JP4470812B2 - Lighting system - Google Patents

Description

  The present invention relates to a base lighting device that outputs visible light for illumination, a communication lighting device that outputs illumination visible light and visible light for communication, and a dimming signal for dimming control of the base lighting device and the communication lighting device. , A base luminaire that outputs visible light for illumination, a communication luminaire that outputs illumination visible light and visible light for communication, and a base luminaire and communication illumination The present invention relates to a lighting system including a controller that transmits a dimming / communication signal for dimming control of an appliance.

  Japanese Patent Application Laid-Open No. 2002-290335 is a lighting system including a communication lighting device that outputs illumination visible light and communication visible light, and a controller that transmits a dimming signal for dimming control of the communication lighting device. The technique described in the gazette (patent document 1) is known.

  It is equipped with a light emitting diode as a communication lighting fixture and a computer as a controller, and outputs visible light for communication by modulating the lighting frequency of the light emitting diode according to a communication signal from the computer. It is.

Such a lighting system is combined with a base luminaire that outputs visible light for illumination, that is, a base luminaire that outputs visible light for illumination, and a communication luminaire that outputs visible light for illumination and visible light for communication And a controller for transmitting a dimming signal for dimming control of the base lighting fixture and the communication lighting fixture, and providing a lighting environment capable of dimming control in one system, and for communication It is possible to transmit a communication signal by visible light, and it is expected to reduce the cost of the lighting system, construction, and inspection.
JP 2002-290335 A

  However, a base lighting device that outputs visible light for illumination, a communication lighting device that outputs illumination visible light and visible light for communication, and a dimming signal for dimming control of the base lighting device and the communication lighting device are transmitted. A lighting system including a controller, and the light intensity of visible light for illumination and visible light for communication is different between the base lighting fixture and the communication lighting fixture over the entire range of the dimming signal. Variations in brightness and darkness are caused by the arrangement with the communication lighting device, which adversely affects the lighting environment. On the other hand, if the light intensity of visible light for communication and visible light for communication is approximately the same between the base lighting fixture and the communication lighting fixture over the entire dimming signal, it is difficult to distinguish between the base lighting fixture and the communication lighting fixture. There is sex.

  In addition, as described above, when a light emitting diode is used as a communication lighting fixture, the lighting control frequency and the output of visible light for communication are modulated by modulating the lighting frequency. Although it functions as a signal for communication, in this case as well, the light intensity of the visible light for illumination and the visible light for communication is different between the base lighting device and the communication lighting device over the entire frequency range of the dimming signal. The arrangement of the base lighting device and the communication lighting device causes variations in brightness and darkness, which adversely affects the lighting environment. On the other hand, when the light intensity of visible light for illumination and visible light for communication is approximately the same between the base lighting device and the communication lighting device over the entire frequency range of the dimming signal, the base lighting device and the communication lighting device can be distinguished. May be difficult.

  The present invention has been made in view of the above-described background art, and its problem is that variations in brightness due to the arrangement of the base lighting fixture and the communication lighting fixture are unlikely to occur, suppressing adverse effects on the lighting environment, and for communication purposes. It is an object of the present invention to provide an optical transmission method using a lighting system that can easily distinguish between a base lighting fixture and a communication lighting fixture when the lighting fixture transmits a communication signal.

In order to solve the above problems, the invention described in claim 1 is a base lighting device that outputs visible light for illumination, a communication lighting device that outputs illumination visible light and visible light for communication, and base lighting. A controller that transmits a dimming signal for dimming control of the fixture and the communication lighting fixture, and the dimming signal has a light intensity of visible light for illumination with respect to the dimming signal between the base lighting fixture and the communication lighting fixture. a lighting zone is substantially the same, the light intensity of communication for visible light and the illumination visible light for dimming signal and a communication band is different between the communication luminaires based luminaires, possess, communication The illumination system is characterized in that the light intensity of the visible light for communication in the service band is larger than the light intensity of the visible light for illumination.

According to the first aspect of the present invention, the dimming signal includes an illumination band in which the light intensity of the visible light for illumination with respect to the dimming signal is substantially the same in the base lighting device and the communication lighting device, and the dimming signal. and a communication band light intensity are different between the communication luminaires based luminaires communications for visible light and the illumination visible light for signal, chromatic, and light intensity of communication for visible light in the communication band Because the light intensity of the visible light for illumination is larger than the light intensity of the illumination light for communication, when the communication lighting apparatus is used for illumination, the light intensity of the base lighting apparatus and the communication lighting apparatus can be reduced by controlling the dimming in the illumination band. Since it can be the same, it is difficult to adversely affect the lighting environment, and when using a communication lighting fixture for communication, the light intensity of the base lighting fixture and the communication lighting fixture is different by controlling the dimming in the communication band. Base lighting so you can Ingredients and Ri as easy distinction of the communication luminaire per, the light intensity of communication for visible light in the communication band is made larger than the light intensity of the illumination visible light, not require high sensitivity to the light receiving device Both can improve the light receiving performance.

