WO2021090533A1 - Dispositif sans fil et système d'éclairage comprenant celui-ci - Google Patents

Dispositif sans fil et système d'éclairage comprenant celui-ci Download PDF

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Publication number
WO2021090533A1
WO2021090533A1 PCT/JP2020/026598 JP2020026598W WO2021090533A1 WO 2021090533 A1 WO2021090533 A1 WO 2021090533A1 JP 2020026598 W JP2020026598 W JP 2020026598W WO 2021090533 A1 WO2021090533 A1 WO 2021090533A1
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WO
WIPO (PCT)
Prior art keywords
wireless
communication
wireless slave
wireless device
slave unit
Prior art date
Application number
PCT/JP2020/026598
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English (en)
Japanese (ja)
Inventor
圭以 亀田
Original Assignee
パナソニックＩｐマネジメント株式会社
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Publication of WO2021090533A1 publication Critical patent/WO2021090533A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
    • 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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

Definitions

  • This disclosure relates to a wireless device and a lighting system equipped with the wireless device.
  • Dimming control by wireless communication has advantages such as no need to install a dimming signal line.
  • Japanese Unexamined Patent Publication No. 2016-058197 Japanese Unexamined Patent Publication No. 2016-058323 Japanese Patent No. 6555433 Japanese Unexamined Patent Publication No. 2019-033032 Japanese Unexamined Patent Publication No. 2000-195681
  • group control can be performed for a plurality of wireless slave units by one-to-many communication.
  • the control signal broadcasted by each of the plurality of wireless slave units is not correctly received, and it is not possible to determine whether or not the communication is correctly performed on the wireless device side which is the master unit.
  • the reliability of control is low.
  • broadcast communication in order to improve the accuracy of communication, it is common to perform retransmission processing after a certain interval.
  • the retransmission process is not necessary, and unnecessary radio waves are transmitted by the retransmission process, which causes communication congestion in situations where there are few wireless communication channels. become. Therefore, it is desired to optimize the number of retransmissions in order to reduce communication congestion without lowering the reliability of communication.
  • One aspect of the present disclosure is a wireless device that controls a plurality of wireless slave units by broadcast communication, with respect to an antenna, a transmission / reception unit that communicates with the wireless slave unit using the antenna, and communication.
  • the transmission / reception unit includes a control unit that performs control, and the transmission / reception unit performs unicast communication with each of the plurality of wireless slave units as a communication target wireless slave unit in order, and the communication target wireless with respect to the unicast communication. If there is no reply from the slave unit, the wireless slave unit to be communicated is retransmitted in unicast communication, and the control unit performs broadcast communication to the plurality of wireless slave units according to the cumulative number of retransmissions. It is a wireless device that determines the number of times of retransmission.
  • the present disclosure it is possible to provide a wireless device in which the number of times of retransmission of a control signal in broadcast communication is optimized and a lighting system including the wireless device.
  • the lighting system 100 includes a wireless device 102, a wireless slave unit 104, and a light source 106.
  • the lighting system 100 controls lighting, extinguishing, dimming, etc. of the light source 106 by transmitting a control signal from the wireless device 102 to the wireless slave unit 104.
  • FIG. 1 shows a configuration in which four wireless slave units 104 are provided, the number of wireless slave units 104 is not limited.
  • the wireless device 102 includes antennas ANT1 and ANT2, a changeover switch 10, a wireless transmission / reception unit 12, and a control unit 14.
  • the wireless device 102 is used to transmit a control signal for controlling lighting in the lighting system 100 to the wireless slave unit 104.
  • Antennas ANT1 and ANT2 are used to transmit and receive high-frequency signals, respectively.
  • the changeover switch 10 is a switch for exclusively selecting the antenna ANT1 and the antenna ANT2 and connecting them to the transmission circuit and the reception circuit of the wireless transmission / reception unit 12. That is, when the antenna ANT1 is connected to the transmitting circuit, the antenna ANT2 is connected to the receiving circuit, and when the antenna ANT2 is connected to the transmitting circuit, the antenna ANT1 is connected to the receiving circuit.
