JPS6428544A - Method and apparatus for measuring quality of fruit - Google Patents
Method and apparatus for measuring quality of fruitInfo
- Publication number
- JPS6428544A JPS6428544A JP18449787A JP18449787A JPS6428544A JP S6428544 A JPS6428544 A JP S6428544A JP 18449787 A JP18449787 A JP 18449787A JP 18449787 A JP18449787 A JP 18449787A JP S6428544 A JPS6428544 A JP S6428544A
- Authority
- JP
- Japan
- Prior art keywords
- fruit
- ratio
- inspected
- reflection factors
- reflected light
- 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
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
PURPOSE:To achieve non-destructive measurement of a sugar value and hardness of fruit, by a method wherein reflected light from fruit as object to be inspected is received to measure reflection factors corresponding to more than two kinds of wavelengths contained in a specified near infrared ray range and quality is measured by a calculated value of a ratio of the reflection factors. CONSTITUTION:A light source 1 irradiates fruit as object 3 to be inspected with light containing near infrared ray range below 3.0mum. A light receiver 4 receives reflected light from the object 3 being inspected to be inputted into a microprocessor 9. A means 5 for calculating a ratio of reflection factors measures reflection factors corresponding to two kinds of wavelengths contained in the reflected light to calculate a ratio thereof. A decision means 6 compares the calculated value with a set value by a setting means 7 to judge the quality of fruit. This enables measurement of a sugar value of fruit in a wave range of 1.35mum-1.55mum and 1.60mum-1.80mum for calculating the reflection factor ratio and the hardness thereof in the wave range of 1.10mum-1.30mum and 1.35mum-1.55mum thereby enabling non-destructive measurement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18449787A JPS6428544A (en) | 1987-07-23 | 1987-07-23 | Method and apparatus for measuring quality of fruit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18449787A JPS6428544A (en) | 1987-07-23 | 1987-07-23 | Method and apparatus for measuring quality of fruit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6428544A true JPS6428544A (en) | 1989-01-31 |
Family
ID=16154220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18449787A Pending JPS6428544A (en) | 1987-07-23 | 1987-07-23 | Method and apparatus for measuring quality of fruit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6428544A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02226048A (en) * | 1989-02-27 | 1990-09-07 | Hitachi Plant Eng & Constr Co Ltd | Method and device for measuring sugar content of mandarin oranges |
| JPH03160344A (en) * | 1989-11-17 | 1991-07-10 | Mitsubishi Heavy Ind Ltd | Device for measuring constitutions of vegetable and fruit |
| JPH04208842A (en) * | 1990-12-03 | 1992-07-30 | Aomori Pref Gov | Method and device for measuring sugar content of vegetable and fruit |
| JPH09210905A (en) * | 1996-02-06 | 1997-08-15 | Ishikawajima Harima Heavy Ind Co Ltd | Laser surface moisture detector |
| WO2016084452A1 (en) * | 2014-11-28 | 2016-06-02 | 住友林業株式会社 | Tree seed selecting method using near infrared light |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5272289A (en) * | 1975-12-12 | 1977-06-16 | Omron Tateisi Electronics Co | Fruit inspecting apparatus |
| JPS5315890A (en) * | 1976-07-28 | 1978-02-14 | Shimadzu Corp | Method of and apparatus for measuring deterioration degree of organic substance or matured degree of agricultural products |
| JPS56108579A (en) * | 1980-01-21 | 1981-08-28 | Fmc Corp | Classifier for fruit by color |
-
1987
- 1987-07-23 JP JP18449787A patent/JPS6428544A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5272289A (en) * | 1975-12-12 | 1977-06-16 | Omron Tateisi Electronics Co | Fruit inspecting apparatus |
| JPS5315890A (en) * | 1976-07-28 | 1978-02-14 | Shimadzu Corp | Method of and apparatus for measuring deterioration degree of organic substance or matured degree of agricultural products |
| JPS56108579A (en) * | 1980-01-21 | 1981-08-28 | Fmc Corp | Classifier for fruit by color |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02226048A (en) * | 1989-02-27 | 1990-09-07 | Hitachi Plant Eng & Constr Co Ltd | Method and device for measuring sugar content of mandarin oranges |
| JPH03160344A (en) * | 1989-11-17 | 1991-07-10 | Mitsubishi Heavy Ind Ltd | Device for measuring constitutions of vegetable and fruit |
| JPH04208842A (en) * | 1990-12-03 | 1992-07-30 | Aomori Pref Gov | Method and device for measuring sugar content of vegetable and fruit |
| JPH09210905A (en) * | 1996-02-06 | 1997-08-15 | Ishikawajima Harima Heavy Ind Co Ltd | Laser surface moisture detector |
| WO2016084452A1 (en) * | 2014-11-28 | 2016-06-02 | 住友林業株式会社 | Tree seed selecting method using near infrared light |
| EP3225089A4 (en) * | 2014-11-28 | 2018-07-25 | Sumitomo Forestry Co., Ltd. | Tree seed selecting method using near infrared light |
| JP2020170006A (en) * | 2014-11-28 | 2020-10-15 | 住友林業株式会社 | Tree seed selection method using near infrared light |
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