JP2015031514A - Light distribution measuring apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light distribution measuring apparatus for a marker light capable of measuring a chromaticity of a light distribution pattern at a predetermined position and promptly measuring the light distribution pattern and the chromaticity.SOLUTION: A light distribution measuring apparatus 1 includes: a light detection unit 2 detecting a luminous intensity of a marker light 9; a chromaticity detection unit 3 detachably arranged on a horizontal axis passing through a center of a predetermined light distribution pattern of the marker light 9 and detecting a chromaticity of the marker light 9; a pedestal control unit 4 rotating a pedestal 10 on which the marker light 9 is mounted; a light distribution measuring control unit 5 turning on the marker light 9 in the predetermined light distribution pattern, obtaining a light reception signal from the light detection unit 2, and obtaining a chromaticity reception signal from the chromaticity detection unit 3; and a data processing unit 6 obtaining a planar light distribution pattern of the marker light 9 on the basis of the light reception signal from the light detection unit 2 and a rotational angle of the pedestal 10, and obtaining the chromaticity of the marker light 9 on the basis of the chromaticity reception signal from the chromaticity detection unit 3.

Description

  The present invention relates to a light distribution measurement device that measures light distribution measurement data for data inspection and performs data processing.

  For example, at an airport, various air traffic signs are installed on runways and taxiways for taking off and landing of aircraft. The aviation beacon lamps are specified with different standards for optical characteristics depending on the type. One of the standards is the distribution of the brightness of light projected from the aviation beacon lamp, that is, the light distribution characteristic. In order to check whether the air traffic lights maintain the predetermined light distribution characteristics according to each type, remove the air traffic lights from the runway and taxiway and measure the light distribution characteristics at other locations. I have to.

  The light distribution measuring device mounts the removed aerial beacon light on a gantry, receives light from the light source part of the aerial beacon light by a light detection part, and distributes light based on a light reception signal received by the light detection part. I try to get a pattern. The light detection unit includes an illuminometer that is a plurality of optical sensors arranged in a straight line and a chromaticity meter that is a single optical sensor arranged at the center. The illuminometer detects the illuminance for each irradiation angle of the light source part of the air traffic light, and the chromaticity meter detects the chromaticity of the light source part of the air traffic light. And these sensors are arrange | positioned on the screen, and the chromaticity meter is arrange | positioned near the illuminance meter in the middle of the illuminance meter arrange | positioned linearly (for example, refer patent document 1).

Japanese Patent No. 5002983 (2nd page, FIG. 14)

  The illuminance of the light from the aviation beacon is measured on a screen that is 5m away from the aviation beacon, for example, and is measured by rotating the mount on which the aviation beacon is mounted at a predetermined rotation angle, for example, every 1 degree. doing. The chromaticity needs to be measured at the center of the light distribution pattern. However, in order to place a chromaticity meter in a linearly arranged luminometer, the chromaticity meter is placed at a desired position due to the size of the respective light receivers of the luminometer and the chromaticity meter. There is a problem that can not be. For this reason, the chromaticity at the center of the light distribution pattern may not be obtained correctly.

  An object of the present embodiment is to provide a light distribution measurement device for a marker lamp that can measure chromaticity at a predetermined position of a light distribution pattern and can quickly measure the light distribution pattern and chromaticity. To do.

  The light distribution measurement device of this embodiment includes a light detection unit, a chromaticity detection unit, a gantry control unit, a light distribution measurement control unit, and a data processing unit.

  The light detection unit includes light sensors arranged in a straight line, and detects light intensity by receiving light from a marker lamp mounted on the gantry with the light sensor. The chromaticity detection unit receives light from the marker lamp and detects chromaticity, and is detachably disposed on a horizontal axis passing through the center of a predetermined light distribution pattern of the marker lamp.

  The gantry controller rotates the gantry on which the marker lamp is mounted according to a predetermined light distribution pattern of the marker lamp. The light distribution measurement control unit lights the marker lamp with a predetermined light distribution pattern. The light distribution measurement control unit obtains a light reception signal from the light detection unit from the start point to the end point of the rotation angle every time the gantry rotates by a predetermined rotation angle, and detects chromaticity. The chromaticity reception signal from the unit is obtained.

  The data processing unit obtains a planar light distribution pattern of the marker lamp based on the light reception signal from the light detection unit obtained by the light distribution measurement control unit and the rotation angle of the gantry, and also from the chromaticity detection unit. The chromaticity of the marker lamp is obtained based on the chromaticity reception signal.

  According to the light distribution measurement device of the present embodiment, the chromaticity detection unit is detachably disposed on the horizontal axis passing through the center of the predetermined light distribution pattern of the marker lamp, so that the gantry has a predetermined rotation angle. When rotating sequentially, it is located at the center of the light distribution pattern, and at this time, the chromaticity at the center position of the light distribution pattern can be detected.

