JP5147603B2

JP5147603B2 - Load control system

Info

Publication number: JP5147603B2
Application number: JP2008216468A
Authority: JP
Inventors: 和久吉木; 真介植田
Original assignee: Panasonic Corp; Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Corp; Panasonic Holdings Corp
Priority date: 2008-08-26
Filing date: 2008-08-26
Publication date: 2013-02-20
Anticipated expiration: 2028-08-26
Also published as: JP2010055784A

Abstract

<P>PROBLEM TO BE SOLVED: To enable a load control system to easily and surely open and close a load even if fading occurs. <P>SOLUTION: The illumination control system is provided with a remote controller having three antennae with different planes of polarization of mutually radiating radio waves and capable of transmitting lighting signals by radio waves, and a switch capable of receiving lighting signals. When an operating button of the remote controller is pressed down, a radio transmission circuit part transmits lighting signals in a transmission mode using one of the antennae under control of the control part. The control part, in a series of continuous operation continued as an operation is carried out within a given time after the previous operation is carried out, changes transmission modes from the first transmission mode when an initial operation takes place, to second and third transmission modes when the second and the third operations take place. Since the transmission modes are automatically changed, communication is to be surely carried out even under environments with fading due to effects of polarized wave diversity. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、送信器から電波により送信した信号を受信器により受信し、当該信号に応じて負荷を制御する負荷制御システムに関する。 The present invention relates to a load control system that receives a signal transmitted by radio waves from a transmitter by a receiver and controls a load according to the signal.

近年、送信器から送信された無線信号を壁面などの造営面に配設されたスイッチにより受信して、スイッチが受信した信号に基づいて照明装置などの開閉動作を行うように構成された負荷制御システムが用いられている（例えば、特許文献１参照）。このような負荷制御システムにおいては、無線通信を利用することにより、例えば高機能なスイッチを、当該負荷制御システムの他の部分との間の配線作業等を行うことなく、既設のスイッチに替えて又は新規に、容易に配設することができる。このような無線通信を利用する負荷制御システムにおいて、用途によって、電波による無線通信により送信器とスイッチとの間で信号を送受信する方が、赤外光により送受信する場合よりも望ましい場合がある。これは、無線通信によれば、赤外光による場合よりも、電波の透過性や回折性等により、スイッチに信号を送信可能になる送信器のエリアが広くなる等のメリットがあるからである。しかしながら、このように電波による無線通信の場合でも、送信器とスイッチとの間で適正に通信を行うことができなくなる場合があり、その場合、例えばユーザが送信器を操作したとしてもユーザの意図したとおりに負荷が開閉されなくなる。 In recent years, a load control configured to receive a radio signal transmitted from a transmitter by a switch disposed on a construction surface such as a wall surface, and perform an opening / closing operation of a lighting device or the like based on the signal received by the switch. A system is used (see, for example, Patent Document 1). In such a load control system, by using wireless communication, for example, a highly functional switch can be replaced with an existing switch without performing wiring work with other parts of the load control system. Or it can newly arrange | position easily. In such a load control system using wireless communication, depending on the application, it may be more desirable to transmit and receive signals between the transmitter and the switch by wireless communication using radio waves than to transmit and receive by infrared light. This is because wireless communication has advantages such as a wider transmitter area that allows signals to be transmitted to the switch due to radio wave transmission and diffraction than with infrared light. . However, even in the case of wireless communication using radio waves as described above, communication may not be performed properly between the transmitter and the switch. In this case, for example, even if the user operates the transmitter, the user's intention As you can see, the load is no longer opened or closed.

このような問題は、例えば、フェージングの影響で発生することがある。すなわち、送信器とスイッチとの位置関係や周囲にある障害物等の位置形状等に応じて無線伝搬路で反射波が発生すること等によりフェージングが発生すると、スイッチに届く電波の強度が低くなり、送信器から送信された信号を受信しにくくなる。このような問題に対して、フェージングの発生に備え、予め複数のアンテナそれぞれから同じ信号を１回以上ずつ送信するようにして対策する方法が知られている。しかしながら、その場合、信号を送信する回数が多くなるため、電力の消費量が大きくなるという問題がある。
特開２００６−２５３０９２号公報 Such a problem may occur due to the influence of fading, for example. In other words, if fading occurs due to the occurrence of reflected waves in the radio propagation path according to the positional relationship between the transmitter and the switch, the position of obstacles, etc. around it, the intensity of the radio wave reaching the switch is reduced This makes it difficult to receive the signal transmitted from the transmitter. In order to prepare for the occurrence of fading, a method is known in which the same signal is transmitted from each of a plurality of antennas one or more times in advance in preparation for fading. However, in this case, there is a problem in that power consumption is increased because the number of signal transmissions increases.
JP 2006-253092 A

本発明は、上記問題点を鑑みてなされたものであり、フェージングが発生する環境下においても容易且つ確実に負荷を開閉させることが可能な、送信器の消費電力が小さい負荷制御システムを提供することを目的とする。 The present invention has been made in view of the above problems, and provides a load control system with low power consumption of a transmitter capable of easily and reliably opening and closing a load even in an environment where fading occurs. For the purpose.

上記目的を達成するため、請求項１の発明は、信号を電波により送信する送信器と、電波を受信する機能を有し、負荷に接続されて少なくとも当該負荷のオン・オフを制御する制御機能を備えた受信器とを有し、前記送信器は、アンテナ部と、前記アンテナ部から信号を送信する無線送信回路部と、ユーザにより操作される操作部と、前記操作部に加えられた操作に基づいて前記無線送信回路部を制御し、所定の信号を送信させる制御部とを備え、前記受信器は、アンテナ部と、前記アンテナ部を用いて電波を受信し信号を抽出する無線受信回路部と、電源から前記負荷への給電路を開閉する負荷制御回路部と、前記無線受信回路部で受信された信号に応じて前記負荷制御回路の動作制御を行う制御部とを備え、ユーザにより加えられた前記操作部の所定の操作に応じて前記負荷が動作するように構成された負荷制御システムにおいて、前記送信器のアンテナ部は、互いにアンテナ特性が異なる複数の送信モードで電波を放射可能に構成されており、前記無線送信回路部は、前記複数の送信モードを切り替えて信号を送信可能に構成されており、前記操作部の所定の操作が行われた後、所定時間内に再度前記所定の操作が行われる場合において、最初の所定の操作が行われたとき、前記複数の送信モードのうち所定の送信モードで同一の所定の信号を送信し、その後直前の操作から所定時間内に前記所定の操作が行われる度に、前記複数の送信モードのうち、少なくとも直前の操作に応じて信号を送信した送信モードとは異なる送信モードで前記所定の信号を送信するものである。 In order to achieve the above object, the invention of claim 1 has a transmitter for transmitting a signal by radio waves and a function for receiving radio waves, and is connected to a load to control at least on / off of the load. The transmitter includes an antenna unit, a radio transmission circuit unit that transmits a signal from the antenna unit, an operation unit operated by a user, and an operation applied to the operation unit A control unit that controls the radio transmission circuit unit based on the transmission and transmits a predetermined signal, and the receiver receives the radio wave using the antenna unit and extracts the signal by using the antenna unit. A load control circuit unit that opens and closes a power supply path from a power source to the load, and a control unit that performs operation control of the load control circuit in accordance with a signal received by the wireless reception circuit unit. Said added In the load control system configured to operate the load according to a predetermined operation of the cropping unit, the antenna unit of the transmitter is configured to be able to radiate radio waves in a plurality of transmission modes having mutually different antenna characteristics. The wireless transmission circuit unit is configured to be able to transmit signals by switching the plurality of transmission modes, and after the predetermined operation of the operation unit is performed, the predetermined operation is performed again within a predetermined time. When the first predetermined operation is performed, the same predetermined signal is transmitted in the predetermined transmission mode among the plurality of transmission modes, and then the predetermined operation is performed within a predetermined time from the immediately preceding operation. The predetermined signal is transmitted in a transmission mode different from the transmission mode in which a signal is transmitted in response to at least the previous operation among the plurality of transmission modes.

さらに、前記無線送信回路部は、前記操作部の所定の操作が行われた後、直前の操作から所定時間内に前記所定の操作が行われることが２回以上ある場合において、最初の所定の操作及び第２回目の操作が行われた後、さらに前記所定の操作が行われる度に、前記複数の送信モードのうち、直前の操作に応じて信号を送信した送信モードとは異なる送信モードと、その送信モードとは異なる送信モードであって既に信号送信を行った送信モードのうち少なくとも１つの送信モードとで続けて前記所定の信号を送信する。 Further, the wireless transmission circuit unit may perform the first predetermined operation when the predetermined operation is performed twice or more within a predetermined time from the previous operation after the predetermined operation of the operation unit is performed. After the operation and the second operation are performed, each time the predetermined operation is performed, a transmission mode different from the transmission mode in which a signal is transmitted according to the immediately preceding operation among the plurality of transmission modes. , that sends the predetermined signal continuously between the at least one transmission mode of the transmission modes performed already signaling a different transmission mode and the transmission mode.

請求項２の発明は、請求項１の発明において、前記無線送信回路部は、前記操作部の所定の操作が行われた後、直前の操作から所定時間内に前記所定の操作が行われることが２回以上ある場合において、最初の所定の操作及び第２回目の操作が行われた後、さらに前記所定の操作が行われたとき、当該操作に応じて信号送信を行う複数の送信モードを順に切替えながら、各送信モードについて複数回ずつ、前記所定の信号を送信するものである。 According to a second aspect of the present invention, in the first aspect of the invention, the wireless transmission circuit unit is configured to perform the predetermined operation within a predetermined time after the previous operation after the predetermined operation of the operation unit is performed. When the predetermined operation is performed after the first predetermined operation and the second operation are performed, a plurality of transmission modes in which signal transmission is performed according to the operation are performed. The predetermined signal is transmitted a plurality of times for each transmission mode while switching in order.

