EP1890956B1 - Method and system for managing thermal energy in a building with duct for lifting installations - Google Patents

Abstract

The invention concerns an energy management method in a building including a lifting installation with a mobile car in a shaft and a ventilation passage between the shaft and the atmosphere. The method includes the monitoring of at least one state parameter of the lifting installation; the evaluation, in a control unit, of the necessity to ventilate the shaft based on at least one state parameter; the switching of an obturator element associated with the ventilation passage from an open position, wherein the ventilation passages is essentially open, to a closed position, wherein the ventilation passages is at least partially obturated, only when the evaluation indicates that ventilation of the shaft is not required, the obturator element being prestressed in its open position. The invention also concerns an energy management system designed to implement the method according to. The present method and system are particularly suitable for installation of a lift in a low-energy or passive building.

Description

The present invention relates to a method and a system for managing thermal energy, in particular for energy saving, in a building with one or more ducts for lifting installations such as, for example, elevators, goods lifts or dumbwaiters. , especially in a low-energy building.

Such a building generally comprises a sheath vertically crossing different levels of the building. For safety reasons, ventilation of the duct is necessary, for example in the case where a person is locked in an elevator car or in the duct. Ventilation of the sheath is also advantageous in order to avoid excessive heating of the upper part of the sheath, in which temperature-sensitive technical equipment can be found. In addition, the sheath must comply with all legal provisions in force.

The ventilation of the sheath is also made compulsory by various laws in force in a large number of countries. For example, in accordance with EN 81-1 and EN 81-2, transposed by Directive CE / 95/16 into national law in all member countries of the European Community, lift shafts must have adequate ventilation. In case of absence of regulations or appropriate standards, it is recommended to fit at the top of the duct, ventilation holes, with a minimum area of 1% of the horizontal section of the duct. In addition EN 81-1 / EN81-2 prohibits the use of the duct for ventilation of premises other than those specific to the elevator. In many countries, governments require other ventilation surfaces of elevator shafts to address other specific risks. In the Grand Duchy of Luxembourg, for example, a ventilation area of at least 2.50% of the horizontal section sheath is mandatory to allow in addition, in case of fire, a smoke extraction of the sheath.

There are several patents that manage various specific situations of forced fan ventilation in case of fire or smoke in a building ( US 5,718,627 , DE 198 56 193 , EP 0 995 995 , DE 299 06 399 ). These systems use, unlike EN 81-1 / EN 81-2 article 5.2.3 "Ventilation of the duct", the elevator duct as a smoke escape route for other premises of the building. The ventilation passage in these systems is kept closed, which is also contrary to the legal provisions of several countries. The ventilation passage is only open when a hazardous situation, such as a fire, is detected.

Apart from the legal provisions, there are also economic and ecological issues to consider. Indeed, any ventilation of the sheath leads to a source of significant heat losses. Indeed, as the doors between the duct and the different levels of the building can not be airtight throughout the building, heat loss through the duct is inevitable even in case of simple natural ventilation of the duct. Such heat loss is to be avoided, especially in low energy buildings. Indeed, the heat loss is usually so important that the installation of an elevator in low energy or passive buildings is made impossible.

One solution to avoid this loss of heat, is for example to dislodge the sheath outside the thermal envelope of the building. However, the displacement of the sheath is often not desired or not possible. Another solution would be for example the construction of a sealed airlock around the sheath and access to the sheath. The construction of such an airlock however entails very high costs.

Object of the invention

The object of the present invention is to propose a method and system for managing thermal energy in a building with a duct for heating installations. lifting, in which the thermal loss is reduced, without having the disadvantages of the aforementioned solutions.

General description of the invention

• la surveillance d'au moins un paramètre d'état de l'installation de levage, la surveillance d'au moins un paramètre d'état comprenant la surveillance de la présence d'une personne dans l'installation de levage et/ou la surveillance d'un mouvement de la cabine dans la gaine ;
• l'évaluation, dans une unité de gestion, de la nécessité de ventilation de la gaine sur base dudit au moins un paramètre d'état, l'unité de gestion concluant la nécessité de ventilation de la gaine lorsque la présence d'une personne est détecté et/ou lorsque le mouvement de la cabine est détecté ; et
• le basculement d'un élément obturateur associé audit passage de ventilation d'une position d'ouverture, dans laquelle le passage de ventilation est essentiellement ouvert, dans une position de fermeture, dans laquelle le passage de ventilation est au moins partiellement obturé, uniquement lorsque l'évaluation indique qu'une ventilation de la gaine n'est pas requise, l'élément obturateur étant précontraint dans sa position d'ouverture.

