JP2010112714A - Ultraviolet ray measuring device and method of measuring ultraviolet ray - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve an ultraviolet ray measuring device measuring an accurate dosage of ultraviolet rays even under various kinds of conditions. <P>SOLUTION: In a casing 100 in a rectangular parallelepiped shape having a prescribed thickness, an opening 101 is formed, and a UV sensor element 10 and an illuminance sensor element 20 are installed in a region opened by the opening 101. A control section 300 of a signal processing circuit determines whether ultraviolet rays at a threshold level enabling measurement of ultraviolet rays are being applied to a surface at the side of a wave reception surface of the casing 100, based on the level (determination value) of an illuminance detection voltage signal based on the output of the illuminance sensor element 20. The control section 300 measures the dosage of ultraviolet rays, based on a UV detection voltage signal from the UV sensor element 101 when the determination value reaches the threshold enabling measurement of ultraviolet rays. More specifically, it is grasped whether environment is such that ultraviolet rays can be observed according to the illuminance, and the dosage of ultraviolet rays is measured by the UV sensor element when it is determined that the environment is such that ultraviolet rays can be observed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an ultraviolet ray measuring apparatus and an ultraviolet ray measuring method for measuring an ultraviolet ray irradiation amount.

  Conventionally, various ultraviolet measuring devices for measuring ultraviolet (UV) irradiation have been devised. Here, in order to accurately measure the amount of ultraviolet irradiation, it is necessary to install an ultraviolet measuring device so that the wave receiving surface of the UV sensor element that detects ultraviolet rays is as close as possible to the irradiation direction of the ultraviolet rays. . In addition, due to such measurement limitations, when measuring the amount of ultraviolet irradiation over time, it is necessary to rotate the wave receiving surface according to the movement of the sun position.

Therefore, the ultraviolet ray measuring apparatus described in Patent Document 1 includes a support base that is rotatably supported with respect to a fixed base, and a UV sensor element is fixedly installed on the upper plate of the support base. Then, a bowl-shaped body having a shape extending perpendicularly to the wave receiving surface of the UV sensor element is installed on the upper plate, and the support base is rotated based on the shade that the bowl-shaped body creates on the upper plate surface. Thus, the wave receiving surface of the UV sensor element is directed in the direction of ultraviolet (sunlight) irradiation.
JP 2000-121430 A

  However, in the ultraviolet ray measuring apparatus described in Patent Document 1, the number of components is increased and the mechanism is complicated, such as a fixed base, a support base, and a bowl-shaped body installed on the upper plate of the support base. Moreover, although the ultraviolet rays were irradiated, the receiving surface of the UV sensor element could not be accurately adjusted under the situation where the shade determined by visible light was not visible or extremely difficult to see. For this reason, the measurement may be performed in a state where the wave receiving surface is not accurately aligned, and it becomes difficult to measure an accurate amount of ultraviolet irradiation.

  An object of the present invention is to realize an ultraviolet ray measuring apparatus capable of measuring an accurate ultraviolet ray irradiation amount even under various conditions.

  In the ultraviolet ray measuring apparatus of the present invention, the ultraviolet ray sensor element and the illuminance sensor element are arranged in a predetermined positional relationship in the housing. The ultraviolet sensor element is sensitive to ultraviolet rays and outputs a signal corresponding to the received amount of the ultraviolet rays. The illuminance sensor element outputs a signal corresponding to the illuminance of light including ultraviolet rays. The ultraviolet ray amount measuring means acquires a judgment value for ultraviolet ray measurement based on the output signal level of the illuminance sensor element. When the ultraviolet ray amount measuring means detects that this judgment value has reached the ultraviolet ray measurable threshold value, it outputs the ultraviolet ray irradiation amount based on the output signal from the ultraviolet ray sensor element as the measurement value.

  In this configuration, the illuminance of light including ultraviolet rays is measured by the illuminance sensor element and used as a judgment value for measuring the amount of ultraviolet irradiation. Based on the determination value, a threshold value indicating whether the ultraviolet irradiation measurement is possible is set in advance as an ultraviolet ray measurable threshold value. If the ultraviolet ray measurable threshold value is not exceeded, an output signal of the ultraviolet sensor element is output. Only when the UV measurable threshold is exceeded, a measured value of the UV irradiation amount using the output signal of the UV sensor element is output. At this time, the ultraviolet ray irradiation amount may be measured by the ultraviolet ray sensor element when the ultraviolet ray measurable threshold is exceeded, or the measurement value is memorized by performing the measurement by the ultraviolet ray sensor element together with the measurement by the illuminance sensor element. Alternatively, when the ultraviolet ray measurable threshold value is exceeded, the stored measurement value corresponding to the time point when the ultraviolet ray measurable threshold value is exceeded may be output.

