JP2019200938A - Illumination control system - Google Patents

Illumination control system Download PDF

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JP2019200938A
JP2019200938A JP2018095664A JP2018095664A JP2019200938A JP 2019200938 A JP2019200938 A JP 2019200938A JP 2018095664 A JP2018095664 A JP 2018095664A JP 2018095664 A JP2018095664 A JP 2018095664A JP 2019200938 A JP2019200938 A JP 2019200938A
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illuminance
daylight
illumination
value
lighting
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JP7183570B2 (en
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浩治 柴田
Koji Shibata
浩治 柴田
幸喜 岩坪
Koki Iwatsubo
幸喜 岩坪
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Mitsubishi Electric Corp
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    • 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

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Abstract

To obtain an illumination control system capable of making actual brightness in a detection range of an illuminance sensor be constant even on the condition that daylight is incident.SOLUTION: An illuminance sensor 2 detects a current illuminance value of reflected light generated by reflection, on a detection range surface, of light generated by superposition of illumination light of an illumination apparatus 1 and daylight. An illumination controller 3 calculates the illumination light's contribution to the current illuminance value from a reference dimming rate, reference illuminance value, and current dimming rate of the illumination apparatus 1; calculates the daylight's contribution by subtracting the illumination light's contribution from the current illuminance value; performs daylight correction of calculating a daylight correction illuminance value by multiplying a daylight correction value by the daylight's contribution; calculates a dimming rate for making the illumination apparatus 1 emit light so as to acquire an illuminance value obtained by subtracting the daylight correction illuminance value from a target illuminance value; and controls the illumination apparatus 1 so that the calculated dimming rate is achieved.SELECTED DRAWING: Figure 1

Description

本発明は、照明器具を制御する照明制御システムに関する。   The present invention relates to a lighting control system for controlling a lighting fixture.

照度センサが検出した照度と予め設定された照度レベルとの明暗を比較し、その明暗に応じて照明器具を制御する照明制御システムが提案されている（例えば、特許文献１（段落００１２、００５２）参照）。   There has been proposed an illumination control system that compares light and darkness between an illuminance detected by an illuminance sensor and a preset illuminance level, and controls a lighting fixture according to the lightness and darkness (for example, Patent Document 1 (paragraphs 0012 and 0052)). reference).

特開２０１１−２９０３４号公報JP 2011-29034 A

室内には、照明器具の照明光だけでなく、窓などから昼光が入射される。従って、照度センサは、照明器具の照明光と昼光が重なった光が検出範囲面で反射した反射光の照度値を検出する。しかし、検出した照度値における昼光の寄与分を照度センサが過大に測定し、照明制御システムが実際より暗く照明を制御する場合があった。このため、照度センサの検出範囲の実際の明るさを一定に制御することができないという問題があった。   Not only the illumination light of the lighting fixture but also daylight enters the room from a window or the like. Therefore, the illuminance sensor detects the illuminance value of the reflected light that is reflected from the detection range surface by the light in which the illumination light of the lighting fixture overlaps the daylight. However, there are cases where the illuminance sensor excessively measures the contribution of daylight in the detected illuminance value, and the illumination control system controls the illumination darker than the actual. For this reason, there was a problem that the actual brightness of the detection range of the illuminance sensor could not be controlled to be constant.

本発明は、上述のような課題を解決するためになされたもので、その目的は昼光が入光する条件でも照度センサの検出範囲の実際の明るさを一定にすることができる照明制御システムを得るものである。   The present invention has been made to solve the above-described problems, and an object thereof is an illumination control system capable of making the actual brightness of the detection range of the illuminance sensor constant even under daylight incident conditions. Is what you get.

本発明に係る照明制御システムは、照明器具の照明光と昼光が重なった光が検出範囲面で反射した反射光の現在照度値を検出する照度センサと、該照明器具の基準調光率と基準照度値と現在調光率から該現在照度値における該照明光の寄与分を算出し、該現在照度値から該照明光の寄与分を差し引いて該現在照度値における該昼光の寄与分を算出し、該昼光の寄与分に昼光補正値をかけて昼光補正照度値を算出する昼光補正を行い、目標照度値から該昼光補正照度値を差し引いた照度値を得るように該照明器具を発光させる調光率を算出し、算出した調光率になるように該照明器具を制御する照明コントローラとを備えることを特徴とする。   An illumination control system according to the present invention includes an illuminance sensor that detects a current illuminance value of reflected light that is reflected by a detection range surface of light that overlaps illumination light of a luminaire and daylight, and a reference dimming rate of the luminaire. The contribution of the illumination light in the current illumination value is calculated from the reference illumination value and the current dimming rate, and the contribution of the daylight in the current illumination value is calculated by subtracting the contribution of the illumination light from the current illumination value. Calculate and apply daylight correction value to the contribution of daylight to perform daylight correction to calculate daylight correction illuminance value, and obtain an illuminance value by subtracting the daylight correction illuminance value from the target illuminance value A lighting controller that calculates a dimming rate for causing the lighting fixture to emit light and controls the lighting fixture to have the calculated dimming rate is provided.