It is a schematic block diagram of the light distribution measuring apparatus which shows the 1st Embodiment of this invention. The arrangement of the light detection unit and the chromaticity detection unit on the screen is shown, with (a) being a schematic front view and (b) being a schematic side view. It is a top view of the predetermined light distribution pattern of a marker lamp same as the above. It is an arrangement plan of a photodetection part of a light distribution measuring device showing a 2nd embodiment of the present invention.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. First, the first embodiment will be described.

  As shown in FIGS. 1 and 2, the light distribution measurement device 1 of this embodiment includes a light detection unit 2, a chromaticity detection unit 3, a gantry control unit 4, a light distribution measurement control unit 5, and a data processing unit 6. Configured.

  As shown in FIG. 2, the light detection unit 2 includes a plurality of illuminometers 8 serving as a plurality of optical sensors arranged linearly on a screen 7. In the present embodiment, 16 illuminometers 8 are arranged at equal intervals along a vertical axis (not shown) passing through the center 7 c of the screen 7. The screen 7 is made of, for example, an iron plate, and one surface 7a is formed in a spherical surface (R surface) having a radius of 5 m, for example. That is, as shown in FIG. 2B, the irradiation distance L1 between the one surface 7a of the screen 7 and the marker lamp 9 is 5 m. The marker lamp 9 is an aerial marker lamp, for example, and is mounted on the gantry 10. The gantry 10 is equipped with a marker lamp 9 that is rotatable in the circumferential direction.

  The plurality of illuminance meters 8 receive light emitted from the marker lamp 9 and detect illuminance as light intensity on one surface 7 a of the screen 7. The plurality of illuminometers 8 are connected by a daisy chain, and each detected illuminance is output to the light distribution measurement control unit 5 as a light reception signal. Here, the plurality of illuminance meters 8 are formed so as to output the light reception signal as a digital signal.

  The chromaticity detection unit 3 includes one chromaticity meter 11 as shown in FIG. The chromaticity meter 11 passes through the center 7 c of the screen 7, and is disposed on the horizontal axis 12 along the one surface 7 a of the screen 7 and away from the light detection unit 2 on the screen 7. The chromaticity meter 11 is provided with, for example, a magnet and is detachably disposed on the screen 7. The chromaticity meter 11 receives the light from the marker lamp 9 and detects the chromaticity of the light. The chromaticity meter 11 is connected to the light distribution measurement control unit 5 and is configured to output the detected chromaticity to the light distribution measurement control unit 5 as a chromaticity reception signal.

  In the present embodiment, the sign is set so that the optical axis 13 of the marker lamp 9 is the center 7c of the screen 7, that is, the center of the predetermined light distribution pattern of the marker lamp 9 is the center 7c of the screen 7. A lamp 9 is mounted on the gantry 10. However, the marker lamp 9 may be provided so that the center of the predetermined light distribution pattern does not become the center 7 c of the screen 7. Here, the chromaticity meter 11 is disposed on one surface 7 a of the screen 7 on a horizontal axis passing through the center of a predetermined light distribution pattern of the marker lamp 9.

  In the present embodiment, the marker lamp 9 is rotated by a predetermined rotation angle, for example, a rotation angle of 1 ° in the circumferential direction. The chromaticity meter 11 is disposed at a position where the optical axis 13 of the marker lamp 9 and the one surface 7a of the screen 7 intersect when the marker lamp 9 is rotated by a rotation angle of 1 °. At the intersection position, the symbol 14 is described according to the light distribution pattern according to the type of the marker lamp 9.

  In FIG. 1, a power supply connector 15 that supplies AC constant current power to the marker lamp 9 has two connector terminals 16 for supplying power, and is connected to a measurement connector 17. As a result, a lighting power source is supplied from the AC / DC power source 18 for measurement to the light source unit (not shown) of the marker lamp 9. The marker lamp 9 is lit with power from the measurement AC / DC power supply 18.

  The gantry control unit 4 continuously rotates the gantry 10 on which the marker lamp 9 is mounted according to a predetermined light distribution pattern of the marker lamp 9 at a predetermined rotation angle. In other words, the gantry controller 4 drives an electric motor (not shown) of the gantry 10 to rotate the gantry 10. Thereby, the marker lamp 9 mounted on the gantry 10 is continuously rotated. For example, a stepping motor can be used as the electric motor. That is, for example, in the case of a light distribution pattern in which the left and right front spreading angle of the marker lamp 9 is 100 °, the gantry control unit 4 can detect illuminance data having a left and right front spreading angle of 100 °. The gantry 10 is rotated. At this time, the gantry control unit 4 controls the gantry 10 so as to rotate by a predetermined rotation angle, for example, by 1 °. As the gantry 10 is rotated, the marker lamp 9 is continuously rotated at a predetermined rotation angle, for example, 1 °.

