KR20040085457A - Pregnancy self-test apparatus and method - Google Patents

Abstract

PURPOSE: An apparatus and a method are provided to achieve improved portability of the apparatus and allow for ease of test through the use of a saliva sensor. CONSTITUTION: An apparatus comprises a micro constant current supply unit(140); a saliva sensor(150) for receiving constant current from the micro constant current supply unit, sensing the electrical resistant value of the saliva generated from the mouth of an examinee by using a sensor electrode, and outputting micro voltages as a result of sensing; a signal amplifying and buffer unit(160) for amplifying and buffering the micro voltages output from the saliva sensor, and outputting the buffered voltage; a reference voltage set unit(130) for setting a reference voltage for putting, into a digital format, the voltage output from the signal amplifying and buffer unit; a micro computer(170) for sampling the voltage output from the signal amplifying and buffer unit, converting the sampled digital signal into a resistant value, determining an expected ovulation period by comparing the resistant value and the stored resistance value for menstrual cycle, and determining whether it is a pregnancy period; and a display unit(180) for displaying the result of determination in accordance with the display control signal.

Description

Pregnancy self-test apparatus and method

The present invention relates to detecting the saliva of a woman who is a test subject to determine the pregnancy time (period of pregnancy), and in particular, after sensing the electrical resistance of the saliva (acupuncture) produced in the woman's mouth with a sensor Pregnancy self-diagnosis device and method for judging whether pregnancy time or infertility by self-determining whether ovulation period is changed based on the cycle and displaying the results of pregnancy status by lamp or warning sound will be.

Conventionally, there was a method of checking the change in basal body temperature to check the pregnancy period or infertility period during the menstrual cycle of the woman, which means that the body temperature is lowered at the end of the menstrual period, and when the ovulation occurs, the body temperature is reduced. It is using physiological phenomena that rise.

In addition, there is another method of determining whether or not the change in the adhesion of vaginal discharge of women, which uses the physiological phenomenon that the fertilization rate increases as the adhesion of the secretion increases.

However, the former method is cumbersome because the woman herself has to continuously measure the basal body temperature every day, and the latter method is very difficult to judge without professional knowledge.

Accordingly, the present invention has been proposed to solve various problems occurring in the conventional method for determining the pregnancy time as described above,

An object of the present invention, after detecting the electrical resistance value of saliva (acupuncture) produced in the woman's mouth with a sensor to determine whether the ovulation period is changed on the basis of the menstrual cycle (menstrual) cycle to determine the results of the lamp or The present invention provides a pregnancy self-diagnosis apparatus and a method thereof, by which a warning sound is displayed so that a pregnancy or infertility can be judged by oneself.

"Pregnancy period self-diagnosis apparatus" according to the present invention for achieving the above object,

A fine constant current supply unit for supplying a fine constant current;

A saliva detection sensor which receives a constant current from the fine constant current supply, detects an electrical resistance value of saliva produced in the mouth of a female under test using a sensing electrode provided, and outputs a fine voltage as a result;

A signal amplification and buffer unit which amplifies the fine voltage output from the saliva detection sensor to a predetermined level, and buffers and outputs the buffered voltage;

A reference voltage setting unit for setting a reference voltage (sampling voltage) for digitizing the signal output from the signal amplification and buffer;

After sampling the voltage output from the signal amplifying and buffering unit with the reference voltage set by the reference voltage setting unit, the sampled digital signal is converted into a sensing resistance value, and the sensing resistance value is built-in by the menstrual period of the examinee (date) (I) a microcomputer (microcomputer) for determining an ovulation scheduled date by analyzing resistance and comparison, and for determining whether a test subject is pregnant based on the scheduled ovulation date;

And a display unit for visually displaying the determination result according to the display control signal output in correspondence with the result determined by the microcomputer.

"Pregnancy period self-diagnosis method" according to the present invention for achieving the above object,

Performing initialization when power is supplied;

If saliva is detected after initialization, extracting the electrical resistance of the saliva;

The electrical resistance value of the extracted saliva is converted into a minute voltage by an electrical circuit, stored in advance as an HEX value in internal memory, and compared with the electrical resistance value of each subject's menstrual cycle (by date) to determine the scheduled ovulation date, and the scheduled ovulation date. Determining whether a pregnancy time of a subject is measured;

And displaying the determination result on a display unit and storing the determination result in the internal memory.

1 is a block diagram showing the configuration of a self-diagnosis device during pregnancy according to the present invention,

Figure 2 is a circuit diagram showing the configuration of the self-diagnosis device during pregnancy according to the present invention,

Figure 3 is a flow chart showing a pregnancy self-diagnosis method according to the present invention.