請求項５の発明は、請求項１又は請求項２の発明において、前記無線送信回路部は、直前の操作から所定時間後に前記操作部の所定の操作が行われたとき、前回に前記所定の信号の送信を行った送信モードで前記所定の信号の送信を行うものである。 According to a fifth aspect of the present invention, in the first or second aspect of the present invention, when the predetermined operation of the operation unit is performed after a predetermined time from the previous operation, the wireless transmission circuit unit The predetermined signal is transmitted in the transmission mode in which the signal is transmitted.

請求項４の発明は、請求項１乃至請求項３のいずれか一項の発明において、前記送信器のアンテナは、互いに偏波面が異なる複数のアンテナであり、前記無線受信回路部は、前記複数のアンテナのうち信号送信に用いるアンテナを切り替えることにより前記送信モードを切り替え可能に構成されているものである。 According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the antenna of the transmitter is a plurality of antennas having different polarization planes, and the radio reception circuit unit includes the plurality of antennas. Of these antennas, the transmission mode can be switched by switching the antenna used for signal transmission.

請求項５の発明は、請求項１乃至請求項３のいずれか一項の発明において、前記送信器のアンテナは、互いに取り付け位置が異なる複数のアンテナであり、前記無線受信回路部は、前記複数のアンテナのうち信号送信に用いるアンテナを切り替えることにより前記送信モードを切り替え可能に構成されているものである。 According to a fifth aspect of the present invention, in the invention according to any one of the first to third aspects, the antenna of the transmitter is a plurality of antennas whose mounting positions are different from each other, and the radio reception circuit unit is the plurality of the antennas. Of these antennas, the transmission mode can be switched by switching the antenna used for signal transmission.

請求項６の発明は、請求項１乃至請求項３のいずれか一項の発明において、前記送信器のアンテナは、互いに指向性が異なる複数のアンテナであり、前記無線受信回路部は、前記複数のアンテナのうち信号送信に用いるアンテナを切り替えることにより前記送信モードを切り替え可能に構成されているものである。 The invention of claim 6 is the invention according to any one of claims 1 to 3 , wherein the antenna of the transmitter is a plurality of antennas having different directivities, and the radio reception circuit unit is the plurality of antennas. Of these antennas, the transmission mode can be switched by switching the antenna used for signal transmission.

請求項１の発明によれば、例えばユーザにより行われた操作部の操作に応じて所定の信号の送信を行ったとき、フェージングの影響により通信が失敗しても、その後所定時間内に行われた操作に応じて送信するときには、前回送信時とはアンテナ特性が異なる送信モードで信号送信を行うので、通信が失敗する可能性を低くすることができる。例えば通信が失敗し負荷が開閉されなかったときのようにユーザが所定時間内に繰り返し操作部を操作する可能性の高い場合に、自動的にその操作に応じて送信モードを変更して信号送信を行うことができるので、手動により送信モードの設定を変更するなどの煩わしい作業は必要なく、容易且つ確実に負荷を開閉させることができる。また、操作部の操作があったときに常に複数の送信モードで信号送信を行うことがないので、常に複数の送信モードで信号送信を行うような従来の送信器と比較して、送信器の電力消費を小さく抑えることができる。 According to the first aspect of the present invention, for example, when a predetermined signal is transmitted in response to the operation of the operation unit performed by the user, even if communication fails due to the fading, it is performed within a predetermined time thereafter. When transmitting according to the operation performed, signal transmission is performed in a transmission mode having different antenna characteristics from the previous transmission, so that the possibility of communication failure can be reduced. For example, when there is a high possibility that the user repeatedly operates the operation unit within a predetermined time, such as when the communication fails and the load is not opened or closed, the transmission mode is automatically changed according to the operation and the signal is transmitted. Therefore, troublesome work such as manually changing the transmission mode setting is not required, and the load can be easily opened and closed. In addition, since the signal transmission is not always performed in a plurality of transmission modes when the operation unit is operated, the transmitter is compared with the conventional transmitter that always performs the signal transmission in the plurality of transmission modes. Power consumption can be kept small.

請求項２の発明によれば、繰り返し操作が行われる場合の第３回目以降の操作時に、既に信号送信を行った送信モードでも再度信号送信を行うので、特に一時的にフェージングが発生する場合等、当該操作の時点で既に信号送信を行った送信モードで良好に通信可能な状態になった場合、より速やかにその送信モードで通信を行うことができる。 According to the invention of claim 2, since signal transmission is performed again even in the transmission mode in which signal transmission has already been performed at the time of the third and subsequent operations when repeated operation is performed, especially when fading occurs temporarily, etc. When a state in which communication can be satisfactorily performed in the transmission mode in which signal transmission has already been performed at the time of the operation becomes possible, communication can be performed in the transmission mode more quickly.

請求項３の発明によれば、第３回目以降の操作時に、送信モードを順に切り替えながら、各送信モードについて複数回信号送信を行うことにより、それまでに周囲の環境においてフェージングの発生状況の変化があったとき等に、確実に且つ速やかに通信可能にすることができる。 According to the invention of claim 3, during the third and subsequent operations, by changing the transmission mode in order and performing signal transmission a plurality of times for each transmission mode, a change in the occurrence of fading in the surrounding environment until then In such a case, communication can be made reliably and promptly.

請求項４の発明によれば、最初の操作が行われたとき、最後に通信が成功したと考えられる、前回の信号送信を行った送信モードで信号送信を行うので、例えば初回の操作に応じて常に同じ送信モードで送信する場合と比較して、当該操作時に通信が失敗する可能性を低くすることができ、より確実に且つ速やかに通信可能にすることができる。 According to the invention of claim 4, when the first operation is performed, the signal transmission is performed in the transmission mode in which the last signal transmission is considered to have succeeded at the end. In comparison with the case of always transmitting in the same transmission mode, the possibility of communication failure during the operation can be reduced, and communication can be performed more reliably and promptly.

請求項５の発明によれば、繰り返しの操作が行われる度に、信号を、偏波面が異なる電波により送信することができるので、前回送信時にフェージングの影響により通信が失敗しても、偏波ダイバーシチの効果により電波の干渉状況を変えることができ、確実に通信可能にすることができる。 According to the invention of claim 5, since the signal can be transmitted by radio waves having different polarization planes every time the operation is repeated, even if communication fails due to fading at the previous transmission, the polarization Due to the diversity effect, the radio wave interference state can be changed, and communication can be reliably performed.

請求項６の発明によれば、繰り返しの操作が行われる度に、信号を、取り付け位置が異なるアンテナから電波により送信することができるので、前回送信時にフェージングの影響により通信が失敗しても、空間ダイバーシチの効果により電波の干渉状況を変えてフェージングが発生しないようにし、より確実に通信可能にすることができる。 According to the invention of claim 6, since the signal can be transmitted by radio waves from an antenna with a different mounting position every time a repeated operation is performed, even if communication fails due to fading at the time of previous transmission, Due to the effect of space diversity, it is possible to change the radio wave interference state so that fading does not occur, and to enable more reliable communication.

請求項７の発明によれば、繰り返しの操作が行われる度に、信号を、指向性が異なる電波により送信することができるので、前回送信時にフェージングの影響により通信が失敗しても、指向性ダイバーシチの効果により電波の干渉状況を変えることができ、確実に通信可能にすることができる。 According to the seventh aspect of the present invention, since the signal can be transmitted by radio waves having different directivities each time a repetitive operation is performed, the directivity can be improved even if communication fails due to fading during the previous transmission. Due to the diversity effect, the radio wave interference state can be changed, and communication can be reliably performed.

以下、本発明の第１実施形態について図面を参照して説明する。図１は、本実施形態に係る負荷制御システムの一例として、照明制御システムを示す。照明制御システム１は、照明装置１５０と、無線信号を電波により送信するリモートコントローラ（送信器）１５１と、例えば商用交流電源である電源（図２に示す）５０と照明装置１５０に電線を介して直列接続されたスイッチ（受信器）１５２等で構成されている。リモートコントローラ１５１には、ユーザにより操作可能な操作ボタン（操作部）１５１ａ等が設けられている。また、スイッチ１５２は、後述するようにリモートコントローラ１５１から送信され受信した無線信号に応じて照明装置１５０を点灯又は消灯させる。すなわち、この照明制御システム１は、リモートコントローラ１５１からスイッチ１５２への単方向通信方式を採用している。ここで、本実施形態においては、負荷として、白熱灯からなる照明装置１５０を例示するが、これに限定する主旨ではなく、蛍光灯及び蛍光灯電子安定器などの他の照明装置の他、照明装置以外の負荷であってもよい。また、スイッチ１５２は、例えば外部からユーザが操作可能な操作ハンドルを有しており、ユーザが、リモートコントローラ１５１の操作ボタン１５１ａの操作の他、この操作ハンドルを直接に操作することにより、照明装置１５０を点灯又は消灯させることができるように構成されていてもよい。 Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a lighting control system as an example of a load control system according to the present embodiment. The illumination control system 1 includes an illumination device 150, a remote controller (transmitter) 151 that transmits a radio signal by radio waves, a power source (shown in FIG. 2) 50 that is, for example, a commercial AC power source, and the illumination device 150 via electric wires. It is composed of a switch (receiver) 152 and the like connected in series. The remote controller 151 is provided with an operation button (operation unit) 151a that can be operated by the user. In addition, the switch 152 turns on or off the lighting device 150 in accordance with a wireless signal transmitted and received from the remote controller 151 as will be described later. That is, the illumination control system 1 employs a unidirectional communication method from the remote controller 151 to the switch 152. Here, in the present embodiment, the illumination device 150 made of an incandescent lamp is exemplified as the load. However, the present invention is not limited to this, and other illumination devices such as a fluorescent lamp and a fluorescent lamp electronic ballast, as well as illumination. It may be a load other than the device. The switch 152 has an operation handle that can be operated by the user from the outside, for example, and the user can directly operate the operation handle in addition to the operation of the operation button 151a of the remote controller 151, so that the illumination device can be operated. It may be configured such that 150 can be turned on or off.