  The light distribution measurement control unit 5 lights the marker lamp 9 with a predetermined light distribution pattern, and receives a light reception signal from the light detection unit 2 every time the gantry 10 rotates by a predetermined rotation angle. Further, the light distribution measurement control unit 5 receives the light reception signal from the start point to the end point of the rotation angle. Since the light reception signal is a digital signal, the light distribution measurement control unit 5 does not require A / D conversion. That is, the light distribution measurement control unit 5 obtains an optical reception signal as a digital signal when the gantry 10 is sequentially rotated by a rotation angle corresponding to the measurement interval.

  Further, the light distribution measurement control unit 5 receives the chromaticity reception signal from the chromaticity detection unit 3. When the chromaticity reception signal is an analog signal, the chromaticity reception signal is obtained by A / D conversion.

  The data processing unit 6 obtains a planar light distribution pattern of the marker lamp 9 based on the light reception signal from the light detection unit 2 obtained by the light distribution measurement control unit 5 and the rotation angle of the gantry 10. The planar light distribution pattern is formed by combining the illuminance data at each rotation angle detected by the illuminance meter 8 arranged linearly on the screen 7. The data processing unit 6 is formed so as to calculate and obtain the chromaticity of light from the marker lamp 9 based on the chromaticity reception signal from the chromaticity detection unit 3 (chromaticity meter 11).

  Next, the operation of the first embodiment of the present invention will be described.

  The gantry control unit 4 continuously and sequentially rotates the gantry 10 on which the marker lamp 9 is mounted so as to obtain a light distribution pattern corresponding to the type of the marker lamp 9. In addition, the gantry control unit 4 continuously rotates the gantry 10 within a range in which illuminance data representing a predetermined light distribution pattern of the marker lamp 9 can be acquired. For example, as shown in FIG. 3, the range of the predetermined light distribution pattern 18 of the marker lamp 9 in the left-right direction is the rotation position P1 to the rotation position P21, and the marker lamp can obtain illuminance data in this range. 9 is continuously rotated. And the light distribution measurement control part 5 has arrange | positioned linearly so that illumination data can be obtained in the range of the rotation position P1-rotation position P21 of the left-right direction range of the predetermined light distribution pattern 18 of the marker lamp 9. Data processing is performed on the illuminance meter 8. Thereby, the inspected light distribution pattern is obtained.

  And since the chromaticity meter 11 is arrange | positioned in the position where the optical axis 13 of the marker lamp 9 and the one surface 7a of the screen 7 cross | intersect, when the marker lamp 9 is rotated by 1 degree of rotation angles, When the gantry 10 is rotated, the optical axis 13 of the marker lamp 9 may coincide with the arrangement position of the chromaticity meter 11. At this time, the chromaticity meter 11 is located at the center of the predetermined light distribution pattern 18 of the marker lamp 9.

  The chromaticity meter 11 detects the chromaticity of the light from the marker lamp 8 and outputs a chromaticity reception signal to the light distribution measurement control unit 5. The light distribution measurement control unit 5 obtains the chromaticity reception signal as a digital signal. Then, the data processing unit 6 obtains the chromaticity of the marker lamp 8 based on the chromaticity reception signal. Thereby, the chromaticity at the center of the predetermined light distribution pattern 18 of the marker lamp 9 is obtained.

  Then, the data processing unit 6 displays the light distribution pattern and chromaticity of the inspection of the marker lamp 9 on the display or prints them on a printed matter. Thereby, the test result of the marker lamp 9 is obtained. As described above, the illuminance measurement for obtaining the light distribution pattern of the marker lamp 9 and the chromaticity measurement can be performed simultaneously, and the chromaticity at the center of the predetermined light distribution pattern 18 can be measured. That is, the light distribution measuring device 1 can quickly measure the light distribution pattern and chromaticity of the inspection.

  Since the illuminometer 8 outputs a light reception signal as a digital signal, the number of wires between the light detection unit 2 and the light distribution measurement control unit 5 can be reduced. In addition, the light reception signal is received by the light distribution measurement control unit 5 with reduced noise. Therefore, a light distribution pattern with improved accuracy can be obtained.

