JPH08128949A - Non-destructive component analyzer of fruit and vegetable - Google Patents
Non-destructive component analyzer of fruit and vegetableInfo
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- JPH08128949A JPH08128949A JP26654194A JP26654194A JPH08128949A JP H08128949 A JPH08128949 A JP H08128949A JP 26654194 A JP26654194 A JP 26654194A JP 26654194 A JP26654194 A JP 26654194A JP H08128949 A JPH08128949 A JP H08128949A
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- transmitted light
- transmitted
- laser
- fruit
- melon
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、光を菜果等の測定対象
物に照射して得られた透過光より菜果の成分を分析する
菜果の非破壊分析装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-destructive analyzer for vegetable fruits, which analyzes the components of the vegetable fruits from the transmitted light obtained by irradiating an object to be measured such as the vegetable fruits with light.
【０００２】[0002]
【従来の技術】一般に、収穫された野菜や果物（菜果）
は種々の検査工程を経た後で出荷される。果物、特にモ
モ、ナシ、リンゴの検査工程の中には、糖度測定器を用
いて光学的に糖度の成分を検査する工程がある。これは
果物に光を照射し、その反射した光量から吸光度を測定
し成分濃度を計測するものである。2. Description of the Related Art Generally, harvested vegetables and fruits (vegetables)
Are shipped after undergoing various inspection processes. Among the inspection processes of fruits, especially peach, pear and apple, there is a process of optically inspecting sugar content components using a sugar content measuring instrument. This is to irradiate fruit with light and measure the absorbance from the amount of reflected light to measure the component concentration.
【０００３】この糖度測定器の光源にはハロゲンランプ
が用いられている。ハロゲンランプは広域に渡る発光ス
ペクトルを有しており、回折格子等で波長選択された光
（近赤外線）が果物に照射されるようになっている。A halogen lamp is used as a light source of this sugar content measuring instrument. The halogen lamp has an emission spectrum over a wide range, and the fruit (near infrared rays) whose wavelength is selected by a diffraction grating or the like is irradiated on the fruit.
【０００４】このような糖度測定器はモモやナシのよう
に、皮が薄く外周部に甘い部分（果肉）を有する果物の
糖度を検査する場合は、比較的容易に糖度の測定ができ
る。Such a sugar content measuring device can relatively easily measure the sugar content when inspecting the sugar content of a fruit such as peach or pear which has a thin skin and a sweet portion (flesh) on the outer periphery.
【０００５】しかし、メロンやスイカのように皮が厚く
内部に糖分を有する果物を検査する場合、ハロゲンラン
プの光は単位面積当たりのパワーが弱く、厚い皮で光が
極度に減衰してしまい糖度を測定することは困難であ
る。However, when inspecting fruits such as melons and watermelons that have a thick skin and sugar inside, the light of the halogen lamp has a weak power per unit area, and the light is extremely attenuated by the thick skin, and the sugar content is high. Is difficult to measure.
【０００６】これに対して光源にＬＤ（レーザダイオー
ド）を用いた「食品の成分測定装置」が提案されている
（特開平３−１７６６４５号公報）。On the other hand, a "food component measuring device" using an LD (laser diode) as a light source has been proposed (JP-A-3-176645).
【０００７】この成分測定装置は、０．７６μｍ〜０．
９７μｍ、０．９７μｍ〜１．２０μｍ、１．２０μｍ
〜１．４３μｍ、１．４３μｍ〜１．９４μｍの範囲
で、シャープな波長（半値幅４ｎｍ以下）の光として、
半導体レーザを食品に照射し、その透過又は反射した光
の量から吸光度を測定し食品の成分濃度を計測するもの
である。ＬＤは波長の単一性の面ではハロゲンランプよ
りも優れており、集光性もよく、単位体積当りのパワー
が強くメロン等の果物の厚い果皮を透過することができ
る特徴がある。[0007] This component measuring device, 0.76μm ~ 0.
97 μm, 0.97 μm to 1.20 μm, 1.20 μm
In the range of ˜1.43 μm, 1.43 μm to 1.94 μm, as light of a sharp wavelength (half-value width 4 nm or less),
The food is irradiated with a semiconductor laser, and the absorbance is measured from the amount of light transmitted or reflected to measure the component concentration of the food. The LD is superior to the halogen lamp in terms of wavelength uniformity, has a good light-collecting property, has a strong power per unit volume, and can penetrate a thick skin of a fruit such as melon.
【０００８】[0008]
【発明が解決しようとする課題】ここで、測定対象物の
一例としてのメロンについて述べる。Here, a melon as an example of an object to be measured will be described.
【０００９】メロンはウリ科であり、品種改良により数
多くの種類がある。代表的なものを挙げると例えば、マ
スクメロン、夕張メロン、アンデスメロン、プリンスメ
ロン、ハネデューがある。Melon belongs to the family Cucurbitaceae, and there are many kinds due to breed improvement. Typical examples are Muskmelon, Yubari Melon, Andes Melon, Prince Melon, and Honeydew.
【００１０】マスクメロンの皮（果皮）にはネットがあ
り、その重さは１．２Ｋｇ〜１．６Ｋｇある。果肉は緑
色で柔らかく、果汁が多い。ジャコウを意味するマスク
の名を有しているように、香りが高く、味、風味、外観
とも最高級品の風格がある。さらに別名「温室メロン」
というように、日本ではガラス製の温室でしか栽培でき
ず、１株に１個しか実をつけないようにするなど労力、
高度な技術が必要なこともあって最も高価な果物の一つ
である。[0012] Muskmelon skin (pericarp) has a net, and its weight is 1.2 kg to 1.6 kg. The flesh is green and soft, and has a lot of juice. As it has the name of mask, which means musk, it has a high scent and has the finest quality in taste, flavor and appearance. Also known as "greenhouse melon"
In Japan, it can be cultivated only in a glass greenhouse, and labor is required to produce only one fruit per strain.
It is one of the most expensive fruits due to the need for advanced technology.
【００１１】夕張メロンは北海道夕張地方の特産として
知られており、その大きさはマスクメロン程の大きさで
ある。果皮にはネットがあり、果肉は濃いオレンジ色で
ある。ねっとりとして甘みが濃厚である。熟期が短く、
生産量が少ないのでやや高価である。Yubari melon is known as a special product in the Yubari region of Hokkaido, and its size is about the same as musk melon. The skin has a net and the flesh is a dark orange color. It is thick and sweet. Short maturity,
It is a little expensive because the production is small.
【００１２】アンデスメロンは、やや小型の球形で、果
皮には細かいネットがある。果肉は緑色で、甘みが強
く、マスクメロンに似た味を有している。[0012] The Andes melon has a slightly small spherical shape and has a fine net on the skin. The flesh is green, sweet and has a taste similar to cantaloupe.
【００１３】プリンスメロンは、小型の球形で４００ｇ
〜８００ｇ程度の重さがある。果皮は淡緑色でネットが
なくなめらかであり、果肉は薄いオレンジ色で厚みはあ
まりないが味は甘い。Prince Melon is a small sphere of 400 g.
It weighs about 800 g. The skin is light green and smooth without a net. The flesh is light orange and not very thick, but the taste is sweet.
【００１４】ハネデューは、１．５Ｋｇ〜２Ｋｇの重さ
がある。果皮は白いがネットはない。果肉は淡緑色で厚
く、ねっとりして甘みがある。Honeydew weighs between 1.5 kg and 2 kg. The pericarp is white but there is no net. The flesh is light green and thick, and it is moist and sweet.
【００１５】メロンの主成分は糖質で、甘みの主体はシ
ョ糖であり、果糖、ブドウ糖も少量だが含まれている。
成熟するにつれてショ糖が急増して甘くなる。甘みは中
心部の種子に近い部分ほど強い。The main ingredient of melon is sugar, the main sweetener is sucrose, and fructose and glucose are contained in a small amount.
As it matures, sucrose increases rapidly and becomes sweet. Sweetness is stronger near the seeds in the center.
【００１６】また、メロンは成熟し過ぎると発酵してア
ルコール臭が出ると共に、発酵によって発生した二酸化
炭素（炭酸ガス）のために舌をさすような味になるの
で、食味期日が指定されているのが普通である。When the melon is fermented too much, it is fermented to give off an alcoholic odor, and the carbon dioxide (carbon dioxide) generated by the fermentation causes the mouth to taste, so the taste date is specified. Is normal.
