JP6087358B2 - Rf放射を使用した対象物の処理状態の検知 - Google Patents
Rf放射を使用した対象物の処理状態の検知 Download PDFInfo
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Description
(1) SE=RE+AE+CE
(2a) AE=SE−(RE+CE)
(2b) DE=SE−RE
(2c) DE=AE+CE
(3) DR=AE/SE
式中、SEは、供給源112によって放出側の放射素子110に供給されたエネルギーであり、AEは、例えば、対象物103において吸収されたエネルギーである。SEとAEは両方とも、電力検出器(例えば、検出器118、118a、128または138)によって検出された電力を時間微分することによって計算することができる。t=tiの場合(式中、tiは、エネルギー印加ゾーンにエネルギーが印加される任意の時点であり得る)、方程式(4)は以下の形態を有し得る。
(4) DR=PA/PS;
式中、PAは、吸収された電力であり、PSは、RF源から供給された電力である。PAは、方程式(5)を使用して評価することができる。
(5) PA=PS−Pout;
式中、Poutは、PSがある励起設定でRF源112から放射素子110に供給される際、エネルギー印加ゾーンにおいておよびその周辺において、すべての検出器(例えば、受信側の放射素子として動作する放射素子120および130)によって検出された電力を指し、i番目の検出器ではPdetect(i)と示される。方程式(6)を参照すること。
(6) Pout=ΣPdetect(i)
唯一の利用可能な検出器が放射素子と関連付けられたものである場合(例えば、丁重に、放射素子120および130と関連付けられた検出器128および138)、DRは、検出された3つの電力パラメータPS、PRおよびPCを使用して計算することができ、方程式(6)は、方程式(7)の形態を有し得る。
(7) DR=(PS−PR−PC)/PS
式中、PSは、放出側の放射素子110に供給されたRF電力を表し、PRは、放出側の放射素子110に反射/返却されたEMエネルギーおよび/または電力を表し、PCは、受信素子として機能する他の放射素子(例えば、120および130)と結合されたEMエネルギーを表す。DRは、0〜1の値であり得、したがって、パーセント数値で表すことができる。
(8) DR1=1−(IS11I2−IS12I2+ IS13I2)
式中、DR(ESi)は、i番目の励起設定を使用してRFエネルギーが供給された際に測定された散逸率であり、iは、1〜N(Nは、特定の応用においてエネルギー印加ゾーンへのエネルギーの印加に使用された励起設定の数である)の整数である。平均DRは、経時的に異なり得る。いくつかの実施形態では、演算済みのRFフィードバックは、他のRFフィードバックのES平均、例えば、未処理のRFパラメータ(例えば、反射および透過係数)を含み得る。
(7,8) DR(t)=(PS(t)−PR(t)−PC(t))/PS(t)=1−(IS11(t)I2+IS12(t)I2+IS13(t)I2)
いくつかの実施形態では、平均DRは、対象物の1つまたは複数の処理状態(例えば、対象物の温度、対象物の調理状態など)と相関させることができる。平均DRは、調理の間(例えば、ベーキングの間)、モニタすることができ、対象物の調理状態は、平均DRに基づいて決定することができる。相関は、例えば、演算済みのRFフィードバック(例えば、平均DR)の閾値を含む、装置100と関連付けられたメモリに格納されたルックアップ表を使用し、処理の間にエネルギー印加ゾーンから受信された平均DRを比較することによって行うことができる。
は、方程式(11)を使用して計算することができる。
式中、wiは、DR(ESi)(t)に与えられる重みである。
式中、ΣSEは、放出側の放射素子に供給されたすべてのエネルギー(または電力)の量の和を表し、ΣREは、放出側の放射素子によって受け取られたすべてのエネルギー(または電力)の量の和を表す。反射係数Γは、複数の放出側の放射素子がRFエネルギーを同時に放出する際に使用することができる。
Claims (26)
- RFエネルギーを印加して、対象物(103)の処理の間、空洞(102)に配置された前記対象物の処理状態を検出するための方法において、
処理の間、RFエネルギーを前記対象物に印加するステップと、
前記RFエネルギーの印加に応答してフィードバック信号を受信するステップと、
前記信号を使用して、前記対象物の1つまたは複数の処理状態と相関させた演算済みのフィードバックを得るステップと、
前記処理の間、前記演算済みのフィードバックを反復的にモニタするステップと、
前記対象物の処理状態を検出するために、前記演算済みのフィードバックを、見本の対象物の処理状態と関連付けられた記録されたフィードバックと比較するステップと、
を含み、
前記見本の対象物は処理される対象物を代表し、前記記録されたフィードバックは、前記見本の対象物が処理状態にある際に前記見本の対象物を加熱する間に記録されたものであることを特徴とする方法。 - 請求項1に記載の方法において、コントローラ(150)と関連付けられたメモリから、前記演算済みのフィードバックと前記対象物(103)の前記処理状態との相関を受信するステップを含むことを特徴とする方法。
- 請求項1又は2に記載の方法において、前記対象物(103)と関連付けられた機械可読要素から、前記演算済みのフィードバックと前記対象物の前記処理状態との前記相関を受信するステップを含むことを特徴とする方法。
- 請求項1乃至3の何れか1項に記載の方法において、前記対象物(103)を処理するステップは、前記対象物に熱を印加するステップを含むことを特徴とする方法。
- 請求項4に記載の方法において、熱を印加するステップは、対流加熱、IR加熱、または対流加熱とIR加熱の両方を介して前記対象物(103)を加熱するステップを含むことを特徴とする方法。
- 請求項4又は5に記載の方法において、熱を印加するステップは、前記対象物(103)を加熱するためにRFエネルギーを印加するステップを含むことを特徴とする方法。
- 請求項1乃至6の何れか1項に記載の方法において、前記1つまたは複数の処理状態は、
前記対象物(103)の様相、
前記対象物の物理的特性、
前記対象物の化学的特性、
の少なくとも1つと関連付けることを特徴とする方法。 - 請求項1乃至7の何れか1項に記載の方法において、前記対象物(103)は食品であり、前記1つまたは複数の処理状態は調理状態を含むことを特徴とする方法。
