JPH03100449A - Device for judging freshness of vegetable and fruit or the like - Google Patents
Device for judging freshness of vegetable and fruit or the likeInfo
- Publication number
- JPH03100449A JPH03100449A JP23781389A JP23781389A JPH03100449A JP H03100449 A JPH03100449 A JP H03100449A JP 23781389 A JP23781389 A JP 23781389A JP 23781389 A JP23781389 A JP 23781389A JP H03100449 A JPH03100449 A JP H03100449A
- Authority
- JP
- Japan
- Prior art keywords
- impedance
- heater
- fruits
- vegetables
- freshness
- 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
- 235000013399 edible fruits Nutrition 0.000 title abstract description 13
- 235000013311 vegetables Nutrition 0.000 title abstract description 13
- 238000002847 impedance measurement Methods 0.000 claims abstract description 15
- 235000012055 fruits and vegetables Nutrition 0.000 claims description 21
- 238000001514 detection method Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 abstract description 6
- 238000001035 drying Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 235000019688 fish Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
従来の技術
一般家庭・流通段階・生産地において、各種水産物・水
産物の品種は外観に重点がおかれ判定されている。品種
評価の機器は、相当高度な破壊分析を行ない判定するた
め、これら機器が一般家庭に入る余地はなかったが、最
近の研究によって、青果物ないし魚類の鮮度を判定する
方法として、これらのインピーダンスの変化を測定して
鮮度を判定する方法が確立されつつあり、製品としても
小型・軽量な物も考案されてきている。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application Conventional Technology In general households, distribution stages, and production areas, various marine products and varieties of marine products are judged with emphasis on appearance. Devices for variety evaluation use highly sophisticated destructive analysis to make judgments, so there was no room for these devices to be used in ordinary households, but recent research has shown that these impedance values can be used as a method for determining the freshness of fruits, vegetables, and fish. Methods for determining freshness by measuring changes are being established, and smaller and lighter products are being devised.
−例として、特開昭６３−２５９４５２号公報「青果物
の接触および非接触による鮮度判定方法」がある。- As an example, there is ``Contact and non-contact freshness determination method for fruits and vegetables'' in Japanese Patent Application Laid-Open No. 63-259452.
以下に、従来の青果物等の鮮度判定器の構成と動作を説
明する。The configuration and operation of a conventional freshness determination device for fruits and vegetables will be explained below.
第２図は、従来の青果物等の鮮度判定器の構成図である
。FIG. 2 is a block diagram of a conventional freshness determination device for fruits and vegetables.
１は例えばリンゴ等の青果物、２ａおよび２ｂは青果物
１に接触し交流電圧を印加する一対の電極、３ａおよび
３ｂは電極２ａおよび２ｂと接触した時導電する一対の
電極板である。４は電極２ａおよび２ｂ、電極板３ａお
よび３ｂの間に配置されたばねであり、青果物１と電極
２ａおよび２ｂが接触しない時は電極と電極板は互いに
非接触になる様にしている。５はｔ ＠ ２ ａおよび
２ｂが動き易くするためのガイド、６は電極を包む外箱
、７は青果物１のインピーダンスを測定するインピーダ
ンス測定手段、８はこのインピーダンス測定手段７にて
測定された値を基に鮮度を判定する鮮度判定手段、９は
鮮度を表示する鮮度表示ディスプレイである。Reference numeral 1 designates a fruit or vegetable such as an apple, a pair of electrodes 2a and 2b which contact the fruit or vegetable 1 and apply an alternating current voltage, and a pair of electrode plates 3a and 3b which conduct electricity when in contact with the electrodes 2a and 2b. A spring 4 is arranged between the electrodes 2a and 2b and the electrode plates 3a and 3b, so that when the fruits and vegetables 1 are not in contact with the electrodes 2a and 2b, the electrodes and the electrode plates are not in contact with each other. 5 is a guide for making it easy for t@2a and 2b to move; 6 is an outer box that encloses the electrode; 7 is an impedance measuring means for measuring the impedance of the fruits and vegetables 1; and 8 is a value measured by this impedance measuring means 7. 9 is a freshness display display for displaying the freshness.
以上の様な構成をもった従来の青果物等の鮮度判定器に
ついて、動作を説明する。The operation of the conventional freshness determination device for fruits and vegetables, etc. having the above-described configuration will be explained.
