EP0772855B1 - Fire detection device with disruptive parameter correction - Google Patents
Fire detection device with disruptive parameter correction Download PDFInfo
- Publication number
- EP0772855B1 EP0772855B1 EP95926986A EP95926986A EP0772855B1 EP 0772855 B1 EP0772855 B1 EP 0772855B1 EP 95926986 A EP95926986 A EP 95926986A EP 95926986 A EP95926986 A EP 95926986A EP 0772855 B1 EP0772855 B1 EP 0772855B1
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- European Patent Office
- Prior art keywords
- correction
- signal
- fire
- value
- measurement signal
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- 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 - Lifetime
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- 238000001514 detection method Methods 0.000 title abstract description 11
- 238000005259 measurement Methods 0.000 claims description 39
- 230000006870 function Effects 0.000 claims description 12
- 238000004364 calculation method Methods 0.000 description 6
- 239000000779 smoke Substances 0.000 description 2
- 240000008042 Zea mays Species 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/18—Prevention or correction of operating errors
- G08B29/185—Signal analysis techniques for reducing or preventing false alarms or for enhancing the reliability of the system
Definitions
- the present invention relates to devices fire detection, and more specifically to such devices that include a fire sensor for measure a first physical quantity including a variation is significant of the existence of a fire in the vicinity of the detection device, this fire sensor generating an analog electrical signal, called measurement signal, which has a value representative of the first physical quantity, this measurement signal being influenced by at least one second physical quantity different from the first physical quantity, the device further comprising least one correction sensor for measuring said second physical quantity and generate an analog electrical signal, said correction signal, which has a representative value of the second physical quantity, in order to correct the influence of this second physical quantity on the measurement signal.
- the correction sensor used for this was a thermistor which was associated with the aforementioned amplifier, the characteristics of this thermistor being chosen to compensate for variations as best as possible amplifier gain as a function of temperature.
- document EP-A-0 418 409 describes a fire detection device comprising both a fire sensor and at least one correction sensor which are both connected to the same programmable central unit to transmit the signals of measurement and correction.
- the central unit is programmed to digitally compensate the measurement signal according to the correction signal, thereby calculating a corrected value of the measurement signal.
- this correction involves an overload of the operation of the central unit, since with each acquisition of the measurement signal, you must also acquire the correction signal and calculate the corrected value. This overload is all the more sensitive as the calculation of the corrected value is complex.
- the object of the present invention is in particular to remedy the aforementioned drawbacks.
- the detector 1 comprises a central unit programmable constituted by a microprocessor 2 which has at least two analog inputs 2a, 2b.
- the first analog input 2a is connected to a fire sensor 3 which measures a first quantity physical whose variations make it possible to detect the existence a fire in the vicinity of the fire sensor.
- This fire sensor can be for example an ion sensor smoke detection, or possibly an optical sensor smoke detection, or whatever.
- the fire sensor sends to the first entry analog 2a microprocessor electrical signal analog i which has a value (e.g. intensity or voltage) representative of the first physical quantity.
- a value e.g. intensity or voltage
- This measurement signal i is disturbed by at least one second physical quantity different from the first, by for example by ambient temperature, or by humidity or the ambient pressure in the case of a sensor ionic.
- this second quantity physical detector 1 further includes a correction 4 which measures the second physical quantity, and which is connected to the second analog input 2b of the microprocessor to send a signal to this microprocessor electric analog ⁇ , said correction signal, which has a value (for example current or voltage) representative of the second physical quantity.
- a correction 4 which measures the second physical quantity, and which is connected to the second analog input 2b of the microprocessor to send a signal to this microprocessor electric analog ⁇ , said correction signal, which has a value (for example current or voltage) representative of the second physical quantity.
- the microprocessor 2 has an internal memory, or possibly it can be connected to an external memory, in which case the central unit is constituted by the microprocessor and its external memory.
- this memory is stored, in the form of a table of values, a curve c such as that shown in FIG. 2, giving, in function of the correction signal ⁇ , a normal value i0 of measurement signal in the absence of fire.
