EP0868131A1 - Dispositifs detecteurs de presence d'objet dans une enceinte de stockage, notamment un mini-bar, et systeme de telecollecte associe - Google Patents
Dispositifs detecteurs de presence d'objet dans une enceinte de stockage, notamment un mini-bar, et systeme de telecollecte associeInfo
- Publication number
- EP0868131A1 EP0868131A1 EP96934918A EP96934918A EP0868131A1 EP 0868131 A1 EP0868131 A1 EP 0868131A1 EP 96934918 A EP96934918 A EP 96934918A EP 96934918 A EP96934918 A EP 96934918A EP 0868131 A1 EP0868131 A1 EP 0868131A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- detector device
- capacitive
- electrodes
- capacitive detection
- electronic processing
- 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.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B69/00—Cocktail cabinets
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/02—Mechanical actuation
- G08B13/14—Mechanical actuation by lifting or attempted removal of hand-portable articles
- G08B13/149—Mechanical actuation by lifting or attempted removal of hand-portable articles with electric, magnetic, capacitive switch actuation
Definitions
- the present invention relates to devices for detecting the presence of objects in a storage enclosure, in particular a mini-bar . It also targets a remote data collection system from these detection devices. Hotel operators are particularly aware of the growing problems linked to the management of mini-bar parks. They encounter both difficulties in making correct invoices for consumption which are very often established on the basis of erroneous consumption data supplied by the customers themselves at the end of their stay or noted by employees, and difficulties to efficiently manage a daily replenishment of these mini-bars. In addition, they would like to be able to adjust the prices of the drinks taken from the mini-bars according to the type of customer and specific events.
- mini-bar models equipped with devices for detecting the presence of a feeler object, which however have the drawback of being sensitive to shocks and of including mechanical parts for producing contactors which in the long run may become deteriorate.
- infrared detector devices which have the drawback of having a detection response which is sometimes sensitive to the external characteristics of the object to be detected, in particular the color of their packaging, and of implementing optical fiber links which in the long run encounter problems of reliability of connections.
- the object of the invention is to remedy these drawbacks by proposing a device for detecting the presence of objects in a storage enclosure, in particular a mini-bar, which provides more information than the mere presence or absence information. object, while being more solid, less sensitive to the external environment and at a lower cost than the detection devices currently proposed.
- This device for detecting the presence of an object in a storage enclosure comprises a set of capacitive detection modules each comprising two electrodes disposed near a support intended to receive an object and an oscillating circuit including the capacity between these two electrodes, these electronic processing means cooperating with each capacitive detection module to deliver detection signals indicative of the presence or absence of objects on each of said supports.
- the electronic processing means also cooperate with each capacitive detection module to provide a capacitive signature of the objects present in the storage enclosure.
- capacitive signature encompasses all information and measurements linked to the capacitive behavior of an object, whether in steady state (different capacities measured in the presence or absence of an object) or in dynamic regime (laws of capacity variation when picking up or dropping off an object).
- the capacitive signature of an object present in the storage enclosure includes information indicative of a modification of the geometric and / or volume characteristics of said object.
- the two electrodes of each capacitive detection module have a geometry designed to keep a limited and substantially linear variation of the detected capacity when an object is moved on said module capacitive detection.
- this geometry makes it possible to detect objects of variable size, in particular objects having a smaller contact surface than the support surface of the capacitive modules.
- each capacitive detection module comprises: a first electrode comprising an outer conductive ring, and inside this ring, at least a first and a third inner conductive sectors electrically connected to said ring external conductor, and
- a second electrode comprising, inside the outer conductive ring, a second and a fourth inner conductive sectors electrically connected to each other.
- the capacitive detection modules and the electronic processing means are preferably included in a sealed structure comprising connection means provided to cooperate with external connection means in order to transmit the detection signals.
- This embodiment allows easy cleaning of the detector devices which are generally subjected to frequent liquid stains.
- the detector device further comprises on its upper face recesses arranged as supports for receiving objects.
- a thin insulating layer is provided between the electrodes and the bottom of the recesses. This insulating layer is naturally present when the capacitive detection modules are included in a sealed structure made for example of resin.
