GB2124794A - Monitoring system - Google Patents
Monitoring system Download PDFInfo
- Publication number
- GB2124794A GB2124794A GB08222773A GB8222773A GB2124794A GB 2124794 A GB2124794 A GB 2124794A GB 08222773 A GB08222773 A GB 08222773A GB 8222773 A GB8222773 A GB 8222773A GB 2124794 A GB2124794 A GB 2124794A
- Authority
- GB
- United Kingdom
- Prior art keywords
- memory
- programme
- stored
- deviation
- micro processor
- 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.)
- Withdrawn
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
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0259—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the response to fault detection
- G05B23/0286—Modifications to the monitored process, e.g. stopping operation or adapting control
- G05B23/0291—Switching into safety or degraded mode, e.g. protection and supervision after failure
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
A non intrusive reliability monitoring system comprises a micro processor 10 including a processing unit 12, a clock 16, a memory 14 and an input/output inter face 18. The inter face 18 is connectable to one or more sensors 20 located in the system under test and the processing unit is programmed to compare the input from the or each sensor with the stored programme (read only memory) and the clock and to enter into the memory any deviation of the sensed data from the stored programme. <IMAGE>
Description
SPECIFICATION
Monitoring system
This invention relates to a non-intrusive reliability monitoring system, and in particular to a micro-processor controlled system.
Automatically controlled systems, for example industrial plant and the like, need monitoring in order to ensure that the desired programme is in fact being followed both to ensure adequate quality of the product of such automatic system and to pin-point sources of trouble within the control systems.
Such monitoring should preferably be carried out completely independently of the automatic control systems, and should be non-intrusive, that is it should not interrupt the operation of the equipment or system from which the reliability data is to be collected in any way and should not itself constitute any hazard.
The invention seeks to provide a reliability monitoring system improved in the above respects.
According to the present invention there is provided a non-intrusive reliability monitoring system which comprises a micro processor including a processing unit, a clock, a memory and an input/output interface the interface being connectable to one or more sensors located in the system under test and the processing unit being programmed to compare input from the or each sensor with the stored programme and the clock, and enter into the memory any deviation of the sensor from the stored programme.
At suitable time intervals depending on the memory capacity of the system, and the system under test, the micro processor may be removed and the input/output interface connected to data storage means whereby the stored data in the memory will be transferred to the date storage means for subsequent analysis and evaluation.
Since the system according to the invention is set up to store in its memory only those events which do not agree with its programme, it will in effect record only misfunctions of the system under test, and therefore the memory capacity needed may be very much smaller than has hitherto been required for monitoring systems. For example, the micro processor's own random access memory may well have sufficient storage capacity without the necessity of external disk or tape storage systems. The system of the invention should preferably have an independent power source from the system under test and this may conveniently comprise a self contained battery.Currently available components enable the system of the invention to be manufactured in a very small physical size and so systems according to the invention om-be ~^ located simply and conveniently wherever needed about the system under test.
The system according to the invention may
be used to monitor virtually any automatic
controlled system, whether controlling indus
trial machinery, production lines, boilers, hea
ting/cooling systems, and so forth. The sen
sors employed will be appropriate to the sys
tem being monitored. For example, current
flowing in the system under test can be
detected by means of an inductor located
adjacent to the current carrying wire forming
a current transformer therewith; whether a
valve is open or closed can be detected by
means of an acoustic detector; temperature
can be measured by means of a thermocou
ple; pressure by means of a pressure trans
ducer; and other non-intrusive sensors may be
employed for other systems as appropriate.
After appropriate intervals, which may be
periods of months, the system according to
the invention may be removed and its mem
ory transferred into a suitable data storage
device, for example the disk storage device of
a mini or micro computer. The data may then
be analysed using one of the commercially
available computer packages for this task.
Alternatively, rather than storing the data
for subsequent analysis and evaluation, data
indicating a deviation of the system being
monitored from programme may be sent di
rectly to a monitoring station for immediate
action.
