JPH0719958A - Light measuring device and light measuring vehicle - Google Patents

Abstract

PURPOSE:To perform the inspection efficiently by detecting the lighting of a light emitting part of a lighting device to detect the position thereof, and analyzing the content of an image picked up by an image pick-up means. CONSTITUTION:An optical axis of a lighting device is detected by the output from a detecting means 4 of a light measuring vehicle, and a controller 3 counts the pulse number of car speed measured by a distance measuring means for measuring a distance from the optical axis. When the pulse number achieves a preset pulse number, an image pick-up means 8 is controlled for image pickup by an input time setting means 12. The image signal thereby obtained is A/D converted by a converting means 9, and stored with the accessory data in a storing means 10. Furthermore, the picked-up image is displayed in a monitor 11. A control means 6 (program) loaded on an analyzing means 2 compares a preset lighting reference value and the distribution of luminance or the like with the stored image data, and judges that the lighting device is under the predetermined lighting condition or not, and stores this data. Thereafter, the next lighting device is measured, and this operation is repeated till the number of measurement reaches a predetermined value. Inspection is thereby performed easily and efficiently.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photometric device and a photometric vehicle for measuring the illuminance of, for example, an airport lighting arranged at predetermined intervals.

[0002]

2. Description of the Related Art Conventionally, when measuring the illumination state of airport lightings such as runway lights and center line lights arranged at predetermined intervals on a runway of this type, the entire airport is divided into, for example, four blocks, and For each block, multiple airport lights are removed from the installation site, and a dedicated lighting measurement device is used to inspect the illuminance of each airport light by the 5-point method and restore it to its original state. This inspection must be conducted at least once every three months according to the guidelines set by the International Civil Aviation Organization (ICAO).

However, airport lights such as runway lights and center line lights have to be removed from a wide area of the runway of 4000 m or more, which is complicated, and since there are no problematic airport lights, it is wasteful. However, there is a problem that it takes a long inspection time and the measurement efficiency decreases.

Therefore, as described in, for example, Japanese Unexamined Patent Publication No. 4-363632, while moving the vehicle along the direction in which the airport lighting is arranged, airport lighting is performed by a luminance meter arranged in front of the vehicle. Detects the center of the optical axis in the front direction of the lamp, moves the vehicle to the light emitting part, and moves forward from the light emitting part in the front direction, and emits light to the front of the lighting device at this moved position. There is known a configuration in which the illuminance of a part is measured by an illuminometer provided on the rear surface of the vehicle and the illuminance is measured by the moving distance of the vehicle from the light emitting part.

[0005]

However, the one which measures the illuminance by the luminance meter and the illuminance meter provided at the front and rear of the vehicle described in Japanese Patent Laid-Open No. 4-363632 described above is substantially linear in two opposite directions. There is a problem in that the illuminance can be measured only for the airport lighting that illuminates the light, and the illuminance for the lighting that illuminates in only one direction cannot be measured.

Further, there is a problem that the structure of the vehicle for measuring the illuminance is complicated and the manufacturability is low, and the manufacturing cost is high.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a photometric device and a photometric vehicle that have a simple structure and can easily and efficiently perform an inspection regardless of the illumination direction. .

[0008]

A photometric device according to claim 1 is a photometric device for measuring the illuminance of an illuminating device, which is provided at predetermined intervals and has a light emitting part for irradiating light. Detecting means for detecting the position of the illuminating device by detecting illumination, imaging means for imaging the light emitting part of the illuminating device, and detecting light emitting part of the illuminating device by the detecting means, and imaging means for the light emitting part The control means for picking up an image and the analyzing means for analyzing the contents picked up by the image pickup means are provided.

According to a second aspect of the present invention, there is provided the photometric device according to the first aspect, further comprising input time setting means for varying the image pickup input time of the image pickup means.

According to a third aspect of the present invention, there is provided a photometric device according to the first or second aspect, further comprising storage means for storing characteristics of each type of illumination device in advance, and the analyzing means stores the characteristics stored in the storage means. This is to analyze by comparing with the actual measurement.