【００１７】以上のように、メロンはその品種によって
ネットの有無、果皮、糖度、水分の量、食味期日等が微
妙に異なっている。As described above, the presence or absence of net, the peel, the sugar content, the amount of water, and the eating date of melon are subtly different depending on the variety.
【００１８】そのため、検査すべきメロンの種類に応じ
てレーザ光の波長や照射時間、照射エネルギー等を変え
る必要がある。Therefore, it is necessary to change the wavelength of the laser beam, the irradiation time, the irradiation energy, etc. according to the type of melon to be inspected.
【００１９】ところで上述したＬＤによる測定装置で
は、ＬＤの温度を変えることにより発振波長を変えてい
る。しかし単一のＬＤの発振波長可変域には限界があ
り、近赤外線領域すべてをカバーすることは困難であ
る。また、ＬＤの発振波長を変える場合にはＬＤの温度
を変えているため、波長をｎｍ単位で長くするためには
大幅に変化させなければならず、頻繁に波長を変えて検
査すると温度衝撃を与えることとなりＬＤの寿命を短く
する要因にもなりかねない。By the way, in the measuring apparatus using the LD described above, the oscillation wavelength is changed by changing the temperature of the LD. However, the oscillation wavelength variable range of a single LD is limited, and it is difficult to cover the entire near infrared region. Further, when changing the oscillation wavelength of the LD, the temperature of the LD is changed, and therefore, the wavelength must be changed significantly in order to lengthen the wavelength in nm units. It will be given and may become a factor to shorten the life of the LD.
【００２０】そこで、本発明の目的は、上記課題を解決
し、メロン等異なる種類の厚皮菜果の成分を、広い波長
域で、かつ、非破壊で精度よく検査できる菜果の非破壊
成分分析装置を提供することにある。Therefore, an object of the present invention is to solve the above-mentioned problems and to non-destructively and accurately inspect components of different types of thick-leaved rape fruits such as melon in a wide wavelength range and in a non-destructive manner. It is to provide an analyzer.
【００２１】[0021]
【課題を解決するための手段】上記目的を達成するため
に本発明は、光を菜果等の測定対象物に照射して得られ
た透過光より菜果の成分を分析する非破壊成分分析装置
において、発振波長が連続的に可変自在な光パラメトリ
ック発振レーザと、光パラメトリック発振レーザからの
照射ビームが測定対象物に照射されるように制御する照
射ビーム制御手段と、測定対象物を透過した透過レーザ
光を集光する透過光集光手段と、該透過光集光手段で集
光された透過光を検出する透過光検出手段と、透過光検
出手段からの信号より透過光スペクトルの信号処理演算
を行う信号処理演算手段とを備えたものである。In order to achieve the above object, the present invention provides a non-destructive component analysis for analyzing the components of rapeseed fruits from the transmitted light obtained by irradiating a measuring object such as rapeseed fruits with light. In the device, an optical parametric oscillation laser whose oscillation wavelength is continuously variable, irradiation beam control means for controlling the irradiation beam from the optical parametric oscillation laser to irradiate the measurement target, and the measurement target Transmitted light condensing means for condensing transmitted laser light, transmitted light detecting means for detecting transmitted light condensed by the transmitted light condensing means, and signal processing of a transmitted light spectrum from a signal from the transmitted light detecting means. And a signal processing calculation means for performing calculation.
【００２２】[0022]
【作用】上記構成によれば、集光性のよいレーザ光を用
いたので、単位面積当りのパワーを高くすることがで
き、厚い皮を透過させることが容易となる。光パラメト
リック発振レーザを用いたので、照射ビームの波長を広
範囲に渡って連続的に可変させることができ、従って測
定対象物を幅広い連続スペクトル観測にて測定対象物の
種々の成分を検出して、菜果、特にメロン等の厚皮菜果
の糖分、水分、アルコール等を測定してメロンの糖度の
精度よい分析が行え、食味期日等の総合的な分析が行え
る。According to the above construction, since the laser light having a good converging property is used, the power per unit area can be increased and the thick skin can be easily transmitted. Since an optical parametric oscillation laser is used, the wavelength of the irradiation beam can be continuously varied over a wide range, and therefore the measurement target is detected by various continuous spectrum observations of various components of the measurement target, By measuring sugar content, water content, alcohol, etc. of rapeseed, especially thick-leaved rapeseed such as melon, the sugar content of melon can be accurately analyzed, and comprehensive analysis such as the taste date can be performed.