The invention will be described further, by
way of example, with reference to the accom
panying drawing, in which the sole figure is a
block diagram of a system in accordance with
the invention.
Referring to the drawing, a non-intrusive
reliability monitoring system comprises a mi
croprocessor generally designated 10 contain
ing a central processing unit 12, random
access memory 14, a clock 16, and an in
put/output interface unit 1 8.
In use the micro processor 10 is connected
to a series of sensors 20 arranged in the
system under test as necessary to monitor the
operation of that system. Data fed in from the
sensors 20 through the interface 1 8 is com
pared by the central processing unit 12,
which contains a programme in a read-only
memory (ROM). Should the sensed data at
that time, as read from the clock, differ from
the programmed operation of the system un
der test the deviation will be recorded in the
random access memory 1 4. At some suitable
point the micro processor 10 may be removed
from its location and, via the interface unit 1 8 connected to a suitable data storage device,
for example a mini computer disc memory.
The data from the memory 14 can then be
analysed and evaluated according to a com
mercially available programme for this pur
pose. Micro processor 10 conveniently con .;tains its own-povver sousceen -the-feffleof-r- dry cell battery and is therefore effectively self
contained. Similarly the sensors 20 are of the non-intrusive variety and do not make visible connection with the system under test. Thus the operation of the monitoring system of the invention cannot in any way adversely affect the system under test.
The system of the invention provides highly reliable methods of monitoring the operation of automatic control systems.
Claims (9)
1. A non intrusive reliability monitoring system which comprises a micro processor including a processing unit, a clock, a memory and an input/output interface, the interface being connectable to one or more sensors located in the system under test, and the processing unit being programmed to compare input from the or each sensor with a stored programme and the clock, and enter into the memory any deviation of the sensed data from the stored programme.
2. A system as claimed in claim 1 in which the memory is the random access memory in the micro processor.
3. A system according to either of claims 1 or 2 in which the programme is stored in a read only memory.
4. A system as claimed in any one of claims 1 to 3 in which the micro processor has a self contained or independent power supply from the system under test.
5. A system as claimed in any one of claims 1 to 4 in which the sensors are selected from: and inductor located adjacent to a current carrying wire forming a current transformer therewith; an accoustic detector; or a pressure transducer.
6. A system as claimed in any one of claims 1 to 5 in which a deviation between the sensed date and the programme is stored in memory.
7. A system as claimed in any one of claims 1 to 6 in which a deviation between the sensed data and the programme is sent directly to an external monitoring station.
8. A system as claimed in any one of claims 1 to 7 in which the deviations stored in the memory may be periodically transferred to a suitable data storage device for subsequent analysis.
9. A system as claimed in claim 8 in which the suitable data storage device is the disc store of a mini or micro computer.
1 0. A non intrusive reliability monitoring system substantially as hereinbefore described with reference to and as illustrated in the accompanying drawing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08222773A GB2124794A (en) | 1982-08-06 | 1982-08-06 | Monitoring system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08222773A GB2124794A (en) | 1982-08-06 | 1982-08-06 | Monitoring system |
Publications (1)
Publication Number | Publication Date |
---|---|
GB2124794A true GB2124794A (en) | 1984-02-22 |
Family
ID=10532169
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08222773A Withdrawn GB2124794A (en) | 1982-08-06 | 1982-08-06 | Monitoring system |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2124794A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0167211A1 (en) * | 1984-07-03 | 1986-01-08 | Laboratoires D'electronique Et De Physique Appliquee L.E.P. | Washing-machine provided with a numerical interface adapter circuit assuring the communication with a card reader with an electronic memory, and washing-machine with an electronic card |