According to the invention, this object is achieved by a method of thermal energy management, in particular of energy saving, as described in claim 1. A building with a lifting installation comprises a mobile cabin in a sheath and a ventilation passage between the sheath and the atmosphere. According to the invention, the energy management method comprises the following steps:

• monitoring at least one state parameter of the hoisting plant, monitoring at least one state parameter including monitoring the presence of a person in the hoisting plant and / or monitoring a movement of the cabin in the sheath;
• the evaluation, in a management unit, of the need for ventilation of the sheath on the basis of said at least one state parameter, the management unit concluding the need for ventilation of the sheath when the presence of a person is detected and / or when the motion of the car is detected; and
• the tilting of a shutter element associated with said ventilation passage from an open position, in which the ventilation passage is essentially open, into a closed position, in which the ventilation passage is at least partially closed, only when the evaluation indicates that ventilation of the sheath is not required, the shutter element being prestressed in its open position.

This method closes the ventilation passage and thus prevents heat loss through the duct and the ventilation passage. Thus, the process can, under certain conditions, meet the requirements of energy saving by avoiding a loss of heat, while still remaining in compliance with the legal, technical and safety requirements. Before switching the shutter element to the closed position, the method indeed verifies whether the state of the hoisting installation allows the closure of the ventilation passage. then the operation of the hoisting installation the duct must be ventilated and the shutter element will therefore be kept in its open position. It is clear that legal and technical requirements take precedence over thermal energy management requirements and that the shutter element is switched to Closed position only when legal and technical requirements permit.

In addition, by avoiding heat losses through the ventilation passage of a sheath, the method according to the invention allows the installation of an elevator in a low-energy or passive building.

The shutter member is tilted to the closed position in the presence of a positive instruction from the operating system and, as soon as this positive instruction is no longer present, the shutter member switches back to its open position. In case of power failure or system failure set up to perform the process, the ventilation passage is thus necessarily open.

Monitoring of at least one status parameter may include monitoring the presence of a person in the cabin, on the roof of the cabin or in the duct. When the presence of a person is detected, the management unit deduces that the duct must be ventilated. The presence of a person in the cabin indicates the operation of the lifting equipment, in which case the legislation provides for the need to ventilate the sheath. The management unit ensures that the shutter member is held in its open position. The presence of a person in a cabin, on the roof of a cabin or in the duct may be detected by an independent system or provided by the operation of the hoisting installation itself.

Monitoring of at least one state parameter may include monitoring of a movement of the cabin in the duct. When the movement of the cabin is detected, the management unit deduces that the duct must be ventilated. The movement of the cabin indicates the operation of the hoisting installation, in which case the legislation provides for the need to ventilate the duct. This information can be provided by an independent system or by the operation of the hoisting plant itself. The management unit ensures that the shutter member is held in its open position.

The management unit may conclude that ventilation of the duct is not necessary when no presence of persons in the cabin, on the roof of the car or in the elevator shaft is detected; no movement of the cabin is detected. In this case, it can be deduced that the hoisting installation is not used. In this case, duct ventilation is not dictated by legal or technical requirements. The shutter element is then free to be tilted to its closed position to at least partially seal the ventilation passage. This can lead to heat conservation in the building, allowing among other things the installation, until now impossible, of an elevator in a building low energy or passive.

• la surveillance d'au moins un paramètre de contrôle;
• l'évaluation de l'opportunité d'obturer le passage de ventilation sur base de l'au moins un paramètre de contrôle; et
• le basculement de l'élément obturateur dans sa position de fermeture lorsque l'unité de gestion conclue la non-nécessité de ventilation de la gaine; et lorsque l'évaluation indique que l'obturation du passage de ventilation est opportun.

The energy saving method may, according to a preferred embodiment, further comprise the following steps:

• monitoring at least one control parameter;
• evaluating the opportunity to close the ventilation passage based on the at least one control parameter; and
• the tilting of the shutter element in its closed position when the management unit concludes the non-necessity of ventilation of the sheath; and when the assessment indicates that the closure of the ventilation passage is appropriate.

