JPH07333144A - Near infrared spectral analysis device - Google Patents
Near infrared spectral analysis deviceInfo
- Publication number
- JPH07333144A JPH07333144A JP12494694A JP12494694A JPH07333144A JP H07333144 A JPH07333144 A JP H07333144A JP 12494694 A JP12494694 A JP 12494694A JP 12494694 A JP12494694 A JP 12494694A JP H07333144 A JPH07333144 A JP H07333144A
- Authority
- JP
- Japan
- Prior art keywords
- sample
- temperature
- light
- dew condensation
- measurement
- 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.)
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、近赤外分光分析装置
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a near infrared spectroscopy analyzer.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】従来、
近赤外分光分析においては、なるべく測定試料の温度
（品温）と外気温度とを一定にして行われている。この
ため冷蔵試料の計測は不可とされていた。従って、農産
物の冷蔵現場において、例えば冷蔵材料である青果物，
魚肉類，乳製品，ジュース等の分析が困難とされてい
た。2. Description of the Related Art Conventionally, the problems to be solved by the invention
In the near-infrared spectroscopic analysis, the temperature (article temperature) of the measurement sample and the outside air temperature are kept as constant as possible. Therefore, measurement of refrigerated samples was not possible. Therefore, in the field of refrigeration of agricultural products, for example, fruits and vegetables, which are refrigeration materials,
It has been difficult to analyze fish meat, dairy products, juices, etc.
【０００３】[0003]
【課題を解決するための手段】この発明は、上記の欠点
を解消しようとするもので、測定試料に近赤外光を照射
しその反射光量または透過光量を計測し、測定試料の化
学成分値や物理的特性値あるいは総合的品質特性値を分
析するものにおいて、その測定部の雰囲気の温度・湿度
検出手段と測定試料の品温検出手段により、測定試料も
しくは測定試料部の結露状態を判定する結露状態判定手
段を設けてなる近赤外分光分析装置の構成とする。SUMMARY OF THE INVENTION The present invention is intended to solve the above-mentioned drawbacks by irradiating a measurement sample with near-infrared light and measuring the amount of reflected light or transmitted light thereof, and measuring the chemical component value of the measurement sample. Or physical property values or total quality property values are analyzed, the dew condensation state of the measurement sample or measurement sample part is determined by the temperature / humidity detection means of the atmosphere of the measurement part and the product temperature detection means of the measurement sample. A near-infrared spectroscopic analysis device is provided with a dew condensation state determination means.
【０００４】[0004]
【発明の作用効果】近赤外分析を行なうにあたって予め
作成した検量線をあてはめて分析するが、測定部の雰囲
気の温度・湿度検出と品温検出とにより当該測定部にお
いて対象物が結露を生じるか否かが判定され、結露を生
じない条件が揃うと分析を実行する等結露の有無に従っ
て適切な処理を行なうことができる。従って冷蔵材料の
分析にあたっても当初から不可の決定をするのでなく、
所定精度を確保できる場合にはこれを実行せしめ、必要
なデータを収集することができる。[Effects of the Invention] When performing a near-infrared analysis, a calibration curve prepared in advance is applied and analyzed. However, the detection of the temperature / humidity of the atmosphere in the measurement section and the detection of the product temperature cause dew condensation on the object in the measurement section Whether or not it is determined, and if the conditions for preventing dew condensation are satisfied, an appropriate process can be performed according to the presence or absence of dew condensation such as performing an analysis. Therefore, when analyzing refrigerated materials, instead of making a decision from the beginning,
When the predetermined accuracy can be ensured, this can be executed and necessary data can be collected.
【０００５】[0005]
【実施例】この発明の一実施例を図面に基づき説明す
る。１は試料（図例では穀物）を照射する光源、２は集
光用のレンズ、３はスリットであり、これらはレンズ２
の光軸上にくるように配置する。４は光の通過と遮断と
を行うためのチョッパ、５は複数のフィルタを取り付け
たフィルタ付き円盤である。６は反射ミラー、７は測定
する穀物試料をセットする試料セットディスク、８は光
を検出する光電検出器である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 is a light source for irradiating a sample (grain in the illustrated example), 2 is a condenser lens, 3 is a slit, and these are lenses 2
Place it so that it is on the optical axis of. Reference numeral 4 is a chopper for passing and blocking light, and reference numeral 5 is a disk with a filter having a plurality of filters attached thereto. Reference numeral 6 is a reflection mirror, 7 is a sample set disk for setting a grain sample to be measured, and 8 is a photoelectric detector for detecting light.