EP0179909A1 (en) * | 1984-05-04 | 1986-05-07 | Gould Inc. | Method and system for improving the operational reliability of electronic systems formed of subsystems which perform different functions |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2044485A (en) * | 1979-03-08 | 1980-10-15 | Sunstrand Corp | Test system for a dynamic machine |
GB2052801A (en) * | 1979-06-05 | 1981-01-28 | Scottish & Newcastle Breweries | Control unit |
GB2062896A (en) * | 1979-09-07 | 1981-05-28 | British Steel Corp | Fault detection in sequential operations |
GB2067307A (en) * | 1979-12-21 | 1981-07-22 | Pcl Reprographic Eng Services | Improvements in Apparatus for a Method of Diagnostic Testing of Electrically Controlled Machinery |
-
1982
- 1982-08-06 GB GB08222773A patent/GB2124794A/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2044485A (en) * | 1979-03-08 | 1980-10-15 | Sunstrand Corp | Test system for a dynamic machine |
GB2052801A (en) * | 1979-06-05 | 1981-01-28 | Scottish & Newcastle Breweries | Control unit |
GB2062896A (en) * | 1979-09-07 | 1981-05-28 | British Steel Corp | Fault detection in sequential operations |
GB2067307A (en) * | 1979-12-21 | 1981-07-22 | Pcl Reprographic Eng Services | Improvements in Apparatus for a Method of Diagnostic Testing of Electrically Controlled Machinery |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0179909A1 (en) * | 1984-05-04 | 1986-05-07 | Gould Inc. | Method and system for improving the operational reliability of electronic systems formed of subsystems which perform different functions |
EP0179909A4 (en) * | 1984-05-04 | 1988-05-03 | Gould Inc | Method and system for improving the operational reliability of electronic systems formed of subsystems which perform different functions. |
EP0167211A1 (en) * | 1984-07-03 | 1986-01-08 | Laboratoires D'electronique Et De Physique Appliquee L.E.P. | Washing-machine provided with a numerical interface adapter circuit assuring the communication with a card reader with an electronic memory, and washing-machine with an electronic card |
FR2567165A1 (en) * | 1984-07-03 | 1986-01-10 | Labo Electronique Physique | WASHING MACHINE WITH ADAPTER DIGITAL INTERFACE CIRCUIT PROVIDING COMMUNICATION WITH ELECTRONIC MEMORY CARD READER AND ELECTRONIC CARD WASHING MACHINE. |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EG22325A (en) | Method for monitoring plants with mechanical components | |
Zapp et al. | Advanced instrumented sphere (IS) for impact measurements | |
US4298955A (en) | Method of and apparatus for the detection and analysis of hazards | |
CN108037717B (en) | Intelligent pig farm monitoring system | |
US20170248497A1 (en) | Apparatus for Capturing Data Related to an Event Indicating Abnormal Function of a Machine | |
GB2124794A (en) | Monitoring system | |
AU3358893A (en) | Disinfection of containers | |
KR970701894A (en) | IMPROVEMENTS IN OR RELATING TO THE CONTROL OF PRODUCTION PROCESSES | |
CN207408001U (en) | Dynamic temperature monitoring early warning system | |
JPS6147325B2 (en) | ||
Jennings et al. | Machine tool condition monitoring using statistical quality control charts | |
CN107680346A (en) | A kind of monitoring device and its method being used in dynamic and static state parameters reciprocal effect environment | |
JPS5679553A (en) | Line monitor | |
CN211263393U (en) | Gas sensor detection equipment | |
CN213715779U (en) | Network control system fault detection system | |
CN111829583A (en) | Robot testing method and device | |
JPS5510650A (en) | Interface monitor system | |
JPS56149655A (en) | Detecting method of desired phenomenon in electronic computer system | |
JPS6234261A (en) | Supervisory unit for access state of memory | |
CN206818319U (en) | A kind of child's body temperature real time on-line detection device and its control system | |
CN115511416A (en) | Intelligent logistics storage management system and method | |
CN114035751A (en) | Abnormal state data acquisition method | |
JPH06129893A (en) | Vibration measuring apparatus | |
CN113347380A (en) | Online monitoring alarm triggering video storage method for oil station | |
JPH08307960A (en) | Remote monitoring device for adjusting valve |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |