JPH01250739A - Measuring apparatus of reflectance and transmittance of granular aggregate - Google Patents
Measuring apparatus of reflectance and transmittance of granular aggregateInfo
- Publication number
- JPH01250739A JPH01250739A JP7596488A JP7596488A JPH01250739A JP H01250739 A JPH01250739 A JP H01250739A JP 7596488 A JP7596488 A JP 7596488A JP 7596488 A JP7596488 A JP 7596488A JP H01250739 A JPH01250739 A JP H01250739A
- Authority
- JP
- Japan
- Prior art keywords
- measured
- light
- reflectance
- transmittance
- light source
- 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.)
- Pending
Links
- 238000002834 transmittance Methods 0.000 title claims abstract description 24
- 239000013307 optical fiber Substances 0.000 claims abstract description 27
- 230000003287 optical effect Effects 0.000 claims abstract description 9
- 239000013618 particulate matter Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract 5
- 239000000835 fiber Substances 0.000 abstract 2
- 239000000758 substrate Substances 0.000 abstract 1
- 241000209094 Oryza Species 0.000 description 15
- 235000007164 Oryza sativa Nutrition 0.000 description 15
- 235000009566 rice Nutrition 0.000 description 15
- 238000005259 measurement Methods 0.000 description 13
- 238000001514 detection method Methods 0.000 description 10
- 235000013339 cereals Nutrition 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 238000005498 polishing Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000012798 spherical particle Substances 0.000 description 2
- 241000951471 Citrus junos Species 0.000 description 1
- 244000175448 Citrus madurensis Species 0.000 description 1
- 235000017317 Fortunella Nutrition 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/4738—Diffuse reflection, e.g. also for testing fluids, fibrous materials
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、米穀等の粒状物体の光に対する反射率及び透
過率をｌｊ定するための装置と＜Ｋ。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an apparatus for determining the reflectance and transmittance of a granular object such as rice grains to light.
その精米度を測定する装置に関する。This invention relates to a device for measuring the degree of rice polishing.
第３図はこの柚の従来開発されてきた粒状物の反射率及
び透過率測定装置の概略構成図である。同図に２いて、
光源１と粒状試料を充填した被測定物体２とが互いに離
隔配置され、光源１に対して粒状試料七光鷹し走破測定
物体２は七の表面が垂直になる工うに置かれているが、
光源１から放射される光は光源全体が均一な光源のもの
は・なく、光源１と被測定物体２との位置関係が少しず
れると入射光量に大きな変動をきたすため、このような
不都合が生じないよう光源１からの放射光が被測定物体
２に直接届かないような手法が講じられている。そして
、この方法は光源１と被測定物体２との略中間で、しか
も、左右対称の位置にミラー３ａ、３ｂが配設され、光
源１から放射される光を反射せしめて、同一の入射角で
互いに反対の方向から被測定物体２１に照射する構成が
とられている。また、光源１と被測定物体２との間に、
レンズ４及び受光素子５が設けられ、被測定物体２の光
照射面に対して垂直方向に反射する光をレンズ４で集光
し、受光素子５がこれ全電気信号に変換する。一方、光
源１から見て被測定物体２の表側に、レンズ６および受
光素子７が設けらへ被測定物体２を透過する光のうち、
光間射面に対して垂直方向に進む光をレンズ６で集光し
、受光素子７がこれを電気信号に変換する。また、受光
素子５及び７の″電気信号が光量検出回路８に取込まれ
、ここで、反射率および透過率に対応する信号に変換さ
れ、表示回路９に反射率及び透過率が表示される。FIG. 3 is a schematic diagram of a conventionally developed apparatus for measuring the reflectance and transmittance of granules of yuzu. 2 in the same figure,
The light source 1 and the object to be measured 2 filled with a granular sample are arranged at a distance from each other, and the object 2 to be measured is placed in such a way that the surface of the granular sample is perpendicular to the light source 1.
