JPH07286896A - Traveling-type photometry device - Google Patents

Abstract

PURPOSE:To accurately specify an object requiring maintenance while measuring and moving using a vehicle for improving the maintenance property of a lighting device such as a runway center line lamp in the runway, etc., of an airport. CONSTITUTION:The device is provided with a vehicle 3 which can travel freely to a lighting facility 1 with a plurality of lighting devices 2 having light emission parts 2F and 2B for emitting light while they are laid out at a specific spacing, brightness meters SF and SB for detecting the brightness of the light emission parts 2F and 2B of the lighting devices 2 to be measured which are mounted at the vehicle 3 and have an aperture long in the direction perpendicular to the advance direction, and a position detection means for detecting the relative position of the above brightness meters SF and SB for the lighting device 2 to be measured while being mounted to the above vehicle 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile photometric device suitable for maintenance of illuminating devices such as marker lights and guide lights such as runway center line lights used in airports and the like.

[0002]

2. Description of the Related Art For example, at airports, in order to guide takeoff and landing of aircraft, illuminating devices such as runway center line lights and runway lights are arranged at predetermined intervals (for example, 15 m intervals) on the runway. In this case, for example, the runway centerline lamp is a buried type that projects from the ground surface by about 15 mm, and the runway light is a ground type that projects further from the ground surface. In addition, since the aircraft takes off and land toward the wind on the runway, each runway centerline light and each runway light is symmetrical in both the front and rear directions along the installation direction so that it can be seen from any runway. Light emitting part (lens part) that emits light as guide light
Is set to have.

Due to the nature of such lighting facilities, it is always required to maintain a guided lighting function at a certain level or higher, and it is necessary to avoid not only the bulb burnout but also the decrease in brightness. Measurement is required.
Therefore, in the past, the entire airport was divided into, for example, four blocks, and a plurality of lighting devices (runway centerline lights, runway lights, etc.) were removed from their installation locations for each block, and a dedicated lighting measurement device provided 5 points. There is a method in which the illuminance of each is inspected by a method such as a method and is returned to the original state again.
According to the guidelines established by the International Civil Aviation Organization (ICA0), such inspections should be performed at least once every three months.

However, when each lighting device is removed from its installation location in this way, it must be removed from a vast area such as a runway of 4000 m or more, and a lighting device which is complicated and does not cause any trouble is also removed. Must be removed,
The inspection time is wasted, resulting in poor measurement efficiency.

In consideration of such a point, an illuminance meter is mounted at the rear of an aerial lighting photometering vehicle, and the illuminance of the illumination device to be measured is measured by the illuminance meter while moving along the illumination device. JP-A-4-36363 discloses a device that can measure illuminance easily and efficiently without removing the device.
No. 2 publication.

[0006]

Considering the decrease in brightness of this kind of lighting device, for example, a light emitting part (e.g., rubber dust of an aircraft tire due to the passage of operating time) or other foreign matter ( There is a cause such as dirt on the lens part) and adhesion of grass on the grass near the runway to the surface of the light emitting part.For these causes, in order to constantly maintain and secure a light output above a certain level, the lens Maintenance such as wiping (cleaning) of the part surface is required.

It is troublesome and time-consuming to carry out such a maintenance for every lighting device at the airport one by one, and since there are many things without dirt, it is wasteful and inefficient. Therefore, there is a demand for a movable photometric device that can identify an illuminating device that is dirty and needs to be wiped off the lens surface.

Here, when considering the application of the mobile photometric device as in the above publication, the illuminance meter mounted on the aviation light photometric vehicle is used for the illuminating device to be measured. Since the brightness is detected and the influence of ambient light or the like is great, the illumination state (that is, dirt is included) of the illumination device itself cannot always be accurately grasped. In particular, at airports, the apron lighting, other lighting devices that are not subject to measurement, and the factors of ambient light such as moonlight cannot be ignored, and their effects are complicated. It is unsuitable for identifying lighting devices that require surface wiping.

[0009]

According to a first aspect of the present invention, there is provided a mobile photometric device which is movable with respect to a lighting facility having a plurality of lighting devices each having a light emitting portion which emits light and which are arranged at predetermined intervals. A luminance meter that is mounted on the vehicle and that has an aperture that is set to be oblong with respect to the traveling direction and that detects the luminance of the light emitting unit of the illumination device that is the measurement target; Position detecting means for detecting the relative position of the luminance meter with respect to the target illumination device is provided.

According to a second aspect of the present invention, there is provided the mobile photometric device according to the first aspect, which is an illumination device having a light emitting portion that emits symmetrical light in both front and rear directions along the arrangement direction. Luminance meters were mounted on the front and rear surfaces of the vehicle, respectively.

According to a third aspect of the present invention, there is provided a mobile photometric device having a plurality of brightness meters in the mobile photometric device according to the first or second aspect, in which a horizontally long aperture is overlapped by a size larger than a light emitting portion. It is composed of a brightness sensor.

According to a fourth aspect of the present invention, in addition to the mobile type photometric device according to any one of the first to third aspects, the detected luminance detected by the luminance meter is a reference luminance set in advance. The comparison means for comparing and the alarm means for issuing an alarm when the detected brightness is equal to or lower than the reference brightness by the comparison by the comparison means are provided.

According to a fifth aspect of the mobile photometric device, the aperture of the luminance meter in the mobile photometric device according to any one of the first to fourth aspects is a variable vertical aperture type.

