JPS59214442A - Control apparatus of artificial fertilization thermostatic 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] Industrial Application Field The present invention relates to a constant temperature device for artificial insemination that thaws cryopreserved sperm and maintains it at a temperature that allows fertilization during artificial insemination for animal breeding in the livestock industry. The present invention relates to a control device.

Structure of the conventional example and its problems In recent years, artificial insemination using frozen sperm has been carried out in the aquaculture industry. , a method of introducing frozen sperm pellets has been adopted.

In this method, the following methods were used to obtain a nutrient solution at a constant temperature and constant volume. That is, put a specified nutrient solution into a glass pot, put the beaker into a container made of insulating material, gradually pour hot water into the container, and heat the beaker to bring the temperature inside the beaker to a boiling point. Once the temperature rises, use a thermometer placed in the beaker to visually confirm that the temperature has reached the specified level.

However, the above method involves unstable elements such as visual temperature confirmation and hot water injection, and is also accompanied by complicated work.

Purpose of the Invention In view of the above-mentioned drawbacks, the present invention provides an apparatus that automatically supplies a nutrient solution to thaw frozen sperm, accurately raise it to a fertilization temperature, and keep it warm during artificial insemination. In particular, the aim is to improve the accuracy of the controlled temperature and to shorten the heating time.

"Configuration of the Invention" - In order to achieve distribution efficiency, the control device for the constant temperature device for artificial fertilization of the present invention has a power control means, a temperature detection device, and a temperature detection device, and the control device has a power control means, a temperature detection device, and a temperature detection device. It is configured with a means to inhibit the temperature control operation when a predetermined temperature is reached, and it is configured to automatically supply a fixed amount of nutrient solution at a fixed temperature, and to control the temperature. It has improved accuracy.

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

In FIGS. 1 and 2, 1 is a bottomed cylindrical outer frame of the main body, and 2 is a heat insulating material 3 such as glass wool on the outer frame of the main body.
, 4 is a bottomed cylindrical inner container; An inner lid made of an aluminum plate fixed to the inner surface covers the upper opening of the inner container 2 in the same way as the outer lid 5. 7 is an electric heating element wrapped around the upper outer wall of the inner container 2; 8 is an electric heating element arranged so as to surround the temperature detection device 9 attached to the center of the outer bottom surface of the inner container 2; 10
A support frame provided on the inner bottom surface of the main body outer frame 1 supports the control circuit 12 via an insulating plate 11. 13 is the inner container 2
A top plate having a plurality of holes 14 is attached to the upper part of the holder. 1s (dl, hole 14 of holder 13
A small glass container 16 held by is a nutrient solution stored in this small container 15. Further, 17 is a handle provided on the upper surface of the outer lid, 18 is a leg attached to the bottom of the main body outer frame 1, and 19 is a neon lamp for indicating energization.

FIG. 3 is a block diagram showing the configuration of the control circuit of the constant temperature device for artificial fertilization according to the embodiment, in which 2o is a power control means, 21 is a temperature control device, and 22 is a control circuit for a predetermined time or a predetermined temperature. 2 shows means for inhibiting the temperature control operation of the temperature control circuit.

7.8 is an electric heating element as mentioned above, and 9B is a temperature detection device.

FIG. 4 is an electric circuit diagram showing a specific configuration of a control device for a constant temperature device for artificial fertilization according to an embodiment of the present invention. 30 is a power source, 31 is a temperature fuse connected in series to this power source, and 32 is a Resistor connected to neon lamp 19, 20
32, 33, and 34 are two-way three-terminal Zyristors that control the current flow to the electric heating elements 7 and 80 connected in parallel, and 32, 33, and 34 convert the AC voltage of the power source 30 into a DC voltage using the resistors, rectifier diodes, and smoothing capacitors connected in series, respectively. Convert to

The temperature detection device 9 consisting of resistors 36, 36, 37 and a negative characteristic thermistor forms a bridge circuit 4111 for the DC voltage, and its output is connected to the voltage comparator 38.

