专利摘要:
SUMMARY The invention relates to a device for locating and identifying objects in a room which can be delimited by an outer reference frame (40) and possibly an inner reference frame (40: 1) and accessing contextual service for a perpendicular object within the reference frame, comprising; one or more short hall radio frequency type identification elements (10) associated with the object to be identified and located, a plurality of short hall radio frequency type first transmitters / receivers and those placed in the room to be monitored allow a space in the form of an exterior (40) or internal reference frame (40: 1) to be formed, the location of the usual first transmitter / receiver being known to the reference frame, and further comprising calculating means (13) for locating an identification element and compiling food data based on measured time difference (TD) for radio waves from a the identification element to reach the respective first transmitter receiver in response to a call, one or more second transmitter receivers (30) operating at short-range radio frequency and which are placed in the room to be monitored allows an external reference frame (40) to be formed, further comprising calculating means (33) for calculation of the position of the identification element based on matd ata which is harnessed from the first sander / receiver (20). (Hg. 1)
公开号:SE1450177A1
申请号:SE1450177
申请日:2014-02-15
公开日:2015-08-16
发明作者:Niclas Sköld;Henrik Lindström
申请人:Nordic Light Ab;
IPC主号:
专利说明:

The present invention relates to a device for locating and identifying objects in a room which can be delimited by an outer frame of reference and possibly one or more in the outer frame. the reference frame coated inner reference frames as well as allowing access to a contextual service if an approved object is located within any of the said reference frames in the room. In an embodiment of the invention, the object may comprise a luminaire.
The ability to determine the geographical position of mobile objects in wireless networks has made it possible to offer an object a team-based or team-aware service depending on the service area in which a radio-equipped object is located.
Equipped with an identification element, which works with a short-range radio frequency such as an RFID tag or ID transponder, an object forms a so-called "node" that can be 'rajas' in a short-hall radio-based system. One or more transmitters / receivers that operate with short-range radio frequency and are placed in an appropriate manner can form a base station (BS) for a spontaneously wired personal data network. With the help of transmitters / receivers that act as identifiers (locators), identification elements that are located in the network within a service area can be identified and geographically located. By short-hall working radio system is meant in the following so-called Wireless Personal Area Network (WPAN) according to IEEE 802.11 or similar standard. By service area is meant a landscape or an area defined in advance, ie. in practice a cell area or precise geographical zones that can be delimited between a plurality of cooperating transmitters / receivers which are capable of transmitting (long) radio communication between them. In order to allow external communication of the personal network, at least one of the transmitters / receivers that enter a system is connected to a fixed network via, for example, Ethernet.
For geographical position estimation an identification element, methods can be used which measure the occurring time difference (TD) between an identification element associated with an object answering a call from a transmitter / receiver. The position of the identification element within a defined cell area can then be determined with relatively high accuracy.
Position estimation for an identification element is usually based on radio ratios between a plurality of cooperating transmitters / receivers, the exact position of the transmitters / receivers being known. Triangulation or similar time difference methods usually use signals hammering from an identification element, which are momentarily picked up by a plurality of transmitters / receivers. With triangulation, a geographical position can be determined by feeding the distance to an identification element with at least three points with a known position. In trilateration, the relative or absolute difference Pans prior ml PRV 2 is measured in the time it takes for a signal from an identification element, in response to a call, to propagate from the identification element and finally reach each transmitter / receiver.
In an embodiment, the present invention is intended to be used in combination with light fixtures, each such forming the object to which an identification element is intended to be associated. Namely, the service areas can be defined by defined external and internal reference frames for luminaires, ie. spaces, areas or corridors in a building whose light is intended to be regulated, to be turned on and off in a context, ie. in a predetermined manner that depends on different circumstances, situations or contexts that may be trade-driven. A particularly interesting area of application for remote-controlled luminaires is the type of radio-controlled luminaires that are incorporated into remote-controlled lighting systems and are intended for contextual use. Each such luminaire contains electronics that allow it to be remotely controlled in a number of different ways, for example what grid emits the color of the light, brightness, etc. It is also common for luminaires of this type to be controlled against a context which may include a clock or a light feeder. steamed during the day when the need for light is less and allowed to shine more intensively on the surface. A large area of application for such controllable and controllable lighting systems is in retail premises.
