EP1775686A1 - Système de surveillance d'occupation - Google Patents

Système de surveillance d'occupation Download PDF

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Publication number
EP1775686A1
EP1775686A1 EP05447227A EP05447227A EP1775686A1 EP 1775686 A1 EP1775686 A1 EP 1775686A1 EP 05447227 A EP05447227 A EP 05447227A EP 05447227 A EP05447227 A EP 05447227A EP 1775686 A1 EP1775686 A1 EP 1775686A1
Authority
EP
European Patent Office
Prior art keywords
occupation
item
modules
junction
monitoring
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
Application number
EP05447227A
Other languages
German (de)
English (en)
Other versions
EP1775686B1 (fr
Inventor
Nick Vandenbulcke
Joost Bert
Frank Adins
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Quick Sensor NV
Original Assignee
Quick Sensor NV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Quick Sensor NV filed Critical Quick Sensor NV
Priority to EP09174708A priority Critical patent/EP2154658A1/fr
Priority to AT05447227T priority patent/ATE458234T1/de
Priority to DE602005019412T priority patent/DE602005019412D1/de
Priority to EP05447227A priority patent/EP1775686B1/fr
Publication of EP1775686A1 publication Critical patent/EP1775686A1/fr
Application granted granted Critical
Publication of EP1775686B1 publication Critical patent/EP1775686B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/22—Status alarms responsive to presence or absence of persons
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
    • G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
    • G08B5/221—Local indication of seats occupied in a facility, e.g. in a theatre