<Explanation of symbols for the main parts of the drawings>

110 ..... Power supply

120 ..... Battery voltage detector

130 ..... Reference voltage setting part

140 ..... Fine constant current supply

150 ..... saliva sensor

160 ..... Signal amplification and buffer section

170 ..... MICOM

180 ..... Display

Hereinafter, a preferred embodiment of the present invention according to the technical spirit as described above will be described in detail with reference to the accompanying drawings.

Prior to describing the preferred embodiment of the present invention, the concept of the present invention, for example, the basic principle of determining whether or not to be pregnant using the electrical resistance of saliva extract or saliva electrical resistance as follows.

In general, women are physiologically active every month and the secretions accumulated in the body are periodically or irregularly discharged through bleeding, which is called physiology.

Women's genital ovulation is formed on the 14th day before menstruation, the sexual desire is active, the LH hormone (estrogen) in the uterus is rapidly increased, the estrogen is increased in the salivary glands or other vaginal mucosa, which facilitates the inflow of sperm This makes it easier for the egg to implant in the uterus and produces a large amount of reproductive hormones (secretory explosions), which makes it suitable for conceived children.

The change in LH hormone component during ovulation is expressed by the concentration of impurities (estrogen hormone).

Usually, 4 days before ovulation day, the day of ovulation, 2 days after ovulation is the fertility period (pregnancy period) is possible, and the period after that is widely known as infertility period, the current Ogi-nosed ovulation cycle method, natural cycle method, basic temperature method, etc. The term of fertility is calculated by the method.

The basic components of saliva (acupuncture) are Na, protein, estrogen, and the like, and salivary gland changes cause hormonal changes depending on the symptoms of menstruation and ovulation. Depending on the amount and concentration of saliva (especially estrogen) is a diagnosis of fertility, and can also quickly predict symptoms of oralitis such as gynecological diseases and dry mouth.

In men, there is no change in saliva concentration (because there are no physiological symptoms and no change in salivary hormones).

The electrical resistance value according to the estrogen component is as follows.

Analysis of saliva on the 2nd day of menstruation shows the lowest level of LH female hormone (estrogen), which is a state in which the concentration of saliva is low. Therefore, when saliva is placed on the saliva detection sensor, a few micrometers of constant current source can be obtained depending on the estrogen content.

When supplied for a while, the saliva concentration is changed to an electrical resistance value.

The period of 2 to 5 days after menstruation is a period of infertility that is well known in the medical community for a long time, and this period is based on the natural cycle method and the Ogi ovulation cycle method.

When this section is set as a reference value, it becomes a comparison point as a reference point when saliva is input later, and it is possible to discriminate time between infertility zones, and when ovulation passes through physiology, eruption of estrogen hormone occurs and ovulation occurs after a certain time. You will know.

In other words, the electrical resistance of the diagnostic reference value is set to the internal reference value when the user inputs to the diagnosis device on the second day of menstruation for accurate diagnosis, and is determined and displayed by the diagnostic program.

1 is a block diagram showing the configuration of a pregnancy time self-diagnosis apparatus according to the present invention.

Here, reference numeral 110 denotes a power supply unit for supplying driving power using a battery, reference numeral 120 denotes a battery voltage detector for detecting a voltage level supplied from the power supply unit 110, and reference numeral SW1 denotes a power switch. Reference numeral 140 denotes a fine constant current supplyer for supplying a fine constant current, and reference numeral 150 is a constant current supplied from the fine constant current supplyer 140, and is generated in the mouth of a female under test using the provided sensing electrode. It represents a saliva detection sensor that senses the resistance of saliva and as a result outputs a fine voltage.

In addition, reference numeral 160 denotes a signal amplification and buffer unit for amplifying, buffering and outputting a fine voltage output from the saliva detection sensor 150 to a predetermined level, and reference numeral 130 denotes a reference voltage according to an input saliva component (sampling voltage). The reference voltage setting unit for setting the reference numeral 170 denotes a reference voltage set by the reference voltage setting unit 130, and after sampling the voltage output from the signal amplification and buffer unit 160, the sampled voltage is micro Computer 170 is digitized (HEX value) and stored in advance in the FROM to determine the scheduled date of ovulation by comparing with the electrical resistance value of each subject's menstrual cycle (by date), and to determine whether or not the pregnancy time of the subject based on the scheduled ovulation date A display control signal outputted corresponding to a result determined by the microcomputer 170, which indicates a microcomputer (microcomputer). In accordance with the present invention, a display unit which displays the discrimination result visually is displayed.

The operation of the pregnancy time self-diagnosis apparatus according to the present invention configured as described above will be described in detail with reference to FIG. 2 as follows.

