EP4146577A1 - Lichtmodulationseinrichtung einer aufzugsanlage und lichtmodulationsübertragungsverfahren - Google Patents
Lichtmodulationseinrichtung einer aufzugsanlage und lichtmodulationsübertragungsverfahrenInfo
- Publication number
- EP4146577A1 EP4146577A1 EP21722878.2A EP21722878A EP4146577A1 EP 4146577 A1 EP4146577 A1 EP 4146577A1 EP 21722878 A EP21722878 A EP 21722878A EP 4146577 A1 EP4146577 A1 EP 4146577A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- electrical signal
- signal
- elevator system
- elevator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009434 installation Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000005540 biological transmission Effects 0.000 title description 14
- 230000006854 communication Effects 0.000 claims description 20
- 238000004891 communication Methods 0.000 claims description 20
- 230000008901 benefit Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000007175 bidirectional communication Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3415—Control system configuration and the data transmission or communication within the control system
- B66B1/3446—Data transmission or communication within the control system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3415—Control system configuration and the data transmission or communication within the control system
- B66B1/3446—Data transmission or communication within the control system
- B66B1/3461—Data transmission or communication within the control system between the elevator control system and remote or mobile stations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/46—Adaptations of switches or switchgear
- B66B1/468—Call registering systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
- H04B10/54—Intensity modulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B2201/00—Aspects of control systems of elevators
- B66B2201/40—Details of the change of control mode
- B66B2201/46—Switches or switchgear
- B66B2201/4607—Call registering systems
- B66B2201/4638—Wherein the call is registered without making physical contact with the elevator system
Definitions
- the present invention relates to a light modulator device in an elevator installation or to a light modulation method in an elevator installation.
- the invention relates to an elevator system which has such a light modulation device or is controlled by the aforementioned method.
- An elevator system is used to transport people within a building by vertically moving an elevator car in an elevator shaft between different floors (luras) of the building.
- an external wireless communication network e.g. Internet or point network, etc.
- a metal coating or wire mesh in the walls could severely attenuate or block the signals. That is why there is generally no cell phone reception in an elevator car or in an elevator shaft.
- expensive antennas or several WLAN access points must be arranged in the elevator car or in the elevator shaft.
- the Internet of Things refers to the increasing networking of devices, sensors, etc. via an IP network.
- IoT the area of application in industry and services is expanding to different sectors.
- the elevator industry can also benefit from an application of the IoT, ie connecting any device including elevators to the Internet and other connected devices.
- the current state of communication technology offers many possibilities to enable data exchange between individual participants in a network.
- robots are among the participants more and more often because, in addition to conventional use in various production processes, new tasks for robots have also developed in other sectors, in particular in logistics or services such as in gastronomy and as domestic helpers.
- the so-called “last mile” represents a great challenge in logistics, whereby the “last mile” comprises the last stretch of the journey, which is a delivery in e-commerce logistics, for example of goods on site to the customer.
- the increasing number of parcels can be distributed quickly and safely with as little effort as possible. That is why more and more mobile transport robots are being used.
- classic communication connections via the mobile Internet such as 3G, 4G and even 5G or WLAN are predominantly used to connect robots to data communication. But such data communications do not always meet criteria that require a high level of data protection for customer data.
- there are similar or the same problems as with mobile telephones that mobile robots in buildings are not always available and consequently cannot be fully used because robots are not or only with difficulty able to negotiate different floors with elevators and to move in a goal-oriented manner in buildings.
- An object of the present invention to be achieved can be seen in ensuring data communication between an elevator and mobile apparatus, in particular robots, for operating the elevator or before or during the elevator journey, safely and reliably.
- a light modulator device of an elevator system with an elevator system having a lighting device, the lighting device comprising two or more identical or different light-emitting diodes.
- the light modulator device has a modulator which can receive a first electrical signal from a control unit of the elevator installation.
- the control unit can be a main control or a subordinate sub-control of the elevator installation.
- the modulator can control the lighting device in such a way that the lighting device has a first Generated light signal for coding the first electrical signal.
- the modulator can switch the light-emitting diodes on and off and / or adjust their brightness, the modulator being able to switch the light-emitting diodes synchronously or asynchronously and / or adjust their brightness.
- an electrical signal can be converted into an optical signal and further transmitted.
- a light modulation method is provided in an elevator system, the elevator system having an elevator car with a lighting device which comprises two or more identical or different light-emitting diodes.
- a first electrical signal is generated by a control unit of the elevator installation; the lighting device is controlled for modulating the first electrical signal in such a way that a first light signal for coding the first electrical signal is generated by the lighting device, the light-emitting diodes being switched on and off and / or their brightness being adjusted, and the lighting device the light-emitting diodes is modulated in that the light-emitting diodes and / or their brightness is switched and / or adjusted synchronously or asynchronously.
- an elevator installation which has at least one light modulator device according to the first aspect of the invention or is monitored by a light modulation method according to the second aspect of the invention.
- the light modulation can be implemented, for example, by LiFi technology (LiFi: Light Fidelity).
