WO2013037681A1 - An illuminating device with data modulation transmission portable receiver for receiving transmitted data - Google Patents

An illuminating device with data modulation transmission portable receiver for receiving transmitted data Download PDF

Info

Publication number
WO2013037681A1
WO2013037681A1 PCT/EP2012/067283 EP2012067283W WO2013037681A1 WO 2013037681 A1 WO2013037681 A1 WO 2013037681A1 EP 2012067283 W EP2012067283 W EP 2012067283W WO 2013037681 A1 WO2013037681 A1 WO 2013037681A1
Authority
WO
WIPO (PCT)
Prior art keywords
illuminating device
emitting assembly
led light
information
led
Prior art date
Application number
PCT/EP2012/067283
Other languages
French (fr)
Inventor
Xuewei Dai
Xihe ZHUANG
Yan Li
Chunjun JIANG
Original Assignee
Osram Gmbh
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 Osram Gmbh filed Critical Osram Gmbh
Publication of WO2013037681A1 publication Critical patent/WO2013037681A1/en

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
    • H05B45/58—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits involving end of life detection of LEDs
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/40—Details of LED load circuits
    • H05B45/44—Details of LED load circuits with an active control inside an LED matrix
    • H05B45/48—Details of LED load circuits with an active control inside an LED matrix having LEDs organised in strings and incorporating parallel shunting devices

