JPH11264760A - Sunburn intensity display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a device with a simple structure, capable of displaying sunburn intensity and used for getting a healthful moderate sunburn. SOLUTION: This sunburn intensity display device comprises a position/time input means for inputting the present position and time of a user, a sun-related time data computing means for finding southing time, rising time, and setting time of the sun from the present position and time of the user, a sunburn intensity computing means for computing the present-time sunburn intensity at the present position of the user, and a sunburn intensity display means for visually displaying a result of the sunburn intensity computing means. Thus, the sunburn intensity display device capable of computing sunburn intensity anywhere in the world can be realized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sunburn strength display device. The tanning intensity display device of the present invention obtains the sun mid-sun time, sunrise / sunset time from the current position and time of the user of the device, so that the user can visually understand the tanning intensity at the current time. It is intended to be displayed.

[0002]

For the sake of health, people living in high latitude areas such as Scandinavia go out and sunbathe actively during the summer sunshine to receive sunburn. Like that. In addition, young people sunbathe for proper sunburn on their whole body for health and beauty. The sun's rays contain components that are harmful to the human body when exposed to ultraviolet rays, such as ultraviolet rays, for a long time.Too much sunburn not only causes spots and freckles, but also causes skin cancer, etc. Has become. For this reason, excessive sunburn is harmful to health. To prevent such adverse effects,
It is necessary to know the intensity of sunlight in the place where you sunbathe.

[0003] In order to calculate the sunburn intensity, it is necessary to calculate the position and time of the sun altitude of the place where sunbathing is performed by calculating the intensity of sunlight. A number of auxiliary coefficient tables for correction are required, and a large amount of data and a memory for storing the data are required to calculate at an arbitrary point on the earth. For this reason, at present, there is no device that calculates the intensity of sunlight in a place where sunbathing is performed and informs a user of sunburn intensity information when performing an appropriate sunburn necessary for health or beauty. . SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and has an object of realizing a device capable of displaying a sunburn intensity with a simple configuration in order to use it for performing a healthy and appropriate sunburn.

[0004]

SUMMARY OF THE INVENTION A tanning intensity display device according to the present invention comprises a means for inputting a position and a time for inputting a user's current position and time, a time in the south of the sun and a sunrise based on the user's current position and time. The sun time information calculating means for obtaining the sunset time; the tan intensity calculating means for calculating the tan intensity at the current position of the user at the current time based on the information of the sun time information calculating means; It comprises tanning intensity display means for displaying the information so that it can be visually recognized. The tanning intensity display device of the present invention can realize the tanning intensity in all devices that can know the current position and the time, and can realize the tanning intensity display device that can calculate the tanning intensity anywhere in the world. I can do it.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION

FIG. 1 is a block diagram showing the configuration of a tanning strength measuring apparatus according to the present invention. In FIG. 1, GPS is a current position / time / direction measurement unit. SSC is a sunrise / sunset / mid-south time / sun elevation angle calculation unit. The CPU is a tan intensity calculation unit, and the DSP is a tan intensity display unit.
CON is a calculation and display control unit that controls the tanning strength calculation unit and the display unit.

The current position / time / azimuth measuring unit GPS is provided by a position measuring means such as GPS which is widely used at present.
Measure the current position of the field of use and use the measured data at sunrise
It is supplied to the sunset / south middle time / sun elevation angle calculation unit SSC and the sunburn intensity calculation unit CPU. Based on the data of the current position / time / azimuth measurement unit GPS and sunrise / sunset / south-medium time / sun elevation angle calculation unit SSC, the tanning intensity calculation unit CPU calculates the tanning intensity at the healthy time at the current position based on the data. The result is supplied to a sunburn strength display section DSP. The tanning intensity display section DSP displays the tanning intensity at the current position in an easy-to-understand manner such as a bar graph, color density, and percentage. Such a series of operations is executed under the control of the arithmetic and display control unit CON.