- Microprocessor 2 is programmed to determine permanently the value of i0 corresponding to the signal of correction ⁇ and to compare the measurement signal i to this value i0: if the measurement signal i is not between iO - ⁇ 1 and i0 + ⁇ 2, where ⁇ 1 and ⁇ 2 are predetermined values (for example, ⁇ 1 and ⁇ 2 can be worth 5% of i0), the microprocessor 2 deduces the existence of a fire at in the vicinity of detector 1, and transmits an alarm signal to a central unit 5, by any known connection means, such as that connection to current loops, bus connection, ... etc.
- detector 1 may include several correction sensors 4, 6 each connected to a analog input 2b, 2c of microprocessor 2, without leaving of the scope of the invention.
- the microprocessor 2 has in memory a correspondence table giving, according to the signals of correction transmitted by the various correction sensors, normal values i0 of the measurement signal in the absence of fire. As before, microprocessor 2 then continuously calculates the normal value i0 of the signal and then compares the value of the measurement signal i received at its analog input 2a at the normal value i0, as explained above, to determine if there is a fire.
- the calculation of the normal value i0 could be performed using an algorithm stored in the microprocessor 2 or in an external memory.
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fire Alarms (AREA)
- Fire-Detection Mechanisms (AREA)
Abstract
Description
La présente invention est relative aux dispositifs de détection d'incendie, et plus spécifiquement à de tels dispositifs qui comportent un capteur d'incendie pour mesurer une première grandeur physique dont une variation est significative de l'existence d'un incendie au voisinage du dispositif de détection, ce capteur d'incendie générant un signal électrique analogique, dit signal de mesure, qui a une valeur représentative de la première grandeur physique, ce signal de mesure étant influencé par au moins une deuxième grandeur physique différente de la première grandeur physique, le dispositif comportant en outre au moins un capteur de correction pour mesurer ladite deuxième grandeur physique et générer un signal électrique analogique, dit signal de correction, qui a une valeur représentative de la deuxième grandeur physique, en vue de corriger l'influence de cette deuxième grandeur physique sur le signal de mesure.The present invention relates to devices fire detection, and more specifically to such devices that include a fire sensor for measure a first physical quantity including a variation is significant of the existence of a fire in the vicinity of the detection device, this fire sensor generating an analog electrical signal, called measurement signal, which has a value representative of the first physical quantity, this measurement signal being influenced by at least one second physical quantity different from the first physical quantity, the device further comprising least one correction sensor for measuring said second physical quantity and generate an analog electrical signal, said correction signal, which has a representative value of the second physical quantity, in order to correct the influence of this second physical quantity on the measurement signal.
Dans l'art antérieur, l'utilisation d'un capteur de correction mesurant directement la deuxième grandeur physique était connue pour la correction de l'influence de la température ambiante sur le gain d'un amplificateur du capteur d'incendie.In the prior art, the use of a correction directly measuring the second quantity physics was known for correcting the influence of the ambient temperature on the gain of an amplifier of the fire sensor.
Le capteur de correction employé pour cela était une thermistance qui était associée à l'amplificateur susmentionné, les caractéristiques de cette thermistance étant choisies de façon à compenser le mieux possible les variations de gain de l'amplificateur en fonction de la température.The correction sensor used for this was a thermistor which was associated with the aforementioned amplifier, the characteristics of this thermistor being chosen to compensate for variations as best as possible amplifier gain as a function of temperature.
Toutefois, cette approche ne permettait qu'une correction approximative, dans la mesure où il était impossible d'adapter exactement les caractéristiques de la thermistance aux caractéristiques de l'amplificateur.However, this approach only allowed one approximate correction, insofar as it was impossible to adapt the characteristics of the thermistor with amplifier characteristics.
Par ailleurs, pour compenser l'influence de grandeurs physiques perturbatrices autres que la température, il était connu par exemple d'inclure dans le dispositif de détection un deuxième capteur d'incendie soumis à la deuxième grandeur physique mais non aux conditions d'un incendie éventuel, de façon à déterminer l'influence de la deuxième grandeur physique seule sur le signal de mesure. Cette approche était toutefois coûteuse, puisqu'elle obligeait à doubler le capteur d'incendie.Furthermore, to compensate for the influence of quantities disruptive physical other than temperature it was known for example to include in the detection a second fire sensor subject to the second physical quantity but not on the conditions of a possible fire, so as to determine the influence of the second physical quantity only on the measurement signal. This approach was costly, however, since it required to double the fire sensor.