When no legal or technical requirement prohibits the closing of the ventilation passage, the method makes it possible to evaluate the opportunity to close the ventilation passage. The present method makes it possible to switch the shutter element in the closed position only in the case where such a closure is authorized and desired. When the closing of the ventilation passage is authorized, the management of the thermal energy of the building is possible by the tilting of the shutter element between its open and closed positions. By closing the ventilation passage, heat losses from the building at the level of the ventilation passage can be reduced, thus leading to energy savings.

• la température à l'intérieur du bâtiment ;
• la température à l'intérieur de la gaine ;
• la présence d'une personne sur un palier d'un niveau du bâtiment ;
• la température à l'extérieur du bâtiment ;
• la vitesse du vent à l'extérieur du bâtiment ; et
• le taux de radiation solaire à l'extérieur du bâtiment. II est à noter que cette liste n'est pas exhaustive. L'évaluation de ces paramètres peut, même en cas d'autorisation de fermeture sous respect des exigences légales et techniques, mener à la décision de garder le passage de ventilation ouvert. Tel peut être le cas en été quand la température dans le bâtiment est largement supérieure à la température ambiante souhaitée, et la température à l'extérieur inférieure à la température dans le bâtiment

Monitoring at least one control parameter preferably includes monitoring at least one of the following parameters:

• the temperature inside the building;
• the temperature inside the sheath;
• the presence of a person on a landing of a building level;
• the temperature outside the building;
• the wind speed outside the building; and
• the solar radiation rate outside the building. It should be noted that this list is not exhaustive. The evaluation of these parameters can, even in the event of a closure authorization in compliance with legal and technical requirements, lead to the decision to keep the ventilation passage open. This may be the case in summer when the temperature in the building is much higher than the desired room temperature, and the outdoor temperature below the temperature in the building

Advantageously, the method furthermore comprises storing, in a storage unit, state parameters, the position of the shutter element and, if necessary, control parameters, thus enabling the correct operation of the operating system to be verified. the process. The stored data may, for example after an incident, be used to prove that the hoisting installation complied with the legislation.

• un élément obturateur associé au passage de ventilation, l'élément obturateur étant mobile entre une position d'ouverture, dans laquelle le passage de ventilation est essentiellement ouvert, et une position de fermeture, dans laquelle le passage de ventilation est au moins partiellement obturé ;
• un moyen de précontrainte afin de maintenir, dans un état passif, l'élément obturateur dans sa position d'ouverture; et
• une unité de gestion contrôlant la position de l'élément obturateur, l'unité de gestion comprenant des moyens pour surveiller au moins un paramètre d'état de l'installation de levage, et pour évaluer la nécessité de ventilation de la gaine, l'unité de gestion ne permettant le basculement de élément obturateur en position de fermeture uniquement lorsque l'évaluation de la nécessité de ventilation indique qu'une ventilation de la gaine n'est pas requise, les moyens pour surveiller au moins un paramètre d'état de l'installation de levage comprenant au moins un moyen pour détecter la présence d'une personne dans l'installation de levage et/ou au moins un moyen pour détecter le mouvement de la cabine dans la gaine, l'unité de gestion concluant la nécessité de ventilation de la gaine lorsque la présence d'une personne est détectée et/ou lorsque le mouvement de la cabine est détecté.

The present invention also relates to a system according to claim 9, implemented to operate the above method. Such a thermal energy management system, in particular an energy saving system, in a building comprising a lifting installation with a mobile cabin in a duct and a ventilation passage between the duct and the atmosphere comprises in outraged :

• a shutter member associated with the ventilation passage, the shutter member being movable between an open position, in which the ventilation passage is substantially open, and a closed position, wherein the ventilation passage is at least partially closed off;
• prestressing means for maintaining, in a passive state, the shutter member in its open position; and
• a management unit controlling the position of the shutter member, the management unit comprising means for monitoring at least one state parameter of the hoisting installation, and to evaluate the need for ventilation of the duct, the management unit allowing the shutter member to tilt in the closed position only when the evaluation of the need for ventilation indicates that a ventilation of the sheath is not required, the means for monitoring at least one state parameter of the hoisting installation comprising at least one means for detecting the presence of a person in the lifting installation and / or at least one means for detecting the movement of the cabin in the duct, the management unit concluding the need for ventilation of the duct when the presence of a person is detected and / or when the movement of the cabin is detected.

Description using the figures

Other features and characteristics of the invention will emerge from the detailed description of an advantageous embodiment presented below, by way of illustration, with reference to FIG. Fig.1 annexed, which shows a schematic section through a building with elevator comprising a thermal energy management system according to the invention.