[0007] The sunrise / sunset / south-south time / sun elevation time calculation unit SSC for calculating the calculation data of the tan intensity display device having such a function.
The sun elevation angle meter at sunrise sunset time and mid-south time and the calculation of the sun elevation angle at an arbitrary time will be described below. 1. A method of calculating the time in the south (time when the sun comes to the south) will be described with reference to FIG. FIG. 2 shows the measurement point P
It is a figure explaining the sunrise, south middle, and sunset in. In FIG. 2, P is a measurement point for measuring the tan concentration at a specific position on the earth.

Ts (hour) is the south mid-point time at the measurement point P. λ is the longitude of the measurement point P (the east longitude is 10 and the west longitude is 1). The standard time longitude of the area to which the measurement point P belongs is λ0 (degrees)-The equation of time of the sun at noon at the measurement point P (a value for correcting the seasonal shift of the orbit of the sun) is {T (hour)]-The hour angle of the earth (the rotation angle of the earth per hour) is {} H
(Degrees / hour), the mid-south time Ts at the measurement point P is expressed by the following relationship: Ts = 12 (hours) -one (λ−λ0) / △ H- △ T (1) . For this reason, the south middle time Ts represents the longitude λ of the measurement point P, the standard time longitude of the area to which the point P belongs, λ 0, the earth angle △ H, and the sun's equation of time at the measurement point P at noon △ T (hour). Can be calculated.

[0009] 2. A method of calculating the sunrise and sunset times will be described with reference to FIG. H (degrees) is the angle from the south to the sunset (sunrise) at the measurement point P in FIG. 2. μ (degrees) is the angle from the horizon of the sun at sunset. If the latitude at point P is Ｐ (degrees), then as shown in FIG. 2, cosH = −tanФ · tan σ−sin μ by the spherical triangular formula as shown in FIG. · SecФ · secσ (2) Therefore, the hour angle H from the south to the sunset (sunrise) can be calculated from the angle μ from the sun's horizon at the point P at sunset, the declination σ of the sun, and the latitude of the P point.

If the sunrise time and the sunset time are To be the sunrise time and Ti is the sunset time, To = Ts−H / ΔH (3), Ti = Ts + H / ΔH (4) Is established. For this reason, the sunrise time and the sunset time can be calculated from the south middle time Ts and the hour angle H from the south to the sunset (sunrise) and the hour angle of the earth from ΔH.

3. A method for calculating the absolute azimuth of the solar orbit plane will be described with reference to FIG. FIG. 4 is a diagram showing the relationship between the sun orbit and the observation points. In FIG. 4, S is the sun,
P is the measurement point of the user. Θ is the absolute azimuth of the solar orbit plane at any time. Absolute azimuth is 3 clockwise from axial north
60 degrees (defined as 360 degrees clockwise with north set to 0 degrees). α is the absolute azimuth of the user on the horizontal plane and Ψ is the elevation angle of the sun. The sun's orbit plane and the user's horizontal plane are inclined by 90 degrees. Assuming that the absolute azimuth of the solar orbit plane at an arbitrary time from the measurement point P at an arbitrary time T (hour) of the measurement point P is Θ (degree), Θ = Θ (T−Ts) x △ H｝ 10180 (degree) · .. (5) holds. Therefore, the absolute azimuth 太陽 of the sun's orbit plane at an arbitrary time viewed from the measurement point P can be calculated from the sunrise time and the sunset time, the south middle time Ts and the hour angle of the earth from △ H.

4. A method for calculating the south-center elevation angle of the sun will be described with reference to FIG. FIG. 3 is an explanatory diagram of the south middle elevation angle of the sun. In FIG. 3, O is the center of the sun's orbit projected onto the YZ plane, and the center Ψ0 is the elevation angle of the sun at the time of the equinox of spring. Assuming that the length of the line segment Oss in FIG. 3 is 1, OP = | tanσ | OP ′ = | tanσ | * sinΦ PSs = 1 / cosσ. From FIG. 3, the elevation angle of the sun at the midpoint of the vernal equinox and the equinox from the measurement point P in order to obtain the elevation angle of the sun in the south is Ψ.
If 0 (degrees), Ψ0 = 90 (degrees) −Φ (6) Also, the elevation angle of the sun (Ss) in the middle of the south as viewed from the measurement point P is Ψ
Assuming that s, the following relational expression holds: {s = 90 (degrees) -one} + σ (7) Therefore, the elevation angle of the sun at mid-spring and autumn equinox as viewed from the measurement point P is Ψ0, and the elevation angle of the sun (Ss) at mid-south as viewed from the measurement point P is Ψs, the latitude of the point P and the declination of the sun It can be calculated from σ.