This inconvenience occurs because the light emitted from the light source 1 is not uniform throughout the entire light source, and a slight shift in the positional relationship between the light source 1 and the object to be measured 2 will cause a large fluctuation in the amount of incident light. To prevent this, a method is taken to prevent the emitted light from the light source 1 from directly reaching the object to be measured 2. In this method, mirrors 3a and 3b are disposed approximately midway between the light source 1 and the object to be measured 2, and in symmetrical positions, and reflect the light emitted from the light source 1 to achieve the same incident angle. The object to be measured 21 is irradiated with light from opposite directions. Moreover, between the light source 1 and the measured object 2,
A lens 4 and a light receiving element 5 are provided, and the lens 4 collects light reflected in a direction perpendicular to the light irradiation surface of the object to be measured 2, and the light receiving element 5 converts the light into an electrical signal. On the other hand, a lens 6 and a light receiving element 7 are provided on the front side of the object to be measured 2 when viewed from the light source 1, so that out of the light that passes through the object to be measured 2,
Light traveling in a direction perpendicular to the light incident plane is focused by a lens 6, and a light receiving element 7 converts this into an electrical signal. In addition, the electrical signals from the light receiving elements 5 and 7 are taken into the light amount detection circuit 8, where they are converted into signals corresponding to the reflectance and transmittance, and the reflectance and transmittance are displayed on the display circuit 9. .
上述し九従来の粒状物の反射率及び透過率測定装置は、
単一の光源より放射される光を、それぞれミラーを用い
て被測定物体に導く構成になっていたがために、光路長
が長くなって装置が大型化すると同時に、光路幅の絞り
込みが難しくミラー、レンズ及び受光素子に対してそれ
ぞれ微妙な位置合わせが必要となるという問題点がめっ
た。The nine conventional particulate matter reflectance and transmittance measuring devices mentioned above are:
Since the light emitted from a single light source was configured to be guided to the measured object using mirrors, the optical path length became long, making the device larger, and it was difficult to narrow down the optical path width using mirrors. However, a problem frequently arises in that delicate positioning is required for each of the lens and the light-receiving element.
また、米穀粒の糊白度等を未装置によって測定すること
は人の目視判定による精度のばらつきや、精白度の自動
測定などが難しく、精米機は可成りの振動を発生する装
置であるため、従来の装置では測定用光路に乱れが生じ
易く）米粒の精白度の正確な測定が難しいという難点も
めった。In addition, measuring the whiteness of rice grains using unequipped equipment may result in variations in accuracy due to human visual judgment, and it is difficult to automatically measure the degree of polishing, as rice milling machines are devices that generate considerable vibration. However, with conventional devices, it is difficult to accurately measure the polishing degree of rice grains (because disturbances tend to occur in the measurement optical path).
また、従来用いられてい走光の反射率及び被測定物体に
て粒子状物体を測定するには、この物体である試料容器
中に粒状物を光量して測定していたか扱う粒状物の粒子
形状は球体なるものは極めて少なく米穀粒の如き球体物
でない粒体の光の反射率、透過率を測定するに当っては
試料容器中への粒状体の充＊’ａ度の差がその測定結果
に大きく影響するという難点がめった。In addition, in order to measure particulate matter using the conventionally used phototrace reflectance and measuring object, it is necessary to measure the particle shape of the particulate matter by placing the light amount in a sample container, which is the object. There are very few spherical particles, and when measuring the light reflectance and transmittance of non-spherical particles such as rice grains, the difference in the degree of filling of the sample container with the particles affects the measurement results. The problem was that it had a big impact.
本発明の目的は、装置の小戯化ｔ−実埃し得ると同時に
微妙な光軸等の位置合わせを不要化し得ると共に常に正
しい粒状物集合体の反射率及び透過率測定装置を提供す
ることである。SUMMARY OF THE INVENTION An object of the present invention is to provide an apparatus for measuring the reflectance and transmittance of a particulate matter aggregate, which can reduce the complexity of the apparatus, eliminate the need for delicate alignment of the optical axis, etc., and always be accurate. It is.
本発明の目的は単一光源より放射される光を、粒状物集
合体試料を充填し走破測定物体容器の表面に同一の入射
角で互いに反対方向より照射し、前記被測定物体容器の
表面から垂直方向に反射する反射光量に対応する信号に
基いて粒状物体の反射率を測定し、被測定物体容器の裏
面の垂直方向に透過する透過光量に対応する信号に基い
て粒状物体の光透過軍を測定する装置であり、前記光源
より放射される光を、２条の光ファイバにて前記被測定
物体容器の表面に導くと共に、これら光ファイバより放
射される光の光軸が前記被測定物体容器の表面上で交わ
るように配置してあるとともに、粒状試料集合体を充填
する被測定物体容器に撮動機構を設けたこと全特徴とす
る粒状物集合体の反射率及び透過率測定装置にある。An object of the present invention is to irradiate light emitted from a single light source onto the surface of a traveling measuring object container filled with a particulate aggregate sample from opposite directions at the same angle of incidence, so that the light emitted from the surface of the measuring object container is The reflectance of the granular object is measured based on the signal corresponding to the amount of reflected light reflected in the vertical direction, and the light transmittance of the granular object is measured based on the signal corresponding to the amount of transmitted light transmitted in the vertical direction on the back surface of the object to be measured container. In this device, the light emitted from the light source is guided to the surface of the object to be measured container through two optical fibers, and the optical axis of the light emitted from these optical fibers is aligned with the object to be measured. A device for measuring reflectance and transmittance of a particulate material aggregate, characterized in that the objects to be measured are arranged so as to intersect on the surface of the container, and a photographing mechanism is provided on the measuring object container filled with the particulate sample aggregate. be.
さらにマ次、光源の光量変動に伴う測定値の変動を補正
するために、光源の光量を検出する光ファイバと受光素
子と光量検出回路と、この光量検出回路の出力に基づい
て測定値を補正する測定値補正回路とを備え次ものであ
る。Furthermore, in order to compensate for fluctuations in the measured value due to fluctuations in the light intensity of the light source, the measured value is corrected based on the optical fiber, light receiving element, and light intensity detection circuit that detect the light intensity of the light source, and the output of this light intensity detection circuit. The system is equipped with a measured value correction circuit.
上記のように２本の光ファイバ東金用いて光源の光を導
くようにすれば、被測定物体容器と光源との相対位置、
光ファイバ束の長さに関係なく、単に光が放射される側
の光フアイバ束端部の方向と位置を合わせるだけで済む
ことから、ミラーを用いて被測定容器表面を照射する従
来装置と比較して装置の小型化を図り得ると共に、微妙
な位置合わせが不要になる。If the light from the light source is guided using two optical fibers as described above, the relative position of the object to be measured and the light source,
Regardless of the length of the optical fiber bundle, it is sufficient to simply align the direction and position of the end of the optical fiber bundle on the side from which the light is emitted, compared to conventional equipment that uses a mirror to illuminate the surface of the container to be measured. This allows the device to be made smaller and eliminates the need for delicate positioning.
また、被測定物体容器表面に光を導くだけでなく、それ
ぞれ反射光及び透過光をも光ファイバ束により受光素子
に導くようにしたことで、レンズを用いる従来装置と比
べてよりー層の小型化が図られると同時に、微妙な位置
合わせが不要比される。In addition, in addition to guiding the light to the surface of the container of the object to be measured, reflected light and transmitted light are also guided to the light-receiving element using optical fiber bundles, making it much more compact than conventional devices that use lenses. At the same time, delicate alignment becomes unnecessary.
さらに、光源の光量検出回路と、測定値補正回路とを備
えたことにより、電源変動や特性変動により光源の光量
が変化したとしても、反射率及び透過’ＪＫ？常に正確
に測定することができ、これによって装置信頼性を高め
ることができる。Furthermore, by being equipped with a light intensity detection circuit of the light source and a measured value correction circuit, even if the light intensity of the light source changes due to power supply fluctuations or characteristic fluctuations, the reflectance and transmission 'JK? Measurements can always be made accurately, thereby increasing device reliability.
本発明の粒状物集合体の光透過率及び反射率測定装置は
、とくに米穀粒の精米度を測定するのに極めて有用な装
置であるが、精米過程の米穀粒を被測定物体容器に充填
する場合、従来は人手で行なうと該粒状物の容器内への
充填率にバラツキが生じるため測定値にバラツキが生じ
正確な精米度を測定することができなかったのであるが
、本発明においては被測定容器に振動機構を備えさせ之
ため、同種の試料であれば常に一定の充ｊｊＩｉｌ：を
被測定容器に充填できるたべ米穀粒の精米度を自動的に
正確に測定できるようになし得ている。The device for measuring the light transmittance and reflectance of a granular material aggregate according to the present invention is an extremely useful device, especially for measuring the degree of polishing of rice grains. In the past, when this was done manually, there were variations in the filling rate of the granules into the container, which caused variations in the measured values, making it impossible to accurately measure the degree of rice polishing. By equipping the measuring container with a vibration mechanism, it is possible to automatically and accurately measure the degree of polishing of edible rice grains, which can always fill the measuring container with a constant amount if the sample is of the same type. .