A retail space can have a context that includes a number of hierarchically arranged light groups which may, for example, comprise main groups and subgroups. A first service area can consist of an external frame of reference defined as the total surface area of a store on a level floor, for example an entrance floor. Any Other habit plans can form second, third, etc. service areas. The first service area can be delimited by the store's outer zone, for example the premises' cradles. The outer reference frame or the first service area can be divided into a number of underlying inner reference frames, i.e., in principle light zones which form sub-areas within the first service area. These underlying service areas may in a shop premises comprise a men's department, a women's department, a make-up department, shop window sections, etc., as well as one or more corridors which connect said departments. In the following, such areas in a service area are called first, second, third, etc. light zones.
In some cases, it is also a question of the possibility of controlling and controlling emitted light between different floor plans in a building. In each of these light zones it is desirable that the light is different within lighting zones, whereby the said lighting zones can in turn be divided into so-called light groups and in some cases in even smaller sub- or sub-groups. Regarding lighting systems, the focus in most cases is on achieving a control system that makes it possible to dynamically control and regulate the light levels depending on the onskernal and needs. By introducing different sections in a room, for example a store, the light levels can be regulated for each section or section as needed.
Pans prior ml PRV 3 Knowing devices for locating and identifying objects in the after room and allowing access to a contextual service for an approved object located in the room often creates problems during installation. The problems are common in most known systems regardless of the type of object an identification element is associated with, but become particularly apparent when installing remote-controlled lighting systems.
One of the more common problems that can arise if two adjacent stores go through installation at the same time. When activating a luminaire, the problem arises that a luminaire that does not have a defined subnatant cannot be added to a lighting system without uncertainty arising. More specifically, the question arises as to whether the light fixture in question belongs to the store in question or the adjacent store.
This problem has so far been solved by assigning a nightmare address to each incoming light fixture, ie. an IP address eg. CIDR, whereby the luminaire is defined to belong to a specific installation with a specific machine connection to the current network. Although this technology has proven to be functional, it suffers from the disadvantage that it is too complicated and difficult to use, both for manufacturers of light fixtures and for end users, customers and store owners.
Another problem arises when servicing or replacing individual light fixtures in a light group because complete control and programming of night mask address (IP address) as Complies with the replaced luminaire is required at the producer level before the product can be sent to the customer for installation in store.
Another problem with kanda systems is the procedure of installing and maintaining correct positions for each light source in the control system during its operational life. In addition, lighting fixtures can be moved between different spaces in a room to temporarily increase the brightness of specific objects in a room due to remodeling or changes in layout. Such changes require regular updating of positions in the control system for correct control of the lights (luminaires). One problem is that this type of change usually requires an update of the position of the light fixtures in the control system, which meant a relatively extensive work. An answering circumstance is also that it is not always the same staff who maintain the system who also physically move the bright spots in the room. Of course, it is even more difficult to keep the system up to date.
The risk of incorrect information together with complicated installation has meant that radio-based lighting systems that allow access to contextual services have not yet penetrated the market.
An object of the present invention is to provide a device for locating and identifying objects in a room which can be delimited by an outer reference frame and possibly one or more internal reference frames covered in the outer reference frame and allows access to a contextual service for a good edge. objects located within any of Pans prior in! PRV 4 named reference frames in the room. This object of the invention is read by a device which has the features and pitches indicated in claim 1. A second object of the invention is to provide a positioning system for remotely controlled luminaires. This is achieved by a device which has the features and pitches indicated in claim 11.
