JP3736720B2 - Ladies thermometer - Google Patents

Description

とする。ただし、可能期間は、平均月経周期の計算に使用した月経周期の分布を正規分布として１．５σ相当／２とする。なお、可能期間は日単位、小数点第１位で四捨五入とする。
・本計算処理を行っている当日が高温相（後述の相判定により判定）の場合

とする。ただし、可能期間は、平均高温相期間の計算に使用した高温相期間の分布を正規分布として１．５σ相当／２とする。なお、可能期間は日単位、小数点第１位で四捨五入とする。
【００３５】
このようにして推定された次回生理日を表示する際には、表示当日の条件に応じて次のように表示制御される。
・表示当日が次回生理日の期間に含まれない場合、計算された次回生理日をそのまま表示する。
・表示当日が計算された次回生理日の期間に入っており、その期間の最後の日から所定日数前、例えば３日前までの場合、表示される期間は、表示当日の日付〜次回生理日の期間の最後の日とする。すなわち、表示当日〜最近の生理初日＋平均月経周期＋可能期間、あるいは表示当日の日付〜最近の排卵日＋平均高温相期間＋可能期間となる。
・表示当日が次回生理日の最終日−３日以降の場合、生理初日まで、表示は、表示当日の日付〜表示当日の日付＋３日とする。
・計算の結果、次回生理日が所定日数、例えば８日間以上の期間にわたる場合、表示は「−−月−−日〜−−月−−日」とする。
・表示当日が高温相で、排卵日からの日数が所定日数、例えば１７日以上の場合、表示は「−−月−−日〜−−月−−日」とする。
・平均月経周期または平均高温相期間が確定していない場合、表示は「−−月−−日〜−−月−−日」とする。
【００３６】
（７）基準体温（非表示）
図４において、符号▲１▼〜▲８▼は生理初日、◎は排卵日、区間Ａ〜Ｇは高温相期間、区間Ｈ〜Ｎは低温相期間、区間ｂ〜ｈは月経周期である。基準体温は生理初日確定後に計算され、以降次回生理初日が確定するまで保持される。
・基準体温は、

として求められる。ただし、高温相平均体温および低温相平均体温は後述の平均体温により得られる。
【００３７】
例えば、生理初日▲４▼における基準体温は、

である。
【００３８】
また、生理初日▲１▼においては基準体温は更新されない。
【００３９】
生理初日▲２▼においては、
基準体温＝(区間Ａの平均体温＋区間Ｈの平均体温)/2
生理初日▲３▼においては、

である。
・区間ａ〜ｂにおける基準体温は、基準体温＝３６．５℃として予め与えられる。
【００４０】
（８）平均体温（非表示）
平均体温としては、高温相平均体温と低温相平均体温のそれぞれを、初回の生理初日確定以降計算する。
・高温相平均体温は、高温相開始から所定日目、例えば３日目の体温を初期値として、低温相開始の所定日前、例えば３日前までの体温で平均体温を計算する。
・低温相平均体温は、低温相開始から所定日目、例えば３日目の体温を初期値として、高温相開始の所定日前、例えば３日前までの体温で平均体温を計算する。
【００４１】
（９）相判定（非表示）
測定当日の相を判定する。
・当日体温≧基準体温の場合、高体温とする。
・当日体温＜基準体温の場合、低体温とする。
・相判定は記録開始から最初に低温相が確認されてから所定日毎、例えば１日毎に判定する。
・当日で低体温が所定日数、例えば３日連続した場合は当日から所定日数、例えば２日遡って低温相開始とする。または生理初日が確定した時点で、生理開始日から低温相開始とする。
・当日で高体温が所定日数、例えば３日連続した場合は当日から所定日数、例えば２日遡って高温相開始とする。ただし、連続した所定日数内、例えば３日内に発熱メモ入力がある場合または体温が３７．５℃以上の場合は、その測定結果は計算から除外する。
【００４２】
（１０）排卵日検出（非表示）
・排卵日は、相判定において高温相の開始日が更新された後に計算する。
・排卵日は低温相の最後の日なので、相判定後下式で求められる。
【００４３】
排卵日＝高温相開始日−１
（１１）次回排卵日予定（表示）
次回排卵日は、所定回数目、例えば４回目の生理初日が確定した以降、平均月経周期、平均低温相期間の計算の終了後に計算（推）する。なお区間ａ〜ｄにおいては計算できないために「−−月−−日〜−−月−−日」とする。
・次回排卵日は所定期間、例えば３〜７日間の期間（××月××日〜××月××日）として表示する。
・当日が低温相の場合、

とする。ただし、可能期間は、平均低温相期間の計算に使用した低温相期間の分布を正規分布として１．５σ相当／２とする。なお、可能期間は日単位、小数点第１位で四捨五入である。
・当日が高温相の場合、

とする。ただし、可能期間は、平均月経周期の計算に使用した月経周期の分布を正規分布として１．５σ相当／２とする。なお、可能期間は日単位、小数点第１位で四捨五入である。
【００４４】
このようにして推定された次回排卵日を表示する際には、表示当日の条件に応じて次のように表示制御される。
・表示当日が次回排卵日の期間に含まれない場合、計算された次回排卵日をそのまま表示する。
・当日が計算された次回排卵日の期間に入っており、その期間の最後の日から所定日前、例えば３日前までの場合、表示される期間は、表示当日の日付〜次回排卵日の期間の最後の日とする。すなわち、表示当日〜最近の生理初日＋平均低温相期間＋可能期間、あるいは表示当日の日付〜最近の排卵日＋平均月経周期＋可能期間となる。
・表示当日が次回排卵日の最終日−３日以降の場合、排卵日まで、表示は、表示当日の日付〜表示当日の日付＋３日とする。
・計算の結果、次回排卵日が所定日数、例えば８日間以上の場合、表示は「−−月−−日〜−−月−−日」とする。
・当日が高温相で、排卵からの日数が所定日数、例えば１７日以上の場合、表示は「−−月−−日〜−−月−−日」とする。
・平均月経周期または平均低温相期間が確定していない場合、表示は「−−月−−日〜−−月−−日」とする。
【００４５】
（１２）出産予定日予測（表示）
最後の排卵日からの日数が所定日数、例えば２０日をこえ、当日（最新測定体温）が高体温の場合、下式で推定する。
【００４６】
出産予定日＝排卵日＋２６５日
・出産予定日が求められていない場合、その表示は「−−月−−日〜−−月−−日」とする。
【００４７】
（１３）測定体温の欠落データ（取り忘れ）後処理
基礎体温は原則として毎日測定されるべきものであるが、もし測定し忘れなどでデータが欠落している場合には、内部データとして、欠落日前後の測定体温から計算で求める。ただし、欠落したデータの表示は行わない、欠落日の体温表示は「−−．−−℃」となる。欠落したデータは、欠落の直前の測定値と直後の測定値とを、線形に補間するように補填される。すなわち、次の例のようになる。
・測定体温データ欠落が１日分（第Ｎ日）の場合、第Ｎ−１日の測定値がａ、第Ｎ＋１日の測定値がｂとすれば、

・測定体温データ欠落が２日分（第Ｎ日、第Ｎ＋１日）の場合、

・同様に測定体温データの欠落がｍ日にわたる場合、欠落前日体温をａ、欠落後の体温をｂとして
欠落ｎ日目の体温＝ａ＋ｎ（ｂ−ａ）／（ｍ＋１）
測定体温欠落データの連続日数ｍは所定日数、例えば８日まで許容する。その所定日数、例えば８日をこえる欠落があった場合、最近の生理日に遡り、体温データを無効とする。
・測定体温の有効データが、月経周期内の日数の所定比率以上、例えば５０％以上の場合、その月経周期内のデータを有効とする。所定比率未満、例えば５０％未満の場合、その月経周期内のデータを無効とする。
【００４８】
＜データ処理の手順＞
以上、個々の項目ごとに処理の内容を説明したが、図５〜図９により、一連の処理としてデータ処理手順を説明する。図５は処理全体の流れを示すフローチャートであり、図１におけるＣＰＵ４１によりＲＯＭ４３に格納されたプログラムを実行することで実現される。以下、フローチャートを参照しつつ、処理の内容について説明する。なお、図６〜図９は、上述した各処理の一部の内容をフローチャート化したものであるので、簡単に触れるにとどめる。
【００４９】
図５において、まず本日の体温測定が既に済んでいるか判定する（ステップＳ５０１）。済んでいれば処理は終了する。済んでいなければ、まず欠落データを補間する（ステップＳ５０１）。すなわち、所定日数、例えば８日以上欠落があれば、最近の生理初日以降のデータを無効化し、所定日数以下、例えば７日以下であれば、ｎ日欠落したｍ日目のデータを（ａ＋ｎ（ｂ−ａ）／（ｍ＋１））の式により補間する。これは上述した項目（１３）に説明した通りである。
【００５０】
次に、生理初日を判定する（ステップＳ５０３）。この詳細は前述した項目（２）の通りであるが、改めて図６に示した。すなわち、生理メモ入力が所定日以上、例えば３日以上連続したならその初日、すなわち当日の所定日前、例えば２日前の日付で生理初日を更新する（ステップＳ８０３）。また、ステップＳ５１０９で低温相の開始日が更新されると、ステップＳ５０３に戻って、その低温相開始日で生理初日を更新する（ステップＳ８０８）。また、ステップＳ８０８で生理初日が更新された場合には、高温相になる前に生理メモが入力された日付けで生理初日を更新する（ステップＳ８０６）。生理初日はこれら３つのいずれかをきっかけとして更新される。
【００５１】
次に、直前の月経周期が確定したならば、すなわち、あらたな生理初日が確認されてから初めての処理であり、かつ、直前の月経周期のデータが有効であれば、平均月経周期の計算（ステップＳ５０６）、平均高温相期間および平均低温相期間の計算（ステップＳ５０７）、基準体温の計算（ステップＳ５０８）を行う。これら３つの値は、上述した項目（３）〜（５）および（７）に説明した要領で算出される。
【００５２】
ステップＳ５０６−Ｓ５０８は、１回の月経周期で１回行われる処理である。これに対して、ステップＳ５０９−Ｓ５１４は毎日体温が測定されるごとに実行される。
【００５３】
まず、相判定並びに排卵日の検出が行われる（ステップＳ５１０）。その詳細は、上述した項目（９）および（１０）で説明した通りであるが、改めて図７に示す。すなわち、原則的には所定日間、例えば３日間連続して低体温あるいは高体温であれば、その初日をそれぞれ低温相あるいは高温相の開始日とする（ステップＳ１１０３，Ｓ１１０６）。ただし、所定日間、例えば３日連続低体温でなくとも、生理初日がその日に更新されていれば、更新された生理初日を低温相の開始日とする（ステップＳ１１０８，Ｓ１１０９）。また、所定温度を越えている場合あるいは発熱メモが入力された場合には、その日の測定値は採用しない。また、高温相開始日の前日をその月経周期における排卵日とする（ステップＳ１１０７）。
【００５４】
ステップＳ５０９において相判定が行われると、本日づけで低温相開始日が更新され、かつ、生理初日が更新されていないことを、ステップＳ５１０において判定する。この結果が肯定判定であれば、生理初日を低温相開始日で更新する必要があるため、ステップＳ５０３に戻り生理初日の更新を改めて行う。それにともなって、生理初日が新たに判定されて、その直前の月経周期に関するデータ処理がステップＳ５０４−Ｓ５０８で行われることになる。
【００５５】
これ以降は、平均体温計算（ステップＳ５１１）、次回生理日予測（推定）計算（ステップＳ５１２）、次回排卵日予測（推定）計算（ステップＳ５１３）、出産予定日予測（推定）計算（ステップＳ５１４）を順次行って、データ処理モードにおける処理を終了する。
【００５６】
平均体温は、項目（８）で説明した通り、高温相・低温相の交代が確認された時点で、直前の相の開始日から所定日目、例えば３日目から今回の相の開始日の所定日前、例えば３日前までの体温の平均を求める。
【００５７】
次回生理日は、図８（Ａ）のように、現在高温相であれば最後の排卵日を基準にして平均高温相期間を加え、その日を中心としてばらつきを加味して予測（推定）する（ステップＳ１３０５）。また、現在低温相であれば最後の生理初日を基準にして平均月経周期を加え、その日を中心としてばらつきを加味して予測（推定）する（ステップＳ１３０３）。これは、項目（６），（１１），（１２）において説明した通りである。
【００５８】
次回排卵日は、図８（Ｂ）のように、現在高温相であれば最後の排卵日を基準にして平均月経周期を加え、その日を中心としてばらつきを加味して予測（推定）する（ステップＳ１４０４）。また、現在低温相であれば最後の生理初日を基準にして平均低温相期間を加え、その日を中心としてばらつきを加味して予測する（ステップＳ１４０６）。
【００５９】
出産予定日は、図９のように、最後の排卵日から所定日以上、例えば２０日以上経過して、しかも高温相である場合に、最後の排卵日から２６５日目を出産予定日として求める（ステップＳ１５０３）。
【００６０】
測定された体温や上述のようにして計算された値は全てＲＡＭ４２１に格納され、２４０日間にわたって保存される。すなわち、例えば月経周期や高温相期間，低温相期間，平均体温等、月経周期の１周期毎に算出される値であれば、おおよそ６〜１０周期分程度が保存される。このため、平均高温相期間や平均低温相期間等、その前の多くの月経周期におけるデータに基づいて得られる値を算出するためにも、十分なデータを保存しておくことができる。
【００６１】
上述した構成および処理手順により、測定された基礎体温および生理メモや発熱メモなどの生理事項から得られた、生理初日や平均月経周期、排卵日や平均高温相周期・平均低温相周期といった生理的な周期を基に、現在の相（低温相あるいは高温相）に応じて、次回生理日あるいは次回排卵日を予測する。この際、生理初日の判定を、単に生理メモの入力のみならず低温相の開始日に基づいても行うために、仮に生理メモの入力がなくとも正確に生理初日を判定できる。このため、より精度の高い生理日や排卵日の予測が可能となる。
【００６２】
さらに、３日連続して高体温の場合にはじめてその初日を高温相の初日と判定するため、低温相の最終日が排卵日であるとの判定が高精度に行える。また、高温相の開始日の精度が高くなることにより、高温相周期を用いたりあるいは現在の相に応じたデータ処理の精度が高くなる。
【００６３】
さらに、欠落した基礎体温データを、欠落期間の前後で実測された値を線形に補間するように推定するため、欠落した期間が高温相と低温相との境界を含んでいる場合であっても、相の境界を、その誤差の最大値が最小となる様に推定することができる。
【００６４】
さらに、基礎体温データから得られる生理的な諸周期を使用する際に、有効な値であるための条件を設定し、それに適合する値に限って使用するために、信頼できる値だけを使用して、各種の値を算出できる。
【００６５】
【発明の効果】
以上説明したように、本発明に係る婦人体温計は、基礎体温や入力された生理事項を基にして、高温相の開始日の前日を排卵日と判定し、最後の排卵日から２０日以上経過してなお高温相にあるならば、最後の排卵日から２６５日数後を出産予定日と推定する。このように、低温相の最終日を排卵日を基準として予測するために、入力された生理事項や測定された基礎体温から、高精度で出産予定日を推定できる。
【００６６】
【図面の簡単な説明】
【図１】婦人体温計のブロック図である。
【図２】婦人体温計本体の外観図である。
【図３】婦人体温計の処理モードの遷移を表す状態遷移図である。
【図４】女性の生理的な周期の一例を示す図である。
【図５】本発明にかかる婦人体温計によるデータ処理手順のフローチャートである。
【図６】生理初日を判定する手順のフローチャートである。
【図７】相判定および排卵日検出の手順のフローチャートである。
【図８】次回生理日および次回排卵日を予測する手順のフローチャートである。
【図９】出産予定日を予測する手順のフローチャートである。
【符号の説明】[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a female thermometer for a woman to measure a basal body temperature.
[0002]
[Prior art]
A woman's basal body temperature periodically has two phases, a high temperature phase and a low temperature phase, and a female thermometer is used to measure the basal body temperature. By recording a basal body temperature daily with a female thermometer and creating a trend graph, the measurer can know the cycle of the high temperature phase and the low temperature phase. In order to accurately record basal body temperature trends, digital female thermometers are also used to eliminate reading errors by the measurer. The digital female thermometer is not limited to simply measuring the body temperature, it also records the measured body temperature and creates a trend graph itself, and estimates the expected date of delivery from the recorded body temperature and recorded notes. Some have an estimation function.
[0003]
[Problems to be solved by the invention]
However, in the conventional female thermometer having such an estimation function, the accuracy of the estimation function is not sufficient, and a satisfactory estimation result cannot always be obtained.
[0004]
The present invention has been made in view of the above conventional example, and an object of the present invention is to provide a female thermometer capable of predicting the expected delivery date with high accuracy.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a body temperature measuring means for measuring a basal body temperature, an input means for inputting physiological data, and a continuous absence exceeding a predetermined number of days in the measured basal body temperature. When the basal body temperature measured retroactively on the first day of recent menstruation is invalidated and there is a continuous lack of a predetermined number of days or less, an interpolation means for interpolating the missing basal body temperature, and a basal body temperature measured by the body temperature measurement means and Estimation means for estimating a date of expected delivery based on the physiological data input by the input means.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
A female thermometer to which the present invention is applied will be described with reference to the drawings.
[0007]
<Device configuration>
FIG. 2A is a top view in which the lid 31 of the thermometer main body is opened by about 120 degrees, and FIG. 2B is a side view in a state in which the lid is closed. This thermometer body includes a probe 32 provided with a sensor unit 32a for detecting body temperature by inserting it into the mouth, information on measurement values such as measurement date and time, measured body temperature, basal body temperature trend, battery exhaustion, etc. A display panel 33 for displaying information related to the control of the apparatus and a key panel 34 for inputting various information associated with body temperature measurement are provided. Although not shown, a connector for connecting a personal computer or the like as a host is also provided. The thermometer also has an alarm function to promote timed measurement, and sounds a wake-up sound to prompt the user to measure body temperature at a separately set time.