First, the user presses the power switch (SW1) of the diagnosis device on the second day of menstruation for accurate self-diagnosis of pregnancy time, and the saliva is buried in the saliva detection sensor 150.

When the power switch SW1 is pressed, the power supply unit 110 discharges the charging voltage of the battery BT1 and supplies it to the microcomputer 170 through the power switch SW1.

At this time, the battery voltage detection unit 120 detects the level of the discharge voltage of the battery BT1 using the zener diode ZD. If the discharge voltage level is less than or equal to the set voltage (less than 2.6V), the high signal (H) is detected. ) Is transferred to the microcomputer 170.

When the signal output from the battery voltage detector 120 is a high signal, the microcomputer 170 transmits a control signal for displaying a low voltage to the display unit 180, and the display unit 180 receives the low signal. A light emitting diode (LED), which displays a voltage, emits light so that a user can easily identify a low battery condition.

When the power switch SW1 is pressed for a long time, the microcomputer 170 recognizes the power saving mode (POWER SAVE MODE) and automatically switches to the power saving mode when one saliva detection operation is completed.

On the other hand, when the power supply is sufficient, the microcomputer 170 transmits the driving signal (2.8V) to the fine constant current supply 140 for a predetermined time (780 ms) and then stops. Accordingly, the fine constant current supply 140 is stopped for 780 ms. Supply a constant voltage of 2.2V to the saliva detection sensor 150.

When the constant voltage is supplied, the saliva detection sensor 150 operates, and the saliva (estrogen) applied by the fine constant current source forms a buried state between the two electrodes, and the electrical loop is operated at a constant current in which oxidation (chemical reaction) does not occur. Is configured to output a fine voltage to the output by the fine stabilizing resistor R5 of the rear stage. At this time, the potential is about 20mV, which is transmitted to the signal amplification and buffer unit 160.

The saliva detection sensor 150 is manufactured by treating graphite and copper at a high temperature / high pressure on a circular ceramic plate to make an alloy, printing out by a standard dimension, and forming two polarities. And the external insulation element is made of an insulating frame using alumina element ceramic. When you put saliva, you can raise the proper amount by placing a mechanical step on the sensor surface so that the proper amount can be raised. Using a small saliva cutlery, saliva can be easily raised on the sensor surface. Next, 0.4 micron of gold is plated on the structural polarity of the copper plate to prevent oxidative corrosion of saliva (precipitating needles) to produce a uniform sensor value.

On the other hand, the signal amplification and buffer unit 160 is a predetermined level (about) according to the amplification degree set by the resistors R6 and R7 in the high-sensitivity micro-amplifier 161 by the microsensing voltage generated by the saliva detection sensor 150. 10 times) to amplify and output. The amplified voltage output from the high sensitivity fine amplifier 161 is applied to the buffer 162 after the chattering noise is removed by the noise filter composed of the diode D1 and the capacitor C6. The buffer 162 buffers and stabilizes the saliva sensing voltage from which the noise is removed by the noise filter, and the stabilized saliva sensing voltage is applied to the microcomputer 170 after being reduced to an appropriate level by the resistor R8. .

At this time, the microcomputer 170 outputs a square wave delayed by 2S to the reference voltage generator 130 to detect saliva according to the input, and the reference voltage generator 130 applied to the reference voltage generator 130 receives the diode D2 and the resistor R9. The applied square wave is applied to the base of the switching element Q1 to drive the switching element Q1, and the voltage output from the switching element Q1 becomes the reference voltage of the triangular wave by charging and discharging of the capacitor C6. It is applied to the microcomputer 170.

Since the reference operating voltage of the switching element Q1 is set to be proportional to the input, that is, the output voltage of the buffer 162, the waveform has a temporal vector according to the amount of saliva (estrogen).

Next, the microcomputer 170 samples the detected voltage output from the signal amplification and buffer unit 1600 by the reference voltage (sampling voltage) set by the reference voltage setting unit 130 and converts the detected voltage into a digital signal (detection voltage). This is converted into a sense resistor value, where the sense resistor value R can be simply converted into a formula by Ohm's law.

In other words, it can be simply obtained as saliva sensing electrical resistance value (R) = supply voltage (V) / supply current (I). When the detection electrical resistance value R is obtained as described above, the pregnancy time and infertility period of the examinee are determined in comparison with the reference resistance value R ′ of each woman's menstrual cycle previously stored in the internal memory. The electrical resistance of saliva is converted into a digital value and stored in the microcomputer 170 FROM, and the microcomputer 170 diagnostic program is tracked and determined by the following formula.

Program vector value = +6> X <-11 or +6> X <-5

The X value is determined as an infertility period if the X value is within the X value based on the standard menstrual cycle (28 weeks) based on the electrical saliva resistance value detected in [Table 1].