青果物１に電極２ａおよび２ｂを強く接触させるとばね
４が押さえられ、電極と電極板の２ａと３ａ、２ｂと３
ｂが接触し、インピーダンス測定手段７より発生した電
圧は青果物１に印加されインピーダンス測定手段７では
このインピーダンスを測定することができる。鮮度判定
手段８では予め入力しであるインピーダンス値とインピ
ーダンス測定手段７で測定されたインピーダンス値を比
較し鮮度の判定を行なう。この結果は鮮度表示ディスプ
レイ９に出力され、鮮度表示ディスプレイ９では所定の
表示をして使用者に青果物１の鮮度を伝える。When the electrodes 2a and 2b are brought into strong contact with the fruit or vegetable 1, the spring 4 is pressed, and the electrodes 2a and 3a, 2b and 3 of the electrode plate are pressed.
b comes into contact, a voltage generated by the impedance measuring means 7 is applied to the fruits and vegetables 1, and the impedance measuring means 7 can measure this impedance. The freshness determining means 8 compares the impedance value input in advance with the impedance value measured by the impedance measuring means 7 to determine the freshness. This result is output to the freshness display 9, and the freshness display 9 displays a predetermined display to inform the user of the freshness of the fruits and vegetables 1.
発明が解決しようとする課題
しかし、従来の構成ないし動作では、青果物１には水分
が含まれているため、測定後電極２ａおよび２ｂの先端
には水分が付着し、このまま次の測定を行なうと、付着
している水分のために真のインピーダンスが計れないと
いう課題があった。Problems to be Solved by the Invention However, in the conventional configuration and operation, since the fruits and vegetables 1 contain moisture, moisture adheres to the tips of the electrodes 2a and 2b after measurement, and if the next measurement is performed as it is, However, there was a problem in that true impedance could not be measured due to attached moisture.
本発明は、上記課題を解決するため、水分が付着しても
真のインビータンスが計れる青果物等の鮮度判定器を提
供することを目的としている。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, it is an object of the present invention to provide a freshness determination device for fruits and vegetables that can measure true impedance even when moisture is attached.
課題を解決するための手段
上記目的を達成するために、本発明の青果物等の鮮度判
定器は青果物等に接触し交流電圧を印加する電極と、青
果物等のインピーダンスを測定するインピーダンス測定
手段と、このインピーダンス測定手段にて測定された値
を基に鮮度を判定する鮮度判定手段と、前記電極に巻き
付けたヒータと、前記インピーダンス測定手段が作動し
たかどうか検知するインピーダンス測定検知手段と、こ
のインピーダンス測定検知手段が作動した時、前記ヒー
タに通電するヒータ通電手段を備えた構成である。Means for Solving the Problems In order to achieve the above objects, the freshness determination device for fruits and vegetables of the present invention includes an electrode that contacts fruits and vegetables and applies an alternating current voltage, an impedance measuring means that measures the impedance of fruits and vegetables, and the like. a freshness determination means for determining freshness based on the value measured by the impedance measurement means; a heater wound around the electrode; an impedance measurement detection means for detecting whether the impedance measurement means is activated; The configuration includes heater energizing means that energizes the heater when the detection means is activated.
作用
本発明は、上記した構成により、インピーダンス測定検
知手段にて青果物のインピーダンスを測定していないこ
とを検知し、ヒータ通電手段にてヒータに通電して！極
の水分を乾燥させることを可能としている。According to the present invention, with the above-described configuration, the impedance measurement detection means detects that the impedance of fruits and vegetables is not measured, and the heater energization means energizes the heater! This makes it possible to dry the moisture at the poles.
実施例
第１図は、本発明の実施例の構成図であり、従来例と同
一名称、同一動作のものについては同一番号を付し、説
明を省略する。Embodiment FIG. 1 is a block diagram of an embodiment of the present invention. Components having the same names and operations as those of the conventional example are given the same numbers and their explanations will be omitted.