第１図は本発明の一実施例の概略構成図でちゃ１図中第
３図と同一の符号を付したものはそれぞれ同一の要素を
示している。そして第３図中のミラー３ａ、３ｂ、レン
ズ４，５を除去し、その代わりに２本の光フアイバ束１
Ｑ辱、ＩＱｂを用いて光源１より放射される光を被測定
物体表面に導くと共に、光ファイバ束ＩＱａ、１０ｋｌ
の被測定物体２＠の光軸が被測定物体２０表面上で、所
定の入射角をもって反対方向より交るように配置し、さ
らに、被測定物体２の表面からの反射光を、光ファイバ
束１１を用いて受光素子５に導き、被測定物体２からの
透過光音、光ファイバ束１２を用いて受光素子７に導く
ように構成したものである。FIG. 1 is a schematic configuration diagram of an embodiment of the present invention. In FIG. 1, the same reference numerals as in FIG. 3 indicate the same elements. Mirrors 3a, 3b and lenses 4, 5 in FIG. 3 are removed, and two optical fiber bundles 1 are replaced instead.
The light emitted from the light source 1 is guided to the surface of the object to be measured using the optical fiber bundle IQa, 10 kl.
The optical axis of the object to be measured 2@ is arranged so that it crosses the surface of the object to be measured 20 from opposite directions at a predetermined angle of incidence, and the reflected light from the surface of the object to be measured 2 is connected to an optical fiber bundle. 11 is used to guide the light to the light receiving element 5, and the transmitted light sound from the object to be measured 2 is guided to the light receiving element 7 using the optical fiber bundle 12.
なお本実施例において用いた光ファイバ束１０ａ、１０
ｂ、１１及び１２は、１０φ直径の光ファイバと０．５
φ直径の光ファイバを集束した光ファイバ束として使用
し友。Note that the optical fiber bundles 10a, 10 used in this example
b, 11 and 12 are optical fibers with a diameter of 10φ and 0.5
Optical fibers with a diameter of φ can be used as a focused optical fiber bundle.
この場合、光ファイバ束１０ａ、１０ｋｌの被測定容器
２ ＠（Ｄ１部の入が所定の方向を向いておれば、光源
１の位置が変わっても測定には支障がなく、ま之、光フ
ァイバ束１１，１２０被測定容器２側の端部がこの被測
定容器表面に垂直になっておれば、その他端はどこであ
ってもよく、従って、受光素子５，７の位置？任意に選
択することができる。In this case, if the optical fiber bundle 10a and the 10kl container to be measured 2 @(the D1 section is facing in the predetermined direction, there will be no problem in measurement even if the position of the light source 1 changes; As long as the end of the bundle 11, 120 on the side of the container to be measured 2 is perpendicular to the surface of the container to be measured, the other end may be anywhere. Therefore, the positions of the light receiving elements 5, 7 can be arbitrarily selected. Can be done.
ここで、反射率、透過率を測定する具体的手法としては
、先ず、被測定容器２の代わりに反射率が９０％程度の
標準白板を装着して反射光量ｆｅ測測定る。次いで、こ
の標準白板を取り去った状態で透過光′ｆＩｋヲ測定す
る。次に、被測定物体２を装着して反射光量及び透過光
ｆｉｔを測定した後、演算により反射率及び透過率を測
定する。Here, as a specific method for measuring reflectance and transmittance, first, a standard white board with a reflectance of about 90% is attached in place of the container 2 to be measured, and the amount of reflected light fe is measured. Next, with this standard white plate removed, the transmitted light 'fIk' is measured. Next, after attaching the object 2 to be measured and measuring the amount of reflected light and transmitted light fit, the reflectance and transmittance are measured by calculation.