本発明では、照明コントローラは、照明器具の基準調光率と基準照度値と現在調光率から現在照度値における照明光の寄与分を算出し、現在照度値から照明光の寄与分を差し引いて現在照度値における昼光の寄与分を算出し、昼光の寄与分に昼光補正値をかけて昼光補正照度値を算出する昼光補正を行い、目標照度値から昼光補正照度値を差し引いた照度値を得るように照明器具を発光させる調光率を算出し、算出した調光率になるように照明器具を制御する。このような昼光補正を行うことで照度センサの検出範囲の実際の明るさを一定にすることができる。   In the present invention, the illumination controller calculates the contribution of illumination light in the current illuminance value from the reference dimming rate, reference illuminance value, and current dimming rate of the lighting fixture, and subtracts the contribution of illumination light from the current illuminance value. Calculate the daylight contribution in the current illuminance value, multiply the daylight contribution by the daylight correction value to calculate the daylight correction illuminance value, and calculate the daylight correction illuminance value from the target illuminance value. A dimming rate for causing the luminaire to emit light is calculated so as to obtain the subtracted illuminance value, and the luminaire is controlled so as to obtain the calculated dimming rate. By performing such daylight correction, the actual brightness of the detection range of the illuminance sensor can be made constant.

実施の形態に係る照明制御システムを示す図である。It is a figure which shows the illumination control system which concerns on embodiment. 実施の形態に係る照明制御システムの制御範囲を示す平面図である。It is a top view which shows the control range of the illumination control system which concerns on embodiment. 実施の形態に係る照明制御システムの制御範囲を示す平面図である。It is a top view which shows the control range of the illumination control system which concerns on embodiment. 実施の形態に係る照明制御システムの制御範囲を示す平面図である。It is a top view which shows the control range of the illumination control system which concerns on embodiment. 照度センサの検出の様子を示す断面図である。It is sectional drawing which shows the mode of a detection of an illumination intensity sensor. 実施の形態に係る照明制御システムの内部構成を示す図である。It is a figure which shows the internal structure of the illumination control system which concerns on embodiment. 実施の形態に係る照明コントローラのマイコンを示す図である。It is a figure which shows the microcomputer of the illumination controller which concerns on embodiment. 昼光補正の前後を説明するための図である。It is a figure for demonstrating before and after daylight correction.

図１は、実施の形態に係る照明制御システムを示す図である。複数の照明器具１が設けられ、第１から第ｎのグループに分けられている。各グループに１又は複数の照度センサ２が設けられている。照明コントローラ３は、グループごとに照度センサ２が測定した現在照度値に基づいて複数の照明器具１を制御する。照明コントローラ３は調光信号線又は通信線を介して照明器具１に接続され、通信線を介して照明器具１に接続されている。   FIG. 1 is a diagram illustrating a lighting control system according to an embodiment. A plurality of lighting fixtures 1 are provided and divided into first to nth groups. Each group is provided with one or a plurality of illuminance sensors 2. The lighting controller 3 controls the plurality of lighting fixtures 1 based on the current illuminance value measured by the illuminance sensor 2 for each group. The lighting controller 3 is connected to the lighting fixture 1 via a dimming signal line or a communication line, and is connected to the lighting fixture 1 via a communication line.

図２から図４は、実施の形態に係る照明制御システムの制御範囲を示す平面図である。図２では照明コントローラ３が照度センサ２を内蔵している。図３及び図４では１つの照明コントローラ３とは別に複数の照度センサ２が設けられている。各照度センサ２の検出範囲は、その照度センサ２を中心とした円形である。照度センサ２の検出範囲の一部に窓などから昼光が入光している。図２及び図３では照明制御システムの制御範囲は全体である。図４では照明制御システムの制御範囲は３つのグループに分かれている。   2 to 4 are plan views showing a control range of the illumination control system according to the embodiment. In FIG. 2, the illumination controller 3 has a built-in illuminance sensor 2. 3 and 4, a plurality of illuminance sensors 2 are provided separately from one illumination controller 3. The detection range of each illuminance sensor 2 is a circle centered on the illuminance sensor 2. Daylight enters a part of the detection range of the illuminance sensor 2 from a window or the like. 2 and 3, the control range of the illumination control system is the whole. In FIG. 4, the control range of the lighting control system is divided into three groups.