図２は、リモートコントローラ１５１及びスイッチ１５２のブロック構成を示す。リモートコントローラ１５１は、操作ボタン１５１ａのほか、後述するように例えば３つのアンテナ１１ａ，１１ｂ，１１ｃを有するアンテナ部１１と、アンテナ部１１から信号を送信する無線送信回路部１２と、リモートコントローラ１５１の動作を制御する制御部１３と、それらの電気回路に電力を供給する電池１４等を備えている。リモートコントローラ１５１は、例えば、各部が筐体内に収納された箱体状に構成されている。ユーザは、リモートコントローラ１５１を把持したまま操作ボタン１５１ａの操作等を行うことができる。 FIG. 2 shows a block configuration of the remote controller 151 and the switch 152. In addition to the operation button 151a, the remote controller 151 includes, for example, an antenna unit 11 having three antennas 11a, 11b, and 11c, a wireless transmission circuit unit 12 that transmits a signal from the antenna unit 11, and a remote controller 151 A control unit 13 for controlling the operation, a battery 14 for supplying electric power to these electric circuits, and the like are provided. The remote controller 151 is configured, for example, in a box shape in which each unit is housed in a housing. The user can operate the operation button 151 a while holding the remote controller 151.

操作ボタン１５１ａは、例えば、照明装置１５０の点灯状態／消灯状態を切り替える操作を行うことができるように設けられている押ボタンである。操作ボタン１５１ａは、ユーザにより操作されると、操作信号を制御部１３に送出する。制御部１３は、マイクロコンピュータ等で構成されており、無線送信回路部１２等の制御を行う。制御部１３は、操作信号が入力されたときに、その操作信号に応じて、照明装置１５０の点灯／消灯を切り替えるための点灯信号を生成する。無線送信回路部１２は、点灯信号等が制御部１３から入力されると、その点灯信号等を変調及び増幅し、アンテナ部１１から所定の周波数の無線チャンネル（以下、チャンネルと称する）の搬送波に重畳して送信する。このように、リモートコントローラ１５１は、操作ボタン１５１ａに加えられた押下操作に基づいて、点灯信号を電波により送信する。なお、リモートコントローラ１５１には、操作ボタン１５１ａの他、さらに別の操作ボタン等が設けられており、制御部１３が、操作が加えられた操作ボタンに応じて照明装置１５０を制御するための制御信号等を生成するように構成されていてもよい。このように構成することにより、ユーザが、照明装置１５０の動作をさらに多様に遠隔操作することができる。 The operation button 151a is, for example, a push button provided so that an operation for switching the lighting state / extinguishing state of the lighting device 150 can be performed. The operation button 151 a sends an operation signal to the control unit 13 when operated by the user. The control unit 13 is configured by a microcomputer or the like, and controls the wireless transmission circuit unit 12 and the like. When the operation signal is input, the control unit 13 generates a lighting signal for switching on / off of the lighting device 150 according to the operation signal. When a lighting signal or the like is input from the control unit 13, the wireless transmission circuit unit 12 modulates and amplifies the lighting signal or the like, and transmits the signal from the antenna unit 11 to a carrier wave of a wireless channel (hereinafter referred to as a channel) having a predetermined frequency. Superimpose and send. As described above, the remote controller 151 transmits a lighting signal by radio waves based on the pressing operation applied to the operation button 151a. The remote controller 151 is provided with other operation buttons in addition to the operation buttons 151a, and the control unit 13 controls the lighting device 150 in accordance with the operation buttons to which the operation has been applied. It may be configured to generate a signal or the like. With this configuration, the user can remotely control the operation of the lighting device 150 in a variety of ways.

スイッチ１５２は、例えばループアンテナ等のアンテナ２１と、アンテナ２１により電波を受信する無線受信回路部２２と、スイッチ１５２の動作を制御する制御部２３と、照明装置１５０に接続され照明装置１５０への給電路を開閉する負荷制御回路部２４と、例えば１００Ｖの電源５０から照明装置１５０に電力を供給する電源回路２５等を備えている。スイッチ１５２は、例えば、合成樹脂製の矩形箱状の器体を有するワイドハンドル形連用スイッチ（ＪＩＳＣ８３０４参照）の２個モジュール寸法に形成されており、規格に準拠した取付枠等に取り付けられて、壁面内に埋め込まれているスイッチボックス内に収められ、配設される。なお、スイッチ１５２は、上記のようにして壁面内に埋め込まれるものに限られず、例えば壁面や天井等に取り付けられるものであってもよい。 The switch 152 is connected to the lighting device 150 connected to the lighting device 150, for example, the antenna 21 such as a loop antenna, the wireless reception circuit unit 22 that receives radio waves by the antenna 21, the control unit 23 that controls the operation of the switch 152. A load control circuit unit 24 that opens and closes the power supply path and a power supply circuit 25 that supplies power to the lighting device 150 from a power supply 50 of 100 V, for example, are provided. The switch 152 is formed in a two-module size of a wide handle type continuous switch (see JIS C 8304) having, for example, a rectangular box-shaped body made of synthetic resin, and is attached to a mounting frame or the like conforming to the standard. And placed in a switch box embedded in the wall surface. Note that the switch 152 is not limited to the one embedded in the wall surface as described above, and may be attached to, for example, a wall surface or a ceiling.

無線受信回路部２２は、制御部２３の制御の下、所定の周波数のチャンネルの電波を受信する。負荷制御回路部２４は、電源回路２５から照明装置１５０への給電路を開閉するスイッチング素子（例えば、トライアックなど）を有する。制御部２３は、マイクロコンピュータ等で構成されており、無線受信回路部２２で受信された信号に応じて、負荷制御回路部２４のスイッチング素子のスイッチング制御等を行う。制御部２３は、例えば、無線受信回路部２２で点灯信号が受信されたときには、照明装置１５０に給電する状態と給電しない状態とを切り替えるスイッチング制御を行う。電源回路２５は、制御部２３等に動作電源を供給する。なお、スイッチ１５２において、負荷制御回路部２４が照明装置１５０への給電路を開成しているときには、電源回路２５は、コンデンサに充電してスイッチ１５２の動作電源を生成する。他方、負荷制御回路部２４が電源回路２５から照明装置１５０への給電路を閉成しているときには、照明装置１５０の点灯状態に影響を及ぼさない範囲で定期的に給電路を所定の時間だけ開成してコンデンサに充電して、所定の時間外の閉成時にはコンデンサから放電して動作電源を生成する。これにより、スイッチ１５２は、電源回路２５と照明装置１５０とを２線で直列接続することが可能となっている。なお、この種の電源回路２５は従来から公知（例えば、特開２０００−３５７４４３号公報等を参照）であるから、詳細な構成及び動作についての図示並びに説明は省略する。また、電源回路２５の構成はこれに限られず、電源５０からスイッチ１５２に常時給電するようにしてもよい。 The radio reception circuit unit 22 receives radio waves of a channel having a predetermined frequency under the control of the control unit 23. The load control circuit unit 24 includes a switching element (for example, a triac) that opens and closes a power supply path from the power supply circuit 25 to the lighting device 150. The control unit 23 is configured by a microcomputer or the like, and performs switching control of the switching element of the load control circuit unit 24 in accordance with the signal received by the wireless reception circuit unit 22. For example, when the lighting signal is received by the wireless reception circuit unit 22, the control unit 23 performs switching control for switching between a state where power is supplied to the lighting device 150 and a state where power is not supplied. The power supply circuit 25 supplies operating power to the control unit 23 and the like. In the switch 152, when the load control circuit unit 24 opens a power supply path to the lighting device 150, the power supply circuit 25 charges the capacitor to generate an operating power supply for the switch 152. On the other hand, when the load control circuit unit 24 closes the power supply path from the power supply circuit 25 to the lighting device 150, the power supply path is periodically set for a predetermined time within a range that does not affect the lighting state of the lighting device 150. The capacitor is opened and charged to the capacitor, and when closed outside a predetermined time, the capacitor is discharged to generate an operating power supply. Thereby, the switch 152 can connect the power supply circuit 25 and the illumination device 150 in series by two lines. Since this type of power supply circuit 25 is conventionally known (see, for example, Japanese Patent Application Laid-Open No. 2000-357443, etc.), illustration and description of a detailed configuration and operation are omitted. The configuration of the power supply circuit 25 is not limited to this, and power may be constantly supplied from the power supply 50 to the switch 152.

照明制御システム１では、リモートコントローラ１５１の操作ボタン１５１ａの押下操作がなされると、スイッチ１５２の制御部２３が、当該操作に応じて、照明装置１５０への電力供給をオン／オフする。すなわち、ユーザにより操作ボタン１５１ａが押操作されてリモートコントローラ１５１から点灯信号が送出される度に、スイッチ１５２の制御部２３の制御により負荷制御回路部２４のスイッチング素子のスイッチングが行われ、照明装置１５０の点灯と消灯が切り替えられる。これにより、ユーザが、スイッチ１５２から離れた位置から、照明装置１５０の点灯状態と消灯状態とを切り替えることができる。 In the lighting control system 1, when the operation button 151a of the remote controller 151 is pressed, the control unit 23 of the switch 152 turns on / off the power supply to the lighting device 150 according to the operation. That is, each time the operation button 151a is pressed by the user and a lighting signal is transmitted from the remote controller 151, the switching element of the load control circuit unit 24 is switched by the control of the control unit 23 of the switch 152, and the lighting device 150 is switched on and off. Thereby, the user can switch the lighting device 150 between the lighting state and the extinguishing state from a position away from the switch 152.

