JPH0759225B2 - rice cooker - Google Patents
rice cookerInfo
- Publication number
- JPH0759225B2 JPH0759225B2 JP2174726A JP17472690A JPH0759225B2 JP H0759225 B2 JPH0759225 B2 JP H0759225B2 JP 2174726 A JP2174726 A JP 2174726A JP 17472690 A JP17472690 A JP 17472690A JP H0759225 B2 JPH0759225 B2 JP H0759225B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- energization ratio
- ratio
- energization
- fuzzy
- 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.)
- Expired - Lifetime
Links
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、一般家庭で使用される炊飯器に関するもので
ある。TECHNICAL FIELD The present invention relates to a rice cooker used in general households.
従来の技術 従来の炊飯器における加熱手段への通電比率決定方法の
一例を以下に述べる。2. Description of the Related Art An example of a method for determining the energization ratio of the heating means in a conventional rice cooker will be described below.
近年はマイコンを用いた炊飯器が市場で主流となってい
る。この炊飯器では、米に吸水させるための前炊き工程
が終了し、いわゆる炊き上げ工程にはいると加熱手段へ
の通電比率を100％として急激に加熱し、被加熱物の温
度上昇具合（あらかじめ決められた２点の温度間を通過
する時間ｔ）によってその後の通電比率αを決定してい
た。この時のαの決定は、 α＝ａ×ｔ＋ｂ ……（１） という線形式に基づいて行われていた。In recent years, rice cookers using microcomputers have become the mainstream in the market. In this rice cooker, the pre-cooking process for making the rice absorb water is completed, and when entering the so-called cooking process, the heating means is heated rapidly with the energization ratio to 100%, and the temperature rise of the heated object The subsequent energization ratio α was determined by the time t) during which the temperature passed between the two determined temperatures. The determination of α at this time was performed based on the linear form of α = a × t + b (1).
発明が解決しようとする課題 しかし前記（１）式は理想的なモデルの場合で、現実に
は温度検出素子の特性や、温度検出素子の熱受感構成に
より（１）式のようにリニアな関係にはならない。即
ち、（１）式に基づいて決定される通電比率は最適なも
のではないという課題があった。However, the above equation (1) is an ideal model, and is actually linear as shown in equation (1) due to the characteristics of the temperature detecting element and the heat-sensitive configuration of the temperature detecting element. Not a relationship. That is, there is a problem that the energization ratio determined based on the formula (1) is not optimal.
そこで本発は、このような従来の課題を解決しようとす
るものであって、加熱手段の通電比率をファジィ推論に
より決定し、最適な炊飯をする炊飯器を提供することを
目的としている。Therefore, the present invention is intended to solve such a conventional problem, and an object thereof is to provide a rice cooker that determines the energization ratio of the heating means by fuzzy reasoning and optimally cooks rice.
課題を解決するための手段 前記目的を達成するために本発明は、加熱手段と、この
加熱手段の通電比率を制御するトライアック等のスイッ
チング素子と、被調理物の温度を検出するサーミスタ等
の２つの温度検出素子と、この第１の温度検出素子によ
り所定の第１の温度が検出されてから第２の温度検出素
子により所定の第２の温度が検出されるまでの時間tHに
より前記スイッチング素子への通電比率を決定するファ
ジィ推論器と、このファジィ推論器により決定された通
電比率に応じて前記スイッチング素子を駆動する駆動装
置とを備え、前記ファジィ推論器は、前記tHと複数個の
メンバーシップ関数を記憶しているtHメンバーシップ関
数記憶手段との出力を入力しtHの前件部適合度を演算す
るtH適合度演算手段と、tHとtH適合度演算手段の出力を
入力とし記憶されたルールに従って演算を行う通電比率
推論ルール記憶手段と、この通電比率推論ルール記憶手
段の出力を演算し通電比率を決定する重心演算手段とで
構成されている。Means for Solving the Problems In order to achieve the above object, the present invention provides a heating means, a switching element such as a triac for controlling the energization ratio of the heating means, and a thermistor for detecting the temperature of an object to be cooked. The two temperature detection elements and the switching time t H from the detection of the predetermined first temperature by the first temperature detection element to the detection of the predetermined second temperature by the second temperature detection element a fuzzy inference unit for determining the current ratio of the device, and a driving device for driving the switching element in response to energization ratio determined by the fuzzy inference unit, the fuzzy inference unit, the t H and a plurality t H membership function and t H fitness calculation means for calculating a antecedent adaptation degree of input t H an output of the storage means, t H and t H fitness calculation means for storing membership functions It is composed of an energization ratio inference rule storage means for performing an operation in accordance with the stored rule by using the output of 1 as an input, and a center of gravity operation means for calculating an output of the energization ratio inference rule storage means to determine an energization ratio.