[0008]
More specifically, the display panel 7 displays not only the date and measured body temperature, or the trend graph of the measured body temperature, but also the basal body temperature measurement results such as the next ovulation date, the next menstruation date, and the expected delivery date. The schedule display bar 33a for displaying the date estimated based on it is included. Also included is a memo display bar 33b for indicating each memo item, such as a physiological memorandum and a fever memo, which is input along with the measurement of the basal body temperature. Note that FIG. 2 shows that all the display bars 33a and 33b are displayed, but these are not all displayed at the same time, and each display bar is displayed when the corresponding item is displayed or input. The
[0009]
The key panel 34 as an input unit includes various keys such as a power key, a memo key, a function key, a confirmation key, a body temperature display / movement key (+ key and -key), an alarm key, and a cancel key. Corresponding to each display bar described above, item names indicating what each display bar means are described.
[0010]
FIG. 1 is a block diagram showing the overall configuration of a thermometer (women's thermometer) for controlling the body temperature measurement by the thermometer of FIG.
[0011]
In FIG. 1, the CPU 41 executes a predetermined program to control the entire apparatus, measures body temperature according to a procedure described later, and obtains various intermediate data and estimated values based on the measurement results. The clock 8 is a clock that records real time. The display unit 7 is a liquid crystal panel or the like and displays measured body temperature, measured value trends, various predicted values, and the like. The body temperature measurement unit 1 can predict the equilibrium temperature from the temperature measured by the probe 32 by the method described above. The input unit 44 includes a key panel 34, and inputs priority time and various control information. The RAM 42 stores measurement values once a day and set values of each memo item for a predetermined number of days (for example, 240 days), and various intermediate data for each menstrual period (from the first menstrual day to the day before the next menstrual day). In addition to a measurement value storage unit 421 that stores the operation mode, a mode storage unit 422 that stores the operation mode, and the like, it is used as a work area. If a non-volatile rewritable memory is used for the storage units 421 to 422, there is no need for battery backup. The ROM 43 stores a program 431 executed by the CPU 41 in addition to the fixed data. The thermometer can also be connected to a host device (not shown) via the host interface 45.
[0012]
<Functions of female thermometer>
FIG. 3 is a state transition diagram showing transitions of function modes for performing various functions of the lady's thermometer, such as body temperature measurement, memo input, and estimation result calculation and display.
(1) Stop mode When the power switch is turned off or when a predetermined time elapses after the power is turned on, the stop mode is entered. Even when the lady's thermometer is in the power-off state, the power supply of the entire circuit is not cut off, and the input unit 44 or the CPU 41 or the like, such as the clock 8 or the CPU 41, for performing the function in the alarm timer or data processing mode. Electric power is supplied to the portions excluding the display unit 7, the body temperature measurement unit 1, the sensor unit 32a, and the like, although they are weak. In the stop mode, power is supplied only to a portion necessary for restarting in this way.
(2) Measurement mode The measurement mode is entered when the power switch is turned on or reset by the cancel key. In this measurement mode, the current day measurement value indicated by the clock 8 is displayed in the initial state. In addition, the memo display bar 33b corresponding to the memo item set as the date data is displayed together with the measured value of the specified day by operating the + key or the-key of the body temperature display / movement key. In this measurement mode, the measurement value from the sensor unit 32a is monitored, and the body temperature measurement is started when the measurement start condition is met.
(3) In the memo mode measurement mode, when the memo key constituting the key panel 34 as the input unit 44 is pressed, the mode transits to the memo mode. When entering this mode, it is possible to input notes related to six items of physiological matters such as a physiological memo and a fever memo for the date set in the measurement mode. Each time the memo key is pressed, the items to be set are shifted sequentially. At that time, the memo display bar 33b corresponding to the item currently set is displayed blinking. The operator can know the item to be set by looking at the blinking display. When the confirmation key is pressed for each item, the fact that the memo item has been set is stored, the memo display bar 33b corresponding to the item is displayed, and the measurement mode is restored. Also, no item is confirmed, and the measurement mode is returned to when the sixth memo key is pressed.
[0013]
The memo item set in this way is read for each date specified in the measurement mode, and a memo display bar 33b corresponding to the set item is displayed.
(4) Estimated date display mode When the function key is pressed in the measurement mode, the mode shifts to the estimated date display mode. When entering this mode, the next ovulation date is first displayed from the various data already calculated and stored. There are a total of three items displayed in this mode, and each time the function key is pressed, the displayed items shift to the next menstruation date and the scheduled delivery date, and the measurement key is returned to the measurement mode with the third function key.
(5) Data processing mode In this mode, data processing to be described later is executed. This mode shifts when the power switch is turned off or after 5 hours have elapsed from the set time of the alarm alarm. However, data processing is only performed once a day, and if the mode is shifted to this mode more than once a day, the data processing is not performed in the second and subsequent times, and the processing ends immediately and the stop mode is entered. Migrate to
[0014]
The mode of the female thermometer of this embodiment is the above five modes. When the cancel key is pressed in each mode, the measurement mode is restored. In each mode other than the measurement mode, the time elapsed without key input is measured, and when a predetermined time elapses, the state returns to the same state as when the cancel key is pressed. Similarly, when a predetermined time elapses in the measurement mode, the mode automatically shifts to the stop mode. Further, the key input for transitioning from the measurement mode to each mode is considered to be input when the key is pressed for a predetermined time in order to prevent erroneous input.