3 (Jjl, PNP type transistor directly connected to the power supply 30 through the resistor 4o, 4, NPN type transistor directly connected to the power supply 30 through the resistor 42, 43, 44
．． 45 (d, the base resistance determines the operating point of transistor 39.41; 46 is the base of transistor 390;
The diode 47.48 prevents a reverse voltage from being applied between the emitters, and the resistor 47.48 supplies the base current to the NPN transistor 49.The connection point P of these resistors 47.48 is connected to the collector of the transistor 41. and the output of the voltage comparator 38 are connected.

The collector terminal of the transistor 49 is connected to the gate terminal of the bidirectional single-child thyristor 20 via a resistor 50.

The temperature control device 21 is configured as described above.

Reference numeral 22 denotes a circuit block indicating means for inhibiting the temperature 11il control operation for a predetermined time or until the temperature reaches a predetermined temperature IJ shoulder.
The configuration is such that the temperature control operation is prohibited when the value 1 reaches jl, ^-f.

The crab one-time detection device consisting of resistors 51, 52, 37 and a negative characteristic thermistor constitutes a bridge circuit, the output of which is connected to a voltage comparator 53.

54 and 551d, respectively, are NPN type transistors in which the output of the voltage converter 53 is connected to the pair of resistors 56 and 5 through resistors 56 and 551d. It's 58fd.
This is a resistor connected to supply the base current of the l-ransisk 54.55. The collector terminal of the transistor 54 is connected to a DC power supply through a resistor 59, and is further connected to the base terminal of an NPN transistor 61 through a resistor 60. Further, the collector terminal of the transistor 61 is connected to a connection point Q between the resistors 51 and 52 via a resistor 62.

The collector terminal of the transistor 55 is connected to the base terminal of the PNP transistor 64 via a resistor 63.
A collector terminal of the transistor 64 is connected to a connection point R between the resistors 35 and 36 via a resistor 65.

6614 is an NPN type transistor, and together with 67, a three-way buzzer, it constitutes a low frequency oscillation circuit, and performs one-shot notification.

11 (68, 69, 70. Capacitor 71 constitutes a bridge circuit. The connection point between capacitor 71 and resistor 70 is connected to transistor 54 via diode 72.
is connected to the collector terminal of the The output of the bridge circuit is connected to a voltage comparator 73, and the output 1d of the voltage comparator 73 is connected to the base terminal of the N'P N-type transistor 4. The collector terminal of the transistor 74 is
Connected to the oscillation circuit.

The operation of the control device for the constant temperature device for artificial fertilization of the wooden embodiment constructed as described above will be explained below. Immediately, pour the nutrient solution into the small container (A) 15 stored in the main body, and place it at the bottom of the inner container 2 using the holding μm3. Next, the outer lid 5 is closed, and electricity is applied to the present artificial lees-retaining device.

Then, the neon lamp 19 lights up and the resistor 32. The smoothing capacitor 34 is charged via the rectifying diode 33 to obtain a DC power supply of the control amount i#i' 112. Control amount:
(fd at %512) When the temperature inside the inner container 2 is low and the resistance of the negative characteristic thermistor is high, i.e. immediately after energization, the output of the electrification comparator 38 becomes a high level, while the voltage ratio The output of the splitter 53 also becomes high level.

The transistors 39 and 41 are connected to the voltage resistors 40 and 41 described above.
Since it is directly connected to the power supply 30 via 42 and 43, it is turned on only when the base current flows by controlling these resistors. Therefore, the transistor 41 is turned off only near the zero point of the voltage Δm h and is turned on at other times. Therefore, if the connection point P is at low temperature? When the applied voltage is at a high level only near the zero point, the l-rough sister 49 is turned on only near the zero point. Therefore, the bidirectional three-terminal silicate is fired repeatedly near the zero point, conducting and energizing the electric heating elements 7 and 8.

Since the gate current flowing through 50, which has a relatively low resistance value, is generated only near the zero point as in the J2 section, the burden on the DC power supply is relatively low.

In this way, the electric heating elements 7 and 8 are energized to heat the inner container 2. The inner container 2 has a two-part opening closed by an inner lid 6 to form a closed space, and has electric heating elements 7 and 8.
The heat added by the heat insulators 3 and 4 effectively raises the temperature within this closed space by 111 degrees.