第２図は本発明の他の実施例の概略構成図であり、図中
、第１図と同一の符号を付したものはそれぞれ同一の要
素金示している。そして、新たに光源１の放射光を、光
ファイバ１３を用いて受光素子１４に導き、さらに、受
光素子１４の出力に基いて光量検出回路１５が光源１の
光ｔを測定するようにし九点、この光量検出回路１５の
出力と、前記反射光量及び透過光量全測定する光量検出
回路８の出力とを測定値補正回路１６に入力すると、こ
の測定値補正回路１６が光源１の光量変動に伴う反射率
、透過率の各測定値の変動分を補正して表示回路９に与
えるようにした点が第１因と異っている。FIG. 2 is a schematic diagram of another embodiment of the present invention, and in the figure, the same reference numerals as in FIG. 1 indicate the same elements. Then, the emitted light from the light source 1 is newly guided to the light receiving element 14 using the optical fiber 13, and the light amount detection circuit 15 measures the light t from the light source 1 based on the output of the light receiving element 14. When the output of this light amount detection circuit 15 and the output of the light amount detection circuit 8 that measures the total amount of reflected light and transmitted light are input to the measured value correction circuit 16, this measured value correction circuit 16 adjusts the amount of light caused by the fluctuation of the light amount of the light source 1. This differs from the first cause in that the fluctuations in the measured values of reflectance and transmittance are corrected and applied to the display circuit 9.
かかる構成によれば、電源電圧の変動、時間の経過に伴
う特性変動等があっても、反射率及び透過率を高精度に
て測定することができる。According to this configuration, reflectance and transmittance can be measured with high precision even if there are fluctuations in power supply voltage, characteristic fluctuations over time, etc.
なお、上記実施例を構成する受光素子５，７゜１４とし
てはフォトトランジスタあるいはフォトダイオードを用
いればよく、また、光量検出回路８，１５としては受光
素子の出力を増幅する直流増幅器、その出力をディジタ
ル信号に変換するム・Ｄ変換器、変換されたディジタル
データに基づいて反射率及び透過率を演算するマイクロ
プロセッサで構成すればよい。また、測定値補正回路１
６としては利得制御可能な増幅器を用いても、あるいは
マイクロプロセッサを用いてもよい。マイクロプロセッ
サを用いる場合には光量検出回路８，１５０機能と測定
値補正回路１６の機能を１つのマイクロプロセッサに持
たせてもよい。Note that phototransistors or photodiodes may be used as the light-receiving elements 5, 7, 14 constituting the above embodiment, and the light amount detection circuits 8, 15 may include DC amplifiers that amplify the output of the light-receiving elements, and the output thereof. It may be configured with a Mu/D converter that converts into a digital signal, and a microprocessor that calculates reflectance and transmittance based on the converted digital data. In addition, the measured value correction circuit 1
6 may be a gain controllable amplifier or a microprocessor. When a microprocessor is used, the functions of the light amount detection circuits 8 and 150 and the measured value correction circuit 16 may be provided in one microprocessor.
また本実施例の実捲に当っては第４因（イ）〜（ハ）に
図示する如き振動機構を備え念被測定物体容器を用いた
。Further, in actually winding up this embodiment, a container for the object to be measured was used, which was equipped with a vibration mechanism as shown in the fourth factors (a) to (c).
底部にガラス（２ｂ）が固定され次受皿（２ａ）に米（
２フヲ充てんし、フタ（２ｅ）にガラス（２ｂ）ｄＥ固
定され底部に開孔部（２ｆ）を持つ被測定物体容器（２
Ｃ）内に米を入れた受皿（２ａ）ｔ−納めフタ（２ｅ）
＋する。A glass (2b) is fixed to the bottom, and then rice (2a) is placed on the saucer (2a).
A measuring object container (2) is filled with 2 bottles, a glass (2b) dE is fixed to the lid (2e), and has an opening (2f) at the bottom.