On the Fig.1 is represented a building 10 with several levels 12, 12 ', 12 ", 12"'. A hoisting installation 13, in this case an elevator installation, is arranged vertically in the building 10 so as to interconnect the different levels 12, 12 ', 12 ", 12"' of the building 10. Such an installation comprises a sheath 14 in which is mounted a cabin 16 connected to a motor (not shown) which raises and lowers the cabin 16 in the sheath 14.

The cabin 16 comprises a cabin door 18 which opens with a landing door 20, 20 ', 20 ", 20"' respectively of the level 12, 12 ', 12 ", 12"' at which the cabin 16 stops to allow access between the cab 16 and the respective level 12, 12 ', 12 ", 12"'.

A ventilation passage 22 connects the sheath 14 with the atmosphere through the roof 24 of the building 10. In accordance with the European legislation in force, this ventilation passage 22 has a cross section corresponding to at least 1% of the cross section of the building. sheath 16.

Generally, the cabin doors 18 and landing 20, 20 ', 20 ", 20"' are not waterproof and therefore allow an exchange of air between the sheath 14 and the various levels 12, 12 ', 12 ", 12 ". The ventilation passage 22 in turn allows an exchange of air between the sheath 14 and the atmosphere through the roof 24 of the building 10. With the air exchange between the different levels 12, 12 ', 12 ", 12 "'and the atmosphere there is also an exchange of thermal energy, which, especially during a cold period, results in a significant cooling of the sheath and thus a heat loss in the building 10.

According to the present invention, a shutter member 30, such as for example a valve or a valve, is associated with the ventilation passage 22 and can switch between an open position and a closed position. In the open position, the shutter member 30 maintains the ventilation passage 22 open thus allowing the exchange of air between the sheath 14 and the atmosphere. In the closed position, the shutter member 30 at least partially closes the ventilation passage 22, thereby maintaining the heat inside the building 10, thus avoiding unnecessary heat loss.

For security reasons, the shutter member 30 is normally held in the open position and is tilted to the closed position only when conditions permit. Thus, in case of power failure, respectively in case of failure of the system, the ventilation of the sheath 14 will necessarily be provided. A management unit 32 is provided for evaluating the state parameters and deciding on the tilting of the shutter member 30 in the closed position. A management unit 32 is designed to handle the tilting of the shutter member 30 in accordance with the law, i.e. to ensure that the sheath 14 is ventilated as prescribed by law and technical requirements. .

For safety reasons and to be in compliance with the legislation, the shutter element 30 must for example be in the open position in case of operation of the elevator. An elevator is considered to be operated if the cabin 16 is in motion or if a person is in the sheath 14. The movements in the sheath 14 can be detected by the presence of a motion sensor 34 on the cabin roof 16 or of a movement sensor 34 'at the head of the sheath, by a first presence sensor 36 in the cabin 16 or by a second presence sensor 38 in the pit of the sheath 14. When the movement of the cabin 16, or the presence of a person in or on the roof of the cabin is detected by the motion sensors 34 and 34 'or the presence of a person is detected by the first or second presence detector 36, 38, the management unit 32 deduces from the signals provided by these sensors 34, 34 '36, 38 that the ventilation of the sheath 14 is necessary and therefore ensures that the shutter member 30 is in the open position.

A first temperature sensor 42 is further installed in the upper portion 44 of the sheath 14. This first temperature sensor 42 detects the temperature in an area in which there may be technical equipment sensitive to temperature. The first temperature sensor 42 is connected to the management unit 32 and provides a signal indicative of the detected temperature. On the basis of the signal supplied by the first temperature sensor 42, the management unit 32 can keep the shutter element 30 in the open position in the event of excessive heating of the upper portion 44 of the sheath 14, thereby protecting the installed technical equipment. in this area. A second temperature sensor 48 may be used to distinguish between periods of hot and cold. During warm periods, the heat loss may be absent or desired, and the shutter member 30 may be managed according to the ventilation and cooling requirements of the building. During cold periods, generally in winter, shutter member 30 is preferably tilted to its closed position to avoid otherwise considerable heat loss. The installation of an elevator has until now generally been accompanied by a loss of heat in winter, making for example the installation of an elevator in a building with low energy or passive impossible. With the method of the present invention, however, this heat loss is avoided and the installation of an elevator in such a building low energy or passive is made possible.

