EP1321912B1 - Dispositif électrique pour la transmission de données - Google Patents

Dispositif électrique pour la transmission de données Download PDF

Info

Publication number
EP1321912B1
EP1321912B1 EP20010130779 EP01130779A EP1321912B1 EP 1321912 B1 EP1321912 B1 EP 1321912B1 EP 20010130779 EP20010130779 EP 20010130779 EP 01130779 A EP01130779 A EP 01130779A EP 1321912 B1 EP1321912 B1 EP 1321912B1
Authority
EP
European Patent Office
Prior art keywords
data
light
electrical device
light source
pump
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.)
Expired - Lifetime
Application number
EP20010130779
Other languages
German (de)
English (en)
Other versions
EP1321912A1 (fr
Inventor
John Bomholt
Martin Büskov Skafsgaard
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.)
Grundfos AS
Original Assignee
Grundfos AS
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 Grundfos AS filed Critical Grundfos AS
Priority to DE50114450T priority Critical patent/DE50114450D1/de
Priority to EP20010130779 priority patent/EP1321912B1/fr
Publication of EP1321912A1 publication Critical patent/EP1321912A1/fr
Application granted granted Critical
Publication of EP1321912B1 publication Critical patent/EP1321912B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
    • G08C23/04—Non-electrical signal transmission systems, e.g. optical systems using light waves, e.g. infrared

