JP3709788B2 - System for predicting spatial distribution of radiation noise from lighting equipment, program thereof, and medium recording the program - Google Patents

Description

【００１２】
ただし、ω＝２πｆ（ｆは周波数）、β₀ は定数、ｊは虚数単位である。
【００１３】
しかして、照明器具から放射される電磁波について数１を適用するには、照明器具について磁気モーメントを決定すればよいことになる。ここに、照明器具からの電磁波の放射のシミュレーションを行うことを想定しており、照明器具は製品として仕様が確定しているものであるから、磁気モーメントは製品仕様によって規定することができる。たとえば、直管型の２灯の蛍光ランプを平行に配置し、かつ両蛍光ランプを直列接続して点灯させる形式の照明器具であれば、両蛍光ランプの一端間に放電灯点灯装置の出力端が接続され、両蛍光ランプの他端間が電気的に接続されることになる。したがって、ランプ電流は両蛍光ランプをループ状に流れることになり、このループの面積を数１におけるｄＳに当てはめ、ランプ電流を数１におけるフェーザ電流＜Ｉ＞に当てはめることができる。片口金の蛍光ランプや円環状の蛍光ランプにおいてもランプ電流がループ状に流れるから数１を適用することができる。なお、放電灯点灯装置は、一般にシールドケース内に収納されるから、放電灯点灯装置から外部に放射される電磁波は少なく、照明器具から放射される電磁波としてはランプおよび放電灯点灯装置とランプとの間のランプ線を考慮すればよいと言える。
【００１４】
ところで、数１から明らかなように、電界強度＜Ｅφ＞は位置（ｒ，θ，φ）および周波数ｆを特定しなければ決定することができない。一方、照明器具から放射される電磁波の空間分布として重要であるのは、照明器具が設置されている面から所定距離に位置する平面上での分布であって、照明器具は一般に天井面に配置されるから、天井面から処理距離の平面上での電磁波の強度についての空間分布を求めることが重要である。そこで、本実施形態では、照明器具の配置位置と、照明器具を設置している面から電磁波の強度を観測する平面までの距離と、観測する周波数ｆとを使用者が与えることにより、与えられた平面上の複数の観測位置（ｒ，θ，φ）で周波数ｆの電磁波の強度を数１によって求めるようにしてある。
【００１５】
さらに、本実施形態ではオフィス空間のように同仕様の複数の照明器具を規則的に配列していることを想定しており、各観測位置において各照明器具にそれぞれ数１を適用して求めた電磁波の強度を合成することによって、各観測位置での電磁波の強度を求めるようにしてある。ただし、複数の照明器具から放射される電磁波の強度を演算のみによって合成しても誤差が大きくなるから、各観測位置にもっとも近い１個の照明器具のみについて求めた電磁波の強度（つまり、各観測位置において各照明器具についてそれぞれ求めた電磁波の強度の最大値）に対して、合成した強度が規定値を超えるときには、実測値から求めた補正値により電磁波の強度を補正する。つまり、照明器具を各種条件で実際に設置したときの実測値をデータベース１３に蓄積しておき、必要に応じてデータベース１３を参照できるようにしてある。たとえば、２個の照明器具について電磁波の強度を合成したときに１個の照明器具での電磁波の強度に対して１ｄＢを超える変化が生じる場合、あるいは３個の照明器具について電磁波の強度を合成したときに１個の照明器具での電磁波の強度に対して８ｄＢを超える変化が生じる場合には、データベース１３に格納されている既知の実測値の中から、照明器具の仕様や配列のような前提となる条件が比較的近い実測値を選択し、数１を用いて求めた理論値に対して実測値に基づいた補正を加える。
【００１６】
照明器具の仕様にもよるが、本発明者らの実験によれば、２個の照明器具を横方向に連設したときの増加分は６ｄＢであり、縦方向に連設したときの増加分は１ｄＢであった。また、３個の照明器具を横方向に連設したときの増加分は８ｄＢであった。
【００１７】
以下では、本実施形態の構成および処理手順をさらに具体的に説明する。本実施形態は、制御理論の研究用に近年用いられている数値計算ツールを搭載したパーソナルコンピュータのようなコンピュータ装置を用いて実現されている。この数値計算ツールにより、図１に示すように、数１の演算を行う演算部１０ａと、演算部１０ａでの演算結果をＣＲＴのような表示装置１１にグラフ化して表示する視覚化部１０ｂとが実現される。上述したように数１の演算には、照明器具の配置と、観測位置（ｒ，θ，φ）を含む平面と、観測する周波数ｆとが必要であるから、これらの情報を入力するための入力装置１２も設けられる。
【００１８】
入力装置１２は、表示装置１１の画面上に図２に示す画面を表示して使用者に必要な情報の入力を促す。図示する画面の構成例は、直管型の２灯の蛍光ランプを平行に並べて配置しかつ両蛍光ランプを直列接続した複数の照明器具を天井面に規則的に配列している場合について、必要な情報を入力させるために設定されている。つまり、天井面には蛍光ランプの長手方向において中心線を一致させた形で照明器具を配列し、また蛍光ランプの幅方向において中心線を一致させた形で照明器具を配列しているものとする。要するに、照明器具はマトリクス状に配列されていることになる。以下では、蛍光ランプの長手方向を縦方向、幅方向を横方向として説明する。また、照明器具は縦方向および横方向において、それぞれ等間隔に配列されているものとする。このような構成は単純ではあるが、オフィス空間においては広く採用されている配置である。