When the cabin 16 is stopped and the cabin is not occupied by a person and no one is in the sheath 14, the ventilation of the sheath 14 is not necessary since the installation is not necessary. not exploited. In this situation, the shutter member 30 may, if appropriate, be tilted to its closed position.

With the shutter element 30 in the closed position, the ventilation passage 22 is at least partially closed, preferably completely closed, and the air exchange between the sheath 14 and the atmosphere is reduced or even avoided. This leads to a lower heat loss and thus to an energy saving within the building 10.

• des capteurs de température 46, 46', 46", 46"' sur les différents niveaux 12, 12', 12", 12"' à l'intérieur du bâtiment 10,
• un capteur de température 48 à l'extérieur du bâtiment 10,
• un capteur de radiation solaire 50 à l'extérieur du bâtiment 10,
• un capteur de vitesse de vent 52 à l'extérieur du bâtiment 10, et
• des troisièmes détecteurs de présence 54, 54', 54", 54"' sur les différents niveaux 12, 12', 12", 12"' à intérieur du bâtiment 10.

The opportunity to switch the shutter member 30 to the closed position can be evaluated by the management unit 32 on the basis of several sensors. Among these sensors, one can count, in a non-exhaustive way:

• temperature sensors 46, 46 ', 46 ", 46"' on the different levels 12, 12 ', 12 ", 12"' inside the building 10,
• a temperature sensor 48 outside the building 10,
• a solar radiation sensor 50 outside the building 10,
• a wind speed sensor 52 outside the building 10, and
• third presence detectors 54, 54 ', 54 ", 54"' on the different levels 12, 12 ', 12 ", 12"' inside the building 10.

To further improve the security of the energy management system, the management unit 32 may optionally include two redundant central units 32, 32 '. The management unit 32, respectively the central units, can be provided with backup batteries to ensure the proper functioning of the system in case of power failure.

Bidirectional communication, for example digital or by frequency, is provided between the management unit 32 and the shutter element 30, thus making it possible to control the shutter element 30 and to collect feedback on the position of the element shutter 30. Thus, the management unit is capable of transmitting to an information unit 56 an indication of the position of the shutter member 30. Visual or audible indicators may be used to indicate the open state of the shutter member. ventilation passage 22 and the operating state of the system.

The management unit 32 may be of the modular type in order to flexibly host several types of interface with the peripheral equipment of a complex entourage or of the fixed type in order to limit itself to a limited number of peripheral equipment.

The management unit 32 can be equipped with all the interfaces to be incorporated in the management and the technical management of buildings, this by means of any available support such as for example the BUS or EIB technique. The management unit 32 may be equipped with a central unit under EPROM or any other preprogrammed support as well as a freely programmable random access memory according to the needs and obligations of the client. The management unit 32 may have standardized or programmable interfaces for the possible direct connection with the operation of the elevator informing on the status of the elevator. The various elements as sensors, shutter element and detectors can be connected to the management unit 32 by means of electric cables of any kind, radio waves, optical fibers, wireless, LED, infrared, induction fields or any other means of communication.

It should be noted that a hoisting installation can generally also comprise a technical room. In this case, ventilation of the sheath can be done through a ventilation passage connected to the technical room, which is connected to it. sheath. In the context of the present application, such a technical room is considered an integral part of the sheath. For example, the presence of a person in the technical room is equivalent to the presence of a person in the duct and ventilation of the duct can be provided by its ventilation passage, even if the technical room is placed between the duct and the ventilation passage to the atmosphere.

Apart from the fact that the present thermal energy management method and system contribute to energy saving in new and existing buildings, they are particularly suitable for the installation of an elevator in a low energy building or passive.

Claims (15)

1. Thermal energy management method in a building (10) comprising a lifting installation (13) with a mobile car (16) in a shaft (14) and a ventilation passage (22) between said shaft (14) and the atmosphere, said method comprising the following steps:

   the monitoring of at least one state parameter of said lifting installation (13); said monitoring of at least one state parameter comprising the monitoring of the presence of a person in said lifting installation (13) and/or the monitoring of a movement of said car (16) in said shaft (14);

   the evaluation, in a control unit (32), of the necessity to ventilate said shaft (14) based on these parameters, said control unit (32) concluding to the necessity to ventilate said shaft (14) when the presence of a person is detected and/or when the movement of said car (16) is detected;