The invention will be described in more detail below with reference to the accompanying drawings, in which; Fig. 1 schematically shows the architecture of a device for locating and identifying an object in the form of a light fixture and allowing access to a contextual service using the position and identity of the light fixture according to the present invention; Fig. 2 schematically shows a first service area on a floor plan in a building divided into a number of geometrically delimited cell areas, each comprising a light group of remote-controlled light luminaires. Fig. 3 shows a block diagram for an identification element or node that operates with short-range radio frequency and is intended to be associated with an object in a device according to the invention, Fig. 4 shows a block diagram for a first transmitter / receiver or identifier which operates with short-range radio frequency and is not intended for a device according to the invention, Fig. shows a block diagram for a second transmitter / receiver or base station operating with short-range radio frequency and intended for none in a device according to the invention, and Fig. 6 shows lists of IDs for identification elements associated with objects which in this case consist of light fixtures as input to a network, have been approved for a specific service area and thereby given father access to contextual services e according to the invention.
Fig. 1 schematically shows the architecture of a device for locating and identifying objects in a room which can be delimited by an outer reference frame and possibly one or more internal reference frames covered in the outer reference frame and allows access to a contextual service for a good edge. objects located within the flag of said reference frames in the room.
The device essentially comprises one or a plurality of identification elements 10 (nodes) which operate with short-range radio frequency and are intended to be associated with an object, in this case a luminaire, which is to be identified and located in the room. Furthermore, the device comprises a plurality of first transmitters / receivers 20 (identifiers or locators) which operate with short-range radio frequency and which are intended to be placed in the room to be monitored and allow a space in the form of an outer or inner reference frame (40; 40: 1) to be formed. The geographical position of each first transmitter / receiver is known to the internal reference frame 40: 1 which the first transmitter / receiver defines. Each first transmitter / receiver 20 includes Pan's prior ml PRV calculator 23 for locating an identification element 10 and compiling food data based on measured time difference (TD) for radio waves from the identification element to reach the respective first transmitter / receiver in response to a call. The device further comprises one or a plurality of other transmitters / receivers 30 (base stations) which operate with short-range radio frequency and located in the room to be monitored allows an external reference frame 40 to be formed whereby the number and location of the other transmitters / receivers may be known to the external the reference frame 40. The second transmitter / receiver 30 further comprises calculating means 33 for calculating the position of the identification element 10 based on food data retrieved from the first transmitter / receiver 20, the call to identification element 10 being made from said second transmitter / receiver 30 via the first transmitter / receiver .
Food data that the calculating means 23 in the first transmitter / receiver 20 prepares consists of vector data in the space 40: 1 may include the mathematical quantities time and signal strength or magnitude and direction flan it to the first transmitter / receiver of the identification element.
Vector data compiled by the calculation means 23 in the first transmitter / receiver 20 are time-based in which the magnitude and direction of the mathematical quantities also include time vector data. The calculating means 33 of the second transmitter / receiver 30 calculates the position of the identification element 10 in the space starting from the time-based vector data obtained from the fifth transmitter / receiver 20.
The second transmitter / receiver comprises means emanating from the fixed position of the identification element 10 in the space, firstly being able to determine if the identifying element is within the outer reference frame 40 and secondly, dispensing if the identifying element is within any possible inner reference frame 40: 1. The second transmitter / receiver 30 comprises means 33, 34 which, depending on a fixed position in the room, can approve or reject the located identification element 10 and, upon approval, assign the identification element a pre-determined nocturnal address. Depending on the network access address specified by the identification element 10, an associated predetermined contextual service is transferred from the second transmitter / receiver 30 to a well-defined identification element 10. Said data is stored in the memory part 13 of the identification element.
The device comprises calculating means 11, 13; 21, 23; 31, 33 for locating an identification element 10 and establishing food data based on trilateration, whereby the relative or absolute difference in the time it takes for a signal from the identification element, in response to a call, to propagate from the identification element to the series of first transmitter / receiver 20. When compiling food data, communication takes place between the second transmitter / receiver 30 and identification element 10 by looping via the series of first transmitter / receiver 20.