  Moreover, the ultraviolet ray measuring apparatus according to the present invention further includes a rotating means for rotating the casing. The ultraviolet ray amount measuring means sequentially obtains the judgment value while rotating the rotating means. If the judgment value that is the maximum value reaches the ultraviolet ray measurable threshold, the ultraviolet ray irradiation amount based on the judgment value that is the maximum value is obtained. Output as measured value.

  In this configuration, when the wave receiving surfaces of the UV sensor element and the illuminance sensor element are rotated by the rotating means, the relationship between the wave receiving surface of each sensor element and the ultraviolet irradiation direction changes according to the rotation, and the illuminance sensor element can obtain the illuminance sensor element. The judgment value also changes. Whether or not UV measurement is possible using the judgment value at the time when the wave receiving surface and the UV irradiation direction are close to the directional relationship that enables optimal measurement, that is, the maximum judgment value obtained sequentially according to the rotation. Used for judgment. Thereby, it is possible to measure the amount of ultraviolet irradiation using the optimum judgment value at all times.

  Further, the ultraviolet ray measuring apparatus of the present invention comprises a plurality of ultraviolet ray sensor elements. The plurality of ultraviolet sensor elements are installed with respect to the housing such that the directions of the wave receiving surfaces are different from each other.

  In this configuration, by using a plurality of ultraviolet sensor elements having different wave receiving surfaces, it is possible to measure the amount of ultraviolet irradiation from a plurality of angles with respect to the housing. As a result, an appropriate ultraviolet irradiation amount can be measured without a rotating mechanism, or the ultraviolet irradiation amount can be measured in an optimum measurement state even if the rotating amount by the rotating mechanism is reduced.

  In the ultraviolet ray measuring apparatus according to the present invention, a plurality of illuminance sensor elements are installed so as to have a paired relationship with each of the plurality of ultraviolet sensor elements. The pair of illuminance sensor elements and ultraviolet sensor elements are installed such that the directions of the wave receiving surfaces thereof substantially coincide with each other.

  In this configuration, since the illuminance sensor element is provided for each ultraviolet sensor element, it is possible to measure the illuminance (judgment value) from a plurality of angles with respect to the housing together with the ultraviolet irradiation amount. For this reason, the determination value can be measured without a rotation mechanism, or the determination value can be measured even if the amount of rotation by the rotation mechanism is reduced. Thereby, it is possible to determine whether or not the optimum judgment value can be selected and the ultraviolet ray irradiation amount can be measured without rotating the casing or reducing the rotation amount. In addition, it is possible to quickly select the optimum judgment value for the ultraviolet irradiation amount measurement and determine whether the ultraviolet irradiation amount measurement is possible.

  The ultraviolet ray measuring method of the present invention includes a threshold setting step, a judgment value acquisition step, a measurement judgment step, and an ultraviolet ray amount measurement step. In the threshold value setting step, an ultraviolet ray measurable threshold value is set for determining whether the ultraviolet ray irradiation amount can be measured based on the output signal of the illuminance sensor element. The determination value acquisition step acquires a determination value for measuring the amount of ultraviolet irradiation based on the output signal level of the illuminance sensor element. In the measurement judgment step, it is judged whether or not the judgment value has reached the ultraviolet ray measurable threshold. In the ultraviolet ray amount measuring step, when it is detected that the judgment value has reached the ultraviolet ray measurable threshold value, the ultraviolet ray irradiation amount based on the output signal from the ultraviolet sensor element is output as the measurement value.

  In this method, if the judgment value based on the output signal of the illuminance sensor element does not reach the UV measurable threshold, the output signal from the UV sensor element is not adopted, and if it reaches the UV measurable threshold, the output of the ultraviolet sensor element The signal is used to measure the amount of UV irradiation. Thereby, the measurement is performed only when the ultraviolet ray sensor element is reliably irradiated with the ultraviolet ray, and the ultraviolet ray irradiation amount can be accurately measured.