図５は、照度センサの検出の様子を示す断面図である。部屋の天井に照明器具１と照度センサ２が設けられている。照度センサ２の検出範囲面は部屋の床である。部屋の窓などから照度センサ２の検出範囲面に昼光が入光する。もし光の散乱がなく検出範囲面が鏡であるならば、昼光は完全反射されるため、照度センサ２に測定される昼光の明るさは０である。実際には検出範囲面は床材等であるため、昼光は全方向反射され、照度センサ２が昼光の明るさを測定する。この場合、検出範囲面に入光する照明器具１の照明光と昼光の重なった光が照度センサ２の検出範囲面で反射し、この反射光の現在照度値を照度センサ２が検出する。   FIG. 5 is a cross-sectional view showing how the illuminance sensor is detected. A lighting fixture 1 and an illuminance sensor 2 are provided on the ceiling of the room. The detection range surface of the illuminance sensor 2 is the floor of the room. Daylight enters the detection range surface of the illuminance sensor 2 from a window of the room. If there is no light scattering and the detection range surface is a mirror, daylight is completely reflected, so the brightness of daylight measured by the illuminance sensor 2 is zero. Actually, since the detection range surface is a flooring or the like, daylight is reflected in all directions, and the illuminance sensor 2 measures the brightness of daylight. In this case, the illumination light of the lighting fixture 1 entering the detection range surface and the light that overlaps the daylight is reflected by the detection range surface of the illuminance sensor 2, and the illuminance sensor 2 detects the current illuminance value of the reflected light.

図６は、実施の形態に係る照明制御システムの内部構成を示す図である。照明コントローラ３が１又は複数の照明器具１を制御する。照明コントローラ３は、１又は複数の調光信号出力回路４又は第１の通信回路５を有する。調光信号出力回路４は、有線の調光信号線を介して１又は複数の照明器具１へＰＷＭ信号にて調光率の指示を行う。第１の通信回路５は、有線の通信線又は無線を介して１又は複数の照明器具１へ電文にて調光率の指示を行う。電文は個別アドレスとグループアドレスも含む。   FIG. 6 is a diagram illustrating an internal configuration of the illumination control system according to the embodiment. The lighting controller 3 controls one or more lighting fixtures 1. The lighting controller 3 includes one or a plurality of dimming signal output circuits 4 or a first communication circuit 5. The dimming signal output circuit 4 instructs the dimming rate with a PWM signal to one or a plurality of lighting fixtures 1 via a wired dimming signal line. The first communication circuit 5 instructs the dimming rate with a message to one or a plurality of lighting fixtures 1 via a wired communication line or wirelessly. The message includes an individual address and a group address.

照明器具１は、電源６と、光源７と、制御回路８と、調光信号入力回路９又は第２の通信回路１０とを有する。電源６は制御回路８等に電力を供給する。調光信号入力回路９は照明コントローラ３又は図示されていない調光器から出力されたＰＷＭ信号を受信する。ＰＷＭ信号はパルスのデューティ比に変調して送信された調光率を含む。第２の通信回路１０は照明コントローラ３から出力された電文を受信する。制御回路８は、照明コントローラ３からＰＷＭ信号又は電文で送られてきた指示に応じて光源７の点灯、調光又は消灯の制御を行うマイコンを含むものである。電文はグループアドレス、個別アドレス、調光率、フェード時間を含む。メモリ１１はグループアドレスと個別アドレスを記憶し、照度センサによる照度一定制御を行うための現在照度値等の制御情報を記憶する。制御回路８がメモリ１１を内蔵する場合もある。照明器具１の制御回路８は、その照明器具１が電文のグループアドレスと個別アドレスに該当する場合は、電文で指定されたフェード時間で新たに指定された調光率まで光源７の調光率を制御する。なお、照明器具１は、フェード途中で新たな調光率とフェード時間を受信した場合、受信したタイミングの調光率から新たに指定された調光率まで新たに指定されたフェード時間で光源７を制御する。   The luminaire 1 includes a power source 6, a light source 7, a control circuit 8, a dimming signal input circuit 9, or a second communication circuit 10. The power source 6 supplies power to the control circuit 8 and the like. The dimming signal input circuit 9 receives a PWM signal output from the lighting controller 3 or a dimmer (not shown). The PWM signal includes the dimming rate transmitted after being modulated to the duty ratio of the pulse. The second communication circuit 10 receives the message output from the lighting controller 3. The control circuit 8 includes a microcomputer that controls turning on, dimming, or turning off the light source 7 in accordance with an instruction sent from the lighting controller 3 by a PWM signal or a telegram. The message includes a group address, individual address, dimming rate, and fade time. The memory 11 stores group addresses and individual addresses, and stores control information such as a current illuminance value for performing constant illuminance control by the illuminance sensor. The control circuit 8 may incorporate the memory 11 in some cases. When the lighting device 1 corresponds to the group address and individual address of the message, the control circuit 8 of the lighting device 1 adjusts the dimming rate of the light source 7 to the newly specified dimming rate with the fade time specified in the message. To control. When the lighting fixture 1 receives a new dimming rate and fade time during the fade, the light source 7 has a newly specified fade time from the dimming rate at the received timing to the newly specified dimming rate. To control.