Pans prior ini PRV 6 The second transmitter / receiver 30 comprises means 32 for data communication with an external nal via eg Ethernet.
In the following, an embodiment of the device is described in combination with light fixtures, in which case access to a contextual service is obtained utilizing the position and identity of the light fixture. A geographic area in a room or room can be divided into a number of geometrically delimited cell areas 40; 40: 1, each of which may comprise a light group of remote controlled light fixtures. The radio system that is intended to be used is short-lived and of the type that offers unlicensed frequency bands and wireless personal data network "Wireless Personal Area Network" (WPAN).
Such systems have the advantage that they with low energy consumption allow the transfer of simpler messages and data between different digitally active identification elements 10. The system is described on the basis of the use of so-called Ad-hoc protocol and after spontaneous wireless network whereby the identification elements 10 do not need in advance karma to the topology of the network around them, Identification elements 10 listen for messages sent from a transmitter / receiver 20; 30 announcing its presence.
Each identification element 10, has a unique identity, an ID number in the form of a suitable electronic network address, for example 0.0.12.117.65.32. According to the present invention, each light fixture is equipped with an identification element 10, for example in the form of an ID transponder with a predetermined identity. The identification element 10 is provided with a power supply unit 14 which receives power from the electrical network, for example at 230 volts which the light fixture is also connected to or alternatively arranged for battery operation. This power and data experience takes place via an interface in the form of a communication module 12 between the identification element 10 and the light fixture's own control and drive electronics.
Due to the fact that an identification element 10 is associated with a luminaire, it has a unique ID number. The luminaire is frozen with this ID number already at the factory. Thanks to the ID number, luminaires can be selectively installed and taken boil frail specific light groups in which service area or structurally underlying area as a lift in a lighting system.
Referring to Fig. 1, the hazardous device consists essentially of three types of units.
One or more identification elements 10 with a predetermined identity and usable marking of a specific light fixture intended for remote control. Each identification element 10 has the task of controlling and reporting from the connected light fixture according to a predetermined context.
- A number of first sanders / receivers 20, identifiers (locators), ie. mobile units equipped with calculating means 23 for locating an identification element by means of trilateration and means 21 for dynamic short-distance radio communication.
Pans prior ml PRV 7 One or more other transmitters / receivers 30, base stations whose task is to handle the control of a lighting system, and which transmitters / receivers are equipped with means 31 for dynamic short-distance radio communication, computing means 33 for geographically locating an identification element 10 with assistance of data obtained from a first transmitter / receiver 20, a database 34 for storing selected light groups with specific context within a service area, means 32 for static data transmission to a fixed data network.
Referring to Fig. 3, habit identification element 10 has the task of controlling and reporting from an associated light fixture in accordance with a context of given and transmitted instructions from the second transmitter / receiver 30 database 34. The communication module included in the identification element 10 has an interface for data communication and power transmission food light fixtures electronics. Essentially, an identification element 10 comprises the following parts: A radio module 11 for short hall radio communication - A communication module 12 which forms an interface for power and data transfer to the electronics of the luminaire. A CPU with memory part and protocol stack 13 A power supply unit 14 intended to be connected to the general voltage, e.g. V. ldentifieringselements 10 radiomodul 11 is normally kept in a listening position hibernation, which means that the radio transmitter is inactive and the unit listens for incoming activation signal from a transmitter / receiver 20; 30. Upon radio contact, identification element 10 activates radio module 11 and it responds with its Identification (ID) after which it 'Atter * to sleep.
Fig. 4 shows in more detail the architecture of the first transmitter / receiver 20 embodied in the present invention. The first transmitter / receiver is a unit used to locate an identification element 10 by means of trilateration. The first transmitter / receiver 20 may be used to forward (Mica) communication between the second transmitter / receiver 30 and an identification element 10. Each first transmitter / receiver 20 has substantially free parts.
A radio module 21 receives short-range radio communication. A CPU unit with memory part 23 A power-free supply unit 24 intended to be connected to a public night, for example with the night voltage 230 V or battery operation.