【０００６】上記チョッパ４は、光の通過と遮断を行う
ために光の通過部と遮断部とを交互に形成した円盤であ
り、モータ４ａにより測定時に一定速度で回転するよう
に構成される。フィルタ付き円盤５は円盤の中心から等
距離の位置に所定間隔で複数の穴をあけ、その各穴にフ
ィルタ５Ａ〜５Ｆを取り付けたものであり、モータ５ａ
により測定時に間欠回転し、その停止時にこれらフィル
タ５Ａ〜５Ｆのいずれか一がレンズ２の光軸上にくるよ
うに構成する。これらフィルタ５Ａ〜５Ｆは測定試料に
おける測定対象成分等、例えば蛋白質、アミロース、水
分等の吸収に特徴と有する所定波長の近赤外線を透過さ
せるものに設定される。The chopper 4 is a disk in which light passing portions and light blocking portions are alternately formed for passing and blocking light, and is configured to rotate at a constant speed by the motor 4a during measurement. The filter-equipped disk 5 has a plurality of holes formed at predetermined intervals at positions equidistant from the center of the disk, and filters 5A to 5F are attached to the respective holes.
Thus, the filter is intermittently rotated at the time of measurement, and any one of these filters 5A to 5F is arranged on the optical axis of the lens 2 when the filter is stopped. These filters 5A to 5F are set so as to transmit near infrared rays having a predetermined wavelength, which is characterized by absorption of components to be measured in the measurement sample, such as proteins, amylose, and water.
【０００７】９は投光用レンズ、１０，１１は夫々集光
用凹面鏡、凸面鏡である。試料セットディスク７は、円
盤の中心から所定距離離れた円周上の所定位置に、セラ
ミックからなる参照用基準板１２、透明セルに穀物粒子
を小さく粉砕して充填した測定試料１３、同様セルに充
填された既知の成分を含有する校正用試料１４、及び感
湿材１５を配設している。尚、感湿材とは外気の湿度変
化に対応して吸湿又は乾燥するもので、塩化リチウム，
五酸化リンなどの電解質系材、酢酸セルロースなどの親
水性高分子膜，ポリアミド樹脂などの有機質系材、酸化
チタン酸バナジウムなどの焼結材，金属リン酸皮膜など
の金属酸化物、セラミック材等があげられる。但し、参
照用基準板１２となるセラミック材にはコーティング処
理により感湿対策を施す必要がある。試料セットディス
ク７はモータ７ａにより測定時に回転するとともに、そ
の停止時には反射ミラー６，投光用レンズ９からの光軸
上にこれら試料が位置するように構成している。なお、
試料は校正用試料１４−基準板１２−測定試料１３−感
湿材１５の順に繰返し測定できる構成としている。Reference numeral 9 is a light projecting lens, and 10 and 11 are light collecting concave mirrors and convex mirrors, respectively. The sample set disk 7 is composed of a reference plate 12 for reference made of ceramic, a measurement sample 13 in which grain particles are crushed and packed into a transparent cell at a predetermined position on the circumference at a predetermined distance from the center of the disk, and the same cell is formed. A calibration sample 14 containing the known known components and a moisture sensitive material 15 are provided. The moisture-sensitive material is a material that absorbs or dries in response to changes in the humidity of the outside air.
Electrolyte materials such as phosphorus pentoxide, hydrophilic polymer films such as cellulose acetate, organic materials such as polyamide resin, sintered materials such as vanadium oxide titanate, metal oxides such as metal phosphate coatings, ceramic materials, etc. Can be given. However, the ceramic material serving as the reference plate 12 for reference needs to be subjected to a moisture-sensitive measure by a coating process. The sample set disk 7 is rotated by the motor 7a at the time of measurement, and when stopped, these samples are arranged on the optical axis from the reflection mirror 6 and the projection lens 9. In addition,
The sample is configured so that the calibration sample 14-reference plate 12-measurement sample 13-humidity material 15 can be repeatedly measured in this order.