  As a first embodiment of the present invention, an illumination system 1 corresponding to claims 1 and 2 of the present application will be described with reference to FIG.

  As shown in FIG. 1, the lighting system 1 of the first embodiment includes a base lighting device 2 that outputs visible light for illumination, a communication lighting device 3 that outputs illumination visible light and visible light for communication, and a base lighting device. A controller 4 that transmits a dimming signal for dimming control of the luminaire 2 and the communication luminaire 3, and the dimming signal communicates with the base luminaire 2 in terms of the light intensity of the visible light for illumination with respect to the dimming signal. The illumination band 5 that is substantially the same as the lighting fixture 3 and the light intensity of the visible lighting for communication and the visible light for communication with respect to the dimming signal are different between the base lighting fixture 2 and the communication lighting fixture 3. It has the use zone 6.

  Further, the light intensity of visible light for communication in the communication band 6 is greater than the light intensity of visible light for illumination.

  Hereinafter, the illumination system 1 according to the first embodiment will be described in more detail.

  First, the base lighting fixture 2 includes a dimming signal input unit 21, an A / D conversion unit 22, an oscillation cycle control unit 23, an oscillation circuit unit 24, and a fluorescent lamp 25. The

  The dimming signal input unit 21 receives a dimming signal from the controller 4 described later, and uses a general-purpose connector in the first embodiment. A receiver can be used when the controller 4 and the base lighting fixture 2 communicate wirelessly.

  The A / D converter 22 converts the dimming signal received by the dimming signal input unit 21 into an analog signal.

  The oscillation cycle control unit 23 uniquely determines the oscillation frequency based on the analog signal converted by the A / D conversion unit 22.

  The oscillation circuit 24 converts a DC power supplied from a power source (not shown) into a high frequency power based on the oscillation frequency determined by the oscillation cycle control unit 23 and supplies the fluorescent lamp 25. A general-purpose switching circuit is used. .

  Next, the communication lighting apparatus 3 includes a dimming signal input unit 21, an A / D conversion unit 22, an oscillation cycle control unit 23, an oscillation circuit unit 24, a fluorescent lamp 25, and an oscillation pattern. And a storage unit 31.

  This is the same as that used in the dimming signal input unit 21, the A / D conversion unit 22, the oscillation cycle control unit 23, the oscillation circuit unit 24, the fluorescent lamp 25, and the base lighting fixture 2.

  The oscillation pattern storage unit 31 stores the operating frequency of the oscillation circuit unit 24 when outputting visible communication light, and a communication signal is transmitted according to this operating frequency.

  Next, the controller 4 includes an operation unit 41, a power supply unit 42, a control unit 43, and an output unit 44.

  The operation unit 41 is used by the operator to input the degree of dimming for the base lighting device 2 and the communication lighting device 3, and a general-purpose lever switch is used.

  The power supply unit 42 supplies power to the dimming control unit 43, and a commercial power supply is used.

  The control unit 43 controls the dimming signal by an input from the operation unit, and can receive a trigger signal from an alarm device (not shown). When receiving the trigger signal, the control unit transmits a dimming signal corresponding to the communication band 6 described later to the output unit, and in other cases, the control unit corresponding to the lighting band 5 described later, Each is sent to the output.

  The output unit 44 outputs a dimming signal from the control unit to the base lighting device 2 and the communication lighting device 3, and uses a general-purpose connector. A transmitter can be used when the controller 4 and the base lighting fixture 2 communicate wirelessly.

  Next, the dimming signal is a PWM signal with a frequency of 1 kHz as shown in FIG. 2, and the on-duty width can be changed from 5% to 85%. As a result, the base lighting device 2 and the communication lighting device 3 can perform dimming control in the range of the on-duty width of 5% to 85%, and in the first embodiment, the light output is changed in the range of 10% to 100%. be able to. The band with an on-duty width of 5% to 85% capable of dimming control corresponds to the illumination band 5.