Fig. 5 shows the second transmitter / receiver 30 which has the task of handling control and control of a lighting system. In more detail, the second transmitter / receiver mainly comprises the following parts: - a radio module 31 for short hall radio communication Pans prior inl PRV 8 a communication module 32 Mr communication with a fixed data network via Ethernet - A CPU unit with memory part 33 a database with registers for lighting systems 34 - a current supply unit 35 intended to be connected to a general night, for example with the night voltage 230 V Each other transmitter / receiver 30 is arranged so that no one in a radionate and in the database establishes and stores lists 50 with identification elements 10 and ID for light fixtures which belong to different light groups 40: 1-40: 4 for a service area, see Fig. 2. The second transmitter / receiver 30 can search for identification elements 10 by sending out messages urging identification elements that are not associated with a network to respond with their ID. The second transmitter / receiver 30 can send by radio message directly to an identification element 10 or via the first transmitter / receiver to said identification element 10. In response, the second transmitter / receiver 30 receives ID for a contacted identification element 10. The second transmitter / receiver 30 requests a distance vector from the first transmitter / receiver 20 to the current identification element. The first transmitter / receiver 20 responds to the second transmitter / receiver 30 and leaves information about the time vector for the current identification element 10. On the basis of this information, the second transmitter / receiver 30 calculates the position of the current identification element 10 within the geographical area and thus also determines the node is within a defined service area 40; 40: 1. If so, and the identifier 10 is passed, the identifier is assigned a night access address. Then, the second transmitter / receiver 30 loads information from its database 34 in the form of context for the current lighting group in which the identification element 10 and thus the luminaire is located.
The second transmitter / receiver 30 forwards a result of a search in the form of a verification list back to the database 34. The verification may contain information about the network address of a located identification element 10, for example 0.0.14.119.65.32 and geographical coordinates regarding the location of the location.
Each other sand receiver receiver 30 is assigned, and enters an outer frame of reference 40 with predetermined positions of geographic coordinates from a recessed edge coordinate system.
This coordinate system is conveniently obtained from a computer-based CAD drawing of the room whose light fixtures are to be remotely controlled.
One of the great advantages of the system is that it knows at an instant moment where each light point (light fixture) is located within a defined room space, floor plan, etc. in a building. Even if light fixtures have been moved. This makes it possible to locate and control as many individual light fixtures as light groups in the desired way.
Pans prior in! PRV 9 The invention is not limited to what is described above and that shown in the drawings, but can be changed and modified in a number of different ways within the scope of the inventive concept stated in the appended claims.
Pans prior to PRV
权利要求:
Claims (13)
[1]
1. one or more identification elements (10) which operate with short-range radio frequency and which are intended to be associated with the object to be identified and located, - a plurality of first transmitters / receivers (20) which operate with short-range radio frequency and which are placed in the room to be monitored. allows a space in the form of an outer (40) or inner reference frame (40: 1) to be formed, the location of each first transmitter / receiver being adjacent to the reference frame, and further comprising calculating means (13) locating an identification element and establishing nnat data. based on measured time difference (TD) radio waves from an identification element reach the respective first transmitter / receiver in response to a call, 2. one or more other transmitters / receivers (30) WHICH operate with short-range radio frequency and which are placed in the room to be monitored allowing an outer reference frame (40) to be formed, further comprising calculating means (33) for calculating the position of the identification element based on food data retrieved from the first transmitter / receiver (20).
[2]
Device according to claim 1, wherein the food data that the calculating means (23) in the first transmitter / receiver (20) prepares consists of vector data in the room (40: 1) including the mathematical quantities time and signal strength or magnitude and direction from the first to the first. the transmitter / receiver (20) to the identification element (10).
[3]
The apparatus of claim 2, wherein the vector data that the calculating means (23) in the first transmitter / receiver (20) obtains is time-based in which the mathematical quantities magnitude and direction include time vector data.