ここで、リモートコントローラ１５１のアンテナ部１１を構成する３つのアンテナ１１ａ，１１ｂ，１１ｃは、それぞれ、互いに異なる偏波面を有し、アンテナ特性が異なるものである。例えば、第１アンテナ１１ａは、垂直偏波で電波を放射するアンテナ特性を有し、第２アンテナ１１ｂは、水平偏波で電波を放射するアンテナ特性を有している。また、第３アンテナ１１ｃは、垂直偏波でも水平偏波でもない、斜め偏波で電波を放出するアンテナ特性を有している。すなわち、アンテナ部は、これらの第１アンテナ１１ａ乃至第３アンテナ１１ｃにより、アンテナ特性が互いに異なる複数の送信モードで電波を放射可能に構成されている。第１アンテナ１１ａ乃至第３アンテナ１１ｃは、それぞれ、例えば、小型のダイポールアンテナである。なお、第１アンテナ１１ａ乃至第３アンテナ１１ｃの形式や放出する電波の偏波の特性はこれに限られるものではなく、例えばループアンテナ等であってもよく、また、円偏波等で電波を放出するように構成されているものであってもよい。 Here, the three antennas 11a, 11b, and 11c constituting the antenna unit 11 of the remote controller 151 have different polarization planes and have different antenna characteristics. For example, the first antenna 11a has antenna characteristics that radiate radio waves with vertical polarization, and the second antenna 11b has antenna characteristics that radiate radio waves with horizontal polarization. The third antenna 11c has an antenna characteristic that emits radio waves with oblique polarization, which is neither vertical polarization nor horizontal polarization. That is, the antenna unit is configured to be able to radiate radio waves in a plurality of transmission modes having different antenna characteristics by the first antenna 11a to the third antenna 11c. Each of the first antenna 11a to the third antenna 11c is, for example, a small dipole antenna. Note that the types of the first antenna 11a to the third antenna 11c and the polarization characteristics of the emitted radio wave are not limited to this. For example, a loop antenna or the like may be used. It may be configured to release.

本実施形態において、無線送信回路部１２は、このような３つの第１アンテナ１１ａ乃至第３アンテナ１１ｃを切り替えて信号を電波により送信可能に構成されている。換言すると、無線送信回路部１２は、アンテナ特性が互いに異なる第１アンテナ１１ａ乃至第３アンテナ１１ｃから１つを選択して、それぞれ、第１送信モード乃至第３送信モードの、偏波面が互いに異なる３つの送信モードを切り替えて信号を送信可能である。無線送信回路部１２は、例えば、制御部１３の制御に基づいて、信号を送信する際に用いる第１アンテナ１１ａ乃至第３アンテナ１１ｃの選択すなわち送信モードの変更を、以下に示すような所定の操作態様で操作ボタン１５１ａが操作されたときに行うように構成されている。この送信モード変更動作は、例えば、操作ボタン１５１ａの押下操作が行われた後、所定時間内（例えば、１秒以内）に再度操作ボタン１５１ａの押下操作が行われる場合に、その操作ボタン１５１ａの各押下操作に応じて行われる。すなわち、本実施形態において、直前の操作ボタン１５１ａの押下操作が行われた後、所定時間内に再度操作ボタン１５１ａの操作が行われた場合に、各操作により、いわば一連の連続操作が構成されることになり、送信モード変更動作は、この連続操作を構成する操作ボタン１５１ａの各押下操作に応じて行われる。なお、一連の連続操作は、最後の操作から所定時間が経過するまでに操作が行われなかったときには終了する。従って、連続操作が継続していない場合すなわち前回操作ボタン１５１ａが押下操作されてから所定時間が経過している場合に、操作ボタン１５１ａの操作が１回なされた場合、この操作は新たな連続操作の初回の操作となるが、その後所定時間に操作が行われない場合、当該連続操作は結局構成されないこととなる。 In the present embodiment, the wireless transmission circuit unit 12 is configured to be able to transmit signals by radio waves by switching the three first antennas 11a to 11c. In other words, the radio transmission circuit unit 12 selects one of the first antenna 11a to the third antenna 11c having different antenna characteristics, and the polarization planes of the first transmission mode to the third transmission mode are different from each other. A signal can be transmitted by switching between three transmission modes. The wireless transmission circuit unit 12 selects, for example, the first antenna 11a to the third antenna 11c used when transmitting a signal, that is, changes in the transmission mode, based on the control of the control unit 13, for example, as shown below. It is configured to be performed when the operation button 151a is operated in the operation mode. For example, when the operation button 151a is pressed again within a predetermined time (for example, within one second) after the operation button 151a is pressed, the transmission mode changing operation is performed. It is performed according to each pressing operation. That is, in the present embodiment, when the operation button 151a is operated again within a predetermined time after the previous operation button 151a is pressed, each operation forms a series of continuous operations. Thus, the transmission mode changing operation is performed in response to each pressing operation of the operation button 151a constituting the continuous operation. Note that the series of continuous operations ends when no operation is performed before the predetermined time elapses from the last operation. Accordingly, if the operation button 151a is operated once when the continuous operation is not continued, that is, when a predetermined time has elapsed since the previous operation button 151a was pressed, this operation is a new continuous operation. However, if the operation is not performed after a predetermined time, the continuous operation is not configured after all.

以下に、本実施形態における送信モードの変更動作の動作態様について説明する。図３は、送信モードの変更動作の動作態様の一例を示す。図に示す動作例は、ある時刻から操作ボタン１５１ａが５回ほど押下操作された（図に＃１乃至＃５として示す）場合のものである。この動作例において、最初に操作ボタン１５１ａの押下操作（＃１）があってから所定時間内に２回目の操作（＃２）がなされ、２回目の操作から所定時間内に３回目の操作（＃３）がなされている。また、３回目の操作から所定時間内を過ぎてから４回目の操作（＃４）がなされた後、所定時間内に５回目の操作（＃５）がなされている。このとき、最初の操作すなわち初回の操作から３回目までの操作は、一連の連続操作を構成し、４回目と５回目の操作は、その連続操作とは異なる連続操作を構成する。この５回の操作ボタン１５１ａの押下操作のうち、初回から３回目までの操作は、例えば、照明装置１５０を点灯させるための同一の点灯操作であり、４回目と５回目の操作は、例えば、照明装置１５０を消灯させるための同一の消灯操作である。 Hereinafter, an operation mode of the transmission mode changing operation in the present embodiment will be described. FIG. 3 shows an example of the operation mode of the transmission mode changing operation. The operation example shown in the figure is a case where the operation button 151a is pressed down about five times from a certain time (indicated as # 1 to # 5 in the figure). In this operation example, the second operation (# 2) is performed within a predetermined time after the first press of the operation button 151a (# 1), and the third operation (# 2) within a predetermined time from the second operation (# 2). # 3) has been made. Further, after a predetermined time has elapsed since the third operation, the fourth operation (# 4) is performed, and then the fifth operation (# 5) is performed within the predetermined time. At this time, the first operation, that is, the operation from the first operation to the third operation constitutes a series of continuous operations, and the fourth and fifth operations constitute a continuous operation different from the continuous operation. Of the five pressing operations of the operation button 151a, the first to third operations are, for example, the same lighting operation for lighting the lighting device 150, and the fourth and fifth operations are, for example, This is the same turn-off operation for turning off the lighting device 150.

制御部１３は、同一の連続操作において、操作ボタン１５１ａの押下操作が行われる度に３つのアンテナ１１ａ，１１ｂ，１１ｃを順に切り替えることにより、送信モードを切り替えて信号を送信する。すなわち、まず、初回の操作（＃１）が行われたとき、図に示すように、制御部１３は、点灯信号を生成すると共に信号を送信するアンテナを例えば第１アンテナ（ＡＮＴ１）１１ａとし、無線送信回路部１２は、第１アンテナ１１ａを用いた第１送信モードで信号送信を行う。その後、照明装置１５０が点灯しなかったこと等により初回の操作から所定時間内に操作が行われた場合、すなわち当該連続操作において２回目の操作（＃２）が行われると、制御部１３は、直前の操作に応じて信号を送信した第１アンテナ１１ａとは異なる第２アンテナ（ＡＮＴ２）１１ｂで送信するように送信モードを切り替え、無線送信回路部１２は第２アンテナ１１ｂに切り替えて第２送信モードで信号送信を行う。さらに、２回目の操作から所定時間内に操作が行われた場合、すなわち当該連続操作において３回目の操作（＃３）が行われると、同様に、直前の操作に応じて信号を送信した第２アンテナ１１ｂとは異なる第３アンテナ（ＡＮＴ３）１１ｃを用いた第３送信モードで信号送信が行われる。なお、この例では１つの連続操作として３回の押下操作を含むが、例えば４回以上の操作が含まれるときには、制御部１３は、３回目の操作に対応する第３アンテナ１１ｃから、操作がなされる度に、第１アンテナ１１ａ、第２アンテナ１１ｂ、第３アンテナ１１ｃ、…等と順に信号送信するアンテナを変更させ、送信モードを変更させる。 In the same continuous operation, the control unit 13 switches the three antennas 11a, 11b, and 11c in order every time the operation button 151a is pressed, and transmits a signal by switching the transmission mode. That is, first, when the first operation (# 1) is performed, as shown in the figure, the control unit 13 generates a lighting signal and transmits the signal to the first antenna (ANT1) 11a, for example, The wireless transmission circuit unit 12 performs signal transmission in the first transmission mode using the first antenna 11a. Thereafter, when the operation is performed within a predetermined time from the first operation because the lighting device 150 is not turned on, that is, when the second operation (# 2) is performed in the continuous operation, the control unit 13 The transmission mode is switched so that the second antenna (ANT2) 11b, which is different from the first antenna 11a that transmitted the signal according to the previous operation, is transmitted, and the wireless transmission circuit unit 12 is switched to the second antenna 11b and the second Signal transmission is performed in transmission mode. Further, when the operation is performed within a predetermined time from the second operation, that is, when the third operation (# 3) is performed in the continuous operation, similarly, a signal is transmitted according to the immediately preceding operation. Signal transmission is performed in a third transmission mode using a third antenna (ANT3) 11c different from the two antenna 11b. In this example, one continuous operation includes three pressing operations. However, for example, when four or more operations are included, the control unit 13 performs an operation from the third antenna 11c corresponding to the third operation. Each time it is done, the antenna for signal transmission is changed in order of the first antenna 11a, the second antenna 11b, the third antenna 11c,.