１０は電極に巻き付けたヒータ、１１はインピーダンス
測定手段７が作動したかどうか検知するインピーダンス
測定検知手段であり、１２はこのインピーダンス測定検
知手段を構成するトランジスタである。１８はヒータ１
０に通電するヒータ通電手段であり、１４はこのヒータ
通電手段を構成するトランジスタであり、前記トランジ
スタ１２のコレクタを人力にしている。１５はヒータ１
０通電用リレーのコイルである。１６はヒータ１０通電
用リレーの接点であり、１７はヒータ１０のｔ流制限用
の抵抗である。10 is a heater wound around the electrode, 11 is an impedance measurement detection means for detecting whether or not the impedance measurement means 7 is activated, and 12 is a transistor constituting this impedance measurement detection means. 18 is heater 1
14 is a transistor constituting the heater energizing means, and the collector of the transistor 12 is powered manually. 15 is heater 1
This is the coil for the 0 energization relay. 16 is a contact point of a relay for energizing the heater 10, and 17 is a resistor for limiting the t current of the heater 10.
以上のような構成の青果物等の鮮度判定器の動作を以下
に説明するが、ここでも、従来例と同一のものについて
は、説明を省略する。The operation of the freshness determination device for fruits and vegetables, etc. having the above-described configuration will be described below, but here as well, the description of the same components as in the conventional example will be omitted.
まずインピーダンス測定手段７がＯＮの時、すなわち青
果物１のインピーダンスを測定している時には、トラン
ジスタ１２はＯＮとなり、トランジスタ１４はＯＦＦと
なる。このためヒータ１０通電用リレーのコイル１５は
ＯＦＦとなり、リレーの接点１６はＯＦＦとなリヒータ
１０には通電されない。First, when the impedance measuring means 7 is ON, that is, when the impedance of the fruit or vegetable 1 is being measured, the transistor 12 is ON and the transistor 14 is OFF. Therefore, the coil 15 of the relay for energizing the heater 10 is turned off, the contact 16 of the relay is turned off, and the reheater 10 is not energized.
逆に、インピーダンス測定手段７がＯＦＦの時、すなわ
ち電極２ａおよび２ｂが電極板３ａおよび３ｂと接触し
ておらず青果物１のインピーダンスを測定していない時
には、トランジスタ１２は０ＦＦとなり、トランジスタ
１４はＯＮとなる。このためヒータ１０通電用リレーの
コイル１５はＯＮとなり、リレーの接点１６はＯＮとな
るためヒータ１０には電流制限用の抵抗１７を通して所
定の電流が通電されるようになる。Conversely, when the impedance measuring means 7 is OFF, that is, when the electrodes 2a and 2b are not in contact with the electrode plates 3a and 3b and the impedance of the fruit or vegetable 1 is not being measured, the transistor 12 is OFF and the transistor 14 is ON. becomes. Therefore, the coil 15 of the relay for energizing the heater 10 is turned on, and the contact 16 of the relay is turned on, so that a predetermined current is applied to the heater 10 through the current limiting resistor 17.
すなわち、上記実施例の構成によれば、青果物１のイン
ピーダンスを測定していない時には、ヒータ１０に所定
の電流が流れるため電極２ａおよび２ｂは加熱され、以
前の測定時に付着した水分を乾燥させる効果を有してい
る。しかし逆に、青果物１のインピーダンスを測定して
いる時には、ヒータ１０には電流が流れるないため電極
２ａおよび２ｂは加熱されず、インピーダンス測定に影
響を与えないものである。That is, according to the configuration of the above embodiment, when the impedance of the fruit or vegetable 1 is not being measured, a predetermined current flows through the heater 10, so that the electrodes 2a and 2b are heated, which has the effect of drying the moisture that adhered during the previous measurement. have. However, on the contrary, when the impedance of the fruit or vegetable 1 is being measured, since no current flows through the heater 10, the electrodes 2a and 2b are not heated and do not affect the impedance measurement.