照明コントローラ３が１つの照度センサ２を内蔵しているか、又は照明コントローラ３に１又は複数の照度センサ端末器１２が有線の通信線又は無線で接続されている。照明コントローラ３が照度センサ２を内蔵している場合は、照度センサ２は現在照度値を測定し、その現在照度値を照明コントローラ３のマイコン１３へ出力する。マイコン１３は、照度センサ２が測定した現在照度値を入力するポートを有する。照明コントローラ３に照度センサ端末器１２が接続されている場合は、第１の通信回路５が照度センサ端末器１２へ電文にて現在照度値を要求し、送られてきた現在照度値を電文にて受信してマイコン１３に提供する。   The illumination controller 3 includes one illuminance sensor 2 or one or more illuminance sensor terminals 12 are connected to the illumination controller 3 by a wired communication line or wirelessly. When the illumination controller 3 includes the illuminance sensor 2, the illuminance sensor 2 measures the current illuminance value and outputs the current illuminance value to the microcomputer 13 of the illumination controller 3. The microcomputer 13 has a port for inputting the current illuminance value measured by the illuminance sensor 2. When the illuminance sensor terminal 12 is connected to the illumination controller 3, the first communication circuit 5 requests the illuminance sensor terminal 12 for the current illuminance value by a message, and the sent current illuminance value is converted to a message. Are received and provided to the microcomputer 13.

照度センサ端末器１２は、第３の通信回路１４、メモリ１５、マイコン１６及び照度センサ２を有する。メモリ１５はグループアドレスと個別アドレス及び現在照度値を記憶する。第３の通信回路１４は、照明コントローラ３から送信されたグループアドレス、個別アドレス、現在照度値の要求を含む電文を受信する。マイコン１６は、その電文に応じて、照度センサ２が測定した現在照度値を第３の通信回路１４を介して照明コントローラ３へ電文で送信する。なお、照度センサ端末器１２が電文を自己発報すると、ランダムに照明コントローラ３に電文が入力され、照明コントローラ３が電文を管理できない。このため、本実施の形態では、照度センサ端末器１２は電文を受動発報する構成としている。   The illuminance sensor terminal 12 includes a third communication circuit 14, a memory 15, a microcomputer 16, and an illuminance sensor 2. The memory 15 stores a group address, an individual address, and a current illuminance value. The third communication circuit 14 receives a message including a group address, an individual address, and a request for the current illuminance value transmitted from the lighting controller 3. In response to the message, the microcomputer 16 transmits the current illuminance value measured by the illuminance sensor 2 to the illumination controller 3 via the third communication circuit 14 as a message. When the illuminance sensor terminal 12 issues a message itself, the message is randomly input to the lighting controller 3, and the lighting controller 3 cannot manage the message. For this reason, in this Embodiment, the illumination intensity sensor terminal device 12 is set as the structure which passively issues a message | telegram.

