JPS6183925A - Electronic thermometer - Google Patents

Abstract

PURPOSE:To elevate the reliability of the body heat judgment processing, by prohibiting the judgment processing of the measuring temperature only for a fixed time from the specified starting time of temperature inspection. CONSTITUTION:When a power source switch is turned ON, and A/D converter 3 converts the output of a temperature sensor 2 into a digital signal to be applied to a microprocessor 1. After the closing of a power source, when the measuring temperature rises sharply before the timer passes a fixed time point t2 set therefor, the sharp rise thereof is detected to be the temperature inspection starting time and confined to the fixed time t1 set by the timer, the judgment on the convergence of the temperature measurement is inhibited. After the time expiration output is generated in the timer, the judgment on the convergence is started to detect the rate of change, which is compared with the decision rate to determine the convergence. When the heat transmission to a thermosensitive element is bad after three minutes passes from the setting of a temperature measuring probe because of the wrong way of measuring temperature by a subject person, the time expiration output is generated in the timer. Thus, alarm tone is generated to the effect of being abnormal from a buzzer 6 or an indication is given on a display 5 to such an effect to inform of the abnormality.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electronic thermometer that determines the convergence value as the body temperature of a stone to be measured based on the convergence of the measured temperature.

(Prior art and its problems) In this conventional electronic hand thermometer 1, the measured temperature r(
As soon as the temperature converges, this is immediately determined to be the body temperature of the person being measured.

In this case, if the measured temperature rises slowly due to poor measurement method, or if the temperature measurement probe has come off during the measurement, or if the temperature measurement probe has come off during the measurement, the error may occur due to temperature measurement convergence. There was a problem in that the body temperature was determined by the system, and the measured value was lower than the actual body temperature.

(Objective of the Invention) The present invention has been made in view of the above problems, and its purpose is to improve the reliability of body temperature determination processing in this type of electronic thermometer.

(Structure and Effects of the Invention) In order to achieve the above object, the present invention provides an electronic body temperature system that determines the convergence value as the body temperature of the person to be measured based on the convergence of one temperature measurement vessel. v1 is characterized in that the determination process is prohibited only for a certain period of time from the start of a predetermined temperature measurement.

With this kind of configuration, even if the measurement method is difficult,
Or, even if the temperature measurement converges due to the temperature measurement probe coming off during the measurement, the point of convergence before a certain period of time after the temperature measurement is completed is before the expiration time for convergence judgment. Since the convergence determination is performed after a certain period of time has elapsed and the difference between the body lag and the measured temperature is resolved over time, erroneous body temperature determinations can be prevented.

(Description of Examples) FIG. 2 is a block diagram showing the configuration of an electronic thermometer to which the present invention is applied.

At 83 in the same figure, the microprocessor 1 performs an overall control, and as described later, based on the fact that the measured temperature has converged, the microprocessor 1 processes the convergence value to determine that it is the body temperature of the subject. It is something.

The temperature sensor 2 converts the body temperature of the person to be measured into an analog electrical signal based on the resistance change of a temperature sensing element such as a thermistor, and converts the body temperature of the person to be measured into an analog electrical signal. It is added to vessel 3,
Usually, a temperature sensing element is provided in a part called a temperature probe.

The moxibustion device 3 converts the output of the temperature sensor 2 into a digital signal and applies it to the microprocessor 1.

The storage area 4 serves as a storage area for processing data of the microprocessor 1.

Display 5. The buzzer 6 responds to the determination processing by the microprocessor 1 and provides notifications such as display and alarm occurrence.

Further, when the power switch 7 is turned on, the drive power 8 is supplied to the microprocessor 1, and the microprocessor 1 becomes inactive during the determination process.

In such a configuration, the microprocessor 1 performs determination processing according to the flowchart shown in FIG.

The step following the initial cell processing in step (101) (
In step 102), the process waits for the power switch 7 to be turned on.

When the power switch 7 is turned on, timer T2 is started. This timer T2 is used to issue an abnormality alarm if there is no rapid rise in temperature measurement for 3 minutes or more (step 108 affirmative).

If the sample timing has arrived in the subsequent step (104), the output data of the Δ/D converter 3 is read in the subsequent step (105).

In the following step (106), the read data is
1. Display the measured temperature on the display 5.

In the subsequent warm-up (107), it is determined whether or not the temperature measurement flag is set, and if it is not set, the routine proceeds to step (100) and subsequent steps.

In step (10'8), it is determined whether or not the measured temperature has suddenly increased. If the measured temperature has not reached 2 degrees, it is determined that the temperature measurement has not yet started, and the following step (109)
) At iron turn T, it is determined whether the time-up output is -1 or not, and whether 1123 minutes have elapsed since the #5 power was turned on.

If the timer T2 does not generate a time-up output, the process returns to step (104) and continues until the timer T2 generates a time-up output.
9) is repeated.

On the other hand, if 3 minutes have passed after the power is turned on and a time-up output occurs in timer T, then the following step (,1
At step 10), an abnormality notification is made, such as generating a notification sound from the buzzer 6 and displaying an abnormal line on the display 5, and the process ends.

In other words, if the temperature measurement method by the person being measured is poor and heat transfer to the temperature sensing element is poor even after 3 minutes have passed since the sensor 1- of the temperature measuring probe, a time-up output is generated in timer T2. , the process ends without performing a convergence determination.

On the other hand, before the timer T2 outputs a time-up, if it is determined in step (108) that the measurement 4a is taking a breath, it is determined that the temperature measurement has started, and in the following step <111). The temperature measurement flag is set.

By setting this flag during temperature measurement, the following step (11
In 2'), a timer T1 (for example, 3 minutes) is set to prohibit convergence judgment for a certain period of time after the upper limit of D of the measured temperature.
is started.

Therefore, even if the temperature measurement converges due to poor measurement method or temperature measurement probe coming off during the measurement, the target time for convergence judgment will be reached before the set time of timer T1 has elapsed. Therefore, the convergence determination will be made at the intercostal space after the process in which the difference between the IA temperature and the measured temperature is resolved over time at the elapse of the set time 1 to 2 of the timer T. Timer “1’s Origin” JIJ
For lfi, return to step (104).

In this way, in step <107) after passing through steps (104) to (106), it is determined that the measurement flag has been set to 1, so in the routine after step (113), the time-up output is sent to timer 1-1. The convergence determination is prohibited for a certain period of time until the occurrence of the problem, and the convergence determination is performed after the certain period of time has elapsed.

That is, in step (113), it is checked whether or not timer T1 has timed up, and steps (104) to (113) are repeated until timer T has timed up.

Steps that follow after timer T1 times out (114)
It is determined whether the rate of change in the measured temperature has converged to a constant value or less, and steps (104) to (114) are repeated until the rate of change in the measured temperature has converged to a constant value or less.

Is the rate of change in measured humidity constant? If it is determined that the temperature has converged to + or higher, in the following step <115), a notification sound is generated from the buzzer 6 to indicate that the body temperature of the person to be measured has been detected, and a message is displayed on the display 5. The process ends when a convergence notification is made to show the blind person whose body temperature is the detected value.

In short, in this embodiment, as can be seen from the time-temperature characteristic curve with the measured temperature as a parameter as shown in FIG. The fixed time set in T2 ([2
), when the measured temperature rises rapidly, this sudden rise is detected and taken as the time to start temperature measurement, and the timer starts 1° from the time the temperature measurement starts.

It is prohibited to judge temperature measurement convergence only for a certain period of time until the specified time (t,) has elapsed, and under the timer,
After the time-up output is generated, the convergence determination is performed starting from m1, the rate of change is detected, and the rate of change is compared with the determination rate to determine convergence.

Further, when a time-up output occurs in the timer T1, an abnormality notification is performed.

This configuration according to the present invention is installed, for example, in a thermometer main body 9 as shown in FIG. 4. In FIG. 4, reference numeral 10 is a temperature measuring probe that houses a temperature sensing element of r'6 temperature sensor, and the same parts as in FIG. 2 indicate the same convenience.

As described above, in this embodiment, if the measured temperature does not rise rapidly within a certain period of time (2-3 minutes) after detecting the moment when the power switch is turned on, an abnormality alarm is issued. At the same time, a certain period of time ([.

- 13 minutes), it is prohibited to make a convergence judgment only for 13 minutes), which prevents abnormal situations in which it is determined that the temperature has converged when the measured temperature is lower than the actual body temperature of the person being measured. can do.

Therefore, the electronic thermometer to which this invention is applied has high reliability in determining convergence.

In addition, in the example in which the temperature reached 1, the time when the temperature measurement suddenly increased was taken as the temperature measurement start time, but the function of the timer T was omitted.
The time when the power switch is pressed is the time when the temperature measurement starts, and the determination process is prohibited for a certain period of time until the timer T2 time-up output occurs. It is also possible to make it l-.

[Brief explanation of the drawing]

Fig. 1 is a flowchart showing the determination processing algorithm of an electronic thermometer to which the present invention is applied, Fig. 2 is a flowchart showing the configuration of an electronic thermometer that operates according to the flowchart of Fig. 1, and Fig. FIG. 4 is a time-temperature characteristic curve diagram showing the operating status of the invention. FIG. 4 is a top view of an example of an electronic thermometer equipped with the configuration according to the invention. 1...Microprocessor 2...Temperature sensor 3...△/D converter 4...Member 5...Display unit 6...B17" + 7...Power switch 8. ...Drive Ti source 13th edition Applicant: Tateishi Electric Co., Ltd. Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] (1) In an electronic thermometer that determines the convergence value as the body temperature of the person to be measured based on the convergence of the measured temperature; the determination process is prohibited only for a certain period of time from the start of a predetermined temperature measurement. An electronic thermometer featuring