  • the wireless transmission / reception unit 12 transmits / receives a high frequency signal using the antennas ANT1 and ANT2.
  • the wireless transmission / reception unit 12 includes circuits necessary for high-frequency transmission / reception such as a high-frequency amplifier, a mixer, a local oscillator, an intermediate frequency filter (IF filter), a modulation unit, and a demodulation unit.
  • the wireless transmission / reception unit 12 can adopt, for example, a superheterodyne system.
  • the control unit 14 controls the transmission / reception of signals in the wireless transmission / reception unit 12, and also controls switching between the antennas ANT1 and ANT2.
  • the wireless slave unit 104 receives a control signal from the wireless device 102 and controls lighting, extinguishing, dimming, etc. of the light source 106. Further, when the wireless slave unit 104 receives the confirmation signal (Request) transmitted from the wireless device 102 by the unicast communication in which the transmission destination is specified, the wireless slave unit 104 returns a response signal (Ack) to the wireless device 102 accordingly.
  • Request confirmation signal
  • Ack response signal
  • the plurality of wireless slave units 104 to be broadcast communication may be all the wireless slave units 104 included in the lighting system 100, or the wireless slave units 104 may be divided into a plurality of groups and included in any of the groups. It may be a slave unit 104.
  • an identifier may be assigned to each group and the identifier may be included in the control signal and transmitted so that it can be specified whether or not the wireless slave unit 104 is the target of control. .. Further, a different communication frequency may be assigned to each group so that the wireless device 102 and the wireless slave unit 104 can communicate with each other at the assigned communication frequency.
  • the light source 106 is dimmed and controlled to a brightness corresponding to the duty ratio of the PWM signal.
  • the light source 106 is subjected to predetermined dimming control according to the signal pattern of the digital control signal.
  • the control method of the light source 106 is not limited to these, and other control methods may be adopted.
  • the control signal is retransmitted from the wireless device 102 a plurality of times. This makes it possible to increase the possibility of receiving the control signal in the wireless device 102.
  • the number of retransmissions of broadcast communication is changed according to the communication state between the wireless device 102 and the wireless slave unit 104.
  • the number of retransmissions of broadcast communication may be set to a predetermined initial value.
  • the initial value may be, for example, the maximum number of retransmissions specified in the lighting system 100.
  • Each of the wireless slave units 104 included in the lighting system 100 when the light source 106 is not controlled that is, when the control signal for controlling the light source 106 is not transmitted from the wireless device 102 to the wireless slave unit 104.
  • Unicast communication is performed in order. This is for confirming whether or not the communication connection between each of the wireless slave units 104 and the wireless device 102 is normal.
  • one of the wireless slave units 104 (wireless slave unit 1) is selected from the wireless device 102 as a communication target, and a confirmation signal (Req:) is sent to the wireless slave unit 104 (wireless slave unit 1). Request) is sent. It is assumed that each of the wireless device 102 and the wireless slave unit 104 is set to enable unicast communication by identifying each of the wireless slave units 104 in advance by pairing processing or the like.
  • the wireless slave unit 104 (wireless slave unit 1) correctly receives the confirmation signal (Req)
  • the wireless slave unit 104 returns a response signal (Ack: Acknowledge) to the wireless device 102.
  • the wireless device 102 receives the response signal (Ack), it considers that the transmission is completed.
  • the wireless slave unit 104 (wireless slave unit 1) is completed, the next wireless slave unit 104 (wireless slave unit 2) is selected as the communication target, and the wireless slave unit 104 (wireless slave unit 2) is selected. Move to the confirmation process of communication with.
