EP4263282A1 - Procédé de détection de l'usure d'un coussin de siège et dispositif de détection associé - Google Patents
Procédé de détection de l'usure d'un coussin de siège et dispositif de détection associéInfo
- Publication number
- EP4263282A1 EP4263282A1 EP21851832.2A EP21851832A EP4263282A1 EP 4263282 A1 EP4263282 A1 EP 4263282A1 EP 21851832 A EP21851832 A EP 21851832A EP 4263282 A1 EP4263282 A1 EP 4263282A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cushion
- seat
- sensor
- wear
- thickness
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/002—Seats provided with an occupancy detection means mounted therein or thereon
- B60N2/0021—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/70—Upholstery springs ; Upholstery
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/0224—Non-manual adjustments, e.g. with electrical operation
- B60N2/0244—Non-manual adjustments, e.g. with electrical operation with logic circuits
- B60N2/0272—Non-manual adjustments, e.g. with electrical operation with logic circuits using sensors or detectors for detecting the position of seat parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/06—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable
- B60N2/07—Slide construction
- B60N2/0722—Constructive details
- B60N2/0727—Stop members for limiting sliding movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D33/00—Seats
- B61D33/0007—Details; Accessories
- B61D33/0035—Cushions or the like; Covers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D11/00—Passenger or crew accommodation; Flight-deck installations not otherwise provided for
- B64D11/06—Arrangements of seats, or adaptations or details specially adapted for aircraft seats
- B64D11/0647—Seats characterised by special upholstery or cushioning features
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/003—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring position, not involving coordinate determination
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/002—Seats provided with an occupancy detection means mounted therein or thereon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2210/00—Sensor types, e.g. for passenger detection systems or for controlling seats
- B60N2210/10—Field detection presence sensors
- B60N2210/14—Inductive; Magnetic field
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
Definitions
- TITLE Method for detecting the wear of a seat cushion and associated detection device
- the present invention relates, in general, to the prediction of the wear of a seat, in particular the wear of the cushion of a seat.
- the invention relates to a method for detecting the wear of a seat cushion as well as to an associated detection device, incorporated in the seat.
- Known devices make it possible to detect the presence of a passenger on a seat.
- a pressure layer is positioned on the upper face of the cushion and the analysis of the resulting pressure peaks makes it possible to deduce whether or not an individual is sitting on the seat.
- the object of the invention is therefore to remedy these drawbacks and to propose a simple and autonomous method for detecting the wear of the cushion of a seat.
- the determination of the state of wear of the cushion comprises the detection of an element to be detected disposed in the cushion at a distance from a sensor indicating a thickness of cushion less than the predetermined minimum threshold value, and therefore a cushion collapse.
- the determination of the wear of the cushion is carried out when the presence of a person on the seat is detected.
- the element to be detected is a magnet and the sensor is a sensor sensitive to the magnetic field of the magnet and reacting according to the proximity of the magnet, the sensor being able to be used according to a first level of detection to detect the presence of a passenger on the seat, and according to a second level of detection to detect the wear of the cushion according to the value of the magnetic field corresponding to the distance between the magnet and the sensor.
- the method may comprise the transmission of information signaling that the cushion is worn when a cushion thickness value less than the predetermined minimum threshold value is detected several times in a predetermined period of time, such as that one day.
- the invention also relates to a seat comprising a cushion of a seat back or of a seat cushion and a device for detecting the wear of the cushion, the detection device comprising means for determining the thickness of the cushion as a function a predetermined minimum threshold value of the cushion thickness below which the cushion is considered worn.
- the means for determining the thickness of the cushion comprise a sensor capable of detecting when an element to be detected arranged in the cushion is at a distance indicating a thickness of the cushion less than a predetermined minimum threshold value, and therefore a sagging of the cushion.
- the element to be detected is a magnet and the sensor is a sensor sensitive to the magnetic field of the magnet and reacting according to the proximity of the magnet.
- the determination means can be configured to detect the presence of a passenger on the seat according to a first detection level, and to detect the wear of the cushion according to a second detection level according to the value of the magnetic field corresponding to the distance between the magnet and the sensor. The same sensor then makes it possible, via different levels of detection, to detect the presence of a passenger on the seat and the wear of the cushion.
- the senor is a Hall effect sensor.
- the element to be detected is a mechanical part and the sensor is an electromechanical sensor reacting according to the proximity of the mechanical part.
- the sensor can be fixed at the level of the seat base.
- the cushion wear detection device comprises means for detecting the presence of a person on the seat, the operation of the means for determining the thickness of the cushion being dependent on the presence of a person sitting on the seat.
- the invention also relates to an aircraft comprising one or more seats as previously described.