[0015]
<Body temperature measurement sequence>
In the measurement mode, when the user inserts the sensor part 32a at the tip of the probe 32 into the mouth and starts measuring the body temperature, the body temperature measuring part 1 follows the predetermined procedure based on the temperature input from the sensor part 32a. Start measuring. Then, the measurement value obtained when the measurement is completed is stored in the RAM 42. For this purpose, the body temperature measurement unit 1 samples the temperature data detected by the sensor unit 32a every predetermined time. In the main body thermometer, when the sample data exceeds 30 ° C. and the rate of temperature increase is 0.25 ° C./4 seconds or more, body temperature measurement is started from that point.
[0016]
When the measurement is started, the temperature detected by the sensor unit 32a is sampled every predetermined sampling period (for example, 2 seconds), and the body temperature is measured by a predetermined method based on the sample data. Here, the peak hold method is used for measurement. In the peak hold method, the temperature is periodically sampled, and the highest value among the sampled temperatures is held. The temperature measuring unit 1 ends the measurement when the rate of increase in the sample data becomes a predetermined value, for example, 0.019 ° C./16 seconds or less, and the CPU 41 uses the highest value obtained at that time as the measured value. The data is stored in the RAM 42. The sample data used for the measurement does not use the measurement value from the sensor unit 32a as it is, but as the sample data at a certain point in time, obtain the arithmetic addition average of the three sample data including the data itself and its front and back, Used as sample data. By doing so, it is possible to perform measurement more accurately while suppressing variations in sampling. When one measurement is completed in this way, the measurement value is read from the RAM 42 by the display control unit 6 and displayed on the display unit 7.
[0017]
<Contents of data processing>
In the data processing mode, the accumulated measurement value is used to determine the first day of menstruation, and if the first day of menstruation is updated from the previous date, the latest menstrual period from the first day of menstruation before the update to the day before the first day of menstruation is updated. In addition to obtaining the average high-temperature phase period and average low-temperature phase period for the cycle, the average menstrual cycle and reference body temperature are calculated using data on past menstrual cycles accumulated so far. Furthermore, it is determined whether the day of measurement (hereinafter referred to as today) is a high-temperature phase or a low-temperature phase, and an ovulation day is detected to calculate an average body temperature. Finally, these data are used to predict the next menstruation date, the next ovulation date, and the expected birth date.
[0018]
FIG. 4 is a diagram illustrating an example of a menstrual cycle. The numbers with circles represent the first period of menstruation in each menstrual cycle, and the symbols a to h in between indicate the menstrual cycle. Each menstrual cycle includes a low-temperature phase HN starting from the first day of menstruation and a high-temperature phase starting from the date of ovulation. This female thermometer predicts (estimates) the next ovulation day and menstrual day with high accuracy when in a certain menstrual cycle, and also predicts (estimates) the expected date of delivery if it is determined to be pregnant from the measurement results To do. Further, various data processing will be described with reference to FIG. 4. At that time, the measurement starts from the middle of the menstrual cycle a in FIG. 4, and the sign (1) is the first day of menstruation to be confirmed first. To do. The contents of the processing are as follows.
[0019]
(1) Calculation timing FIG. 5 is a flowchart showing the entire processing. The arithmetic processing shown in FIG. 5 shifts to the data processing mode when the power switch is turned off or after the wake-up alarm set time elapses 5 hours. It is done once. After the second time, nothing is performed and the process ends. It is assumed that the initial value of the wake-up time is set at exactly 6:00 am. Next, the process in each step will be described in more detail.
[0020]
(2) Menstruation first day determination / When menstruation memo input continues for a predetermined number of days or more, for example, three days or more, the first day of menstrual memo input is determined to be the menstrual first day. When it is less than a predetermined number of days, for example, less than 3 days, it is considered as a physiological misperception.
・ When there is no physiology memo and the low temperature phase is started, the start date of the low temperature phase is set as the first day of menstruation. However, if the menstrual memo is input before the high temperature phase is started, the first menstrual period is corrected.
[0021]
(3) Average menstrual cycle (not shown)
In FIG. 4, symbols (1) to (8) are menstrual first days, and sections b to h are menstrual cycles. That is, the menstrual cycle is from the first day of menstruation to the day before the next menstruation day.
-The average menstrual cycle is calculated after the first day of menstruation is confirmed, and the calculation result is retained until the next menstruation day is confirmed. For example, in the menstrual cycle g in FIG. 4, the average menstrual cycle is calculated after the first physiological period {circle around (6)} of the period g is determined and held until immediately before the first physiological period {circle around (7)} of the next period.
The average menstrual cycle is obtained by averaging the predetermined menstrual cycle (four times) obtained by removing the longest cycle and the shortest cycle from the menstrual cycle of the latest predetermined times (six times).
-If the menstrual cycle is averaged for a predetermined number of times (four times), and there is a valid menstrual cycle (described later) for a predetermined number of times (three times), the calculated average menstrual cycle is valid.
When data for a predetermined period, for example, 6 periods, has not been obtained since the start of measurement, as an interim measure, if there are effective periods for a predetermined number of times, for example, 3 times, the average is set as the average menstrual period. For example, in the interval e in FIG. 4, the average menstrual cycle = (b + c + d) / 3. However, b, c, and d are effective menstrual cycles.
[0022]
Similarly, in the interval f, the average menstrual cycle = (b + c + d + e) / 4. However, b, c, d, and e are effective menstrual cycles.
[0023]
Also, in the interval g, the average of the effective menstrual cycles over a predetermined number (three times) excluding the longest is defined as the average menstrual cycle.
-The menstrual cycle is valid for a predetermined number of days, for example, 21 days or more and 42 days or less.
The average menstrual cycle is valid if the longest cycle and the shortest cycle in the menstrual cycle (maximum 4 cycles) used for calculating the average menstrual cycle satisfy the relationship (longest cycle <shortest cycle × 2).
[0024]
For example, the average menstrual cycle cannot be obtained in the sections a, b, c, and d. In addition, when there is no predetermined number of effective menstrual cycles, for example, 3 or more within a predetermined menstrual cycle, for example, 6 menstrual cycles, or even when there are a predetermined number of effective menstrual cycles, for example, 3 or more (longest cycle <shortest cycle × If 2) is not satisfied, or if the average menstrual cycle is not valid as a result of the calculation, there is no data on the average menstrual cycle.
[0025]
Thus, the average menstrual cycle is the average of effective menstrual cycles for at least a predetermined number of times (three times), excluding the maximum and minimum from the menstrual cycle for a predetermined number of times (six times).
[0026]
(4) Average high-temperature phase period (not shown)
4, symbols (1) to (8) are the first day of menstruation, ◎ is the date of ovulation (determined by detection of ovulation day described later), and sections A to G are the high temperature phase period (from the day after the day of ovulation to the day before the first day of menstruation). , And b to h are menstrual cycles.
-The average high-temperature phase period is calculated after the first day of menstruation is confirmed, and the calculation result is retained until the next day of menstruation is confirmed.
The average high temperature phase period is obtained by averaging a predetermined number of recent times, for example, six times of the high temperature phase period, excluding the longest period and the shortest period, for example, four high temperature phase periods.
The calculated average high-temperature phase period is valid if there is an effective high-temperature phase period (described later) for a predetermined number of times, for example, four times of the high-temperature phase period to be averaged.
When data for a predetermined number of times, for example, six times has not been obtained since the start of measurement, as a provisional treatment, in the section e, the average high temperature phase period = (A + B + C) / 3. However, A, B, and C are effective high temperature phase periods.
[0027]
Similarly, in the section f, the average high temperature phase period = (A + B + C + D) / 4. However, A, B, C, and D are effective high temperature phase periods.
[0028]
In the section g, the average of the high-temperature phase periods that are valid predetermined times except the longest, for example, three or more high-temperature phase periods is defined as the average high-temperature phase period.
-The high temperature phase period is valid for a predetermined number of days, for example, 12 days or more and 16 days or less. Ineffective high temperature phase periods are excluded from the calculation.
[0029]
For example, in the sections a, b, c, and d, the average high temperature phase period cannot be obtained. In addition, there is no average high-temperature phase period data when there is no more than a predetermined number (three) of effective high-temperature phase periods in the latest menstrual cycle, for example, the June menstrual cycle, or when the average high-temperature phase period is not valid as a result of calculation. Shall.
[0030]
(5) Average low-temperature phase period (not shown)
In FIG. 4, symbols (1) to (8) are the first period of menstruation, ◎ is the date of ovulation (determined by detection of ovulation day described later), sections H to N are the low-temperature phase period (from the first period of menstruation to the date of ovulation), sections b to h is the menstrual cycle.
・ The average low-temperature phase period is calculated after the first day of menstruation is confirmed, and the calculation result is retained until the next day of menstruation is confirmed.
The average low temperature phase period is obtained by averaging a predetermined number of recent times, for example, six times of the low temperature phase period, excluding the longest period and the shortest period, for example, four low temperature phase periods.
The calculated average low-temperature phase period is effective if there are effective low-temperature phase periods (described later) for a predetermined number of times, for example, four times of the low-temperature phase period averaged, for example, three times or more.
-When data for a predetermined number of times, for example, six times has not been obtained since the start of measurement, as a provisional treatment, the average low temperature phase period = (H + I + J) / 3 is set in the section e. However, H, I, and J are effective high temperature phase periods.
[0031]
Similarly, in the interval f, the average high temperature phase period = (H + I + J + K) / 4. However, H, I, J, and K are effective low temperature phase periods.
[0032]
In the section g, the average of the low-temperature phase periods that are valid predetermined times except the longest, for example, three times or more is defined as the average low-temperature phase period.
-The low temperature phase period is valid for a predetermined number of days, for example, 5 days to 30 days. Ineffective low-temperature phase periods are excluded from the calculation.
[0033]
For example, in the sections a, b, c, and d, the average low temperature phase period cannot be obtained. In addition, when there is no more than a predetermined number (three) of effective low-temperature phase periods in a predetermined menstrual cycle, for example, in the June menstrual cycle, or when the average low-temperature phase period is not valid as a result of calculation, the average low-temperature phase period data is Make it not exist.
[0034]
(6) Next menstruation schedule (display)
In FIG. 4, reference signs (1) to (6) are memo input dates on the first day of menstruation, and sections a to g are menstrual cycles.
-The next menstrual day is calculated after the calculation of the average menstrual cycle and the average high temperature phase period is completed after a predetermined period, for example, the fourth menstrual first day has been determined. In addition, since the next menstrual scheduled date is not calculated | required in the area ad of FIG. 4, suppose that there is no data of the next menstrual date in that case.
The next menstrual day is calculated (estimated) as a predetermined period, for example, a period of 3 to 7 days (XX month XX day to XX month XX day).
-If the day of this calculation process is a low-temperature phase (determined by phase determination described later)