De plus, le document EP-A-0 418 409 décrit un dispositif de détection d'incendie comportant à la fois un capteur d'incendie et au moins un capteur de correction qui sont reliés tous les deux à une même unité centrale programmable pour lui transmettre respectivement les signaux de mesure et de correction.In addition, document EP-A-0 418 409 describes a fire detection device comprising both a fire sensor and at least one correction sensor which are both connected to the same programmable central unit to transmit the signals of measurement and correction.
Dans le dispositif de détection d'incendie divulgué par ce document, l'unité centrale est programmée pour compenser numériquement le signal de mesure en fonction du signal de correction, en calculant ainsi une valeur corrigée du signal de mesure.In the disclosed fire detection device by this document, the central unit is programmed to digitally compensate the measurement signal according to the correction signal, thereby calculating a corrected value of the measurement signal.
Mais cette correction est complexe, puisque d'une part la valeur corrigée est en général une fonction non linéaire à la fois du signal de mesure et du signal de correction, et d'autre part le signal de mesure varie dans une plage de valeurs assez grande.But this correction is complex, since from a share the corrected value is generally a non-function linear of both the measurement signal and the correction, and on the other hand the measurement signal varies in a fairly large range of values.
De plus, cette correction implique une surcharge du fonctionnement de l'unité centrale, puisqu'à chaque acquisition du signal de mesure, il faut également acquérir le signal de correction et calculer la valeur corrigée. Cette surcharge est d'autant plus sensible que le calcul de la valeur corrigée est complexe.In addition, this correction involves an overload of the operation of the central unit, since with each acquisition of the measurement signal, you must also acquire the correction signal and calculate the corrected value. This overload is all the more sensitive as the calculation of the corrected value is complex.
La présente invention a notamment pour but de remédier aux inconvénients susmentionnés.The object of the present invention is in particular to remedy the aforementioned drawbacks.
A cet effet, selon l'invention, un dispositif de détection d'incendie du genre en question est essentiellement caractérisé en ce que l'unité centrale a en mémoire des moyens de correction donnant, en fonction de la valeur du signal de correction, une valeur i0 dite normale du signal de mesure en l'absence d'incendie, et l'unité centrale étant programmée pour :
- déterminer la valeur normale i0 du signal de mesure en fonction de la valeur du signal de correction, à partir desdits moyens de correction,
- et déterminer l'existence d'un incendie lorsque le signal de mesure n'est pas compris entre i0 - Δ1 et i0 + Δ2, où Δ1 et Δ2 sont des valeurs prédéterminées.
- determining the normal value i0 of the measurement signal as a function of the value of the correction signal, from said correction means,
- and determining the existence of a fire when the measurement signal is not between i0 - Δ1 and i0 + Δ2, where Δ1 and Δ2 are predetermined values.
Ainsi, le fonctionnement de l'unité centrale est allégé puisque :
- le calcul de la valeur i0 est plus simple que le calcul d'une valeur corrigée du signal de mesure (d'une part, le calcul de la valeur i0 ne dépend que du signal de correction et pas du signal de mesure, et d'autre part, la valeur i0 subit des variations beaucoup moins grandes que le signal de mesure, de sorte que l'ajustement de la valeur i0 peut être beaucoup plus fin qu'une correction du signal de mesure),
- et le calcul de la valeur i0 peut éventuellement (mais non obligatoirement) être fait moins fréquemment que l'acquisition du signal de mesure, du fait que la valeur i0 varie en général lentement.
- the calculation of the value i0 is simpler than the calculation of a corrected value of the measurement signal (on the one hand, the calculation of the value i0 depends only on the correction signal and not on the measurement signal, and on the other hand, the value i0 undergoes much smaller variations than the measurement signal, so that the adjustment of the value i0 can be much finer than a correction of the measurement signal),
- and the calculation of the value i0 can possibly (but not necessarily) be made less frequently than the acquisition of the measurement signal, since the value i0 generally varies slowly.