【００１９】
上述した条件下において、電磁波の空間分布に関するシミュレーションを行おうとする使用者が演算部１０ａに与える条件としては、横方向および縦方向における照明器具の台数、横方向および縦方向における照明器具の配置間隔、電磁波の強度を観測する平面上での縦方向および横方向における観測位置の数、照明器具を配置した面（一般に天井面）からの観測位置までの距離、照明器具の仕様であるランプ電流および磁気モーメントを求めるためのループの面積、観測する周波数の１０種類の条件になる。つまり、図２に示す画面には、これらの１０種類の条件を入力するためのフィールドＦ１〜Ｆ１０がそれぞれ設けられる。なお、ランプ電流およびループの面積は照明器具の仕様によって決まるから、照明器具の品番と照明器具の仕様に応じた磁気モーメントとを対応付けたデータをデータベース１３に登録しておき、照明器具の品番を入力装置１２から与え、データベース１３を参照することによって照明器具の品番から磁気モーメントを求めるようにしてもよい。これらの条件を図２に示す画面を通して入力した後、図２に示す画面上に設けられた「実行」の釦Ｂ１を押す（たとえばマウスを用いてポインタを合わせクリックする）ことにより、演算部１０ａに必要なデータが与えられ、数１を適用するとともに、複数の照明器具についてそれぞれ求めた各観測位置での電磁波の強度が合成され、さらに必要に応じて合成値が補正されることによって、各観測位置での電磁波の強度が得られる。なお、各観測位置は、照明器具を配置した天井面から指定した距離に位置する平面であって天井面において照明器具が占有する領域の直下の平面上に等間隔で設定される。また、横方向および縦方向における観測位置の個数は上述したように図２の画面でフィールドＦ５，Ｆ６に入力される数値で決定される。
【００２０】
演算部１０ａでの演算結果は、表示装置１１に数値で表示したのではわかりにくいから、視覚化部１０ｂにおいて３次元グラフ化され表示装置１１に表示される。つまり、各観測位置での電磁波の強度が３次元グラフ化され、表示装置１１には図３のような画面が表示される。図３において縦軸は電磁波の強度（放射ノイズレベル）を示している。図３に示すような３次元グラフを用いて電磁波の空間分布を表示装置１１に表示することにより、電磁波の分布の状態を直感的に把握することが可能になる。このように照明器具から放射される電磁波の空間分布を直感的に把握できるようにしていることによって、電磁波を考慮した照明器具の配置設計を支援するのはもちろんのこと、照明器具の施工や販売の際の営業活動において、照明器具の配置に伴う電磁波の影響について顧客から質問を受けたとしても即時に視覚的に示すことができ、顧客に信頼感を与えることができる。すなわち、営業活動を支援することが可能になる。
【００２１】
【発明の効果】
請求項１の発明は、少なくとも照明器具の仕様と照明器具の配置と観測位置とを指定する入力装置と、照明器具を微小磁気ダイポールとみなす電磁放射のモデルを用い入力装置で指定された照明器具の仕様に対応する磁気モーメントから観測位置における電磁波の強度を求める演算部と、演算部による演算結果を表示する表示装置とを備えるものであり、比較的簡単なモデルを用いて照明器具から放射される電磁波の強度を予測することができるから、照明器具を実際に施工していない状態で照明器具から放射される電磁波の強度の空間分布の傾向を知ることができ、電磁波による人体や機器への影響を考慮した照明器具の配置設計が可能になる。
【００２２】
請求項２の発明は、請求項１の発明において、前記照明器具を微小磁気ダイポールとみなすときの磁気モーメントを照明器具の品番に対応付けて登録したデータベースを設け、前記入力装置では照明器具の品番の入力が可能であって、照明器具の品番が入力装置から入力されるとデータベースを参照して照明器具の仕様に対応する磁気モーメントが求められ、この磁気モーメントを演算部において電磁波の強度を求める演算に適用するものであり、入力装置から照明器具の仕様を入力しなくとも照明器具の品番を入力すれば、その照明器具に対応した磁気モーメントを演算部に与えることができるから、入力装置からの入力作業の手間を省くことができる。
【００２３】
請求項３の発明は、請求項１または請求項２の発明において、前記演算部では、前記照明器具が複数配列されているときに前記観測位置において各照明器具ごとに求めた電磁波の強度のうちの最大値と、前記観測位置においてすべての照明器具について電磁波の強度を合成した値との差が規定値を超えるときに、あらかじめ実測により得られている補正値を用いて前記最大値を補正した値を前記観測位置における電磁波の強度とするものであり、照明器具が複数配列されており、各観測位置では各照明器具から放射される電磁波が合成されることによって各観測位置での電磁波の強度を理論値として求めるのが困難な場合に、実測値を考慮した補正を行うことによって理論値から比較的簡単に実測値に近い値を得ることが可能になる。
【００２４】
請求項４の発明は、請求項１ないし請求項３の発明において、前記演算部で求めた観測位置における電磁波の強度を前記表示装置に３次元グラフにより表示させる視覚化部を備えるものであり、電磁波の分布強度を視覚で直感的に捉えることができる。
【図面の簡単な説明】
【図１】本発明の実施の形態を示すブロック図である。