  On the other hand, when the on-duty width is 0% to 5% and 85% to 100%, the dimming control cannot be performed, and the band with the on-duty width of 85% to 100% is the communication in the first embodiment. This corresponds to the use band 6.

  Next, although it is the illumination system 1, in this 1st embodiment, the some base lighting fixture 2 and the communication lighting fixture 3 are connected with respect to the one controller 4 via the light control signal line. The base lighting device 2 and the communication lighting device 3 are mixed.

  The operation of the illumination system 1 according to the first embodiment will be described in more detail.

  First, as shown in FIG. 3A or 3B, when the trigger signal from the alarm is not received, the base is set according to the on-duty width of the dimming signal corresponding to the illumination band 5 from the controller 4. The lighting fixture 2 and the communication lighting fixture 3 are subject to dimming control.

  3A shows the case where the dimming signal is in the illumination band and the light output is high, and FIG. 3B shows the case where the dimming signal is in the illumination band and the light output is low. .

  Next, as shown in FIG. 3C, when the trigger signal is received from the alarm device, the base lighting fixture 2 is at the output lower limit according to the dimming signal corresponding to the communication band 6 from the controller 4. The light output is 10%. On the other hand, in the communication lighting device 3, the oscillation pattern storage unit 31 operates, the oscillation circuit unit 24 operates according to the operation frequency stored in advance, and the communication signal is transmitted. In this case, examples of the communication signal include a signal that transmits an evacuation route and position information. The above operation is represented by a time chart as shown in FIG.

  Therefore, according to the first embodiment, the dimming signal includes the illumination band 5 in which the light intensity of the visible light for illumination with respect to the dimming signal is substantially the same in the base lighting fixture 2 and the communication lighting fixture 3; Since it has the communication band 6 in which the light intensity of the visible light for illumination and the visible light for communication with respect to the dimming signal is different between the base lighting device 2 and the communication lighting device 3, the communication lighting device 2 is illuminated. In the case of use, the light intensity of the base lighting fixture 2 and the communication lighting fixture 3 can be made substantially the same by performing dimming control in the lighting band 5, so that the lighting environment is less likely to be adversely affected. When the fixture 3 is used for communication, the light intensity of the base lighting fixture 2 and the communication lighting fixture 3 can be made different by performing dimming control in the communication band 6. The instrument 3 can be easily distinguished.

  Further, the light intensity of the visible light for communication in the communication band 6 is larger than the light intensity of the visible light for illumination, so that the light receiving performance can be improved without requiring high sensitivity from the light receiver.

Then, the illumination system 1 of the reference form (henceforth "second embodiment" for convenience) of this invention is demonstrated.

  Since the illumination system 1 of the second embodiment is substantially the same as the configuration of the first embodiment, only different points will be described.

  As shown in FIG. 5, the difference is that the band with an on-duty width of 0% to 5% corresponds to the communication band 6 in the second embodiment.

  The operation of the illumination system 1 according to the second embodiment will be described in more detail.

  First, as shown in FIG. 6 (a) or (b), when the trigger signal from the alarm is not received, the base is set according to the on-duty width of the dimming signal corresponding to the illumination band 5 from the controller 4. The lighting fixture 2 and the communication lighting fixture 3 are subject to dimming control.

  6A shows the case where the dimming signal is in the illumination band and the light output is high, and FIG. 6B shows the case where the dimming signal is in the illumination band and the light output is low. Show.

  Next, as shown in FIG. 6C, when the trigger signal is received from the alarm device, the base lighting fixture 2 has an output upper limit according to the dimming signal corresponding to the communication band 6 from the controller 4. The light output is 100%. On the other hand, in the communication lighting device 3, the oscillation pattern storage unit 31 operates, the oscillation circuit unit 24 operates according to the operation frequency stored in advance, and the communication signal is transmitted. In this case, examples of the communication signal include a signal that transmits an evacuation route and position information. The above operation is represented by a time chart as shown in FIG.

  Therefore, according to the second embodiment, the dimming signal includes the illumination band 5 in which the light intensity of the visible light for illumination with respect to the dimming signal is substantially the same in the base lighting fixture 2 and the communication lighting fixture 3; Since it has the communication band 6 in which the light intensity of the visible light for illumination and the visible light for communication with respect to the dimming signal is different between the base lighting device 2 and the communication lighting device 3, the communication lighting device 2 is illuminated. In the case of use, the light intensity of the base lighting fixture 2 and the communication lighting fixture 3 can be made substantially the same by performing dimming control in the lighting band 5, so that the lighting environment is less likely to be adversely affected. When the fixture 3 is used for communication, the light intensity of the base lighting fixture 2 and the communication lighting fixture 3 can be made different by performing dimming control in the communication band 6. The instrument 3 can be easily distinguished.