また、制御部１３は、この例において４回目の操作（＃４）のように新たに連続操作が始まるときには、当該操作はその連続操作において初回の押下操作であるので、例えば第１アンテナ１１ａを用いた第１送信モードで信号送信を行う。そして、その同一の連続操作を構成するように、所定時間内に５回目の操作（＃５）すなわち当該連続操作において２回目の操作が行われたときには、第２アンテナ１１ｂでの信号送信が行われる。 Further, in this example, when the continuous operation is newly started as in the fourth operation (# 4) in this example, since the operation is the first pressing operation in the continuous operation, for example, the first antenna 11a is set. Signal transmission is performed in the used first transmission mode. When the fifth operation (# 5), that is, the second operation in the continuous operation is performed within a predetermined time so as to constitute the same continuous operation, signal transmission is performed by the second antenna 11b. Is called.

このように、本実施形態においては、一連の連続操作において、押下操作がある度に、３つのアンテナ１１ａ，１１ｂ，１１ｃを切り替えて送信モードを変更し、前回信号を送信した送信モードとは異なる送信モードで順に信号送信を行う。そのため、前回送信時にフェージング等の影響により通信が失敗しても、その後の操作に応じて送信するときには、前回送信時とはアンテナ特性が異なる送信モードで信号送信を行うので、偏波ダイバーシチの効果により、通信が失敗する可能性を低くすることができ、且つ、常に３つのアンテナ１１ａ，１１ｂ，１１ｃで信号送信を行うようなリモートコントローラと比較して、電力消費を小さく抑えることができる。また、例えば通信が失敗し照明装置１５０が点灯／消灯しなかったときのようにユーザが所定時間内に繰り返し操作ボタン１５１ａを操作する可能性の高い場合に、自動的にその操作に応じて送信モードを変更して信号送信を行うことができるので、手動により送信モードの設定を変更するなどの煩わしい作業は必要なく、容易且つ確実に照明装置１５０を点灯／消灯させることができる。 As described above, in the present embodiment, the transmission mode is changed by switching the three antennas 11a, 11b, and 11c every time there is a pressing operation in a series of continuous operations, which is different from the transmission mode in which the previous signal is transmitted. Signal transmission is performed sequentially in the transmission mode. Therefore, even if communication fails due to fading, etc. during the previous transmission, when transmitting according to the subsequent operation, signal transmission is performed in a transmission mode with different antenna characteristics from the previous transmission, so the effect of polarization diversity As a result, the possibility of communication failure can be reduced, and the power consumption can be reduced compared to a remote controller that always transmits signals using the three antennas 11a, 11b, and 11c. Further, for example, when there is a high possibility that the user repeatedly operates the operation button 151a within a predetermined time, such as when communication fails and the lighting device 150 does not turn on / off, transmission is automatically performed according to the operation. Since signal transmission can be performed by changing the mode, troublesome work such as manually changing the setting of the transmission mode is not necessary, and the lighting device 150 can be turned on / off easily and reliably.

なお、本実施形態において、アンテナ部１１のアンテナの数は、３つに限らず、２つであっても、又は４つ以上であってもよい。図４は、ｎ個以上のアンテナ（ＡＮＴ１，ＡＮＴ２，…，ＡＮＴｎ，…）１１ａ，１１ｂ，…で信号を送受信可能な場合の送信モードの変更動作の動作態様の一例を示す。このとき、例えば初回（＃１）からｎ回目（＃ｎ）まで同一の連続操作を構成するように押下操作がなされた場合、無線送信回路部１２は、先ず、初回の操作に応じて第１アンテナ１１ａを用いた送信モードで信号送信を行う。その後、無線送信回路部１２は、押下操作毎に、制御部１３の制御により第２アンテナ１１ｂ、第３アンテナ１１ｃ、…、第ｎアンテナと順にアンテナを変更して送信モードを変更し、信号送信を行う。また、例えばｎ回目から所定時間を超える時間を空けて（ｎ＋１）回目の押下操作があったときには、それまでの連続操作とは別の連続操作が開始されることになるので、制御部１３の制御の下、当該操作に対応して、第１アンテナ１１ａでの信号送信が行われる。このようにアンテナの数が多い場合すなわち送信モードの数が多い場合でも、同様に、自動的に送信モードを変更し、確実に通信可能にすることができる。 In the present embodiment, the number of antennas of the antenna unit 11 is not limited to three, and may be two or four or more. FIG. 4 shows an example of the operation mode of the transmission mode changing operation when signals can be transmitted and received by n or more antennas (ANT1, ANT2,..., ANTn,...) 11a, 11b,. At this time, for example, when the pressing operation is performed to configure the same continuous operation from the first time (# 1) to the nth time (#n), the wireless transmission circuit unit 12 first performs the first operation according to the first operation. Signal transmission is performed in a transmission mode using the antenna 11a. After that, the radio transmission circuit unit 12 changes the transmission mode by changing the antenna in order of the second antenna 11b, the third antenna 11c,. I do. Further, for example, when there is an (n + 1) th pressing operation after a time exceeding a predetermined time from the nth time, a continuous operation different from the previous continuous operation is started. Under control, signal transmission is performed by the first antenna 11a in response to the operation. As described above, even when the number of antennas is large, that is, when the number of transmission modes is large, similarly, the transmission mode can be automatically changed to enable reliable communication.

また、アンテナ部は、複数のアンテナではなく、例えば１つのマイクロストリップアンテナで構成されていてもよい。このようなマイクロストリップアンテナは、比較的低い製造コストで製造可能であり、給電点を変更することにより、さまざまな偏波面の電波を放射可能である。すなわち、その場合、無線送信回路部１２は、マイクロストリップアンテナへの給電点を変更することにより、偏波面が異なる複数の送信モードで信号を送信可能であり、上述と同様に、偏波ダイバーシチの効果により確実に通信可能にすることができる。 Further, the antenna unit may be configured with, for example, one microstrip antenna instead of a plurality of antennas. Such a microstrip antenna can be manufactured at a relatively low manufacturing cost, and radio waves having various polarization planes can be radiated by changing the feeding point. That is, in this case, the radio transmission circuit unit 12 can transmit signals in a plurality of transmission modes having different polarization planes by changing the feeding point to the microstrip antenna. It is possible to reliably communicate with the effect.

さらにまた、上述の実施形態において、信号送信に用いるアンテナ１１ａ，１１ｂ，…の変更態様すなわち送信モードの変更態様は、各連続操作について常に同様の順で変更されるものに限られない。すなわち、例えば前回の連続操作で変更した順番とは逆の順番に送信モードを変更するようにしてもよく、操作ボタン１５１ａの操作が行われる度に、複数の送信モードのうち、少なくとも直前の操作に応じて信号を送信した送信モードとは異なる送信モードで所定の信号を送信するように構成されていればよい。また、新たな連続操作の初回に信号送信を行う送信モードは、上述のような常に同じ所定の送信モードでなくてもよい。すなわち、例えば、前回の連続操作が仮に続いていたとした場合に次に変更される送信モードを、初回の操作に対応する信号送信を行う所定の送信モードとするように構成してもよい。 Furthermore, in the above-described embodiment, the change mode of the antennas 11a, 11b,... Used for signal transmission, that is, the change mode of the transmission mode is not limited to that always changed in the same order for each continuous operation. That is, for example, the transmission mode may be changed in the reverse order to the order changed in the previous continuous operation. Every time the operation button 151a is operated, at least the immediately preceding operation among the plurality of transmission modes is performed. The predetermined signal may be transmitted in a transmission mode different from the transmission mode in which the signal is transmitted according to the above. Further, the transmission mode in which signal transmission is performed at the first time of a new continuous operation may not always be the same predetermined transmission mode as described above. That is, for example, if the previous continuous operation has been continued, the transmission mode to be changed next may be configured to be a predetermined transmission mode in which signal transmission corresponding to the first operation is performed.

