GB1341551A - - Google Patents
Info
- Publication number
- GB1341551A GB1341551A GB1341551DA GB1341551A GB 1341551 A GB1341551 A GB 1341551A GB 1341551D A GB1341551D A GB 1341551DA GB 1341551 A GB1341551 A GB 1341551A
- Authority
- GB
- United Kingdom
- Prior art keywords
- channel
- control
- input
- output
- data
- 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
- G05B15/00—Systems controlled by a computer
- G05B15/02—Systems controlled by a computer electric
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Feedback Control In General (AREA)
- Analogue/Digital Conversion (AREA)
- Control By Computers (AREA)
Abstract
1341551 Automatic control of temperature ROSEMOUNT ENG CO Ltd 19 April 1971 [2 March 1970] 9808/70 Heading G3R [Also in Division G4] A control system includes a common data processing unit for processing data in digital form and a plurality of separate control channels, each channel having a digital store for storing input information, output information and other data relevant to that channel, there being sequencing means for sequentially connecting the data processing unit to the channel stores, and an algorithm store for providing instructions to the data processing unit for appropriately processing the input data on the selected channel and feeding the processed input data to the channel store, connection of the algorithm store to the processing unit being controlled by a storage matrix with manual input and visible indication. Each channel store is a shift register. A clock-driven BCD channel number counter selects the shift registers in turn, the count also being decoded to address a manual diode plug-in pin-board which controls a scaler interposed between a console and the channels. It also feeds a comparator for comparison with a sampling interval counter driven by the channel number counter, to control the intervals between successive input samplings in the various channels. It permits manual selection, for each channel separately, of the processing algorithms (viz. whether the control loop for the channel is to include proportional, integral, derivative, sum, difference, product and/or ratio terms, lead-lag algorithms also being selectable), and conditions under which alarms will be given. Jumper wires can be used on the pin-board to connect a selected out-put of one channel as an input to another, thus fluid flow temperature can be sensed in one channel providing proportional plus integral control using a set-point defined by the operator to give the set-point for a second channel which also senses the temperature and provides proportional plus derivative control to produce an output signal to a heater for the fluid, the two sensing positions being downstream of the heater with the first channel's position being furthest from the heater. The algorithms are stored in two programme matrices addressed by a programme counter, and control the processing which occurs in an arithmetic unit having a serial adder, an accumulator register, two working registers and an input-output register. An analogue input value at a channel is converted to digital form in an A-D converter respective to the channel or shared between all the channels, the result being stored in the shift register. A digital output value from the arithmetic unit to a channel is stored in the shift register then converted to analogue form, the D-A conversion having a battery backed-up power supply and a capacitor hold store in its output, in case of failure in the main power supply &c. The shift registers also communicate in both directions with a digital interface for other digital equipment. D-A conversion is by having each bit in a particular stage of the shift register for a total time corresponding to the bit significance, and smoothing the output to produce a voltage which is converted into a current. A-D conversion uses a ladder network with switches controlled by the stages of a shift register to derive the digital result in the register bit-bybit, most significant bit first, by a series of trials and comparisons, the analogue input being a voltage derived from a current using a resistor and gated to the A-D converter using an FET. Console. Manual keys select a channel for monitoring on the console and for entry of control data from the console. Numerical visual displays show channel number, measured input, set-point, and output. The output display and an extra display show the control data in the channel's shift register. The extra display can show integral time constant, derivative time constant, proportional band or sampling interval, under control of keys. Keys can select automatic control, manual control or hold, for the selected channel, or normal, manual or hold operation for all channels. Fault indicators are provided for power supply failures, arithmetic check failure, and data transfer failure. Alarm levels may be keyed in for input and output signals, the alarms being lamps in a process flow diagram, or may be audible.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB980870 | 1970-03-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1341551A true GB1341551A (en) | 1973-12-25 |