C) Saucer with rice inside (2a) T-lid (2e)
+
そしてこの被測定物体容器を＄１図、第２図で示す測定
装置に設置して、米粒集合体の光の反射及び透過率の測
定を行うわけであるが、その場合米を受皿に入れる場合
測°定者の感覚にまかすと充てん債が一定せず、複数回
の測定を行うと測定値特に透過度値に差が生じるのであ
るが被測定用物体容器（２Ｃンの側部をソレノイド０７
）金柑いて打撃し振動を与える。ソレノイドＯＢ゛？時
（１７ａ）、ＯＮ時θ７ ｂ）となり被測定用物体容器
（２りの側部を打撃する。打撃サイクルは５回／ ｓｅ
ｃ 、時間は１．５式としたが特に限定されるものでは
ない。これにより被測定物体容器の表面を構成するガラ
ス（２ｄ）面積より小さく設定され次有効測定範囲（２
ｇ）内での米粒充てん密度は米粒充てん量によらずほぼ
一定となシ測定精度には何ら影響せず測定の安定性が向
上した。また打撃機構はソレノイドθ７）に限定するも
のではなく粉体測定には超音波等使うとよい。This object to be measured container is then installed in the measuring device shown in Figures 1 and 2 to measure the light reflection and transmittance of the rice grain aggregate.In this case, when rice is placed in a saucer, If it is left to the senses of the measurer, the charging rate will not be constant, and if measurements are taken multiple times, there will be differences in the measured values, especially the transmittance value.
) Kumquats are struck and vibrated. Solenoid OB゛? (17a), θ7 b) when ON, and the sides of the object container to be measured (2) are struck.The striking cycle is 5 times/se.
c. The time was set to 1.5, but is not particularly limited. As a result, the area of the glass (2d) constituting the surface of the object to be measured container is set smaller than the next effective measurement range (2d).
The packed density of rice grains in g) was almost constant regardless of the amount of packed rice grains, which did not affect the measurement accuracy and improved the stability of the measurement. Further, the impact mechanism is not limited to the solenoid θ7), and it is preferable to use ultrasonic waves or the like for powder measurement.
本発明の反射率及び透過率測定装置は、以上説明したよ
うに構成されているので、以下に記載するような効果を
奏する。Since the reflectance and transmittance measuring device of the present invention is configured as described above, it produces the effects described below.
２本の光ファイバ束を用いて光源の光を導くことにより
、光が放射される側の光フアイバ端部の方向と位ｔｌｔ
ｋ合わせるだけでよく、これによって装置の小型化を図
９得ると共に、微妙な位置合わせが不要化される。By guiding the light from the light source using two optical fiber bundles, the direction and position of the optical fiber end on the side from which the light is emitted can be determined.
It is only necessary to align the positions k, thereby making the device more compact as shown in FIG. 9, and eliminating the need for delicate positioning.
そして、反射光及び透過光をも、光ファイバを用いて受
光素子に導くようにしたことにより、−層の小型化が図
られると同時に、位置合わせが容易化される。By guiding the reflected light and the transmitted light to the light receiving element using optical fibers, the size of the -layer can be reduced, and at the same time alignment can be facilitated.
また、光源の光量変動に伴う測定値変動分の１正回路を
備えることによジ測定精度と信頼性向上させることがで
きる。Further, by providing a positive circuit corresponding to the variation in measured value due to variation in the light amount of the light source, the measurement accuracy and reliability can be improved.
更に、本発明においては被測定物体容器に振機構が設け
られているため、該容器に充填さる粒体の充填密度は常
に一定なものとするこができ、測定者による測定値の変
動はほとんなく正確な測定を行なうことができた。Furthermore, in the present invention, since the container for the object to be measured is provided with a shaking mechanism, the packing density of the particles filled in the container can always be kept constant, and there are almost no fluctuations in the measured values by the measurer. We were able to perform accurate measurements without any problems.
第１図は本発明の光の反射率及び透過不測定置の一実施
例の概略構成図、第２図は他の実例の概要構成図、第３
図は従来の光の反射率び透過率測定装置の概略構成図で
あり、第４（イ）〜ｐ→は本発明の装置に装着した被測
定物体器の一例及びその振動機構の概略の一例を示図で
ある。
１・・・光源、２・・・被測定物体容器、２ａ・・・受
皿１．７．１４・・・受光素子、８，１５・・・光量検
出路、９・・・表示回路、１０ａ、１０ｂ、１１゜２．
１３・・・光ファイバ、１７“°°ソレノイド１１８・
・・測定値補正回路
特許出願人 三菱レイヨン株式会社Figure 1 is a schematic configuration diagram of one embodiment of the light reflectance and transmission measurement device of the present invention, Figure 2 is a schematic configuration diagram of another example, and Figure 3
The figure is a schematic configuration diagram of a conventional light reflectance and transmittance measuring device, and 4th (a) to 4th (a) to p are an example of an object to be measured attached to the device of the present invention and a schematic example of its vibration mechanism. is shown. DESCRIPTION OF SYMBOLS 1... Light source, 2... Measured object container, 2a... Receiver 1.7.14... Light receiving element, 8, 15... Light amount detection path, 9... Display circuit, 10a, 10b, 11°2.