また、本実施形態において、アンテナ部の３つのアンテナは、偏波面が異なるものに限られず、他のアンテナ特性が互いに異なるようなものであってもよい。例えば、互いに取り付け位置が異なる３つのアンテナを用いて、それらを上述のように切り替えることで、スイッチ１５２に到達する電波の位相が互いに異なる３つの送信モードで送信可能にしてもよい。図５（ａ）は、このように取り付け位置が異なるようにアンテナ１１１ａ，１１１ｂ，１１１ｃが配置されたアンテナ部１１１の構成の一例を示す。その場合、送信モードを変更することにより、空間ダイバーシチの効果により電波の干渉状況を変えてフェージングが発生しないようにすることができ、確実に通信可能にすることができる。なお、このような空間ダイバーシチの効果を得るためには、例えば、フェージングの発生する空間的間隔が最小で電波の波長の半分となることから、図に示すように、アンテナ１１１ａ，１１１ｂ，１１１ｃを半波長間隔で配置すればよく、アンテナの個数は２つ以上であればよい。また、例えば、アンテナ部が、放射する電波の指向性が互いに異なる３つのアンテナを用いて構成されており、電波の指向性が異なる３つの送信モードで電波を送信可能に構成されていてもよい。図５（ｂ）は、このように指向性が異なる３つのアンテナ２１１ａ，２１１ｂ，２１１ｃを有するアンテナ部２１１の構成を示す。その場合、指向性ダイバーシチの効果により、送信モードを変更することにより同一の受信点であるスイッチ１５２まで到達する電波の経路が変わるので、電波の干渉状況を変えてフェージングが発生しないようにすることができ、確実に通信可能にすることができる。 In the present embodiment, the three antennas of the antenna unit are not limited to those having different planes of polarization, and other antenna characteristics may be different from each other. For example, by using three antennas having different attachment positions and switching them as described above, transmission may be performed in three transmission modes having different phases of radio waves reaching the switch 152. FIG. 5A shows an example of the configuration of the antenna unit 111 in which the antennas 111a, 111b, and 111c are arranged so that the mounting positions are different. In that case, by changing the transmission mode, it is possible to change the radio wave interference state by the effect of space diversity so that fading does not occur, and communication can be reliably performed. In order to obtain the effect of such spatial diversity, for example, since the spatial interval at which fading occurs is a minimum and half the wavelength of the radio wave, the antennas 111a, 111b, and 111c are connected as shown in the figure. What is necessary is just to arrange | position with a half wavelength interval, and the number of antennas should just be two or more. Further, for example, the antenna unit may be configured using three antennas having different directivities of radiated radio waves, and may be configured to transmit radio waves in three transmission modes having different radio wave directivities. . FIG. 5B shows a configuration of the antenna unit 211 having the three antennas 211a, 211b, and 211c having different directivities. In that case, due to the effect of directional diversity, changing the transmission mode changes the path of the radio wave that reaches the switch 152, which is the same reception point, so that the radio wave interference status is changed so that fading does not occur. Can be reliably communicated.

次に、本発明の第２実施形態に係る照明制御システムについて説明する。以下に示す実施形態において、照明装置１５０、リモートコントローラ１５１、及びスイッチ１５２の各構成要素は、上述の第１実施形態と同様であり、同一の符号を付して説明する。第２実施形態においては、アンテナ部１１が例えば第１アンテナ１１ａと第２１１ｂとの２つである点と、制御部１３及び無線送信回路部１２により行われるリモートコントローラ１５１の送信モード変更動作とが、上述の第１実施形態と相違する。 Next, an illumination control system according to the second embodiment of the present invention will be described. In the embodiment shown below, each component of the illumination device 150, the remote controller 151, and the switch 152 is the same as that in the first embodiment described above, and will be described with the same reference numerals. In the second embodiment, there are two antenna units 11, for example, a first antenna 11 a and a 211 b, and a transmission mode change operation of the remote controller 151 performed by the control unit 13 and the wireless transmission circuit unit 12. This is different from the first embodiment described above.

図６は、第２実施形態におけるリモートコントローラ１５１の送信モードの変更動作の動作態様の一例を示す。無線送信回路部１２は、一連の連続操作において操作ボタン１５１ａの初回の押下操作（＃１）が行われたときには、制御部１３の制御により、第１実施形態と同様に、第１アンテナ（ＡＮＴ１）１１ａでの信号送信を行う（第１送信モード）。そして、同一の連続操作において第２回目の押下操作（＃２）が行われたときには、第２アンテナ（ＡＮＴ２）１１ｂでの信号送信を行う（第２送信モード）。ここで、第２実施形態においては、その後同一の連続操作において第３回目の押下操作（＃３）が行われると、制御部１３は、点灯信号を生成すると共に、直前の２回目の操作に応じて信号を送信した第２アンテナ１１ｂとは異なる第１アンテナ１１ａにアンテナを変更する（第１送信モード）。また、制御部１３は、それに続けて、既に信号送信を行ったアンテナであって今回信号送信を行う第１アンテナ１１ａとは異なる第２アンテナ１１ｂにアンテナを変更すると共に、点灯信号を生成する。これにより、無線送信回路部１２は、第１アンテナ１１ａを用いた第１送信モードで信号送信を行った後、それに続けて第２アンテナ１１ｂを用いた第２送信モードでも信号送信を行う。なお、図では第３回目の押下操作までしか示していないが、その後さらに同一の連続操作が継続するように押下操作があったときには、その操作毎に、直前の操作に応じて信号を送信したアンテナとは異なるアンテナを用いた送信モードでの信号送信に続けて、そのアンテナとは異なるアンテナであって当該連続操作において既に信号送信を行ったアンテナを用いた送信モードで信号送信が行われる。 FIG. 6 shows an example of the operation mode of the transmission mode changing operation of the remote controller 151 in the second embodiment. When the first pressing operation (# 1) of the operation button 151a is performed in a series of continuous operations, the wireless transmission circuit unit 12 controls the first antenna (ANT1) under the control of the control unit 13 as in the first embodiment. ) Perform signal transmission at 11a (first transmission mode). When the second pressing operation (# 2) is performed in the same continuous operation, signal transmission is performed by the second antenna (ANT2) 11b (second transmission mode). Here, in the second embodiment, when the third pressing operation (# 3) is subsequently performed in the same continuous operation, the control unit 13 generates a lighting signal and performs the immediately preceding second operation. In response, the antenna is changed to the first antenna 11a different from the second antenna 11b that transmitted the signal (first transmission mode). Further, subsequently, the control unit 13 changes the antenna to a second antenna 11b that is an antenna that has already transmitted signals and is different from the first antenna 11a that performs signal transmission this time, and generates a lighting signal. As a result, the radio transmission circuit unit 12 performs signal transmission in the first transmission mode using the first antenna 11a, and subsequently performs signal transmission also in the second transmission mode using the second antenna 11b. Although only the third pressing operation is shown in the figure, when there is a pressing operation so that the same continuous operation continues thereafter, a signal is transmitted for each operation according to the immediately preceding operation. Following signal transmission in a transmission mode using an antenna different from the antenna, signal transmission is performed in a transmission mode using an antenna that is different from that antenna and has already transmitted a signal in the continuous operation.

このように、第２実施形態では、通信が失敗するなどして連続して操作ボタン１５１ａが押下操作されたとき、既に信号送信を行ったアンテナを用いた送信モードでも自動的に再度信号送信を行う。従って、特に一時的にフェージングが発生する場合等、そのアンテナで前回信号を送信したときから周囲の電波環境等が変化しており、当該操作の時点でそのアンテナで良好に通信可能な状態になっている場合に、偏波ダイバーシチの効果により、より速やかに確実な通信を行うことができる。 As described above, in the second embodiment, when the operation button 151a is continuously pressed down due to communication failure or the like, the signal transmission is automatically performed again even in the transmission mode using the antenna that has already transmitted the signal. Do. Therefore, especially when fading occurs temporarily, the surrounding radio wave environment has changed since the previous signal was transmitted with the antenna, and the antenna is in a state where it can communicate satisfactorily at the time of the operation. In this case, reliable communication can be performed more promptly due to the effect of polarization diversity.

なお、第２実施形態において、送信モードの数は、２つではなく、さらに多くてもよい。その場合、例えば、次のように送信モードの変更及び信号送信をするようにすればよい。すなわち、まず、同一の連続操作において初回、２回目の操作に応じてそれぞれ第１送信モード、第２送信モードと変更して信号送信を行う。次に、３回目の操作に応じて、前回の送信の第２送信モードとは異なる第３送信モードと、既に送信した２つの送信モードから選択した例えば第１送信モードとの２つの送信モードで信号を送信する。また、４回目の操作に応じて、前回の送信の第３送信モードとは異なる第４送信モードと、既に送信した３つの送信モードから選択した例えば第２送信モードとで送信する。このように送信モードの変更及び信号送信をすることにより、上述と同様に速やかに確実な通信を行うことができる。なお、上述の送信モードの変更態様は例示であり、送信モードの変更順はこの通りでなくてもよい。また、同一の連続操作において３回目以降の操作に応じて信号送信を行う際、既に信号送信を行った１つの送信モードを含む合計２つの送信モードに限らず、既に信号送信を行った２つ以上の送信モードを含む合計３つ以上の送信モードで送信するようにしてもよい。すなわち、第２実施形態において、第３回目以降の押下操作に応じて信号を送信する送信モードや送信モードの数は、適宜選択し設定すればよい。 In the second embodiment, the number of transmission modes is not two but may be larger. In this case, for example, the transmission mode may be changed and signal transmission may be performed as follows. That is, first, in the same continuous operation, signal transmission is performed by changing to the first transmission mode and the second transmission mode according to the first and second operations, respectively. Next, in accordance with the third operation, there are two transmission modes including a third transmission mode different from the second transmission mode of the previous transmission and a first transmission mode selected from the two transmission modes already transmitted. Send a signal. Further, according to the fourth operation, transmission is performed in a fourth transmission mode different from the third transmission mode of the previous transmission and, for example, the second transmission mode selected from the three transmission modes already transmitted. By thus changing the transmission mode and transmitting signals, reliable communication can be performed promptly as described above. Note that the above-described change mode of the transmission mode is merely an example, and the change order of the transmission mode may not be this. Further, when signal transmission is performed in response to the third and subsequent operations in the same continuous operation, the signal transmission is not limited to a total of two transmission modes including one transmission mode that has already performed signal transmission. Transmission may be performed in a total of three or more transmission modes including the above transmission modes. That is, in the second embodiment, the transmission mode and the number of transmission modes for transmitting signals in response to the third and subsequent pressing operations may be appropriately selected and set.