- LiFi also known as free-beam communication (VLC: Visible Light Communications)
- VLC Visible Light Communications
- WiFi Wireless Fidelity
- WiFi uses electromagnetic waves for data transmission
- LiFi uses light waves from illuminants.
- light modulation for data transmission offers several advantages, such as fast wireless data transmission with a data rate currently in the gigabit range, namely at more than 10 gigabits per second (Gbit / s), which is many times faster than that previous cellular networks or WiFi.
- the light modulation is therefore suitable for the transmission of large data packets, e.g. video data in HD and 4K quality.
- Such data transmission has no interference, as light radiation are free of high frequency waves and have no problem with EMC (electromagnetic compatibility), which means that electrical or electronic equipment is not disturbed by data transmission.
- EMC electromagagnetic compatibility
- a light as a signal carrier provides a high level of data security for data transmission within an elevator car, because a shaft wall or elevator car is automatically considered a reliable firewall for light waves, ie the data transmission cannot be determined from the outside.
- the lighting device comprises two or more light-emitting diodes (LEDs), wherein the modulator can switch the light-emitting diode on and off and / or adjust its brightness to modulate the first electrical signal.
- the modulator can switch the LED on and off very quickly or change its brightness so that the human eyes cannot perceive it.
- the first electrical signal can be converted fairly into the first light signal.
- the brightness is only set up to a certain limit value so that the intensity of the light does not decrease due to dimming to impair data transmission.
- the lighting device comprises several identical or different light-emitting diodes, the modulator being able to switch the light-emitting diodes synchronously or asynchronously and / or adjust their brightness.
- a light signal can consist of one or more light rays or waves. With a higher number of LEDs, a considerable expansion of the capacity of wireless data transmission (bandwidth) can be made possible.
- the control unit of the elevator installation can communicate with a local and / or a public communication network.
- the first electrical signal can be a data packet which corresponds to or is compatible with the network protocol of the respective communication network (for example LAN, WLAN, Internet, mobile radio or cloud, etc.).
- the first electrical signal can therefore either be generated by the elevator installation or transmitted via the communication network.
- the light data transmission also works bidirectionally.
- the light modulator device can be communicated with a mobile terminal, wherein the first light signal can be received by the mobile terminal for decoding the first electrical signal, and / or the mobile terminal can generate a second light signal for encoding a second electrical signal.
- the second electrical signal can also be in a different data form than that of the first electrical signal.
- the mobile terminal has, for example, a loto diode or a photoelectric sensor that picks up light and converts it into electrical signals.
- the mobile terminal for example, infrared LEDs can be used to generate the second light signal in order to avoid signal interference or light interference.
- the light modulator device comprises a demodulator which can demodulate the second light signal to decode the second electrical signal, the decoded second electrical signal (e.g. in binary code) being passed on to the control unit of the elevator system.
- the second electrical signal can also be forwarded from the elevator system via the communication network to other devices, such as an external server or a learning center, whereby the second electrical signal can also be a data packet.
- the mobile terminal is a robot that can operate the elevator system by generating the second light signal and / or navigate in a building in which the elevator system is located by receiving the first light signal.
- the robot can then communicate with the elevator system and navigate target-oriented within the multi-storey building.
- a robot can optimally shorten or traverse its “last mile” thanks to the possibility of communication with elevators.
- the robot can, for example, receive directions and control the elevator by sending a second light signal. Since the “last mile” is covered exclusively with the help of unnoticeable or invisible coded light signals, without entering a destination for the elevator or inquiring about it, customer data can be better protected.
- Fig.l shows an elevator system with a light modulator device according to the invention and a mobile robot
- the elevator installation 2 furthermore has a control unit 6 and a storage unit 12, the control unit 6 being connected via the Internet 8 to other devices such as servers, service platforms or remote control centers 18.
- a light modulator device 1 is provided for the elevator installation 2.
- the light modulator device 1 comprises a modulator 5, which receives a first electrical signal 16, for example in the form of binary codes, from the control unit 6.
- the first binary code 16 can either be generated by the control unit 6 itself or from the storage unit 12 of the elevator installation 2 or via the Internet 8 from a server 18 can be obtained.
- the modulator 5 controls the LEDs 7 of the lighting device 1 in such a way as to modulate the first binary code 16 by the modulator 5 switching the LEDs 7 on and off individually - synchronously or asynchronously.
- the LEDs 7 then illuminate accordingly and emit a first light signal 14 according to the first code 16, the light signal having a plurality of light radiations.
- a lit LED represents a binary code "1"
- a non-lit LED represents a binary code "0".
- Modulation can also be carried out by dimming the LEDs 7, with different, specific brightnesses of illuminated LEDs 7 each being able to represent a digital “1” or “0”.
- the first code 16 can then be encoded with light signals by slightly changing the brightness of LEDs.
- the first code 16 can thus be modulated by the light modulator device 1 and properly converted into the first light signal 14 by means of the lighting device 4.