A photometric vehicle according to a fourth aspect comprises a traveling vehicle equipped with the photometric device according to any one of the first to third aspects, and distance measuring means provided on the traveling vehicle for measuring a traveling distance of the traveling vehicle. The control means is configured to allow the imaging means to capture an image of the predetermined distance measured by the distance measurement means after the position of the illumination device is detected by the detection means.

According to a fifth aspect of the present invention, there is provided a photometric vehicle according to the fourth aspect, further comprising a cleaning device for cleaning the lighting device when the analysis means analyzes that the lighting device has not reached a predetermined state. It is a thing.

[0013]

In the photometric device according to claim 1, the detecting means detects the illumination of the light emitting portion of the illuminating device arranged at a predetermined interval, the light emitting portion is imaged by the image capturing means, and the image is captured by the image capturing means. Since the contents are analyzed, it is possible to easily and efficiently inspect an illuminating device having a simple structure and only one illuminating direction.

In the photometric device according to claim 2, in the photometric device according to claim 1, the input time setting means varies the image pickup input time of the image pickup means, so that the inspection can be performed easily and efficiently regardless of whether the illumination device is bright or dark. Can be done.

According to a third aspect of the photometric device of the present invention, in the photometric device of the first or second aspect, the characteristics of each type of illumination device are stored in advance in the storage means, and the analysis means stores the characteristics stored in the storage means. In order to analyze by comparing with the actual measurement,
It is possible to easily analyze lighting devices having different characteristics.

A photometric vehicle according to a fourth aspect is a traveling vehicle equipped with the photometric device according to any one of the first to third aspects, further comprising distance measuring means for measuring a traveling distance of the traveling vehicle. After the position of the illuminating device is detected by the means, the predetermined distance measured by the distance measuring means is imaged by the imaging means after traveling, so that the illuminating device can be accurately imaged.

According to a fifth aspect of the photometric vehicle, in the photometric vehicle according to the fourth aspect, when the analyzing means analyzes that the lighting device has not reached a predetermined state, the washing device cleans the lighting device. Therefore, for example, the illumination device whose illuminance has decreased due to dirt is restored to the original characteristics.

[0018]

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

In FIG. 1 and FIG. 2, reference numeral 1 denotes a photometer for aviation lighting, which is equipped with a personal computer 2 as an analysis means, and a controller 3 is connected to the personal computer 2. ing.

Further, the controller 3 is connected with a luminance meter 4 as a detecting means, and the luminance meter 4 detects the light from the light emitting section 5 of the ground type lighting device. And
The luminance meter 4 is attached to a bumper on the front part of the photometric vehicle 1.

Further, a distance measuring means (not shown) is connected to the controller 3, and this distance measuring means outputs the photometric vehicle 1 once at about 10 cm by the rotation of the crankshaft when the photometric vehicle 1 travels. The vehicle speed pulse is detected.
The distance is measured by the number of counts of the vehicle speed pulse.

The controller 3 is connected to the personal computer 2 and takes in the luminance detected by the luminance meter 4 and the vehicle speed pulse detected by the distance measuring means and controls the personal computer 2. Is controlled by the control program 6.

On the other hand, 8 is a CCD (Char
ge Coupled Device) This CCD camera 8
Is attached to the front surface of the photometric vehicle 1 in a horizontal and vertical direction from the position where the luminance meter 4 is attached. Then, the CCD camera 8 outputs an image signal of an analog signal by the charge engagement element image sensor by imaging.

Further, an A / D (Analog / Digital) converter 9 as a converting means is connected to the CCD camera 8, and the image signal output from the CCD camera 8 by the A / D converter 9 is a digital signal. Is converted to. Further, an image memory 10 as a storage means is connected to the A / D converter 9, and a CCD camera 8 converted into a digital signal by the A / D converter 9 is connected to the image memory 10.
The image signal output from is stored.

The image memory 10 is connected to the monitor 11 for displaying the image signal converted into a digital signal, and the image signal stored in the personal computer 2 is analyzed by the control program 6 installed therein. It is supposed to be done.

