JPS6239316Y2 - - Google Patents
Info
- Publication number
- JPS6239316Y2 JPS6239316Y2 JP8865980U JP8865980U JPS6239316Y2 JP S6239316 Y2 JPS6239316 Y2 JP S6239316Y2 JP 8865980 U JP8865980 U JP 8865980U JP 8865980 U JP8865980 U JP 8865980U JP S6239316 Y2 JPS6239316 Y2 JP S6239316Y2
- Authority
- JP
- Japan
- Prior art keywords
- light
- angle
- sensing area
- road surface
- receiver
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Testing Or Calibration Of Command Recording Devices (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Description
【考案の詳細な説明】
道路表面のぬれ、凍結、積雪を検知する装置と
して、光式路面水分計がある。この装置は、路面
に可視、赤外等の光を照射し、その反射強度によ
り、水分の有無を検出するものである。[Detailed description of the invention] An optical road moisture meter is a device that detects wet, frozen, and snowy road surfaces. This device irradiates visible, infrared, etc. light onto the road surface and detects the presence or absence of moisture based on the reflected intensity.
この装置を路面に設置する場合、光源からの光
の入射角と、受光部への光の反射角度を正確に調
整することが良好な特性を得る上で重要である。 When installing this device on a road surface, it is important to accurately adjust the angle of incidence of light from the light source and the angle of reflection of light to the light receiving section in order to obtain good characteristics.
本考案の装置は、このような光式路面水分計を
正しく設置し、正しく試験調整する装置に関する
ものである。 The device of the present invention relates to a device for correctly installing such an optical road moisture meter and correctly testing and adjusting it.
以下その一実施例につき説明すると、１は道
路、２は道路１の表面（以下路面と呼ぶ）で、ぬ
れ、凍結等の表面状況の観測対象部である。３は
投光器であつて、路面２を照らす光源で、水銀
燈、赤外発光ダイオード、キセノンランプ等の各
種光源が使用できる。４は受光器であつて、路面
から反射して来る投光器３の反射光を受光するも
ので、光源の光スペクトルに合つた感光素子たと
えばフオトダイオードが使用できる。５は本体
で、受光器４の光を電気的に増幅したり、判定し
たりするものである。６はこれらの機器を取付け
るポールである。７は平面鏡であつて、路面に平
行な反射面を有し、路面上を移動できるものであ
る。８はレベル計であつて、本体５に接続され、
受光器４でとらえた反射光の強さに比例したレベ
ルを指示し、目読可能にするものである。投光器
３か受光器４には、通常レンズや凹面鏡を使つた
光学系が使用される。 One example will be described below. 1 is a road, and 2 is a surface of the road 1 (hereinafter referred to as a road surface), which is an object of observation for surface conditions such as wetness and freezing. A floodlight 3 is a light source that illuminates the road surface 2, and various light sources such as a mercury lamp, an infrared light emitting diode, and a xenon lamp can be used. Reference numeral 4 denotes a light receiver which receives the reflected light from the projector 3 reflected from the road surface, and a photosensitive element such as a photodiode that matches the light spectrum of the light source can be used. Reference numeral 5 denotes a main body that electrically amplifies and judges the light from the light receiver 4. 6 is a pole on which these devices are attached. 7 is a plane mirror that has a reflective surface parallel to the road surface and can move on the road surface. 8 is a level meter, which is connected to the main body 5;
It indicates a level proportional to the intensity of the reflected light captured by the light receiver 4, making it visually readable. For the emitter 3 or the receiver 4, an optical system using a lens or a concave mirror is usually used.
第２図は、第１図の水分計の原理を詳しく説明
するものである。光源の投光器３から出た入射光
１１は、路面で反射して反射光１２として受光器
４に入る。投光器３や受光器４は指向性を持つの
が普通であるから、投光器３の投光方向と受光器
４の受光方向は、一定の角度関係を持つとき最も
効率よく路面の反射光を検出できる。一方、路面
のどの部分の水分を検出するかは、感知領域を定
めると言う言葉で表現されるが、感知領域は車輌
の通行状況等により任意に選べることが望まし
い。感知領域を定め、その領域で最も効果よく水
分を検出するには、感知領域において、入射角１
３と反射角１４を同じにすれば良い。入射角１３
と反射角１４を同じにするためには、三角測量技
術を応用することが考えられるが、道路にトラン
シツト等の測量器具を持つて来て機器の試験調整
をするのは大変である。 FIG. 2 explains in detail the principle of the moisture meter of FIG. 1. Incident light 11 emitted from the light projector 3 as a light source is reflected by the road surface and enters the light receiver 4 as reflected light 12. Since the emitter 3 and the receiver 4 are usually directional, reflected light from the road surface can be detected most efficiently when the direction of light emitted by the emitter 3 and the direction of light reception by the receiver 4 have a certain angular relationship. . On the other hand, determining which part of the road surface to detect moisture is expressed in terms of determining a sensing area, but it is desirable that the sensing area can be arbitrarily selected depending on vehicle traffic conditions and the like. To define a sensing area and most effectively detect moisture in that area, the angle of incidence is 1 at the sensing area.
3 and reflection angle 14 should be the same. angle of incidence 13
In order to make the angle of reflection 14 the same as the angle of reflection 14, it is possible to apply triangulation technology, but it is difficult to bring surveying equipment such as a transit to the road and test and adjust the equipment.
本考案では、鏡７を路面上で移動させ、受光器
４の受光強度をレベル計８で計測し、その指示が
最大になる領域でもつて、実感知領域と判定する
こととした。即ち、希望感知領域に鏡を置き、レ
ベル計で計りながら投光器３と受光器４の位置や
取付角度を変え、受光強度を最大にしたり鏡７を
移動させたとき、あらかじめ指定された希望感知
領域にて、レベル計８の指示すなわち受光強度が
最大になるように、調整するわけである。このこ
とは、調整後の試験にても、鏡７を動かせばあら
かじめ決められた希望感知領域で、レベル計８の
指示すなわち受光強度が最大になるとき、正しく
調整されたすなわち希望感知領域と実感知領域が
一致したと判定できる。 In the present invention, the mirror 7 is moved on the road surface, the intensity of light received by the light receiver 4 is measured by the level meter 8, and the area where the indication is maximum is determined to be the actual sensing area. That is, when a mirror is placed in the desired sensing area and the positions and mounting angles of the emitter 3 and receiver 4 are changed while measuring with a level meter to maximize the received light intensity or the mirror 7 is moved, the desired sensing area specified in advance is achieved. At this point, adjustment is made so that the level indicator 8 indicates the maximum intensity of the received light. This also shows that in tests after adjustment, when the mirror 7 is moved to reach the predetermined desired sensing area, and when the level meter 8 indicates the maximum intensity, the user feels that the adjustment has been made correctly, that is, the desired sensing area. It can be determined that the knowledge areas match.
通常の平面鏡は、厚味が薄く、路面に置いたと
きは、路面と平行になる。このため、平面鏡を置
くことは路面の一部を鏡面にしたのと同じ効果が
ある。したがつて、希望感知領域に鏡を置いて、
受光器４の出力が最大になるときは、この領域に
おいて、路面への入射角と反射角が同じになつた
のと同じである。 A normal plane mirror is thin and when placed on the road surface, it becomes parallel to the road surface. Therefore, placing a plane mirror has the same effect as making a part of the road surface a mirror surface. Therefore, by placing a mirror in the desired sensing area,
When the output of the light receiver 4 becomes maximum, it is the same as when the angle of incidence on the road surface and the angle of reflection become the same in this region.
感知領域の大きさは、投光器３と受光器４の光
学特性で決まるが、鏡の大きさは、感知領域の大
きさより小さい場合が使いよい。感知領域より大
きい鏡を用いた場合は、鏡を移動させたときの受
光強度の距離に対する変化曲線から感知領域を求
めるとよい。 The size of the sensing area is determined by the optical characteristics of the light emitter 3 and the light receiver 4, but it is best to use a case where the size of the mirror is smaller than the size of the sensing area. If a mirror larger than the sensing area is used, the sensing area may be determined from a curve of change in received light intensity versus distance when the mirror is moved.
本考案は上記実施例より明らかなように、道路
に設けられたポールに、取付位置、取付角度の変
更可能な投光器、受光器とを取り付け、感知領域
上に平面鏡を置いて、投光器、受光器を調整して
以後平面鏡を除去し、受光量によつて道路面の水
分の有無を検出するよう構成したので、路面上の
水分の有無について良好なデータが得られるとい
う効果を有する。 As is clear from the above embodiments, the present invention is such that a light emitter and a light receiver, which can change the mounting position and angle, are attached to a pole installed on the road, and a flat mirror is placed on the sensing area. The present invention is configured so that the presence or absence of moisture on the road surface can be detected based on the amount of received light by adjusting the plane mirror and then removing the plane mirror, which has the effect of obtaining good data regarding the presence or absence of moisture on the road surface.
第１図は、本考案の実施例における光式路面水
分計試験調整装置の概略構成図、第２図は、本考
案の動作説明図である。
１……道路、２……路面、３……投光器、４…
…受光器、５……本体、６……ポール、７……
鏡。
FIG. 1 is a schematic configuration diagram of an optical road moisture meter test and adjustment device according to an embodiment of the present invention, and FIG. 2 is an explanatory diagram of the operation of the present invention. 1... Road, 2... Road surface, 3... Floodlight, 4...
...Receiver, 5...Main body, 6...Pole, 7...
mirror.
Claims (1)
ールと、このポール上部に取り付けられ、取付位
置、取付角度の変更可能な投光器と、上記ポール
上部に取り付けられ、取付位置、取付角度が変更
可能で上記投光器の反射光を受光する受光器と、
この受光器の出力信号に応じて指示するレベル計
と、上記感知領域上に取りはずし可能に設けら
れ、上記レベル計のレベル値が最大になるよう上
記投光器および受光器の取付位置、取付角度を変
更させる平面鏡とを備えた光式路面水分計用試験
調整装置。 A pole installed in an inverted L shape in the desired sensing area of the road, a floodlight that is attached to the top of this pole and whose mounting position and angle can be changed, and a floodlight that is attached to the top of the pole and whose mounting position and angle can be changed. a light receiver capable of receiving the reflected light of the light emitter;
A level meter that gives instructions according to the output signal of the light receiver is removably installed on the sensing area, and the mounting position and angle of the emitter and receiver are changed so that the level value of the level meter is maximized. A test adjustment device for an optical road surface moisture meter equipped with a plane mirror that allows
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8865980U JPS6239316Y2 (en) | 1980-06-24 | 1980-06-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8865980U JPS6239316Y2 (en) | 1980-06-24 | 1980-06-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5716848U JPS5716848U (en) | 1982-01-28 |
| JPS6239316Y2 true JPS6239316Y2 (en) | 1987-10-07 |
Family
ID=29450733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8865980U Expired JPS6239316Y2 (en) | 1980-06-24 | 1980-06-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6239316Y2 (en) |
-
1980
- 1980-06-24 JP JP8865980U patent/JPS6239316Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5716848U (en) | 1982-01-28 |
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