【００２３】[0023]
【実施例】以下、本発明の一実施例を添付図面に基づい
て詳述する。An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
【００２４】図１は本発明の菜果の非破壊成分分析装置
の一実施例を示すブロック図である。FIG. 1 is a block diagram showing an embodiment of the apparatus for nondestructive component analysis of vegetable fruits according to the present invention.
【００２５】同図において、１は発振波長が近赤外域
（７５０ｎｍ〜２５００ｎｍ）で連続的に可変な光パラ
メトリック発振レーザ（Ｏｐｔｉｃａｌ Ｐａｒａｍｅ
ｔｒｉｃ Ｏｓｃｉｌｌａｔｉｏｎレーザ、以下「ＯＰ
Ｏレーザ」という。）である。ＯＰＯレーザ１はパルス
発振状されるようになっている。In FIG. 1, reference numeral 1 denotes an optical parametric oscillation laser (Optical Parameter) whose oscillation wavelength is continuously variable in the near infrared region (750 nm to 2500 nm).
tric Oscillation laser, "OP
O laser ”. ). The OPO laser 1 is adapted to be pulse-oscillated.
【００２６】２はＯＰＯレーザ１からの照射ビームをコ
リメートして測定対象物（厚皮の菜果、例えばメロン）
３に照射するための制御手段であり、例えばミラーとレ
ンズからなっている。Reference numeral 2 is an object to be measured by collimating the irradiation beam from the OPO laser 1 (vegetables of thick skin, for example, melon).
It is a control means for irradiating 3 and comprises, for example, a mirror and a lens.
【００２７】４はメロン３を透過した透過レーザ光を集
光する透過光集光手段であり、例えばレンズとミラーと
からなっている。Reference numeral 4 denotes a transmitted light condensing means for condensing the transmitted laser light transmitted through the melon 3, which is composed of, for example, a lens and a mirror.
【００２８】５は透過光集光手段４で集光された透過光
を検出する透過光検出手段であり、例えばフォトダイオ
ード（もしくは光電子増倍菅などの高感度検出器および
高速アンプ）からなっている。Reference numeral 5 denotes a transmitted light detecting means for detecting the transmitted light condensed by the transmitted light condensing means 4, and is composed of, for example, a photodiode (or a high sensitivity detector such as a photomultiplier tube and a high speed amplifier). There is.
【００２９】６は透過光検出手段５からの信号より透過
光スペクトルの信号処理演算を行う信号処理演算手段で
あり、例えばマイクロコンピュータ、メモリからなって
いる。信号処理演算手段６はメモリを有しており、メモ
リにはメロンの種類に応じた成分（ショ糖、果糖、ブド
ウ糖、水分、アルコール等）の含有量等の情報が格納さ
れている。Reference numeral 6 denotes a signal processing calculation means for performing signal processing calculation of the transmitted light spectrum from the signal from the transmitted light detection means 5, which is composed of, for example, a microcomputer and a memory. The signal processing calculation means 6 has a memory, and the memory stores information such as the content of components (sucrose, fructose, glucose, water, alcohol, etc.) according to the type of melon.
【００３０】次に実施例の作用を述べる。Next, the operation of the embodiment will be described.
【００３１】ＯＰＯレーザ１から照射ビームが出射する
と、照射ビーム制御手段２でコリメートされると共にメ
ロン３の中心を透過するように照射される。メロン３を
透過したレーザ光は、透過光集光手段４で集光され、透
過光検出手段５で検出される。ＯＰＯレーザ１は１台で
広い範囲に渡って連続的に発振波長を変化させることが
できるので、信号処理演算手段６では透過光検出手段５
からの信号よりメロン３について幅広く透過スペクトル
を観測することができる。このためメロン３の種類に応
じてその成分を精度よく測定することができる。例え
ば、信号処理演算手段６は測定して得られたショ糖、果
糖やブドウ糖の波長に対応した吸光度のデータとメモリ
に格納されたデータとを比較して糖度を測定することが
できる。また、メロンの水分の量や繊維質の量も測定す
ることができる。さらに、アルコールの波長に対応した
吸光度のデータとメモリに格納されたデータとを比較し
てメロンの成熟度を判定することによりメロンごとに食
味期日を指定する等総合的な分析ができる。When the irradiation beam is emitted from the OPO laser 1, it is collimated by the irradiation beam control means 2 and is irradiated so as to pass through the center of the melon 3. The laser light transmitted through the melon 3 is condensed by the transmitted light condensing means 4 and detected by the transmitted light detecting means 5. Since the single OPO laser 1 can continuously change the oscillation wavelength over a wide range, the transmitted light detection means 5 is used in the signal processing calculation means 6.