Further, the CCD camera 8 is connected to a shutter controller 12 as an input time setting means connected to the personal computer 2, and the shutter controller 12 is set at a predetermined timing set by the personal computer 2. The CCD camera 8 is caused to capture an image of the light emitting unit 5 during the image capturing time.

Next, the measurement operation of the above embodiment will be described with reference to FIG.
Will be described with reference to.

The photometric work is performed at night with the headlights of the photometric vehicle 1 not lit in consideration of the influence of external light and the operation of the aircraft.

First, the power of each device is turned on, the measurement range of the luminance meter 4 and the opening time of the shutter controller, that is, the imaging time of the CCD camera 8 are set from the personal computer 2, and the photometric vehicle 1 is run.

Then, when the luminance meter 4 detects the light from the first illumination device, the personal computer 2
The optical axis of the illuminating device is detected based on the output intensity from the luminance meter 4, and the controller 3 measures the number of vehicle speed pulses by the distance measuring means (not shown) from the optical axis.

Next, at the time when the preset pulse number n is reached, that is, when the vehicle travels a predetermined distance, C
The shutter controller 12 controls the CCD so that the CD camera 8 takes an image at a preset imaging time.
The image is taken by the camera 8.

Then, the image signal of the analog signal output from the CCD camera 8 in this imaging is converted into a digital signal by the A / D converter 9, and the image signal converted into the digital signal is used as image data to form an image. Stored in the memory 10. Further, the image captured by the CCD camera 8 is displayed on the monitor 11.

Further, when storing the image signal, auxiliary data such as a number indicating the first measurement data is also stored.

The control program 6 installed in the personal computer 2 compares the stored image data with optical characteristics such as a luminance value and a luminance distribution which are preset and set as an illumination reference value for each type of illumination device. Then, it is determined whether or not the measured illumination device maintains a predetermined illumination state, and this data is also stored as attached data.

After that, the personal computer 2 again sets the measurement range of the luminance meter 4 and the opening time of the shutter controller 12 for the next measurement of the illumination device, and performs the measurement until the preset number of measurements is reached. repeat.

Even if the photometer 1 travels for a predetermined distance due to the shake of the photometer 1 or the lighting device is out of light such as a bulb break, the luminance meter 4
Does not detect the illuminating light, the number of the lighting device is increased by 1 when the count number of the vehicle speed pulse after the detection by the lighting device one unit before reaches the count number preset by the personal computer 2, I am trying to make various measurements.

Further, the reliability of the data may be improved by stopping at the time of the above-mentioned movement measurement and performing static measurement at an arbitrary set point. That is, in the stationary state, the vehicle of the photometric vehicle 1 does not shake, and accurate data is obtained.

When performing the stationary measurement,
The personal computer 2 is set to perform static measurement, the light from the light emitting unit 5 is measured by the CCD camera 8 together with the luminance meter 4, and these data are compared with the preset optical characteristic data of the illumination device. Brightness value,
The brightness distribution is calculated and the illumination state is analyzed.

Then, among the measured lighting devices, those judged not to have reached a predetermined illumination state are inspected, and the translucent protective cover of the lighting device is contaminated due to, for example, tire friction during takeoff and landing of the aircraft. , For those that have not reached the prescribed illumination state, clean the protective cover with cleaning means,
If the part is damaged, such as when the ball runs out, replace the part.

According to the above-described embodiment, the luminance meter 4 and the CCD camera 8 are attached to the front surface of the photometric vehicle 1 to control them.
Further, the illuminance can be easily measured by the traveling of the photometric vehicle 1 only by the device for storing and analyzing the measurement data. Furthermore, since the light from the front is detected and measured, even an illuminating device that illuminates in only one direction can be easily measured. Further, the photometric vehicle 1 can be easily manufactured with a simple structure.

Further, since the photographing time of the CCD camera 8 is arbitrarily set by the shutter controller 12, it is possible to easily and efficiently inspect regardless of whether the lighting device is bright or dark.

Further, since the optical characteristics of each type of illumination device are set in advance and the personal computer 2 compares and analyzes the preset optical characteristic and the actual measurement, even for illumination devices having different characteristics. Easy to analyze.