According to a sixth aspect of the mobile photometric device of the present invention, in the mobile photometric device of the first aspect, the lighting device is an embedded marker light that is arranged at an inward angle with respect to the runway centerline. And an inward angle measuring means for measuring the inward angle of the embedded marker lamp based on the output of the luminance meter at the position where the embedded marker lamp to be measured is detected by the position detecting means.

According to a seventh aspect of the present invention, there is provided the mobile photometric device according to the first aspect, in which the lighting device is disposed with a preset inward angle with respect to the runway centerline. As a built-in indicator light, a luminance meter attitude changing means is provided to make the luminance meter mounted on the vehicle face the central axis of the embedded indicator light to be measured.

[0016]

According to the first aspect of the present invention, in the movable photometric device, a proper relative positional relationship of the luminance meter to the illuminating device to be measured is secured based on the position detection by the position detecting means under the moving condition of the vehicle. Therefore, because the brightness of the light emitting part of the lighting device to be measured is detected by the brightness meter,
By accurately grasping the presence or absence of stains on the light emitting unit itself, it becomes possible to specify the lighting device that requires maintenance.

In the mobile photometric device according to the second aspect, since the luminance meters are mounted on the front surface and the rear surface of the vehicle respectively, the illuminating device having a light emitting portion that emits symmetrical light in both front and rear directions is provided. The measurement efficiency can be improved because the vehicle can be measured only by moving in one direction without moving the vehicle back and forth along the arrangement direction of the lighting device for measurement.

In the mobile photometer according to the third aspect of the invention, since the luminance meter is constituted by a plurality of luminance sensors in which the horizontally long aperture is overlapped by a size larger than the light emitting portion, the luminance meter is constituted. It suffices if the measurement can be performed within the viewing angle of the brightness sensor, the viewing angle is substantially widened, and the miss of the illumination device to be measured due to the deviation of the running line at the time of measurement due to vehicle running is reduced, It is possible to drive without worrying about the deviation, and the measurement operability is good.

In the mobile photometric device according to the fourth aspect of the present invention, since the detection brightness detected by the luminance meter is compared with the reference brightness by the comparison means and the alarm means issues an alarm when the brightness is less than the reference brightness, a large number of illuminations are provided. While sequentially measuring the brightness of the light emitting part of the device, it will be possible to identify and notify on the spot what needs maintenance such as wiping,
The maintainability can be improved.

In the mobile photometric device according to the fifth aspect, since the aperture of the luminance meter is of a variable vertical aperture type, for example, it becomes possible to measure the contamination of the light emitting part according to the mode, and the information to be detected. It will be very flexible to deal with.

In the mobile photometric device according to the sixth aspect, when the illumination device to be measured is an embedded marker lamp arranged so as to have an inward angle with respect to the runway center line, its brightness is detected. The inclining angle is measured by the inward angle measuring means based on the change in the output of the luminance meter at the position where the embedded marker lamp to be measured is detected. It is possible to confirm whether the arrangement is within the specified angle range.

In the mobile photometric device according to the seventh aspect, in the case where the illumination device to be measured is an embedded marker lamp arranged with a preset inward angle with respect to the runway center line. , The output value of the luminance meter fluctuates depending on where in the horizontally long aperture the embedded marker lamp is captured during photometry.
Since the luminance meter attitude varying means causes the luminance meter to face the central axis of the embedded marker lamp, photometry can be performed without being affected by the inward angle.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. In this embodiment, a number of runway centerline lights (illumination devices) 2 are attached to a runway 1 such as an airport 15 for example.
It is applied for maintenance of a lighting facility which is embedded at a predetermined interval such as every m. Each of the runway centerline lights 2 has a lens portion (light emitting portion) so as to emit symmetrical light in both front and rear directions of the installation direction (aircraft running direction).
With 2 _F and 2 _B , it is configured to handle takeoffs and landings from either direction. In the present embodiment, it is necessary to perform maintenance by measuring the brightness of the lens portions 2 _F and 2 _B of the large number of runway centerline lights 2 while driving the aerial light fire photometer 3 which is a vehicle. Is configured so that it can be determined. The photometric work should be performed at night considering the operation of the aircraft.

First, the aviation light metering car 3 is, for example, a right-hand drive wagon car, and a luminance meter S _F is attached to the front surface of the vehicle in a state of protruding forward, and a luminance meter S _B is also rearwardly mounted on the rear surface portion. It is installed in a protruding state. Each of these luminance meters S _F and S _B has a plurality of luminance sensors S _F1 , S _F2 , S _B1 and S _B2, as shown in FIG. They are arranged side by side, and they are attached so that their centers are located on a substantially extended line L of the center of the steering wheel 4 of the aviation light photometric vehicle 3. This is because it is very difficult to align the position right above the runway centerline lamp 2 with the center of the aviation light metering car 3 when the aviation light metering car 3 is driving, so that the center of the steering wheel 4 is substantially extended along the traveling direction. So that it is on line L
The luminance meters S _F and S _B are arranged offset. Here, luminance meter S _F of the front side each runway center line lights 2
At the rear side (front side when viewed from the traveling direction), the luminance of the lens portion 2 _B that emits the guide light is detected, and the luminance meter S on the rear side is detected.
_B is assigned to detect the brightness of the lens portion 2 _B that emits the guide light forward (to the rear side when viewed from the traveling direction) in the runway centerline lamp 2. In addition, these luminance meters S
_F and S _B are slightly below the vehicle in consideration of the irradiation angle of the runway centerline lamp 2 (it is designed to irradiate light only in the range of 0 ° to 10 ° including the sub-optical column range). Is set to be located in. Practically, each of these luminance meters S _F and S _B is installed on a fine movement table (not shown), and the aiming angle is movable.

