WO1993020542A1 - Systeme pour la surveillance de l'atmosphere - Google Patents

Systeme pour la surveillance de l'atmosphere Download PDF

Info

Publication number
WO1993020542A1
WO1993020542A1 PCT/GB1993/000688 GB9300688W WO9320542A1 WO 1993020542 A1 WO1993020542 A1 WO 1993020542A1 GB 9300688 W GB9300688 W GB 9300688W WO 9320542 A1 WO9320542 A1 WO 9320542A1
Authority
WO
WIPO (PCT)
Prior art keywords
computer
monitoring
assembly
atmosphere
monitoring assembly
Prior art date
Application number
PCT/GB1993/000688
Other languages
English (en)
Inventor
Robert Jeremy Howard
Original Assignee
Graseby Dynamics Limited
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from GB929207107A external-priority patent/GB9207107D0/en
Priority claimed from GB929218350A external-priority patent/GB9218350D0/en
Application filed by Graseby Dynamics Limited filed Critical Graseby Dynamics Limited
Publication of WO1993020542A1 publication Critical patent/WO1993020542A1/fr

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/14—Central alarm receiver or annunciator arrangements
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms

Definitions

  • the present invention relates to apparatus for monitoring and analysing an ambient atmosphere, particularly but not exclusively, for detecting the presence of gases and vapours, and/or for measuring their concentration.
  • a sensor system capable of detecting and/or measuring parameters of an ambient atmosphere, such system being constructed in the form of a compatible add ⁇ on (expansion) assembly for a computer, whereby the sensor system becomes a part of the system of the host computer (eg is contained within the body of the computer) .
  • the atmosphere sensor system is conveniently constructed such as to be capable of being plugged into, for example, an expansion slot of a personal computer (IBM compatible or otherwise) and may make use of any or all of the data processing, storage, display and power supply capabilities of the host computer.
  • IBM personal computer
  • the computer may be fixed or portable.
  • the type of atmosphere sensor system employed is not critical provided it is capable of being accommodated physically in a plug-in package capable of being accepted by the host computer.
  • the sensor system may monitor parameters of the ambient atmosphere such as for example temperature, pressure and humidity, in addition to monitoring the presence and/or concentration of components such as carbon monoxide, oxygen, and hydrocarbons, as well as of specific chemical vapours, or of radioactivity.
  • parameters of the ambient atmosphere such as for example temperature, pressure and humidity, in addition to monitoring the presence and/or concentration of components such as carbon monoxide, oxygen, and hydrocarbons, as well as of specific chemical vapours, or of radioactivity.
  • the combination of atmosphere sensor system and computer may be arranged to operate either in an active manner, in which information derived from the sensor system may be displayed and the combination used as a dedicated monitor and detector, or in a passive manner, sampling and recording data whilst the computer performs other tasks or is quiescent, but with the possibility of providing an alerting indication if the presence of a particular parameter of the atmosphere for example a gas or vapour, is detected or exceeds a predetermined level.
  • Figure 1 is a schematic diagram of apparatus in accordance with a preferred embodiment of the invention comprising a personal computer and a sensor system adapted to be received as a plug- in unit in an expansion slot of the computer;
  • Figure 2 is a block diagram of the apparatus of Figure 1; and
  • Figure 3 shows, partly diagrammatically, the physical arrangement of a plug-in sensor system unit for use with the apparatus of Figure 1 and Figure 2.
  • a chemical sensor 10 together with its supporting electronic circuitry 12, is incorporated in a common package 14, for mounting in an expansion slot of, for example, an IBM-compatible personal computer or other general-purpose computer 16.
  • the sensor 10 and its electronic circuitry 12 are linked to the computer 16, which may be used to control and power the package 14.
  • the package 14 may comprise an ion mobility spectrometer detector and associated electronic control circuitry, although the invention is not intended to be so limited and other and various known types of sensor may be used, either alone or in association with other devices in the same package 14 providing information on air temperature, pressure and humidity and/or other associated variables of the ambient atmosphere.
  • the computer 16 may receive, from the unit 14, data indicative of vapours and gases present in the ambient atmosphere sensed by the sensor 10, together with their concentrations.
  • the information may be sent periodically under the control of the circuitry 12, or the unit 14 may be interrogated periodically by the computer 16.
  • the unit 14 may alternatively send unprocessed data which could be operated upon in the computer 16 by use of a chemical analysis program 18 appropriate to the type of sensor employed, to generate information indicative, for example, of the vapours and gases present in the ambient atmosphere, and their relative concentrations.
  • the information on the gases and vapours present, and their concentrations may be stored with a time- marker in the central store of the computer 16, so that profiles of concentration with time can be established for chosen components of the ambient atmosphere, with means for actuating an alarm 22 should concentration rise above a predetermined threshold level or should the presence of a particular gas or vapour be detected.
  • the operation of the chemical analysis program 18 may be conditioned by an environmental data program 20, which may also be incorporated in the control circuitry 12 of unit 14 in the same manner as the chemical analysis program.
  • a power supply 24 powers the computer 16 and may conveniently also power the unit 14.
  • the computer 16 will be controlled by a keyboard 26 or other input device.
  • a unit 14 comprises a sensor 10 and control electronics 12, both mounted upon a standard expansion slot circuit board 30, provided with a connector extension 32 with conductors for connecting with the data bus and power supply lines of the host computer 16.
  • the board 30 is mounted upon a standard expansion slot closure plate 34.
  • a sample port 36 mounted upon closure plate 34 conveys ambient atmosphere to the inlet of the sensor 10, and may incorporate a replaceable inlet filter. Circulation of air past the sample port 36 may be provided by the fan system of the host computer.
  • the installation and pre-programming of the unit 14 and the host computer 16 may be arranged by means of a dedicated program 38 which sets the operating, sample acquisition, display and data storage parameters of the combination of computer and sensor system.
  • the program 38 may also be incorporated within the circuitry of the unit 14.
  • atmosphere monitoring systems in accordance with the present embodiment possess a number of advantages over existing equipment.
  • the atmosphere sensor makes use of the host computer's data-processing, power, storage and display capabilities, these features do not have to be provided.
  • the sensor requires no special housing as it resides within the protective shell of the host computer, and commercial large scale production technology may be used for high volume production of the sensor units.
  • Monitoring may be carried out wherever a compatible computer is available for example within a laboratory environment, where a system in accordance with the invention, used in either an active mode, or a passive mode with an alarm facility, could continuously monitor for the presence in the ambient atmosphere of a hazardous chemical compound or compounds.
  • Atmosphere monitoring equipment in accordance with the invention makes unnecessary the use of multiple expensive fixed-site detectors in work-place atmosphere monitoring.
  • networked computer systems which are common in many organisations, all pertinent ambient atmosphere information derived by a number of computers fitted with atmosphere sensors and distributed throughout the workplace, can be accessed, continuously or periodically, from a single point.
  • the atmosphere monitoring function is not limited to use of a single sensor type, provided the sensor and associated circuitry can be accommodated within the dimensional limitations of the expansion card space of the host computer in use.
  • the sensors used will depend upon the monitoring requirements of the user and may include ion mobility spectrometers, micro-chromatographic detectors, carbon monoxide, total hydrocarbon, or oxygen detectors, and radioactivity detectors.
  • Equipment in accordance with the invention may be used for example for monitoring air quality in workplace or field environments; for monitoring for specific chemicals or chemical vapours in the ambient atmosphere; or for monitoring carbon monoxide, oxygen, total hydrocarbon or radioactivity in the ambient atmosphere.
  • Equipment in accordance with the invention may also be used to monitor the presence of any potentially hazardous vapours emanating from the host computer or from a larger system of which the host computer may form part.
  • vapours can arise in the interior space between the computer or system sub-assemblies, and the housing which contains them, as a result of, or immediately prior to catastrophic electrical failure. Programming the equipment to detect such vapours would enable the computer or computer system to be de-energised and an appropriate warning given.