- FIG 1 illustrates a seat cushion in good condition incorporating a wear detection device according to a first embodiment of the invention
- FIG 2 illustrates a worn seat cushion incorporating a wear detection device according to a first embodiment of the invention
- FIG 3 illustrates a seat cushion in good condition incorporating a cushion wear detection device according to a second embodiment of the invention
- FIG 4 illustrates a worn seat cushion incorporating a wear detection device according to a second embodiment of the invention
- FIG 5 illustrates the steps of a method for detecting the wear of a seat cushion of a seat according to the invention.
- Figures 1 and 2 illustrate an aircraft seat comprising a seat
- the cushion 1 comprising a cushion 2, on which a passenger P is seated.
- the detection of wear on the seat cushion 1 of the seat will therefore be considered.
- the invention also applies to the detection of the wear of a cushion arranged on the back of the seat, or of any other cushion of a seat liable to wear.
- the invention can be applied to any other type of seat such as, for example, an automobile seat or any other land or air transport vehicle seat, train, bus, for which an autonomous detection of the wear is particularly advantageous.
- the illustrated seat incorporates a wear detection device intended to monitor the state of wear of the cushion 2. This device is advantageously used when a passenger is seated on the cushion.
- the detection device comprises means 3 for determining the thickness of the cushion 2.
- This minimum value S is predetermined and corresponds to a comfort threshold S . Tests may be carried out to determine the comfort threshold S, that is to say in order to determine from what thickness value of the cushion 2 it is considered that the latter no longer fulfills its comfort function for the passenger P.
- cushion 2 when the value of the thickness of cushion 2 is less than the predetermined minimum threshold value, cushion 2 is considered worn and uncomfortable. A replacement of cushion 2 should be considered.
- the cushion 2 is considered new or in good condition and performing its comfort function.
- the determination means 3 comprise a sensor and an element to be detected by the sensor.
- the element to be detected is arranged in the cushion 2 and the sensor is preferably fixed to the seat 1, for example under the seat 1, facing the element to be detected.
- the element to be detected is a magnet 4 and the sensor is a sensor sensitive to the magnetic field of the magnet, reacting according to the proximity of the magnet 4.
- the senor is a hall effect sensor 5.
- the illustrated cushion is a new cushion or in good condition.
- the element to be detected here the magnet 4
- the magnet 4 is placed in an initial position within the cushion 2 and the magnetic field of the magnet 4 perceived by the Hall effect sensor 5 has an initial value .
- the initial position of the element to be detected advantageously coincides with the comfort threshold S, that is to say that the element to be detected is arranged in the vertical plane passing through the comfort threshold S.
- the distance between the element to be detected and the sensor is an initial distance D l .
- the magnet deviates from its initial position.
- the element to be detected is then positioned at a distance D2 less than the initial distance D l .
- the sensor ensures the detection of the approximation of the element to be detected relative to the sensor, at a distance indicating a collapse of the cushion 2, where the thickness of the collapsed cushion 2 is less than the predetermined minimum threshold value S.
- the value of the magnetic field of the magnet 4 perceived by the hall effect sensor 5 is greater than the initial value in the configuration of FIG. 1, given the greater proximity between the magnet 4 and the hall effect sensor 5. Hall effect sensor 5 reacts to this approach of magnet 4.
- the value of the magnetic field detected by the sensor makes it possible to deduce the thickness of the cushion 2 and therefore its state of wear, by comparison with the comfort threshold S .
- the sensor and element to be detected assembly of the determination means 3 is a low power consumption assembly allowing the autonomous detection of the state of wear of the cushion 2.
- the wear detection device may comprise a transmission box, not shown, capable of transmitting the signal coming from the sensor to a management system of the aircraft cabin, in order to indicate to the on-board personnel that the cushion 2 is worn and must be replaced.
- the transmission can be carried out in wired or wireless mode.
- the transmission protocol can be Bluetooth, BLE, Lora, Sigfox, Zigbee, wifi or any other low power consumption transmission protocol.
- the signal can be transmitted to a suitable management system.
- the signal could be transmitted so as to receive an indication of the wear of the cushion 2 on the dashboard.
- the wear detection device which has just been described operates as follows.
- a first step 100 determination of the state of wear of cushion 2 by the wear detection device as a function of the predetermined minimum threshold value S of the thickness of cushion 2 below which the Cushion 2 is considered worn.
- the determination step 100 of the method for detecting the state of wear of the cushion 2 comprises the detection of an element to be detected, disposed in the cushion 2, at a distance from a sensor indicating a sag of cushion 2, the thickness of which is less than the predetermined minimum threshold value S .
- a first step we first proceed to the detection of a passenger on the seat.
- sensor 5 determines the position of magnet 4
- the sensor and the element to be detected correspond respectively to magnet 4 and hall effect sensor 5.