Further, the aviation light photometric vehicle 3 is provided with a vehicle speed sensor 5 (see FIG. 7) which outputs a pulse output from an encoder provided on its shaft and serves as a position detecting means. As a result, the running distance is calculated using the speed pulse output to the speedometer of the vehicle that is output according to the rotation speed of the shaft, and the runway centerline lamp 2 to be measured is measured.
Lens part 2 _B and luminance meter S _F , lens part 2 _F and luminance meter S
It is configured to be used to judge whether or not the relative position with respect to _B has a distance relationship suitable for measurement (whether at a measurement timing described later).

By the way, the above-mentioned brightness sensors S _F1 , S
Each of _F2 , S _B1 and S _B2 has an elongated rectangular aperture 6 which is horizontally long with respect to the traveling direction as shown in FIG. Here, these brightness sensors S _F1 ,
The output waveforms of S _F2 , S _B1 , and S _B2 have a great influence on the luminance detection together with their installation locations and aiming angles. This output waveform is mainly due to the light emitting area of the runway centerline lamp 2 when the light emitting portion 2 _F or 2 _B is viewed, the speed of the aviation light photometric vehicle 3, and the brightness sensors S _F1 , S _F2 , S It is determined by the solid angle of the aperture 6, which is the measured solid angle of _B1 and S _B2 . Further, the larger the outputs of the brightness sensors S _F1 , S _F2 , S _B1 and S _B2 are, the light emitting section 2 of the runway center line lamp 2 is increased.
The detection of _F and 2 _B becomes easier, and the sharper the output waveform, the smaller the error. Further, since the brightness sensors S _F1 , S _F2 , S _B1 , and S _B2 have a structure in which the brightness of the image in the aperture 6 formed on the silicon element is averaged in the aperture 6, In order to increase the output, it is necessary to make the area ratio of the light emitting parts 2 _F and 2 _B of the runway centerline lamp 2 as small as possible, and in this way, the light emitting part 2 of the runway centerline lamp 2 is _The output waveform can be sharpened by making the area ratio of _F and _{2B to} the light emitting area as small as possible. On the other hand, if the area of the aperture 6 is reduced, there is a case where the light from the light emitting parts 2 _F and 2 _B cannot be picked up (missed or missed reading) when the aviation light photometric vehicle 3 shakes left and right.

Therefore, here, the length of the aperture 6 in the vertical direction, that is, the short side direction is minimized in order to minimize the error in the brightness detection in consideration of the sharpening of the output waveform and the missed reading of light. The longitudinal direction of the aperture 6 is arranged so that the light from the light emitting parts 2 _F and 2 _B can be picked up even if the aviation light metering vehicle 3 is slightly displaced to the left and right. The length of the aperture 6 is maximized. Practically, the viewing angle in the longitudinal direction of each aperture 6 is set to be, for example, 5 °. Here, in the luminance meter, the aperture means a portion for measuring in the visual field (finder), that is, a portion for detecting light, and the viewing angle means an angle of such an aperture itself. .

Further, in the present embodiment, the brightness sensors S _F1 , S _F2 , which form a pair to constitute the brightness meters S _F , S _B , respectively.
The apertures 6 of S _B1 and S _B2 are arranged so that their viewing angles overlap in the longitudinal direction. For example, the brightness sensor S _F1 constituting a luminance meter S _F, when taking aperture 6 _F1, 6 _F2 for S _F2 as an example, as shown in FIG. 4, the viewing angle of the apertures 6 _F1, 6 _F2 is longitudinal Overlapping in direction. These apertures 6 _F1 , 6 _F2
As shown in FIG. 5 (c), the overlap amount of the lens unit 2 _B to be measured by these luminance sensors S _F1 and S _F2 is
It is set to be larger than the size of.

According to the overlapping structure of the apertures 6 _F1 and 6 _F2 , the aviation light metering car 3 is driven so that the steering wheel 4 substantially coincides with the line of the runway center line lamp 2. At the time of measurement, the lens portion 2 _B to be measured is, for example, the aperture 6 _F1 or 6 _F2 (hence, the brightness sensor S _F1 or S _F2 ) in any of the states illustrated in FIGS. Will be captured. In this case, when the output waveforms of the brightness sensors S _F1 and S _F2 are monitored by the voltmeters 7 _F1 and 7 _F2 , the output Vout waveform as shown in FIG. 6 is displayed according to the captured position of the lens unit 2 _B. . That is, there may be a difference in the output Vout of both voltmeters 7 _F1 and 7 _F2 depending on the captured position of the lens portion 2 _B. Therefore, by comparing these analog outputs, whichever luminance sensor S _F1 or S
It becomes possible to select whether to enable the output of _F2 .

For example, in the states shown in FIGS. 5 (a) and 5 (b), since the output on the voltmeter 7 _F2 side is larger in any case, the luminance output detected by the luminance sensor S _F2 via the aperture 6 _F2 is effective. In each of the states shown in (d) and (e) of the figure, the output on the voltmeter 7 _F1 side is larger, so the luminance output detected by the luminance sensor S _F1 via the aperture 6 _F1 is effective. Since the outputs of the voltmeters 7 _F1 and 7 _F2 are equal in the state shown in FIG. 7C, it is determined that the luminance output detected by any of the luminance sensors S _F1 and S _F2 may be treated as valid. it can. After all, the combination of these
This means that the viewing angle can be expanded substantially as compared with the case where the brightness sensor S _F1 or S _F2 is used alone, and the lens portion 2 _B of the runway center line lamp 2 is missed (missed) due to the lateral shift of the running line. Air light metering car 3
As a driver, the driver can drive without worrying about the deviation of the traveling line, and the operability is improved.

Such an aperture overlapping structure is the same on the side of the apertures for the brightness sensors S _B1 and S _B2 which form the brightness meter S _B , and is equal to or larger than the size of the lens portion 2 _F to be measured. They are overlapped in the longitudinal direction with an overlap amount.

Next, the schematic configuration of the control system will be described with reference to the block diagram of FIG. First, the brightness sensors S _F1 , S
A / D converters 8 to 11 are provided for converting the analog output detected by _F2 , S _B1 and S _B2 into a luminance output which is a digital signal. The outputs of the A / D converters 8 and 9 are input to the comparator 12 and the selector 13, and as a result of the comparison of the detected brightness outputs by the brightness sensors S _F1 and S _F2 , the larger detected brightness is selected by the selector 13 and output. It is configured to be. That is, as described with reference to FIG. 5, the luminance sensor S whose detection target is the same lens portion 2 _{B.
In F1} and S _F2 , it is determined automatically which output is valid, and the more appropriate output is taken out. Similarly, the comparator 14 and the selector 15 are connected to the output sides of the A / D converters 10 and 11. Further, the selected detected luminance output which is the output of the selector 13 is input to the comparator (comparing means) 16. The comparator 16 compares the reference brightness information V _REF of each lens unit 2 _B preset based on the initial measurement or the like with the detected brightness information input from the selector 13, and compares the comparison result with the control unit. It is output to 17. The selected detected luminance output which is the output of the selector 15 is also input to the comparator (comparing means) 18. This comparator 18 is also used for each lens unit 2F preset based on, for example, the initial measurement. Of the reference luminance information V _REF and the detected luminance information input from the selector 15 are compared, and the comparison result is output to the control unit 17. This reference luminance information V _REF is set so as to ensure the light output level required for induction lighting,
When the surfaces of the lens portions 2 _B and 2 _F are soiled, the emission luminance thereof becomes lower than the reference luminance information V _REF depending on the degree of the soiling. The control unit 17 controls the entire measurement operation, and when a comparison result that the detected luminance information is smaller than the reference luminance information V _REF is obtained from the comparator 16 or 18, a buzzer, or a buzzer is supplied via the interface 19. Alarm devices such as warning lamps (alarm means) 20
Through the lens section 2 _B or 2 _{F of the} runway center line lamp 2
Controls to issue an alarm indicating that wiping maintenance is required. This makes it possible to identify the runway centerline lights 2 that require maintenance at the site on the runway where a large number of runway centerline lights 2 are installed.

A personal computer (personal computer) 51 is connected to the control unit 17 via an interface 50.
Is connected, the measurement data as described above is sent to the personal computer 51, and the measured values of each lamp can be output by the display 52 and the printer 53.

The brightness sensors S _F1 , S _F2 , S _B1 and S _B2
The analog output of is output to the comparators 12 and 14 from time to time by the A / D converters 8 to 11, but an element that holds only the peak value and performs sampling output may be used.

By the way, in the measurement operation in a vast place such as an airport runway, the brightness sensors S _F1 , S _F2 ,
It is not a good idea to keep S _B1 and S _B2 in the sensor-on state at all times, and it is not a good idea to do so. Is used, and the control unit 1
7, the brightness sensor S via the interface 21 or the like
The on-timing of _F1 and S _{F2 and} the on-timing of the brightness sensors S _B1 and S _B2 are timing-controlled.

That is, since the installation distance interval of the runway centerline lamp 2 and the like are predetermined, if the current position of the aviation light photometric vehicle 3 is grasped based on the vehicle speed pulse from the vehicle speed sensor 5, how much more will be left? Since it is possible to know whether the brightness sensors S _F1 and S _F2 have a relative positional relationship suitable for brightness measurement with respect to the lens portion 2 _B of the runway centerline lamp 2 in the front, which is a detection target,
As shown in FIG. 8, by turning on the brightness sensors S _F1 and S _F2 at a timing that allows for a margin, the brightness of the lens portion 2 _B of the runway centerline lamp 2 in front can be reliably measured. Further, regarding the brightness measurement of the lens portion 2 _F of the front runway centerline lamp 2, the lens portion 2 _{F after} the aviation light photometric vehicle 3 has passed over the front runway centerline lamp 2.
Considering the timing of the relative positional relationship suitable for the luminance measurement with respect to _F , as shown in FIG. 8, the luminance sensors S _B1 and S _B2 are turned on at a timing that allows for a margin, so that the position is rearward. The brightness of the lens portion 2 _F of the runway centerline lamp 2 to be measured can be reliably measured.