Definitions

  • the present invention relates to an illuminating device.
  • the present invention further relates to an information sending and receiving apparatus with the illuminating device.
  • LED illuminating devices are used in daily life because the LED illuminating device saves more energy and has a longer service lifetime and better luminous efficiency.
  • an LED chip emits light that has a certain frequency.
  • the LED is dimmed through the PWM technology.
  • an LED driving circuit is dimmable with a method of variable duty cycle. That is to say, a frequency of output light is unchanged, and human eyes will not sense flash of a lamp when dimming.
  • information can be transmitted by the frequency if the frequency is changed in a situation of assuring the frequency not to be lower than a flash fre ⁇ quency recognizable by human eyes.
  • the present invention provides an illuminating device that can transmit information and dimmed in a situation that human eyes do not detect the flash of a lamp.
  • the present inven- tion further relates to an information sending and receiving apparatus with such illuminating device.
  • the il- luminating device comprises an LED light-emitting assembly and an LED driver that connects the LED light-emitting assembly to a power supply and drives the LED light-emitting as ⁇ sembly
  • the LED driver further comprises a PWM control unit that generates a PWM signal with a variable fre- quency, and the LED driver drives the LED light-emitting as ⁇ sembly, according to the PWM signal, to emit light.
  • the PWM control unit can dim the LED light-emitting assembly in a manner of adjusting a duty cycle.
  • information at the beginning of configuration corresponding to the frequency can be represented with the varying frequency.
  • the PWM control unit generates the PWM signal with a fre ⁇ quency shifting at a fixed frequency value.
  • the PWM control unit modulates the PWM signal with the frequency shifting at the fixed frequency value so that the LED light-emitting assembly is promoted to emit light at the shifted frequency, accordingly, information corresponding to the frequency can be obtained after the frequency is identi ⁇ fied.
  • the information might be simple information of service duration of the LED light-emitting assembly.
  • the PWM control unit generates the PWM signal with a frequency fluctuating in a fixed waveform.
  • ⁇ the PWM control unit
  • the frequency of the PWM signal fluctuates in a form of wave, and a fixed waveform in one pulse corresponds to "1" or "0" of binary code, so that complex information can be interpreted from this frequency, e.g. information of specification and manufacturer of the LED light-emitting assembly of the illuminating device, and information indicating a fault of the LED light-emitting assembly or LED driver of the illuminating device.
  • the varying frequency is higher than 200Hz, preferably higher than 250Hz, higher than which, it absolutely can assure that human eyes will not de ⁇ tect flash of the LED light-emitting assembly.
  • the other object of the present invention is accomplished via an information sending and receiving apparatus through the following solution.
  • the information sending and receiving apparatus comprises an receiver and the illuminating device above as an sender, wherein the receiver comprises a sensor unit, a decoding unit connected to the sensor unit and a user interface unit connected to the decoding unit, and wherein the sensor unit receives light from the illuminating device, the decoding unit decodes a frequency of light received and outputs a digital signal, and the user interface unit outputs information according to the digital signal.
  • Information can be sent and received using such information sending and receiving apparatus without an extra circuit.
  • the information is one selected from information of service duration of the LED light-emitting assembly, information of specification and manufacturer of the LED light-emitting assembly of the illu- minating device and information indicating a fault of the LED light-emitting assembly or LED driver of the illuminating de- vice .
  • the receiver is configured to be portable, which is quite favorable for operation between different illuminat ⁇ ing devices and reduces a working load of an operator.
  • Fig. 1 is a schematic diagram of an illuminating device ac- cording to the present invention.
  • Fig. 2 is a schematic diagram of an information sending and receiving apparatus according to the present invention.
  • Fig. 1 is a schematic diagram of an illuminating device ac- cording to the present invention.
  • the illuminating device comprises an LED light-emitting assembly 1 and an LED driver 3 that connects the LED light- emitting assembly 1 to a power supply 2 and drives the LED light-emitting assembly 1.
  • the LED driver 3 further comprises a PWM control unit 4. It further can be seen from Fig. 1 that the LED light-emitting assembly 1 and the LED drier 3 are arranged in a lamp shell 8, and a trans- parent lamp cover 9 is provided at one side of a light emer ⁇ gent opening of the LED light-emitting assembly 1.
  • the PWM control unit 4 generates a PWM signal with a variable frequency, and the LED driver 3 drives the LED light-emitting assembly 1, according to the PWM signal, to emit light with a varying frequency.
  • the PWM control unit 4 adjusts a frequency of light emitted from the LED light-emitting assembly 1, for instance, when a fre- quency of light emitted from the LED light-emitting assembly 1 is 300Hz, it means that the LED light-emitting assembly 1 has just worked; the frequency shifts to 310Hz after modu ⁇ lated by the PWM control unit 4, it means that at this time the LED light-emitting assembly 1 has worked for one year; and after the frequency shifts to 400Hz, it means that the LED light-emitting assembly 1 has worked for ten years and has reached it service lifetime.
  • the PWM control unit 4 generates the PWM signal with a frequency fluctuating in a fixed waveform.
  • the frequency of the PWM signal fluctuates in a form of wave
  • a fixed waveform in one pulse corresponds to "1" or "0" of binary code, so that complex information can be interpreted from this frequency, e.g. information of specification and manu- facturer of the LED light-emitting assembly 1 of the illuminating device, and information indicating a fault of the LED light-emitting assembly 1 or LED driver 2 of the illuminating device ..
  • Fig. 2 is a schematic diagram of an information sending and receiving apparatus according to the present invention.
  • the information sending and receiving apparatus comprises the illuminating device above as an sender and a portable receiver.
  • the receiver comprises a sensor unit 5, a decoding unit 6 connected to the sensor unit 5 and a user interface unit 7 connected to the decoding unit 6, wherein the sensor unit 5 receives light from the illumi ⁇ nating device, the decoding unit 6 decodes the frequency of light received and outputs a digital signal, and the user in ⁇ terface unit 7 outputs information according to the digital signal.
  • the output information is one selected from, e.g.

Abstract

The present invention relates to an illuminating device com- prising an LED light-emitting assembly (1) and an LED driver (3) that connects the LED light-emitting assembly (1) to a power supply (2) and drives the LED light-emitting assembly (1), wherein the LED driver (3) further comprises a PWM control unit (4) that generates a PWM signal with a variable frequency, and the LED driver (3) drives the LED light-emitting assembly (1), according to the PWM signal, to emit light. In addition, the present invention further relates to an information sending and receiving apparatus with such illuminating device.