- these recesses are of substantially cylindrical shape, but they could in fact have any shapes adapted to particular shapes of object, for example square or more generally polygonal, or even elliptical or oblong.
- a detector device is arranged in the form of a removable waterproof shelf intended to be inserted in place of a shelf in a refrigerator, in particular a mini-bar.
- This embodiment has the advantage of being able to equip existing refrigerators, and more particularly mini-bars, by offering possibilities of replacing these shelves with existing shelves placed in the main body of the refrigerator.
- connection means are arranged on a rear edge of this shelf so that, when said shelf is inserted, these connection means are interconnected with external connection means suitably arranged on the bottom of said refrigerator.
- the detector device according to the invention is designed to be placed against a lower face of an object support comprising several compartments, each capacitive detection module being associated with one of the compartments.
- the electronic processing means can be produced using known techniques and can advantageously integrate an ASIC circuit for processing and conditioning the signals from the capacitive modules.
- the electronic processing means are arranged to apply fuzzy logic rules to process frequency variations and produce a capacitive signature of the detected objects.
- a system for telecollecting data delivered by detector devices according to the invention installed in a set of storage enclosures comprising:
- each storage enclosure means for transmitting the detection data delivered by each detector device over a communication network
- the communication network used for the transmission of detection data can be the electrical network, the data then being transmitted by the carrier current technique, a telephone network, or even a radio network with or without coaxial support. This mode of transmission is particularly advantageous and economical since it requires no additional wiring.
- the detector devices and the remote collection system according to the invention can be advantageously applied to the remote management of mini-bars within a hotel.
- each mini-bar an electronic unit managing all the operations on this mini-bar, in particular the transmission of detection data and the control of the mini-bar door.
- an electromagnetic lock can be provided for each mini-bar, making it possible to control the opening and closing of the door.
- FIG. 1A shows a detection device according to the invention, in the form of a tablet
- - Figure IB shows a particular embodiment of a capacitive module
- - Figure 1C illustrates the case of an object to be detected moved relative to the center of a capacitive module
- - Figure 2 is a sectional view of a first embodiment of a capacitive module associated with a hollow support
- - Figure 3 is a sectional view of a second embodiment of a capacitive module included in a resin
- - Figure 4 is a partial view of a mini-bar provided with detector devices according to the invention
- - Figure 5 is a simplified diagram of an electronic processing unit associated with a capacitive module
- FIG. 6 is a block diagram of a remote collection system according to the invention.
- the detector device 1 is in the form of a tablet comprising for example ten capacitive detection modules 3 and including all of the processing electronics, as illustrated in Figure IA.
- This shelf has external dimensions allowing it to be inserted into a standard mini-bar by replacing it with a shelf.
- the detector device 1 comprises, with reference to FIG. 1, an upper face 2, made for example of epoxy, comprising recesses 14 of circular shape intended to receive on their bottom 15 the base of the bottles, cans and miniature bottles.
- the capacitive modules 3 each provided with a pair of electrodes 5, 6 separated by an inter-electrode space 7, are arranged at the bottom of the recesses 14.
- the electronic oscillation and processing circuits are integrated within the tablet which is provided with a connector 4 preferably arranged at a rear edge 16 of the tablet. It is otherwise possible to provide the tablet with a wire outlet provided at the end with a connector.
- each capacitive module can have the structure shown in FIG. 1B.
- a first electrode or armature 6 consists of an outer conductive circular ring 6a and two angular conductive sectors 6b, 6c located inside the ring 6a and electrically connected thereto by conductive bridges 6d, 6e.
- the second electrode or armature 5 consists of two other angular conductive sectors 5a, 5b located inside the ring 6a and electrically connected to each other by a conductive bridge 5c.
- the crown 6a and the four angular sectors 6b, 6c; 5a, 5b are separated from each other by an insulating inter-electrode space 7.
- This particular geometry has made it possible to obtain a substantially linear and limited variation in the capacity as a function of the movement of an object 10 relative to a central position on the capacitive module 3, when a situation such as that illustrated in FIG. 1C is encountered.
- the fact of being able to obtain a substantially linear variation of the detected capacity is essential to allow a satisfactory and reproducible identification of a detected object.