  The ultraviolet ray measuring method of the present invention further includes a determination value acquisition step for each rotation angle and a maximum determination value detection step. The determination value acquisition step for each rotation angle sequentially acquires the determination value while rotating the receiving direction of the illuminance sensor element. The maximum judgment value detection step detects the maximum value of a plurality of judgment values acquired while rotating. Then, in the determination value acquisition step, the maximum determination value is used for determination based on the ultraviolet ray measurable threshold.

  In this method, since the optimum measurement direction can be obtained by rotating the housing, the ultraviolet irradiation amount can be accurately measured.

  According to the present invention, it is possible to easily measure an accurate ultraviolet ray irradiation amount without being affected by the arrangement state of the ultraviolet ray measuring apparatus.

An ultraviolet ray measuring apparatus according to a first embodiment of the present invention will be described with reference to the drawings.
1A and 1B are diagrams showing a main configuration of an ultraviolet ray measuring apparatus according to the present embodiment, in which FIG. 1A is a plan view viewed from a wave receiving surface side, FIG. 1B is a side sectional view, and FIG. 1C is a circuit block diagram. .
FIG. 2 is a flowchart for explaining an ultraviolet ray measuring method using the ultraviolet ray measuring apparatus of this embodiment.

  As shown in FIGS. 1A and 1B, the ultraviolet ray measuring apparatus 1 has a housing 100 in which an opening 101 having a predetermined opening area is formed. The casing 100 has a rectangular parallelepiped shape having an internal space having a predetermined thickness (length in the vertical direction in FIG. 1), for example.

  A signal processing circuit board 30 formed by forming a circuit electrode pattern on a flat dielectric substrate is installed inside the housing 100. The UV sensor element 10 and the illuminance sensor element 20 are mounted on the surface of the signal processing circuit board 30 on the opening 101 side. The UV sensor element 10 and the illuminance sensor element 20 are disposed close to each other with the wave receiving surfaces parallel to each other. A signal processing IC 40 is mounted on the surface of the signal processing circuit board 30 on the opening 101 side. A battery 50 including a secondary battery and a holder member for storing the secondary battery is installed on the surface of the signal processing circuit board 30 opposite to the opening 101. The installation positions of the signal processing circuit IC 40 and the battery 50 are not limited to the example shown in FIG. 1, and may be set as appropriate according to design specifications.

  A cover member 110 is installed in the opening 101 of the housing 100. The cover member 100 is made of a material that transmits only ultraviolet rays, for example.

  Such an ultraviolet ray measuring apparatus 1 has a configuration shown in FIG. That is, the UV sensor element 10 and the illuminance sensor element 20 are connected to a signal processing circuit realized by the signal processing circuit board 30 and the signal processing IC 40. The signal processing circuit includes a control unit 300 including a microcomputer, a UV voltage detection circuit 301, an illuminance voltage detection circuit 302, and a memory 303. The battery 50 is connected to the UV sensor element 10, the illuminance sensor element 20, and the signal processing circuit, and supplies power to these circuit components.

  The UV sensor element 10 and the UV voltage detection circuit 301 output a UV detection voltage signal corresponding to the amount of received ultraviolet rays (irradiation amount) detected by the UV sensor element 10 by supplying power from the battery 50. The illuminance sensor element 20 and the illuminance voltage detection circuit 302 output an illuminance detection voltage signal corresponding to the illuminance detected by the illuminance sensor element 20 by supplying power from the battery 50. The control unit 300 acquires the level of the illuminance detection voltage signal and determines whether or not a preset ultraviolet ray measurable threshold value has been reached. If the level of the illuminance detection voltage signal has reached the ultraviolet ray measurable threshold, the control unit 300 acquires the level of the UV detection voltage signal and outputs it to a subsequent circuit or stores it in the memory 300. At this time, although not shown, if a display unit or the like is provided, display corresponding to the level of the UV detection voltage signal may be performed on the display unit. If the level of the illuminance detection voltage signal does not reach the ultraviolet ray measurable threshold, the control unit 300 discards the measurement result whether or not the level of the UV detection voltage signal is performed, and effective ultraviolet measurement if the display unit is provided. A display indicating that the result is not obtained is performed.