13...Optical fiber, 17"°° solenoid 118.
...Measurement value correction circuit patent applicant Mitsubishi Rayon Co., Ltd.
Claims (1)
した被測定物体容器の表面に同一の入射角で互いに反対
方向より照射し、前記被測定物体表面から垂直に反射す
る反射光量に対応する信号に基づいて反射率を測定し、
裏面へ垂直に透過する透過光量に対応する信号に基づい
て透過率を測定する反射率及び透過率測定装置において
、前記光源より放射される光を、２本の光ファイバを用
いて前記被測定容器の表面に導くと共に、これらの光フ
ァイバの光軸が前記被測定物体の表面上で交わるように
配置してあると共に前記粒状試料を充填する被測定物体
容器に振動機構を設けたことを特徴とする粒状物集合体
の反射率及び透過率測定装置。Light emitted from a single light source is irradiated from opposite directions at the same angle of incidence onto the surface of a container to be measured filled with a particulate aggregate sample, and the amount of reflected light reflected perpendicularly from the surface of the object to be measured is determined by Measure the reflectance based on the corresponding signal,
In a reflectance and transmittance measuring device that measures transmittance based on a signal corresponding to the amount of transmitted light transmitted perpendicularly to the back surface, the light emitted from the light source is transmitted to the container to be measured using two optical fibers. The granular sample is guided to the surface of the object to be measured, and the optical fibers are arranged so that their optical axes intersect on the surface of the object to be measured, and a vibration mechanism is provided in the object to be measured container filled with the granular sample. Reflectance and transmittance measuring device for particulate matter aggregates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7596488A JPH01250739A (en) | 1988-03-31 | 1988-03-31 | Measuring apparatus of reflectance and transmittance of granular aggregate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7596488A JPH01250739A (en) | 1988-03-31 | 1988-03-31 | Measuring apparatus of reflectance and transmittance of granular aggregate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01250739A true JPH01250739A (en) | 1989-10-05 |
Family
ID=13591410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7596488A Pending JPH01250739A (en) | 1988-03-31 | 1988-03-31 | Measuring apparatus of reflectance and transmittance of granular aggregate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01250739A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019002479A1 (en) * | 2017-06-29 | 2019-01-03 | Siemens Aktiengesellschaft | Device and method for detecting particles |
| CN113533256A (en) * | 2021-06-30 | 2021-10-22 | 奥比中光科技集团股份有限公司 | Method, device and equipment for determining spectral reflectivity |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53106080A (en) * | 1977-02-26 | 1978-09-14 | Ritsuo Hasumi | Reflection and transmission factor measuring instrument |
| JPS56106144A (en) * | 1980-01-18 | 1981-08-24 | Univ Groningen | Optical reflectometer |
| JPH01142441A (en) * | 1987-11-28 | 1989-06-05 | Satake Eng Co Ltd | Apparatus for measuring polishing degree of grain of rice |
-
1988
- 1988-03-31 JP JP7596488A patent/JPH01250739A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53106080A (en) * | 1977-02-26 | 1978-09-14 | Ritsuo Hasumi | Reflection and transmission factor measuring instrument |
| JPS56106144A (en) * | 1980-01-18 | 1981-08-24 | Univ Groningen | Optical reflectometer |
| JPH01142441A (en) * | 1987-11-28 | 1989-06-05 | Satake Eng Co Ltd | Apparatus for measuring polishing degree of grain of rice |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019002479A1 (en) * | 2017-06-29 | 2019-01-03 | Siemens Aktiengesellschaft | Device and method for detecting particles |
| CN113533256A (en) * | 2021-06-30 | 2021-10-22 | 奥比中光科技集团股份有限公司 | Method, device and equipment for determining spectral reflectivity |
| CN113533256B (en) * | 2021-06-30 | 2024-03-12 | 奥比中光科技集团股份有限公司 | Method, device and equipment for determining spectral reflectivity |
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