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)

Abstract

Un système pour la surveillance de l'atmosphère comprend une carte d'extension (14) compatible avec les ordinateurs personnels IBM ou d'autres ordinateurs répandus. Cette carte porte un détecteur intégré pour surveiller la présence et/ou la concentration de différents gaz et vapeurs atmosphériques. La carte (14) fonctionne en relation avec l'ordinateur hôte et ne nécessite donc pas de systèmes propres d'alimentation en courant, de traitement des données et d'affichage.
PCT/GB1993/000688 1992-04-01 1993-04-01 Systeme pour la surveillance de l'atmosphere WO1993020542A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB9207107.5 1992-04-01
GB929207107A GB9207107D0 (en) 1992-04-01 1992-04-01 Atmosphere monitoring
GB929218350A GB9218350D0 (en) 1992-08-28 1992-08-28 Atmosphere monitoring
GB9218350.8 1992-08-28

Publications (1)

Publication Number Publication Date
WO1993020542A1 true WO1993020542A1 (fr) 1993-10-14

Family

ID=26300623

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1993/000688 WO1993020542A1 (fr) 1992-04-01 1993-04-01 Systeme pour la surveillance de l'atmosphere

Country Status (2)

Country Link
AU (1) AU3897593A (fr)
WO (1) WO1993020542A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0421100A1 (fr) * 1989-08-18 1991-04-10 Minimax GmbH Procédé et dispositif pour reconnaître des conditions dangereuses dans une pièce

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0421100A1 (fr) * 1989-08-18 1991-04-10 Minimax GmbH Procédé et dispositif pour reconnaître des conditions dangereuses dans une pièce

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
E. D. N. ELECTRICAL DESIGN NEWS vol. 30, no. 7, April 1985, BOSTON (US) pages 159 - 197 P. G. SCHREIER 'PERSONAL COMPUTER ADD-INS AND ADD-ONS FOR ENGINEERING' *

Also Published As

Publication number Publication date
AU3897593A (en) 1993-11-08

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