Tamper detection system for a resealable storage container

Abstract

A tamper detection system, in particular for a lifejacket storage container (10) on board of a passenger aircraft (A), comprising: a receptacle (4) having an access opening with a closable lid (7); a first electrically conductive monitoring pad (1) formed on the closable lid (7); a second electrically conductive monitoring pad (2) formed on the receptacle (4); a sealing member (3) formed of a non-conductive material and comprising two pieces of electrically conductive adhesive on the bottom side of two opposite edges of the sealing member and at least one electrically conductive element guided within the non-conductive material between the two pieces of electrically conductive adhesive, the two pieces of electrically conductive adhesive of the sealing member being applied to the first and second electrically conductive monitoring pads (1; 2), respectively; and a monitoring system (5) electrically coupled to the first and second electrically conductive monitoring pads (1; 2) and configured to measure an electrical parameter associated with an electrically conductive path (C1, C2, CS) formed by the first and second electrically conductive monitoring pads (1; 2) and the at least one electrically conductive element within the sealing member (3).

Description

Technical Field

[0001] This invention relates to a tamper detection system for resealable storage containers, particularly for life vest storage containers on aircraft. Furthermore, this invention relates to a method for detecting tampering incidents at resealable storage containers, such as life vest storage containers on aircraft. Background Technology

[0002] For safety reasons, crew members on passenger aircraft are required to check the presence and readiness of all life vests before takeoff. Life vests are stored in containers or bags with a single opening through which they can be placed or removed. Once a life vest is placed in the container, the opening is sealed. These seals are visually inspected by the crew. If the seal is damaged, the life vest must be inspected and replaced if necessary.

[0003] Document US 2009 / 0309722 A1 discloses a currency package capable of detecting and transmitting tampering, the currency package comprising: a container having a volume configured to hold monetary articles (e.g., coins, checks, and negotiable instruments); a sensor configured to detect opening of the container; means coupled to the sensor and configured to store data in response to the sensor detecting opening of the container; and a transmitter configured to wirelessly transmit the stored data.

[0004] Document US 2013 / 0187630 A1 discloses a sensor in the form of an elongated flexible strip having a signal path made of wires or optical fibers extending between one end of the strip and the other. By enclosing the volume of interest with the sensor strip, the sensor strip can be used to detect intrusion or departure from the protected volume space.

[0005] Document CN 200965711 Y discloses an electric life vest anti-theft alarm. The life vest anti-theft alarm is placed in a suitable position under the seat of a civil aircraft so that when someone takes the life vest without authorization, the insulating card is pulled out from the plastic shell fixed to the outer packaging bag of the life vest, the two control electrodes come into contact with each other, triggering the alarm circuit in the plastic shell and driving the buzzer to sound an alarm.

[0006] The aim is to reduce the inspection process that will be performed by the flight crew, thereby reducing turnaround time, i.e., the time required between two flights. Summary of the Invention

[0007] One of the objectives of this invention is to find an improved solution for a system for detecting theft or manipulation of resealable storage containers, particularly life vest storage containers on passenger aircraft.

[0008] This and other objectives are achieved by a tamper detection system having the features of claim 1, by a distribution method having the features of claim 10 for detecting tampering events at a resealable storage container, and by the use of a conductive one-way sealing member having the features of claim 15 for sealing resealable storage containers, particularly on aircraft.

[0009] According to a first aspect of the invention, a tamper detection system includes: a receiver having an access opening with a closable cover; a first conductive monitoring pad formed on the closable cover; a second conductive monitoring pad formed on the receiver; a sealing member formed of a non-conductive material and including two pieces of conductive adhesive on the underside of two opposing edges of the sealing member, and at least one conductive element guided within the non-conductive material between the two pieces of conductive adhesive, the two pieces of conductive adhesive of the sealing member being applied to the first and second conductive monitoring pads, respectively; and a monitoring system electrically coupled to the first and second conductive monitoring pads and configured to measure electrical parameters associated with a conductive path formed by the first and second conductive monitoring pads and the at least one conductive element within the sealing member.