Dans des modes de réalisation préférés de l'invention, on a recours en outre à l'une et/ou à l'autre des dispositions suivantes :
- les moyens de correction en mémoire de l'unité centrale sont constitués par une table de correspondance;
- les moyens de correction en mémoire de l'unité centrale sont constitués par un algorithme;
- la deuxième grandeur physique est la température ambiante ;
- le capteur d'incendie est un capteur ionique, et la deuxième grandeur physique est l'humidité ambiante ;
- le capteur d'incendie est un capteur ionique, et la deuxième grandeur physique est la pression ambiante ;
- le signal de mesure est influencé par plusieurs deuxièmes grandeurs physiques, le dispositif comportant plusieurs capteurs de correction reliés chacun à l'unité centrale pour lui transmettre chacun un signal de correction ayant une valeur représentative d'une des deuxièmes grandeurs physiques, les moyens de correction en mémoire dans l'unité centrale donnant la valeur normale i0 du signal de mesure en fonction des valeurs des signaux de correction, et l'unité centrale étant programmée pour déterminer la valeur normale du signal de mesure en fonction des valeurs des signaux de correction à partir desdits moyens de correction.
- the correction means in memory of the central unit consist of a correspondence table;
- the correction means in memory of the central unit are constituted by an algorithm;
- the second physical quantity is the ambient temperature;
- the fire sensor is an ion sensor, and the second physical quantity is the ambient humidity;
- the fire sensor is an ion sensor, and the second physical quantity is the ambient pressure;
- the measurement signal is influenced by several second physical quantities, the device comprising several correction sensors each connected to the central unit for transmitting each a correction signal having a value representative of one of the second physical quantities, the correction means stored in the central unit giving the normal value i0 of the measurement signal as a function of the values of the correction signals, and the central unit being programmed to determine the normal value of the measurement signal as a function of the values of the correction signals to from said correction means.
D'autres caractéristiques et avantages de l'invention apparaítront au cours de la description détaillée suivante d'une de ses formes de réalisation, donnée à titre d'exemple non limitatif, en regard des dessins joints.Other characteristics and advantages of the invention will appear during the detailed description following of one of its embodiments, given as non-limiting example, with reference to the accompanying drawings.
Sur les dessins :
- la figure 1 est une vue schématique d'un système d'alarme incluant un dispositif de détection d'incendie selon l'invention, et
- la figure 2 représente un exemple de courbe de la valeur normale du signal de mesure généré par le capteur d'incendie en fonction du signal de correction généré par le capteur de correction du dispositif de la figure 1.
- FIG. 1 is a schematic view of an alarm system including a fire detection device according to the invention, and
- FIG. 2 represents an example of a curve of the normal value of the measurement signal generated by the fire sensor as a function of the correction signal generated by the correction sensor of the device in FIG. 1.
Comme représenté sur la figure 1, le détecteur
d'incendie 1 selon l'invention comporte une unité centrale
programmable constituée par un microprocesseur 2 qui
comporte au moins deux entrées analogiques 2a, 2b.As shown in Figure 1, the
La première entrée analogique 2a est reliée à un
capteur d'incendie 3 qui mesure une première grandeur
physique dont les variations permettent de détecter l'existence
d'un incendie au voisinage du capteur d'incendie. Ce
capteur d'incendie peut être par exemple un capteur ionique
de détection de fumée, ou éventuellement un capteur optique
de détection de fumée, ou autre.The first analog input 2a is connected to a
Le capteur d'incendie envoie à la première entrée analogique 2a du microprocesseur un signal électrique analogique i qui a une valeur (par exemple intensité ou tension) représentative de la première grandeur physique.The fire sensor sends to the first entry analog 2a microprocessor electrical signal analog i which has a value (e.g. intensity or voltage) representative of the first physical quantity.
Ce signal de mesure i est perturbé par au moins une deuxième grandeur physique différente de la première, par exemple par la température ambiante, ou encore par l'humidité ou la pression ambiantes dans le cas d'un capteur ionique.This measurement signal i is disturbed by at least one second physical quantity different from the first, by for example by ambient temperature, or by humidity or the ambient pressure in the case of a sensor ionic.