Further, in the personal computer 2,
After detecting the light from the light emitting unit 5 with the luminance meter 4, the photometer 1
Since the CCD camera 8 is controlled to capture an image after traveling a predetermined distance measured by a distance measuring unit for measuring the traveling distance provided in the vehicle, the illumination device can be accurately imaged.

It should be noted that in the case where the photometric car 1 is equipped with a cleaning means for cleaning the light-transmitting protective cover of the illuminating device, for example, having a brush rotated by an electric motor, a predetermined illumination state can be obtained from the measurement result. When it is determined that the cleaning speed has not been reached, the cleaning may be automatically performed at the time when the cleaning means reaches above the lighting device according to the count number of the vehicle speed pulse.

Therefore, by the automatic cleaning during the measurement, the measurement and maintenance management of the illumination device can be performed at one time, and the maintenance management can be facilitated.

[0046]

According to the photometric device of the first aspect, the detecting means detects the illumination of the light emitting portions of the illuminating device arranged at a predetermined interval, the light emitting portions are imaged by the image capturing means, and the image capturing means is used. Since the content captured by is analyzed, it is possible to easily and efficiently inspect even a lighting device having a simple structure and illuminating in only one direction.

According to the photometric device of the second aspect, in the photometric device of the first aspect, the image pickup input time of the image pickup means is varied by the input time setting means, so that the efficiency can be easily improved regardless of whether the illumination device is bright or dark. Can be well inspected.

According to the photometric device of claim 3, in the photometric device of claim 1 or 2, the characteristics for each type of illumination device are stored in advance in the storage means, and the analysis means is stored in this storage means. Since the characteristics and the actual measurement are compared and analyzed, it is possible to easily analyze even an illumination device having different characteristics.

According to the photometric vehicle of claim 4, claim 1
(3) A traveling vehicle equipped with the photometric device according to any one of (1) to (3) above is provided with distance measuring means for measuring the traveling distance of the traveling vehicle, and the control means measures the distance measuring means after detecting the position of the illumination device. Since the image capturing means captures the image of the predetermined distance after traveling, the illumination device can be imaged accurately.

According to the photometric vehicle of claim 5, claim 4
In the photometric vehicle described above, when the analysis device analyzes that the lighting device has not reached a predetermined state, the cleaning device cleans the lighting device. The characteristics of can be restored.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a photometric vehicle according to an embodiment of a photometric device and a photometric vehicle of the present invention.

FIG. 2 is an explanatory diagram illustrating a measurement operation of the same as above.

[Explanation of symbols]

1 Photometer 2 Personal computer as analysis means 4 Luminometer as detection means 5 Light emitting part 6 Control program as control means 8 CCD camera as image pickup means 9 A / D converter as conversion means 10 Image memory as storage means 12 Shutter controller as input time setting means

Claims (5)

[Claims] 1. A photometric device for measuring the illuminance of a lighting device, which is provided at predetermined intervals and has a light emitting part for irradiating light, wherein the detection detects the illumination of the light emitting part to detect the position of the lighting device. Means, imaging means for imaging the light emitting portion of the lighting device, control means for detecting the light emitting portion of the lighting device by the detecting means, and causing the light emitting portion to image by the imaging means, and imaging by the imaging means A photometric device characterized by comprising: an analyzing means for analyzing the displayed contents. 2. The photometric device according to claim 1, further comprising input time setting means for varying an image pickup input time of the image pickup means. 3. A storage means for storing characteristics of each type of lighting device in advance, and the analysis means compares and analyzes the characteristics stored in the storage means and analyzes the characteristics. 2. The photometric device described in 2. 4. A traveling vehicle equipped with the photometric device according to claim 1, and a distance measuring means provided on the traveling vehicle for measuring a traveling distance of the traveling vehicle, wherein the control means is a detector. A photometric vehicle characterized in that after the position of the illuminating device is detected by the means, a predetermined distance measured by the distance measuring means is imaged by the imaging means after traveling. 5. The photometric vehicle according to claim 4, further comprising a cleaning device for cleaning the lighting device when the analysis means analyzes that the lighting device has not reached a predetermined state.