[0010] According to a second aspect of the invention, a method for detecting tampering events at a resealable storage container includes: bonding a sealing member to a first conductive monitoring pad and a second conductive monitoring pad, the sealing member being formed of a non-conductive material and including two pieces of conductive adhesive on the underside of two opposing edges of the sealing member, and at least one conductive element guided within the non-conductive material between the two pieces of conductive adhesive, the first conductive monitoring pad being formed on a closable lid of the resealable storage container, and the second conductive monitoring pad being formed on a receiver of the resealable storage container; electrically coupling a monitoring system to the first and second conductive monitoring pads; measuring an electrical parameter associated with a conductive path formed by the first and second conductive monitoring pads and the at least one conductive element within the sealing member; and outputting a tampering event signal through the monitoring system if the measured electrical parameter exceeds a predetermined tampering detection threshold.

[0011] According to a third aspect of the invention, an aircraft, particularly a passenger aircraft, includes at least one tamper detection system according to a first aspect of the invention. In some embodiments, the aircraft may have a plurality of such tamper detection systems and a group of a plurality of seats, wherein each of the plurality of tamper detection systems is implemented under a corresponding seat among the plurality of seats.

[0012] According to a fourth aspect of the invention, a one-way sealing member is used to seal the inlet and outlet opening of a resealable storage container on an aircraft. The sealing member comprises a non-conductive material having an ultimate tensile strength lower than the tearing force that a passenger on the aircraft could exert. The sealing member includes two conductive adhesives on the bottom sides of two opposing edges, and at least one conductive path guided within the non-conductive material between the two conductive adhesives.

[0013] One of the basic ideas of this invention is to reliably detect tampering or manipulation events of a resealable storage container, so that even after a tampering or manipulation event has occurred, the opening and reclosing of the storage container by an unauthorized person can be traced. For this purpose, a one-way sealing member can be placed on two adjacent components of a closable inlet / outlet opening. The one-way sealing member includes an embedded conductive path connecting two opposite side edges of the sealing member, each resting on a conductive contact pad of one of the two adjacent components of the closable inlet / outlet opening. The placement of the one-way sealing member between the conductive contact pads of the two adjacent components establishes a low-impedance path. Access to the inlet / outlet opening requires removal or otherwise damage to the sealing member, thereby disrupting the low-impedance path.

[0014] Because the sealing element is constructed as a single-use product, the destruction of the low-impedance path during a tampering or manipulation event is irreversible; that is, re-establishing the low-impedance path typically requires the placement of a new one-way sealing element.

[0015] A particular advantage of the solution according to the invention stems from the fact that disruption of a low-impedance path can be detected by measuring electrical parameters associated with the presence (or absence) of the low-impedance path, which in turn allows the determination of the presence (or absence) of a tampering or manipulation event via electrical measurements. Such measurements can be advantageously automated, enabling remote inspection of the integrity of the inlet and outlet openings of previously sealed, resealable storage containers.

[0016] In the case of life vest storage containers located beneath passenger seats in passenger aircraft, these containers can be sealed with one-way seals and equipped with internal measurement systems. Each life vest storage container's internal measurement system can continuously, intermittently, and / or as needed monitor the integrity of the low-impedance path established by the corresponding seal. Depending on the results of this monitoring, each internal measurement system can report the monitoring findings to the aircraft's central data processing facility, thereby making it easier for the crew to locate life vest storage containers that may have been tampered with, without requiring visual inspection.

[0017] Furthermore, the solution according to the invention is capable of tracking tampering or manipulation events, even when the internal measurement system is temporarily powered down, such as during a stopover of the aircraft. Since the sealing member is irreversibly damaged in the event of a tampering or manipulation event, the change in impedance in the electrical path provided by the previously intact sealing member will be detectable once the internal measurement system is powered again.

[0018] Advantageous configurations and modifications will be understood from the further dependent claims and from the description with reference to the accompanying drawings.

[0019] According to some embodiments of the tamper detection system, the life jacket can be placed inside a storage container.

[0020] According to some embodiments of the tamper detection system, the non-conductive material of the sealing member can be paper, cardboard, polypropylene, polyethylene, cellophane, or any other suitable flexible material with relatively low ultimate tensile strength. According to some further embodiments of the tamper distribution system, at least one conductive element of the sealing member is a metal wire.

[0021] In some embodiments, the monitoring system may be configured to measure the impedance of a conductive path formed by a first conductive monitoring pad, a second conductive monitoring pad, and at least one conductive element within the sealing member. In some variations, the monitoring system may be configured to output a tampering event signal if the measured impedance is higher than a tampering detection threshold. For example, the monitoring system may be configured to output the tampering event signal via a wireless communication link and / or via a wired data bus. Tampering event signals from multiple tampering detection systems associated with different storage containers may be collected at a central processing entity, enabling centralized and remote monitoring of which of these storage containers may have been subjected to a tampering or manipulation event.

