JPS60190942A - Ovulation forcasting and detection apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an ovulation prediction and detection device used to predict and detect the exact timing of ovulation and increase the probability of pregnancy during artificial insemination of mammals. It is.

Structure of the conventional example and its problems In addition to continuous measurement of basal body temperature, methods for predicting and detecting ovulation include, for example, focusing on changes in the chemical characteristics of secretions that occur before ovulation and detecting its components. Methods have been proposed, such as analyzing it by gas chromatography or obtaining an indication through a chemical reaction. However, the analysis method using gas chromatography requires equipment that requires complicated procedures, and is difficult to operate unless it is an expert.

Similarly, methods for obtaining instructions through chemical reactions are difficult to handle, and since the instructions are determined based on color change, it is difficult to produce numerical results.

Purpose of the Invention The present invention belongs to a method that focuses on the chemical changes in secretions that occur before ovulation in mammals, and solves the conventional problems such as those described above. This paper attempts to realize predictive detection using an electrical method.

Structure of the Invention The ovulation prediction and detection device of the present invention comprises an alternating current generating means, a plurality of electrodes to which the output of the alternating current generating means is connected, a plurality of level determining devices, and a display that operates in accordance with the level determining device. The level determining device is connected to a potential proportional to the voltage across the electrodes. With this configuration, the resistance value of mammalian secretions can be detected.

DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

In the first figure), 1 is an alternating current generating means, 2 is a counter electrode to which the output of the alternating current generating means 1 is connected, and an equivalent resistance to be measured 3 is connected between the counter electrodes 2.

Reference numeral 4 denotes a level determination device, into which a voltage proportional to the equivalent resistance 3 connected to the counter electrode 2 is input.

Reference numeral 5 denotes a display device that operates in correspondence with the level determination device 4.

FIG. 1(b) shows AC generating means 1. A power supply device 6 that supplies voltage to the level determination device 4 and the display device; 7 is a power supply;
8 indicates a switch.

Figure 2 shows a specific circuit, with transistors 1o and 11 forming an astable multivibrator, and 12
is a waveform shaping transistor connected to an astable multivibrator, 13 is a positive side pulse output transistor, 1
4. , 16 is a signal inversion transistor 7, which drives the negative side pulse output transistor 16. 1γ and 18 are current limiting resistors, and these two resistors are set to the same value.

The counter electrodes 2 are connected by connecting cables 19 to the connection points of the resistors 17 and 18 and to the earth line of the circuit, respectively. 2
0 indicates the equal lateral measured resistance between the counter electrodes 2. 21 is a diode that rectifies the voltage across the equal side measuring resistor 20; 22 is an electrolytic capacitor; it is charged via the diode 21 with a voltage proportional to the equal side measuring resistor 20;
Ru. The input terminals of voltage comparators 23 to 27 are connected to the capacitor 22. 28 to 33 are resistors for setting the reference voltage, and the set reference voltage is applied to the voltage comparators 23 to 2.
7 is entered. 34-38 are voltage comparators 23-2
7 is an LED driven by 1 equivalent resistance to be measured 20
It is displayed by lighting up sequentially depending on the size of the image. 3
9 to 43 are resistors for limiting the current of the LED.

FIG. 3 shows the external appearance of an ovulation prediction and detection device according to the present invention. The counter electrode 2 is made of a thin material such as copper with N1 plating or gold plating. Connected to built-in electronic circuitry.

In general, it is known that the acid content in the vaginal secretions of many female mammals increases before ovulation. For example, before ovulation, a large amount of acids such as lactic acid and acetic acid are secreted. and thus the electrical resistance of vaginal secretions changes. This resistance corresponds to the equivalent resistance 3.

The operation of the ovulation prediction and detection device of this embodiment configured as described above is as follows.

In FIG. 1, a voltage generated by AC generating means 1 is applied to a counter electrode 2. In FIG. As described above, an equivalent resistance 3 is connected between the counter electrode wings in response to the chemical changes in secretions in the mammal's vagina that occur before ovulation. Therefore, an AC voltage divided by the internal resistance r of the AC generating means 1 and the equivalent resistance 3 is generated across the resistor 3. in this case,
The use of alternating current prevents polarization from occurring in the vicinity of the counter electrode 2, allowing stable measurements.

The voltage across the equivalent resistor 3 is applied to a level determining device 4Vζ, and the level determining device 4 drives the display device 5 according to the voltage across the resistor 3.

Next, the operation of this embodiment will be specifically explained using FIG. In the circuit shown in FIG. 2, the AC generating means 1 is comprised of transistors 10-16.

The transistors 10 and 11 constitute a multivibrator and generate a pulse waveform. This waveform is shaped by the transistor 12 and applied to the transistor 13. The voltage is applied to transistor 16 through transistors 14 and 15, and since transistors 13 and 16 are connected to the positive and negative supplies, there is a voltage between the junction of resistors 17 and 18 and the circuit ground level. Positive and negative pulses are generated.

The counter electrode 2 is connected between the connection point of the resistors 17 and 18 and the ground level, and when the pipe 50 is inserted into the vagina of a mammal, the mucous isolateral wave measuring resistor 2 is connected between the counter electrode 2
o occurs. As a result, a voltage is generated across the resistor 20 to be measured, which is divided by the resistor 17.1'8 and the resistor 20 to be measured. This voltage is rectified by a rectifier diode 21 and charges a capacitor 22.

Voltage comparators 23 to 27 are connected to the condenser 22 as the level determination device 4. Still resistance 28-3
3 respectively set the reference voltage, and when the voltage of the capacitor 22 becomes higher than the set individual reference voltage, the voltage comparators z3 to 27 respectively switch to LE.
Since current is applied to D, 14D lights up in accordance with the charge level of capacitor 22, thereby performing an operation of displaying υ target I11 constant resistor 2o.

The display is LHD on the body 51, 34 to 38 as shown in Figure 3.
is attached, and when this LED lights up, the resistance value of the resistance to be measured 2o is low, and it can be determined that the mammal is about to ovulate.

In this embodiment, five levels are set, but these can be arbitrarily determined and applied.

According to the present invention, it is possible to electrically predict and detect ovulation with high accuracy. It's a moat, and it's easy to operate and can be used for general purposes.

[Brief explanation of drawings]

FIGS. 1(a) and (b) are block diagrams showing the configuration of an embodiment of the present invention, FIG. 2 is an electric circuit diagram of an ovulation prediction and detection device according to an embodiment of the present invention, and FIG. 3(a) is a block diagram showing the configuration of an embodiment of the present invention. A partially sectional front view showing the structure of the main body of the same embodiment, and FIG. 3(b) is a top view of the counter electrode section. 1... AC generating means, 2... Counter electrode, 4.
... Level determination device, 6... Display device. Name of agent: Patent attorney Toshio Nakao and one other person
−

Claims (1)

[Claims] The level determining device includes an alternating current generating means, a plurality of electrodes to which the output of the alternating current generating means is connected, a plurality of level determining devices, and a display device that operates in accordance with the level determining device, and the level determining device is connected to the electrodes. An ovulation prediction and detection device configured by connecting to a potential proportional to the voltage across the .