【０００８】光電検出器８の後段には、信号の増幅を行
なう増幅器１６、Ａ／Ｄ変換を行なうＡ／Ｄ変換器１
７、及びマイクロコンピュータの制御部１８を接続す
る。この制御部１８は光電検出器８の検出値に基づき、
予め作成し記憶部１９に記憶された検量線Ｌに基づき蛋
白含量を求める等の処理を行なう。制御部１８で求めら
れた測定試料の蛋白含量等は液晶表示器などで構成する
表示器２０に表示される。An amplifier 16 for amplifying a signal and an A / D converter 1 for A / D conversion are provided after the photoelectric detector 8.
7 and the control unit 18 of the microcomputer are connected. This control unit 18 is based on the detection value of the photoelectric detector 8,
Processing such as determining the protein content based on the calibration curve L created in advance and stored in the storage unit 19 is performed. The protein content and the like of the measurement sample obtained by the control unit 18 is displayed on the display 20 composed of a liquid crystal display or the like.
【０００９】上記制御部１８では次の処理も実行され
る。即ち、測定試料１３の品温ＴS及び外気の水蒸気量
ＨAを知り、これらから結露状態判定をしながら、この
判定結果に基づき測定試料が予め作成した上記検量線Ｌ
の適応範囲にあるか否かを判断しようとするものであ
る。このため、制御部１８は次の機能を有する。感湿
材１５の吸光度演算により外気の水蒸気量ＨAを求め
る。測定試料１３としての穀物の吸光度演算により品
温ＴSを求める。で求められた水蒸気量ＨAに見合う
露点温度Ｔlを求め、で求めた品温ＴSと比較する。
の比較結果で品温ＴSが露点温度Ｔl以下のときは結露
と判定する。結露判定結果を表示部に表示出力する。The control unit 18 also executes the following processing. That is, the product temperature T S of the measurement sample 13 and the amount of water vapor H A of the outside air are known, and while determining the dew condensation state from these, the calibration curve L previously prepared by the measurement sample based on this determination result.
It is intended to judge whether or not it is within the applicable range of. Therefore, the control unit 18 has the following functions. The water vapor amount H A of the outside air is obtained by calculating the absorbance of the moisture sensitive material 15. The product temperature T S is obtained by calculating the absorbance of the grain as the measurement sample 13. Obtains the dew point temperature T l commensurate with the amount of water vapor H A obtained in, in comparison with the material temperature T S determined.
If the product temperature T S is less than or equal to the dew point temperature T 1 as a result of the comparison, it is determined that there is condensation. The dew condensation judgment result is displayed and output on the display unit.
【００１０】その他、測定装置近傍温度になじんでい
る校正用試料１４の吸光度演算により、予め作成した外
気温度測定用の検量線を用いて外気温度ＴAを求める。
外気温度ＴAと水蒸気量ＨAとより、相対湿度Ｈmを算
出する。等の機能を有する。上記においては外気温度等
を試料等の吸光度測定によって検出する構成としたが、
当該外気温度，湿度，品温を夫々検出できるセンサを別
途設けてもよい。In addition, the outside air temperature T A is obtained by calculating the absorbance of the calibration sample 14 that is acclimated to the temperature in the vicinity of the measuring device, using the calibration curve for measuring the outside air temperature prepared in advance.
The relative humidity H m is calculated from the outside air temperature T A and the water vapor amount H A. It has functions such as. In the above, the outside temperature is detected by measuring the absorbance of the sample, etc.
A sensor capable of detecting the outside air temperature, the humidity, and the product temperature may be separately provided.
