GB1474382A - Programmable control means - Google Patents
Programmable control meansInfo
- Publication number
- GB1474382A GB1474382A GB3168373A GB3168373A GB1474382A GB 1474382 A GB1474382 A GB 1474382A GB 3168373 A GB3168373 A GB 3168373A GB 3168373 A GB3168373 A GB 3168373A GB 1474382 A GB1474382 A GB 1474382A
- Authority
- GB
- United Kingdom
- Prior art keywords
- control
- pulses
- circuit
- contactor unit
- markings
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/12—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using record carriers
- G05B19/124—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using record carriers using tapes, cards or discs with optically sensed marks or codes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Temperature (AREA)
Abstract
1474382 Automatic control system F WARHURST 2 Oct 1974 [3 July 1973] 31683/73 Heading G3N A programmed controller provides control pulses in a repetitive time cycle that are used by an interposed contactor unit to control the switching off or on of an appliance. The pulses are of a short duration, leaving an interval between pulses for manual over-riding control of the contactor unit. In the embodiment shown, for controlling a plurality of heaters, the program is formed by markings e.g. adhesive tape on a drum or tape that is driven by motor M. For each heater control, the markings are detected by an electro-optical system 15, using photodiodes or phototransistors to produce an 'on' pulse to contactor unit 2. This pulse is turned off after a given time delay, determined by an RC circuit, but unit 2 remains latched "on" until the end of a marking is detected. Over-riding manual control e.g. by push buttons, thermostats or pressure gauges may be provided in circuit 30, as selected by switch 24. The system may also be used to control motors or solenoid operated valves. Details of the system e.g. of a programmed drum or circuit 30 are given in Figs. 2-6 (not shown).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3168373A GB1474382A (en) | 1974-10-02 | 1974-10-02 | Programmable control means |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3168373A GB1474382A (en) | 1974-10-02 | 1974-10-02 | Programmable control means |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1474382A true GB1474382A (en) | 1977-05-25 |
Family
ID=10326845
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3168373A Expired GB1474382A (en) | 1974-10-02 | 1974-10-02 | Programmable control means |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1474382A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2433066A1 (en) * | 1978-08-09 | 1980-03-07 | Sulzer Ag | ELECTRONIC DEVICE FOR CONTROLLING A WEAVING MACHINE |
-
1974
- 1974-10-02 GB GB3168373A patent/GB1474382A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2433066A1 (en) * | 1978-08-09 | 1980-03-07 | Sulzer Ag | ELECTRONIC DEVICE FOR CONTROLLING A WEAVING MACHINE |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
746 | Register noted 'licences of right' (sect. 46/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19921002 |