multiplexer includes a fluid multiplexer and an electropneumatic transducer for converting said control signal to a pneumatic pressure and issuing said pressure as an input to said fluid multiplexer.
Claim 15
Dependent Claim
91 words
A multicontrol system comprising a fluid multiplexer for selectively delivering a control output to a plurality of devices to be controlled, a light source for delivering detecting light rays through light transmission paths to response detecting means for detecting the condition in which said devices respond, photoelectric transducers associated respectively with said devices for converting to electric signals light signals passed through said light transmission paths and indicating detected values from said response detecting means based on said light rays, a detecting multiplexer for selecting the outputs from said photoelectric transducers,
Claim 16
Dependent Claim
91 words
A multicontrol system comprising a fluid multiplexer for selectively delivering a control output to a plurality of devices to be controlled, a light source for delivering detecting light rays through light transmission paths to response detecting means for detecting the condition in which said devices respond, photoelectric transducers associated respectively with said devices for converting to electric signals light signals passed through said light transmission paths and indicating detected values from said response detecting means based on said light rays, a detecting multiplexer for selecting the outputs from said photoelectric transducers,
Claim 17
Dependent Claim
68 words
a controller for controlling the multiplexers for successive and repeated selective operation, for effecting a controlling arithmetic operation on an input signal and a detected signal fed through said detecting multiplexer, and for delivering a control signal resulting from said controlling arithmetic operation, and an electropneumatic transducer for converting said control signal to a pneumatic pressure and issuing said pneumatic pressure as an input to said fluid multiplexer.
Claim 18
Dependent Claim
68 words
a controller for controlling the multiplexers for successive and repeated selective operation, for effecting a controlling arithmetic operation on an input signal and a detected signal fed through said detecting multiplexer, and for delivering a control signal resulting from said controlling arithmetic operation, and an electropneumatic transducer for converting said control signal to a pneumatic pressure and issuing said pneumatic pressure as an input to said fluid multiplexer.
Claim 19
Dependent Claim
26 words
A multicontrol system according to claim 12, wherein said devices to be controlled comprise a plurality of regulating valves inserted in series in one flow path.
Claim 20
Dependent Claim
26 words
A multicontrol system according to claim 12, wherein said devices to be controlled comprise a plurality of regulating valves inserted in parallel in one flow path.
Claim 21
Dependent Claim
167 words
A multicontrol system comprising an input multiplexer for selecting a plurality of input signals, a fluid multiplexer for selectively delivering a control output to a plurality of devices to be controlled, a detecting multiplexer for selecting detected signals indicative of the condition in which said devices respond, an electropneumatic transducer for converting a control signal to a pneumatic pressure and delivering said pneumatic pressure to said fluid multiplexer, a pressure sensor for detecting the pneumatic pressure delivered from said electropneumatic transducer as an electric signal, a selector for selecting the output from said detecting multiplexer and the output from said pressure sensor, and a controller for controlling the multiplexers for successive and repeated selective operation and enabling said selector to select the output as required, for effecting a controlling arithmetic operation on an input signal fed through said input multiplexer and a detected signal fed through said selector, and for delivering said control signal resulting from said controlling aithmetic operation as an input to said electropneumatic transducer.
Claim 22
Dependent Claim
167 words
A multicontrol system comprising an input multiplexer for selecting a plurality of input signals, a fluid multiplexer for selectively delivering a control output to a plurality of devices to be controlled, a detecting multiplexer for selecting detected signals indicative of the condition in which said devices respond, an electropneumatic transducer for converting a control signal to a pneumatic pressure and delivering said pneumatic pressure to said fluid multiplexer, a pressure sensor for detecting the pneumatic pressure delivered from said electropneumatic transducer as an electric signal, a selector for selecting the output from said detecting multiplexer and the output from said pressure sensor, and a controller for controlling the multiplexers for successive and repeated selective operation and enabling said selector to select the output as required, for effecting a controlling arithmetic operation on an input signal fed through said input multiplexer and a detected signal fed through said selector, and for delivering said control signal resulting from said controlling aithmetic operation as an input to said electropneumatic transducer.
Claim 23
Dependent Claim
27 words
A multicontrol system according to claim 15, wherein said devices to be controlled partly comprise a plurality of regulating valves inserted in series in one flow path.
Claim 24
Dependent Claim
27 words
A multicontrol system according to claim 15, wherein said devices to be controlled partly comprise a plurality of regulating valves inserted in parallel in one flow path.
Claim 25
Dependent Claim
150 words
A multicontrol system comprising a fluid multiplexer for seletively delivering a control output to a plurality of devices to be controlled, a detecting multiplexer for selecting detected signals indicative of the condition in wnich said devices respond, an electropneumatic transducer for converting a control signal to a pneumatic pressure and delivering said pneumatic pressure to said fluid multiplexer, a pressure sensor for detectig the pneumatic pressure delivered from said electropneumatic transducer as an electric signal, a selector for selecting the output from said detecting multiplexer and the output from said pressure sensor and a controller for controlling the multiplexers for successive and repeated selective operation and enabling said selector to select the output, for effecting a controlling arithmetic operation on an input signal and a detected signal fed through said selector, and for delivering said control signal resulting from said controlling arithmetic operation as an input to said electropneumatic transducer.
Claim 26
Dependent Claim
150 words
A multicontrol system comprising a fluid multiplexer for seletively delivering a control output to a plurality of devices to be controlled, a detecting multiplexer for selecting detected signals indicative of the condition in wnich said devices respond, an electropneumatic transducer for converting a control signal to a pneumatic pressure and delivering said pneumatic pressure to said fluid multiplexer, a pressure sensor for detectig the pneumatic pressure delivered from said electropneumatic transducer as an electric signal, a selector for selecting the output from said detecting multiplexer and the output from said pressure sensor and a controller for controlling the multiplexers for successive and repeated selective operation and enabling said selector to select the output, for effecting a controlling arithmetic operation on an input signal and a detected signal fed through said selector, and for delivering said control signal resulting from said controlling arithmetic operation as an input to said electropneumatic transducer.
Claim 27
Dependent Claim
26 words
A multicontrol system according to claim 18, wherein said devices to be controlled comprise a plurality of regulating valves inserted in series in one flow path.
Claim 28
Dependent Claim
26 words
A multicontrol system according to claim 18, wherein said devices to be controlled comprise a plurality of regulating valves inserted in parallel in one flow path.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-07 | 1991-06-08 | 1991-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-07 | 1995-06-08 | 1995-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-07 | 1999-06-08 | 1999-12-08 | $7700.00 | Window Closed / Lapsed |