【図２】同上における入力画面を示す図である。
【図３】同上における表示例を示す図である。
【符号の説明】
１０ａ 演算部
１０ｂ 視覚化部
１１ 表示装置
１２ 入力装置
１３ データベース[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a radiation noise spatial distribution prediction system from a lighting fixture, a program thereof, and a medium on which the program is recorded.
[0002]
[Prior art]
In recent years, lighting fixtures that use an inverter circuit to turn on a fluorescent lamp at a high frequency have become widespread. In this type of lighting fixture, it is known that a high frequency generated by switching of a switching element is radiated as electromagnetic waves to the surrounding space. ing. On the other hand, the influence of electromagnetic waves on the human body and various devices has become a problem recently, and it has become necessary to know the spatial distribution of electromagnetic waves radiated from lighting fixtures even in the space where the lighting fixtures are installed. Yes. As a method for knowing the spatial distribution of such electromagnetic waves, actual measurement is the only technique at present.
[0003]
[Problems to be solved by the invention]
By the way, although it is possible to know the spatial distribution accurately by actually measuring the electromagnetic waves radiated from the lighting fixtures, the spatial distribution of electromagnetic waves can only be measured after the lighting fixtures are installed. There is a problem that it is impossible to design the arrangement of lighting fixtures in consideration of the above. In other words, even if there is an inconvenience in the spatial distribution of electromagnetic waves after the construction of the lighting fixtures, it is not easy to change the arrangement of the lighting fixtures, and thus it is currently impossible to take fundamental measures.
[0004]
The present invention has been made in view of the above reasons, and its purpose is to predict in advance the spatial distribution of electromagnetic waves radiated from the lighting fixtures before construction of the lighting fixtures, thereby affecting the human body and equipment due to the electromagnetic waves. It is an object of the present invention to provide a radiation noise spatial distribution prediction system for a luminaire that allows layout design of the luminaire in consideration of the above, a program thereof, and a medium recording the program.
