EP1775686B1 - Occupation monitoring system - Google Patents
Occupation monitoring system Download PDFInfo
- Publication number
- EP1775686B1 EP1775686B1 EP05447227A EP05447227A EP1775686B1 EP 1775686 B1 EP1775686 B1 EP 1775686B1 EP 05447227 A EP05447227 A EP 05447227A EP 05447227 A EP05447227 A EP 05447227A EP 1775686 B1 EP1775686 B1 EP 1775686B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- seat
- occupation
- monitoring
- junction
- modules
- 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.)
- Not-in-force
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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 movie theatre seats.
- 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.
- Patent document EP-A-0903707 discloses a system comprising all the features of the preamble of claim 1 with the exception that hospital beds instead of movie theatre seats are monitored.
- Patent document FR-A-2682787 discloses a system according to the preamble of claim 1.
- the present invention aims to provide a system for monitoring the occupation of movie theatre seats, that overcomes the drawbacks of the prior art solutions.
- the present invention relates to a system for monitoring the occupation of a group of movie theatre seats according to claim 1. Preferred embodiments are claimed in the dependent claims.
- 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 seats in a movie theatre.
- 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.
- a wireless implementation may be possible in order to avoid electromagnetic interference caused by cables.
- 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.- 33h - comm1 - comm2 - 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 seat of the group of seats 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 seat sequence numbers can already be performed during the installation of the system, when the controller device still has to be installed.
Abstract
Description
- The present invention relates to the field of systems for monitoring the occupation of movie theatre seats.
- Systems for monitoring the occupation of seats are well known for applications in cars. Such systems are mostly provided with a set of sensors and a control unit (see e.g.
WO 03/004318 EP 1491408 specifically relates to a seat occupation sensor. However, it is clear that in such applications there is a very limited number of seats to be monitored. - In various applications commercially interesting information can be obtained from an occupation monitoring system. Also from the point of view of security the information provided by such a system can be useful. 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.
- In patent
EP278717-B1 - Patent document
FR-2826484-A1 - Patent document
JP5085491
Patent documentEP-A-0903707 discloses a system comprising all the features of the preamble ofclaim 1 with the exception that hospital beds instead of movie theatre seats are monitored. Patent documentFR-A-2682787 claim 1. - The present invention aims to provide a system for monitoring the occupation of movie theatre seats, that overcomes the drawbacks of the prior art solutions.
- The present invention relates to a system for monitoring the occupation of a group of movie theatre seats according to
claim 1. Preferred embodiments are claimed in the dependent claims. -
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 seats in a movie theatre.
- 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, is placed on an appropriate place that depends on the envisaged application. Preferably the sensor is placed horizontally on the seat cushion. Depending on the seat type and specific application, a resistive or a capacitive load detection sensor can be used. The sensor response is for example determined by the value of a resistance. When the seat is not occupied, it returns a value in a first predefined range. When the seat is taken, the resistance changes to a value in a second predefined range distinct from said first range. When 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. - A wireless implementation may be possible in order to avoid electromagnetic interference caused by cables.
- 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. Optionally 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).
- Moving a part of the system's complexity from the level of the seat modules to that of the junction modules allows speeding up significantly the monitoring process. This feature makes the system also very suitable for monitoring a large number of seats. The monitoring system according to the invention is capable to detect the state of hundreds of seats in a matter of seconds. In the case of a wired implementation of the system 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 various parts of the system are discussed more in detail in the subsequent paragraphs.
- 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.
- For data communication over the asynchronous serial bus 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.
- As there is only one bus, 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.
- An example of a message from controller device to junction module is given. 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. In the latter case a typical message from the controller to a given junction module can look like this (byte-per-byte):
source - dest.- 33h - comm1 - comm2 - 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. - A further explanation on the operation of the movie theatre seats occupation monitoring system is now provided. Suppose the seats in the theatre are divided in subgroups on a row-per-row basis and the seat modules of all seats of a same row are connected to one junction module. This junction module is the master for the communication over the one-wire bus connecting all seat modules of the row in question.
- In normal operation each junction module constantly interrogates its slaves (i.e. the seat modules). A seat module typically returns the following information :
- whether or not a seat (with a given number) is present or not,
- if the seat is present, whether it is occupied or not,
- whether an error is detected at the sensor (open circuit or short circuit)
- At the installation of the system (or at start-up) a learning procedure must be carried out in order to assign a unique sequence number to each seat of the group of seats 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.
- During the set-up procedure as described 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. Alternatively 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 seat sequence numbers can already be performed during the installation of the system, when the controller device still has to be installed.
Claims (10)
- System for monitoring the occupation of a group of movie theatre seats, each movie theatre seat of said group of movie theatre seats being provided with detection means and arranged for transmitting information about the occupation of said movie theatre seat, said group of movie theatre seats divided in a plurality of subgroups, each of said subgroups having its own junction module being controlled by a controller device, characterized in that each movie theatre seat is provided with a seat module arranged for controlling said detection means and for deciding whether or not a seat is taken and in that said seat modules are in connection with said junction module, wherein the junction module is arranged for monitoring the status of the seat modules and for transmitting said status to the controller device.