  In addition, since the light intensity of the visible light for communication in the communication band is smaller than the light intensity of the visible light for illumination, communication can be performed while ensuring the user's field of view.

Next, a lighting system 1 of a reference form of the present invention (hereinafter referred to as “third embodiment” for convenience) will be described with reference to FIG.

  As shown in FIG. 8, the lighting system 1 of the third embodiment includes a base lighting device 2 that outputs visible light for illumination, a communication lighting device 3 that outputs visible light for illumination and visible light, and a base lighting device. And a controller 4 for transmitting a dimming / communication signal for dimming control of the luminaire 2 and the communication luminaire 3, wherein the dimming / communication signal is a signal of the visible light for illumination with respect to the dimming / communication signal. The lighting frequency range in which the light intensity is substantially the same in the base lighting fixture 2 and the communication lighting fixture 3, and the light intensity of the visible lighting light and the communication visible light with respect to the dimming signal are the base lighting fixture 2 and the communication lighting. It has the frequency for communication which is different with the instrument 3, It is characterized by the above-mentioned.

  Further, a higher frequency signal is superimposed on the dimming / communication signal in the communication frequency range.

  Hereinafter, the lighting system 1 according to the third embodiment will be described in more detail.

  First, the base lighting fixture 2 is a dimming / communication signal input unit 27, an A / D conversion unit 22, an oscillation cycle control unit 23, an oscillation circuit unit 24, a fluorescent lamp 25, It is comprised with the signal filter part 26 for light control and communication.

  The dimming / communication signal is the same as the dimming signal input unit 21 used in the first embodiment, and includes an A / D conversion unit 22, an oscillation cycle control unit 23, an oscillation circuit unit 24, and a fluorescent lamp. 25, which is the same as that used in the first embodiment.

  The dimming / communication signal filter unit 26 passes a dimming / communication signal having a predetermined frequency out of the dimming / communication signal from the controller 4 to be described later, and inputs the dimming / communication signal to the A / D conversion unit 22. In the third embodiment, a band-pass filter is used, and a dimming / communication signal having a frequency of 1 kHz is allowed to pass as described later, but a dimming / communication signal having a frequency of 120 Hz is allowed to pass. It is something that is not allowed.

  In the third embodiment, when the dimming / communication signal is not passed through the dimming / communication signal filter unit 26, the light output is 10% of the output lower limit value. Is set to

  Next, the communication lighting apparatus 3 includes a dimming / communication signal input unit 21, a current control unit 32, and a light emitting diode 33.

  The dimming / communication signal input unit 21 is the same as that used in the base lighting fixture 2.

  The current control unit 32 controls the supply current to the light emitting diode 33 in accordance with the dimming / communication signal, and supplies the current according to the dimming signal of any frequency of 1 kHz or 120 Hz.

  Next, the controller 4 includes an operation unit 41, a power supply unit 42, a control unit 43, and an output unit 44.

  The operation unit 41, the power supply unit 42, and the output unit 44 are the same as those in the first embodiment.

  The control unit 43 controls the dimming / communication signal based on an input from the operation unit, and can receive a trigger signal from an alarm device (not shown). When the trigger signal is received, the control unit transmits a dimming / communication signal corresponding to the communication frequency range described later to the output unit, and in other cases, the dimming corresponding to the illumination frequency range described later. The dual communication signal is transmitted to the output unit.

  Next, as a signal for dimming / communication, two types of signals having different frequencies are used.

  The first one is the same as that of the first embodiment, and is a PWM signal having a frequency of 1 kHz as shown in FIG. 2, and the on-duty width can be changed from 5% to 85%. As a result, the base lighting device 2 and the communication lighting device 3 can perform dimming control in the range of the on-duty width of 5% to 85%. In the third embodiment, the light output is changed in the range of 10% to 100%. be able to. In the third embodiment, this signal is a dimming / communication signal corresponding to the illumination frequency range.

  The second one corresponds to the dimming / communication signal of the lighting control device after receiving the trigger signal of the alarm device in FIG. 9 and is a signal having a frequency of 120 Hz, which is encoded in advance corresponding to the communication signal. It is a thing. Further, a high-frequency signal encoded with another communication signal is superimposed. In the third embodiment, this signal is a dimming / communication signal corresponding to the communication frequency range.