Incidentally, the vehicle speed pulse from the vehicle speed sensor 5 may be slightly different depending on the tire air pressure, the remaining amount of gasoline, etc. Therefore, in order to improve the accuracy, a device as shown in FIG. 9 is used. Good. That is, a pulse counter 23 for counting the number of vehicle speed pulses is connected to an encoder 22 for inputting vehicle speed pulses, and a start button 24 for instructing to start counting of vehicle speed pulses and a stop button 25 for instructing to end counting of vehicle speed pulses. A display device 26 for displaying the counted number of vehicle speed pulses on the pulse counter 23 is connected to the control unit 17. Therefore, between the two preset points, for example, a distance of 500 to 3000 m on the actual runway, operate the start button 24 at the start point to run the runway centerline lamp 2 in a straight line and stop at the stop point. By operating the button 25, the number of vehicle speed pulses during that time is measured by the pulse counter 23.
Then, it is determined whether or not the counting result is a number corresponding to the distance. If the counting result corresponds to the actual mileage, it is determined that there is no error in the vehicle speed pulse.If it does not correspond, the error is detected and the vehicle speed pulse corresponding to the actual mileage is calculated and corrected. The correction coefficient is taken into the control unit 17 as a coefficient. By regularly performing such vehicle speed pulse confirmation measurement, the error of the vehicle speed pulse can be always absorbed.

Incidentally, in order to accurately grasp the position of the runway centerline lamp 2 itself, as shown in the above-mentioned publication, for example, one side of the position corresponding to the runway centerline lamp 2 on the runway. An infrared light emitting device that emits a beam of infrared light is arranged on the side surface of the aviation light photometric vehicle 3, and an infrared sensor having a vertically long slit-shaped aperture perpendicular to the traveling direction is attached to Infrared rays may be received by this infrared sensor.

Now, the viewing angle of the aperture 6 will be examined in more detail. As described above, the luminance meter has the property of averaging the luminance of the measured portion in the aperture and using it as the luminance in the aperture. Here, the lens part 2 which is the light emitting part of the runway center line lamp 2 to be measured
The shapes of _B and 2 _F are trapezoidal as shown in FIG. 5 and the like. Lens part <Aperture. Lens section ≈ aperture. Lens> Aperture is classified into three types of photometry.

Among these, in order to accurately measure the luminance of the lens portion, the method of must be adopted. But,
Due to the nature of moving photometry, if the aperture is made small, there is a high possibility that the lens part to be measured may be missed. In view of this, in the present embodiment, as described above, the aperture 6 is basically formed in a horizontally elongated shape to reduce the probability of omission of left and right.

Such an aperture 6 is composed of a horizontal aperture 6a in the long side direction and a vertical aperture 6b in the short side direction. When focusing on the vertical aperture 6b, the method of photometry is the same as in the above case. ． Lens part <vertical aperture b. Lens section ≒ Vertical aperture c. Lens> Vertical aperture is classified into 3 types. Here, when a uniform luminance plane is measured, the output in each of these cases a, b, and c is shown in FIG.
This is what is shown in 0.

According to the characteristics shown in FIG. 10, in order to faithfully measure the luminance of the uniform luminance surface, the size of the vertical aperture should be the same as that of the object to be measured (that is, the lens portion). Or it turns out that it should be made smaller.
However, if the vertical aperture is smaller than the object to be measured, the time width is reduced, which affects the data sampling. Therefore, in order to determine the viewing angle of the vertical aperture 6b, there are contradictory conditions that the width of the analog output of the luminance sensor can be sampled and the width of the waveform is narrowed so as to minimize the luminance detection error. Need to consider to meet.

Then, the brightness of the new runway centerline lamp 2 is measured while moving by the aviation light metering car 3, and each run is compared with the output data (corresponding to the reference brightness information V _REF mentioned above). Consider a case where the degree of output reduction due to dirt or the like on the lens portions 2 _F and 2 _B of the road center line lamp 2 is measured. Here, as the aspect of dirt, A. When the whole lens part is uniformly soiled (adhesion of dust, etc.) B. It is divided into cases where dirt is attached to part of the lens part (such as adhesion of grass). At this time, for the stain of the form A,
Both of the above b and c are effective, and c is effective for the stain of the form B, but as described above, if the vertical aperture 6b is made too narrow, the time width of the output waveform decreases. Moreover, the data sampling interval must be shortened, and as a result, the number of data that can be obtained increases.

Therefore, if an appropriate aperture, particularly a vertical aperture, is selected and used for each type of stain to be detected, more detailed measurement can be performed. That is, normally, the dirt mode is set to the above A or B.
It is expected that the above cases are mixed, that is, the stain is spread over the entire lens surface, but the stain is attached to each part. In this case, the size of the vertical aperture is a. Lens part <vertical aperture c1. Lens part> Vertical aperture c2. Lens part >> There are three types of vertical apertures, and the relationship between the detected brightness by these a, c1 and c2 and the reference brightness is shown in FIGS. 11 (a) to 11 (c).

According to FIG. 11, when the vertical aperture is much smaller than the lens surface (case c2), the dirt on the lens surface is measured so that there is a considerable difference between the reference luminance and the waveform. On the contrary, in the case a, although the output voltage value is low, the waveforms are almost the same due to the structure of the luminance meter that averages the luminance in the aperture. Also, although the vertical aperture is smaller than the lens surface, case c2
When it is larger than that (case c1), the difference in the waveform is recognized, but it is smaller than that in case c2.