- data can be transmitted between the light modulator device 1 and a mobile robot 9 if the robot 9 is equipped with a photoelectric sensor or a digital video camera (not shown).
- the robot is preferably a mobile vehicle that moves autonomously and communicates with the environment via sensors and interfaces.
- the photoelectric sensor of the robot 9 can receive the generated first light signal 14 and convert it back into the first code 16.
- the data transmission can also be a bidirectional communication, that is, a second light signal 15, which is generated by the robot 9 and encodes a second code 17, is also detected and demodulated by a demodulator 10 of the light modulator device 1, whereby the second code 17 is removed from the second light signal 15 is decoded.
- the second code 17 is then forwarded to the control unit 6 of the elevator installation, the second code 17 also being able to be a binary code or in another data form.
- the second code 7 is also stored in the memory unit 12 or, if necessary, forwarded via the Internet 8 to the server or a learning center 18.
- a communication method takes place between an elevator installation 2 and a robot 9.
- the control unit 6 When an elevator car 3 of the elevator system 2 stops on a floor, the control unit 6 generates a first binary code 16, which, for example Contains information about a readiness or travel request. After a modulation, a first light signal 14 is generated by a lighting device 4 in the elevator car 3 according to the first code 16.
- the robot 9 drives into the elevator car 3, it receives the first light signal 14.
- the robot 9 recovers the first code 16 through demodulation, so that the robot 9 receives the travel request.
- the robot 9 As a response to the travel request, the robot 9 generates a second code 17 and modulates it into a second light signal 17, the second code containing, for example, information about a destination input.
- the second light signal 17 can optionally be generated by infrared LEDs, whereby the light is not visible.
- the elevator system 2 can receive the second code 17 or the information contained therein.
- the elevator installation can in turn generate a further first code 16.
- This code can, for example, contain information for a so-called “last mile”, which includes, for example, navigation data, precise room number and / or a special note for the robot 9.
- the communication between the elevator system 2 and the mobile robot 9 exclusively requires unnoticeable or invisible light waves as data transmitters, such communication is more reliable, more interference-free and safer than radio technologies such as WiFi. This means that the data exchange via customer data can be better protected over the last mile.
- the robot 9 can communicate reliably and in a customer-friendly manner with the elevator system 2 so that it can operate the elevator system 2 and move quickly in the building 11. For example, a room map and position data for precise indoor navigation in the interior of the building 11 could be transmitted to the robot 9.
- the robot 9 can first generate a second code 17, which contains, for example, a drive request or a destination call, without waiting for a first light signal.
- the second code 17 is converted into a second light signal 15, which is picked up and demodulated by the elevator system 2 so that the second code 17 can be transmitted to the elevator system 2 and retrieved.
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Signal Processing (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20173723 | 2020-05-08 | ||
PCT/EP2021/061521 WO2021224160A1 (de) | 2020-05-08 | 2021-05-03 | Lichtmodulationseinrichtung einer aufzugsanlage und lichtmodulationsübertragungsverfahren |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4146577A1 true EP4146577A1 (de) | 2023-03-15 |
Family
ID=70680292
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21722878.2A Pending EP4146577A1 (de) | 2020-05-08 | 2021-05-03 | Lichtmodulationseinrichtung einer aufzugsanlage und lichtmodulationsübertragungsverfahren |
Country Status (4)
Country | Link |
---|---|
US (1) | US20230183038A1 (de) |
EP (1) | EP4146577A1 (de) |
CN (1) | CN115515877A (de) |
WO (1) | WO2021224160A1 (de) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2856504B2 (ja) * | 1990-05-25 | 1999-02-10 | 株式会社東芝 | 作業ロボット及びその運搬を兼ねたエレベータ制御システム |
JP2006148798A (ja) * | 2004-11-24 | 2006-06-08 | Toshiba Elevator Co Ltd | 防犯映像管理システム |
JP2007137650A (ja) * | 2005-11-22 | 2007-06-07 | Mitsubishi Electric Corp | エレベーターシステム |
JP2009051617A (ja) * | 2007-08-27 | 2009-03-12 | Fuji Heavy Ind Ltd | エレベータ制御システム |
CN105347125B (zh) * | 2015-11-23 | 2017-12-22 | 日立电梯(中国)有限公司 | 电梯召梯通信系统 |
JP2017226523A (ja) * | 2016-06-23 | 2017-12-28 | 株式会社日立ビルシステム | 昇降機用保守システム、昇降機用保守方法及び昇降機の無線通信装置 |
-
2021
- 2021-05-03 US US17/997,567 patent/US20230183038A1/en active Pending
- 2021-05-03 CN CN202180033637.9A patent/CN115515877A/zh active Pending
- 2021-05-03 WO PCT/EP2021/061521 patent/WO2021224160A1/de unknown
- 2021-05-03 EP EP21722878.2A patent/EP4146577A1/de active Pending
Also Published As
Publication number | Publication date |
---|---|
WO2021224160A1 (de) | 2021-11-11 |
US20230183038A1 (en) | 2023-06-15 |
CN115515877A (zh) | 2022-12-23 |
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