  The ultraviolet ray measuring apparatus 1 having such a configuration measures the ultraviolet ray irradiation amount according to the flow shown in FIG.

  First, the control unit 300 determines a criterion for determining whether or not the UV irradiation amount detected by the UV sensor element 10 is at a usable level using the illuminance obtained by the illuminance sensor element 20 as a parameter (S101). For example, the ultraviolet ray measuring device 1 is installed so that the wave receiving surfaces of the UV sensor element 10 and the illuminance sensor element 20 are horizontal, and the irradiation angle of light including ultraviolet rays with respect to the wave receiving surface is changed, and at the lowest level that can be normally detected. Irradiate a certain level of light. Then, based on the case where the irradiation direction of the ultraviolet rays is orthogonal to the wave receiving surface, the minimum value of the illuminance detection voltage signal in the range in which the UV sensor element 10 can accurately detect the ultraviolet irradiation amount by specifications is acquired.

  The controller 300 stores this value as an ultraviolet ray measurable threshold. Note that this ultraviolet ray measurable threshold value may be individually set for each date, time, latitude, etc., and by providing a function unit for acquiring the date, time, latitude, the ultraviolet ray can be set according to these parameters. The measurable threshold may be changed.

  The control unit 300 acquires the level of the illuminance detection voltage signal (hereinafter referred to as “determination value”) (S102), and compares the determination value with the ultraviolet ray measurable threshold (S103).

  If the determination value does not reach the ultraviolet ray measurable threshold value, the control unit 300 does not measure the ultraviolet ray irradiation amount, and again performs the process of acquiring the level of the illuminance detection voltage signal that is the determination value (S103: No → S102). ).

  On the other hand, if the determination value has reached the ultraviolet ray measurable threshold, the control unit 300 acquires the level of the UV detection voltage signal and measures the ultraviolet ray irradiation amount (S103: Yes → S104). At this time, the UV sensor element 10 sequentially measures and stores the level of the UV detection voltage signal together with the illuminance sensor element 20, and the control unit 300, when the judgment value reaches the ultraviolet ray measurable threshold, The level of the stored UV detection voltage signal corresponding to the time point may be output as a measurement value.

  By using such a configuration and measurement method, it is possible to measure the ultraviolet irradiation amount only in a state where the ultraviolet rays are reliably irradiated, that is, in a state where the ultraviolet rays can be sufficiently observed. Thereby, the measurement value in the state where measurement environment is inadequate is not included, and an accurate ultraviolet irradiation amount measurement can be performed.

  Next, an ultraviolet ray measuring apparatus according to the second embodiment will be described with reference to the drawings.

3A and 3B are diagrams showing the main configuration of the ultraviolet ray measuring apparatus 2 according to the present embodiment. FIG. 3A is an external perspective view, and FIG. 3B is a circuit block diagram.
FIG. 4 is a flowchart for explaining an ultraviolet ray measuring method using the ultraviolet ray measuring apparatus 2 of the present embodiment.

  The ultraviolet ray measuring apparatus 2 shown in the present embodiment is provided with a support shaft 102 and a base 103 that support the housing 100 with respect to the ultraviolet ray measuring apparatus 1 shown in the first embodiment (FIG. 1). . The support shaft 102 is composed of a rod, and the housing 100 is connected to one end in the axial direction, and the base 103 is connected to the other end. At this time, the support shaft 102 is connected to the side wall surface of the housing 100 and is connected to one main surface of the base 103. With this configuration, the ultraviolet ray measuring apparatus 2 can be installed in an upright state so that the wave receiving surfaces of the UV sensor element 10 and the illuminance sensor element 20 of the housing 100 are along the vertical direction.

  Further, the housing 100 is provided with a motor 60 as shown in FIG. 3B, and the housing 100 and the support shaft 102 are provided with gears that mesh with each other. The power generated by the motor 60 is transmitted to the gear, and the housing 100 rotates with respect to the support shaft 102 while the wave receiving surface remains along the vertical direction. With this configuration, the ultraviolet ray measuring device 2 can receive ultraviolet rays and light including the ultraviolet rays from the entire circumferential direction of the horizontal plane.

  The ultraviolet ray measuring apparatus 2 having such a configuration measures the ultraviolet ray irradiation amount according to the flow shown in FIG.