図７は、本発明の第３実施形態に係る照明制御システムにおけるリモートコントローラ１５１の送信モードの変更動作の動作態様の一例を示す。第３実施形態において、照明制御システム１は例えば２つのアンテナ１１ａ，１１ｂで信号を送受信可能であり、一連の連続操作において操作ボタン１５１ａの２回目の押下操作（＃２）が行われたときまでの動作は第２実施形態と同様である。第３実施形態においては、その後同一の連続操作において第３回目以降の操作（＃３）が行われると、第２実施形態と同様に第１送信モード及び第２送信モードで信号を送信するが、このとき、各送信モードについて合計２回ずつ、送信モードを交互に切り替えながら、合計４回の信号送信を行う。すなわち、第３回目の押下操作が行われると、先ず、制御部１３の制御の下で、無線送信回路部１２は、第１アンテナ１１ａで信号送信を行う（第１送信モード）。その後、それに続けて、アンテナを第２アンテナ１１ｂ、第１アンテナ１１ａ、第２アンテナ１１ｂと交互に切り替えながら、第２送信モード、第１送信モード、第２送信モードの順で信号送信を行う。 FIG. 7 shows an example of the operation mode of the transmission mode change operation of the remote controller 151 in the illumination control system according to the third embodiment of the present invention. In the third embodiment, the illumination control system 1 can transmit and receive signals with two antennas 11a and 11b, for example, until the second pressing operation (# 2) of the operation button 151a is performed in a series of continuous operations. The operation of is the same as in the second embodiment. In the third embodiment, when the third and subsequent operations (# 3) are subsequently performed in the same continuous operation, signals are transmitted in the first transmission mode and the second transmission mode, as in the second embodiment. At this time, signal transmission is performed a total of four times while alternately switching the transmission mode twice for each transmission mode. That is, when the third pressing operation is performed, first, under the control of the control unit 13, the wireless transmission circuit unit 12 performs signal transmission with the first antenna 11a (first transmission mode). Subsequently, signal transmission is performed in the order of the second transmission mode, the first transmission mode, and the second transmission mode while the antenna is alternately switched to the second antenna 11b, the first antenna 11a, and the second antenna 11b.

第３実施形態では、このように各送信モードについて２回ずつ、１回ごとに送信モードを交互順に変更しながら信号送信を行うことにより、それまでに周囲の電波環境においてフェージングの発生状況の変化があっても、確実に且つ速やかに通信可能にすることができる。なお、送信モードを切り替える順番は上述に限られず、例えば第３回目の押下操作に応じて、第１送信モードで２回続けて信号送信を行い、その後第２送信モードで２回続けて信号送信を行ってもよい。また、各送信モードについて３回以上信号送信するようにしてもよい。第３実施形態において、３つ以上のアンテナを用いる等して３つ以上の送信モードで信号を送受信可能に構成してもよく、このとき、例えば第３回目以降の押下操作に応じて信号を送信する送信モード及び各送信モードで送信を繰り返す回数や送信順は、適宜選択し設定すればよい。 In the third embodiment, the signal transmission is performed while changing the transmission mode alternately every second for each transmission mode in this way, thereby changing the fading occurrence status in the surrounding radio wave environment until then. Even if there is, it is possible to reliably and promptly communicate. Note that the order of switching the transmission mode is not limited to the above. For example, in response to a third pressing operation, signal transmission is performed twice in the first transmission mode, and then signal transmission is performed twice in the second transmission mode. May be performed. Moreover, you may make it transmit a signal 3 times or more about each transmission mode. In the third embodiment, the signal may be transmitted and received in three or more transmission modes by using three or more antennas. At this time, for example, the signal is transmitted in response to a pressing operation after the third time. The transmission mode to be transmitted, the number of times transmission is repeated in each transmission mode, and the transmission order may be appropriately selected and set.

図８は、本発明の第４実施形態に係る照明制御システムにおけるリモートコントローラ１５１の送信モードの変更動作の動作態様の一例を示す。第４実施形態において、無線送信回路部１２は、上記第１実施形態と同様の送信モードの変更動作に加えて、制御部１３の制御の下、直前の操作から所定時間後に操作ボタン１５１ａの操作が行われたとき、前回に信号送信を行った送信モードで、当該操作に対応する信号送信を行うように構成されている。換言すると、一連の連続操作において初回の操作が行われたとき、無線送信回路部１２は、前回の連続操作において最後に信号送信を行った送信モードで、当該操作に対応する信号送信を行う。例えば、図に示すように、前回の連続操作において第１アンテナ１１ａを用いた第１送信モードで信号送信を行い、その後所定時間が経過し当該連続操作が終了していた場合、新たな連続操作の初回の操作（＃１）が行われると、無線送信回路部１２は、第１送信モードで信号送信を行う。その後、当該連続操作で第２回目の操作（＃２）が行われると、上述の第１実施形態と同様に送信モードが変更され、無線送信回路部１２は、第２アンテナ１１ｂを用いた第２送信モードで信号送信を行う。第２回目の操作が行われてから所定時間が経過し、その後、さらに別の新たな連続操作の初回の操作（＃３）が行われると、制御部１３の制御により、無線送信回路部１２は、前回の連続操作の最後に信号送信した送信モードである第２送信モードで信号送信を行う。 FIG. 8 shows an example of the operation mode of the transmission mode change operation of the remote controller 151 in the illumination control system according to the fourth embodiment of the present invention. In the fourth embodiment, the radio transmission circuit unit 12 operates the operation button 151a after a predetermined time from the previous operation under the control of the control unit 13, in addition to the transmission mode changing operation similar to that in the first embodiment. Is performed, the signal transmission corresponding to the operation is performed in the transmission mode in which the signal transmission was performed last time. In other words, when the first operation is performed in a series of continuous operations, the wireless transmission circuit unit 12 performs signal transmission corresponding to the operation in the transmission mode in which signal transmission was performed last in the previous continuous operation. For example, as shown in the figure, when a signal is transmitted in the first transmission mode using the first antenna 11a in the previous continuous operation, and after the predetermined time has elapsed, the continuous operation is completed. When the first operation (# 1) is performed, the wireless transmission circuit unit 12 performs signal transmission in the first transmission mode. Thereafter, when the second operation (# 2) is performed in the continuous operation, the transmission mode is changed as in the first embodiment, and the wireless transmission circuit unit 12 uses the second antenna 11b. Signal transmission is performed in the two transmission mode. When a predetermined time elapses after the second operation is performed and then the first operation (# 3) of another new continuous operation is performed, the wireless transmission circuit unit 12 is controlled by the control unit 13. Performs signal transmission in the second transmission mode, which is the transmission mode in which the signal is transmitted at the end of the previous continuous operation.

このように、第４実施形態においては、最初の操作が行われたとき、最後に通信が成功したと考えられる送信モードで信号送信を行うので、例えば常に同じ送信モードで送信する場合と比較して当該操作時に通信が失敗する可能性を低くすることができ、より確実に通信可能にすることができる。 As described above, in the fourth embodiment, when the first operation is performed, signal transmission is performed in the transmission mode in which communication is considered to be successful at the end. Therefore, for example, as compared with the case where transmission is always performed in the same transmission mode. Therefore, the possibility of communication failure during the operation can be reduced, and communication can be made more reliably.

なお、本発明は上記実施形態の構成に限定されるものではなく、発明の趣旨を変更しない範囲で適宜に種々の変形が可能である。例えば、操作ボタンは、押ボタンに限られず、タッチセンサを備えていたり、他の形式のスイッチを備えているものでもよい。また、操作ボタン１５１ａは、オンボタンとオフボタンを有しており、制御部１３が、操作されたボタンに対応する操作信号が入力される度に照明装置１５０を点灯するための点灯信号または消灯するための消灯信号を生成するように構成されていてもよい。この場合、操作ボタン１５１ａのうち点灯又は消灯のいずれか同一の操作が所定時間内に繰り返し操作された場合に継続する連続操作において、送信モードの変更が行われるようにすればよい。また、上記第２実施形態乃至第４実施形態においても、第１実施形態において説明したのと同様に、アンテナ部を、空間ダイバーシチや指向性ダイバーシチの効果を得られるように構成してもよい。さらにまた、アンテナ部を、偏波面及び取り付け位置及び／又は指向性が共に異なる等、アンテナ特性が互いに複合的に異なるような複数のアンテナで構成してもよい。その場合であっても、送信モードを変更してフェージングの発生状況を変更することができる。 In addition, this invention is not limited to the structure of the said embodiment, A various deformation | transformation is possible suitably in the range which does not change the meaning of invention. For example, the operation buttons are not limited to push buttons, and may include touch sensors or other types of switches. The operation button 151a has an on button and an off button, and the control unit 13 turns on or turns off the lighting device 150 each time an operation signal corresponding to the operated button is input. It may be configured to generate a turn-off signal for the purpose. In this case, the transmission mode may be changed in a continuous operation that is continued when the same operation of turning on or off of the operation buttons 151a is repeatedly performed within a predetermined time. Also in the second to fourth embodiments, as described in the first embodiment, the antenna unit may be configured to obtain the effects of space diversity and directivity diversity. Furthermore, the antenna unit may be composed of a plurality of antennas whose antenna characteristics are complexly different from each other, such as different polarization planes and attachment positions and / or directivities. Even in that case, it is possible to change the fading occurrence state by changing the transmission mode.

また、無線送信回路部１２による信号送信の態様は上述に限られず、上記第１実施形態乃至第４実施形態の各特徴部分のうち複数を具備するような態様で信号送信を行うように構成されていてもよい。例えば、上記第２実施形態のように、同一の連続操作において、送信モードの変更による第１送信モードでの信号送信と既に送信した送信モードである第２送信モードでの信号送信を伴う第３回目の操作が行われて連続操作が終了したとする。このとき、次回の押下操作があったときには、第４実施形態に示すように、例えば、最後の操作があったときに送信モードの変更により信号送信を行った第１送信モードで信号送信を行うようにしてもよいし、最後の操作に対応して最後に信号送信を行った第２送信モードで信号送信を行うようにしてもよい。このように、上記実施形態を組み合わせたような構成である場合でも、同一の連続操作において送信モードを自動的に変更して信号送信を行うことにより、フェージングによる通信の失敗を防止することができる。 Further, the mode of signal transmission by the wireless transmission circuit unit 12 is not limited to the above, and is configured to perform signal transmission in such a manner that a plurality of characteristic parts of the first to fourth embodiments are provided. It may be. For example, as in the second embodiment, in the same continuous operation, the third transmission involves signal transmission in the first transmission mode by changing the transmission mode and signal transmission in the second transmission mode that is the transmission mode that has already been transmitted. Assume that the second operation is performed and the continuous operation ends. At this time, when the next pressing operation is performed, as shown in the fourth embodiment, for example, signal transmission is performed in the first transmission mode in which signal transmission is performed by changing the transmission mode when the last operation is performed. Alternatively, signal transmission may be performed in the second transmission mode in which signal transmission was performed last in response to the last operation. As described above, even when the configuration is combined with the above embodiments, communication failure due to fading can be prevented by automatically changing the transmission mode and performing signal transmission in the same continuous operation. .

