JP3223098B2 - Electronic thermometer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic thermometer, and more particularly, to a prediction calculation formula based on a temporal change of a detected temperature, performing a prediction calculation, and holding the predicted calculation value as a predicted equilibrium temperature value. The present invention relates to an electronic thermometer that displays a temperature value measured until a predetermined time after the start of measurement as an actually measured temperature value and displays these two temperature values.

[0002]

2. Description of the Related Art In a conventional predictive electronic thermometer, for example, when a detected temperature is equal to or higher than a predetermined value and a temperature rise rate is equal to or higher than a predetermined value, the starting point of the prediction operation is set, and the fluctuation of the prediction operation value is within a predetermined value. The point at which the forecast was reached was determined. In general, the prediction formula is given by Y = T + U, where Y is the predicted value, T is the detected temperature, and U is the added amount.

In this case, various calculation methods are known as the addition amount U. For example, if t is the elapsed time (second) from the measurement start point, U = a ₁ × dT / dt + b ₁ , or U = (A ₂ × t + b ₂ ) × dT + (c ₂ × t + d ₂ )
and so on.

Here, a ₁ , b ₁ , a ₂ , b ₂ , c ₂ ,
d ₂ is a coefficient (parameter).

[0005] In order to keep the accuracy of the added amount U constant regardless of the difference between the subject and the temperature measuring element, the coefficients a ₁ , b ₁ , a ₂ , b ₂ , of the optimal prediction formula (calculation formula) are used. There is also a device for selecting c ₂ and d ₂ .

[0006] In addition, prediction of temperature rise is divided into groups based on the characteristics of the subject and the characteristics of the temperature measuring element, and coefficient groups of a calculation formula are assigned. Further, in order to maintain the continuity of the display value of the body temperature displayed on the display unit, it is considered that U is weighted. For example, if the display value is H and the weight function M = (t / 50) ² , then H = T + U × M. In this case, the display value H (° C. or ΔF) displayed on the display becomes equal to the predicted value Y when t is 50 seconds.

[0007]

However, in the conventional predictive electronic thermometer, once a group is classified at a certain time after the start of the measurement, only the coefficients of the calculation formulas in the group are used thereafter, and this is not possible. Even if it is appropriate, a predicted equilibrium temperature value based on the coefficient is displayed, or conversely, if it is determined to be inappropriate, all errors are displayed as errors.

Therefore, in this case, if the initial grouping is inappropriate, the accuracy of predicting the equilibrium temperature is significantly reduced.

Further, in an electronic thermometer that changes the temperature display to the actually measured temperature value when the predicted equilibrium temperature has low reliability, the predicted equilibrium temperature value is not displayed when confirming the body temperature after the measurement, and the actual measured temperature is not displayed. Since only the temperature value is displayed, there is a problem that it cannot be determined whether the accuracy of the predicted equilibrium temperature value is appropriate (whether or not there is high reliability).

The present invention has been made in view of the above-mentioned conventional drawbacks, and provides an electronic thermometer that displays two values, a predicted equilibrium temperature value and a measured temperature value, with high prediction accuracy.

According to the present invention, an electronic device for displaying a low-accuracy predicted equilibrium temperature value or a low-accuracy actually measured temperature value due to an inappropriate method of mounting a thermometer on a subject or the like. Provide a thermometer.

[0012]

Means for Solving the Problems In order to solve this problem, an electronic thermometer of the present invention is an electronic thermometer that detects the temperature of a measurement site over time and predicts an equilibrium temperature,
Temperature measuring means, grouping means for grouping the temperature rising tendency based on a temporal change in the initial temperature detected by the temperature measuring means, and detection by the temperature measuring means for a predetermined period after the grouping Group changing means for changing the grouping based on a change over time in temperature; calculating means for calculating a predicted equilibrium temperature value based on data of the group divided by the grouping means or the group changing means; First temperature holding means for holding the predicted equilibrium temperature value calculated by the means, second temperature holding means for holding the measured temperature value detected by the temperature measuring means, the predicted equilibrium temperature value and the measured An electronic clinical thermometer comprising: a temperature notifying means for alternately notifying a temperature value, wherein the electronic thermometer is based on an actually measured temperature value and a temperature rise rate of the actually measured temperature.
Difference between the maximum temperature value and the actual temperature value.
Actual temperature measurement based on the difference from the minimum temperature value based on the temperature rise rate
A reliability judgment means for judging the reliability of the
Based on the conditions for the prediction at a predetermined time from the point
A reliability judgment means for judging the reliability of the equilibrium temperature value.
And the judgment result by the reliability judgment means is taken to the measured temperature value.
Or displayed together with the predicted parallel temperature value.
You.

[0013]

[0014]

[0015]

[0016]

Preferably, the grouping means divides into three or more odd groups.

Preferably, the grouping means divides the number into seven or more odd groups.

If it is impossible to change the grouping by the group changing means, it is preferable to further comprise a predicted value correcting means for correcting the predicted value when the prediction calculation is terminated.

The change of grouping by the group changing means may be performed once or several times at regular intervals or irregularly before the start of the prediction calculation or during the prediction calculation.

The change of grouping by the group changing means is preferably performed when the predicted value monotonically increases or monotonically decreases.

The change of the grouping by the group changing means is preferably performed based on a temporal change in a predetermined period after the grouping.

[0023]

Embodiments of the present invention will be described below with reference to the accompanying drawings. In this embodiment, an electronic thermometer that selects a prediction formula based on grouping will be described as an example of temperature prediction. However, an equilibrium temperature prediction thermometer using a regression curve, an equilibrium temperature prediction thermometer using an nth-order approximation function with respect to time, and the like. The technical idea of the present invention is also applied to other equilibrium temperature prediction thermometers.

FIGS. 1 and 2 are diagrams for explaining the principle of prediction of an electronic thermometer for selecting an equation for predicting an equilibrium temperature based on grouping.

In the predictive electronic thermometer of this embodiment, the body temperature of 600 seconds (10 minutes) after the start of the temperature measurement is measured 9 hours after the start of the temperature measurement.
Predict at 0 seconds. The prediction calculation is started when the detected actual measured temperature value is equal to or higher than a predetermined temperature (for example, 30 ° C.) and the detected temperature rise rate is equal to or higher than a predetermined value (for example, 0.25 ° C./4 seconds).

The predicted value Y is given by the following equation, where T is the detected temperature value and t is the elapsed time from the starting point of the temperature measurement.

U = (a × t + b) × dT + (c × t +
d)... Upper correction amount Y = T + U where a to d: coefficients (parameters), dT: past 20
Temperature rise for seconds. First from the starting point of temperature measurement
At a predetermined elapsed time (for example, t = 40 seconds). A predetermined time (for example, 10 seconds) is traced back from the first predetermined elapsed time, and the temperature rise value (vertical axis in FIG. 1) and the temperature (in this case, 30 seconds after the start of measurement) at the time (in this case, 30 seconds after the start of measurement) Using FIG. 1 (horizontal axis), the measurement data is divided into a plurality of groups, at least three groups. The groups may be divided into two or more even groups, but if the groups are constituted by a group having the most average thermal response and groups on both sides thereof, three or more odd groups are preferable. In order to obtain a more reliable predicted equilibrium temperature value, it may be divided into more odd groups.

In FIG. 1, it is divided into seven odd groups. Groups 1 to 5 are groups in which the equilibrium temperature value can be predicted, group 6 is unpredictable, group 7 is not a human body, and is not predicted.

Here, the first group is the group having the fastest thermal response, and although the initial temperature is high, the rise stops immediately, and the additional amount required for prediction is small. Conversely, group 5 is the group with the slowest thermal response, with the initial temperature being low but the temperature rising lasting until late, requiring a large amount of addition (see FIG. 2). These relationships are obtained from a large number of measurement samples.

After 40 seconds (first predetermined elapsed time from the start of temperature measurement), coefficients a to d corresponding to each group
The prediction calculation is performed using the value of.

As an example, 20 minutes after the first predetermined elapsed time
The values of the coefficients a to d of each group up to the second, that is, 40 to 60 seconds after the start of the temperature measurement are listed.

Group 1 a = 0.03859: b = -0.56178: c = -0.00642: d = 0.78483 Group 2 a = 0.03363: b = -0.15209: c = -0.00623: d = 0.7967 Group 3 a = 0.03363: b =- 0.15209: c = -0.00389: d = 0.7977 4 group a = 0.03363: b = -0.15209: c = -0.00674: d = 1.0937 5 group a = 0.06137: b = -0.85641: c = -0.00701: d = 0.95034 or less a The value of ~ d is switched to a predetermined value at predetermined time intervals (for example, 10 seconds) from 60 seconds to 90 seconds (a third predetermined elapsed time from the temperature measurement start point), and a prediction calculation is performed.

Further, in order to maintain the continuity of the displayed value, 50
Until the second (the second predetermined elapsed time from the temperature measurement start point), U is weighted. Assuming that the display value displayed on the liquid crystal display (LCD) is H (° C. or ΔF), H = T +
U × M.

Here, M is a weighting function, and M = (t
/ 50) ² .

From 50 seconds (the second predetermined elapsed time from the start of the temperature measurement) to 90 seconds (the third predetermined elapsed time from the start of the measurement), H = T + U, and no weighting is performed. That is, the display value H becomes equal to the predicted value Y from t of 50 seconds. When the prediction is established for 50 to 90 seconds, a buzzer sounds to notify the subject. Conditions for this prediction to be satisfied are the temperature rise value of the measured temperature value (the difference between the measured temperature value and the maximum temperature value based on the temperature rise rate of the measured temperature, or the minimum temperature value based on the temperature rise rate of the measured temperature value and the measured temperature). Difference with
Falls below a certain value determined by the group. The two points that the predicted equilibrium temperature value becomes stable (the slope of the regression line of the predicted equilibrium temperature value becomes below a certain value) are established.

Among the conditions for establishing the prediction, the condition for the temperature rise of the actually measured temperature value is, for example, 40 seconds from the start of the temperature measurement (first predetermined elapsed time from the start of the temperature measurement) to 60 seconds. In 20 seconds, 1 group ≦ 0.19 ° C./20 seconds 2 group ≦ 0.23 ° C./20 seconds 3 group ≦ 0.20 ° C./20 seconds 4 group ≦ 0.15 ° C./20 seconds 5 group ≦ 0. 17 ° C./20 seconds.

On the other hand, as for the condition for stabilizing the predicted equilibrium temperature value, as an example, the slope (KA) of the regression line of the predicted equilibrium temperature value is obtained by sequentially updating eleven data every two seconds in 20 seconds. Do it. When the slope of the regression line of the predicted value becomes 0.04 ° C./20 seconds or less, it is determined that the predicted value has high reliability (stable). Then, the predicted equilibrium temperature value is held in the first temperature holding means as a highly reliable predicted equilibrium temperature value.

The threshold of 0.04 ° C./20 seconds may be a lower threshold for higher reliability, or may be different for each group.

If the prediction is not established by 90 seconds (the third predetermined elapsed time from the start of the temperature measurement), the prediction is forcibly established within the predetermined time (90 seconds), and the calculated predicted value is corrected. Then, it is held in the first temperature holding means as a predicted equilibrium temperature value having low reliability (a predicted equilibrium temperature value whose accuracy is not stable). The method of correcting the predicted equilibrium temperature value will be described later.

After 90 seconds, the prediction calculation is not performed, and only the actual measurement value is measured, and the actual measurement value is held in the second temperature holding means while being updated every predetermined time (for example, every four seconds).

Thus, after 90 seconds, the predicted equilibrium temperature value and the actually measured (detected) temperature value are held in the first temperature holding means and the second temperature holding means, respectively, and these temperature values are displayed on the temperature display section by the display temperature H. Is displayed as

The outline of the prediction method of the prediction-type electronic thermometer according to the embodiment of the present invention has been described above.

The improvement of the temperature prediction will be described below.

The predicted value is observed after the grouping for 40 seconds after the start of the temperature measurement, and if the grouping is inappropriate, this is corrected by changing (moving) the group. When the grouping is inappropriate, the prediction value shows a monotonically increasing (up) or a monotonically decreasing (down) movement in the prediction calculation after the grouping.

Therefore, as shown in FIG. 3, when the value increases monotonically, the amount of addition is insufficient, so that the group moves to a group having a coefficient that increases the amount of addition. In the case of a monotonous decrease, the operation moves to a group having a coefficient with a smaller power.

After the grouping for 40 seconds (first predetermined elapsed time from the starting point of the temperature measurement) after the start of the temperature measurement, the predicted values are observed as follows.

The slope of the regression line of the predicted value is 0.02 ° C./2
If it is 0 seconds or more, the flag FKP is set to 1. When the slope of the regression line of the predicted value is 0 ° C./20 seconds to less than 0.02 ° C./20 seconds, the flag FKP is set to 0.

Conversely, when the inclination is -0.02 ° C./20 seconds or less, the flag FKM is set to 1. When the slope of the regression line of the predicted value is 0 ° C./20 seconds to less than −0.02 ° C./20 seconds, the flag FKM is set to 0.

80 seconds after the start of temperature measurement, (FKP, FK
When the set of (M) is (0,0), the prediction is established assuming that the predicted value is sufficiently stable. In the case of (1, 1), since there is a small increase and decrease, the prediction is continued as it is assuming that the group determined by the grouping is appropriate.

In the case of (1, 0), it is assumed that the predicted value is monotonically increasing (rising), and in the case of a group other than the fifth group, the group moves to a group (coefficient group) having a larger coefficient of addition. , Switch to the prediction coefficients for that group. At this time, the flag FK
Return both P and FKM to 0. Furthermore, after the start of temperature measurement, 80
A change in the predicted value is observed in the same manner for ~ 90 seconds, and if a monotonous decrease (decrease) is observed, the group is returned to the original state. In the case of (0, 1), the opposite processing to (1, 0) is performed.

However, even if grouping is performed, the endmost group (1
Group or five groups), the amount of addition cannot be adjusted in some cases. In such a case, the prediction value is corrected at the time of forced establishment (at the time of termination of prediction calculation).

FIG. 4 shows the state of correction when the forcible condition is satisfied (when the prediction calculation is terminated).

After grouping 40 seconds after the start of temperature measurement, if the predicted value of the group (5th group) having the largest added amount monotonically increases, the added amount cannot be further increased by moving the group. Therefore, a positive correction value is added at the time of forced establishment (90 seconds). The correction amount is a half of the change amount of the predicted value for 40 to 90 seconds, and the upper limit is 0.15 ° C. If the predicted value is monotonically decreasing in the group (1 group) with the smallest increase, the reverse is true.

As described above, if the predicted value changes greatly at the time of forced establishment, there is a danger that the error will increase if the predicted value is displayed as it is, and the predicted value is calculated again with reference to the past predicted value. Thereby, a display value with higher accuracy can be obtained.

FIG. 5 is a block diagram showing the configuration of the electronic thermometer.

The electronic thermometer according to the present embodiment measures the temperature and outputs the temperature as a digital value.
And an arithmetic control unit 20 that calculates the predicted temperature from the measured temperature and controls the electronic thermometer, and a display unit 30 that displays the measurement result on a liquid crystal or the like.

The temperature measuring section 10 includes a thermistor 13 and a capacitor 14 installed in a temperature sensing section connected in parallel,
According to the time constant of the thermistor 13 and the capacitor 14, a one-shot multi 15 that hits a one-shot,
A clock generator 11 for generating a reference clock; a frequency divider 12 for dividing the frequency of the reference clock;
And a counter 16 for counting the number of clocks from the clock generator 11 while the output of the counter 5 is High. The count amount of the counter 16 changes in accordance with the temperature of the thermistor 13 to output the temperature as a digital amount. I do.
The configuration of the temperature measuring unit 10 is an example, and the present invention is not limited to this.

The arithmetic control unit 20 includes a CPU 2 for arithmetic control.
1, a prediction formula storage unit 22a that stores a control program and stores a prediction formula used in the present electronic thermometer, a parameter storage unit 22b that stores coefficients (parameters) a, b, c, and d. A ROM 22 having a correction value storage unit 22c for storing a correction value at the time of establishment, and a flag FKP,
It comprises an FKM, a RAM 23 for auxiliary storage, and a RAM 23 for storing measured temperatures in time series, and performs operation control of the present electronic thermometer such as initialization, grouping, prediction calculation, and determination of establishment conditions according to a program.

Reference numeral 22d denotes first temperature holding means for holding the predicted equilibrium temperature value, and reference numeral 22e denotes second temperature holding means for holding the measured temperature value while updating it.

FIG. 6A is an external view of the main body of the electronic thermometer. The main body is a liquid crystal display (LCD) 3 corresponding to the display 30.
5, a case 2 and a tip metal cap 3 for transmitting the body temperature to the thermistor 13 in FIG. FIG.
(E) shows a display example of the liquid crystal display unit 30. The left and right display temperatures are a predicted equilibrium temperature value and an actually measured temperature value, respectively. For the predicted equilibrium temperature value, a bar 30a is displayed above ° C. as a means for indicating that fact. The temperature value is displayed with an accuracy of 0.01 ° C. (or ΔF), but may be displayed with an accuracy of 0.1 ° C. (or ΔF).

Means are provided for displaying and / or sounding the measured equilibrium temperature value and the measured temperature value so that the measurer can visually or audibly check the degree of reliability of the measured temperature value.

In FIG. 6B, the temperature display on the left is
To indicate that the predicted equilibrium temperature value has high reliability, a decimal point 30b and a bar 30a above ° C are also displayed. In the temperature display on the right side, a decimal point 30b is displayed to indicate that the measured temperature value has high reliability. The predicted equilibrium temperature value and the actually measured temperature value are alternately displayed at predetermined time intervals (for example, every 2 seconds) on the same display unit 30 so that the measurer can easily visually recognize the temperature value.

In FIG. 6C, the temperature display on the left is
A decimal point 30b and a bar 30a above ° C are displayed together to indicate that the predicted equilibrium temperature value has high reliability (validity). In the temperature display on the right, the decimal point 30b is not displayed to indicate that the measured temperature value has low reliability.

In FIG. 6D, the temperature display on the left side indicates that the predicted equilibrium temperature value has low reliability, and the decimal point 30b is not displayed. The temperature display on the right shows three decimal points to indicate that the measured temperature value has high reliability.
0b is displayed.

In FIG. 6E, the temperature display on the left side does not show the decimal point 30b to indicate that the predicted equilibrium temperature value has low reliability. The temperature display on the right also shows a decimal point 30 to indicate that the measured temperature value has low reliability.
b is not displayed.

FIG. 7 is an overall flowchart showing the operation procedure of the electronic thermometer. Here, the buzzer sounds when the condition for obtaining sufficient prediction accuracy is satisfied or the like, and informs the user.

First, when power is turned on by a predetermined start switch, for example, a reed switch or the like, initialization is performed in step S1. In step S2, the data from the temperature measurement unit 10 is stored corresponding to the passage of time. Step S
In step 3, it is determined whether or not the grouping has been performed. If it is determined that the grouping has not been performed, the grouping is performed 40 seconds after the start of the temperature measurement in step S4.

When coefficients (parameters) are set by grouping in step S4, a prediction calculation is performed based on a prediction formula in step S5, and it is checked whether or not the prediction establishment condition selected in step S6 is satisfied. .

If the conditions for establishing the prediction are not satisfied, the process proceeds to step S8, where the predicted temperature is displayed on the liquid crystal display (LCD) 30.
At step S9, and returns to step S2 from step S9 to continue the measurement. If the prediction is established, the process proceeds from step S6 to S
Proceed to step 7 to sound the buzzer that informs the establishment, and step S
Proceeding to 8, the temperature value is displayed on the LCD, and the process returns from step S9 to S2.

If grouping has been performed in step S3, the flow advances to step S10 to determine whether the group should be changed (moved). Step S1 for group change (movement)
In step 1, the group is changed (moved).

The equilibrium temperature prediction calculation is repeated until a predetermined time (90 seconds) elapses after the condition for ending the equilibrium temperature prediction is satisfied or the temperature measurement is started. The measurement of the actually measured temperature value is performed for a predetermined time (6 hours).
(00 seconds), but the measurement is also terminated when the thermometer is removed from the measurement site. FIG. 7 does not show the correction at the time of forced establishment, but can be realized by adding simple steps.

FIG. 8 shows the display of the predicted equilibrium temperature value and the actually measured temperature value, and whether or not those values were measured with high reliability is easily visually recognized (confirmed) by the measurer (user). It is a flowchart for enabling it.

In FIG. 8, at step S28, 600
It is determined whether or not seconds (10 minutes) have elapsed. If 600 seconds have not elapsed, the process returns to step S32, and the temperature value is displayed on the LCD 30.

On the other hand, if 600 seconds have elapsed, it is determined (determined) in step S90 whether or not the actually measured value has high reliability, and if it has high reliability (good actual measurement), In step S101, the buzzer sounds three times, and in step S91, it is determined whether the predicted equilibrium temperature value has high reliability (good prediction).

If the predicted equilibrium temperature value has high reliability (good prediction), the decimal point 30b is determined in step S93.
The equilibrium temperature predicted value in which is flashed (flashing) and the measured temperature value in which the decimal point 30b is lit (flashing) are alternately displayed (notified) at predetermined time intervals (for example, every 4 seconds). If the predicted equilibrium temperature value has low reliability (the prediction is not good), in step S94, the equilibrium temperature predicted value with the decimal point 30b turned off,
The measured temperature value with the decimal point 30b lit (blinking) is alternately displayed (notified) every predetermined time (for example, every 4 seconds). In step S90, it is determined (determined) whether or not the actually measured value has high reliability. If the actually measured value has low reliability (the actual measurement is not good), the buzzer is sounded once in step S111. In S92, it is determined (determined) whether or not the predicted equilibrium temperature value has high reliability (predictably good).

In step S90, the reliability judging means for judging the reliability of the actually measured temperature value includes the difference between the actually measured temperature value and the maximum temperature value based on the temperature rise rate of the actually measured temperature value, or the difference between the actually measured temperature value and the actually measured temperature value. If the difference between the temperature and the minimum temperature value based on the temperature rise rate is equal to or less than a predetermined temperature value (threshold), it is determined that the actually measured temperature value has high reliability. This threshold value is made different for each group, and a plurality of sections are provided according to the elapsed time after the start of the temperature measurement, and are made different for each section.

If the predicted equilibrium temperature value has high reliability (good prediction), the decimal point 30b is determined in step S95.
Is alternately displayed (notified) at predetermined time intervals (for example, every 4 seconds) at the equilibrium temperature predicted value where is turned on (flashing) and at the measured temperature value where the decimal point 30b is turned off.

If the predicted equilibrium temperature value has low reliability (the prediction is not good), in step S96, the equilibrium temperature predicted value with the decimal point 30b turned off and the measured temperature value with the decimal point 30b turned off are set at predetermined time intervals. (For example, every 4 seconds).

The reliability judging means for judging the reliability of the predicted equilibrium temperature value in steps S91 and S92 judges whether or not the prediction is established (forcibly not established) by 90 seconds.

After displaying these temperature values for a predetermined period of time (several seconds to several tens of seconds), the switch is turned off to end the process.

Although the present embodiment is an electronic thermometer for selecting a prediction formula based on grouping as an example of the equilibrium temperature prediction, the present invention is also applied to other prediction formula thermometers.

Further, display units for displaying the predicted equilibrium temperature value and the actually measured temperature value may be separately provided.

In this embodiment, the estimating operation is performed based on the elapsed time from the starting point of the temperature measurement. However, the estimating operation is performed based on the elapsed time from the starting point of the estimating operation. You may do so.

[0084]

According to the present invention, it is possible to obtain an electronic thermometer which displays two values, ie, a predicted equilibrium temperature value and a measured temperature value with high prediction accuracy, and displays them together with their reliability.

For this reason, even when the test subject's thermometer mounting method is defective or the measurement is in the middle of measurement, the measured temperature is low when the predicted equilibrium temperature value is low or the measured temperature value is low. The effect can be easily visually recognized.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating grouping of electronic thermometers according to the present embodiment.

FIG. 2 is a diagram illustrating an example of a temperature rise curve of the electronic thermometer of the present embodiment.

FIG. 3 is a diagram illustrating group movement of the electronic thermometer according to the present embodiment.

FIG. 4 is a diagram for explaining correction when the electronic thermometer of the present embodiment is forcibly established.

FIG. 5 is a block diagram illustrating a configuration example of an electronic thermometer according to the present embodiment.

FIG. 6 is a diagram showing an external perspective view and an example of temperature display of the electronic thermometer of the present embodiment.

FIG. 7 is a flowchart illustrating a procedure of group movement of the electronic thermometer according to the present embodiment.

FIG. 8 is a flowchart illustrating a procedure for determining the reliability of an actually measured value of the electronic thermometer according to the present embodiment.

[Explanation of symbols]

 10: Temperature measurement unit 20: Operation control unit 30: Display unit

Claims (7)

(57) [Claims] 1. A temperature measuring means, a grouping means for grouping a temperature rise tendency based on a temporal change of an initial temperature detected by the temperature measuring means, and a temperature measuring means for a predetermined period after the grouping. Group changing means for changing the grouping on the basis of a temporal change in temperature detected by the means, and an operation for calculating a predicted equilibrium temperature value based on data of the groups classified by the grouping means or the group changing means. Means, first temperature holding means for holding the predicted equilibrium temperature value calculated by the calculating means, second temperature holding means for holding the actually measured temperature value detected by the temperature measuring means, the temperature value and said actual measured temperature values an electronic clinical thermometer characterized by comprising a temperature informing means for informing alternately, the maximum temperature values based on the temperature rise rate of measured temperature values and the measured temperature
Difference or the measured temperature value and the temperature rise rate of the measured temperature.
The reliability of the measured temperature value based on the difference from the minimum temperature value
Reliability judgment means to judge, and a predetermined time from the measurement start point
Between the predicted equilibrium temperature value and the
Reliability judgment means for judging the reliability, wherein the judgment result by the reliability judgment means is obtained by measuring the measured temperature value and the prediction.
An electronic thermometer, which is displayed together with an equilibrium temperature value . 2. An electronic clinical thermometer according to claim 1, wherein said grouping means is divided into three or more odd groups. 3. The electronic clinical thermometer according to claim 1, wherein said grouping means divides the number into seven or more odd groups. 4. The apparatus according to claim 1, further comprising prediction value correction means for correcting the predicted equilibrium temperature value at the time of termination of the prediction calculation when the group change by said group change means is impossible. Electronic thermometer as described. 5. Change the Grouping by the group changing means, electronic thermometer according to claim 1, wherein the performed constant period or for each regular in the prediction calculation. 6. Change grouped by said group changing means,
2. The electronic thermometer according to claim 1, wherein the prediction is performed when the predicted value monotonically increases or monotonically decreases. 7. The change of grouping by the group changing means,
2. The electronic clinical thermometer according to claim 1, wherein the electronic thermometer is performed based on a temporal change over a predetermined period after the grouping by the group changing unit.