[0005]
[Means for Solving the Problems]
According to the first aspect of the present invention, there is provided an input device that designates at least a specification of the lighting fixture, an arrangement of the lighting fixture, and an observation position, and a lighting fixture specified by the input device using a model of electromagnetic radiation in which the lighting fixture is regarded as a minute magnetic dipole. The calculation part which calculates | requires the intensity | strength of the electromagnetic wave in an observation position from the magnetic moment corresponding to this specification, and the display apparatus which displays the calculation result by a calculation part are provided. According to this configuration, the intensity of the electromagnetic wave radiated from the lighting fixture can be predicted using a relatively simple model. Therefore, the electromagnetic wave radiated from the lighting fixture can be predicted without actually installing the lighting fixture. It is possible to know the tendency of the spatial distribution of the intensity, and it becomes possible to design the arrangement of the luminaire considering the influence of electromagnetic waves on the human body and equipment.
[0006]
According to a second aspect of the present invention, in the first aspect of the invention, a database is provided in which the magnetic moment when the luminaire is regarded as a minute magnetic dipole is registered in association with the product number of the luminaire. When the product number of the lighting fixture is input from the input device, a magnetic moment corresponding to the specification of the lighting fixture is obtained with reference to the database, and the magnetic moment is obtained from the magnetic moment in the calculation unit. Applies to calculation. According to this configuration, if the part number of the lighting fixture is input without inputting the specification of the lighting fixture from the input device, the magnetic moment corresponding to the lighting fixture can be given to the calculation unit. The work can be saved.
[0007]
According to a third aspect of the present invention, in the first or second aspect of the present invention, in the calculation unit, among the intensity of electromagnetic waves obtained for each lighting fixture at the observation position when a plurality of the lighting fixtures are arranged. When the difference between the maximum value of the above and the value obtained by combining the electromagnetic wave intensities for all lighting fixtures at the observation position exceeds a specified value, the maximum value was corrected using a correction value obtained in advance by actual measurement. The value is the intensity of the electromagnetic wave at the observation position. According to this configuration, a plurality of lighting fixtures are arranged, and it is difficult to obtain the intensity of the electromagnetic waves at each observation position as a theoretical value by combining the electromagnetic waves radiated from each lighting fixture at each observation location. In this case, it is possible to relatively easily obtain a value close to the actual measurement value from the theoretical value by performing correction in consideration of the actual measurement value.
[0008]
According to a fourth aspect of the present invention, in the first to third aspects of the present invention, a visualization unit is provided that causes the display device to display the intensity of the electromagnetic wave at the observation position obtained by the calculation unit on a three-dimensional graph. According to this configuration, the distribution intensity of electromagnetic waves can be grasped visually and intuitively.
[0009]
The invention of claim 5 is a program for causing a computer to execute a system for predicting a spatial distribution of radiated noise from a lighting fixture according to any one of claims 1 to 4, and the invention of claim 6 A medium in which the program according to claim 5 is recorded.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
In the present embodiment, a spatial distribution of electromagnetic waves radiated from a lighting apparatus is predicted by simulation using a model described below. In general, a magnetic moment is widely used when theoretically considering a radiated electromagnetic field. That is, when a phasor current <I> flows around a small area dS in the xy plane (<I> means that the current I changes with time), the magnetic moment (small magnetic dipole moment) <dm> is <dm> = <I> dS, and the electric field strength <Eφ> at the position (r, θ, φ) in the spherical coordinate system with the origin of the center of the small area dS described above is It is known to be represented.
[0011]
[Expression 1]

[0012]
However, ω = 2πf (f is a frequency), β ₀ is a constant, and j is an imaginary unit.