【００１１】上例の作用について説明する。測定試料と
して低温状態に貯蔵されている玄米をセルに詰めて試料
セットディスク７の所定位置にセットする。試料セット
ディスク７が図に示す位置にあり、チョッパ４が所定速
度で回転するものとする。このときには光源１から照射
された光はレンズ２を通過後、通過と遮断を繰返しなが
ら、通過した光はフィルタ５Ａにて設定された波長の近
赤外線のみが通過する。この透過光は反射ミラー６，投
光用レンズ９を経由して、下方で待機する校正用試料１
４に向けて照射される。The operation of the above example will be described. As a measurement sample, brown rice stored in a low temperature state is packed in a cell and set at a predetermined position of the sample setting disk 7. It is assumed that the sample set disk 7 is at the position shown in the figure and the chopper 4 rotates at a predetermined speed. At this time, the light emitted from the light source 1 passes through the lens 2 and then repeats passing and blocking, while only the near infrared rays having the wavelength set by the filter 5A pass through. The transmitted light passes through the reflecting mirror 6 and the light projecting lens 9 and stands by at the bottom for the calibration sample 1.
It is irradiated toward 4.
【００１２】上記校正用試料１４で反射された反射光
は、光電検出器８で受光されて光電変換される。光電変
換された電気信号は、増幅されＡ／Ｄ変換されて制御部
１８に入力される。このような校正用試料１４からの反
射光はチョッパ４を光が通過する度に間欠的に得られ
る。そこで、制御部１８は、光電検出器８から出力され
る複数の電気信号に基づきその平均値ＰＢi（ｉはフィ
ルタを示す）を算出する。The reflected light reflected by the calibration sample 14 is received by the photoelectric detector 8 and photoelectrically converted. The photoelectrically converted electric signal is amplified, A / D converted, and input to the control unit 18. Such reflected light from the calibration sample 14 is intermittently obtained each time the light passes through the chopper 4. Therefore, the control unit 18 calculates the average value PB i (i indicates a filter) based on the plurality of electric signals output from the photoelectric detector 8.
【００１３】次に試料セットディスク７を回転し、基準
板１２を投光部に移動させる。同様に反射光から得られ
る電気信号を測定して平均値Ｐ０iを求める。さらに試
料セットディスク７を回転すると、測定試料の平均値Ｐ
Ｘi、感湿材の平均値ＰＨiが求められる。次いで各測定
平均値から吸光度を求める。即ち、吸光度ＯＤji＝ｌｏ
ｇＰ0i／Ｐji（ｊ＝０，Ｂ，Ｈ，Ｘ）によって算出す
る。Next, the sample set disk 7 is rotated to move the reference plate 12 to the light projecting section. Similarly, the electric signal obtained from the reflected light is measured to obtain the average value P0 i . When the sample set disk 7 is further rotated, the average value P of the measured sample is
X i and the average value PH i of the moisture sensitive material are obtained. Then, the absorbance is determined from the average value of each measurement. That is, the absorbance OD ji = lo
It is calculated by gP 0i / P ji (j = 0, B, H, X).
【００１４】上記吸光度を算出すると（Ｓ１）、予め設
定していた検量線を用いて目標値ｙ、例えば測定試料穀
物の蛋白含量ｙを求める（Ｓ２）。ここでｙ＝ｋp0＋Σ
（ｋ pn・ＯＤXi）の算出式及びその定数ｋp0，ｋpn等
を、求めようとする成分毎に各設定している。なお、各
吸光度を求めるが、各検量線によって必要な波長λが設
定されて、それに対応する吸光度を求めることとなる。When the above absorbance is calculated (S1), it is set in advance.
The target value y, for example, the measurement sample grain, is determined using the calibration curve that has been set.
The protein content y of the product is determined (S2). Where y = kp0+ Σ
(K pn・ ODXi) Calculation formula and its constant kp0, Kpnetc
Is set for each component to be obtained. In addition, each
Determine the absorbance, but set the required wavelength λ for each calibration curve.
Then, the absorbance corresponding to that is determined.