[4]
Device according to claim 3, wherein the calculating means (33) of the second transmitter / receiver (30) calculates the position of identification elements in the space (40; 40: 1) based on the time-based vector data obtained from the first transmitter / receiver (20). Pans prior inl PRV 11
[5]
Device according to claim 4, wherein the second transmitter / receiver (30) comprises means (33, 34) which, starting from the determined position of the identification element in the space, can first determine whether the identification element (10) is within the outer reference frame (40). and secondly, determining whether the identification element is within any internal frame of reference (40: 1).
[6]
The device according to claim 5, wherein the second transmitter / receiver (30) comprises means (33, 34) which, depending on a fixed position in the room, can approve or reject a located identification element (10) and upon approval assign the identification element a pre-determined night access address.
[7]
Device according to claim 6, wherein, on the basis of the identifying element's given night access address, a contextual service (34) associated with the second transmitter / receiver (30) is transferred to a preconditioned identification element.
[8]
An apparatus according to any one of claims 1 to 7, comprising calculating means (23, 33) for locating an identification element (10) and compiling food data based on trilateration, measuring the relative or absolute difference in the time it takes for a signal from the identification element, in response to a call, to propagate from the identification element to the first transmitter / receiver (20) that sent the call.
[9]
Device according to any one of claims 1 - 8, wherein communication between the second transmitter / receiver (30) and an identification element (10) is leased via the first sanders / receivers (20).
[10]
Device according to any one of claims 1 - 9, wherein the second transmitter / receiver (30) comprises means (32) for data communication with an external network via, for example, Ethernet.
[11]
Device according to any one of claims 1 to 10, wherein the identification element (10) comprises a calculating unit with a memory part (13).
[12]
A device according to any one of claims 1 to 10, wherein the object with which an identification element (10) is intended to be associated comprises a luminaire. Pans prior to PRV 12
[13]
Device according to claim 12, wherein the identification element (10) has a communication module (12) which allows sharing of one or more of the sweeping operating and control data, power and driving voltage with the operating electronics of the luminaire. Pans prior IN PRV WPAN I WPAN
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同族专利:
公开号 | 公开日
DK2908611T3|2017-06-19|
EP2908611B1|2017-03-29|
ES2629416T3|2017-08-09|
EP2908611A1|2015-08-19|
SE538696C2|2016-10-18|
引用文献:
公开号 | 申请日 | 公开日 | 申请人 | 专利标题

DE102006035557A1|2006-04-21|2007-11-15|Erco Leuchten Gmbh|lamp|
US8823277B2|2008-04-14|2014-09-02|Digital Lumens Incorporated|Methods, systems, and apparatus for mapping a network of lighting fixtures with light module identification|
US8994295B2|2009-09-05|2015-03-31|Enlighted, Inc.|Commission of distributed light fixtures of a lighting system|DE102016121977A1|2016-11-16|2018-05-17|Osram Gmbh|Create an installation layout of a lighting system|
DE102017122296A1|2017-09-26|2019-03-28|Herbert Waldmann Gmbh & Co. Kg|Method for operating at least one lamp and lighting device|
US10470155B2|2017-11-30|2019-11-05|Abl Ip Holding Llc|Commissioning of an indoor positioning system using a secondary positioning system|
法律状态:
优先权:
申请号 | 申请日 | 专利标题
SE1450177A|SE538696C2|2014-02-15|2014-02-15|Device for locating and identifying objects in a single room and permitting access to a contextual service.|SE1450177A| SE538696C2|2014-02-15|2014-02-15|Device for locating and identifying objects in a single room and permitting access to a contextual service.|
ES15154779.1T| ES2629416T3|2014-02-15|2015-02-12|Device to locate and identify objects in a room and allow access to a contextual service|
EP15154779.1A| EP2908611B1|2014-02-15|2015-02-12|A device for locating and identifying objects in a room and allowing access to a contextual service|
DK15154779.1T| DK2908611T3|2014-02-15|2015-02-12|Device for locating and identifying objects in a room and providing access to a contextual service|
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