- a symmetrization of the capacitive module is obtained, the capacitance measured no longer depending on the relative angular position of the object with respect to the module.
- FIG. 2 which is a sectional view along AA of the tablet shown in FIG. 1
- the detector device 1 comprises, under the upper face 2, a non-conductive protective film 9, electrodes 5, ⁇ of very small thickness separated by a dielectric inter-electrode space 7, an insulating support plate 11 on the upper face of which are arranged the pairs of electrodes 5, 6 and on the lower face of which are placed electronic circuits of oscillation 8 associated with each capacitive detection module 3, and a lower plate 12, also made of epoxy.
- the electrodes 5, 6 preferably have a geometry providing a linear variation in the capacitance detected in the event of movement of an object, and are separated by the insulating inter-electrode space 7.
- the sectional view thus shows the conductive ring exterior 6a and the two angular sectors 6b, 6c of the first electrode 6, the conductive bridge 5c which connects the two angular sectors (not visible) of the second electrode 5, and sections of the inter-electrode space 7.
- the electrodes, the circuit support plate 31 and the electronic circuits 8 are included in a resin 32 so that a thin insulating layer separates the upper face 39 of the capacitive detection module of the two electrodes 35, 36.
- a resin 32 so that a thin insulating layer separates the upper face 39 of the capacitive detection module of the two electrodes 35, 36.
- the electrodes, the circuit support plate 31 and the electronic circuits 8 are included in a resin 32 so that a thin insulating layer separates the upper face 39 of the capacitive detection module of the two electrodes 35, 36.
- Electronic tablets 1, 100 such as those which have just been described are particularly suitable for being inserted in a mini-bar 40 in place of the usual shelves, as illustrated in FIG.
- detector devices 41, 47 designed to be placed against the underside of sup object ports 42, 48 existing in the interior face of the door 45 of the mini-bar 40.
- object supports are generally organized in several compartments 43, 49 receiving objects 44, for example miniature bottles.
- the detectors 41, 47 comprise as many capacitive modules as there are compartments.
- the oscillation and processing electronics 50 included in a detector device according to the invention can be produced in numerous ways by implementing techniques well known to those skilled in the art. Preferably, very rustic technical solutions will be preferred since these are only all-or-nothing detections and not capacity measurements.
- the oscillation electronics 54 can be produced from a NAND gate 52 with two inputs: a first input 56 receives an oscillation signal from a circuit 51 common to all modules capacitive of a tablet; the second input is connected on the one hand to the output 58 of the NAND logic gate 52 through a resistor 55, and on the other hand, to one 5 of the two electrodes of the capacitive module, the other electrode 6 being connected to ground.
- the capacity 53 between the two electrodes 5, 6 is thus included in an oscillating circuit whose oscillation frequency will depend on the value of this capacity which varies according to the presence or absence of an object in the vicinity of the inter-electrode space.
- an oscillation frequency of the order of 1.4 MHz can be observed in the absence of an object, this oscillation frequency dropping to around 0, 4 Mhz in the presence of an aluminum can on the capacitive module.
- the measured capacities can vary for example from 4 pF to 16 pF and the frequencies from 1 MHz to 60 kHz.
- the processing circuit 51 which can advantageously be produced in the form of an ASIC circuit possibly protected against copying, receives the output signals of each oscillating circuit associated with each module, ensures the detection of a possible variation in frequency d oscillation, as well as the transmission of detection data outside the tablet via the connector 4, to a central processing site.
- the processing circuit can advantageously include a microprocessor system programmed to apply the fundamental rules of fuzzy logic. This makes it possible in particular to control parasitic influences such as condensation on the capacitive modules or operator's hand effects.
- Data transmission can be carried out in several ways within a remote data collection system.
- a particularly advantageous embodiment consists in using the hotel's electrical network by implementing the conventional technique of transmission by carrier currents, such as illustrated in FIG. 6 representing a telecollection system S.
- Each mini-bar 40, 400 comprises an electronic device 60 for injecting the detection data on the electrical network 63 in the form of carrier currents at the level of the power supply module 61 of said mini-bar.