【００１５】又、測定試料の吸光度測定によって当該穀
物の温度（品温）ＴSを測定できるし（Ｓ３）、校正用
試料の場合は、所定波長λにおける吸光度測定でもって
外気温度ＴAの測定ができ（Ｓ４）、感湿材１５の場合
は外気の水蒸気量ＨAを吸光度測定によって測定できる
（Ｓ５）。即ち、 ＴS＝ｋt0＋Σ（ｋtn・ＯＤXi） ＴA＝ｋa0＋Σ（ｋan・ＯＤBi） ＨA＝ｋh0＋Σ（ｋhn・ＯＤHi） で求められる（ｋ0〜ｋnは定数、ＯＤXi，ＯＤBi，ＯＤ
Hiは所定波長毎に求める吸光度）。Further, the temperature (product temperature) T S of the grain can be measured by measuring the absorbance of the measurement sample (S3), and in the case of the calibration sample, the outside air temperature T A can be measured by measuring the absorbance at a predetermined wavelength λ. (S4), and in the case of the moisture sensitive material 15, the water vapor amount H A of the outside air can be measured by absorbance measurement (S5). That is, T S = k t0 + Σ (k tn OD Xi ) T A = k a0 + Σ (k an OD Bi ) HA = k h0 + Σ (k hn OD Hi ) (k 0 to kn ) Is a constant, OD Xi , OD Bi , OD
Hi is the absorbance measured at each specified wavelength).
【００１６】以上のようにして求める品温ＴS，外気温
度ＴA，外気水蒸気量ＨAのうち、外気水蒸気量ＨＡから
当該水蒸気量に対応する露点温度Ｔｌが予め記憶部に設
定記憶された関係テーブルなどから演算され（Ｓ６）、
上記品温ＴSとの関係で結露状態となるか否かが判定さ
れる（Ｓ７）。この判定結果は表示部に文字情報でその
旨表示される（Ｓ８）。このように結露の有無を判定で
きるから、結露状態を回避できる条件のときは測定可能
として各種成分等を分析測定し、結露と判定されるとき
はこれを行なわないものとする。Of the product temperature T S , the outside air temperature T A , and the outside air water vapor amount H A obtained as described above, the dew point temperature Tl corresponding to the amount of water vapor from the outside air water vapor amount HA is set and stored in the storage unit in advance. It is calculated from the relationship table (S6),
It is determined whether or not a dew condensation state occurs in relation to the product temperature T S (S7). The result of this determination is displayed as text information on the display unit (S8). Since the presence / absence of dew condensation can be determined in this way, various components are analyzed and measured under conditions where the dew condensation state can be avoided, and not determined when dew condensation is determined.
【００１７】なお、外気温度ＴAの検出結果と外気水蒸
気量ＨAとの検出結果から相対湿度が演算され（Ｓ
９）、検量線適応に適正か否かが判定される（Ｓ１
０）。適正である場合には、校正用試料の分析値を湿度
補正し（Ｓ１１）、その補正した値が予め設定した許容
範囲内であるか否か判断される（Ｓ１２）。これが適正
である場合には、当該湿度補正を測定試料の分析値に加
味して（Ｓ１３）、上記所定の蛋白含量を精度良く得る
ことができる。The relative humidity is calculated from the detection result of the outside air temperature T A and the detection result of the outside air water vapor amount H A (S
9) It is determined whether or not the calibration curve is suitable (S1).
0). If it is proper, the analytical value of the calibration sample is humidity-corrected (S11), and it is determined whether the corrected value is within a preset allowable range (S12). If this is appropriate, the humidity correction can be added to the analysis value of the measurement sample (S13) to accurately obtain the above-mentioned predetermined protein content.
【００１８】一方品温ＴSは外気温度ＴAとの差が算出さ
れ、この差値が所定範囲内か否か判断される（Ｓ１
４）。所定内であるときは、測定良の旨表示し（Ｓ１
５）、所定範囲外のときは、品温変化の旨表示して（Ｓ
１６）、注意を促す。前記結露判定フローについて、品
温ＴS入力手段を設けることにより、冷蔵庫の設定温度
条件を入力することで、結露予測判定をすることができ
る。即ち、冷蔵庫から取りだした際の外気条件とを加味
して「結露可能性あり」と判断されるときは、測定環境
の除湿をはかることにより冷蔵材料の測定を可能とさせ
る。On the other hand, the difference between the product temperature T S and the outside air temperature T A is calculated, and it is judged whether this difference value is within a predetermined range (S1).