[0013]
Therefore, in order to apply Equation 1 for the electromagnetic waves radiated from the lighting fixture, it is only necessary to determine the magnetic moment for the lighting fixture. Here, it is assumed that a simulation of the radiation of electromagnetic waves from the lighting fixture is performed. Since the specification of the lighting fixture is determined as a product, the magnetic moment can be defined by the product specification. For example, if the lighting fixture is of a type in which two fluorescent lamps of straight tube type are arranged in parallel and both fluorescent lamps are connected in series, the output terminal of the discharge lamp lighting device is connected between one end of both fluorescent lamps. Are connected, and the other ends of both fluorescent lamps are electrically connected. Therefore, the lamp current flows through both fluorescent lamps in a loop shape, and the area of this loop can be applied to dS in Equation 1, and the lamp current can be applied to phasor current <I> in Equation 1. Since the lamp current flows in a loop shape even in a single-piece fluorescent lamp or an annular fluorescent lamp, Equation 1 can be applied. Since the discharge lamp lighting device is generally housed in a shield case, there are few electromagnetic waves radiated from the discharge lamp lighting device to the outside, and as the electromagnetic waves radiated from the lighting fixture, the lamp, the discharge lamp lighting device and the lamp It can be said that it is sufficient to consider the ramp line between.
[0014]
As is clear from Equation 1, the electric field strength <Eφ> cannot be determined unless the position (r, θ, φ) and the frequency f are specified. On the other hand, what is important as the spatial distribution of electromagnetic waves radiated from a lighting fixture is a distribution on a plane located at a predetermined distance from the surface where the lighting fixture is installed, and the lighting fixture is generally arranged on the ceiling surface. Therefore, it is important to obtain the spatial distribution of the electromagnetic wave intensity on the plane of the processing distance from the ceiling surface. Therefore, in the present embodiment, the user is given the arrangement position of the luminaire, the distance from the surface where the luminaire is installed to the plane where the intensity of the electromagnetic wave is observed, and the frequency f to be observed. The intensity of the electromagnetic wave having the frequency f at a plurality of observation positions (r, θ, φ) on the flat plane is obtained by Equation (1).
[0015]
Furthermore, in the present embodiment, it is assumed that a plurality of lighting fixtures having the same specifications are regularly arranged as in an office space, and the number 1 is obtained by applying Equation 1 to each lighting fixture at each observation position. By synthesizing the intensity of the electromagnetic wave, the intensity of the electromagnetic wave at each observation position is obtained. However, even if the intensity of electromagnetic waves radiated from a plurality of lighting fixtures is synthesized only by calculation, the error becomes large. Therefore, the intensity of the electromagnetic waves obtained for only one lighting fixture closest to each observation position (that is, each observation) When the combined intensity exceeds a specified value with respect to the maximum value of the intensity of the electromagnetic wave obtained for each lighting fixture at the position, the intensity of the electromagnetic wave is corrected by the correction value obtained from the actual measurement value. That is, measured values when the lighting fixtures are actually installed under various conditions are stored in the database 13 so that the database 13 can be referred to as necessary. For example, when the intensity of electromagnetic waves is synthesized for two lighting fixtures, a change exceeding 1 dB occurs with respect to the electromagnetic wave strength of one lighting fixture, or the strength of electromagnetic waves is synthesized for three lighting fixtures. Sometimes, when a change exceeding 8 dB occurs with respect to the electromagnetic wave intensity of one lighting fixture, the assumptions such as the specifications and arrangement of the lighting fixtures are taken out of the known measured values stored in the database 13. An actually measured value that is relatively close to the condition is selected, and a correction based on the actually measured value is added to the theoretical value obtained using Equation 1.
[0016]
Although it depends on the specifications of the lighting fixtures, according to the experiments by the present inventors, the increase when two lighting fixtures are connected in the horizontal direction is 6 dB, and the increase when the lighting fixtures are connected in the vertical direction. Was 1 dB. Further, the increase when three lighting fixtures were arranged in the horizontal direction was 8 dB.
[0017]
Hereinafter, the configuration and processing procedure of the present embodiment will be described more specifically. The present embodiment is realized by using a computer device such as a personal computer equipped with a numerical calculation tool used in recent years for research of control theory. With this numerical calculation tool, as shown in FIG. 1, a calculation unit 10a that performs the calculation of Equation 1, and a visualization unit 10b that displays the calculation result in the calculation unit 10a in a graph on a display device 11 such as a CRT. Is realized. As described above, the calculation of Equation 1 requires the arrangement of lighting fixtures, the plane including the observation position (r, θ, φ), and the frequency f to be observed. An input device 12 is also provided.