[0022] In some embodiments, the monitoring system may be configured to output a tampering event signal if the measured impedance is higher than a tampering detection threshold, and the tampering event signal may be transmitted to a signaling device installed near the storage container. The signaling device may be, for example, an acoustic signaling device (e.g., a buzzer or signal buzzer), a visual signaling device (e.g., one or more colored LEDs, a small display, or a similar lighting device), or any combination of such signaling devices.

[0023] According to some embodiments, a signaling device can be implemented in the power supply system of the seat assembly, with the tamper detection system installed near the seat assembly. For example, existing signaling devices in the power supply system of the seat assembly (e.g., a usage indicator) can be used to additionally indicate tamper events generated by the monitoring system.

[0024] According to some further embodiments of the stealth attack detection system, the monitoring system may be powered by the power supply system of the aircraft's seat assembly. In this embodiment, the monitoring system may include a first signaling device for outputting an indication of a stealth attack event signal generated by the monitoring system, which is powered independently of the seat assembly's power supply system. Furthermore, in several embodiments, a second signaling device may be provided, for example, as a software module on an electronic device used by the crew. This second signaling device may act as a centralized output of stealth attack event signals generated by monitoring systems distributed throughout the aircraft.

[0025] One of the advantages associated with implementing signaling devices near storage containers is the possibility of developing a backstab detection system at a relatively high Design Assurance Level (DAL). DAL categories are determined from safety assessment processes and hazard analyses that examine the impact of failure conditions in the system to be classified on the aircraft, crew, and passengers. Furthermore, if the indication of a backstab event signal is executed within the monitoring system, rather than relying on backstab event signals from other systems output to the outside of the monitoring system, then the backstab detection system can be classified in the DAL category independently of any adjacent system.

[0026] According to some further embodiments of the tamper detection system, opening the closable cover can cause the sealing member to break irreversibly. This one-way seal could be intentionally broken if a passenger needs to access the life vest storage container in an emergency.

[0027] According to some embodiments of the method, the non-conductive material of the sealing member can be paper, cardboard, polypropylene, polyethylene, cellophane, or any other suitable flexible material with relatively low ultimate tensile strength.

[0028] According to some further embodiments of the method, measuring electrical parameters may include measuring the impedance of a conductive path formed by a first conductive monitoring pad, a second conductive monitoring pad, and at least one conductive element within the sealing member. In some instances, if the closable cover is opened, resulting in irreversible rupture of the sealing member, the impedance of the conductive path may rise above a predetermined tamper detection threshold.

[0029] The above configurations and improvements can be combined with each other as needed and where appropriate. Further possible embodiments, improvements, and implementations of the invention also cover combinations of features of the invention not explicitly mentioned above or below with respect to these exemplary embodiments. In particular, those skilled in the art will also add various aspects as improvements or additions to the corresponding basic form of the invention. Attached Figure Description

[0030] The invention will now be discussed in more detail based on exemplary embodiments shown in the schematic diagrams. In the drawings:

[0031] Figure 1 A schematic diagram of a seat assembly in an aircraft having a tamper detection system for a life vest storage container according to an embodiment of the present invention is shown;

[0032] Figure 2 A resealable storage container with a tamper detection system on an aircraft (e.g., according to a further embodiment of the invention) is shown. Figure 1 A schematic diagram of the life jacket storage container shown.

[0033] Figure 3 An aircraft having a stealth detection system according to a further embodiment of the invention is shown; and

[0034] Figure 4 A further embodiment of the invention is shown for detecting resealable storage containers (e.g., Figure 1 A flowchart of a method for handling tampering events at a resealable container (as shown).

[0035] The accompanying drawings are intended to provide a better understanding of embodiments of the invention. The drawings illustrate embodiments and are used to explain the principles and concepts of the invention in conjunction with the description. Many other embodiments and advantages among the described advantages will emerge with reference to the drawings. Elements in the drawings are not necessarily shown to scale. Terms indicating direction, such as “top,” “bottom,” “left,” “right,” “above,” “below,” “horizontal,” “vertical,” “front,” “back,” and similar indications, are for illustrative purposes only and are not intended to limit the generality to the specific configuration shown in the drawings.

