JPH0547203A - Illumination calculating method and device thereof - Google Patents

Abstract

PURPOSE:To provide an illumination calculating device homogeneously executable within a short time regardless of the presence or absence of experiences and capable of sufficiently grasping the state of a fly ball. CONSTITUTION:The position, direction and number of lighting equipments provided on a ground are inputted with a keyboard 2 by use of X-, Y- and Z- coordinates. The data related to the ground such as the form of the ground and the reflectance of the ground in the X-, Y- and Z-coordinates and the observing point in which the observer forming a playing in the falling point of a ball is situated are inputted with the keyboard 2. According to kinds of balls, the orbit of the fly ball by the Z-, Y- and Z-coordinates on the ground is calculated by an arithmetic device 1. The hemispherical surface illuminance of the fly ball on an optional orbit seen from the observing point is calculated by the arithmetic device 1 according to the position and illuminating direction of the lighting equipments and the form and reflectance of the ground. The hemispherical surface illuminance Esc is displayed on a cathode-ray tube 3 and a plotter 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an illumination calculation method and apparatus for calculating the hemispherical illuminance of a flying ball on an arbitrary trajectory viewed from an arbitrary observation point of an illuminated portion.

[0002]

2. Description of the Related Art Conventionally, for example, in lighting calculation of a stadium, an experienced person refers to the knowledge and past construction / design examples, and the number of projectors and the points on the competition surface which are the illuminated fields to which each projector points. The illuminance distribution is calculated with the initial value of. Since the work of correcting the past construction / design examples by referring to the result and the result correction are repeated, a lot of labor and time are required.

Further, the shape of the stadium to be designed and the position of the lighting tower are not always the same as those in the past design / construction example, and in such a case, no experience is taken, especially for an inexperienced person. Such work is difficult and requires enormous effort and time.

[0004]

As described above, in the conventional lighting calculation of the stadium, the design result varies depending on the person who performs it and the degree of experience, and even an experienced person requires a lot of labor. It takes time, and it is difficult to design, especially for inexperienced people.

A device for calculating the horizontal plane illuminance distribution such as the ground and the evenness and outputting the result as an isoilluminance curve is also considered, but the isoilluminance curve sufficiently indicates the state of the flying ball on the orbit. It has a problem that cannot be understood.

The present invention has been made in view of the above problems, and provides an illumination calculation method and an apparatus therefor, which can be executed regardless of experience and can be executed in a short time and the state of a flying ball can be sufficiently grasped. The purpose is to

[0007]

An illumination calculation method according to claim 1 inputs a position and an irradiation direction of an illumination device, inputs a shape of an illuminated portion, and inputs an arbitrary observation point of the illuminated portion. Then, the trajectory of the flying ball located at this illuminated portion is input, and the hemispherical illuminance of the flying ball at the observation point is calculated according to the position and irradiation direction of the illuminating device.

An illumination calculation apparatus according to a second aspect of the present invention includes illumination apparatus input means for inputting a position and an irradiation direction of the illumination apparatus,
Illuminated portion input means for inputting the shape of the illuminated portion, observation point input means for inputting an arbitrary observation point of the illuminated portion, and trajectory input means for inputting the trajectory of a flying ball located in the illuminated portion. And a hemisphere of the flying ball on the parabolic trajectory input by the trajectory input means at the observation point input by the observation point input means according to the position and irradiation direction of the illumination device input by the illumination device input means And a calculation means for calculating the surface illuminance.

An illumination calculation device according to claim 3 is the illumination calculation device according to claim 2.
In the lighting calculation device described, the orbit is represented by a parabola,
A display means for displaying the target flying ball on the parabola is provided.

An illumination calculation device according to claim 4 is the illumination calculation device according to claim 2.
Alternatively, in the illumination calculation device described in the item 3, there is provided a display means for displaying the hemispherical illuminance of the flying ball in the size of the flying ball.

[0011]

According to the illumination calculation method of claim 1, the position and the irradiation direction of the illumination device are input, and the shape of the illuminated portion is input.
Enter any observation point of this illuminated part, enter the trajectory of the flying ball located in this illuminated part, and follow the position of the illuminator and the irradiation direction. Since the illuminance is calculated, it is possible to easily calculate the hemispherical illuminance of a flying ball on an arbitrary orbit viewed from the observation point in a short time, regardless of whether or not the user has experience.

According to a second aspect of the present invention, there is provided the illumination calculation device, which is a calculation means, and is a trajectory input means viewed from the observation point input by the observation point input means according to the position and irradiation direction of the illumination device input by the illumination device input means. Since the hemispherical illuminance of the flying ball of the input trajectory is calculated, the hemispherical illuminance of the flying ball at the observation point can be easily calculated in a short time, regardless of whether or not the user has experience.

The illumination calculation device according to claim 3 is the illumination calculation device according to claim 2.
In the lighting calculation device described above, since the orbit is represented by a parabola on the display means and the target flying ball is displayed on this parabola, it is possible to easily know the hemispherical illuminance of the flying ball on an arbitrary orbit viewed from the observation point. obtain.

The illumination calculation device according to claim 4 is the device according to claim 2.
Alternatively, in the illumination calculation device described in 3, since the hemispherical illuminance of the flying ball is displayed by the size of the flying ball on the display means, the hemispherical illuminance of the flying ball can be easily known by the size of the flying ball.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the illumination calculation device of the present invention will be described below with reference to the drawings.

In FIG. 2, 1 is a CP as a calculation means.
A computing device such as U. The computing device 1 is connected with a keyboard 2 having functions as illumination device input means, illuminated portion input means, observation point input means, and trajectory input means. Further, a cathode ray tube (CRT) 3 as a display unit and a plotter 4 as a display unit are connected to the arithmetic unit 1. In addition, in the arithmetic unit 1,
A storage device 4 such as a RAM is connected.