- the determination of the state of wear of the cushion 2 can be carried out empty, that is to say when no passenger P is seated on the seat 1.
- wear is meant the sagging of the cushion 2 when empty.
- the determination of the state of wear of the cushion 2 is carried out when the seat is loaded, that is to say when a passenger P is seated on the seat.
- wear we mean the collapse of the cushion 2 under load.
- the thickness determined by the detection device such as the thickness E1 of a cushion 2 in good condition or the thickness E2 of a worn cushion 2, respectively illustrated in FIGS. 1 and 2, are thicknesses of the cushion 2 when a passenger P is seated on the seat, that is to say the thickness of the cushion 2 remaining under load.
- the minimum threshold value S of the thickness of cushion 2 is therefore considered when a passenger is seated on the seat.
- the operation of the means 3 for determining the thickness of the cushion 2 can then advantageously be adapted to be dependent on the presence of a person seated on the seat.
- the device Illustrated detection comprises means for detecting the presence of a person on the seat.
- the Hall effect sensor 5 makes it possible to define different detection levels according to the value of the magnetic field corresponding to the distance between the magnet 4 and the Hall effect sensor 5.
- the effect sensor assembly hall 5 and magnet 4 can be used, according to a first level, to detect the presence of a passenger P on the seat then, according to a second level, to detect the wear of the cushion 2.
- the detection device when the detection device detects, in a step 200, a cushion 2 thickness, under load, less than or equal to the comfort threshold S associated with a worn cushion 2, the detection device can emit, in a successive step 300 , an instruction indicating that cushion 2 is worn and an instruction to replace cushion 2.
- the state of wear of the cushion 2 is determined several times within a predetermined period of time. Preferably, the state of wear is determined several times in one day. This makes it possible to reflect the state of wear of the cushion 2 independently of the morphology of the passengers P, that is to say regardless of their height or their diverence.
- a cushion 2 can thus be considered worn when the comfort threshold S is exceeded several times in a predetermined period of time such as, in this example, one day.
- the hall effect sensor 5 may be replaced by another sensor sensitive to the magnetic field or to a metal, such as a reed switch or else by a capacitive sensor .
- the element to be detected is a mechanical part 6 and the sensor is an electromechanical sensor 7 reacting according to the proximity of the mechanical part.
- the illustrated sensor is a mechanical switch 7 and the element to be detected is a plate.
- the mechanical part 6 is initially placed in the cushion 2, new or in good condition, of the seat, illustrated in FIG. 3, at a distance DI from the mechanical switch 7 remaining in the open position.
- the closed position of the mechanical switch 7 is associated with a worn state of the cushion 2.
- the illustrated detection method makes it possible, via reliable means, inexpensive and easy to integrate into a seat, to predict or detect the wear of a cushion by direct measurement.
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2013385A FR3117454B1 (fr) | 2020-12-16 | 2020-12-16 | Procédé de détection de l’usure d’un coussin de siège et dispositif de détection associé |
| PCT/FR2021/052352 WO2022129795A1 (fr) | 2020-12-16 | 2021-12-16 | Procédé de détection de l'usure d'un coussin de siège et dispositif de détection associé |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4263282A1 true EP4263282A1 (fr) | 2023-10-25 |
Family
ID=75539419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21851832.2A Pending EP4263282A1 (fr) | 2020-12-16 | 2021-12-16 | Procédé de détection de l'usure d'un coussin de siège et dispositif de détection associé |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20240051434A1 (fr) |
| EP (1) | EP4263282A1 (fr) |
| FR (1) | FR3117454B1 (fr) |
| WO (1) | WO2022129795A1 (fr) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10829220B2 (en) * | 2015-11-04 | 2020-11-10 | Safran Seats | Aircraft cabin management system |
| FR3085812B1 (fr) * | 2018-09-06 | 2020-10-09 | Zodiac Aero Electric | Systeme de collecte et de transmission de donnees relatives a l'etat de fonctionnement d'equipements d'une cabine d'aeronef |
| DE102019203979A1 (de) * | 2019-03-22 | 2020-09-24 | Greiner Aerospace Gmbh | Sitzkissen für einen Flugzeugsitz mit integrierter Sensorelektronik |
-
2020
- 2020-12-16 FR FR2013385A patent/FR3117454B1/fr active Active
-
2021
- 2021-12-16 US US18/267,087 patent/US20240051434A1/en active Pending
- 2021-12-16 EP EP21851832.2A patent/EP4263282A1/fr active Pending
- 2021-12-16 WO PCT/FR2021/052352 patent/WO2022129795A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| US20240051434A1 (en) | 2024-02-15 |
| WO2022129795A1 (fr) | 2022-06-23 |
| FR3117454A1 (fr) | 2022-06-17 |
| FR3117454B1 (fr) | 2023-05-12 |
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