[0036] In the accompanying drawings, identical, functionally identical, and having the same function are indicated by the same reference numerals in each case, unless otherwise stated. Detailed Implementation

[0037] In the context of this invention, a vehicle seat includes any form of structural component of a vehicle designed to seat passengers during a journey using the vehicle. Specifically, during flight, vehicle seats in an aircraft can be for individual use and are at least primarily reserved for the aircraft's passengers. In the context of this invention, a seat or vehicle seat can be an aircraft seat divided into groups, or it can be a recliner, armchair, bed, a first-class or business-class suite, or similar seating furniture within the aircraft.

[0038] Figure 1A schematic diagram of a seat assembly 100 on an aircraft is shown. The seat assembly 100 may, for example, include passenger aircraft (e.g., Figure 3 A group of seats 20 in an aircraft A) is schematically shown. Here, each of the different seats 20 in the passenger aircraft may be equipped with a resealable storage container 10 beneath the seat, such as a life vest storage container 10 containing an emergency life vest 6. The aircraft seats 20 of the seat assembly 100 may each be attached to the cabin floor via attachment rails 22. An in-seat electrical distribution system 21 may be individually associated with each seat 20 or collectively associated with the seat assembly 100. The in-seat electrical distribution system 21 may, for example, have power supply components 23 configured to supply power to the seat assembly 100's... Figure 1 Power is supplied to electrical components not explicitly shown in the document (such as in-flight media entertainment systems, power plugs, or seat control elements).

[0039] Such as combination Figure 2 As shown in more detail, the storage container 10 includes a receiver 4 having an access opening with a closable cover 7. For example, a movable element of the closable cover 7, moved by a hinged movement P around the bottom of the receiver 4, can open the access opening to allow a passenger to access the interior of the receiver 4. A life vest 6 can be stored inside the receiver 4.

[0040] Although the stealth detection system is described in conjunction with the life vest storage container 10, other storage containers on the aircraft may also be equipped with stealth detection systems having one or more features as disclosed herein.

[0041] A first conductive monitoring pad 1 is formed on a closable cover 7, while a second conductive monitoring pad 2 is formed on a receiver 4. Conductive monitoring pads 1 and 2 are each electrically coupled to a monitoring system 5 via corresponding coupling lines C1 and C2. The monitoring system 5 may include, for example, a microcontroller, an ASIC, or an FPGA.

[0042] The sealing member 3 is formed of a non-conductive material, such as paper or a similar flexible material with low ultimate tensile strength, such as cardboard, polypropylene, polyethylene, cellophane, or any other suitable flexible material. The sealing member 3 is designed to irreversibly rupture at the rupture line R if the closable cover 7 is opened. Specifically, the ultimate tensile strength may be lower than the tearing force that a passenger on the aircraft can exert, so that in an emergency, a passenger can easily access the interior of the life vest storage container 10.

[0043] On the two opposite edges of the sealing member 3, conductive adhesive is formed in sheets on the underside of the sealing member 3. These sheets are located in positions where they can make electrical contact with corresponding conductive monitoring pads in conductive monitoring pads 1 and 2. The sealing member 3 further includes at least one conductive element, such as one or more thin metal wires or a layer of metal material coated on the non-conductive material, guided within the non-conductive material between the two sheets of conductive adhesive. The conductive elements(s) realize conductive paths C1, C2, CS formed by the first conductive monitoring pad 1, the second conductive monitoring pad 2, and at least one conductive element within the sealing member 3.

[0044] The monitoring system 5 can be implemented to measure the electrical parameters associated with this conductive path C1, C2, CS. If the sealing member 3 remains intact, the impedance of this conductive path C1, C2, CS will be relatively low. On the other hand, if the sealing member 3 is damaged or broken due to a tampering or manipulation event, the conductive elements within the sealing member 3 will be damaged or severed, resulting in a relatively high impedance of the conductive path C1, C2, CS.

[0045] When a measured electrical parameter (e.g., impedance) exceeds the tamper detection threshold, such as when the measured impedance exceeds the tamper detection threshold, the monitoring system 5 can output a tamper event signal. This tamper event signal can be output, for example, via a wireless communication link W and / or via a wired data bus T. In the case of the wired data bus T, tamper event signals from multiple monitoring systems 5 can be collected by a network of the power supply system 21 of the seat assembly 100 and transmitted to a central processing facility, such as the crew information panel on the aircraft. The power supply system 21 of the seat assembly 100 of the aircraft A can also provide power to the monitoring system 5 of the storage container 10.