- System for occupation monitoring as in claim 1, wherein said seat modules are connected to said junction module via a one-wire bus.
- System for occupation monitoring as in claim 1 or 2, wherein said junction modules are connected to said controller device via an asynchronous serial bus.
- System for occupation monitoring as in any of the previous claims, wherein data communication between said junction module and said controller device is performed according to a RS-485 protocol.
- System for occupation monitoring as in any of the previous claims, further comprising a converter for converting data transferred from said junction modules to said controller device.
- System for occupation monitoring as in any of the previous claims, wherein said controller device is a personal computer.
- System for occupation monitoring as in any of the previous claims, wherein said sensing means is a resistive or capacitive load detection sensor.
- System for occupation monitoring as ih any of the previous claims, wherein said seat module and/or said junction module is provided with a memory device.
- System for occupation monitoring as in any of the previous claims, further comprising a console for test and/or initialisation purposes.
- System for occupation monitoring as in any of the previous claims, further comprising visualisation means.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09174708A EP2154658A1 (en) | 2005-10-11 | 2005-10-11 | Occupation monitoring system |
AT05447227T ATE458234T1 (en) | 2005-10-11 | 2005-10-11 | OCCUPANCY MONITORING SYSTEM |
EP05447227A EP1775686B1 (en) | 2005-10-11 | 2005-10-11 | Occupation monitoring system |
DE602005019412T DE602005019412D1 (en) | 2005-10-11 | 2005-10-11 | Occupancy monitoring system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05447227A EP1775686B1 (en) | 2005-10-11 | 2005-10-11 | Occupation monitoring system |
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 EP1775686A1 (en) | 2007-04-18 |
EP1775686B1 true EP1775686B1 (en) | 2010-02-17 |
Family
ID=35982470
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09174708A Withdrawn EP2154658A1 (en) | 2005-10-11 | 2005-10-11 | Occupation monitoring system |
EP05447227A Not-in-force EP1775686B1 (en) | 2005-10-11 | 2005-10-11 | Occupation monitoring system |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09174708A Withdrawn EP2154658A1 (en) | 2005-10-11 | 2005-10-11 | Occupation monitoring system |
Country Status (3)
Country | Link |
---|---|
EP (2) | EP2154658A1 (en) |
AT (1) | ATE458234T1 (en) |
DE (1) | DE602005019412D1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008008950B4 (en) * | 2008-02-13 | 2010-11-04 | Imc Messsysteme Gmbh | Readings transmission device |
PL2268025T3 (en) | 2009-06-22 | 2015-10-30 | Cinvolve Bvba | Method for interactive digital cinema system |
CN105607627B (en) * | 2016-03-17 | 2019-02-15 | 盐城工学院 | A kind of movie theatre 4D equipment monitoring apparatus and system |
CN108010262B (en) * | 2017-11-15 | 2019-07-26 | 深圳中兴网信科技有限公司 | Occupy-place warning system, method, computer equipment and readable storage medium storing program for executing |
Family Cites Families (9)
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 (en) | 1991-02-20 | 1993-04-06 | Japan Airlines Co Ltd | Seat occupation monitoring system |
FR2682787B1 (en) | 1991-10-18 | 1995-03-03 | Oury Jean Marc | METHOD FOR DETERMINING THE HEARING OF SHOWS, SUCH AS CINEMATOGRAPHIC WORKS AND A SYSTEM FOR CARRYING OUT SUCH A METHOD. |
DE903707T1 (en) | 1997-09-17 | 1999-12-09 | Matsushita Electric Ind Co Ltd | Bed occupancy detection system |
US6049281A (en) * | 1998-09-29 | 2000-04-11 | Osterweil; Josef | Method and apparatus for monitoring movements of an individual |
FR2826484A1 (en) | 2001-06-26 | 2002-12-27 | Laurent Beignier | Passenger information device for vehicle such as airplane where detector in seat returns information on seat occupation |
DE10223218B4 (en) | 2001-07-02 | 2010-04-08 | Continental Automotive Gmbh | Device and method for seat occupancy detection in a motor vehicle |
EP1491408A1 (en) | 2003-06-23 | 2004-12-29 | IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A. | Seat occupant sensor |
JP2005208720A (en) * | 2004-01-20 | 2005-08-04 | Inax Corp | Presence confirming system |
-
2005
- 2005-10-11 EP EP09174708A patent/EP2154658A1/en not_active Withdrawn
- 2005-10-11 AT AT05447227T patent/ATE458234T1/en not_active IP Right Cessation
- 2005-10-11 EP EP05447227A patent/EP1775686B1/en not_active Not-in-force
- 2005-10-11 DE DE602005019412T patent/DE602005019412D1/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP1775686A1 (en) | 2007-04-18 |
ATE458234T1 (en) | 2010-03-15 |
EP2154658A1 (en) | 2010-02-17 |
DE602005019412D1 (en) | 2010-04-01 |
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