- a centralizing device 64 is provided for a group of chambers in order to receive and collect the detection data injected into the electrical network 63, and to transmit this collected data via a serial link 65, for example a 4-wire link of RS422 type, at a management station for the mini-bar system 66, for example a microcomputer, at a central management site 69 comprising computer means 68 for managing the hotel.
- the mini-bar management station 66 is preferably connected to the management computer means 68 in order to exchange useful information, such as registration, consumption, billing information, etc.
- the corresponding detector device delivers an absence detection signal which is transmitted to the operating station. Billing occurs in two situations: after closing the door, or after a time delay determined by the hotel operator. When the customer places the product in its place without closing the door before the expiration of this period, billing is not carried out.
- the invention is not limited to the examples which have just been described and numerous arrangements can be made to these examples without departing from the scope of the invention.
- the structure of the detector devices according to the invention according to the shape and the internal organization of the mini-bars.
- the materials constituting these detector devices may also vary depending on operating conditions and cost considerations.
- the oscillation and processing electronics can be designed in many other ways without departing from the scope of the present invention.
- the geometry of the electrodes of the capacitive modules can also be modified as a function of specific constraints linked to the nature of the objects to be detected.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Geophysics And Detection Of Objects (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Selective Calling Equipment (AREA)
- Measurement Of Radiation (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9512615A FR2739956B1 (fr) | 1995-10-17 | 1995-10-17 | Dispositifs detecteurs de presence d'objet dans une enceinte de stockage, notamment un mini-bar, et systeme de telecollecte associe |
FR9512615 | 1995-10-17 | ||
PCT/FR1996/001612 WO1997014335A1 (fr) | 1995-10-17 | 1996-10-16 | Dispositifs detecteurs de presence d'objet dans une enceinte de stockage, notamment un mini-bar, et systeme de telecollecte associe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0868131A1 true EP0868131A1 (fr) | 1998-10-07 |
EP0868131B1 EP0868131B1 (fr) | 1999-09-22 |
Family
ID=9483926
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96934918A Expired - Lifetime EP0868131B1 (fr) | 1995-10-17 | 1996-10-16 | Dispositifs detecteurs de presence d'objet dans une enceinte de stockage, notamment un mini-bar, et systeme de telecollecte associe |
Country Status (6)
Country | Link |
---|---|
US (1) | US6107928A (fr) |
EP (1) | EP0868131B1 (fr) |
AT (1) | ATE184762T1 (fr) |
DE (1) | DE69604421T2 (fr) |
FR (1) | FR2739956B1 (fr) |
WO (1) | WO1997014335A1 (fr) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6285967B1 (en) * | 1998-10-22 | 2001-09-04 | Dell Usa, L.P. | Troubleshooting computer systems during manufacturing using state and attribute information |
US6542079B1 (en) * | 2000-02-18 | 2003-04-01 | Robert A. Kahl, Sr. | Infrared detection and alarm system for bottom shelf of shopping cart |
KR100444707B1 (ko) * | 2000-08-14 | 2004-08-18 | 종 해 김 | 다수개 호텔의 미니바 통합 관리를 위한 부가통신사업방법과 사업모델 |
US7061393B2 (en) * | 2000-12-20 | 2006-06-13 | Inncom International Inc. | System and method for managing services and facilities in a multi-unit building |
US7053757B2 (en) * | 2000-12-20 | 2006-05-30 | Inncom International, Inc. | Intelligent door plate and chime |