Pour corriger l'influence de cette deuxième grandeur
physique, le détecteur 1 comporte en outre un capteur de
correction 4 qui mesure la deuxième grandeur physique, et
qui est connecté à la deuxième entrée analogique 2b du
microprocesseur pour envoyer à ce microprocesseur un signal
électrique analogique , dit signal de correction, qui a une
valeur (par exemple intensité ou tension) représentative de
la deuxième grandeur physique.To correct the influence of this second quantity
Le microprocesseur 2 comporte une mémoire interne,
ou éventuellement il peut être relié à une mémoire externe,
auquel cas l'unité centrale est constituée par le microprocesseur
et sa mémoire externe. Dans cette mémoire est
stockée, sous la forme d'une table de valeurs, une courbe c
telle que celle représentée sur la figure 2, donnant, en
fonction du signal de correction , une valeur normale i0 du
signal de mesure en l'absence d'incendie.The
Le microprocesseur 2 est programmé pour déterminer
en permanence la valeur de i0 correspondant au signal de
correction et pour comparer le signal de mesure i à cette
valeur i0 : si le signal de mesure i n'est pas compris entre
iO - Δ1 et i0 + Δ2, où Δ1 et Δ2 sont des valeurs prédéterminées
(par exemple, Δ1 et Δ2 peuvent valoir 5 % de i0), le
microprocesseur 2 en déduit l'existence d'un incendie au
voisinage du détecteur 1, et transmet un signal d'alarme à
une unité centrale 5, par tout moyen de liaison connu, tel
que liaison à boucles de courant, liaison en bus, ...etc.
Eventuellement, lorsque le signal de mesure i est
perturbé par plusieurs grandeurs physiques autres que la
première grandeur physique, le détecteur 1 peut comporter
plusieurs capteurs de correction 4, 6 reliés chacun à une
entrée analogique 2b, 2c du microprocesseur 2, sans sortir
du cadre de l'invention.Optionally, when the measurement signal i is
disturbed by several physical quantities other than the
first physical quantity,
Dans ce cas, le microprocesseur 2 a en mémoire une
table de correspondance donnant, en fonction des signaux de
correction transmis par les différents capteurs de correction,
les valeurs normales i0 du signal de mesure en l'absence
d'incendie. Comme précédemment, le microprocesseur 2
calcule alors en permanence la valeur normale i0 du signal
de mesure et compare ensuite la valeur du signal de mesure
i reçu à son entrée analogique 2a à la valeur normale i0,
comme expliqué ci-dessus, pour déterminer s'il y a un
incendie.In this case, the
Dans tous les cas, au lieu d'utiliser une table de
correspondance, le calcul de la valeur normale i0 pourrait
être réalisé au moyen d'un algorithme mémorisé dans le
microprocesseur 2 ou dans une mémoire externe.In any case, instead of using a table
correspondence, the calculation of the normal value i0 could
be performed using an algorithm stored in the
Claims (7)
- A fire detector device (1) comprising a fire sensor (3) for measuring a first physical magnitude in which variation is indicative of the existence of a fire in the vicinity of the detector device, said fire sensor generating an analog electrical signal (i), referred to as a "measurement" signal, which signal has a value representative of the first physical magnitude, said measurement signal being influenced by at least one second physical magnitude other than the first physical magnitude, the device further including at least one correction sensor (4, 6) for measuring said second physical magnitude and generating at least one analog electrical signal () referred to as a "correction" signal, the value thereof being representative of the second physical magnitude, which correction signal serves to correct the influence of said second physical magnitude on the measurement signal, the fire and correction sensors (3, 4) being connected to a programmable CPU (2) respectively to convey the measurement and correction signals thereto, the device being characterized in that the CPU stores correction means in memory giving a "normal" value i0 for the measurement signal (i) in the absence of a fire as a function of the value of the correction signal (), and the CPU is programmed to:determine the normal value i0 of the measurement signal as a function of the value of the correction signal, on the basis of said correction means; anddetermine that a fire exists whenever the measurement signal does not lie in the range i0-Δ1 to i0+Δ2, where Δ1 and Δ2 are predetermined values
- A device according to claim 1, in which the correction means in the memory of the CPU (2) are constituted by a correspondence table.
- A device according to claim 1, in which the correction means in the memory of the CPU (2) are constituted by an algorithm.
- A device according to any preceding claim, in which the second physical magnitude is ambient temperature.