5. The calculation of the absolute horizontal azimuth of the sun will be described with reference to FIGS. FIG. 5 is a diagram showing a state in which the orbit of the sun is projected on an XY plane. In FIG. 5, O is the center when the center of the solar orbit is projected on the YZ plane. S is the sun projected on the YZ plane, SP is the distance on the YZ plane from the user to the sun, SP = R, north is defined as 0 degree, and clockwise is defined as 360 degrees. If the absolute azimuth of the horizontal plane of the sun at any time viewed from the measurement point P is the distance to the sun viewed from the αP point, R

(Equation 1) Is established. Therefore, the absolute azimuth α of the horizontal plane of the sun at an arbitrary time viewed from the measurement point P and the distance R to the sun as viewed from the point P are obtained from the absolute azimuth 太陽 of the sun's orbit plane at an arbitrary time viewed from the measurement point P and the measurement point P The elevation angle of the sun during mid-spring / autumn equinox can be calculated from Ψ0 and the declination of the sun from σ. 6. Calculation of the elevation angle of the sun When the elevation angle of the sun at the absolute azimuth α from the point of measurement P is Ψ, the relational expression of Ψ = sin- ¹ (R × cosσ × | cosα |) (10) holds. Therefore, the elevation angle of the sun at the absolute azimuth α viewed from the point P can be calculated using R, α, Ψ, Θ obtained from the equations (4) to (8). In these equations, when α is 0, the equinox / autumn equinox points are obtained. Sunrise / Sunset / South-Middle Time / Sun Elevation Calculator SS
The tanning intensity calculation unit CPU calculates the tanning intensity based on the various data calculated in steps C through 1 above in C.

A method of calculating the sunburn strength will be described with reference to FIG. FIG. 6 is an illustration of the solar ray intensity per unit area. In FIG. 6, S is the sun, and P is the current position of the user. The intensity of a plane perpendicular to the sun's rays is Eo, and the sun's ray intensity on the ground plane at point P is Ep, both of which are represented by thick lines. The tanning intensity is considered to be substantially proportional to the intensity of light rays (ultraviolet rays) coming from the sun, and it may be considered that the intensity changes according to the elevation angle of the sun. From FIG. 6, the intensity Ep of the solar ray per unit area is expressed as follows using the elevation angle Ψ.

Ep = E0xsinΨ (11) where E0 = sunlight intensity per unit area when the sun is directly above (Ψ = 90) Ep = sunlight intensity per unit area when the sun is at elevation angleΨ . The value of sinΨ in the equation (11) is a ratio of the tanning intensity, and the tanning intensity can be expressed in% (percent) with the maximum intensity being 1OO%. Tanning intensity calculation section C
The result of the calculation of the tan intensity performed in the PU is added to the display unit DSP, and the tan intensity is displayed. Various display examples of the tanning intensity displayed by the display unit DSP will be described below.

FIG. 7 is a view showing an example of the display of the tanning intensity of the display section DSP. The display example of FIG. 7 shows a numerical value in which the maximum intensity is 1OO and a numerical value, and an example in which the color intensity is displayed. In FIG. 7, the left column shows an example of a numerical expression, the center shows an example of a graph, and the right column shows a display example of a grayscale expression. The left column of FIG. 7 shows an example of a numerical expression. The upper left column shows percentages, and the lower column shows percentage values. The center of FIG. 7 shows a graph expression example. The tanning intensity is indicated by a bar graph. The right column of FIG. 7 shows a display example in a shaded expression. The upper row shows the density pattern corresponding to the sunburn intensity, and the upper row shows the density pattern indicating the actual intensity. By comparing the actual intensity of the lower part with the standard pattern of the upper part, the intensity of the tan is known.