照明コントローラ３のマイコン１３及び照度センサ端末器１２のマイコン１６は、例えば０．５秒毎に、０．５秒前の照度の割合を例えば６および現在照度値の割合を例えば４とした重み付け計算を行い、算出した照度値を現在照度値とする照度測定処理機能を有する。これにより、現在照度値の急激な変化を抑制することができる。   The microcomputer 13 of the illumination controller 3 and the microcomputer 16 of the illuminance sensor terminal 12 are weighted and calculated, for example, by setting the ratio of illuminance before 0.5 seconds to 6 and the ratio of the current illuminance value to 4, for example, every 0.5 seconds. And an illuminance measurement processing function having the calculated illuminance value as the current illuminance value. Thereby, a rapid change in the current illuminance value can be suppressed.

図７は、実施の形態に係る照明コントローラのマイコンを示す図である。メモリ１７は、１又は複数の照明器具１と照度センサ端末器１２のグループアドレスと個別アドレス、基準調光率、基準照度値、目標照度値、及び昼光補正値を記憶する。現在照度値送受信部１８は、照度センサ２が測定した現在照度値を、第１の通信回路５を介して電文にて送受信するか、又は、内蔵した照度センサ２から直接受信する。調光率算出部１９は、照明器具１を発光させる調光率を算出する。調光率送信部２０は、算出された調光率を照明器具１へ送信する。調光率の送信は、調光信号出力回路４を介してＰＷＭ信号に変調して行うか、又は、第１の通信回路５を介して電文にて行う。   FIG. 7 is a diagram illustrating a microcomputer of the lighting controller according to the embodiment. The memory 17 stores group addresses and individual addresses of one or a plurality of lighting fixtures 1 and the illuminance sensor terminal 12, reference dimming rate, reference illuminance value, target illuminance value, and daylight correction value. The current illuminance value transmission / reception unit 18 transmits / receives the current illuminance value measured by the illuminance sensor 2 via a telegram via the first communication circuit 5 or directly from the built-in illuminance sensor 2. The dimming rate calculation unit 19 calculates the dimming rate for causing the lighting fixture 1 to emit light. The dimming rate transmission unit 20 transmits the calculated dimming rate to the lighting fixture 1. The transmission of the dimming rate is performed by modulating the PWM signal via the dimming signal output circuit 4 or by telegram via the first communication circuit 5.

照度センサ２の検出範囲には照明器具１の照明光に加えて昼光が入射するため、照度センサ２が測定する現在照度値は照明光の寄与分と昼光の寄与分の和となる。また、照度センサ２の出力値と照明器具１の調光率が比例関係にあるため、照明器具１の調光率と基準照度値を用いて照度センサ２の出力値を照度に変換することができる。そこで、照明コントローラ３の調光率算出部１９は、照明器具１の基準調光率と基準照度値と現在調光率から現在照度値における照明光の寄与分を算出する。そして、調光率算出部１９は、現在照度値から照明光の寄与分を差し引いて現在照度値における昼光の寄与分を算出する。   Since daylight enters the detection range of the illuminance sensor 2 in addition to the illumination light of the luminaire 1, the current illuminance value measured by the illuminance sensor 2 is the sum of the contribution of illumination light and the contribution of daylight. Moreover, since the output value of the illuminance sensor 2 and the dimming rate of the luminaire 1 are in a proportional relationship, the output value of the illuminance sensor 2 can be converted into illuminance using the dimming rate of the luminaire 1 and the reference illuminance value. it can. Therefore, the dimming rate calculation unit 19 of the lighting controller 3 calculates the contribution of illumination light in the current illuminance value from the reference dimming rate, the reference illuminance value, and the current dimming rate of the lighting fixture 1. Then, the dimming rate calculation unit 19 calculates the contribution of daylight in the current illuminance value by subtracting the contribution of illumination light from the current illuminance value.

例えば、基準調光率５０％で発光する照明器具１で照明したときの基準照度値が５００ｌｘであったとする。基準照度値とは、基準調光率で発光する照明器具１で照明したときに照度センサ２により測定された照度である。この場合、照明器具１を現在調光率３０％で発光させると、現在照度値における照明光の寄与分は３００ｌｘとなる。照度センサ２が測定した現在照度値が６００ｌｘであるとすると、昼光の寄与分は３００ｌｘとなる。しかし、目標照度値から昼光の寄与分３００ｌｘを差し引いた照度値を得るように照明器具１を発光させると、得られる照度は暗くなる。これは、現在照度値における昼光の寄与分を照度センサ２が過大に測定しているためと考えられる。   For example, it is assumed that the reference illuminance value when illuminated by the lighting fixture 1 that emits light at a reference dimming rate of 50% is 500 lx. The reference illuminance value is the illuminance measured by the illuminance sensor 2 when illuminated by the luminaire 1 that emits light at the reference dimming rate. In this case, if the lighting fixture 1 is caused to emit light at a current dimming rate of 30%, the contribution of illumination light to the current illuminance value is 300 lx. Assuming that the current illuminance value measured by the illuminance sensor 2 is 600 lx, the contribution of daylight is 300 lx. However, when the luminaire 1 is caused to emit light so as to obtain an illuminance value obtained by subtracting the contribution of daylight from the target illuminance value, the illuminance obtained is darkened. This is thought to be because the illuminance sensor 2 measures the contribution of daylight in the current illuminance value excessively.