   the switching of an obturator element (30) associated with said ventilation passage (22) from an open position, wherein the ventilation passage (22) is essentially open, to a closed position, wherein the ventilation passage (22) is at least partially obturated, only when said evaluation indicates that ventilation of said shaft (14) is not required, said obturator element (30) being prestressed in its open position
2. Method according to Claim 1, wherein the monitoring of the presence of a person in said lifting installation (13) comprises the monitoring of the presence of a person in said car (16), on the roof of the car or in said shaft (14)
3. Method according to any one of Claims 1 or 2, wherein said control unit (32) concludes to the non-necessity to ventilate said shaft (32), when

   no presence of a person in said car (16), on the roof of the car or in said shaft (14) is detected; and

   no movement of said car (16) is detected.
4. Method according to any one of Claims 1 to 3, further comprising the following steps:

   the monitoring of at least one control parameter;

   the evaluation of the usefulness of obturating said ventilation passage (22) based on said at least one control parameter;

   the switching of said obturator element (30) in its closed position when said control unit (32) concludes to the non-necessity to ventilate said shaft (32), and when said evaluation indicates that obturation of said ventilation passage (22) is useful
5. Method according to Claim 4, wherein the monitoring of at least one control parameter comprises the monitoring of at least one parameter chosen from the group comprising:

   - the temperature inside the building (10);

   - the temperature inside the shaft (14);

   - the presence of a person on a landing of a level (12, 12', 12", 12"') of the building (10);

   - the temperature outside the building (10);

   - the wind speed outside the building (10); and

   - the level of solar radiation outside the building (10)
6. Method according to any one of Claims 1 to 5 further comprising the memorization, in a storage unit, of said state parameters, of said control parameters and of the position of said obturator element (30).
7. Method according to any one of Claims 1 to 6 further comprising the communication of information on the position of the obturator element (30) and/or on the operating state of the control unit (32).
8. Thermal energy management system in a building comprising a lifting installation (13) with a mobile car (16) in a shaft (14) and a ventilation passage (22) between said shaft (14) and the atmosphere, said system further comprising:

   an obturator element (30) associated with said ventilation passage (22), said obturator element (30) being mobile between an open position, wherein the ventilation passage (22) is essentially open, and a closed position, wherein the ventilation passage (22) is at least partially obturated;

   a prestressing means for maintaining, in a passive state, said obturator element (30) in its open position; and

   a control unit (32) controlling the position of said obturator element (30), said control unit (32) comprising means for monitoring at least one state parameter of said lifting installation (13) and for evaluating the necessity to ventilate said shaft (14), said control unit (32) only allowing switching of said obturator element (30) to a closed position when the evaluation of the necessity to ventilate said shaft (14) indicates that ventilation of said shaft (14) is not required, said means for monitoring at least one state parameter of said lifting installation (13) comprising at least one means for detecting the presence of a person in said lifting installation (13) and/or at least one means for detecting movement of said car (16) in said shaft (14), said control unit (32) concluding to the necessity to ventilate said shaft (14) when the presence of a person is detected and/or when movement of said car (16) is detected
9. System according to Claim 8, wherein said means for detecting the presence of a person in said lifting installation (13) comprises at least one presence sensor (34, 34', 36, 38) in said car (16), the roof of the car or said shaft (14).
10. System according to Claim 8 or 9, wherein said means for detecting movement of said car (16) in said shaft (14) comprises at least one movement sensor (34, 34')
11. System according to any one of Claims 8 to 10 further comprising at least one control parameter sensor, said control unit (32) comprising means for evaluating the usefulness of obturating said ventilation passage (22) based on said at least one control parameter.
12. System according to Claim 11, wherein said at least one control parameter sensor is chosen from the group comprising:

    - a temperature sensor (46, 46', 46", 46"') inside the building (10);

    - a temperature sensor inside the shaft (14);

    - a presence sensor (54, 54', 54", 54''') for a person on a landing of a level (12, 12', 12", 12"') of the building (10);

    - a temperature sensor (48) outside the building (10);

    - a wind speed sensor (52) outside the building (10); and

    - a solar radiation level sensor (50) outside the building (10)
13. System according to any one of Claims 8 to 12, wherein said control unit (32) comprises at least two redundant central processing units.
14. System according to any one of Claims 8 to 13 further comprising a storage unit, said storage unit memorizing said state parameters, the position of the obturator element (30) and, if applicable, said control parameters
15. System according to any one of Claims 8 to 14 further comprising an information unit (56) signalling the position of the obturator element (30) and/or the operating state of the control unit (32)

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