- 請求項1乃至8の何れか1項に記載の方法において、前記対象物(103)の前記1つまたは複数の検出処理状態に基づいて、前記対象物の前記処理を制御するステップを含むことを特徴とする方法。
- 請求項1乃至9の何れか1項に記載の方法において、前記フィードバック信号は、前記対象物(103)によるEMエネルギー吸収を示すことを特徴とする方法。
- 請求項1乃至10の何れか1項に記載の方法において、前記1つまたは複数の処理状態が目標値に達した際に、前記対象物(103)の前記処理を終了するステップを含むことを特徴とする方法。
- 請求項1に記載の方法において、前記対象物(103)の処理状態が、前記対象物の初期状態に対応することを特徴とする方法。
- 少なくとも1つの放射素子を介して、RFエネルギーを印加して、対象物(103)の処理の間、空洞(102)に配置された前記対象物の処理状態を検出するための装置において、
RFフィードバックを生成するためにRFエネルギーを前記対象物に印加するよう構成されたRFエネルギー印加ユニット(119)と、
コントローラ(150)において、
前記RFエネルギー印加ユニットによってRFエネルギー印加を引き起こし、
前記RFエネルギーの印加に応答してフィードバック信号を受信し、
前記信号を使用して、前記対象物の1つまたは複数の処理状態と相関させた演算済みのフィードバックを得て、
前記処理の間、前記演算済みのフィードバックを反復的にモニタし、
前記対象物の処理状態を検出するために、前記演算済みのフィードバックを、見本の対象物の処理状態と関連付けられた記録されたフィードバックと反復的に比較する
よう構成された、コントローラと、
を備えており、
前記見本の対象物は処理される対象物を代表し、前記記録されたフィードバックは、前記見本の対象物が処理状態にある際に前記見本の対象物を加熱する間に記録されたものであることを特徴とする装置。 - 請求項13に記載の装置において、前記コントローラ(150)は、前記対象物(103)を処理するためにエネルギーの印加を引き起こすようさらに構成されることを特徴とする装置。
- 請求項13又は14に記載の装置において、前記コントローラ(150)は、前記処理の間、前記対象物へのRFエネルギーの印加を引き起こすよう構成されることを特徴とする装置。
- 請求項13乃至15の何れか1項に記載の装置において、前記フィードバック信号を検出するよう構成された検出器(118)をさらに備えており、
前記検出器は、前記エネルギー印加ユニット(119)に含まれる放射素子(110、111)に関連付けられることを特徴とする装置。 - 請求項13乃至16の何れか1項に記載の装置において、前記対象物(103)を処理するために熱を印加する熱源(209、209a、209b)を備えることを特徴とする装置。
- 請求項17に記載の装置において、前記熱源(209、209a、209b)は、対流加熱源、IRランプ、または対流加熱源とIRランプの両方を含むことを特徴とする装置。
- 請求項17に記載の装置において、前記熱源は、RF源(112)を含むことを特徴とする装置。
- 請求項13乃至19の何れか1項に記載の装置において、前記コントローラ(150)は、前記検出処理状態に基づいて、前記処理を制御するよう構成されることを特徴とする装置。
- 請求項1に記載の方法において、前記対象物の1つまたは複数の処理状態と相関させた演算済みのフィードバックは、直接測定可能なパラメータまたは演算済みのパラメータの平均であることを特徴とする方法。
- 請求項21に記載の方法において、前記平均は、時間平均であることを特徴とする方法。
- 請求項22に記載の方法において、前記平均は、励起設定平均であることを特徴とする方法。
- 請求項13に記載の装置において、前記処理の間にモニタされる前記演算済みのフィードバックは、直接測定可能なパラメータまたは演算済みのパラメータの平均であることを特徴とする装置。
- 請求項24に記載の装置において、前記平均は、励起設定平均であることを特徴とする装置。
- 請求項25に記載の装置において、前記平均は、励起設定平均であることを特徴とする装置。
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- 2012-08-30 US US13/599,472 patent/US20130080098A1/en not_active Abandoned
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- 2012-08-30 CN CN201610086623.4A patent/CN105722263B/zh active Active
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- 2012-08-30 WO PCT/US2012/053044 patent/WO2013033330A2/en active Application Filing
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JP2014529871A (ja) | 2014-11-13 |
CN105722263B (zh) | 2019-02-19 |
CN103843456B (zh) | 2016-03-02 |
CN103843456A (zh) | 2014-06-04 |
EP3503680B1 (en) | 2022-01-19 |
US20130080098A1 (en) | 2013-03-28 |
US20210302331A1 (en) | 2021-09-30 |
US11009468B2 (en) | 2021-05-18 |
US10088436B2 (en) | 2018-10-02 |
KR20140058646A (ko) | 2014-05-14 |
US20180372656A1 (en) | 2018-12-27 |
EP2752086B1 (en) | 2019-01-09 |
CN105722263A (zh) | 2016-06-29 |
WO2013033330A2 (en) | 2013-03-07 |
WO2013033330A3 (en) | 2013-04-25 |
EP2752086A2 (en) | 2014-07-09 |
EP2752086B2 (en) | 2021-12-08 |
US20140247060A1 (en) | 2014-09-04 |
EP3503680A1 (en) | 2019-06-26 |
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