Therefore, it is considered that the inflection point of the waveform is the case where the lens surface and the vertical aperture have the same size. Therefore, by comparison with the reference brightness,
When determining the stain, if the vertical aperture is made larger than the lens surface, it can be easily determined without converting or arranging the data.

Here, the data conversion and arrangement means various processing methods such as taking an average value of a waveform, taking an integral value, and taking an intermediate value between a maximum value and a minimum value. By taking it, the result of case c2 can also be utilized.

Although different apertures, especially different vertical apertures, can be selected and used at the same time, in the present embodiment, the vertical aperture is set as the aperture 6 so that the aspect of the stain to be detected can be easily dealt with. 6
A vertical aperture variable type having a variable view angle b is used. Since such a vertical aperture variable type aperture itself is known, its details are omitted. As a result, for example, it becomes possible to easily and appropriately deal with the measurement such that only the stain detection in which the lens units 2 _F and 2 _B are entirely soiled is performed, and the flexibility is high.

Next, FIG. 12 shows a second embodiment of the present invention.
Through FIG. 18. The same parts as those shown in the above embodiment are designated by the same reference numerals, and the description thereof will be omitted. In the above-described embodiment, the runway centerline lamp 2 arranged so that the centerline of the runway 1 and the centerline of the lamp match each other is used as the illumination device to be measured. Some beacon lights have an inward angle with respect to the runway 1 centerline.
According to the international standard of the International Civil Aviation Organization, the approach light side row bullets, end lights, end wing bars, ground strip lights, runway lights, etc. should be installed with preset inward angles of the international standard. Stipulated in. That is, as shown in the airport layout of FIG. 12, there are various types of lamps depending on the installation location, and the beam angle is determined for each type of lamp, realizing the optical characteristics as a marker lamp. I am trying to do it. In FIG. 12, 2 is the runway centerline lamp shown in the above embodiment, 31 is the center approach lamp, and 32 is the taxiway centerline lamp, which are arranged without any inward angle.
Further, in FIG. 12, 33 is an approach light side row bullet, 34 is a terminal light, 35 is a runway ground strip light, and 36 is a runway light,
These are arranged with an inward angle.

A lamp unit having such an inward angle, for example, a lens section (light emitting section) of an embedded marker lamp which is a runway grounding zone lamp 35
In the case of measuring 41 while moving with a luminance meter S having a horizontally long aperture 6 as shown in FIG.
As shown in, the output value changes depending on where in the aperture 6 the lens portion 41 is captured. this is,
The position of the lens portion 41a in the aperture 6 of the luminance meter S is merely looking at the apparent lens portion 41a, and in reality, the light emitted from the lens portion 41 has a certain spread. Therefore, as shown in FIG.
As shown in (c), it depends on which position of this spread the light is measured. In addition, the range of the main light pole of the embedded marker light such as the runway grounding zone light 35 is standardized by the international standard, and in the embedded marker lights having the same installation position category, the photometric position and its position are set. It is possible to specify the luminance output value in. By arranging the embedded marker light at an inward angle according to the standard, the optical characteristics required for the marker light are realized, and the inward angle of the embedded marker light having an inward angle is realized. It is also necessary to check if they are arranged at the corners.

Therefore, the mobile photometric device of this embodiment is provided with a mechanism for estimating the inward angle of the embedded marker light having an inward angle, for example, the runway ground strip lamp 35. In addition, as shown in FIGS. 14 to 16, the brightness sensors S _F1 and S _F2 on the front surface side of the aviation light photometric vehicle 3 are slidably held in the left and right horizontal direction by a displacement mechanism (displacement means) 42, and the left and right horizontal The positions of these brightness sensors S _F1 and S _{F2 in} the direction can be varied.
This displacement mechanism 42 holds a rail portion 43a of a support arm 43 extending forward from the aviation light photometric vehicle 3 and a luminance sensor S _F1 , S _F2 slidable horizontally along the rail portion 43a. And the holding body 44. This holding body 44 is formed by a well-known fixing means (for example, a lock mechanism using screws, pinions, gears, etc.)
It can be manually positioned at an arbitrary position on the rail portion 43a (of course, it is also possible to use a drive source such as a motor to automatically perform sliding displacement and stop positioning). .

Further, instead of the vehicle speed sensor 5 of the above-mentioned embodiment, in this embodiment, a position sensor 45 having a brightness sensor structure is used.
a and 45b are mounted on the holder 44 as position detecting means. As a result, at the positions where the position detection signals from the position sensors 45a and 45b that detect the position of the runway ground strip light 35 are received, the above-described brightness sensors S _F1 and S _F2 are detected.
With this configuration, the light of the runway ground strip lamp 35 can be measured. Regarding the brightness sensors having different uses, the position sensors 45a and 45b are separately mounted on the upper and lower sides of the holding body 44 so that the position sensors 45a and 45b gaze ahead of the glare points of the brightness sensors S _F1 and S _F2 . That is, four luminance sensors having the same structure are mounted on the holder 44.

Further, there is provided an inward angle measuring means for estimating the inward angle of the runway grounding strip lamp 35 to be measured based on the outputs of the brightness sensors S _F1 and S _F2 .