そこで、調光率算出部１９は、昼光の寄与分に昼光補正値をかけて昼光補正照度値を算出する昼光補正を行う。昼光補正値は、昼光が入射する窓からの照度センサ２の距離、窓の高さ及び取り付け位置に基づいて決定されている。調光率算出部１９は、目標照度値から昼光補正照度値を差し引いた照度値を得るように照明器具１を発光させる調光率を算出する。調光率送信部２０は、この算出した調光率を照明器具１へ送信する。このようにして照明コントローラ３は算出した調光率になるように照明器具１を制御する。   Therefore, the dimming rate calculation unit 19 performs daylight correction for calculating the daylight correction illuminance value by multiplying the contribution of daylight by the daylight correction value. The daylight correction value is determined based on the distance of the illuminance sensor 2 from the window on which daylight enters, the height of the window, and the mounting position. The dimming rate calculation unit 19 calculates a dimming rate for causing the lighting fixture 1 to emit light so as to obtain an illuminance value obtained by subtracting the daylight correction illuminance value from the target illuminance value. The dimming rate transmission unit 20 transmits the calculated dimming rate to the lighting fixture 1. In this way, the lighting controller 3 controls the lighting fixture 1 so as to achieve the calculated dimming rate.

複数の照明器具１と複数の照度センサ端末器１２が照明コントローラに接続されている場合、それらの個別アドレスを複数のグループに割り付ける。照明コントローラ３は、複数の照度センサ２からそれぞれ現在照度値を集計し、グループごとに昼光補正を行って複数の照明器具１を制御する。なお、照明コントローラ３は、複数の照度センサ２から入力した現在照度値をグループごとに平均化処理してもよい。   When a plurality of lighting fixtures 1 and a plurality of illuminance sensor terminals 12 are connected to the lighting controller, their individual addresses are assigned to a plurality of groups. The lighting controller 3 totals the current illuminance values from the plurality of illuminance sensors 2, performs daylight correction for each group, and controls the plurality of luminaires 1. The illumination controller 3 may average the current illuminance values input from the plurality of illuminance sensors 2 for each group.

以上説明したように、照明コントローラ３は、照明器具１の基準調光率と基準照度値と現在調光率から現在照度値における照明光の寄与分を算出し、現在照度値から照明光の寄与分を差し引いて現在照度値における昼光の寄与分を算出し、昼光の寄与分に昼光補正値をかけて昼光補正照度値を算出する昼光補正を行い、目標照度値から昼光補正照度値を差し引いた照度値を得るように照明器具１を発光させる調光率を算出し、算出した調光率になるように照明器具１を制御する。このような昼光補正を行うことで照度センサ２の検出範囲の実際の明るさを一定にすることができる。   As described above, the lighting controller 3 calculates the contribution of the illumination light in the current illuminance value from the reference dimming rate, the reference illuminance value, and the current dimming rate of the luminaire 1, and the contribution of the illumination light from the current illuminance value. Subtract the minutes to calculate the contribution of daylight to the current illuminance value, apply the daylight correction value to the contribution of daylight to calculate the daylight correction illuminance value, and perform daylight correction from the target illuminance value. A dimming rate for causing the luminaire 1 to emit light is obtained so as to obtain an illuminance value obtained by subtracting the corrected illuminance value, and the luminaire 1 is controlled so that the calculated dimming rate is obtained. By performing such daylight correction, the actual brightness of the detection range of the illuminance sensor 2 can be made constant.