作用 上記構成により、異なった位置（例えば、鍋底と蓋等）
に取り付けられた２つの温度検出素子による２点間の温
度が検出される間の時間によってその後の加熱手段の最
適な通電比率をファジィ推論器が決定し、この決定され
た通電比率に応じて駆動装置がスイッチング素子を駆動
し炊飯を行う訳である。Action Due to the above configuration, different positions (eg pan bottom and lid etc.)
The fuzzy inference unit determines the optimum energization ratio of the heating means thereafter according to the time during which the temperature between the two points is detected by the two temperature detection elements attached to the fuzzy reasoner, and the fuzzy reasoner drives according to the determined energization ratio. The device drives the switching element to cook rice.
その結果、２つの温度検出素子が異なった位置（例え
ば、鍋底と蓋等）に取り付けられているため、２点間の
温度が検出される間の時間が精度良く測定できると共
に、人間が経験的に知っている炊飯のノウハウをファジ
ィ推論器に持たせることにより、前記炊飯を最適なもの
にすることができる訳である。As a result, since the two temperature detecting elements are attached at different positions (for example, the bottom of the pan and the lid), the time during which the temperature between the two points is detected can be measured accurately, and the human experience By providing the fuzzy inference device with the know-how of cooking rice known to, the above-mentioned cooking rice can be optimized.
実施例 以下、本発明の一実施例の炊飯器について第１図から第
３図を用いて説明する。Example Hereinafter, a rice cooker according to an example of the present invention will be described with reference to FIGS. 1 to 3.
第１図は本発明の一実施例の炊飯器の要部ブロック図で
ある。図において、１は鍋で、被加熱物（米・水）を収
容する。２は内蓋で、鍋１を蓋する。３は加熱手段で、
鍋１を加熱し、被加熱物を調理する。４はスイッチング
素子で、加熱手段３への通電を制御する。５は第１の温
度検出素子で、鍋１の温度を検出する。６は第２の温度
検出素子で、内蓋２の温度を検出する。７はファジィ推
論器で、第1,第２の温度検出素子5,6からの出力を入力
とし、その後の加熱手段３の通電比率を決定する。８は
駆動回路で、ファジィ推論器によって決定された通電比
率でスイッチング素子４を制御する。FIG. 1 is a block diagram of essential parts of a rice cooker according to an embodiment of the present invention. In the figure, reference numeral 1 is a pot for accommodating an object to be heated (rice, water). 2 is an inner lid, which covers the pot 1. 3 is a heating means,
The pan 1 is heated to cook the object to be heated. Reference numeral 4 is a switching element, which controls energization to the heating means 3. A first temperature detecting element 5 detects the temperature of the pot 1. A second temperature detecting element 6 detects the temperature of the inner lid 2. A fuzzy reasoner 7 receives the outputs from the first and second temperature detecting elements 5 and 6, and determines the energization ratio of the heating means 3 thereafter. Reference numeral 8 is a drive circuit, which controls the switching element 4 at the energization ratio determined by the fuzzy reasoner.
次に実際の温度検知について、第２図を用いて説明す
る。第２図は炊飯中の時間経過に対する被加熱物の温度
上昇を示す図である。実線は鍋１の温度上昇を示し、一
点鎖線は内蓋２の温度上昇を示す。本実施例において
は、鍋１の温度がT1になってから、内鍋２の温度がT2に
なるまでの時間tHを測定して、これを元にその後の通電
比率を決定している訳である。Next, actual temperature detection will be described with reference to FIG. FIG. 2 is a diagram showing the temperature rise of the object to be heated with the passage of time during rice cooking. The solid line shows the temperature rise of the pot 1, and the alternate long and short dash line shows the temperature rise of the inner lid 2. In this embodiment, the time t H from when the temperature of the pot 1 becomes T1 to when the temperature of the inner pot 2 becomes T2 is measured, and the subsequent energization ratio is determined based on this time. Is.