Now, since the output of the voltage comparator 63 is at a high level, the transistor 55 is turned on, the transistor 64 is also turned on, and the resistor 65 is connected in parallel with the resistor 35, so that the voltage at the connection point H is divided into two parts. Therefore, the operating temperature of the temperature control device 21 is deviated to the higher side.

On the other hand, the transistor 54 is turned on, and the transistor 61
Since both are off, the resistance values of resistors 51 and 52°37 and the negative characteristic thermistor'/! The operating temperature of the temperature control device 21 is higher than the operating temperature of the temperature control device 21, which is determined by actually determining the temperature η1j. When the set temperature, which is lower than the temperature, is reached, the output 1 of the voltage comparator 53 becomes a low level. Then the transistor 55.64
is turned off and the resistor 66 connected in parallel with the resistor 35 is cut off, so the operating temperature of the temperature control device 21 is 35.3
l! determined by 4! ii'h degrees. Also, the transistor 54 is turned off, the transistor 61 is turned on, and the resistor 62 is connected in parallel to the resistor 52, and the voltage comparator 53
The output is 75A, which switches to high level.
Operation of the i control circuit 7+l exceeds the yield, lower it and change it.

When resistor 65 is cut off, /1', i'1 degree is determined by the resistance values of resistors 35, 36, 3γ and the temperature characteristics of the negative characteristic thermistor'/: (reaching 7+ degrees Therefore, the output of the voltage comparator 38 is at a low level, so the connection point P is at a low level, and the transistor 49 is at a low level.
Does not turn on. Therefore, since the bidirectional three-terminal Zyristor 20 is not conductive, the electric heating element 7.8 is not energized and heat generation stops.

In this way, the temperature of the inner container is detected by the temperature detection device 9 made of a negative characteristic thermistor, and the temperature inside the inner container 2 is kept constant by the control circuit 12.

If the temperature detection device 9 and the electric heating element 8 are far apart, ripples will occur in the control temperature. On the other hand, if it is brought closer, the control will start before the temperature inside the inner container 2 rises, and the rise will be exponential and very slow, but in this example, the temperature is shifted to a higher temperature than the actual control temperature. The temperature rises linearly, the temperature rise time is short, and ripples are small.

As described above, when the temperature stabilizes, the transistor 54 turns off and the terminal voltage of the capacitor 71 charged by the resistor 70 becomes higher than the divided voltage of the resistor 68.69, and the voltage comparator 73 becomes a high level. , transistor 74 is turned on. Then, the transistor 66 starts low frequency oscillation together with the three-terminal buzzer 6, and performs an audible notification operation.

In this way, it is possible to quickly obtain a nutrient solution with a constant temperature and a constant volume necessary to thaw frozen sperm, and when a pellet of frozen sperm is placed in this nutrient solution, the sperm can be brought to a temperature that can be fertilized. It is possible to restore 1i2I.

In addition to the effects of the invention, the control device for the constant temperature device for artificial fertilization of the present invention has the following advantages:
It has a power control means, a temperature detection device, and a temperature control device,
It is constructed with a means for prohibiting the temperature control operation for a predetermined time or until a predetermined temperature is reached, and the temperature rise time is fast, stable temperature fluctuation is small, and stable temperature accuracy is high. This makes it possible to realize a constant temperature device for artificial fertilization.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a thermostatic device for artificial fertilization in an embodiment of the present invention, FIG. 2 is a perspective view of a holder in an embodiment of the present invention, and FIG. 3 is a sectional view of an artificial fertilization thermostatic device in an embodiment of the present invention FIG. 4 is a block diagram of the control device of the constant temperature device, and is an electric circuit diagram in the same embodiment. 7.8... Electric heating element, 9... Temperature detection device, 20... Power control means, 22...
for a predetermined time or until a predetermined temperature is reached.
Means for inhibiting temperature control operation, 21...Temperature control device. Name of agent: Patent attorney Toshio Nakao Haga 1st person
1 Figure 17 Figure 2 4

Claims (1)

[Claims] A control circuit for a constant temperature device for artificial fertilization, which is equipped with an electric heating element and has a main body that has an outer lid that can be opened and closed, has a power control means, a temperature detection device, and a temperature control device, and has a predetermined temperature control circuit. A control device for a constant temperature device for artificial fertilization, having means for inhibiting temperature control operation when a predetermined temperature is reached within a time period of +d.