Definitions

  • the invention relates to a pump unit according to the preamble of claim 1.
  • Pumps usually have display elements for displaying an operating state. These display elements are usually lamps or light emitting diodes whose illumination or extinction of an operator indicate a corresponding operating state of the associated device. Furthermore, devices for data transmission are provided in many control devices. For example, in circulation pumps, an infrared interface is provided, via which operating data of the pump can be read out and settings of the control or regulating electronics can be made in order to adapt the pump to specific system conditions.
  • a pump unit is provided with an electrical device which forms the control or regulating device of the pump and is arranged in a terminal box directly on the pump or its drive.
  • an indicator light is provided in the form of a light-emitting diode, which indicates whether the pump is in operation.
  • This indicator light can now be used simultaneously to transmit certain operating data of the pump, which go beyond the mere display of a specific operating state, to the outside, without the need for additional data transmission elements, such as infrared diodes must be provided on the pump.
  • the number of required components can be reduced, whereby the pump is less expensive to produce.
  • the number of openings in the pump housing, in which display and control elements are used can be reduced, whereby the seal of the pump housing can be improved.
  • the electrical device has a light source for emitting visible light to indicate an operating condition.
  • the light source may indicate, by lighting up, that the electrical device is in operation.
  • the light source does not emit light, it indicates that the electrical device is out of service.
  • the light emitted by the light source is used in addition to the transmission of machine-readable data to a corresponding reader.
  • the reader may be any suitable device to which data is to be transmitted from the electrical device.
  • the reading device may be a remote control, a maintenance device or a control device.
  • infrared interfaces that is, infrared diodes, which transmit the data in the invisible spectrum so that they can be received by readers.
  • the data transmission is now carried out accordingly by visible light.
  • the reader is like that adapted so that it can capture the data in the visible light spectrum.
  • an additional element such as an infrared interface for data transmission can be saved, since the data transmission is effected by an already existing light source for displaying an operating state.
  • the light source thus assumes two functions according to the invention, on the one hand to visibly display an operating state for a user and, on the other hand, to transmit machine-readable data to a reading device, which are preferably not recognizable to the user.
  • the number of openings required in a housing of the electrical device can also be reduced, so that the seal can be improved, for example, against penetrating moisture. This is particularly important in the field of pump technology, since pumps are often used in humid environments. Furthermore, the number of required components reduces the assembly and manufacturing costs.
  • the emitted light is pulsed for data transmission.
  • data can be encoded in digital form as corresponding light pulses, which can be detected by a reading device.
  • the light is pulsed so fast that the pulses are not perceived by the human eye. An operator thus only perceives a constantly illuminated light source, which indicates to it a specific operating state of the electrical device, for example, that the electrical device is in proper operation.
  • a suitably equipped reader is capable of detecting rapid light pulses for which human perception is too slow, and of reading data transmitted in this way.
  • the pulses can be generated by turning the light source on and off in rapid succession. However, it is also conceivable to vary only the light intensity or brightness. In this way it is possible to transmit analog signals as well.
  • modulation it is possible to modulate the emitted light for data transmission. It is also possible by modulation to transmit machine-readable information via a light signal.
  • the light source being constantly lit, which is achieved by transmitting the information through modulations, pulses or intensity fluctuations which are imperceptible to the human eye due to their insignificance or speed.
  • the light source is preferably a light emitting diode.
  • Light emitting diodes are often used as display elements because they have low power consumption and high durability. Such an existing anyway for displaying an operating state of the electrical device light emitting diode can now be used simultaneously for data transmission, so that can be dispensed with additional data transmission devices.
  • the pump unit enables a method for transmitting data between the electrical device and an associated reading device.
  • the data is transmitted by visible light, which is emitted from an electrical device for displaying a Operating state existing indicator light is emitted, transmitted to the reader.
  • one and the same element serves both to optically indicate an operating condition for an operating person and to output machine-readable data which is only detected by a special reading device and preferably can not be perceived by an operator.
  • the operator can recognize the data transmission in the form of, for example, a slight flickering of the indicator light, he will not be able to grasp the meaning of the information.
  • a photosensor for receiving the data is provided on the reading device.
  • a photosensor can detect pulses, intensity fluctuations or modulations of the visible light, which are not detectable by the human eye due to its inertia.
  • the signals output by the photosensor are then forwarded to a corresponding evaluation unit, for example in the form of a microcomputer, which then further processes and processes the received data accordingly.
  • the data is transmitted in digital form.
  • the transmission and processing of digital data is common today.
  • digital data can be output from a CPU provided in the electrical device or a microcomputer to the light source, which sends them to the outside, where they can be recorded and evaluated by appropriate readers and electronic devices.
  • the digital data transmission is preferably carried out by pulsing the visible light for data transmission.
  • the light source is in fast sequence on and off to transfer data in digital encoding. If the pulses are sufficiently short or fast, they can no longer be detected by the human eye due to its inertia, so that the light source acts on an operator as if it is constantly lit. However, the light can also be pulsed so that the light intensity is varied. In this way, data or information can be transmitted in digital or analog form in the form of intensity fluctuations.
  • the data to be transmitted from the indicator light are emitted continuously and preferably cyclically repeating. That is, the data is serially transmitted continuously without requiring a request signal to start the data transfer.
  • To read the data simply the associated reader in view or transmission distance is brought to the indicator light.
  • the reader is preferably arranged to recognize from the transmitted data when a data cycle begins and then to begin collecting and evaluating the data.
  • an initial signal may be contained in the data which characterizes the beginning of a data record or cycle.
  • the electrical device has an output module or an output device, which is controlled by the control electronics of the electrical device.
  • the output device activates the light source to indicate an operating condition to an operator.
  • the light source is turned on to indicate that the electrical device is connected to a power source, that is, turned on.
  • certain data such as operating data of the electrical device are transmitted to the outside for evaluation, the output device superimposed on the light emitted by the light source visible light, the corresponding data or information in coded form.
  • the light source is pulsed by the output unit or the light intensity is varied accordingly. This pulsing or modulation takes place according to the data or information to be transmitted.
  • These can be transmitted, for example, in digital form by quickly switching the light source on and off.
  • the switching on and off is preferably so fast that it is imperceptible to the human eye.
  • brightness or intensity fluctuations which are generated by the output unit when driving the light source, it is also possible to transmit analog signals.
  • the data or information from the light source is continuously or constantly sent, whether they are currently being received by a reader or not. To receive the data, it is then only necessary to bring the corresponding reader within sight of the light source so that it can receive the data emitted by the light source. Since the data is preferably sent continuously and cyclically repeating, it is possible to read out the data without having to externally signal the electrical device that a data transmission process should be started. For this purpose, the data can be output by an output device in such a way that it emits an initial signal via the light source at the beginning of a data record which signals the reading device to start a data set or cycle.
  • the data to be transmitted are output in the form of control signals to the light source and radiated from the latter in the form of light signals.
  • an end signal can be output additionally.
  • the process repeats and the record is retransmitted in the manner described. In this way, data can be read out at any time with a suitable reading device, without transmitting a data request to the electrical device.
  • a switch or a similar input device in the electrical device, by the actuation of which a data transmission is started.
  • a button on the electrical device could then be pressed for data transmission, whereupon an output device starts to send data via the light source, which can then be received by a corresponding reading device.
  • a receiving element in the electrical device in order to transmit data and information from the outside into the electrical device. This can also be done as described by visible light.
  • a conventional infrared receiver in the electrical device According to the invention, however, an additional transmitting device would continue to be saved since the transmission of the data from the electrical device is taken over by the light source or the display element for displaying an operating state.
  • a receiving device on the electrical device is not required. For example, it is sufficient for circulating pumps to read current temperature and / or performance data from the pump, for example, to detect operating conditions for a heating system.
  • a memory element is provided in the electrical device, which stores operating data, such as power and temperature, or occurring fault over a certain period of time. This information can then be read later in the manner described from the electrical device, for example, to check the proper operation of the electrical device.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Communication System (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Claims (4)