In such a configuration, the lens portion of the runway ground strip lamp 35 is located at a position where the position sensors 45a and 45b detect the runway ground strip lamp 35 to be measured while the aviation light photometer 3 is moving. 41 is captured by the aperture 6, and the brightness sensors S _F1 and S _F2 measure it. The outputs obtained from the brightness sensors S _F1 and S _F2 are compared with a database showing the relationship between the position of the lens portion in the aperture 6 and the brightness output value, which is held in advance, by the inward angle measuring means, and this runway is measured. It is possible to estimate the inward angle when the ground strip lamp 35 is provided. As a result, it can be determined whether or not the runway ground strip light 35 to be measured is arranged at a prescribed inward angle.

Further, regarding the embedded marker light having an inward angle, such as the runway grounding zone light 35, which is the object of measurement in this embodiment, when performing photometry while moving with the aerial light photometer 3, as described above, The output value varies depending on where in the aperture 6 the lens portion 41 is captured, and accurate photometry cannot be performed. Therefore, in the mobile photometer of this embodiment, the brightness sensors S _F1 and S _{F2 with} respect to the central axis M of the embedded marker light having the inward angle α, for example, the runway grounding band light 35.
A mechanism is added to directly measure the light. Therefore, as shown in FIG. 16 and FIG.
Attitude changing mechanism (brightness meter attitude changing means) 4 for holding the brightness sensors S _F1 and S _{F2 so} that their directions and positions can be changed.
6 is provided. The attitude changing mechanism 46 is configured such that the displacement mechanism 42, a horizontal rotation table 47 that is rotatable in a horizontal plane on the holder 44, and a horizontal rotation table 47 that is connected to the horizontal rotation table 47 and is rotatable in a vertical plane. The vertical rotation table 48 and the brightness sensors S _F1 and S _F2 are attached to the vertical rotation table 48. Therefore, by displacing horizontally in the left-right direction by the displacement mechanism 42, the orientation in the horizontal plane is changed by the rotation of the horizontal rotation table 47, and the angle in the vertical plane is changed by the rotation of the vertical rotation table 48. The postures of the brightness sensors S _F1 and S _F2 can be appropriately changed. In this embodiment, the brightness sensors S _F1 , S _F2
Also, the position sensors 45a and 45b are configured so that their postures are interlocked with each other and always point in the same direction. However, it is not always necessary that they are interlocked and directed in the same direction.

In such a configuration, the inward angle α of the runway grounding lamp 35 is predetermined by the standard, and at the time of photometry, the brightness of the runway grounding lamp 35 and the brightness of the runway grounding lamp 35 are determined based on the outputs of the position sensors 45a and 45b. The relative positional relationship (distance) with the sensors S _F1 and S _F2 is known. Therefore, the posture varying mechanism 46 is appropriately operated to displace the brightness sensors S _F1 and S _F2 so as to face the runway ground strip lamp 35 to be measured. This is schematically shown in FIG. As a result, it is possible to perform photometry that does not depend on the position of the lens portion 41a in the aperture 6. From the standpoint of the driver of the aviation light photometric vehicle 3, the center of the steering wheel 4 should always be located on the runway centerline without worrying about the inward angle α of the runway ground strip light 35 to be measured. It only needs to be run, which makes it easier to drive. Incidentally, if the brightness sensors S _F1 and S _F2 are returned to their original positions on the extension line L of the steering wheel 4, it goes without saying that it is possible to perform photometry of the lamp having no inward angle as described in the above embodiment. is there.

[0057]

According to the mobile photometric device of the present invention, the vehicle is movable with respect to a lighting facility provided with a plurality of lighting devices having light emitting portions which are arranged at predetermined intervals and emit light. A luminance meter that is mounted on the vehicle and that has an aperture that is set to be oblong with respect to the traveling direction and that detects the luminance of the light emitting unit of the illumination device that is the measurement target; Since the position detecting means for detecting the relative position of the luminance meter to the target lighting device is provided, the luminance meter for the lighting device to be measured based on the position detection by the position detecting means under the moving condition of the vehicle. Since the luminance of the light emitting part of the lighting device to be measured is detected by the luminance meter in a state where the proper relative positional relationship is secured, it is necessary to accurately grasp the presence or absence of dirt on the light emitting part itself and to perform maintenance. Can identify illumination device, it is possible the convenience of maintenance of the lighting facility.

According to the mobile photometric device of the second aspect of the present invention, in the mobile photometric device of the first aspect of the invention, an illuminating device having a light emitting portion that emits symmetrical light in both front and rear directions along the arrangement direction. Since the luminance meters are mounted on the front and rear surfaces of the vehicle respectively, the vehicle is reciprocated along the installation direction of the lighting device with respect to the lighting device having a light emitting section that emits symmetrical light in both front and rear directions. The measurement efficiency can be improved because the measurement can be performed only by moving in one direction without moving and measuring.

According to the mobile photometric device of the third aspect of the invention, the luminance meter of the mobile photometric device of the first or second aspect of the invention is such that the aperture set horizontally is larger than the light emitting portion. Since it is composed of multiple overlapping brightness sensors, it is sufficient to make measurements so that it falls within the viewing angle of one of the brightness sensors, which substantially widens the viewing angle. Since it is possible to reduce the omission of the illuminating device to be measured due to the deviation, it is possible to operate without worrying about the deviation of the traveling line, and the measurement operability is improved.

According to the mobile photometric device of the invention described in claim 4, in addition to the mobile photometric device of the invention described in any one of claims 1 to 3, the detected luminance detected by the luminance meter is detected in advance. Since the comparison means for comparing with the set reference brightness and the alarm means for issuing an alarm when the detected brightness is less than or equal to the reference brightness by the comparison by the comparison means are provided, the brightness of the light emitting parts of many lighting devices can be controlled. It becomes possible to specify and notify on the spot what needs maintenance such as wiping while sequentially measuring, and it is possible to improve maintainability in the lighting facility.