Description

Description
AN ILLUMINATING DEVICE WITH DATA MODULATION TRANSMISSION PORTABLE RECEIVER FOR RECEIVING TRANSMITTED DATA
Technical Field
The present invention relates to an illuminating device. In addition, the present invention further relates to an information sending and receiving apparatus with the illuminating device.
Background Art
More and more LED illuminating devices are used in daily life because the LED illuminating device saves more energy and has a longer service lifetime and better luminous efficiency. In the practical operation of the LED illuminating device, an LED chip emits light that has a certain frequency. In the prior art, the LED is dimmed through the PWM technology. For instance, an LED driving circuit is dimmable with a method of variable duty cycle. That is to say, a frequency of output light is unchanged, and human eyes will not sense flash of a lamp when dimming. However, information can be transmitted by the frequency if the frequency is changed in a situation of assuring the frequency not to be lower than a flash fre¬ quency recognizable by human eyes. Summary of the Invention
In order to solve the above technical problems, the present invention provides an illuminating device that can transmit information and dimmed in a situation that human eyes do not detect the flash of a lamp. In addition, the present inven- tion further relates to an information sending and receiving apparatus with such illuminating device.
One object of the present invention is accomplished via an illuminating device through the following solution. The il- luminating device comprises an LED light-emitting assembly and an LED driver that connects the LED light-emitting assembly to a power supply and drives the LED light-emitting as¬ sembly, wherein the LED driver further comprises a PWM control unit that generates a PWM signal with a variable fre- quency, and the LED driver drives the LED light-emitting as¬ sembly, according to the PWM signal, to emit light. Accord¬ ing to the present invention, the PWM control unit can dim the LED light-emitting assembly in a manner of adjusting a duty cycle. Moreover, when the frequency is modulated and the LED light-emitting assembly is enabled to emit light at this varying frequency, information at the beginning of configuration corresponding to the frequency can be represented with the varying frequency.
According to a preferred solution of the present invention, the PWM control unit generates the PWM signal with a fre¬ quency shifting at a fixed frequency value. In this solu¬ tion, the PWM control unit modulates the PWM signal with the frequency shifting at the fixed frequency value so that the LED light-emitting assembly is promoted to emit light at the shifted frequency, accordingly, information corresponding to the frequency can be obtained after the frequency is identi¬ fied. The information might be simple information of service duration of the LED light-emitting assembly.
According to another preferred solution of the present inven- tion, the PWM control unit generates the PWM signal with a frequency fluctuating in a fixed waveform. In this solution, ^
the frequency of the PWM signal fluctuates in a form of wave, and a fixed waveform in one pulse corresponds to "1" or "0" of binary code, so that complex information can be interpreted from this frequency, e.g. information of specification and manufacturer of the LED light-emitting assembly of the illuminating device, and information indicating a fault of the LED light-emitting assembly or LED driver of the illuminating device.
According to the present invention, the varying frequency is higher than 200Hz, preferably higher than 250Hz, higher than which, it absolutely can assure that human eyes will not de¬ tect flash of the LED light-emitting assembly.
The other object of the present invention is accomplished via an information sending and receiving apparatus through the following solution. The information sending and receiving apparatus comprises an receiver and the illuminating device above as an sender, wherein the receiver comprises a sensor unit, a decoding unit connected to the sensor unit and a user interface unit connected to the decoding unit, and wherein the sensor unit receives light from the illuminating device, the decoding unit decodes a frequency of light received and outputs a digital signal, and the user interface unit outputs information according to the digital signal. Information can be sent and received using such information sending and receiving apparatus without an extra circuit.
According to the present invention, the information is one selected from information of service duration of the LED light-emitting assembly, information of specification and manufacturer of the LED light-emitting assembly of the illu- minating device and information indicating a fault of the LED light-emitting assembly or LED driver of the illuminating de- vice .