  First, as in the first embodiment, the control unit 300 uses the illuminance obtained by the illuminance sensor element 20 as a parameter and determines whether the ultraviolet irradiation amount observed by the UV sensor element 10 is at a usable level. Determination criteria are determined (S201).

  The control unit 300 controls rotation so that the housing 100 rotates at a predetermined angular velocity (S202).

  The control unit 300 acquires the level of the illuminance detection voltage signal (hereinafter referred to as “judgment value”) at each predetermined timing during the rotation of the housing 100, and also stores the rotation angle at each timing (S203). ). This process is performed until the housing 100 rotates once. Thereby, the judgment value for each rotation angle can be obtained in the entire circumferential direction.

  The control unit 300 compares a plurality of determination values during one rotation, and acquires a determination value that is the maximum value (hereinafter referred to as “maximum determination value”) (S204). At this time, the control unit 300 also acquires a rotation angle corresponding to the maximum determination value.

If the determination value does not reach the ultraviolet ray measurable threshold value, the control unit 300 does not measure the ultraviolet ray irradiation amount and performs the determination value acquisition process while rotating the housing 100 again (S205: No → S202). )
On the other hand, if the maximum judgment value has reached the ultraviolet ray measurable threshold, the control unit 300 acquires the level of the UV detection voltage signal and measures the ultraviolet ray irradiation amount (S205: Yes → S206). At this time, the control unit 300 rotates and fixes the housing 100 so that the rotation angle becomes the maximum judgment value. As a result, the wave receiving surface is oriented in an optimum direction at the time of the measurement, so that a more accurate ultraviolet irradiation amount can be measured.

  By using such a configuration and measurement method, it is possible to measure the ultraviolet irradiation amount in an optimum measurement environment at the time and situation when the measurement is performed. Thereby, a more accurate measurement of the amount of ultraviolet irradiation can be performed.

  In the description of the second embodiment described above, the example in which the ultraviolet irradiation amount is measured by directing the wave receiving surface in the optimum direction after the rotation angle that is the maximum judgment value is determined has been described. The level of the UV detection voltage signal at the rotation angle is measured and stored, and when each rotation angle that is the maximum judgment value is determined, the level of the UV detection voltage signal stored in advance corresponding to the rotation angle is determined. You may make it output as a measured value.

In the above description of the second embodiment, an example in which the casing 100 rotates on a horizontal plane while the wave receiving surface faces in the horizontal direction is shown. However, as shown in FIG. You may make it do.
FIG. 5 is an external perspective view showing a main configuration of the ultraviolet ray measuring apparatus 2 ′ of the present embodiment having another structure.
As shown in FIG. 5, the ultraviolet ray measuring device 2 ′ is driven with respect to the ultraviolet ray measuring device 2 shown in FIG. 3 so that the rotation direction of the substantially cubic housing 100 ′ is on the vertical plane. is there. With such a configuration, when the ultraviolet ray measuring device 2 ′ is installed on a horizontal plane, the optimum direction is the direction in which the wave receiving surface faces in the semicircle on the zenith direction side from the horizontal plane at the installation position. be able to. Even with such a configuration, it is possible to measure the amount of ultraviolet irradiation by turning the wave receiving surface in an optimum direction by rotation.

Next, an ultraviolet ray measuring apparatus according to a third embodiment will be described with reference to the drawings.
FIG. 6 is a diagram showing a main configuration of the ultraviolet ray measuring apparatus 3 of the present embodiment.
The ultraviolet ray measuring apparatus 3 according to the present embodiment is similar to the ultraviolet ray measuring apparatus 2 shown in FIG. 3 according to the second embodiment in that the housing 200 has a substantially cubic shape and is perpendicular to the surface to be supported. A UV sensor element and an illuminance sensor element are installed in a pair on one side wall.

  Specifically, a set of the UV sensor element 10 </ b> A and the illuminance sensor element 20 </ b> A is installed on the first side wall (the right front wall surface in FIG. 6) of the four side walls and is protected by the cover member 110. A set of a UV sensor element 10 </ b> C and an illuminance sensor element 20 </ b> C is installed on the third side wall (the left rear wall surface in FIG. 6) that faces the first side wall. Further, a set of a UV sensor element 10B and an illuminance sensor element 20B is installed on a second side wall (right rear wall surface in FIG. 6) perpendicular to these side walls, and a fourth side wall (front left in FIG. 6). On the wall surface, a set of a UV sensor element 10D and an illuminance sensor element 20D is installed. At this time, each set of sensors is installed so as to have the same horizontal position in a state of being installed as shown in FIG.