次に実際の通電比率の決定を、ファジィ推論器２の構成
を示す第３図で説明する。11はtH適合度演算手段で、tH
とtHメンバーシップ関数記憶手段12の出力を入力し、tH
の前件部適合度を演算している。tHメンバーシップ関数
記憶手段12には複数個のメンバーシップ関数が記憶され
ている訳である。次に13は通電比率推論ルール演算手段
で、tHとtH適合度演算手段11の出力を入力とし通電比率
推論ルール記憶手段14に記憶されたルールに従って演算
を行う。通電比率推論ルール記憶手段14には複数個の推
論ルールが記憶されている訳である。この通電比率推論
ルール演算手段13の出力を15の重心演算手段で演算し通
電比率が決定される訳である。Next, the determination of the actual energization ratio will be described with reference to FIG. 3 showing the configuration of the fuzzy reasoner 2. 11 is a t H fitness calculation means, t H
And the output of the t H membership function storage means 12 are input, and t H
Is calculated for the antecedent degree of conformity. That is, the t H membership function storage means 12 stores a plurality of membership functions. Next, 13 is an energization ratio inference rule calculation means, which receives the outputs of t H and t H conformance calculation means 11 as input and performs an operation in accordance with the rules stored in the energization ratio inference rule storage means 14. That is, the energization ratio inference rule storage means 14 stores a plurality of inference rules. This means that the output of the energization ratio inference rule operation means 13 is operated by the 15 gravity center operation means to determine the energization ratio.
たとえばそれぞれの記憶手段に記憶されているメンバー
シップ関数・ルールが２個の場合で考えてみると、tHに
応じてtH適合度演算手段11で演算結果M1,M2（適合度）
が得られ、次にtH及びM1,M2により通電比率推論ルール
演算手段13でP1,P2（通電比率仮値）が演算され、最後
に重心演算手段15でこのP1,P2から最終の通電比率αが
演算される訳である。For example, membership functions, rules stored in the respective storage means consider the case of two, the operation result M1 in t H adaptation calculating means 11 according to t H, M2 (goodness of fit)
Then, the energization ratio inference rule computing means 13 computes P1, P2 (tentative energization ratio values) by t H and M1, M2, and finally the center of gravity computing means 15 calculates the final energization ratio from P1, P2. That is, α is calculated.
このようにしてファジィ推論器によって演算すること
で、最適な通電比率αが得られ、最適な炊飯ができる訳
である。In this way, by calculating with the fuzzy reasoner, the optimum energization ratio α can be obtained, and the optimum rice can be cooked.
尚、本実施例では、２つの温度検出素子を鍋と内蓋に設
けた場合を示しているが、例えば鍋底と鍋側面等に設け
ても、本実施例の効果は何等変わるところはない。In this embodiment, two temperature detecting elements are provided on the pan and the inner lid. However, even if they are provided on the pan bottom and the side surface of the pan, the effect of this embodiment does not change.
発明の効果 以上説明したように本発明によると、被加熱物の温度上
昇具合によりファジィ推論を用いて加熱手段の通電比率
を決定するので、きめの細かい火加減のコントロールが
できる訳であり、人間が経験的に知っている炊飯のノウ
ハウを持った炊飯器を実現できる訳である。特に、温度
検出素子を２つ設けているので、２点間による温度検出
による精度のよい炊飯量検知ができ、この炊飯量にもと
づく加熱出力のファジィ制御の精度も高めることができ
る。EFFECTS OF THE INVENTION As described above, according to the present invention, the energization ratio of the heating means is determined by using fuzzy reasoning depending on the temperature rise of the object to be heated, so that it is possible to finely control the heating adjustment. Can realize a rice cooker with experience of knowing rice cooking. In particular, since two temperature detecting elements are provided, the amount of cooked rice can be accurately detected by detecting the temperature between two points, and the accuracy of fuzzy control of the heating output based on this amount of cooked rice can be increased.
第１図は本発明の一実施例を示すブロック図、第２図は
同炊飯過程における温度変化を示す図、第３図はファジ
ィ推論器の構成を示すブロック図である。 １……鍋、２……内蓋、３……加熱手段、４……スイッ
チング素子、５……第１の温度検出素子、６……第２の
温度検出素子、７……ファジィ推論器、８……駆動装
置。FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing temperature changes in the rice cooking process, and FIG. 3 is a block diagram showing a configuration of a fuzzy reasoner. 1 ... pan, 2 ... inner lid, 3 ... heating means, 4 ... switching element, 5 ... first temperature detecting element, 6 ... second temperature detecting element, 7 ... fuzzy reasoner, 8 ... Drive device.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 原 由美子 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (56)参考文献 特開 昭62−155814（ＪＰ，Ａ) 特開 平２−44126（ＪＰ，Ａ) 特開 平４−58912（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yumiko Hara, 1006, Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) Reference JP 62-155814 (JP, A) JP 2-44126 (JP, A) JP-A-4-58912 (JP, A)
Claims (1)
御するトライアック等のスイッチング素子と、被調理物
の温度を検出するサーミスタ等の２つの温度検出素子
と、この第１の温度検出素子により所定の第１の温度が
検出されてから第２の温度検出素子により所定の第２の
温度が検出されるまでの時間tHにより前記スイッチング
素子への通電比率を決定するファジィ推論器と、このフ
ァジィ推論器により決定された通電比率に応じて前記ス
イッチング素子を駆動する駆動装置とを備え、前記ファ
ジィ推論器は、前記tHと複数個のメンバーシップ関数を
記憶しているtHメンバーシップ関数記憶手段との出力を
入力しtHの前件部適合度を演算するtH適合度演算手段
と、tHとtH適合度演算手段の出力を入力とし記憶された
ルールに従って演算を行う通電比率推論ルール記憶手段
と、この通電比率推論ルール記憶手段の出力を演算し通
電比率を決定する重心演算手段とで構成した炊飯器。1. A heating means, a switching element such as a triac for controlling the energization ratio of the heating means, two temperature detecting elements such as a thermistor for detecting the temperature of an object to be cooked, and the first temperature detecting element. A fuzzy inference unit for determining the energization ratio to the switching element by the time t H from the detection of the predetermined first temperature by the second temperature detection element to the detection of the predetermined second temperature by the second temperature detection element, A driving device for driving the switching element according to the energization ratio determined by the fuzzy reasoner, wherein the fuzzy reasoner stores the t H and a plurality of membership functions t H membership and t H fitness calculation means for calculating a antecedent adaptation degree of input t H output of the function storage means, the operation in accordance with an input the output of t H and t H fit calculating means stored rules Cormorant energizing ratio inference rule storage means, cooker constituted by the center-of-gravity calculating means for determining the calculated power ratio the output of the power energization percentage inference rule storage means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2174726A JPH0759225B2 (en) | 1990-07-02 | 1990-07-02 | rice cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2174726A JPH0759225B2 (en) | 1990-07-02 | 1990-07-02 | rice cooker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0461819A JPH0461819A (en) | 1992-02-27 |
| JPH0759225B2 true JPH0759225B2 (en) | 1995-06-28 |
Family
ID=15983585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2174726A Expired - Lifetime JPH0759225B2 (en) | 1990-07-02 | 1990-07-02 | rice cooker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0759225B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5617856A (en) * | 1993-09-24 | 1997-04-08 | Osaka Gas Company Limited | Biological information-measuring apparatus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62155814A (en) * | 1985-12-27 | 1987-07-10 | 松下電器産業株式会社 | Rice cooker |
| JP2548320B2 (en) * | 1988-08-03 | 1996-10-30 | 松下電器産業株式会社 | microwave |
| JP2895926B2 (en) * | 1990-06-28 | 1999-05-31 | 三洋電機株式会社 | Electric cooker |
-
1990
- 1990-07-02 JP JP2174726A patent/JPH0759225B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0461819A (en) | 1992-02-27 |
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