さらにまた、本発明は、上述のようにユーザが把持して操作可能なリモートコントローラ１５１にのみ適用可能なものではない。図９は、例えば、リモートコントローラ１５１に替えて、壁面に配設されユーザが操作可能な操作ボタン２５１ａを有する送信器２５１を用いた照明制御システム２０１の一例を示す。送信器２５１の構成は上述のリモートコントローラ１５１の構成とほぼ同様であって、ユーザは、壁面に配設された送信器２５１の操作ボタン２５１ａを操作することにより、照明装置１５０の点灯／消灯を行うことができる。このような構成であっても、送信器２５１において、同一の連続操作で自動的に送信モードの変更を行うようにすることにより、フェージング等がある環境下においても、偏波ダイバーシチ等により、確実に照明装置１５０の点灯／消灯を行うことができる。なお、送信器２５１は、１つのスイッチ１５２に対して複数個併用して使用可能にされていてもよい。 Furthermore, the present invention is not applicable only to the remote controller 151 that can be held and operated by the user as described above. FIG. 9 shows an example of an illumination control system 201 using a transmitter 251 that is provided on a wall surface and has an operation button 251a that can be operated by a user, instead of the remote controller 151, for example. The configuration of the transmitter 251 is almost the same as the configuration of the remote controller 151 described above, and the user operates the operation button 251a of the transmitter 251 provided on the wall surface to turn on / off the illumination device 150. It can be carried out. Even in such a configuration, the transmitter 251 automatically changes the transmission mode by the same continuous operation, so that even in an environment with fading or the like, it is ensured by polarization diversity or the like. In addition, the lighting device 150 can be turned on / off. Note that a plurality of transmitters 251 may be used in combination with one switch 152.

なお、本発明は、上述のように照明装置のオン・オフを制御する照明制御システムのほか、送信器から送信された信号に応じて動作をオン・オフする空調システムや給湯システム、又は送信器から送信された所定の信号を受信して通報動作を行う防犯システムなど、他の用途に用いられる負荷制御システムにおいても用いることが可能である。すなわち、その負荷制御システムの動作を信号を電波により送信することにより遠隔制御するために用いられるような送信器において、上述のような態様で送信モードの変更を自動的に行って信号を送信するように構成することにより、フェージングがある環境下においても、通信の失敗を防止し、容易且つ確実に負荷の制御を行うことができる。 In addition to the illumination control system that controls on / off of the illumination device as described above, the present invention provides an air conditioning system, a hot water supply system, or a transmitter that turns on / off the operation according to a signal transmitted from the transmitter. It can also be used in a load control system used for other purposes, such as a security system that receives a predetermined signal transmitted from the terminal and performs a notification operation. That is, in a transmitter used to remotely control the operation of the load control system by transmitting a signal by radio wave, the signal is transmitted by automatically changing the transmission mode in the manner as described above. With this configuration, it is possible to prevent a communication failure and easily and reliably control the load even in an environment with fading.

本発明の第１実施形態に係る照明制御システムの一例を示す図。The figure which shows an example of the illumination control system which concerns on 1st Embodiment of this invention. 上記照明制御システムのリモートコントローラ及びスイッチの構成を示すブロック図。The block diagram which shows the structure of the remote controller and switch of the said illumination control system. 上記リモートコントローラの信号送信態様の一例を示す図。The figure which shows an example of the signal transmission aspect of the said remote controller. 上記リモートコントローラの信号送信態様の一変形例を示す図。The figure which shows the modification of the signal transmission aspect of the said remote controller. （ａ）は上記リモートコントローラのアンテナ部の一変形例の構成を示す図、（ｂ）は同アンテナ部のさらに別の変形例の構成を示す図。(A) is a figure which shows the structure of one modification of the antenna part of the said remote controller, (b) is a figure which shows the structure of another modification of the same antenna part. 本発明の第２実施形態に係る照明制御システムのリモートコントローラの信号送信態様の一例を示す図。The figure which shows an example of the signal transmission aspect of the remote controller of the illumination control system which concerns on 2nd Embodiment of this invention. 本発明の第３実施形態に係る照明制御システムのリモートコントローラの信号送信態様の一例を示す図。The figure which shows an example of the signal transmission aspect of the remote controller of the illumination control system which concerns on 3rd Embodiment of this invention. 本発明の第４実施形態に係る照明制御システムのリモートコントローラの信号送信態様の一例を示す図。The figure which shows an example of the signal transmission aspect of the remote controller of the illumination control system which concerns on 4th Embodiment of this invention. 上記照明制御システムの一変形例の構成を示す図。The figure which shows the structure of the modification of the said illumination control system.

１，２０１照明制御システム（負荷制御システム）
１１，１１１，２１１アンテナ部
１１ａ，１１ｂ，１１ｃ，１１１ａ，１１１ｂ，１１１ｃ，２１１ａ，２１１ｂ，２１１ｃ（送信器の）アンテナ
１２無線送信回路部
１３（送信器の）制御部
２１（受信器の）アンテナ
２２無線受信回路部
２３（受信器の）制御部
２４負荷制御回路部
２５電源回路
５０電源
１５０照明装置（負荷）
１５１リモートコントローラ（送信器）
１５１ａ，２５１ａ操作ボタン（操作部）
１５２スイッチ（受信器）
２５１送信器 1,201 Lighting control system (load control system)
11, 111, 211 Antenna unit 11a, 11b, 11c, 111a, 111b, 111c, 211a, 211b, 211c (transmitter) antenna 12 Wireless transmission circuit unit 13 (transmitter) control unit 21 (receiver) antenna 22 wireless reception circuit unit 23 (receiver) control unit 24 load control circuit unit 25 power supply circuit 50 power supply 150 lighting device (load)
151 Remote controller (transmitter)
151a, 251a Operation buttons (operation unit)
152 switch (receiver)
251 transmitter

Claims

A transmitter that transmits a signal by radio waves, and a receiver that has a function of receiving radio waves and that has a control function that is connected to a load and controls at least on / off of the load;
The transmitter controls the radio transmission circuit unit based on an antenna unit, a radio transmission circuit unit that transmits a signal from the antenna unit, an operation unit operated by a user, and an operation applied to the operation unit And a control unit that transmits a predetermined signal,
The receiver includes an antenna unit, a radio reception circuit unit that receives a radio wave using the antenna unit and extracts a signal, a load control circuit unit that opens and closes a power supply path from a power source to the load, and the radio reception circuit A control unit that performs operation control of the load control circuit according to a signal received by the unit,
In a load control system configured to operate the load in response to a predetermined operation of the operation unit applied by a user,
The antenna part of the transmitter is configured to be able to radiate radio waves in a plurality of transmission modes having different antenna characteristics from each other,
The wireless transmission circuit unit includes:
It is configured to be able to transmit a signal by switching the plurality of transmission modes,
When the predetermined operation is performed again within a predetermined time after the predetermined operation of the operation unit is performed, when the first predetermined operation is performed, the predetermined transmission mode among the plurality of transmission modes is performed. A transmission mode in which the same predetermined signal is transmitted at the time, and each time the predetermined operation is performed within a predetermined time from the immediately preceding operation, a signal is transmitted in response to at least the immediately preceding operation among the plurality of transmission modes. transmitting the predetermined signal at a different transmission mode and,
What is the transmission mode in which a signal is transmitted according to the immediately preceding operation among the plurality of transmission modes each time the predetermined operation is performed after the first predetermined operation and the second operation are performed. A load control system, wherein the predetermined signal is transmitted continuously in a different transmission mode and at least one transmission mode among transmission modes different from the transmission mode in which signal transmission has already been performed. .

When the predetermined operation of the operation unit is performed and the predetermined operation is performed twice or more within a predetermined time after the predetermined operation, the wireless transmission circuit unit performs the first predetermined operation and After the second operation, when the predetermined operation is further performed, the predetermined operation is performed a plurality of times for each transmission mode while sequentially switching a plurality of transmission modes for signal transmission according to the operation. The load control system according to claim 1, wherein:

The wireless transmission circuit unit transmits the predetermined signal in a transmission mode in which the predetermined signal was transmitted last time when the predetermined operation of the operation unit is performed after a predetermined time from the previous operation. The load control system according to claim 1 or 2, characterized by the above-mentioned.

The transmitter antenna is a plurality of antennas having different planes of polarization,
The radio reception circuit unit is configured to be able to switch the transmission mode by switching an antenna used for signal transmission among the plurality of antennas. Load control system as described in.

The antenna of the transmitter is a plurality of antennas with different mounting positions ,
The radio receiver circuit includes any one of claims 1 to 3, characterized in that it is configured to switch between the transmission mode by switching the antenna used for signal transmission among the plurality of antennas Load control system as described in.

The antenna of the transmitter is a plurality of antennas having different directivities ,
The radio receiver circuit includes any one of claims 1 to 3, characterized in that it is configured to switch between the transmission mode by switching the antenna used for signal transmission among the plurality of antennas Load control system as described in.