A wider transmission spectrum can be observed for the melon 3 from the signal from. Therefore, the component can be accurately measured according to the type of melon 3. For example, the signal processing calculation means 6 can measure the sugar content by comparing the absorbance data corresponding to the wavelengths of sucrose, fructose and glucose obtained by the measurement with the data stored in the memory. Further, the amount of water and the amount of fiber of the melon can be measured. Furthermore, by comparing the data of the absorbance corresponding to the wavelength of alcohol with the data stored in the memory to judge the maturity of the melon, a comprehensive analysis such as designating the eating date for each melon can be performed.
【００３２】このように本実施例の非破壊成分分析装置
は、測定対象物としてのメロンに照射する光として集光
性のよいレーザを用いたので、単位体積当りのパワーを
高くすることができ、容易に厚い果皮を透過させること
ができる。また、レーザ光源としてＯＰＯレーザ１を用
いたので、照射ビームの波長を広範囲に渡って連続的に
可変させることができ幅広い連続スペクトルを観測する
ことにより、スペクトルの高次微分等の幅広い演算処理
が可能となり、異なる種類のメロンの成分を精度よく分
析でき、食味期日の判定等総合的な測定ができる。ま
た、本実施例の非破壊成分分析装置は出荷時の全数調査
にも利用できる。As described above, since the nondestructive component analyzer of this embodiment uses the laser having a good light-collecting property as the light for irradiating the melon as the measurement object, the power per unit volume can be increased. , Can easily penetrate thick skin. Further, since the OPO laser 1 is used as the laser light source, the wavelength of the irradiation beam can be continuously varied over a wide range, and by observing a wide continuous spectrum, a wide range of arithmetic processing such as high-order derivative of the spectrum can be performed. This makes it possible to analyze different types of melon components with high accuracy and to make comprehensive measurements such as determining the taste date. In addition, the nondestructive component analyzer of the present embodiment can be used for 100% inspection at the time of shipment.
【００３３】以上において本実施例によれば、ＯＰＯレ
ーザからの照射ビームをメロンに照射し、その透過光ス
ペクトルを測定することにより、精度のよい非破壊分析
を行うことができる。尚、本実施例では測定対象物とし
てメロンを用いたが、これに限定されるものではなく、
スイカやカボチャ等の厚皮菜果を測定対象物として成分
分析や成熟度の判定を行ってもよい。As described above, according to this embodiment, the irradiation beam from the OPO laser is irradiated onto the melon, and the transmitted light spectrum is measured, so that the nondestructive analysis can be performed with high accuracy. Although melon was used as the measurement object in this example, the measurement object is not limited to this.
It is also possible to analyze the components and determine the maturity level using thick-leaved vegetables such as watermelon and pumpkin as the measurement target.
【００３４】[0034]
【発明の効果】以上要するに本発明によれば、次のよう
な優れた効果を発揮する。In summary, according to the present invention, the following excellent effects are exhibited.
【００３５】発振波長が連続的に可変自在な光パラメト
リック発振レーザからの照射ビームを非測定対象物に照
射してその透過光より成分分析するので、メロン等異な
る種類の厚皮菜果を広い波長域で、かつ、精度よく非破
壊で検査できる。Since a non-measurement object is irradiated with an irradiation beam from an optical parametric oscillation laser whose oscillation wavelength can be continuously varied and component analysis is performed based on the transmitted light, different types of thick-leaved fruits such as melons having a wide wavelength range can be obtained. It can be inspected in the area accurately and nondestructively.