[0018]
The input device 12 displays the screen shown in FIG. 2 on the screen of the display device 11 and prompts the user to input necessary information. The configuration example of the screen shown in the figure is necessary when two straight fluorescent lamps are arranged in parallel and a plurality of lighting fixtures in which both fluorescent lamps are connected in series are regularly arranged on the ceiling surface. It is set to input various information. In other words, the lighting fixtures are arranged on the ceiling surface so that the center lines are aligned in the longitudinal direction of the fluorescent lamp, and the lighting fixtures are arranged in such a manner that the center lines are aligned in the width direction of the fluorescent lamp. To do. In short, the lighting fixtures are arranged in a matrix. Below, the longitudinal direction of a fluorescent lamp is demonstrated as a vertical direction, and the width direction is demonstrated as a horizontal direction. In addition, the lighting fixtures are arranged at equal intervals in the vertical direction and the horizontal direction. Although such a configuration is simple, it is an arrangement widely used in office spaces.
[0019]
Under the conditions described above, the conditions given to the calculation unit 10a by the user who wants to perform a simulation regarding the spatial distribution of electromagnetic waves include the number of lighting fixtures in the horizontal and vertical directions, and the arrangement intervals of the lighting fixtures in the horizontal and vertical directions. , The number of observation positions in the vertical and horizontal directions on the plane where the intensity of electromagnetic waves is observed, the distance from the surface (generally the ceiling surface) where the lighting fixture is placed to the observation location, the lamp current that is the specification of the lighting fixture, and There are 10 types of conditions: the area of the loop for obtaining the magnetic moment and the frequency to be observed. That is, the screen shown in FIG. 2 is provided with fields F1 to F10 for inputting these ten kinds of conditions. Since the lamp current and the area of the loop are determined by the specifications of the lighting fixture, data in which the product number of the lighting fixture is associated with the magnetic moment according to the specification of the lighting fixture is registered in the database 13 and the product number of the lighting fixture is stored. May be obtained from the input device 12 and the magnetic moment may be obtained from the product number of the luminaire by referring to the database 13. After these conditions are input through the screen shown in FIG. 2, the “execution” button B1 provided on the screen shown in FIG. 2 is pressed (for example, the pointer is clicked using a mouse and clicked), thereby calculating the arithmetic unit 10a. The necessary data is given, and the intensity of electromagnetic waves at each observation position obtained for each of a plurality of lighting fixtures is synthesized, and further, the synthesized value is corrected as necessary. The intensity of the electromagnetic wave at the observation position can be obtained. Each observation position is set at equal intervals on a plane located at a specified distance from the ceiling surface on which the luminaire is arranged and directly below the area occupied by the luminaire on the ceiling surface. Further, as described above, the number of observation positions in the horizontal direction and the vertical direction is determined by the numerical values input in the fields F5 and F6 on the screen of FIG.
[0020]
Since the calculation result in the calculation unit 10 a is difficult to understand if it is displayed as a numerical value on the display device 11, it is converted into a three-dimensional graph by the visualization unit 10 b and displayed on the display device 11. That is, the intensity of the electromagnetic wave at each observation position is made into a three-dimensional graph, and a screen as shown in FIG. In FIG. 3, the vertical axis represents the intensity of electromagnetic waves (radiation noise level). By displaying the spatial distribution of electromagnetic waves on the display device 11 using a three-dimensional graph as shown in FIG. 3, it is possible to intuitively grasp the state of electromagnetic wave distribution. In this way, by making it possible to intuitively understand the spatial distribution of electromagnetic waves radiated from lighting fixtures, as well as supporting the layout design of lighting fixtures considering electromagnetic waves, construction and sales of lighting fixtures In the sales activities at that time, even if a customer receives a question about the influence of electromagnetic waves associated with the arrangement of lighting fixtures, it can be immediately shown visually, giving the customer a sense of trust. That is, it becomes possible to support sales activities.
[0021]
【The invention's effect】
According to the first aspect of the present invention, there is provided an input device that designates at least a specification of the lighting fixture, an arrangement of the lighting fixture, and an observation position, and a lighting fixture specified by the input device using a model of electromagnetic radiation in which the lighting fixture is regarded as a minute magnetic dipole. It is equipped with a calculation unit that obtains the intensity of electromagnetic waves at the observation position from the magnetic moment corresponding to the specifications of the above, and a display device that displays the calculation result of the calculation unit, and is radiated from the lighting fixture using a relatively simple model Therefore, it is possible to know the tendency of the spatial distribution of the intensity of electromagnetic waves emitted from the lighting fixtures without actually installing the lighting fixtures. It is possible to design lighting fixtures in consideration of the influence.
