JPS6385322A - Graphic clinical thermometer - Google Patents

Abstract

PURPOSE:To obtain a clinical thermometer suitable for family planning requiring continuous data, by successively storing body temp. data at each time when body temp. is measured and displaying the history of said body temp. data on LCD (liquid crystal display device) in a graphic state. CONSTITUTION:When CPU4 detects that a set switch 8 is pushed, body temp. data is written in RAM6 and, at the same time, the address showing the data of LCD7 indicated by software is selected through I/O3. The address of body temp. is indicated on the basis of the data obtained by applying logical processing to the body temp. by CPU 4 and plotting is applied to said address. The scanning of LCD7 is always performed and the body temp.written in the address of the body temp. data of RAM6 is always written at each time when scanning is performed.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to the improvement of a thermometer that measures a subject's body temperature using electronic action, and which collects body temperature data at each sinus time of the subject. The present invention relates to a thermometer that stores body temperature data and displays the history of this body temperature data in a graph.

(Background of the Invention) Thermometers that measure body temperature are often constructed using mercury. However, with the advancement of electronic technology in recent years, there are also methods that use electronic functions to measure body temperature using various sensors and display the subject's body temperature numerically on a liquid crystal display (hereinafter referred to as LCD). It has become very easy to measure body temperature. Temperature readings are also used for family planning, and thermometers have traditionally been used very frequently.

(Problem to be solved by the invention) Both conventional mercury-based thermometers and electronic thermometers are designed to measure body temperature only during temperature measurement, so continuous measurement data cannot be obtained. For example, when measuring body temperature for family planning purposes, subjects had to record their body temperature on a recording sheet each time.

An object of the present invention is to provide a graphic thermometer that can sequentially store body temperature data for each body temperature time and display the history of this data in a graph on an LCD.

(Means for Solving the Problems) In order to achieve the above object, the graphic thermometer of the present invention measures the body temperature of the subject by being placed at an appropriate part of the subject and outputs an analog signal proportional to the body temperature. an analog/digital conversion section that converts an analog signal from the sensor section into body temperature data in the form of a deftal signal; a liquid crystal display having a predetermined display function; and a body temperature data output from the analog/digital conversion section. and a control unit that processes and stores various types of data and controls the liquid crystal display, and the liquid crystal display displays the history of the body temperature data for each measurement of the subject in a graph form. It is configured to do this.

(Function) In the present invention, the analog signal sent from the sensor unit is converted into digital signal body temperature data in the analog/digital conversion unit (hereinafter referred to as A/D), and the body temperature data is sent to the control unit. The history of this body temperature data is displayed on the LCD in the form of a graph.

(Example) Hereinafter, one example according to the present invention will be described in detail based on the drawings.

FIG. 1 is an external view of this embodiment, FIG. fjS2 is an explanatory diagram showing the display state of the LCD section, and FIG. 3 is a block diagram.

First, the configuration of the present invention will be explained based on FIG.
It consists of a ROM (5), a RAM (6), and a central processing unit (4) (hereinafter referred to as a CPU).

The graphic thermometer of the present invention includes a sensor unit that measures the body temperature of a subject and sends out analog No. 43 proportional to this body temperature, an A/DZ that converts the analog signal into digital signal body temperature data, a CPU (4), etc. LCD (7) that displays the history of the configured control unit and body temperature data in a graph.
).

The sensor part (1) is a PT for measuring the subject's body temperature.
, temperature transducer, and other sensors. Then, physical changes in response to body temperature, such as changes in resistance in the case of a PT, changes in current or voltage in the case of a temperature transducer, are converted into analog signals proportional to body temperature and sent to the next stage A/DZ. The structure is as follows.

In this example, the sensor of the sensor unit (1) is constructed of a PT and a temperature transducer. However, when measuring the body temperature of a subject, the sensor is a sensor that obtains linear physical changes in response to changes in body temperature. If there is, it is not limited to waiting.

In addition, the range of the subject's body temperature measurement is, for example, 35°C ~
Since it can be carried out over a small span of 41°C, various sensors can be used. This measurement span can also be determined as appropriate, and is not limited to the measurement span of this embodiment.

The sensor of the sensor section (1) is normally constructed at the tip of the main body, as shown in Figure P/S1. The A/DZ has a function of converting the analog signal sent from the sensor section (1) into a digital signal of an appropriate number of bits and forming it as body temperature data. The conversion speed of this A/DZ is
Since high speed is not required, an inexpensive double integral type can also be used. It goes without saying that the main body temperature data, which is a 7-ohm digital signal, can be used for either parallel output or serial output.