[0046] The monitoring system 5 can transmit a tampering event signal to a signaling device installed near the receiver 4 of the storage container 10. This signaling device can be, for example, an acoustic signaling device (e.g., a buzzer or signal buzzer), a visual signaling device (e.g., one or more colored LEDs, a small display, or similar lighting), or any combination of such signaling devices. The signaling device can be implemented in the power supply system 12 of the seat assembly 100, with the tampering detection system installed near the seat assembly. For example, existing signaling devices in the power supply system 12 (e.g., a usage indicator) can be used to additionally indicate the tampering event signal generated by the monitoring system 5.

[0047] Monitoring system 5 can be configured to continuously or intermittently measure electrical parameters associated with conductive paths C1, C2, and CS. Once a tampering event is detected, the detection event can be internally stored in monitoring system 5 until monitoring system 5 is externally polled to report any detected tampering events. In the case of life vest storage container 10, this polling can be initiated by the crew during flight preparation. For example, electronic devices used by crew members (e.g., tablets or smartphones) can be equipped with software modules that function as signaling devices indicating tampering event signals output by monitoring system 5. Such electronic devices can then act as centralized outputs of tampering event signals generated by monitoring systems 5 distributed throughout aircraft A.

[0048] Figure 4 A storage container for testing resealable properties is shown (e.g., as in combination). Figure 1 and Figure 2 A flowchart of the method steps for method M regarding the tampering incident at the indicated and explained resealable storage container 4). Method M can advantageously be used in aircraft (e.g., such as... Figure 3 The method is performed on the aircraft A exemplarily depicted in the illustration. Specifically, the method M can be used to detect unauthorized opening or manipulation events at the life vest storage container 4 below the passenger seat 20 of the passenger aircraft A.

[0049] In the first step M1, a sealing member 3 made of a non-conductive material (e.g., paper or any other flexible material with relatively low ultimate tensile strength) is bonded to a first conductive monitoring pad 1 formed on a closable lid 7 of a resealable storage container 10 and a second conductive monitoring pad 2 formed on a receiver 4 of the resealable storage container 10. The sealing member 3 includes two pieces of conductive adhesive on the underside of two opposite edges of the sealing member 3, and at least one conductive element (e.g., one or more metal wires) guided within the non-conductive material between the two pieces of conductive adhesive.

[0050] In the second step M2, the monitoring system 5 is electrically coupled to the first conductive monitoring pad 1 and the second conductive monitoring pad 2. Then, in the third step M3, the monitoring system 5 can measure electrical parameters, such as impedance, associated with the conductive paths C1, C2, CS formed by the first conductive monitoring pad 1, the second conductive monitoring pad 2, and at least one conductive element within the sealing member 3.

[0051] If the measured electrical parameters exceed the predetermined tamper detection threshold (e.g., when the closable cover 7 has been opened, causing the sealing member 3 to break irreversibly), then the monitoring system 5 outputs a tamper event signal in the fourth step M4.

[0052] To enhance the rigor of the representation, various features are combined in one or more examples described in detail above. However, it should be understood that the above description is merely illustrative and not restrictive in any way. The above description is intended to cover all alternatives, modifications, and equivalents of the various features and exemplary embodiments. Given the above description, many other examples will be immediately and directly apparent to those skilled in the art based on their technical knowledge.

[0053] The exemplary embodiments were chosen and described in order to best represent the principles upon which the invention is based and its possible uses in practice. As a result, experts can optimally modify and use the invention and its various exemplary embodiments for their intended purposes. In the claims and the specification, the terms "comprising" and "having" are used as neutral concepts corresponding to the term "including." Furthermore, the use of the terms "a" and "an" is not intended to fundamentally exclude the plurality of features and components described in this manner.