Moreover, the ultraviolet ray measuring apparatus 3 of this embodiment does not need to use the motor as shown in the second embodiment.
In the case of such a configuration, the control unit 300 acquires judgment values (the levels of the illuminance detection voltage signal) by the illuminance sensor elements 20A to 20D, each of which has a direction in which the wave receiving surface faces is different by 90 °. The control unit 300 compares the determination values obtained by these illuminance sensor elements 20A to 20D and selects the illuminance sensor element that takes the maximum value. The control unit 300 selects a UV sensor element that forms a pair with the illuminance sensor element that takes the maximum value, acquires the level of the UV detection voltage signal from the UV sensor element, and uses the threshold value as described above for the UV irradiation amount. Measure. As a result, it is possible to measure the amount of ultraviolet irradiation at the wave receiving surface facing in a direction suitable for observation without using a motor.

  Of course, a motor may be installed in the configuration of the present embodiment. In this case, as shown in the second embodiment, it is not necessary to perform 360 ° rotation, and if 90 ° rotation is performed, it is possible to obtain illuminance results in all directions. It is possible to determine the optimum direction in which the wavefront should face.

  In the configuration of the present embodiment, the case 200 having four side surfaces has been described as an example. However, a multi-sided case having a polygonal shape when viewed from the top can also be used. A pair of a UV sensor element and an illuminance sensor element may be installed.

  Further, in the configuration of the present embodiment, a mechanism that rotates on a circle as shown in FIG. 5 may be provided. In this case, a housing having a plurality of side surfaces only on the zenith side of the horizontal plane. Use your body.

  In each of the above-described embodiments, the example in which the UV sensor element and the illuminance sensor element are installed on the same wall surface of the housing is shown, but a structure as shown in FIG. 7 may be used.

  7A and 7B are diagrams showing a configuration of an ultraviolet ray measuring apparatus having another structural example, where FIG. 7A is a plan view and FIG. 7B is a side view.

  As shown in FIG. 7, the ultraviolet ray measuring device 4 includes a casing 210 made of a trapezoidal cube whose upper surface area is smaller than the lower surface area. On the upper surface of the casing 210, the illuminance sensor element 20 is installed that is built using the cover member 110. UV sensor elements 10 </ b> A to 10 </ b> D are provided on each of the four side surfaces of the casing 210 using the cover member 110. At this time, the illuminance sensor element 20 and the UV sensor elements 10 </ b> A to 10 </ b> D are installed such that the walls on which the illuminance sensor element 20 and the UV sensor elements 10 </ b> A and 10 </ b> D are respectively installed are parallel to each other. Even with such a structure, it is possible to use the UV sensor elements 10A to 10D in which the direction of the receiving surface is different, so that UV detection from the UV sensor element in which the receiving surface is directed in a direction suitable for observation without rotation. The level of the voltage signal can be acquired, and the ultraviolet irradiation amount can be measured more accurately. At this time, if the setting of the UV measurable threshold for the judgment value by the illuminance sensor element 20 is appropriately set according to the angle formed by the wave receiving surface of the illuminance sensor element 20 and the wave receiving surfaces of the UV sensor elements 10A to 10D, the illuminance It is possible to determine whether or not the ultraviolet ray can be accurately measured using the judgment value obtained by the sensor element 20.

  In addition, by using the configuration of FIG. 7, accurate ultraviolet measurement can be performed without using the same number of illuminance sensor elements as the number of UV sensor elements. In addition, since an oblique side wall is provided so as to form a predetermined angle that is not perpendicular to the horizontal plane, and the wave receiving surfaces of the UV sensor elements 10A to 10D are installed along the side wall, the illuminance shown in the first embodiment Compared to the case where the sensor element 20 and the UV sensor element 10 are directed in the same direction and the wave receiving surface is directed to the zenith direction, the ultraviolet irradiation amount can be measured even when the elevation angle in the light irradiation direction is low. .