Definitions

  • the present invention relates to the field of systems for monitoring the occupation of seats and beds and the like.
  • Patent application EP 1491408 specifically relates to a seat occupation sensor.
  • WO 03/004318 WO 03/004318
  • a desirable feature for a monitoring system is that the information can be gathered in a quick and reliable way and at a relatively low cost.
  • patent EP278717-B1 a system and method are disclosed for polling terminal units provided at passenger seats in a passenger vehicle to obtain an indication of the state of each terminal unit.
  • a sensor is attached to each passenger seat.
  • the sensed information is transmitted as a polling answer signal through a transmission line to a head end apparatus like e.g. a monitor display.
  • Patent document FR-2826484-A1 relates to a passenger information device for a vehicle in a public transport means, where a detector hidden in the seat returns information on seat occupation.
  • Each seat is provided with a module for transforming the sensor signal into a signal adapted for processing by a calculation means.
  • the various seats are preferably connected with a bus type communication network that allows multiplexing.
  • the calculation means is among other things capable of detecting the absence of transmitted information from one or more modules.
  • Patent document JP5085491 discloses a system controlling in a concentrated way whether or not seat belts are fastened and how seats are occupied. It comprises a load detecting sensor applied to the bottom of the seat. It also provides a seat-occupied status display means being driven by a central control unit.
  • the present invention aims to provide a system for monitoring the occupation of items like seats, beds, ..., that overcomes the drawbacks of the prior art solutions.
  • the present invention relates to a system for monitoring the occupation of a group of items.
  • Each item of the group of items is provided with detection means and is arranged for transmitting information about the occupation of said item.
  • Each item is further provided with an item module arranged for controlling said detection means.
  • the item modules are in connection with a junction module arranged for controlling the item modules.
  • the junction module is controlled by a controller device.
  • the group of items is divided in a plurality of subgroups, each of said subgroups having its own junction module.
  • the item modules are advantageously connected to the junction module via a one-wire bus.
  • junction modules are connected to the controller device via an asynchronous serial bus.
  • data communication between the junction module and the controller device is performed according to a RS-485 protocol.
  • system further comprises a converter for converting data transferred from the junction modules to the controller device.
  • controller device is preferably a personal computer.
  • the items to be monitored are seats or beds.
  • the sensing means is typically a resistive or capacitive load detection sensor.
  • the item modules are provided with a memory device.
  • the junction module(s) may be provided with a memory device.
  • system for occupation monitoring further comprises a console for test and/or initialisation purposes.
  • system also comprises visualisation means.
  • Fig. 1 represents a block scheme of the occupation monitoring system according to the invention.
  • the present invention discloses a system for monitoring the occupation of a group of items, like seats, beds, ....
  • the example is used of monitoring the seat occupation in a movie theatre.
  • the monitoring system as described can directly be applied for monitoring seats in aircrafts, coaches, ..., for beds in hotels, hospitals and so on.
  • the block scheme of Fig.1 shows the main building blocks of the system.
  • Each seat (1) disposes of sensing means and a seat module (2).
  • the sensing means preferably a sensor
  • the sensing means is placed on an appropriate place that depends on the envisaged application.
  • the sensor is placed horizontally on the seat cushion.
  • a resistive or a capacitive load detection sensor can be used.
  • the sensor response is for example determined by the value of a resistance.
  • the seat is not occupied, it returns a value in a first predefined range.
  • the resistance changes to a value in a second predefined range distinct from said first range.
  • a sensor is out of order it returns e.g. an extremely high value, indicating its malfunction.
  • a connection with the sensor is provided on the seat module.
  • the sensor is capable of transmitting said resistance value.
  • the information from the sensor is read by the corresponding seat module.
  • the seat module controls the sensor and decides whether or not a seat is taken.
  • the various seat modules are connected with each other via a one-wire bus (10). This bus is used for both data transfer and power supply. It is well known in the state of the art.
  • the plurality of seats to be monitored is advantageously divided in a number of groups, e.g. of 20 units. Each group is connected to a junction module (3) being connected to the same one-wire bus connecting the seat modules belonging to that group.
  • the junction modules can read out the information from the corresponding set of seat modules.
  • the junction modules are capable of communicating with a controller device (5) controlling the monitoring process.
  • the controller device is typically a personal computer.
  • the individual junction modules are connected with each other and with the controller device by means of an asynchronous serial bus comprising four wires, two of which supply power while the other two are meant for data transfer. Data communication over this serial bus can for example be based on the RS-485 protocol.
  • a converter (4) can be provided for converting the asynchronous serial bus into a USB or RS232 port to ease the communication with the controller device (5).
  • the monitoring system according to the invention is capable to detect the state of hundreds of seats in a matter of seconds.
  • a further advantage is that the number of wires can be limited drastically. Between the seat modules only three wires are required and between the various junction modules four wires are sufficient.