US6701283B2 (en) | 2001-05-15 | 2004-03-02 | Dell Products L.P. | Apparatus for processing items of electronic equipment |
US6478152B1 (en) * | 2001-06-13 | 2002-11-12 | Harold D. Mansfield | Beverage package with sound effects |
DE10156157A1 (de) * | 2001-11-15 | 2003-05-28 | Bsh Bosch Siemens Hausgeraete | Verfahren und Vorrichtung zur Identifizierung eines Gegenstandes |
US7260438B2 (en) * | 2001-11-20 | 2007-08-21 | Touchsensor Technologies, Llc | Intelligent shelving system |
US7101811B2 (en) * | 2003-05-08 | 2006-09-05 | Intel Corporation | Method for forming a dielectric layer and related devices |
US20040260612A1 (en) * | 2003-06-20 | 2004-12-23 | Bar Comp Hi-Tech Ltd. | Mini bar system |
US20040260611A1 (en) * | 2003-06-20 | 2004-12-23 | Bar Comp Hi-Tech Ltd. | Mini bar system |
US20050093690A1 (en) * | 2003-09-11 | 2005-05-05 | Joseph Miglionico | Pressure-detection device and method |
US20050190072A1 (en) * | 2004-02-26 | 2005-09-01 | Brown Katherine A. | Item monitoring system and methods of using an item monitoring system |
US20060071774A1 (en) * | 2004-02-26 | 2006-04-06 | Brown Katherine A | Item monitoring system and methods using an item monitoring system |
US20060106499A1 (en) * | 2004-10-22 | 2006-05-18 | Roosli Philipp A | System and method for emergency shutdown of selected services and facilities in a multi-unit building |
US20060226988A1 (en) * | 2005-04-12 | 2006-10-12 | Nick Ernst | Hotel mini bar automation system |
US20070083288A1 (en) * | 2005-05-02 | 2007-04-12 | Oppie Design As | Minibar |
US20070016494A1 (en) * | 2005-06-27 | 2007-01-18 | 3M Innovative Properties Company | Methods of adjusting sales plans |
DE102005054333A1 (de) * | 2005-11-11 | 2007-05-16 | Dometic Gmbh | Einrichtung zur Aufbewahrung von Artikeln und System aus wenigstens zwei Einrichtungen |
EP2648878B1 (fr) * | 2010-12-08 | 2021-02-24 | Apex Industrial Technologies LLC | Système de distribution à accès direct |
DE102013214070A1 (de) * | 2013-07-17 | 2015-01-22 | Dometic Dienstleistungs-GmbH | Minibarwaage zum Wiegen einer Minibar |
US9959723B2 (en) * | 2015-09-09 | 2018-05-01 | Checkpoint Systems, Inc. | Product presence sensor security device |
US9984355B2 (en) * | 2016-02-25 | 2018-05-29 | Wal-Mart Stores, Inc. | Systems and methods for monitoring location of products on shelves at a retail sales facility |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4293852A (en) * | 1978-12-08 | 1981-10-06 | Lawrence Security Services Ltd. | Capacitive article removal alarm |
JPS59163696A (ja) * | 1983-03-09 | 1984-09-14 | 株式会社日本自動車部品総合研究所 | 電気配線システム |
SE456869B (sv) * | 1986-06-19 | 1988-11-07 | Electrolux Ab | Anordning foer avkaenning av antalet i ett fack efter varandra anordnade, likadana foeremaal |
IL82433A0 (en) * | 1987-05-06 | 1987-11-30 | Tadiran Ltd | Minibar with remote centralized billing |
DE4240623C2 (de) * | 1992-12-03 | 1996-03-28 | Hotelec Gmbh Elektronische Sys | Datenübertragungsanlage |
-
1995
- 1995-10-17 FR FR9512615A patent/FR2739956B1/fr not_active Expired - Fee Related
-
1996
- 1996-10-16 WO PCT/FR1996/001612 patent/WO1997014335A1/fr active IP Right Grant
- 1996-10-16 AT AT96934918T patent/ATE184762T1/de not_active IP Right Cessation
- 1996-10-16 DE DE69604421T patent/DE69604421T2/de not_active Expired - Fee Related
- 1996-10-16 EP EP96934918A patent/EP0868131B1/fr not_active Expired - Lifetime
-
1998
- 1998-10-16 US US09/051,398 patent/US6107928A/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9714335A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0868131B1 (fr) | 1999-09-22 |
ATE184762T1 (de) | 1999-10-15 |
DE69604421D1 (de) | 1999-10-28 |
FR2739956B1 (fr) | 1998-01-09 |
US6107928A (en) | 2000-08-22 |
FR2739956A1 (fr) | 1997-04-18 |
WO1997014335A1 (fr) | 1997-04-24 |
DE69604421T2 (de) | 2000-05-11 |
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