[0022]
According to a second aspect of the present invention, in the first aspect of the invention, a database is provided in which the magnetic moment when the luminaire is regarded as a minute magnetic dipole is registered in association with the product number of the luminaire. When the product number of the lighting fixture is input from the input device, a magnetic moment corresponding to the specification of the lighting fixture is obtained with reference to the database, and the magnetic moment is obtained from the magnetic moment in the calculation unit. It is applied to the calculation, and if the part number of the lighting fixture is input without inputting the specification of the lighting fixture from the input device, the magnetic moment corresponding to the lighting fixture can be given to the calculation unit. Can be saved.
[0023]
According to a third aspect of the present invention, in the first or second aspect of the present invention, in the calculation unit, among the intensity of electromagnetic waves obtained for each lighting fixture at the observation position when a plurality of the lighting fixtures are arranged. When the difference between the maximum value of the above and the value obtained by combining the electromagnetic wave intensities for all lighting fixtures at the observation position exceeds a specified value, the maximum value was corrected using a correction value obtained in advance by actual measurement. The value is the intensity of the electromagnetic wave at the observation position, and a plurality of lighting fixtures are arranged. At each observation position, the electromagnetic wave radiated from each lighting fixture is synthesized, and the intensity of the electromagnetic waves at each observation location. When it is difficult to obtain the value as a theoretical value, it is possible to relatively easily obtain a value close to the actual measured value from the theoretical value by performing correction in consideration of the actual measured value.
[0024]
The invention of claim 4 is the invention of claim 1 to claim 3, further comprising a visualization unit that displays the intensity of the electromagnetic wave at the observation position obtained by the calculation unit on the display device in a three-dimensional graph, The distribution intensity of electromagnetic waves can be grasped visually and intuitively.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an embodiment of the present invention.
FIG. 2 is a diagram showing an input screen in the same as above.
FIG. 3 is a diagram showing a display example in the same as above.
[Explanation of symbols]
10a arithmetic unit 10b visualization unit 11 display device 12 input device 13 database

Claims (6)

An input device that specifies at least the specifications of the luminaire, the arrangement and observation position of the luminaire, and a magnetic moment that corresponds to the luminaire specifications specified by the input device using a model of electromagnetic radiation that regards the luminaire as a micromagnetic dipole A system for predicting a radiation noise spatial distribution from a lighting fixture, comprising: a calculation unit that obtains the intensity of an electromagnetic wave at an observation position from a display unit; and a display device that displays a calculation result of the calculation unit. A database in which the magnetic moment when the lighting fixture is regarded as a minute magnetic dipole is associated with the product number of the lighting fixture is provided, and the product number of the lighting fixture can be input in the input device. The magnetic moment corresponding to the specifications of the lighting fixture is obtained by referring to the database when inputted from the apparatus, and this magnetic moment is applied to the computation for obtaining the intensity of the electromagnetic wave in the computation unit. Radiation noise spatial distribution prediction system from lighting equipment. In the calculation unit, when a plurality of the lighting fixtures are arranged, the maximum value of the electromagnetic wave strengths obtained for each lighting fixture at the observation position, and the electromagnetic wave strengths for all the lighting fixtures at the observation location. The value obtained by correcting the maximum value using a correction value obtained in advance by actual measurement when the difference from the synthesized value exceeds a specified value is defined as the electromagnetic wave intensity at the observation position. A system for predicting a spatial distribution of radiation noise from a lighting fixture according to claim 1. The lighting apparatus according to any one of claims 1 to 3, further comprising a visualization unit that displays the intensity of the electromagnetic wave at the observation position obtained by the calculation unit on the display device in a three-dimensional graph. Radiated noise spatial distribution prediction system from The program for making a computer perform the radiation noise space distribution prediction system from the lighting fixture of any one of Claim 1 thru | or 4. A medium on which the program according to claim 5 is recorded.

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