  According to the light distribution measuring apparatus 1 of the present embodiment, since the gantry 10 on which the marker lamp 9 is mounted is rotated at a predetermined rotation angle, the light distribution pattern and chromaticity of the marker lamp 9 to be inspected are measured. The effect is that it can be performed quickly. In addition, the chromaticity detection unit 3 is detachably disposed on the screen 7 on the horizontal axis 12 passing through the center of the predetermined light distribution pattern 18 of the marker lamp 9 to be inspected, so that the gantry 10 rotates. Sometimes, there is an effect that the chromaticity at the center position of the light distribution pattern 18 can be correctly detected by being positioned at the center of the predetermined light distribution pattern 18.

  In addition, since the illuminometer 8 outputs a light reception signal as a digital signal, the light distribution measurement device 1 can reduce the number of wires between the light detection unit 2 and the light distribution measurement control unit 5 and can improve the distribution with improved accuracy. The effect is that a light pattern can be obtained.

  Next, a second embodiment of the present invention will be described.

  As shown in FIG. 4, the light distribution measurement device 21 of the present embodiment is the light distribution measurement device 1 shown in FIG. 2, in which the light detection unit 2 and the chromaticity detection unit 3 are configured in the light detection unit 22. It is. In FIG. 4, the same parts as those in FIG.

  Among the illuminometers 8 as linearly arranged optical sensors, the light detector 22 detects the illuminance as the light intensity by receiving the light from the marker lamp 9 in the middle illuminometer 8A in the intermediate embodiment. In addition, it has a function of detecting chromaticity. The illuminance meters 8 and 8A are arranged on the screen 7 so that the illuminance meter 8A can be positioned at the center of the predetermined light distribution pattern 18 of the marker lamp 9 when the gantry 10 (the marker lamp 9) is rotated. Is arranged linearly on one surface 7a.

  The illuminometers 8 excluding the illuminometer 8A are connected by a daisy chain, and each detected illuminance is output to the light distribution measurement control unit 5 as a light reception signal. The illuminance meter 8A is connected to the light distribution measurement control unit 5 alone and outputs the detected illuminance and chromaticity to the light distribution measurement control unit 5 as a light reception signal and a chromaticity reception signal, respectively.

  The light distribution measuring device 21 can simultaneously measure the light distribution pattern and the chromaticity of the marker lamp 9 to be inspected, and can correctly measure the chromaticity at the center of the predetermined light distribution pattern 18.

  The above-described embodiment of the present invention has been presented as an example, and is not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1,21 ... Light distribution measuring apparatus 2,22 ... Light detection part, 3 ... Chromaticity detection part, 4 ... Stand control part, 5 ... Light distribution measurement control part, 6 ... Data processing part, 7 ... Screen, 8 ... Illuminance meter as an optical sensor, 9 ... Aerial beacon light as a sign light, 10 ... Stand

Claims (3)

A light detection unit for detecting light intensity by receiving light from a marker lamp mounted on the pedestal with a linearly arranged light sensor;
A chromaticity detection unit that is detachably disposed on a horizontal axis passing through the center of a predetermined light distribution pattern of the marker lamp, and detects chromaticity by receiving light from the marker lamp;
A gantry controller that rotates a gantry on which the marker lamp is mounted according to a predetermined light distribution pattern of the marker lamp;
The indicator lamp is turned on with a predetermined light distribution pattern, and a light reception signal from the light detection unit is generated from the start point to the end point of the rotation angle every time the pedestal rotates by a predetermined rotation angle. A light distribution measurement control unit that obtains a chromaticity reception signal from the chromaticity detection unit;
Based on the light reception signal from the light detection unit obtained by the light distribution measurement control unit and the rotation angle of the gantry, a planar light distribution pattern of the marker lamp is obtained, and from the chromaticity detection unit A data processing unit for obtaining chromaticity of the marker lamp based on a chromaticity reception signal;
A light distribution measuring device comprising: The light sensor arranged in a straight line receives the light from the marker lamp mounted on the gantry to detect the light intensity, and the intermediate photo sensor arranged in a straight line detects the color of the light from the marker lamp. A light detection unit having a function of detecting the degree;
A gantry controller that rotates a gantry on which the marker lamp is mounted according to a predetermined light distribution pattern of the marker lamp;
The indicator lamp is turned on with a predetermined light distribution pattern, and a light reception signal from the light detection unit is generated from the start point to the end point of the rotation angle every time the pedestal rotates by a predetermined rotation angle. And a light distribution measurement control unit for obtaining a chromaticity reception signal;
Based on the light reception signal from the light detection unit obtained by the light distribution measurement control unit and the rotation angle of the mount, a planar light distribution pattern of the marker lamp is obtained, and on the basis of the chromaticity reception signal. A data processing unit for obtaining the chromaticity of the marker lamp;
A light distribution measuring device comprising:   The light distribution measuring device according to claim 1, wherein the light detection unit outputs a light reception signal as a digital signal.

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