【図１】本発明の菜果の非破壊成分分析装置の一実施例
を示すブロック図である。FIG. 1 is a block diagram showing an embodiment of a non-destructive component analysis apparatus for vegetable and vegetable according to the present invention.
１ 光パラメトリック発振レーザ（ＯＰＯレーザ） ２ 照射ビーム制御手段 ３ 測定対象物（メロン等の厚皮菜果） ４ 透過光集光手段 ５ 透過光検出手段 ６ 透過光スペクトルの信号処理演算手段（信号処理演
算手段）DESCRIPTION OF SYMBOLS 1 Optical parametric oscillation laser (OPO laser) 2 Irradiation beam control means 3 Measuring object (thick skinned fruits such as melon) 4 Transmitted light converging means 5 Transmitted light detecting means 6 Transmitted light spectrum signal processing operation means (signal processing) (Calculation means)
───────────────────────────────────────────────────── フロントページの続き (72)発明者 吉村 香里 東京都江東区豊洲三丁目１番15号 石川島 播磨重工業株式会社東二テクニカルセンタ ー内 (72)発明者 高田 公久 東京都渋谷区千駄ケ谷５丁目32番７号 石 川島芝浦機械株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kaori Yoshimura 3-15-1, Toyosu, Koto-ku, Tokyo Ishikawajima Harima Heavy Industries Co., Ltd. Toni Technical Center (72) Inventor Kimohisa Takada 5-chome Sendagaya, Shibuya-ku, Tokyo No. 32-7 Ishi Kawashima Shibaura Machinery Co., Ltd.
Claims (1)
れた透過光より菜果の成分を分析する非破壊成分分析装
置において、発振波長が連続的に可変自在な光パラメト
リック発振レーザと、該光パラメトリック発振レーザか
らの照射ビームが測定対象物に照射されるように制御す
る照射ビーム制御手段と、該測定対象物を透過した透過
レーザ光を集光する透過光集光手段と、該透過光集光手
段で集光された透過光を検出する透過光検出手段と、該
透過光検出手段からの信号より透過光スペクトルの信号
処理演算を行う信号処理演算手段とを備えたことを特徴
とする菜果の非破壊成分分析装置。1. An optical parametric oscillation in which the oscillation wavelength is continuously variable in a nondestructive component analyzer that analyzes the components of rapeseed fruits from the transmitted light obtained by irradiating a measurement object such as rapeseed fruits with light. A laser, an irradiation beam control means for controlling the irradiation beam from the optical parametric oscillation laser so as to irradiate the measuring object, and a transmitted light condensing means for condensing the transmitted laser light transmitted through the measuring object. A transmitted light detecting means for detecting the transmitted light collected by the transmitted light collecting means, and a signal processing operation means for performing a signal processing operation of a transmitted light spectrum from a signal from the transmitted light detecting means. A nondestructive component analysis device for vegetable and vegetables.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26654194A JPH08128949A (en) | 1994-10-31 | 1994-10-31 | Non-destructive component analyzer of fruit and vegetable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26654194A JPH08128949A (en) | 1994-10-31 | 1994-10-31 | Non-destructive component analyzer of fruit and vegetable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08128949A true JPH08128949A (en) | 1996-05-21 |
Family
ID=17432298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26654194A Withdrawn JPH08128949A (en) | 1994-10-31 | 1994-10-31 | Non-destructive component analyzer of fruit and vegetable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08128949A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998002777A1 (en) * | 1996-07-13 | 1998-01-22 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Laser device |
| CN100427931C (en) * | 2006-04-10 | 2008-10-22 | 浙江大学 | Method and apparatus for detecting fruit surface defect based on laser image |
-
1994
- 1994-10-31 JP JP26654194A patent/JPH08128949A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6320886B1 (en) | 1996-07-12 | 2001-11-20 | The Secretary Of Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britian And Northern Ireland | Laser device |
| WO1998002777A1 (en) * | 1996-07-13 | 1998-01-22 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Laser device |
| AU719325B2 (en) * | 1996-07-13 | 2000-05-04 | Qinetiq Limited | Laser device |
| CN100427931C (en) * | 2006-04-10 | 2008-10-22 | 浙江大学 | Method and apparatus for detecting fruit surface defect based on laser image |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20020115 |