FIG. 8 is a view showing another example of the display of the tanning intensity of the display section DSP. The calculation processing of the sunburn intensity display device of the present invention can also be performed by the calculation unit of the position detection device of the navigation system such as GSP. FIG. 8 shows an example in which the functions of the present invention are mounted on a portable navigation system. FIG. 8 is a diagram in which a tanning intensity display device is mounted on portable navigation. In the example of FIG. 8, the actual tanning intensity is displayed as a percentage (76%) of a numerical value in the lower right part of the portable navigation display. In this case, the sunburn intensity is displayed without losing the portable navigation function.

FIG. 9 is a view showing another example of the display of the sunburn intensity on the display section DSP. Further, the calculation processing of the tanning intensity display device of the present invention can be performed by the arithmetic unit of the wristwatch-type position detecting device. The example of FIG. 9 shows an example in which the function of the sunburn intensity display device of the present invention is mounted on a wristwatch-type position detection device. In the example of FIG. 9, the current position is displayed as a numerical value, and the sunburn intensity is displayed as a bar graph at the right half position. The current time as a clock function is displayed at the top, so that the user's current position and tanning intensity can be displayed without losing the function of the clock.

FIG. 10 shows a flowchart for performing the tanning intensity calculation and display processing of the tanning intensity display device of the present invention shown in FIG. FIG. 10 is a flowchart of tanning intensity calculation and display processing of the tanning intensity display device of the present invention. In order to perform the tanning intensity calculation process, first, a cycle Tp for performing the tanning intensity calculation process is set.
When the power is turned on after setting the cycle, the current time T,
Data of the latitude Y and longitude X of the current position are acquired.
In order to measure the period Tp for performing the calculation process, the time timer increment counts the time.

The time counter calculates the time of the calculation period and determines whether or not the time exceeds the set period Tp. When the time timer increment exceeds the set time period Tp, the timer is cleared and T = 0 is set. Thereafter, a calculation is performed to find the sunrise sunset times To and Ti at the latitude Y and longitude X of the current position. This calculation is performed using equations (1) to (3). Sunrise time To, sunset time Ti, and current time T obtained as a result of the calculation
If the current time is between the sunrise time To and the sunset time Ti, it is determined that the current time is daytime. If the current time is outside the sunrise time To or the sunset time Ti, it is determined that the current time is night. If the result of determination is that it is night, the tanning intensity is not calculated.

When it is determined that the current time is daytime, a calculation for determining the sunburn intensity is performed. Equations (4) to (8) are used in this calculation to determine the sun elevation angle. When the sun elevation angle is obtained, a calculation for obtaining the sunburn intensity is performed by equation (9). After the calculation of the tanning intensity, the tanning intensity is displayed. The display of the sunburn intensity is displayed for the period Tp. After the period of the cycle Tp, the calculation of the tanning intensity is started again. In this way, the tanning intensity is calculated periodically and the calculated result is displayed on the display device only during the period Tp, so that the latest tanning intensity is always displayed.

In this way, the elevation angle of the sun at the current position and time is calculated, and the tanning intensity can be calculated from this value, so that the user can be notified of the current tanning intensity. In the above description, an example is described in which one measuring device such as GPS is used for measuring the latitude Y and longitude X of the current position for measuring the sunburn intensity, but the current position for measuring the sunburn intensity does not change. In this case, the latitude and longitude X of the current position where the tanning intensity is measured are checked, and these values are input to an arithmetic unit having a clock function. Can be realized.

[0023]

As is clear from the above description, the tanning intensity display device of the present invention comprises a position and time input means for inputting the user's current position and time, and the sun's position based on the user's current position and time. Sun time information calculating means for obtaining the south middle time, sunrise and sunset times, a tan intensity calculating means for calculating the tan intensity at the current position of the user at the current time based on information of the sun time information calculating means, a tan intensity The tanning strength display means displays the result of the calculation means so as to be visually recognized.

For this reason, the present invention provides: * The tan intensity can be calculated by calculating the position (azimuth and elevation) of the sun at an arbitrary time. Is feasible. * Regardless of time or season, the current tan intensity can be obtained from the position and time anywhere in the world. * It is possible to realize a device that can determine the current tan intensity by simply adding a tan intensity calculation program without changing the hardware of a position detection device such as a GSP that currently exists.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a tanning strength measuring device according to the present invention.