  • the seat module (2) comprises a small micro-controller for interpreting the information from the corresponding sensor and for communication on the one-wire bus.
  • the micro-controller comprises flash memory for the software that interprets the sensor signal and stores the seat status, as well as some EEPROM for storing information (e.g. the seat identification). Further connection is provided for the one-wire bus and for a supply bus.
  • Each junction module is arranged for communication with the controller device over the asynchronous serial bus as well as for communication with the seat modules over the one-wire bus.
  • the junction module can be positioned anywhere on the one-wire bus.
  • the junction module continuously monitors the state of the seat modules connected to the same one-wire bus. On request of the controller device it transmits the status of the seat modules connected.
  • a table comprising a list of seats (seat modules) connected to the junction module and their status is kept. The necessary connectors are provided.
  • a junction module further comprises a micro-controller and memory means (e.g. of the flash-EPROM type) to render the module programmable.
  • the already mentioned RS-485 protocol is particularly suitable, as it uses differential signals (it compares the voltage difference over the two wires). Due to the reduced noise levels higher bit rates and much longer communication distances can be achieved and more robustness is provided. It further allows using a bus with several transmitters and receivers.
  • the logical protocol is designed to optimise the efficiency of the data transport and to reduce as much as possible the required micro-controller software.
  • the first three bytes of any data packet sent always have the same meaning : the first byte identifies the sender of the message (i.e. either the controller device or a junction module), the second byte contains the identification of the destination and the third byte comprises some control bits : an indication of the data packet size, indication of an 'acknowledge' message, ...
  • the last byte of the data packet is a cyclic redundancy check (CRC) sum.
  • CRC cyclic redundancy check
  • the communication between the junction modules and the controller device is in half duplex mode. Messages sent over the bus are to be acknowledged to the transmitter by sending either an acknowledge message or a reply comprising a new message. When the transmitter does not receive any message back from the destination address, an error has occurred. The original message then needs to be sent again.
  • the controller device typically a personal computer, is the master in the communication over the serial bus.
  • the junction modules only communicate in reply to a message previously sent by the controller. When, for example, the controller has sent a message asking information on the status of a certain seat or number of seats, the junction module replies by sending the desired status information.
  • the controller device keeps a table comprising the status of all items to be monitored. The table is continuously updated while new status information of a seat is received.
  • Each junction module on the asynchronous serial bus must clearly have a unique address in order to be addressable by the controller device.
  • the controller device can send an 'acknowledge' after having received a message from a junction module.
  • the controller may also send a standard message to provoke a reply from a junction module.
  • a typical message from the controller to a given junction module can look like this (byte-per-byte): source - dest . - 33 ⁇ h - comm ⁇ 1 - comm ⁇ 2 - CRC whereby the first three bytes and the last one have a meaning as already explained before and comm1 and comm2 comprise a message requesting the status of the seat modules.
  • each junction module constantly interrogates its slaves (i.e. the seat modules).
  • a seat module typically returns the following information :
  • a learning procedure must be carried out in order to assign a unique sequence number to each item of the group of items to be monitored. This is performed for each junction module in turn in the following way.
  • the junction module sends a signal to the seat modules connected with it to indicate the learning mode is entered. All seat modules set their sequence number to 0. Then numbers are assigned from 1 to N by consecutively occupying each seat to be numbered. By occupying the seat the next number to be attributed goes to that seat.
  • the monitoring system may advantageously also employ an (optional) console.
  • the console can be considered as an extension of the junction modules without any intelligence of its own. It only allows a more practical way of operating the junction modules and of getting feedback from the junction modules. It can e.g. display which number is assigned during the learning procedure.
  • the console takes over some of the functionalities provided by the junction modules.
  • the initialisation procedure can also be performed by using a personal computer device.
  • the console may also be useful for test purposes. In such a test one can for example request the sequence number of a certain item to be monitored. The junction module connected to the same one-wire bus is then switched into a test mode. The console then takes over some of the functionality of the console. In other words, a check on the item sequence numbers can already be performed during the installation of the system, when the controller device still has to be installed.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Small-Scale Networks (AREA)
  • Selective Calling Equipment (AREA)
  • Alarm Systems (AREA)
EP05447227A 2005-10-11 2005-10-11 Système de surveillance d'occupation Not-in-force EP1775686B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP09174708A EP2154658A1 (fr) 2005-10-11 2005-10-11 Système de surveillance d'occupation
AT05447227T ATE458234T1 (de) 2005-10-11 2005-10-11 Belegungsüberwachungssystem
DE602005019412T DE602005019412D1 (de) 2005-10-11 2005-10-11 Belegungsüberwachungssystem
EP05447227A EP1775686B1 (fr) 2005-10-11 2005-10-11 Système de surveillance d'occupation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05447227A EP1775686B1 (fr) 2005-10-11 2005-10-11 Système de surveillance d'occupation