4). If it is within the predetermined range, a message that the measurement is good is displayed (S1
5) If the temperature is out of the predetermined range, a message indicating a change in product temperature is displayed (S
16) Call attention. With respect to the dew condensation determination flow, by providing the product temperature T S input means, the dew condensation prediction determination can be performed by inputting the set temperature condition of the refrigerator. That is, when it is determined that “condensation may occur” in consideration of the outside air condition when taken out from the refrigerator, the refrigeration material can be measured by dehumidifying the measurement environment.
【００１９】本実施例では基準板１２と並列して感湿材
１５を設置し、随時近赤外光を照射しその反射光量を基
準板１２による反射光量と比較して感湿材吸光度としそ
の吸光度より装置近傍の外気の水蒸気量を測定し、又、
校正用試料１４をさらに併設してその校正材料に対する
吸光度より装置近傍の外気の温度を測定し、併せて外気
の相対湿度を測定するから、容易に外気状態の検出がで
き、測定データの修正に用いることができる利点があ
る。In the present embodiment, the moisture sensitive material 15 is installed in parallel with the reference plate 12, irradiates near-infrared light at any time, and the reflected light amount is compared with the reflected light amount by the reference plate 12 to obtain the moisture sensitive material absorbance. Measure the amount of water vapor in the outside air near the device from the absorbance,
Since the calibration sample 14 is additionally provided and the temperature of the outside air near the device is measured from the absorbance of the calibration material, and the relative humidity of the outside air is also measured, it is possible to easily detect the outside air state and correct the measurement data. There are advantages that can be used.
【００２０】図４は別実施例を示し、集光用凸面鏡１１
からの検出光を回折格子２１を経てマルチ検出器２２に
て検出できる構成とし、光源１近傍の光を分光して照射
する構成をなくするものとしている。なお、近赤外分光
分析にあたって、対象を農産物，食品等として、当該農
産物の物理的特性や総合的特性を定量評価するものとな
るが、測定時の環境条件及び測定試料の品温又は水分含
量あるいは両者により定量評価値を補正すべく構成する
とよい。こうして従来例えば米の食味評価値，粘り指標
は品温のみならず、外気温，湿度あるいは試料の水分含
量により変化し、その測定対象物の真の品質評価が困難
であったものを、上記の構成とすれば、測定環境が変化
しても、あるいは測定試料の品温や水分が変化しても安
定した測定を行なうことができる。このため例えば、収
穫前はもちろん収穫後、貯蔵あるいは乾燥過程で水分変
化を生じてもそれ自体のもつ品質能力を評価することが
できる。なお、上記環境条件としては装置の環境温度ま
たは湿度、あるいは両者をあてる場合がある。測定試料
の品温や水分含量は個別の検出器を用いてもよく、当該
近赤外分光分析によってもよい。FIG. 4 shows another embodiment, in which the converging convex mirror 11 is used.
The detection light from is detected by the multi-detector 22 via the diffraction grating 21, and the configuration in which the light in the vicinity of the light source 1 is dispersed and irradiated is eliminated. In the near-infrared spectroscopic analysis, the target is agricultural products, foods, etc., and the physical properties and overall properties of the agricultural products are quantitatively evaluated, but the environmental conditions at the time of measurement and the product temperature or water content of the measured sample Alternatively, both may be configured to correct the quantitative evaluation value. Thus, conventionally, for example, the texture evaluation value and stickiness index of rice vary depending on not only the product temperature but also the ambient temperature, the humidity or the water content of the sample, and it is difficult to evaluate the true quality of the measurement target. With the configuration, stable measurement can be performed even if the measurement environment changes or the product temperature or water content of the measurement sample changes. Therefore, for example, it is possible to evaluate the quality capability of itself even if the water content changes during storage or drying process after harvesting as well as before harvesting. As the above-mentioned environmental conditions, there are cases where the environmental temperature or humidity of the device or both of them are applied. An individual detector may be used for the product temperature and the water content of the measurement sample, and the near infrared spectroscopic analysis may be used.
【図１】装置全体概要図である。FIG. 1 is a schematic view of the entire apparatus.
【図２】試料セットディスクの平面図である。FIG. 2 is a plan view of a sample set disc.
【図３】フロー図である。FIG. 3 is a flowchart.