  • a confirmation signal (Req) is transmitted from the wireless device 102 to the wireless slave unit 104 (wireless slave unit 2). If the wireless slave unit 104 (wireless slave unit 2) cannot correctly receive the confirmation signal (Req), the response signal (Ack) from the wireless slave unit 104 (wireless slave unit 2) even after a predetermined time has elapsed from the time of transmission. Is not returned, so the wireless device 102 is considered to have timed out. At this time, the wireless device 102 retransmits the confirmation signal (Req) to the wireless slave unit 104 (wireless slave unit 2).
  • the confirmation signal (Req) to be retransmitted may be the same signal as the previous one, and may not include special information indicating that the signal is retransmitted.
  • the wireless device 102 repeats the retransmission process until a response signal (Ack) is received from the wireless slave unit 104 (wireless slave unit 2).
  • a response signal (Ack) is returned from the wireless slave unit 104 (wireless slave unit 2) in response to the nth retransmission
  • the control unit 14 stores the number of retransmissions (n in this case) in the built-in memory or the like and counts them. To do.
  • the antennas ANT1 and ANT2 of the wireless device 102 may be switched and transmitted. As a result, the influence of communication failure can be suppressed due to the influence of fading or the like from the wireless device 102 to the wireless slave unit 104.
  • two antennas ANT1 and ANT2 are provided, but three or more antennas may be provided and these may be switched and used.
  • the wireless slave unit 104 cannot receive the retransmission even if the retransmission is repeated over a predetermined reference number of times or a predetermined reference period and there is no reply of the response signal (Ack) from the wireless slave unit 104, error processing is performed as a communication error. You may do it. For example, it may be determined that the communication has been completely cut off, and a process such as notifying an external device such as a center controlling the wireless device 102 of a communication error may be performed.
  • the other wireless slave units 104 are also subjected to the process of confirming the communication status in order.
  • the communication connection using unicast communication is confirmed for all the wireless slave units 104 included in the lighting system 100, and the cumulative number of times the confirmation signal (Request) is retransmitted at that time is obtained.
  • the control unit 14 determines the number of times the broadcast communication is retransmitted according to the cumulative number of times the confirmation signal (Req) is retransmitted in the communication connection confirmation process using unicast communication. That is, the control unit 14 is set so that the number of retransmissions of broadcast communication increases as the cumulative number of times increases.
  • the number of retransmissions of broadcast communication may be associated with the built-in memory of the control unit 14 for each cumulative number and stored in advance, and the number of retransmissions may be set according to the actually counted cumulative number.
  • a function for calculating the number of retransmissions of broadcast communication with the cumulative number of times as an argument may be defined in advance, and the number of retransmissions may be set by substituting the actually counted cumulative number of times into the function. Good.
  • the method for setting the number of retransmissions of broadcast communication is not limited to these, and may be set according to the cumulative number of times.
  • the number of retransmissions for broadcast communication is set to 2.
  • the number of times the broadcast communication is retransmitted may be increased.
  • the number of retransmissions in broadcast communication when the cumulative number of retransmissions in unicast communication is the same may be changed according to the number of wireless slave units 104 included in the lighting system 100. For example, as the number of wireless slave units 104 included in the lighting system 100 increases, the number of retransmissions in broadcast communication when the cumulative number of retransmissions in unicast communication is the same may also increase.
  • the communication status confirmation process for the wireless slave unit 104 by unicast communication may be performed every time a certain time elapses, and the number of retransmissions in the broadcast communication may be updated according to the cumulative number of retransmissions at that time. ..
  • the cumulative number of retransmissions in unicast communication is the same as the number of times of communication by the control signal by broadcast communication increases from the time of system startup of the lighting system 100, or as the time elapses from the time of system startup.