I10(3) has a control function for various input/output data, and collects rice body temperature data sent from the A/DZ.
It has a function of transmitting data to the CPU (4) under the control of the PU (4).

The CPU (4) has a control function for various internal devices, operates with software written in the ROM (5), processes body temperature data, and writes and reads body temperature data to the RAM (6). Let's do it. Also, CPU (4)
When the set signal from the set switch (8) (hereinafter referred to as SW) is input via l10 (3), the RA
It has a function of writing data to M(6) and LCD(7).

The RAM ((3) is used to store data during logical processing by the CPU (4) and to store body temperature data.

Regarding this body temperature data, after the subject measured his body temperature, he judged that the body temperature data measured this time was valid and 5W (8)
When the key is pressed, body temperature data is sequentially written into the RAM (6), and body temperature data is sequentially stored and attached to a predetermined memory address. In this embodiment, 31 addresses are assigned to the RAM considering that the maximum number of days in a month is 31 days. That is, if the subject does not measure body temperature once a day and presses 5W (8) once, 31 days worth of body temperature data is stored in RAM (6). In other words, the history of body temperature data for 31 days is R.
It is configured to be stored in AM (6). In this embodiment, CPU (4), l10 (3), ROM (5) and 1.
Although we have explained the case where the control section composed of l'RAM (6) is composed of individual chips, it is also possible to use a one-chip CP in which various devices constituting these control sections are built-in.
By using U, manufacturing costs can also be reduced. In addition, if the processing power of the control section is not so necessary, it is possible to form it using various discrete components, but this not only complicates the circuit configuration but also requires a large amount of mounting space. Because a layer is formed, it is actually C
A configuration using PU (4) would be preferable.

The LCD (7) is composed of a liquid crystal having a graphic function, and is controlled by the CPU (4) via the l10 (3).

This LCD (7) has RAM (6) as shown in Figure 2.
The history of the body temperature data stored in the body is displayed in the form of a line graph, and the history of the body temperature data of the subject can be relatively shown.

The body temperature data is written on the LCD (7) by the subject pressing 5W (8). In other words, the CPU (4) indicates that 5W (8) has been pressed.
) is detected, it writes the body temperature data to the RAM (6) and at the same time displays the temperature data on the LCD (7) as instructed by the software.
) in the X direction (address indicating the day) as l10(
3) and then transfer the body temperature data to CPtJ (
The address in the Y direction (address of body temperature) is designated by the data logically processed in step 4), and the program is performed at that address. Scanning of the LCD (7) is always performed, and the body temperature data written in the body temperature data address of the RAM (6) is always written whenever scanning is performed. A reset switch (not shown) is used to reset the CPU (4),
The RAM (6) can be initialized by pressing the reset switch.

In this embodiment, the graphic is a line graph, but it is also possible to display it in the form of a bar graph.

In addition to simply displaying a graph, body temperature data can also be easily displayed as a numerical value on the LCD.

(Effects of the Invention) As is clear from the above description, the graphic thermometer according to the present invention measures the body temperature of a subject using electronic functions, sequentially stores body temperature data, and displays the history of this body temperature data on the LCD. Since it is configured to display in a graph form, it has become extremely useful as a thermometer for family planning and other purposes where continuous data is required.

[Brief explanation of the drawing]

FIG. 1 is an external view of an embodiment of the present invention, FIG. 2 is an explanatory diagram showing the display state of the LCD section, and FIG. 3 is a block diagram thereof. In the figure, (1)...sensor section, (2)...A/D, (
3)...Ilo, (4)...CPU, (5)...
ROM, (6)...RAM, (7)...LCD. Figure 1 Figure 3

Claims (1)

[Claims] A sensor section that measures the subject's body temperature by being placed at an appropriate part of the subject and sends out an analog signal proportional to the body temperature, and an analog that converts the analog signal from the sensor section into digital signal body temperature data. / has a digital conversion section, a liquid crystal display having a predetermined display function, and a control section that performs various data processing and storage of the body temperature data from the analog/digital conversion section and controls the liquid crystal display. A graphic thermometer characterized in that the history of the body temperature data for each time of measurement of the subject is displayed in a graph on the liquid crystal display.