【図４】別実施例を示す装置全体概要図である。FIG. 4 is an overall schematic view of an apparatus showing another embodiment.
１…光源、２…レンズ、３…スリット、４…チョッパ、
５…フィルタ付き円盤、６…反射ミラー、７…試料セッ
トディスク、８…光電検出器、９…投光用レンズ、１０
…集光用凹面鏡、１１…集光用凸面鏡、１２…参照用基
準板、１３…測定試料、１４…校正用試料、１５…感湿
材、１６…増幅器、１７…Ａ／Ｄ変換器、１８…制御
部、１９…記憶部、２０…表示部、２１…回折格子、２
２…マルチ検出器1 ... Light source, 2 ... Lens, 3 ... Slit, 4 ... Chopper,
5 ... Disc with filter, 6 ... Reflecting mirror, 7 ... Sample set disk, 8 ... Photoelectric detector, 9 ... Projector lens, 10
Condensing concave mirror, 11 Condensing convex mirror, 12 Reference reference plate, 13 Measurement sample, 14 Calibration sample, 15 Moisture sensitive material, 16 Amplifier, 17 A / D converter, 18 ... control unit, 19 ... storage unit, 20 ... display unit, 21 ... diffraction grating, 2
2 ... Multi-detector
Claims (1)
量または透過光量を計測し、測定試料の化学成分値や物
理的特性値あるいは総合的品質特性値を分析するものに
おいて、その測定部の雰囲気の温度・湿度検出手段と測
定試料の品温検出手段により、測定試料もしくは測定試
料部の結露状態を判定する結露状態判定手段を設けてな
る近赤外分光分析装置。1. A method for irradiating a measurement sample with near-infrared light, measuring the amount of reflected light or transmitted light, and analyzing the chemical component value, physical property value, or comprehensive quality property value of the measurement sample. A near-infrared spectroscopic analyzer provided with a dew condensation state judging means for judging a dew condensation state of a measurement sample or a measurement sample portion by means of a temperature / humidity detecting means of the atmosphere of the part and a product temperature detecting means of the measurement sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12494694A JPH07333144A (en) | 1994-06-07 | 1994-06-07 | Near infrared spectral analysis device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12494694A JPH07333144A (en) | 1994-06-07 | 1994-06-07 | Near infrared spectral analysis device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07333144A true JPH07333144A (en) | 1995-12-22 |
Family
ID=14898119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12494694A Pending JPH07333144A (en) | 1994-06-07 | 1994-06-07 | Near infrared spectral analysis device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07333144A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005001400A1 (en) * | 2003-06-27 | 2005-01-06 | Astem Corporation | Non-destructive spectrometric instrument |
| JP2008304191A (en) * | 2007-06-05 | 2008-12-18 | Ulvac-Riko Inc | Laser light irradiation amount adjusting mechanism for measuring sample having optical filter means, and thermal constant measuring device equipped with the mechanism |
| CN110358869A (en) * | 2019-07-03 | 2019-10-22 | 山东大学 | A kind of preparation method of the low-molecular-weight hyaluronic acid based on near-infrared spectrum technique |
| CN110446920A (en) * | 2017-03-30 | 2019-11-12 | 日本瑞翁株式会社 | The manufacturing method of hydrate detection device, aqueous object detecting method and rubber-like polymer |
-
1994
- 1994-06-07 JP JP12494694A patent/JPH07333144A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005001400A1 (en) * | 2003-06-27 | 2005-01-06 | Astem Corporation | Non-destructive spectrometric instrument |
| JP2008304191A (en) * | 2007-06-05 | 2008-12-18 | Ulvac-Riko Inc | Laser light irradiation amount adjusting mechanism for measuring sample having optical filter means, and thermal constant measuring device equipped with the mechanism |
| CN110446920A (en) * | 2017-03-30 | 2019-11-12 | 日本瑞翁株式会社 | The manufacturing method of hydrate detection device, aqueous object detecting method and rubber-like polymer |
| CN110358869A (en) * | 2019-07-03 | 2019-10-22 | 山东大学 | A kind of preparation method of the low-molecular-weight hyaluronic acid based on near-infrared spectrum technique |
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