  • the number of retransmissions in the broadcast communication of the above may be reduced.
  • the maximum number of retransmissions of broadcast communication may be set immediately after the system of the lighting system 100 is started, and the number of retransmissions may be reduced each time the control signal is communicated from the wireless device 102 to the wireless slave unit 104 by broadcast communication. ..
  • the number of retransmissions is set to 8 immediately after the system of the lighting system 100 is started, and the number of retransmissions is set to 7 times ⁇ 6 times ⁇ 5 times each time the control signal is communicated by broadcast communication, and so on.
  • the number of retransmissions may be gradually reduced according to the cumulative number of retransmissions.
  • the maximum value for the number of retransmissions of broadcast communication may be set immediately after the system of the lighting system 100 is started, and the number of retransmissions may be reduced every time a certain time elapses from the setting time.
  • the number of retransmissions is set to 8 immediately after the system of the lighting system 100 is started, and the number of retransmissions is set to 7 times ⁇ 6 times ⁇ 5 times ...
  • the number of retransmissions may be gradually reduced according to the above.
  • the cumulative number of times the confirmation signal (Req) is retransmitted to all the wireless slave units 104 included in the lighting system 100 is obtained, and the number of times the control signal is retransmitted in the control by broadcast communication according to the cumulative number of times.
  • the mode of setting is described.
  • the cumulative number of times the confirmation signal (Req) is retransmitted to the wireless slave unit 104 designated as one group in the lighting system 100 is obtained, and the broadcast communication is performed to the wireless slave unit 104 included in the group according to the cumulative number of times.
  • the number of times the control signal is retransmitted in the control may be set. In this case, the number of retransmissions of the control signal in the control by broadcast communication may be reset each time the group of the wireless slave unit 104 is changed.
  • the present embodiment it is possible to provide a wireless device in which the number of retransmissions of control signals in broadcast communication is optimized and a lighting system provided with the wireless device.
  • 10 changeover switch 12 wireless transmitter / receiver, 14 control unit, 100 lighting system, 102 wireless device, 104 wireless slave unit, 106 light source, ANT1, ANT2 antenna.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Selective Calling Equipment (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Dispositif sans fil (102) comprenant : une antenne (ANT1, ANT2) ; une partie de transmission et de réception sans fil (12) qui utilise l'antenne (ANT1, ANT2) pour communiquer avec une unité asservie sans fil (104) ; et une partie de commande (14) qui exécute une commande sur des communications, la partie de transmission et de réception sans fil (12) exécutant une communication de monodiffusion vers une pluralité des unités asservies sans fil (104) dans l'ordre, et s'il n'y a pas de réponse à ladite communication de monodiffusion à partir d'une unité asservie sans fil cible de communication (104), la partie de transmission et de réception sans fil (12) exécute une retransmission de la communication de monodiffusion vers ladite unité asservie sans fil cible de communication (104), et la partie de commande (14) détermine, en fonction du nombre de fois où ladite retransmission s'est produite, le nombre de fois où une communication de diffusion est retransmise à la pluralité d'unités asservies sans fil (104).
PCT/JP2020/026598 2019-11-05 2020-07-07 Dispositif sans fil et système d'éclairage comprenant celui-ci WO2021090533A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-200501 2019-11-05
JP2019200501A JP2021077929A (ja) 2019-11-05 2019-11-05 無線装置及びそれを備えた照明システム

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WO2021090533A1 true WO2021090533A1 (fr) 2021-05-14

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007201924A (ja) * 2006-01-27 2007-08-09 Kyocera Corp 制御装置、無線通信端末、通信制御方法
JP2015097348A (ja) * 2013-11-15 2015-05-21 富士通株式会社 通信方法、通信装置、通信プログラム、および、通信システム
JP2019033032A (ja) * 2017-08-09 2019-02-28 パナソニックＩｐマネジメント株式会社 照明システム、無線コントローラ、制御方法及びプログラム

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007201924A (ja) * 2006-01-27 2007-08-09 Kyocera Corp 制御装置、無線通信端末、通信制御方法
JP2015097348A (ja) * 2013-11-15 2015-05-21 富士通株式会社 通信方法、通信装置、通信プログラム、および、通信システム
JP2019033032A (ja) * 2017-08-09 2019-02-28 パナソニックＩｐマネジメント株式会社 照明システム、無線コントローラ、制御方法及びプログラム

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