Preferably, the receiver is configured to be portable, which is quite favorable for operation between different illuminat¬ ing devices and reduces a working load of an operator. Brief Description of the Drawings
The accompanying drawings constitute a part of the present Description and are used to provide further understanding of the present invention. Such accompanying drawings illustrate the embodiments of the present invention and are used to de- scribe the principles of the present invention together with the Description. In the accompanying drawings the same components are represented by the same reference numbers. As shown in the drawings :
Fig. 1 is a schematic diagram of an illuminating device ac- cording to the present invention; and
Fig. 2 is a schematic diagram of an information sending and receiving apparatus according to the present invention.
Detailed Description of the Embodiments
Fig. 1 is a schematic diagram of an illuminating device ac- cording to the present invention. As can be seen from Fig. 1, the illuminating device comprises an LED light-emitting assembly 1 and an LED driver 3 that connects the LED light- emitting assembly 1 to a power supply 2 and drives the LED light-emitting assembly 1. In addition, the LED driver 3 further comprises a PWM control unit 4. It further can be seen from Fig. 1 that the LED light-emitting assembly 1 and the LED drier 3 are arranged in a lamp shell 8, and a trans- parent lamp cover 9 is provided at one side of a light emer¬ gent opening of the LED light-emitting assembly 1.
In a practical operation, the PWM control unit 4 generates a PWM signal with a variable frequency, and the LED driver 3 drives the LED light-emitting assembly 1, according to the PWM signal, to emit light with a varying frequency.
In a preferred solution of the present utility module, the PWM control unit 4 adjusts a frequency of light emitted from the LED light-emitting assembly 1, for instance, when a fre- quency of light emitted from the LED light-emitting assembly 1 is 300Hz, it means that the LED light-emitting assembly 1 has just worked; the frequency shifts to 310Hz after modu¬ lated by the PWM control unit 4, it means that at this time the LED light-emitting assembly 1 has worked for one year; and after the frequency shifts to 400Hz, it means that the LED light-emitting assembly 1 has worked for ten years and has reached it service lifetime.
In another preferred embodiment of the present invention, the PWM control unit 4 generates the PWM signal with a frequency fluctuating in a fixed waveform. For example, the frequency of the PWM signal fluctuates in a form of wave, and a fixed waveform in one pulse corresponds to "1" or "0" of binary code, so that complex information can be interpreted from this frequency, e.g. information of specification and manu- facturer of the LED light-emitting assembly 1 of the illuminating device, and information indicating a fault of the LED light-emitting assembly 1 or LED driver 2 of the illuminating device ..
Fig. 2 is a schematic diagram of an information sending and receiving apparatus according to the present invention. As can be seen from Fig. 2, the information sending and receiving apparatus comprises the illuminating device above as an sender and a portable receiver. The receiver comprises a sensor unit 5, a decoding unit 6 connected to the sensor unit 5 and a user interface unit 7 connected to the decoding unit 6, wherein the sensor unit 5 receives light from the illumi¬ nating device, the decoding unit 6 decodes the frequency of light received and outputs a digital signal, and the user in¬ terface unit 7 outputs information according to the digital signal. The output information is one selected from, e.g. information of service duration of the LED light-emitting assembly 1 of the illuminating device, information of specifi¬ cation and manufacturer of the LED light-emitting assembly 1 of the illuminating device and information indicating a fault of the LED light-emitting assembly 1 or LED driver 2 of the illuminating device.
The above is merely preferred embodiments of the present in¬ vention but not to limit the present invention. For the per¬ son skilled in the art, the present invention may have vari- ous alterations and changes. Any alterations, equivalent sub¬ stitutions, improvements, within the spirit and principle of the present invention, should be covered in the protection scope of the present patent application.
^
List of reference signs
1 LED light-emitting assembly
2 power supply
3 LED driver
4 PWM control unit
5 sensor unit
6 decoding unit
7 user interface unit
8 lamp shell
9 lamp cover