Next, the calculation operation will be described with reference to the flow chart shown in FIG.

First, the position of a lighting fixture such as a lighting tower provided on the ground, which is the baseball field, to be illuminated,
The direction, the number, etc. are input by the keyboard 2 using the X, Y and Z coordinates (step 1), and then the shape of the ground at the X, Y and Z coordinates, the ground related data such as the reflectance of the ground and the ball. The observation point where the observer who is the player of the drop point is located is entered using the keyboard 2 (step 2). Then, the orbit of the flying ball by the X, Y and Z coordinates on the ground is calculated by the arithmetic unit 1 according to the type of ball (step 3). At this time, data regarding the reflectance of the ball may be input.

The position of the luminaire and the irradiation direction,
The hemispherical illuminance of the flying ball at the observation point is calculated by the arithmetic unit 1 according to the shape of the ground, the reflectance, etc. (step 4). Here, as shown in FIG. 3, the hemispherical illuminance E _SC is the average illuminance of the surface of the hemisphere when divided at a point passing through the center of a microsphere placed at one point in space, and is expressed by the following formula. Desired.

E _SC = I (1 + cos γ) / (4d ² ), where I is the luminous intensity of the point light source S of the luminaire, d is the distance between the point light source S and the ball B, and γ is the ball seen from the observation point. It is the angle between the point light source S and the observation point via B.

Then, the hemispherical illuminance E _SC is displayed on the cathode ray tube 3 and the plotter 4 as shown in FIG. 4 (steps 5 and 6).

Further, at the time of this display, the shape of the ground is represented in a bird's-eye view, the trajectory of the flying parabola is shown by the broken line on this ground, and the desired flying ball is displayed on this trajectory.
Then, the size of the flying ball is increased as the hemispherical illuminance [lx] increases, and the hemispherical illuminance is displayed as a number near the flying ball.

Further, the calculated result may be stored in the storage device 5.

In the above-mentioned embodiment, the shape of the ground and the like are inputted after the position and the direction of the lighting equipment are inputted.
The position and orientation of the lighting fixture may be input after inputting the shape of the ground and the like.

Although the trajectory of the flying ball is calculated each time, a typical trajectory of the flying ball may be input in advance.

Further, the display by the plotter 4 may not be performed each time, but may be performed only when necessary.

Furthermore, it can be used not only in baseball fields but also in tennis courts, and also in indoor stadiums.

[0028]

According to the illumination calculation method of claim 1,
By inputting the position and irradiation direction of the lighting device, inputting the shape of the illuminated part, inputting an arbitrary observation point of this illuminated part, and inputting the trajectory of the flying ball located in this illuminated part, the lighting device Since the hemispherical illuminance of a flying ball on an arbitrary orbit viewed from the observation point is calculated according to the position and irradiation direction, a flying ball on an arbitrary orbit viewed from the observation point can be homogeneous and in a short time regardless of experience. The hemispherical illuminance of can be easily calculated.

According to the illumination calculation device of the second aspect, the calculation means determines an arbitrary point of view from the observation point input by the observation point input means according to the position and irradiation direction of the illumination device input by the illumination device input means. The hemispherical illuminance of the flight ball in the orbit entered by the on-orbit input means is calculated. Illuminance can be easily calculated.

According to the illumination calculation device of the third aspect, in addition to the illumination calculation device of the second aspect, the orbit is expressed in a parabolic shape by the display means, and the target flying ball is displayed on this parabola. , The hemispherical illuminance of a flying ball on an arbitrary orbit viewed from the observation point can be easily known.

According to the illumination calculation device of claim 4, in addition to the illumination calculation device of claim 2 or 3, the display means displays the hemispherical illuminance of the flying ball in the size of the flying ball.
The hemispherical illuminance of a flying ball can be easily known from the size of the flying ball.

[Brief description of drawings]

FIG. 1 is a flowchart showing an operation of an embodiment of a lighting calculation device of the present invention.

FIG. 2 is a block diagram showing the configuration of the above.

FIG. 3 is an explanatory diagram of hemispherical illuminance.

FIG. 4 is an explanatory diagram showing a display state of the above.

[Explanation of symbols]

1 computing device as calculation means 2 illumination device input device, illuminated part input means, observation point input means and keyboard as trajectory input means 3 cathode ray tube (CRT) 4 as display means plotter as display means

Claims (4)

[Claims] 1. A position of an illuminating device and an irradiation direction are input, a shape of an illuminated portion is input, an arbitrary observation point of the illuminated portion is input, and a trajectory of a flying ball located in the illuminated portion is input. An illumination calculation method comprising inputting and calculating the hemispherical illuminance of the flying ball at the observation point according to the position and irradiation direction of the illumination device. 2. An illumination device input means for inputting a position and an irradiation direction of the illumination device, an illuminated portion input means for inputting a shape of an illuminated portion, and an observation point for inputting an arbitrary observation point of the illuminated portion. Input means, trajectory input means for inputting the trajectory of a flying ball positioned on the illuminated portion, and input by the observation point input means according to the position and irradiation direction of the illumination device input by the illumination device input means. An illumination calculation apparatus comprising: a calculation unit that calculates a hemispherical illuminance of the flying ball on the parabolic trajectory input by the trajectory input unit at the observation point. 3. The illumination calculation apparatus according to claim 2, further comprising display means for displaying the trajectory as a parabola and displaying a target flying ball on the parabola. 4. The illumination calculation apparatus according to claim 2, further comprising display means for displaying the hemispherical illuminance of a flying ball by the size of the flying ball.