JPS57139669A - Method for measuring electric constant - Google Patents

Method for measuring electric constant

Info

Publication number
JPS57139669A
JPS57139669A JP2429081A JP2429081A JPS57139669A JP S57139669 A JPS57139669 A JP S57139669A JP 2429081 A JP2429081 A JP 2429081A JP 2429081 A JP2429081 A JP 2429081A JP S57139669 A JPS57139669 A JP S57139669A
Authority
JP
Japan
Prior art keywords
energy
conductivity
fruit
substance
container
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
Application number
JP2429081A
Other languages
Japanese (ja)
Inventor
Hisashi Tsuruoka
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2429081A priority Critical patent/JPS57139669A/en
Publication of JPS57139669A publication Critical patent/JPS57139669A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant

Abstract

PURPOSE:To determine conductivity of a substance without contact, by putting the substance in a container which is filled up with liquid having known con- ductivity, and obtaining the difference between the energy of total electric field when a voltage is a regulating potential and the energy of total electric field when the regulating potential is not given. CONSTITUTION:The picture of a fruit 23 and the like is obtained as an electric signal by a camera 24, the signal is given to a digital computer 26, and a finite element model is formed by accumulating outer configuration information. Then the fruit 23 is put in the container which is filled up with the liquid 30 having the specified conductivity and around which a plurality of electrodes 31 are arranged. A voltage is applied to a print RP of the container 29, a waveform is obtained from the electrodes 31, and the wave hight value and the phase are inputted into the computer 26. The total electric field energy when the voltages is the regulating potential and the energy when the regulating potential is not given are computed. By using the difference therebetween, the conductivity in the fruit 23 is measured, and the degree f saccharic acid is determined. By obtaining the conductivity and permitivity without contact, the structure and composition of the substance can be clarified.
JP2429081A 1981-02-23 1981-02-23 Method for measuring electric constant Pending JPS57139669A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2429081A JPS57139669A (en) 1981-02-23 1981-02-23 Method for measuring electric constant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2429081A JPS57139669A (en) 1981-02-23 1981-02-23 Method for measuring electric constant

Publications (1)

Publication Number Publication Date
JPS57139669A true JPS57139669A (en) 1982-08-28

Family

ID=12134037

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2429081A Pending JPS57139669A (en) 1981-02-23 1981-02-23 Method for measuring electric constant

Country Status (1)

Country Link
JP (1) JPS57139669A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112705489A (en) * 2020-12-02 2021-04-27 浙江炬芯微电子有限公司 Electric energy meter detection device, sorting device and sorting method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112705489A (en) * 2020-12-02 2021-04-27 浙江炬芯微电子有限公司 Electric energy meter detection device, sorting device and sorting method

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