JPS61271432A - Electronic clinical thermometer - Google Patents

Abstract

PURPOSE:To enable a body temperature measurement to be properly performed by detecting a temperature change for a predetermined time after the commencement start of the measurement and detecting the approximate body temperature from the detected temperature and the temperature change at the time when the temperature change is detected. CONSTITUTION:A temperature detector 1, measurement start detecting means 2, temperature change detecting means 3 for detecting a temperature change after a predetermined time from the start of the measurement, decision means 4 for estimating and deciding an approximate body temperature from the detected temperature and the temperature change when this is detected and display means 5 for displaying the approximate body temperature at that time are provided. When the predetermined time has elapsed after the measurement is started, the detector 1 detects the temperature at that time and the means 3 detects the temperature change. From these detections, the means 4 estimates and decides the approximate body temperature (normal temperature, mild fever, high fever) and this approximate body temperature is displayed on the means 5. By viewing the display of the approximate body temperature, it can be recognized how long the measurement may be continued.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to an electronic thermometer, and particularly to a notification mechanism for notifying measurement time.

(b) Conventional technology Generally, some electronic thermometers have a body part and a probe part formed separately, and the probe part is held under the armpit etc. to detect body temperature, and the detection signal is is processed in the main body and displayed on the display. Furthermore, if a fight occurs for a predetermined period of time after the start of measurement, an end buzzer is activated to notify the end of the fight.

(c) Problems to be Solved by the Invention In the electronic thermometer described above, the end buzzer is always activated after a certain period of time has elapsed, so the displayed temperature when the buzzer is activated is lower than the focused body temperature. And normal temperature
When measuring low-grade fever and high-grade fever, the measurement is terminated after a predetermined period of time, even though the temperature rises over time, so more appropriate body temperature measurement may not be possible. In other words, if the temperature is normal, if the measurement value is obtained after a certain period of time, even if there is a slight increase, it will not affect the judgment that the temperature is normal, but in the case of a slight fever, severe measurement is required. If you end the measurement in the same time as when the temperature is normal, even if the measured value at that point is close to normal, it may be judged as a slight fever due to a slight increase in temperature. The problem was that it could not be done.

On the other hand, in the case of a high fever, the rise is sudden and the measured value quickly reaches the high fever level, so if you wait for the same measurement time to elapse as in a normal temperature, it will take more time to measure than necessary. There was a problem.

In view of the above, it is an object of the present invention to provide an electronic thermometer that can appropriately measure body temperature in response to each state of body temperature, such as normal temperature, slight fever, and high fever.

(d) Means and operation for solving the problems As shown in FIG. Temperature change detection means 3 for detecting subsequent temperature changes; determination means 4 for predicting and determining approximate body temperature from the detected temperature and temperature change at the time of detecting this temperature change; and a display for displaying the determined approximate body temperature at that time. It is characterized in that it includes means 5.

Therefore, the electronic thermometer of this invention, after starting measurement,
After a predetermined period of time, for example 3 minutes, the temperature detector 1 detects the temperature at that time, the temperature change detection means 3 detects the temperature change, and based on these detections, the determination means 4 determines the approximate body temperature,
For example, a normal body temperature, a slight fever, and a high fever are predicted and determined, and this approximate body temperature is displayed on the display unit 5. The measurer can see this approximate body temperature display and know how much longer the measurement should be continued.

(e) Example An example of the present invention will be described in detail below with reference to the drawings.

As shown in FIG. 2, reference numeral 10 is an electronic thermometer in which a main body part 11 and a probe part 12 are formed separately.

Although not shown, this main body 11 has a built-in power supply, a microcomputer, etc., and the slide switch 1
3 and a display section 14 are provided. The slide switch 13 is an optional operation switch, and the display section 14 is composed of a main display section 14a and a sub-display section 14b. The main display section 14a displays the measured body temperature as, for example, "3760°C", and the sub-display section 14b is configured to display the approximate body temperature in three stages: "normal temperature", "slight fever", and "high fever". ing.

The probe section 12 is connected to the main body section 11 via a cord 15, and although not shown, a temperature sensor is built into the tip, and the probe section 12 is held in the armpit or the like to detect body temperature. .

The temperature sensor is connected to a microcomputer in the main body 11 so that the detection signal is processed.

Next, the configuration and measurement operation of this electronic thermometer 10 will be explained based on the control flow shown in FIG. 4.

Note that the step is called ST.

First, when the probe section 12 is held under the armpit or the like and the slide switch 13 is turned on, it is initialized in ST1, the start flag is set to 1, the process moves to ST2, and the process waits until the sampling time. and,
At each sampling time, the signal from the temperature sensor in the probe section 12 is converted into A/D and the detected temperature is read (
ST3), and displayed on the main display section 14a (ST4).

Next, the process moves to ST5, and after detecting the rate of change dT/dt of the detected temperature, it is determined whether the start flag is O or not (ST
6). When this start flag is 0, the process moves to ST7, it is determined whether or not a start is detected, and the process returns to ST2 until a start is detected, and the above-mentioned operation is repeated.
8, the start flag is set to 1 and a flag is raised. ST7 and ST8 are the measurement start detection means 2, and this start detection is performed at a rate of change dT/dt>
0, which is the time tl shown in Figure 3,
This is the point at which the detected temperature begins to rise.

When this start flag is set, the process returns to ST2, repeats the above operation, detects the rate of change dT/dt, and moves from ST6 to ST2.
The process moves to T9 and waits until a predetermined time t0 has elapsed. This predetermined time t0 is set to, for example, 3 minutes from the measurement start t, and the detected temperature increases as shown in A, B, and C depending on the person being measured, as shown in FIG. 3, and the sampling time ( The detected temperature is updated every time Sr1), and the main display section 14
a (Sr4), and the rate of change dT/dt is detected (Sr1). Then, when a predetermined time t0 has elapsed, the rate of change dT/dt at time t0 is calculated from Sr1 and Sr9.
is specified (temperature change detection means 3), and the process moves to 5TIO.

In this 5TIO, an approximate body temperature T is calculated, and this body temperature T is, for example, T = TX + dT/dtx t + TX :Temperature at time t0, 1, :1. After 5 minutes, for example, the setting is calculated, and the heat determination is performed at 5TII (judgment means 4). This fever judgment is divided into three types: when T≦37.0, the normal temperature corresponds to Figure 3 A;
When 0<T≦38.0, there is a slight fever, which corresponds to Figure 3 B, and T >
38.0 is a high fever and corresponds to Figure 3 C. Therefore, at 5T11, it is determined whether the temperature is normal A, slight fever B, or high fever C.

After that, the process moves to 5T12, and a heat display is performed (display means 5). That is, the sub-display section 14b lights up to display either "normal temperature", "slight fever" or "high fever", for example, as shown in FIG. 2, as shown in FIG.

At this point, "37.0° C." is displayed on the main display section 14a, and "slight fever" is displayed on the sub-display section 14b.

The measurer watches this display and determines the measurement time, which is longer if the patient has a mild fever and shorter if the patient has a high fever.

After this measurement, when the slide switch 13 is turned off, the measurement operation ends.

In this example, the fever is determined as "normal" or "slight fever."
Although we have set the level to 3 (high fever), it may be set to 4 or more levels.

Further, although the sub-display section 14b is shown as a text display, it is of course possible to use a graphic display or the like.

(F) Effects of the Invention As described above, the electronic thermometer of the present invention detects the temperature change for a predetermined time after the start of measurement, and detects and displays the approximate body temperature from the detected temperature at this point and the temperature change. Because of this, for example, it is possible to know at an early stage whether there is a "normal temperature" or "slight fever", and the measurement time can be adopted according to the thermal condition, so in the case of a slight fever, it is possible to measure for a sufficiently long time. Therefore, measurement accuracy and reliability of measurement can be improved.

Furthermore, in the case of a high fever, the measurement can be ended early, so that the measurement can be carried out quickly.

[Brief explanation of drawings]

Fig. 1 is a block diagram of an electronic thermometer of the present invention, Figs. 2 to 4 show an embodiment of the invention, Fig. 2 is a plan view of the electronic thermometer, and Fig. 3 is a measurement time FIG. 4 is a control flow diagram of the electronic thermometer. 1: Temperature detector, 2: Start detection means, 3: Temperature change detection means, 4: Judgment means, 5: Notification means, 1
0: Electronic thermometer, 11: Main unit, 12 Nibrob section, 13 Nylide switch, 14: Display section, 14a: Main display section, 14b
:Sub display area.

Claims (1)

[Claims] (1) An electronic thermometer consisting of a main body part and a probe part, in which body temperature is detected by the probe part and displayed on the main body part, which includes a temperature detector, a start detection means for detecting the start of measurement, and a start detection means for detecting the start of measurement. A temperature change detection means for detecting a temperature change after a predetermined time after the temperature change has started; a determination means for predicting and determining an approximate body temperature from the detected temperature and the temperature change at the time of detecting the temperature change; An electronic thermometer comprising display means for displaying a display.