- A device according to any one of claims 1 to 3, in which the fire sensor is an ion sensor, and the second physical magnitude is ambient humidity.
- A device according to any one of claims 1 to 3, in which the fire sensor is an ion sensor, and the second physical magnitude is ambient pressure.
- A device according to any preceding claim, in which the measurement signal (i) is influenced by a plurality of second physical magnitudes, the device including a plurality of correction sensors (4, 6) each connected to the CPU (2) to convey respective correction signals () thereto having values representative of respective second physical magnitudes, the correction means in the memory of the CPU (2) giving the normal value i0 of the measurement signal (i) as a function of the values of the correction signals, and the CPU (2) being programmed to determine the normal value of the measurement signal as a function of the values of the correction signals by using said correction means.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9409471 | 1994-07-29 | ||
| FR9409471A FR2723235B1 (en) | 1994-07-29 | 1994-07-29 | FIRE DETECTION DEVICES INCLUDING A CORRECTION SENSOR |
| PCT/FR1995/001016 WO1996004631A1 (en) | 1994-07-29 | 1995-07-27 | Fire detection device with disruptive parameter correction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0772855A1 EP0772855A1 (en) | 1997-05-14 |
| EP0772855B1 true EP0772855B1 (en) | 1998-12-02 |
Family
ID=9465920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95926986A Expired - Lifetime EP0772855B1 (en) | 1994-07-29 | 1995-07-27 | Fire detection device with disruptive parameter correction |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0772855B1 (en) |
| JP (1) | JPH11509342A (en) |
| DE (1) | DE69506418D1 (en) |
| ES (1) | ES2126916T3 (en) |
| FR (1) | FR2723235B1 (en) |
| WO (1) | WO1996004631A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE59808963D1 (en) * | 1997-10-21 | 2003-08-14 | Siemens Ag | Space surveillance sensor |
| JP3724689B2 (en) * | 1998-10-30 | 2005-12-07 | ホーチキ株式会社 | Fire monitoring device and fire detector |
| JP3708727B2 (en) * | 1998-10-30 | 2005-10-19 | ホーチキ株式会社 | Fire detector and fire detection method |
| US7333129B2 (en) | 2001-09-21 | 2008-02-19 | Rosemount Aerospace Inc. | Fire detection system |
| US6958689B2 (en) | 2001-09-21 | 2005-10-25 | Rosemount Aerospace Inc. | Multi-sensor fire detector with reduced false alarm performance |
| JP4769933B2 (en) * | 2005-03-28 | 2011-09-07 | 国立大学法人 岡山大学 | Ion sensor and detector using the ion sensor |
| DE102010015467B4 (en) * | 2010-04-16 | 2012-09-27 | Winrich Hoseit | Fire detector for monitoring a room |
| EP4109429A1 (en) | 2021-06-21 | 2022-12-28 | Carrier Corporation | Operating an aspirating fire detector system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU573243B2 (en) * | 1983-08-12 | 1988-06-02 | Vision Systems Limited | Pollution detecting apparatus |
| DE58909561D1 (en) * | 1989-09-19 | 1996-02-15 | Siemens Ag | Method and device for taking climatic environmental influences on automatic fire detectors into account |
-
1994
- 1994-07-29 FR FR9409471A patent/FR2723235B1/en not_active Expired - Fee Related
-
1995
- 1995-07-27 WO PCT/FR1995/001016 patent/WO1996004631A1/en not_active Ceased
- 1995-07-27 JP JP8506248A patent/JPH11509342A/en active Pending
- 1995-07-27 EP EP95926986A patent/EP0772855B1/en not_active Expired - Lifetime
- 1995-07-27 ES ES95926986T patent/ES2126916T3/en not_active Expired - Lifetime
- 1995-07-27 DE DE69506418T patent/DE69506418D1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR2723235B1 (en) | 1996-10-18 |
| ES2126916T3 (en) | 1999-04-01 |
| EP0772855A1 (en) | 1997-05-14 |
| JPH11509342A (en) | 1999-08-17 |
| DE69506418D1 (en) | 1999-01-14 |
| FR2723235A1 (en) | 1996-02-02 |
| WO1996004631A1 (en) | 1996-02-15 |
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