図８は、昼光補正の前後を説明するための図である。棒グラフは現在照度値における照明光と昼光の寄与分を示している。設定時は、昼光が無く、照度センサ２の感度を設定している状態である。照明制御システムは昼光の変化に応じて現在調光率を１０％から７０％の範囲で変化させている。昼光補正前には、照度センサ２の電圧のみに基づいて目標照度値を得るように照明器具１が制御される。しかし、現在照度値における昼光の寄与分を照度センサ２が過大に測定して照明器具１の調光率を低く設定してしまい、照度センサ２の検出範囲の実際の明るさは一定にならない。一方、昼光補正を行うことで、昼光の変化に関わらず実際の明るさをほぼ一定の目標照度値にすることができる。即ち、昼光補正値は、昼光の変化に関わらず照明制御システムが照度センサ２の検出範囲の実際の明るさをほぼ一定の目標照度値に制御できるような値に設定されている。   FIG. 8 is a diagram for explaining before and after daylight correction. The bar graph shows the contribution of illumination light and daylight in the current illuminance value. At the time of setting, there is no daylight and the sensitivity of the illuminance sensor 2 is set. The lighting control system changes the current dimming rate in the range of 10% to 70% according to changes in daylight. Before daylight correction, the luminaire 1 is controlled to obtain the target illuminance value based only on the voltage of the illuminance sensor 2. However, the illuminance sensor 2 excessively measures the contribution of daylight in the current illuminance value to set the dimming rate of the luminaire 1 low, and the actual brightness of the detection range of the illuminance sensor 2 is not constant. . On the other hand, by performing daylight correction, the actual brightness can be set to a substantially constant target illuminance value regardless of changes in daylight. That is, the daylight correction value is set to a value that allows the illumination control system to control the actual brightness of the detection range of the illuminance sensor 2 to a substantially constant target illuminance value regardless of changes in daylight.

なお、照明コントローラ３は、設定・操作用の通信機能を有する。照度センサ２は感度設定機能を有する。複数の照明コントローラ３を互いに接続して照明制御システムを構成してもよい。照明制御システムは、中央装置を親機、照明コントローラ３を子機とした集中型システムでもよいし、親機無しの分散型システムでもよい。照明コントローラ３は、照度センサ２から定期的に現在照度値を収集し、その合間に収集結果に基づいて対象の照明器具１を制御する。照明コントローラ３が現在照度値を収集する周期はパーソナルコンピュータにより設定可能である。照明コントローラ３は、照度センサ２の台数に応じて収集時間を変更する機能を有する。また、照度センサ端末器１２のマイコン１６は、基準調光率と基準照度値から照度センサ２の感度を設定する感度設定機能を有する。この感度設定を実施した際の基準調光率と基準照度値を用いて照明コントローラ３は昼光補正を行う。   The illumination controller 3 has a communication function for setting / operation. The illuminance sensor 2 has a sensitivity setting function. A plurality of lighting controllers 3 may be connected to each other to constitute a lighting control system. The lighting control system may be a centralized system in which the central device is a parent device and the lighting controller 3 is a child device, or may be a distributed system without a parent device. The illumination controller 3 periodically collects the current illuminance value from the illuminance sensor 2, and controls the target luminaire 1 based on the collection result in the meantime. The period in which the illumination controller 3 collects the current illuminance value can be set by a personal computer. The illumination controller 3 has a function of changing the collection time according to the number of illuminance sensors 2. Further, the microcomputer 16 of the illuminance sensor terminal 12 has a sensitivity setting function for setting the sensitivity of the illuminance sensor 2 from the reference dimming rate and the reference illuminance value. The illumination controller 3 performs daylight correction using the reference dimming rate and the reference illuminance value when this sensitivity setting is performed.

１ 照明器具、２ 照度センサ、３ 照明コントローラ、４ 調光信号出力回路、５ 第１の通信回路、１２ 照度センサ端末器 DESCRIPTION OF SYMBOLS 1 Lighting fixture, 2 Illuminance sensor, 3 Illumination controller, 4 Dimming signal output circuit, 5 1st communication circuit, 12 Illuminance sensor terminal device

Claims (9)

