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GB2009393A - Photoelectric investigation of crops - Google Patents

Photoelectric investigation of crops

Info

Publication number
GB2009393A
GB2009393A GB7836673A GB7836673A GB2009393A GB 2009393 A GB2009393 A GB 2009393A GB 7836673 A GB7836673 A GB 7836673A GB 7836673 A GB7836673 A GB 7836673A GB 2009393 A GB2009393 A GB 2009393A
Authority
GB
United Kingdom
Prior art keywords
tuned circuit
transmitter
receiver
physical characteristic
monitoring
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.)
Withdrawn
Application number
GB7836673A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pickett A J F
Original Assignee
Pickett A J F
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pickett A J F filed Critical Pickett A J F
Priority to GB7836673A priority Critical patent/GB2009393A/en
Publication of GB2009393A publication Critical patent/GB2009393A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34—Sorting according to other particular properties
    • B07C5/342—Sorting according to other particular properties according to optical properties, e.g. colour

Landscapes

  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

Apparatus for determining a physical characteristic of a food crop 5 e.g. vegetable or fruit, comprises a transmitter of near infrared radiation 4 e.g. at 0.9 microns, a receiver 6, a tuned circuit 8 connected to receive an electrical signal from said receiver, an oscillator 7 that controls the frequency of the the transmitter 4 and the oscillation frequency of the tuned circuit 8, and a data analyser 10 capable of comparing the output from the tuned circuit 8 with at least one reference signal of a magnitude corresponding to said predetermined physical characteristic. The apparatus can be used to sort ripe and unripe tomatoes, for monitoring a bulk crop in storage, e.g. bananas, or for monitoring crops during growth. <IMAGE>
GB7836673A 1977-09-16 1978-09-13 Photoelectric investigation of crops Withdrawn GB2009393A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7836673A GB2009393A (en) 1977-09-16 1978-09-13 Photoelectric investigation of crops

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB3866677 1977-09-16
GB7836673A GB2009393A (en) 1977-09-16 1978-09-13 Photoelectric investigation of crops

Publications (1)

Publication Number Publication Date
GB2009393A true GB2009393A (en) 1979-06-13

Family

ID=26263879

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7836673A Withdrawn GB2009393A (en) 1977-09-16 1978-09-13 Photoelectric investigation of crops

Country Status (1)

Country Link
GB (1) GB2009393A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986000420A1 (en) * 1984-06-25 1986-01-16 Enpece Ab Method and device for non-contact detection of plants
GB2172699A (en) * 1985-03-19 1986-09-24 Anzai Mfg Co Ltd Apparatus and method for separating mixed products

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986000420A1 (en) * 1984-06-25 1986-01-16 Enpece Ab Method and device for non-contact detection of plants
GB2172699A (en) * 1985-03-19 1986-09-24 Anzai Mfg Co Ltd Apparatus and method for separating mixed products

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)