  In addition, even if it is a structure as shown in FIG. 7, the number of side surfaces may be five or more, and by using a multi-sided body, ultraviolet rays can be measured more accurately.

It is a figure which shows the main structures of the ultraviolet-ray measuring apparatus which concerns on 1st Embodiment. It is a flowchart for demonstrating the ultraviolet-ray measuring method using the ultraviolet-ray measuring apparatus which concerns on 2nd Embodiment. It is a figure which shows the main structures of the ultraviolet-ray measuring apparatus 2 which concerns on 2nd Embodiment. It is a flowchart for demonstrating the ultraviolet-ray measuring method using the ultraviolet-ray measuring apparatus 2 which concerns on 2nd Embodiment. It is an external appearance perspective view which shows the main structures of the ultraviolet-ray measuring apparatus 2 'of this embodiment which consists of another structure which concerns on 2nd Embodiment. It is a figure which shows the main structures of the ultraviolet-ray measuring apparatus 3 which concerns on 3rd Embodiment. It is a figure which shows the structure of the ultraviolet-ray measuring apparatus which consists of another structural example.

Explanation of symbols

1,2,3,4-UV measuring device, 10, 10A-10D-UV sensor element, 20, 20A-20D-illuminance sensor element, 30-signal processing circuit board, 40 signal processing IC, 50 battery, 60-motor , 100, 100′-housing, 101-opening, 110-cover member, 102-support shaft, 103-stand, 300-control unit, 301-UV voltage detection circuit, 302-illuminance voltage detection circuit, 303 -Memory

Claims (6)

An ultraviolet sensor element that is sensitive to ultraviolet rays and outputs a signal corresponding to the received amount of ultraviolet rays;
An illuminance sensor element that outputs a signal corresponding to the illuminance of light including the ultraviolet rays;
A housing in which the ultraviolet sensor element and the illuminance sensor element are arranged in a predetermined positional relationship;
An ultraviolet ray based on an output signal from the ultraviolet sensor element is obtained when a judgment value for ultraviolet ray measurement is acquired based on the output signal level of the illuminance sensor element and the judgment value is detected to reach a threshold for measuring ultraviolet rays. An ultraviolet ray measuring device comprising: an ultraviolet ray amount measuring unit that measures the irradiation amount. Rotating means for rotating the housing,
The ultraviolet ray amount measuring means sequentially obtains the judgment value while rotating the rotating means, and if the judgment value that is the maximum value has reached the ultraviolet ray measurable threshold, it is based on the judgment value that is the maximum value. The ultraviolet ray measuring apparatus according to claim 1, wherein the ultraviolet ray irradiation amount is a measured value.   3. The ultraviolet measurement according to claim 1, wherein the ultraviolet sensor element includes a plurality of ultraviolet sensor elements, and the plurality of ultraviolet sensor elements are installed with respect to the housing such that directions of wave receiving surfaces thereof are different from each other. apparatus.   A plurality of the illuminance sensor elements are installed so as to have a pair of relationships with each of the plurality of ultraviolet sensor elements, and the pair of illuminance sensor elements and the ultraviolet sensor elements are on the receiving surface of each other. The ultraviolet ray measuring apparatus according to claim 3, wherein the ultraviolet measuring apparatus is installed so that the directions substantially coincide with each other. A threshold setting step for setting an ultraviolet ray measurable threshold value for determining whether or not ultraviolet ray measurement is possible based on the output signal of the illuminance sensor element;
A determination value acquisition step of acquiring a determination value for ultraviolet measurement based on the output signal level of the illuminance sensor element;
A measurement determination step of determining whether the determination value has reached the ultraviolet ray measurable threshold;
An ultraviolet ray measuring method comprising: an ultraviolet ray amount measuring step in which an ultraviolet ray irradiation amount based on an output signal from an ultraviolet sensor element is measured when it is detected that the judgment value has reached the ultraviolet ray measurable threshold. A determination value acquisition step for each rotation angle for sequentially acquiring the determination value while rotating the wave receiving direction of the illuminance sensor element;
A maximum judgment value detection step of detecting a maximum value of a plurality of judgment values acquired while rotating, and
The ultraviolet ray measurement method according to claim 5, wherein, in the decision value acquisition step, the decision value that is the maximum value is used for the determination based on the ultraviolet ray measurable threshold.

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