  1. Unité de pompage, comprenant un dispositif de commande et de régulation disposé dans une boîte à bornes pour la commande et la régulation d'un entraînement de la pompe, dans laquelle le dispositif de commande et de régulation présente une source lumineuse permettant d'émettre une lumière visible destinée à l'affichage d'un état de fonctionnement, caractérisée en ce que la lumière émise sert en outre à transmettre des données lisibles par machine à un dispositif de lecture.
  2. Unité de pompage selon la revendication 1, dans laquelle la lumière émise est pulsée pour la transmission des données.
  3. Unité de pompage selon l'une des revendications précédentes, dans laquelle la lumière émise est modulée pour la transmission des données.
  4. Unité de pompage selon l'une des revendications précédentes, dans laquelle la source lumineuse est une diode électroluminescente.
EP20010130779 2001-12-22 2001-12-22 Dispositif électrique pour la transmission de données Expired - Lifetime EP1321912B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE50114450T DE50114450D1 (de) 2001-12-22 2001-12-22 Elektrische Einrichtung zur Datenübertragung
EP20010130779 EP1321912B1 (fr) 2001-12-22 2001-12-22 Dispositif électrique pour la transmission de données

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20010130779 EP1321912B1 (fr) 2001-12-22 2001-12-22 Dispositif électrique pour la transmission de données

Publications (2)

Publication Number Publication Date
EP1321912A1 EP1321912A1 (fr) 2003-06-25
EP1321912B1 true EP1321912B1 (fr) 2008-10-29

Family

ID=8179688

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010130779 Expired - Lifetime EP1321912B1 (fr) 2001-12-22 2001-12-22 Dispositif électrique pour la transmission de données

Country Status (2)

Country Link
EP (1) EP1321912B1 (fr)
DE (1) DE50114450D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010020461A1 (de) * 2010-05-10 2011-11-10 Siemens Aktiengesellschaft Verfahren und Vorrichtung zur Übertragung von Daten von einem LED-Lichtsignal an eine Empfangseinrichtung

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2858892A1 (fr) * 2003-08-14 2005-02-18 Novatys Systeme de commande a distance par analyse de signaux lumineux issus d'une source de lumiere habituellement destinee a l'eclairage
GB2460721A (en) * 2008-06-13 2009-12-16 Red Dot Technologies Ltd Electrical apparatus having operation status indicator which cn transmit parameter values
EP3222019B2 (fr) 2014-11-17 2024-04-03 Grundfos Holding A/S Autoriser un dispositif de communication portatif à accéder à une unité de pompe
WO2016086986A1 (fr) * 2014-12-03 2016-06-09 Grundfos Holding A/S Ensemble convertisseur électronique à des fins de montage en rattrapage sur une partie externe d'un boîtier d'une unité de pompage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5031178A (en) * 1988-10-12 1991-07-09 American Standard Inc. Apparatus and method for ground isolated system diagnostics
US5777893A (en) * 1993-08-04 1998-07-07 Electromatic (Proprietary) Limited Inductive loop diagnostic interface

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010020461A1 (de) * 2010-05-10 2011-11-10 Siemens Aktiengesellschaft Verfahren und Vorrichtung zur Übertragung von Daten von einem LED-Lichtsignal an eine Empfangseinrichtung

Also Published As

Publication number Publication date
EP1321912A1 (fr) 2003-06-25
DE50114450D1 (de) 2008-12-11

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