発明の効果
以上の実施例から明らかなように、本発明は、青果物等
に接触し交流電圧を印加する電極と、青果物等のインピ
ーダンスを測定するインピーダンス測定手段と、このイ
ンピーダンス測定手段にて測定された値を基に鮮度を判
定する鮮度判定手段と、鮮度を表示する鮮度表示ディス
プレイと、前記電極に巻き付けたヒータと、前記インピ
ーダンス測定手段が作動したかどうか検知するインピー
ダンス測定検知手段と、このインピーダンス測定検知手
段が作動した時、前記ヒータに通電するヒータ通電手段
を備えたものであるため、測定時に電極の先端に付着し
た青果物等の水分を乾燥させることができ、常に真のイ
ンピーダンスが計れるという、優れた効果を有するもの
である。Effects of the Invention As is clear from the above embodiments, the present invention has an electrode that contacts fruits and vegetables and applies an alternating voltage, an impedance measuring means that measures the impedance of the fruits and vegetables, and an impedance that is measured by this impedance measuring means. a freshness determination means for determining freshness based on a value determined by the impedance measurement; Since it is equipped with a heater energizing means that energizes the heater when the measurement detection means is activated, it is possible to dry the moisture in fruits and vegetables that adhere to the tip of the electrode during measurement, and the true impedance can always be measured. , which has excellent effects.
２ａ、２ｂ・・・・・・電極、７・・・・・・インピー
ダンス測定手段、８−・・・・・・鮮度判定手段、９・
・・・・・鮮度表示ディスプレイ、１０・・・・・・ヒ
ータ、１１・・・・・・インピーダンス測定検知手段、
１３・・・・・・ヒータ通電手段。2a, 2b... Electrode, 7... Impedance measuring means, 8-... Freshness determining means, 9.
... Freshness display, 10 ... Heater, 11 ... Impedance measurement detection means,
13...Heater energizing means.
Claims (1)
のインピーダンスを測定するインピーダンス測定手段と
、このインピーダンス測定手段にて測定された値を基に
鮮度を判定する鮮度判定手段と、鮮度を表示する鮮度表
示ディスプレイと、前記電極に巻き付けたヒータと、前
記インピーダンス測定手段が作動したかどうか検知する
インピーダンス測定検知手段と、このインピーダンス測
定検知手段が作動した時、前記ヒータに通電するヒータ
通電手段とを有したことを特徴とする青果物等の鮮度判
定器。An electrode that contacts fruits and vegetables and applies an alternating current voltage, an impedance measuring means that measures the impedance of fruits and vegetables, a freshness determining means that determines freshness based on the value measured by the impedance measuring means, and a freshness display. a freshness display for displaying a freshness display, a heater wound around the electrode, an impedance measurement detection means for detecting whether the impedance measurement means is activated, and a heater energization means for energizing the heater when the impedance measurement detection means is activated. A freshness determination device for fruits and vegetables, etc., characterized by having the following characteristics:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23781389A JPH03100449A (en) | 1989-09-13 | 1989-09-13 | Device for judging freshness of vegetable and fruit or the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23781389A JPH03100449A (en) | 1989-09-13 | 1989-09-13 | Device for judging freshness of vegetable and fruit or the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03100449A true JPH03100449A (en) | 1991-04-25 |
Family
ID=17020789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23781389A Pending JPH03100449A (en) | 1989-09-13 | 1989-09-13 | Device for judging freshness of vegetable and fruit or the like |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03100449A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6657173B2 (en) * | 1998-04-21 | 2003-12-02 | State Board Of Higher Education On Behalf Of Oregon State University | Variable frequency automated capacitive radio frequency (RF) dielectric heating system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS626149A (en) * | 1985-07-03 | 1987-01-13 | Chino Corp | Water droplet sensor |
| JPS63259452A (en) * | 1987-04-16 | 1988-10-26 | Hiroo Kato | Decision on freshness of vegetable based on contact or non-contact |
-
1989
- 1989-09-13 JP JP23781389A patent/JPH03100449A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS626149A (en) * | 1985-07-03 | 1987-01-13 | Chino Corp | Water droplet sensor |
| JPS63259452A (en) * | 1987-04-16 | 1988-10-26 | Hiroo Kato | Decision on freshness of vegetable based on contact or non-contact |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6657173B2 (en) * | 1998-04-21 | 2003-12-02 | State Board Of Higher Education On Behalf Of Oregon State University | Variable frequency automated capacitive radio frequency (RF) dielectric heating system |
| US6784405B2 (en) * | 1998-04-21 | 2004-08-31 | The State Of Oregon, Acting By And Through The State Board Of Higher Education On Behalf Of Oregon State University | Variable frequency automated capacitive radio frequency (RF) dielectric heating system |
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