Claims

Patent claims
1. An illuminating device comprising an LED light-emitting assembly (1) and an LED driver (3) that connects the LED light-emitting assembly (1) to a power supply (2) and drives the LED light-emitting assembly (1), wherein the LED driver (3) further comprises a PWM control unit (4) that generates PWM signal with a variable frequency, and the LED driver (3) drives the LED light-emitting assembly (1), according to the PWM signal, to emit light.
2. The illuminating device according to Claim 1, wherein the PWM control unit (4) generates the PWM signal with a fre quency shifting at a fixed frequency value.
3. The illuminating device according to Claim 1, wherein the PWM control unit (4) generates the PWM signal with a fre quency fluctuating in a fixed waveform.
4. The illuminating device according to any one of Claims 1-3, wherein the varying frequency is higher than 200Hz.
5. The illuminating device according to any one of Claims 1-3, wherein the varying frequency is higher than 250Hz.
6. An information sending and receiving apparatus, compris ing an receiver and the illuminating device according to any one of Claims 1-5 as an sender, wherein the receiver comprises a sensor unit (5), a decoding unit (6) connected to the sensor unit (5) and a user interface unit (7) connected to the decoding unit (6), and wherein the sensor unit (5) re¬ ceives light from the illuminating device, the decoding unit (6) decodes a frequency of the light received and outputs a digital signal, and the user interface unit (7) outputs in¬ formation according to the digital signal.
7. The information sending and receiving apparatus according to Claim 6, wherein the information is one selected from information of service duration of an LED light-emitting assembly (1) of the illuminating device, information of speci¬ fication and manufacturer of the LED light-emitting assembly
(1) of the illuminating device and information indicating a fault of the LED light-emitting assembly (1) or an LED driver
(3) of the illuminating device.
8. The information sending and receiving apparatus according to Claim 6 or 7, wherein the receiver is configured to be portable .
PCT/EP2012/067283 2011-09-13 2012-09-05 An illuminating device with data modulation transmission portable receiver for receiving transmitted data WO2013037681A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2011203425217U CN202282888U (en) 2011-09-13 2011-09-13 Illuminating device and information transmitting/receiving device employing same
CN201120342521.7 2011-09-13

Publications (1)

Publication Number Publication Date
WO2013037681A1 true WO2013037681A1 (en) 2013-03-21

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Application Number Title Priority Date Filing Date
PCT/EP2012/067283 WO2013037681A1 (en) 2011-09-13 2012-09-05 An illuminating device with data modulation transmission portable receiver for receiving transmitted data

Country Status (2)

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CN (1) CN202282888U (en)
WO (1) WO2013037681A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004109956A1 (en) * 2003-06-10 2004-12-16 Koninklijke Philips Electronics N.V. Led system for illumination and data transmission
US20050206529A1 (en) * 2003-01-23 2005-09-22 St-Germain Nicolas Intelligent light degradation sensing LED traffic signal
WO2010064175A1 (en) * 2008-12-04 2010-06-10 Koninklijke Philips Electronics N.V. Illumination device and method for embedding a data signal in a luminance output using ac driven light sources

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050206529A1 (en) * 2003-01-23 2005-09-22 St-Germain Nicolas Intelligent light degradation sensing LED traffic signal
WO2004109956A1 (en) * 2003-06-10 2004-12-16 Koninklijke Philips Electronics N.V. Led system for illumination and data transmission
WO2010064175A1 (en) * 2008-12-04 2010-06-10 Koninklijke Philips Electronics N.V. Illumination device and method for embedding a data signal in a luminance output using ac driven light sources

Also Published As

Publication number Publication date
CN202282888U (en) 2012-06-20

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