照明器具の照明光と昼光が重なった光が検出範囲面で反射した反射光の現在照度値を検出する照度センサと、
前記照明器具の基準調光率と基準照度値と現在調光率から前記現在照度値における前記照明光の寄与分を算出し、前記現在照度値から前記照明光の寄与分を差し引いて前記現在照度値における前記昼光の寄与分を算出し、前記昼光の寄与分に昼光補正値をかけて昼光補正照度値を算出する昼光補正を行い、目標照度値から前記昼光補正照度値を差し引いた照度値を得るように前記照明器具を発光させる調光率を算出し、算出した調光率になるように前記照明器具を制御する照明コントローラとを備えることを特徴とする照明制御システム。 An illuminance sensor that detects the current illuminance value of the reflected light that is reflected from the detection range surface by the light that overlaps the illumination light of the luminaire and daylight, and
Calculate the contribution of the illumination light in the current illuminance value from the reference dimming rate, reference illuminance value, and current dimming rate of the lighting fixture, and subtract the contribution of the illumination light from the current illuminance value to obtain the current illuminance The daylight correction is calculated by calculating the daylight contribution in the value, the daylight correction value is calculated by multiplying the daylight contribution by the daylight correction value, and the daylight correction illuminance value is calculated from the target illuminance value. An illumination controller that calculates a dimming rate for causing the lighting fixture to emit light so as to obtain an illuminance value obtained by subtracting the illuminance value, and controls the lighting fixture to obtain the calculated dimming rate. . 前記昼光補正値は、前記昼光の変化に関わらず前記照明制御システムが前記照度センサの検出範囲の実際の明るさを一定に制御できるような値に設定されていることを特徴とする請求項１に記載の照明制御システム。   The daylight correction value is set to a value that allows the illumination control system to control the actual brightness of the detection range of the illuminance sensor to be constant regardless of changes in the daylight. Item 2. The lighting control system according to Item 1. 前記昼光補正値は、前記昼光が入射する窓からの前記照度センサの距離、前記窓の高さ及び取り付け位置に基づいて決定されていることを特徴とする請求項２に記載の照明制御システム。   The illumination control according to claim 2, wherein the daylight correction value is determined based on a distance of the illuminance sensor from a window on which the daylight enters, a height of the window, and a mounting position. system. 前記照明コントローラは、調光信号線を介して前記照明器具へＰＷＭ信号にて調光率の指示を行う調光信号出力回路を有することを特徴とする請求項１〜３の何れか１項に記載の照明制御システム。   The said illumination controller has a dimming signal output circuit which instruct | indicates the dimming rate with a PWM signal to the said lighting fixture via a dimming signal line, The any one of Claims 1-3 characterized by the above-mentioned. The lighting control system described. 前記照明コントローラは、有線の通信線又は無線を介して前記照明器具へ電文にて調光率の指示を行う通信回路を有することを特徴とする請求項１〜３の何れか１項に記載の照明制御システム。   The said lighting controller has a communication circuit which instruct | indicates the light control rate with a message | telegram to the said lighting fixture via a wired communication line or radio | wireless, The any one of Claims 1-3 characterized by the above-mentioned. Lighting control system. 前記照度センサは前記照明コントローラに内蔵されていることを特徴とする請求項１〜５の何れか１項に記載の照明制御システム。   The illumination control system according to claim 1, wherein the illuminance sensor is built in the illumination controller. 前記照明コントローラに接続された照度センサ端末器を更に備え、
前記照度センサ端末器が前記照度センサを有し、
前記照明コントローラは、前記照度センサ端末器へ電文にて前記現在照度値を要求し、前記照度センサ端末器から電文にて送られてきた前記現在照度値を受信することを特徴とする請求項１〜５の何れか１項に記載の照明制御システム。 Further comprising an illuminance sensor terminal connected to the lighting controller;
The illuminance sensor terminal has the illuminance sensor,
2. The illumination controller requests the current illuminance value from the illuminance sensor terminal by a message, and receives the current illuminance value sent from the illuminance sensor terminal by a message. The illumination control system according to any one of? 複数の前記照明器具と複数の前記照度センサが前記照明コントローラに接続され、
前記複数の照明器具と前記複数の照度センサの個別アドレスを複数のグループに割り付け、
前記照明コントローラは、前記複数の照度センサからそれぞれ前記現在照度値を集計し、グループごとに前記昼光補正を行って前記複数の照明器具を制御することを特徴とする請求項７に記載の照明制御システム。 A plurality of the lighting fixtures and a plurality of the illuminance sensors are connected to the lighting controller;
Assigning individual addresses of the plurality of lighting fixtures and the plurality of illuminance sensors to a plurality of groups,
The lighting controller according to claim 7, wherein the lighting controller totals the current illuminance values from the plurality of illuminance sensors, and controls the plurality of lighting fixtures by performing the daylight correction for each group. Control system. 前記照明コントローラは、前記複数の照度センサから入力した前記現在照度値をグループごとに平均化処理することを特徴とする請求項８に記載の照明制御システム。   The illumination control system according to claim 8, wherein the illumination controller averages the current illuminance values input from the plurality of illuminance sensors for each group.
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