Family
ID=9879180
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1341551D Expired GB1341551A (en) | 1970-03-02 | 1971-04-19 |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPS5233276B1 (en) |
CA (1) | CA954631A (en) |
CH (1) | CH563618A5 (en) |
DE (1) | DE2109922A1 (en) |
FR (1) | FR2081620B1 (en) |
GB (1) | GB1341551A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116107487A (en) * | 2023-04-12 | 2023-05-12 | 上海励驰半导体有限公司 | Sampling control method, related device and storage medium |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2335788A1 (en) * | 1972-07-21 | 1974-01-31 | Allmaenna Svenska Elek Ska Ab | SELF-ADJUSTING REGULATOR |
GB1490548A (en) * | 1974-01-07 | 1977-11-02 | Texas Instruments Inc | Programmable logic control system with memory for temporary storage |
JPS57170198U (en) * | 1981-04-20 | 1982-10-26 | ||
DE3122037A1 (en) * | 1981-05-29 | 1983-01-05 | Siemens AG, 1000 Berlin und 8000 München | ELECTRONIC CONTROL UNIT |
DE3207012C2 (en) * | 1982-02-26 | 1984-08-30 | Valentin V. Malachovka Moskovskaja oblast' Žilikov | Method for controlling the drilling process when drilling in rock and device for carrying out the method |
CN114421962B (en) * | 2021-12-28 | 2023-03-24 | 广东纳睿雷达科技股份有限公司 | Sampling channel abnormity diagnosis method, device, equipment and storage medium |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1097094A (en) * | 1965-04-16 | 1967-12-29 | London Electricity Board | Improvements relating to an electrical switching system |
-
1971
- 1971-02-23 CA CA106,033A patent/CA954631A/en not_active Expired
- 1971-03-01 JP JP1033471A patent/JPS5233276B1/ja active Pending
- 1971-03-01 FR FR7106956A patent/FR2081620B1/fr not_active Expired
- 1971-03-01 CH CH292171A patent/CH563618A5/xx not_active IP Right Cessation
- 1971-03-02 DE DE19712109922 patent/DE2109922A1/en active Pending
- 1971-04-19 GB GB1341551D patent/GB1341551A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116107487A (en) * | 2023-04-12 | 2023-05-12 | 上海励驰半导体有限公司 | Sampling control method, related device and storage medium |
CN116107487B (en) * | 2023-04-12 | 2023-08-08 | 上海励驰半导体有限公司 | Sampling control method, related device and storage medium |
Also Published As
Publication number | Publication date |
---|---|
FR2081620B1 (en) | 1977-06-17 |
FR2081620A1 (en) | 1971-12-10 |
CH563618A5 (en) | 1975-06-30 |
CA954631A (en) | 1974-09-10 |
JPS5233276B1 (en) | 1977-08-26 |
DE2109922A1 (en) | 1971-09-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3976981A (en) | Multi-channel control systems | |
US4254472A (en) | Remote metering system | |
US4189765A (en) | Digital controller | |
US5446672A (en) | Machine monitoring system | |
US4853693A (en) | Air condition monitor unit for monitoring at least one variable of the ambient air | |
US4566868A (en) | Pressure source | |
US4399513A (en) | Machine monitoring system and apparatus | |
GB1341551A (en) | ||
EP0487740B1 (en) | Method of monitoring operating conditions of injection molding machine | |
US3260998A (en) | Digital computer measurement and control of analog processes | |
US6318181B1 (en) | Multi-channel pressure sensor controller | |
US3896871A (en) | Computer controlled automated building system having a manual control mode | |
US4841459A (en) | Temperature indicating control apparatus having data storing function | |
US4671124A (en) | Load monitor for cyclic machine | |
JPH0326967B2 (en) | ||
US4845637A (en) | Feeder monitor arrangement for stored program controlled rectifier plant | |
JPS55123099A (en) | Televized gas monitoring system | |
HU194090B (en) | Device for inspecting and controlling the running of extruder and extruder-lines at processing of plastics | |
JP2566689B2 (en) | Distributed controller | |
EP0076050A1 (en) | Pressure source | |
SU809065A1 (en) | Conveyor control device | |
JPH0533933Y2 (en) | ||
CN106444905A (en) | High-temperature superconducting welding temperature synchronous measurement controller | |
SU1471940A3 (en) | Routine of controlling and monitoring the operation of one or several worm-screw presses in processing of plastics | |
JPS58223774A (en) | Radiation monitoring device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |