JPS58178233A - Electronic thermometer - Google Patents

Abstract

PURPOSE:To attain an electronic thermometor with a function of informing the lapse of measuring time which is simple in its construction and inexpensive by a method wherein a timer, a counting circuit and a lighting period control circuit are formed into a single integrated circuit and this integrated circuit is incorporated in a body, so that the lapse of measuring time may be informed by a lighting period of an indicator. CONSTITUTION:A symbol A denotes a switch signal for a switch 4. B, C and D are output signals from a timer 7, which are output in the form of pulse signals that issue a pulse at instances of time when 3, 5 and 10min have lapsed from turning-on of the switch signal A, respectively. E denotes output from a lighting period control circuit 8. More specifically, a signal (a) is output for 3min from turning-on of the switch signal A to issuance of the B signal, a signal (b) is output for a period from issuance of the B signal to that of the C signal, a signal (c) is output for a period from issuance of the C signal to that of the D signal, and a continuous ON signal is output after the D signal, i.e., after 10min has lapsed from turning-on of the switch signal A. For 3min from turning-on of the signal A to issuance of the signal B, the measured result is indicated while being turned on for 1sec and off for 3sec. Such longer lighting period than non-lighting period informs that the measuring time is not yet sufficient.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic thermometer that digitally displays temperature measurement results, and sometimes the temperature sensing element is inserted into a nursery school to be measured. It is used in electronic thermometers that notify by changes in the ratio of lighting periods.

As a conventional electronic thermometer, the temperature change in the temperature measurement result is monitored for a certain period of time to confirm that the temperature change has been corrected, and when there is no temperature change, it lights up continuously and then
Up to 10 flashing methods have been adopted. In this case, the user can confirm that the measurement is complete when the display is on a continuous basis, but generally the monitoring period is within 1 minute. There are many things.

However, when measuring the temperature of a living body's armpit, the temperature remains at 0.5 minutes even after 5 minutes have passed from the start of the measurement. The rise in IC/min has turned purple, and accurate measurements require 10 minutes.Since there has been no change in temperature for about 1 to 2 minutes, we fixed the display and stopped further measurements. H-Tadashi? There was an opening in terms of conducting second temperature measurements. Another conventional method is one that uses a buzzer to notify the time elapsed, but this one-type buzzer requires a buzzer and its oscillation circuit, and has the problem of significant battery consumption due to buzzer operation. there were.

An object of the present invention is to solve the above-mentioned smoke point problem in the prior art, and to provide a simple and inexpensive electronic body temperature needle with a measurement time elapsed reporting function.

The ninth feature of the present invention is that, in order to achieve the above object, timing is started and set by a switch signal that is turned on at the same time that the temperature sensing element is placed at the location to be measured. A timer that outputs the primary signal at the time of withdrawal, an Iftal path that converts the analog temperature If old signal detected by the temperature sensing element to digital No. 11 and outputs it, and this Irt number lPi circuit output. A liquid crystal display to display a lighting period control circuit that changes the ratio of the lighting period to the lighting period in accordance with the above-mentioned timer output signal, and these timers, counters (g circuits, and lighting period control circuits) are integrated into one. The thermometer is configured to be formed from a circuit and incorporated into the body of the thermometer.

Hereinafter, one embodiment of the invention will be described with reference to FIGS. 1 to 3. 1g is a perspective view of an example of the Naruko thermometer of the present invention;
FIG. 2 is a circuit block diagram, and FIG. 3 is a time chart of each No. 1 in FIG. In the drawing, l is a thermistor as a temperature sensing element, which is protected by an aluminum cap with good heat transfer coefficient.

Reference numeral 2 denotes a thermometer body, which is integrally molded with an aluminum cap part containing the thermistor 1. The body 2 of the 0-temperature needle has a plastic case as an exterior, and a battery, an integrated circuit, and peripheral circuits, which will be described later, are housed inside the case. A liquid crystal display 3 and a switch 4 are mounted on the upper surface of the case. Liquid crystal display 3 (Displays the temperature measurement result with digital blood donation.Suino 64 is an on/off switch for the temperature printing function. 5 in Figure 2 is a battery, which uses silver oxide or a pond. When the switch 4 is turned on and turned on, DC 3V is supplied to the boomister 1 and the integrated circuit.6 is 1
The ttili circuit receives the analog temperature signal detected by the thermistor, converts it into an digital signal, and outputs it. 7 is turned on by turning on switch 4.
This actual mflJ is a counter-type timer that starts at o'clock i, and outputs one pulse signal each at the elapsed time points of 3 minutes, 5 minutes, and 10 minutes. Reference numeral 8 denotes a lighting cycle control circuit which is controlled by the output signal of the timer 7 and outputs a signal for controlling the liquid crystal display 3. The above-described timer 7, counting circuit 6, and lighting cycle control circuit 8 are incorporated into one integrated circuit and disposed within the body temperature needle body 2.

The operation of this embodiment having the above configuration will be explained according to the time chart shown in FIG. A is switch No. 1i of the switch 4 in FIG. B, C, and D are the output signals of timer 7, respectively, and are 3 minutes and 5 minutes, respectively, from the time when switch No. 11 is turned on.

A single pulse signal is output after 10 minutes have elapsed. E is the output of the lighting Al#Jle circuit 8, and the signal a is used for 3 minutes from when the switch signal A is turned on until the generation of the B signal.
During the period from the generation of the B signal to the generation of the ChiI signal, it outputs the signal S, and during the period from the generation of the C signal to the generation of the D signal, outputs the partial 4C, and outputs the signal D111 h and rear r, that is, the switch signal. After 10 minutes have elapsed since A was turned on, a continuous on signal is output.

Ministry of Education is +! Switch 4 is turned on prior to reaching the lt temperature. Place the ¥+thermometer at the location to be measured and then switch 4.
Although it is possible to measure the test time more accurately by turning on the switch, it is only used as a reference to notify the passage of time, and from the viewpoint of operability, there is no problem in operating the switch immediately before insertion. For 3 minutes from the time signal gA is turned on to the time signal B is generated, horizontal results are displayed at a cycle of 1 second on and 3 seconds off, as shown in an enlarged view of signal a. Since the period when the lights are turned off is more visible than the period when the lights are on the display, the user is led to believe that the fixed time for greetings is not the name of the era. For 3 to 5 minutes, the signal expands and becomes boiling with a cycle of 1 second off and 1 second off, such that tf <'f.1 From this, you can tell that it is a general measurement time. can.

If you want to take a longer temperature measurement time, pull out the Naruko thermometer from the area to be measured within 5 to 10 minutes after turning the switch, and when reading the temperature, set it to 1.5 as shown in the figure. Since it is displayed at a cycle of 0.5 seconds on and 0.5 seconds off, you can know that the relatively low FtfmJ time threshold has passed without looking at the clock. Also, after operating switch 4, 1
After 0 minutes have elapsed, it is displayed continuously, so you can know that the measurement time is sufficient.

In the above embodiment, the time point at which the timer output occurs is set to 3 minutes,
5 minutes and 10 minutes, but 30 seconds and 45 seconds in order to correspond to the sublingual temperature measurement that is common in Europe and America.

Even if the output is generated at the time of 1 minute, the same effect can be obtained, and the present invention is not limited to the time point at which the timer output is generated.
The minute signal br had a cycle of 11 seconds on and 1 second off,
This may also be, for example, a cycle of 0.5 seconds on and 0.5 seconds off, or a cycle of 2 seconds on and 2 seconds off.

That’s 6! As explained above, according to the present invention, it is possible to know the one-edge threshold from the lighting cycle of the display, so it is possible to prevent inaccurate measurements due to insufficient elapsed time. Since the six indicators that display the measured value simultaneously provide time information, there is no need to provide a separate timer display, and the temperature measurement result and elapsed time can be displayed on one display. It has the advantage of eliminating the difficulty of continuing when the lights are turned on and off, and compared to conventional thermometers with a time elapsed alarm function using a buzzer, there is no need for a buzzer and its silk-generating circuit. Since there is no wear and tear, the number of components can be kept to a minimum, making it possible to create a cheap thermometer. Also, since the light remains off for a long time until the specified time, Mi4 forces the user to take their temperature for a certain period of time.
This allows accurate temperature measurement.

[Brief explanation of drawings]

41 is a perspective view of an embodiment of the present invention, FIG. 2 is a block circuit diagram of an embodiment of the present invention, and FIG. 3 is a time chart of each signal in FIG. 2. 1... Thermistor, 2... Body temperature body, 3... Liquid crystal display, 4... Changeover switch, 5... Battery, 6
・・・Several times diamond 2nd figure, yg7J millioni

Claims (1)

[Scope of Claims] 1. A timer that starts timing with a switch signal that is turned on at the same time as a temperature sensing element is inserted into a defined location and sequentially outputs signals at a plurality of set time points; A counting circuit that converts the analog temperature signal detected by the temperature sensing element into a digital signal and outputs it, and a liquid crystal display that displays the output of this counting circuit. The ratio of the lighting period to the turning-off period is changed in accordance with the timer output signal. Lighting cycle side #IP!
l#! 1, the above-mentioned timer, counting circuit and lighting frequency A.
An electronic body temperature needle in which a control hook circuit is formed by a single circuit and is incorporated into the body of the body temperature needle. 2. The lighting period control circuit outputs the timer output 11! I
Later output 11 according to the order of occurrence of the issues! The electronic thermometer according to item 1 of the scope of Haruyuki Funako, wherein the liquid crystal 6 has a lighting cycle 1IIl-circuit that increases the allocation of the lighting period to the lighting period of the book according to the number.