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP09174708.9 Division-Into 2009-10-30

Publications (2)

Publication Number Publication Date
EP1775686A1 true EP1775686A1 (fr) 2007-04-18
EP1775686B1 EP1775686B1 (fr) 2010-02-17

Family

ID=35982470

Family Applications (2)

Application Number Title Priority Date Filing Date
EP09174708A Withdrawn EP2154658A1 (fr) 2005-10-11 2005-10-11 Système de surveillance d'occupation
EP05447227A Not-in-force EP1775686B1 (fr) 2005-10-11 2005-10-11 Système de surveillance d'occupation

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP09174708A Withdrawn EP2154658A1 (fr) 2005-10-11 2005-10-11 Système de surveillance d'occupation

Country Status (3)

Country Link
EP (2) EP2154658A1 (fr)
AT (1) ATE458234T1 (fr)
DE (1) DE602005019412D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008008950A1 (de) * 2008-02-13 2009-08-27 Imc Messsysteme Gmbh Messwerteübertragungseinrichtung
EP2268025A1 (fr) 2009-06-22 2010-12-29 Quick Sensor NV Procédé pour système de cinéma numérique interactif

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105607627B (zh) * 2016-03-17 2019-02-15 盐城工学院 一种影院4d设备监测装置及系统
CN108010262B (zh) * 2017-11-15 2019-07-26 深圳中兴网信科技有限公司 占位警报系统、方法、计算机设备和可读存储介质

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2682787A1 (fr) * 1991-10-18 1993-04-23 Oury Jean Marc Procede de determination de l'audience de spectacles, tels que des óoeuvres cinematographiques et systeme pour la mise en óoeuvre d'un tel procede.
EP0903707A2 (fr) * 1997-09-17 1999-03-24 Matsushita Electric Industrial Co., Ltd. Système de détection d'état alité
US6049281A (en) * 1998-09-29 2000-04-11 Osterweil; Josef Method and apparatus for monitoring movements of an individual
JP2005208720A (ja) * 2004-01-20 2005-08-04 Inax Corp 存在確認システム

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4896209A (en) 1987-02-10 1990-01-23 Sony Corporation Passenger vehicle polling system having a central unit for polling passenger seat terminal units
JPH0585491A (ja) 1991-02-20 1993-04-06 Japan Airlines Co Ltd 座席の着座監視システム
FR2826484A1 (fr) 2001-06-26 2002-12-27 Laurent Beignier Dispositif pour un moyen de transport en commun, tel que notamment un avion, permettant de centraliser des informations relatives aux places occupees/disponibles dans ledit moyen de transport
DE10223218B4 (de) 2001-07-02 2010-04-08 Continental Automotive Gmbh Einrichtung und Verfahren zur Sitzbelegungserkennung in einem Kraftfahrzeug
EP1491408A1 (fr) 2003-06-23 2004-12-29 IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A. Détecteur d'occupation de siège

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2682787A1 (fr) * 1991-10-18 1993-04-23 Oury Jean Marc Procede de determination de l'audience de spectacles, tels que des óoeuvres cinematographiques et systeme pour la mise en óoeuvre d'un tel procede.
EP0903707A2 (fr) * 1997-09-17 1999-03-24 Matsushita Electric Industrial Co., Ltd. Système de détection d'état alité
US6049281A (en) * 1998-09-29 2000-04-11 Osterweil; Josef Method and apparatus for monitoring movements of an individual
JP2005208720A (ja) * 2004-01-20 2005-08-04 Inax Corp 存在確認システム

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008008950A1 (de) * 2008-02-13 2009-08-27 Imc Messsysteme Gmbh Messwerteübertragungseinrichtung
DE102008008950B4 (de) * 2008-02-13 2010-11-04 Imc Messsysteme Gmbh Messwerteübertragungseinrichtung
EP2268025A1 (fr) 2009-06-22 2010-12-29 Quick Sensor NV Procédé pour système de cinéma numérique interactif
US9749590B2 (en) 2009-06-22 2017-08-29 Cinvolve Bvba Method for interactive digital cinema system

Also Published As

Publication number Publication date
EP2154658A1 (fr) 2010-02-17
EP1775686B1 (fr) 2010-02-17
DE602005019412D1 (de) 2010-04-01
ATE458234T1 (de) 2010-03-15

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