For accurate determination of the user, the saliva electrical resistance is input once every three months to set the reference voltage.

[Table 1] below shows the standard electrical resistance range and pregnancy period discrimination table for each menstrual cycle (for example, 28 days).

For example, suppose that the subject registers the electrical resistance value of saliva in the postmenstrual diagnosis and measures saliva on March 5, and the detection resistance value is 1500 (ohm). It is determined on the fifth day after the scheduled date, and therefore, the examinee can easily know that the infertility period is determined.

The result determined as described above is stored in the internal memory, and also the display control signal is transmitted to the display unit 180 to inform the examinee by the indicator (LED) so that the user can easily identify whether the pregnancy or infertility period. Do it.

That is, if the judgment result is not a temporary period, the six green indicator lights are turned on for each section. In contrast, if it is determined that the pregnancy period, five red indicators flash for each section. You can indicate this in a way that works.

In addition, although not shown in the drawing, the display unit 180 may display the determination result using sound.

Figure 3 is a flow chart showing a pregnancy self-diagnosis method according to the present invention.

As shown therein, performing initialization when power is supplied (S102 to S104); Extracting the electrical resistance of the saliva after saliva is detected after performing initialization (S106 to S108); Determining an ovulation scheduled date by comparing the extracted electrical resistance value of the saliva with an electrical resistance value of each subject's menstrual cycle (by date) pre-stored in an internal memory, and determining whether a test subject is pregnant based on the scheduled ovulation date (S110). )Wow; Displaying the determination result on a display unit, and storing the determination result in the internal memory (S112 to S114).

In the pregnancy self-diagnosis method according to the present invention made as described above, when power is supplied in step S102, initialization is performed in step S104.

The saliva is detected by the saliva detection sensor in step S106, and the electrical resistance value of the detected saliva is extracted in step S108.

Subsequently, in step S110, the resistance value of the saliva extracted is compared and analyzed by the menstrual cycle (date) of the test subject pre-stored in the internal memory (see Table 1) to determine the ovulation scheduled date, and the pregnancy time of the subject based on the scheduled ovulation date. It is determined whether or not.

When the determination of pregnancy time is finished, the determination result is displayed on the display unit in step S112, and the determination result is stored in the internal memory in step S114.

According to the present invention described above, it is not only portable, but if necessary, simply put the saliva of the woman on the saliva sensor, it is possible to simply inform the pregnancy time or infertility period.

Claims (4)

Pregnancy self-diagnosis device, A fine constant current supply unit for supplying a fine constant current; A saliva detection sensor which receives a constant current from the fine constant current supply, detects an electrical resistance value of saliva produced in the mouth of a female under test using a sensing electrode provided, and outputs a fine voltage as a result; A signal amplification and buffer unit which amplifies the fine voltage output from the saliva detection sensor to a predetermined level, and buffers and outputs the buffered voltage; A reference voltage setting unit for setting a reference voltage (sampling voltage) for digitizing the signal output from the signal amplification and buffer; After sampling the voltage output from the signal amplifying and buffering unit with the reference voltage set by the reference voltage setting unit, the sampled digital signal is converted into a sensing resistance value, and the sensing resistance value is built-in by the menstrual period of the examinee (date) (I) a microcomputer (microcomputer) for determining an ovulation scheduled date by comparing the resistance value with the resistance value, and determining whether a test subject is pregnant based on the scheduled ovulation date; And a display unit configured to display a determination result according to a display control signal output in correspondence with the result determined by the microcomputer. The apparatus of claim 1, further comprising: a power supply unit supplying driving power to the microcomputer; Pregnancy self-diagnosis device further comprises a battery voltage detection unit for detecting the voltage level supplied from the power supply to deliver to the microcomputer. The method of claim 1, wherein the signal amplification and buffer unit, An amplifier for amplifying the minute voltage output from the saliva detection sensor to a predetermined level corresponding to the amplification degree set by the resistor R60 (R7), a diode and a capacitor for removing chattering noise of the amplifying voltage output from the amplifier; And a buffer for buffering and stabilizing the saliva sensing voltage from which the noise is removed by the diode and the capacitor, and a resistor for appropriately reducing the level of the saliva sensing voltage outputted from the buffer. Device. In self-diagnosis method of pregnancy, Performing initialization when power is supplied; Extracting a resistance value of saliva if saliva is detected after performing initialization; Determining the date of ovulation by comparing the extracted saliva resistance with an electrical resistance value of each subject's menstrual cycle (by date) pre-stored in an internal memory, and determining whether a test subject is pregnant based on the scheduled date of ovulation; And displaying the determination result on a display unit and storing the determination result in the internal memory.