FIG. 2 is a diagram for explaining sunrise, south middle, and sunset at an observation point.

FIG. 3 is an explanatory diagram of a south middle elevation angle of the sun.

FIG. 4 is a diagram showing a relationship between a solar orbit and observation points.

FIG. 5 is a diagram showing a state where the orbit of the sun is projected on an XY plane.

FIG. 6 is an illustration of sunlight intensity per unit area.

FIG. 7 is a diagram showing an example of a display of sunburn intensity on a display unit DSP.

FIG. 8 is a diagram showing another example of the display of the tanning intensity of the display unit DSP.

FIG. 9 shows an example in which the function of the sunburn intensity display device of the present invention is mounted on a wristwatch-type position detection device.

FIG. 10 is a flowchart of tanning intensity calculation and display processing of the tanning intensity display device of the present invention.

[Description of Signs] GPS: Current position / time / direction measurement unit, SS
C: sunrise / sunset / south-medium time / sun elevation angle calculation unit, CPU: sunburn intensity calculation unit, DSP
..Display part of tanning intensity, CON ... Calculation and display control part

Claims (7)

[Claims] A means for measuring a position and a time for measuring a current position and a time of a user; a means for calculating time information of the sun for obtaining a mid-sun time and a sunrise / sunset time from the current position and a time of the user; Tan intensity calculating means for calculating the tan intensity at the current position of the user at the current time based on the information of the time information calculating means, tan intensity displaying means for displaying the result of the tan intensity calculating means so as to be visually understood. A tan intensity indicator. 2. A means for measuring position and time using a global position system for measuring a user's current position and time, and a method for determining the sun's middle time and sunrise / sunset times from the user's current position and time. A tan intensity calculating means for calculating the tan intensity at the current position of the user at the current time based on the information of the time information calculating means and the sun time information calculating means, and the result of the tan intensity calculating means is visually displayed. A tan intensity display device comprising tan intensity display means. 3. A means for measuring a position and a time for measuring a user's current position and time; a means for calculating time information of the sun for obtaining a time in the south of the sun and sunrise and sunset times from the current position and time of the user; Tan intensity calculating means for calculating the tan intensity at the current position of the user at the current time based on the information of the time information calculating means, tan intensity display means for displaying the result of the tan intensity calculation means as a percentage of the tan intensity. A tan intensity indicator. 4. A means for measuring the position and time for measuring the current position and time of the user, a means for calculating time information of the sun for obtaining the mid-sun time, sunrise and sunset times from the current position and time of the user; Tan intensity calculating means for calculating the tan intensity at the current position of the user at the current time based on the information of the time information calculating means, tan intensity display means for displaying the result of the tan intensity calculation means in a bar graph showing the tan intensity A tan intensity indicator. 5. A means for measuring a position and a time for measuring the current position and time of the user, a means for calculating time information of the sun for obtaining a time in the south of the sun and a sunrise / sunset time from the current position and time of the user; Tan intensity calculating means for calculating the tan intensity at the current position of the user at the current time based on the information of the time information calculating means, tan intensity display for displaying the result of the tan intensity calculation means in a shaded pattern indicating the tan intensity A tanning intensity display device comprising: 6. A means for measuring position and time using a portable navigation system for measuring the current position and time of the user, a time in the south of the sun based on the current position and time of the user,
Sun time information calculating means for obtaining sunrise / sunset times, results of tan intensity calculating means for calculating tan intensity at the current position of the user at the current time based on information of the sun time information calculating means, results of tan intensity calculating means Tan intensity display device, comprising tan intensity display means for displaying the tan intensity on a display device of a portable navigation system. 7. A means for measuring the position and time using a wristwatch-type position detecting device for measuring the current position and time of the user, and finding the southern middle time of the sun and the sunrise and sunset times from the current position and time of the user. Sun time information calculating means, a tan intensity calculating means for calculating the tan intensity at the current position of the user at the current time based on information of the sun time information calculating means, a wristwatch type position detecting device A tan intensity display device comprising a tan intensity display means for displaying the tan intensity value on the display device.