Claims

1. A tamper detection system for a life vest storage container (10) on a passenger aircraft (A), comprising: Storage container (4), the storage container having an inlet and outlet opening with a closable cover (7); A first conductive monitoring pad (1) is formed on the closable cover (7); The second conductive monitoring pad (2) is formed on the receiver (4); A sealing member (3) is formed of a non-conductive material and includes two conductive adhesives on the bottom sides of two opposite edges of the sealing member, and at least one conductive element guided between the two conductive adhesives within the non-conductive material, the two conductive adhesives of the sealing member being applied to the first and second conductive monitoring pads (1; 2), respectively. as well as A monitoring system (5), electrically coupled to the first and second conductive monitoring pads (1; 2) and configured to measure electrical parameters associated with a conductive path (C1, C2, CS) formed by the first and second conductive monitoring pads (1; 2) and the at least one conductive element within the sealing member (3), Opening the closable cover (7) causes the sealing member (3) to rupture irreversibly.

2. The unauthorized opening detection system according to claim 1, wherein, The life jacket (6) is placed inside the storage container (4).

3. The tamper detection system according to claim 1 or 2, wherein, The non-conductive material of the sealing component (3) is paper, cardboard, polypropylene, polyethylene or glassine paper.

4. The tamper detection system according to claim 1 or 2, wherein, At least one conductive element of the sealing member is a metal wire (3).

5. The tamper detection system according to claim 1 or 2, wherein, The monitoring system (5) is configured to measure the impedance of the conductive path (C1, C2, CS) formed by the first and second conductive monitoring pads (1; 2) and the at least one conductive element within the sealing member (3).

6. The unauthorized opening detection system according to claim 5, wherein, The monitoring system (5) is configured to output a stealth event signal if the measured impedance is higher than the stealth detection threshold.

7. The unauthorized opening detection system according to claim 6, wherein, The monitoring system (5) is configured to output the tampering event signal to a signaling device installed near the receiver (4).

8. The tamper detection system (10) according to claim 6, wherein, The monitoring system (5) is configured to output the tampering event signal via a wireless communication link (W) and / or via a wired data bus (T).

9. The tamper detection system according to claim 1 or 2, wherein, The monitoring system (5) is powered by the power supply system (21) of the seat assembly (100) of the aircraft (A).

10. A method (M) for detecting an unauthorized opening event at a resealable life vest storage container (10) on a passenger aircraft (A), the method (M) comprising: A sealing member (3) is bonded (M1) to a first conductive monitoring pad (1) and a second conductive monitoring pad (2). The sealing member is formed of a non-conductive material and includes two pieces of conductive adhesive on the bottom side of two opposite edges of the sealing member (3) and at least one conductive element guided between the two pieces of conductive adhesive within the non-conductive material. The first conductive monitoring pad is formed on a closable lid (7) of the resealable storage container (10), and the second conductive monitoring pad is formed on a receiver (4) of the resealable storage container (10). The monitoring system (5) is electrically coupled (M2) to the first and second conductive monitoring pads (1; 2); Measurement (M3) is associated with electrical parameters of the conductive path (C1, C2, CS) formed by the first and second conductive monitoring pads (1; 2) and the at least one conductive element within the sealing member (3); as well as If the measured electrical parameters exceed the predetermined tamper detection threshold, then the monitoring system (5) outputs a tamper event signal (M4). Opening the closable cover (7) causes the sealing member (3) to rupture irreversibly.

11. The method (M) according to claim 10, wherein, The non-conductive material of the sealing component (3) is paper, cardboard, polypropylene, polyethylene or glassine paper.

12. The method (M) according to claim 10 or 11, wherein, Measuring the electrical parameters (M3) includes measuring the impedance of the conductive path (C1, C2, CS) formed by the first and second conductive monitoring pads (1; 2) and the at least one conductive element within the sealing member (3).

13. The method (M) according to claim 12, wherein, If the closable cover (7) is opened, causing the sealing member (3) to break irreversibly, then the impedance of the conductive path (C1, C2, CS) rises above the predetermined tamper detection threshold.

14. An aircraft (A) having at least one tamper detection system (10) according to any one of claims 1 to 9.

15. Use of a one-way sealing member (3) for sealing the inlet and outlet opening of a resealable storage container (4) on an aircraft (A), said one-way sealing member (3) comprising: The material is non-conductive, and the ultimate tensile strength of the non-conductive material is lower than the tearing force that a passenger on the aircraft can exert. Two pieces of conductive adhesive on the bottom sides of the two opposite edges of the one-way sealing member (3); as well as At least one conductive path is guided within the non-conductive material between the two conductive adhesive sheets. The inlet / outlet has a closable cover (7), and opening the closable cover (7) causes the one-way sealing member (3) to rupture irreversibly.

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