  And operation | movement by the illumination system 1 of this 3rd embodiment is demonstrated in more concrete detail.

  First, as shown in FIG. 9 (a) or (b), when the trigger signal from the alarm is not received, according to the on-duty width of the dimming signal of 1 kHz corresponding to the lighting frequency range from the controller 4. The base lighting device 2 and the communication lighting device 3 are subject to dimming control.

  Here, FIG. 9A shows the case where the dimming / communication signal is in the illumination frequency range and the light output is high, and FIG. 9B is the dimming / communication signal in the illumination frequency range. The cases where the light output is low are shown respectively.

  Next, as shown in FIG. 9C, when receiving a trigger signal from the alarm device, the controller 4 outputs a 120 Hz dimming / communication signal corresponding to the illumination frequency range. Therefore, in the base lighting fixture 2, the dimming / communication signal is not passed by the dimming signal filter unit 26, and the light output is set at a preset 10%. On the other hand, in the communication lighting device 3, the light emitting diode 33 is turned on according to the dimming / communication signal encoded corresponding to the communication signal, and the communication signal is transmitted. In this case, examples of the communication signal include a signal that transmits an evacuation route and position information. The above operation is represented by a time chart as shown in FIG.

  Therefore, according to the third embodiment, the dimming / communication signal has substantially the same light intensity of the illumination visible light with respect to the dimming / communication signal in the base lighting device 2 and the communication lighting device 3. A certain frequency range for illumination, and a frequency range for communication in which the light intensity of the visible light for illumination and the visible light for communication with respect to the dimming / communication signal is different between the base illumination device 2 and the communication illumination device 3, Therefore, when the communication lighting fixture 3 is used for lighting, the light intensity of the base lighting fixture 2 and the communication lighting fixture 3 can be made substantially the same by performing dimming control in the frequency range for lighting. When the communication lighting device 3 is used for communication, the light intensity of the base lighting device 2 and the communication lighting device 3 are different from each other by performing dimming control in the communication frequency range. Yes, for communication with the base lighting fixture 2 Distinction of luminaire 3 is easily attached.

  In addition, since a higher frequency signal is superimposed on the dimming / communication signal in the communication frequency range, a communication signal corresponding to the higher frequency signal can be transmitted and the high frequency signal is not superimposed. On the other hand, a larger amount of signals can be transmitted.

Block configuration diagram of the first embodiment of the present invention Relationship diagram between light control signal duty and light output used in the first embodiment of the present invention The operation | movement figure of the illumination system in 1st embodiment of this invention. (A) is the case where the dimming signal is in the illumination band and the light output is high, (b) is the case where the dimming signal is in the illumination band and the light output is low, and (c) is the dimming signal. The case of the communication band is shown respectively. The time chart before and after the visible light output for illumination and the visible light output for communication in 1st embodiment of this invention switch. Relationship diagram between light control signal duty and light output used in the first embodiment of the present invention The operation | movement figure of the illumination system in 2nd embodiment of this invention. (A) is the case where the dimming signal is in the illumination band and the light output is high, (b) is the case where the dimming signal is in the illumination band and the light output is low, and (c) is the dimming signal. The case of the communication band is shown respectively. The time chart before and after the visible light output for illumination and the visible light output for communication in 2nd embodiment of this invention switch. Block diagram of the third embodiment of the present invention The operation | movement figure of the illumination system in 3rd embodiment of this invention. (A) is the case where the dimming signal is in the illumination band and the light output is high, (b) is the case where the dimming signal is in the illumination band and the light output is low, and (c) is the dimming signal. The case of the communication band is shown respectively. The time chart before and after the visible light output for illumination and the visible light output for communication in 3rd embodiment of this invention switch.

Explanation of symbols

1 Lighting System 2 Base Lighting Equipment 3 Communication Lighting Equipment 4 Controller 5 Lighting Band 6 Communication Band

Claims (1)

A base lighting device that outputs visible light for illumination, a communication lighting device that outputs illumination visible light and visible light for communication, and a controller that transmits a dimming signal for dimming control of the base lighting device and the communication lighting device And the dimming signal includes an illumination band in which the light intensity of the visible light for illumination with respect to the dimming signal is substantially the same between the base lighting device and the communication lighting device, and visible light for illumination with respect to the dimming signal the light intensity of communication for visible light and is based luminaires and different in a communication band and communication luminaires, possess, light intensity of communication for visible light in the communication band, the light of the illumination visible light A lighting system characterized by greater than intensity .

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