And However, the possible period is assumed to be equivalent to 1.5σ / 2, with the distribution of the menstrual cycle used for calculating the average menstrual cycle as a normal distribution. The possible period is rounded to the first decimal place.
-If the day of this calculation process is a high-temperature phase (determined by phase determination described later)

And However, the possible period is equivalent to 1.5σ / 2, assuming that the distribution of the high temperature phase period used for the calculation of the average high temperature phase period is a normal distribution. The possible period is rounded to the first decimal place.
[0035]
When displaying the next menstruation estimated in this way, display control is performed as follows according to the conditions of the display day.
-When the display day is not included in the period of the next period, the calculated next period is displayed as it is.
-If the display date is within the period of the next menstruation period, and if it is a predetermined number of days before the last day of the period, for example, 3 days ago, the period displayed is from the date of the display day to the next period The last day of the period. That is, from the display date to the latest menstrual first day + average menstrual cycle + possible period, or from the date of display to the latest ovulation date + average high-temperature phase period + possible period.
When the display day is the last day of the next menstrual day-after the third day, the display is from the date of the display day to the date of the display day + 3 days until the first day of menstruation.
-As a result of the calculation, when the next menstruation period is a predetermined number of days, for example, a period of 8 days or more, the display is "--month--day --- month--day".
-When the display day is the high temperature phase and the number of days from the ovulation date is a predetermined number of days, for example, 17 days or more, the display is "--month--day to --- month--day".
・ If the average menstrual cycle or average high-temperature phase period has not been established, the display shall be "--month--day to --- month--day".
[0036]
(7) Reference body temperature (not shown)
In FIG. 4, symbols (1) to (8) are the first day of menstruation, ◎ is the ovulation day, zones A to G are the high temperature phase, zones H to N are the low temperature phase, and zones b to h are the menstrual cycle. The reference body temperature is calculated after the first day of menstruation is determined, and thereafter held until the first day of menstruation is determined.
・ The standard body temperature is

As required. However, the high-temperature phase average body temperature and the low-temperature phase average body temperature are obtained by the average body temperature described later.
[0037]
For example, the reference body temperature on the first day of menstruation (4) is

It is.
[0038]
In addition, the reference body temperature is not updated on the first menstruation (1).
[0039]
On the first day of menstruation (2),
Reference body temperature = (average body temperature in section A + average body temperature in section H) / 2
On the first day of menstruation (3),

It is.
The reference body temperature in the sections a to b is given in advance as reference body temperature = 36.5 ° C.
[0040]
(8) Average body temperature (not shown)
As the average body temperature, each of the high-temperature phase average body temperature and the low-temperature phase average body temperature is calculated after the first physiological first day is determined.
The high-temperature phase average body temperature is calculated based on the body temperature up to a predetermined day, for example, 3 days before the start of the low-temperature phase, with the body temperature on the predetermined day, for example, the third day, from the start of the high-temperature phase as an initial value.
The average body temperature of the low-temperature phase is calculated based on the body temperature up to a predetermined day, for example, 3 days before the start of the high-temperature phase, with the body temperature on the predetermined day, for example, the third day from the start of the low-temperature phase as an initial value.
[0041]
(9) Phase judgment (not shown)
Determine the phase of the day of measurement.
・ If body temperature on the day ≥ reference body temperature, the body temperature is set to hyperthermia.
・ If the body temperature of the day <the reference body temperature, hypothermia.
The phase determination is performed every predetermined day, for example, every day after the low temperature phase is first confirmed from the start of recording.
-If hypothermia continues for a predetermined number of days on the day, for example, 3 consecutive days, the low temperature phase starts from a predetermined number of days, for example, 2 days. Alternatively, when the first day of menstruation is confirmed, the low temperature phase starts from the menstruation start date.
-If the hyperthermia continues for a predetermined number of days on the day, for example, 3 consecutive days, the high-temperature phase starts from a predetermined number of days, for example 2 days. However, when there is a fever memo input within a predetermined number of consecutive days, for example, within 3 days, or when the body temperature is 37.5 ° C. or higher, the measurement result is excluded from the calculation.
[0042]
(10) Ovulation day detection (not shown)
・ The ovulation date is calculated after the start date of the high temperature phase is updated in the phase determination.
・ Ovulation date is the last day of the low-temperature phase, so it can be calculated by the following formula after phase determination.
[0043]
Ovulation date = high temperature phase start date -1
(11) Next ovulation day schedule (display)
The next ovulation day is calculated (estimated) after the calculation of the average menstrual cycle and the average low-temperature phase period after a predetermined number of times, for example, the fourth menstrual first day is determined. Since it cannot be calculated in the sections a to d, “−−month−−day −−− month−−day” is set.
-The next ovulation day is displayed as a predetermined period, for example, a period of 3 to 7 days (XX month XX day to XX month XX day).
・ If the day is the low temperature phase,

And However, the possible period is assumed to be 1.5σ / 2, assuming that the distribution of the low temperature phase period used for the calculation of the average low temperature phase period is a normal distribution. The possible period is rounded to the first decimal place.
・ If the day is the high temperature phase,

And However, the possible period is assumed to be equivalent to 1.5σ / 2, with the distribution of the menstrual cycle used for calculating the average menstrual cycle as a normal distribution. The possible period is rounded to the first decimal place.
[0044]
When displaying the next ovulation date estimated in this way, display control is performed as follows according to the conditions on the display day.
・ If the displayed date is not included in the next ovulation date period, the calculated next ovulation date is displayed as it is.
-If the current day is within the calculated period of the next ovulation, and the period from the last day of the period to a certain day before, for example, 3 days before, the displayed period is from the date of the displayed day to the period of the next ovulation day. The last day. That is, from the display date to the latest physiological first day + average low-temperature phase period + possible period, or from the display date to the latest ovulation date + average menstrual cycle + possible period.
-If the display day is the last day of the next ovulation day-after the third day, the display will be from the date of the display day to the date of the display day + 3 days until the ovulation day.
-As a result of the calculation, when the next ovulation day is a predetermined number of days, for example, 8 days or more, the display is "--month--day to --- month--day".
When the day is a high temperature phase and the number of days from ovulation is a predetermined number of days, for example, 17 days or more, the display is "--month--day to --- month--day".
• If the average menstrual cycle or average low-temperature phase period has not been established, the display shall be "--month--day to --- month--day".
[0045]
(12) Expected delivery date prediction (display)
When the number of days from the last ovulation day exceeds a predetermined number of days, for example, 20 days, and that day (latest measured body temperature) is a hyperthermia, it is estimated by the following equation.
[0046]
Expected date of birth = ovulation date + 265 days-When the expected date of birth is not required, the display is "--month--day to --- month--day".
[0047]
(13) Missing data of measured body temperature (forgotten) Post-treatment basal body temperature should be measured every day in principle, but if data is missing due to forgetting to measure, missing as internal data Calculated from the measured body temperature one day before. However, the missing data is not displayed, and the temperature display on the missing date is “−−.−− ° C.”. The missing data is compensated so as to linearly interpolate the measured value immediately before and after the missing value. That is, the following example.
If the measured body temperature data is missing for one day (the Nth day), if the measured value on the (N-1) th day is a and the measured value on the (N + 1) th day is b,

・ When the measured body temperature data is missing for 2 days (day N, day N + 1)

Similarly, when the measured body temperature data is missing for m days, the body temperature on the missing day n = a + n (ba) / (m + 1)
The number of consecutive days m of the measured body temperature missing data is allowed up to a predetermined number of days, for example, up to 8 days. If there are omissions exceeding the predetermined number of days, for example, 8 days, the body temperature data is invalidated by going back to the latest menstrual day.
When the valid data of the measured body temperature is not less than a predetermined ratio of the number of days in the menstrual cycle, for example, 50% or more, the data in the menstrual cycle is valid. When the ratio is less than a predetermined ratio, for example, less than 50%, the data in the menstrual cycle is invalidated.
[0048]
<Data processing procedure>
The contents of the processing have been described for each item. The data processing procedure will be described as a series of processing with reference to FIGS. FIG. 5 is a flowchart showing the overall flow of processing, which is realized by executing a program stored in the ROM 43 by the CPU 41 in FIG. Hereinafter, the contents of the processing will be described with reference to a flowchart. Note that FIGS. 6 to 9 are flowcharts showing a part of the contents of the above-described processes, so that only a simple touch can be made.
[0049]
In FIG. 5, it is first determined whether today's body temperature measurement has already been completed (step S501). If it has been completed, the process ends. If not completed, the missing data is first interpolated (step S501). That is, if there is a missing period of a predetermined number of days, for example, 8 days or more, the data after the first day of the latest menstrual period is invalidated. Interpolation is performed according to the equation b−a) / (m + 1)). This is as described in item (13) above.
[0050]
Next, the first day of menstruation is determined (step S503). The details are as described in item (2) above, but are shown again in FIG. That is, if the physiological memorandum input is continued for a predetermined day or more, for example, three days or more, the first day is updated, that is, the date before the predetermined day, for example, two days before that day (step S803). When the start date of the low temperature phase is updated in step S5109, the process returns to step S503, and the first physiological day is updated with the start date of the low temperature phase (step S808). In addition, when the first menstrual day is updated in step S808, the first menstrual day is updated with the date when the menstrual memo is input before the high temperature phase is reached (step S806). The first day of menstruation is updated with any of these three as a trigger.
[0051]
Next, if the immediately preceding menstrual cycle is confirmed, that is, if this is the first processing after the new menstrual first day is confirmed, and the data of the immediately preceding menstrual cycle is valid, the calculation of the average menstrual cycle ( Step S506), calculation of average high temperature phase period and average low temperature phase period (step S507), and calculation of reference body temperature (step S508) are performed. These three values are calculated in the manner described in the above items (3) to (5) and (7).
[0052]
Steps S506 to S508 are processes performed once in one menstrual cycle. In contrast, steps S509 to S514 are executed every time body temperature is measured.
[0053]
First, phase determination and ovulation date detection are performed (step S510). The details are as described in the above items (9) and (10), and are shown again in FIG. That is, in principle, if the body temperature is low or high for three consecutive days, the first day is set as the start date of the low temperature phase or the high temperature phase, respectively (steps S1103 and S1106). However, if the first day of menstruation is updated on that day, even if it is not a hypothermic temperature for three consecutive days, for example, the updated first day of menstruation is set as the start date of the low temperature phase (steps S1108 and S1109). In addition, when the temperature exceeds a predetermined temperature or when a heat generation memo is input, the measurement value for that day is not adopted. Further, the day before the high temperature phase start date is set as the ovulation day in the menstrual cycle (step S1107).
[0054]
When the phase determination is performed in step S509, it is determined in step S510 that the low-temperature phase start date is updated as of today and that the physiological first day is not updated. If the result is affirmative, the first day of menstruation needs to be updated with the start date of the low temperature phase, so the process returns to step S503 to update the first menstrual day again. Accordingly, the first day of menstruation is newly determined, and data processing related to the menstrual cycle immediately before is performed in steps S504 to S508.
[0055]
Thereafter, average body temperature calculation (step S511), next menstrual day prediction (estimation) calculation (step S512), next ovulation day prediction (estimation) calculation (step S513), and expected delivery date prediction (estimation) calculation (step S514). Are sequentially performed to finish the processing in the data processing mode.
[0056]
As explained in item (8), the average body temperature is the predetermined date from the start date of the immediately preceding phase, for example, the start date of the current phase from the third day, when the change of the high temperature phase / low temperature phase is confirmed. The average body temperature up to a predetermined day before, for example, 3 days before is obtained.
[0057]
As shown in FIG. 8 (A), the next menstrual day is predicted (estimated) by adding an average high temperature phase period based on the last ovulation date if the current high temperature phase, and taking into account variations around that day ( Step S1305). In the case of the current low-temperature phase, an average menstrual cycle is added with reference to the last first physiological period, and prediction (estimation) is performed by taking into account variations around that day (step S1303). This is as described in the items (6), (11), and (12).
[0058]
As shown in FIG. 8 (B), the next ovulation day is predicted (estimated) by adding an average menstrual cycle based on the last ovulation day in the current high-temperature phase, and taking into account variations around that day (step). S1404). If it is the current low-temperature phase, the average low-temperature phase period is added with reference to the first physiological first day, and the prediction is performed by taking into account variations around that day (step S1406).
[0059]
As shown in FIG. 9, the expected date of birth is determined as the expected date of birth on the 265th day from the last ovulation date when 20 days or more have passed since the last ovulation date and, for example, in the high temperature phase. (Step S1503).
[0060]
The measured body temperature and the values calculated as described above are all stored in the RAM 421 and stored for 240 days. That is, for example, about 6 to 10 cycles are stored if the value is calculated for each cycle of the menstrual cycle, such as a menstrual cycle, a high temperature phase period, a low temperature phase period, and an average body temperature. Therefore, sufficient data can be stored in order to calculate values obtained based on data in many previous menstrual cycles, such as the average high temperature phase period and the average low temperature phase period.
[0061]
Physiological factors such as the first day of menstruation, average menstrual cycle, ovulation date, average high-temperature phase cycle, and average low-temperature phase cycle obtained from the measured basal body temperature and physiological items such as physiological memorandum and fever memorandum according to the configuration and processing procedure described above. The next menstrual day or the next ovulation day is predicted according to the current phase (low temperature phase or high temperature phase). At this time, since the determination of the first physiological period is performed not only based on the input of the physiological memo but also based on the start date of the low temperature phase, the first physiological period can be accurately determined even if the physiological memo is not input. For this reason, it becomes possible to predict a menstrual day and an ovulation date with higher accuracy.
[0062]
Furthermore, since the first day is determined as the first day of the high temperature phase for the first time when the body temperature is high for three consecutive days, it is possible to determine with high accuracy that the last day of the low temperature phase is the ovulation day. Further, the accuracy of the start date of the high temperature phase increases, so that the accuracy of data processing using the high temperature phase period or the current phase increases.
[0063]
Furthermore, in order to estimate the missing basal body temperature data so as to linearly interpolate the values actually measured before and after the missing period, even if the missing period includes the boundary between the high temperature phase and the low temperature phase The phase boundary can be estimated such that the maximum value of the error is minimized.
[0064]
In addition, when using physiological cycles obtained from basal body temperature data, only reliable values are used in order to set conditions to be effective values and to use only those values that match them. Thus, various values can be calculated.
[0065]
【The invention's effect】
As described above, the feminine thermometer according to the present invention determines the day before the start date of the high temperature phase as the ovulation day based on the basal body temperature and the input physiological matters, and more than 20 days have passed since the last ovulation day. If it is still in the high temperature phase, 265 days after the last ovulation date is estimated as the expected delivery date. Thus, in order to predict the final day of the low temperature phase based on the date of ovulation, the expected delivery date can be estimated with high accuracy from the input physiological items and the measured basal body temperature.
[0066]
[Brief description of the drawings]
FIG. 1 is a block diagram of a female thermometer.
FIG. 2 is an external view of a female thermometer main body.
FIG. 3 is a state transition diagram showing transition of a processing mode of a female thermometer.
FIG. 4 is a diagram showing an example of a female physiological cycle.
FIG. 5 is a flowchart of a data processing procedure by a female thermometer according to the present invention.
FIG. 6 is a flowchart of a procedure for determining the first day of menstruation.
FIG. 7 is a flowchart of a procedure for phase determination and ovulation date detection.
FIG. 8 is a flowchart of a procedure for predicting the next menstrual day and the next ovulation day.
FIG. 9 is a flowchart of a procedure for predicting a scheduled delivery date.
[Explanation of symbols]

Claims (2)

Body temperature measuring means for measuring basal body temperature;
An input means for inputting physiological data;
If there is a continuous deficit in the measured basal body temperature that exceeds the predetermined number of days, the basal body temperature measured retroactively on the first day of the latest period is invalidated. Interpolation means for interpolating
A female thermometer comprising: an estimation means for estimating a date of expected delivery based on the basal body temperature measured by the body temperature measurement means and the physiological data input by the input means. The interpolation means linearly interpolates the missing basal body temperature from the measured values before and after the missing period,
The estimation means determines that the last day of the low-temperature phase is the ovulation day from the measurement history of the basal body temperature by the body temperature measurement means, and if it is still in the high-temperature phase after a lapse of the first predetermined number of days from the last ovulation date The feminine thermometer according to claim 1, wherein the second predetermined number of days after the last ovulation day is estimated as the expected delivery date.

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