According to the mobile photometric device of the fifth aspect, the aperture of the luminance meter in the mobile photometric device of any one of the first to fourth aspects is a variable vertical aperture type. Therefore, for example, it becomes possible to appropriately measure the contamination of the light emitting unit for each mode, and the flexibility of handling the information to be detected becomes high.

According to the mobile photometric device of the invention described in claim 6, in the mobile photometric device of the invention described in claim 1,
The illuminating device is an embedded marker light arranged with an inward angle to the runway center line, and based on the output of the luminance meter at the position where the embedded marker light to be measured is detected by the position detection means. Since the inward angle measuring means for measuring the inward angle of the embedded marker lamp is provided, the illuminating device to be measured has an inward angle with respect to the runway center line. In this case, it is possible to confirm whether or not the inward angle of the embedded marker lamp is arranged within a specified angle range by using a luminance meter that detects the luminance.

According to a seventh aspect of the present invention, there is provided the mobile photometric device according to the first aspect, wherein the lighting device is arranged with a preset inward angle with respect to the runway centerline. Since the installed indicator light is provided, the luminance meter attitude changing means is provided so that the luminance meter mounted on the vehicle is directly opposed to the central axis of the embedded indicator light to be measured. However, even in the case of an embedded marker lamp that is arranged with a preset inward angle with respect to the runway centerline, photometry can be performed without being affected by the inward angle.

[Brief description of drawings]

FIG. 1 is a side view schematically showing a first embodiment of the present invention.

FIG. 2 is a plan view thereof.

FIG. 3 is a front view showing an aperture shape.

FIG. 4 is an explanatory diagram schematically showing a relationship between apertures of a brightness sensor and a detection system.

FIG. 5 is an explanatory diagram schematically showing an example of how to capture a lens unit.

FIG. 6 is a characteristic diagram showing an analog output of a brightness sensor.

FIG. 7 is a block diagram showing a schematic configuration of a control system.

FIG. 8 is a timing chart.

FIG. 9 is a block diagram.

FIG. 10 is a characteristic diagram showing an output state when the viewing angle of the vertical aperture is changed.

FIG. 11 is a characteristic diagram showing a relationship between reference luminance and detected luminance in various cases.

FIG. 12 is an explanatory diagram showing a layout of an airport for explaining the second embodiment of the present invention.

FIG. 13 is a schematic diagram showing a photometric state for explaining the dependency of the lens portion in the aperture in the case of a lamp having an inward angle.

FIG. 14 is a plan view of an aviation light photometric vehicle.

FIG. 15 is a side view thereof.

FIG. 16 is a configuration view showing a front surface, a side surface, and a plane of a holder portion mounted on an aviation light photometric vehicle.

FIG. 17 is a front view showing a configuration of a main part of a posture varying mechanism.

FIG. 18 is a plan view schematically showing a photometric state of a lamp having an inward angle.

[Explanation of symbols]

1 Lighting Facility 2 Lighting Device 2 _F , 2 _B Light Emitting Section 3 Vehicle 5 Position Detection Means 6 Aperture 16, 18 Comparison Means 20 Warning Means 33-36 Embedded Marker Light 41 Light Emitting Units 45a, 45b Position Detecting Means 46 Luminometer Attitude Change Means S _F , S _B Luminance meter S _F1 , S _F2 , S _B1 , S _B2 Luminance sensor

Claims (7)

[Claims] 1. A vehicle that is movable with respect to a lighting facility that includes a plurality of lighting devices that have light emitting units that emit light at predetermined intervals, and that is mounted on this vehicle and is laterally long in the traveling direction. A luminance meter having an aperture set to detect the luminance of a light emitting unit of a lighting device to be measured, and a relative position of the luminance meter mounted on the vehicle to the lighting device to be measured. A mobile photometric device, comprising: a position detecting means. 2. A lighting device having a light emitting portion that emits symmetrical light in both front and rear directions along the arrangement direction is a measurement target, and a luminance meter is mounted on each of a front surface and a rear surface of the vehicle. The mobile photometric device described. 3. The mobile photometric device according to claim 1, wherein the luminance meter comprises a plurality of luminance sensors in which a horizontally long aperture is overlapped by a size equal to or larger than a light emitting portion. 4. Comparing means for comparing the detected brightness detected by the luminance meter with preset reference brightness, and alarm means for issuing an alarm when the detected brightness is less than or equal to the reference brightness by the comparison by the comparing means. The mobile photometric device according to any one of claims 1 to 3, further comprising: 5. An aperture of the luminance meter is of a variable vertical aperture type.
The mobile photometric device according to any one of 1. 6. The illuminating device is an embedded marker light arranged at an inward angle with respect to the runway center line, and the brightness is detected at a position where the position detecting means detects the embedded marker light to be measured. The mobile photometric device according to claim 1, further comprising an inward angle measuring means for measuring an inward angle of the embedded marker light based on an output of the meter. 7. The illuminating device is an embedded marker light arranged with a preset inward angle with respect to the runway centerline,
2. The mobile photometric device according to claim 1, further comprising: a luminance meter attitude varying means for causing the luminance meter mounted on the vehicle to face the central axis of the embedded marker lamp to be measured.