JPH0337885B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Application of the Invention) The present invention relates to an electrical stimulation device that electrically stimulates a tree by applying a high voltage to it in order to promote the production of shiitake mushrooms.

(Background of the invention) It is an empirical fact that in Shiitake cultivation, if lightning strikes a pre-germinated Hoda tree placed on a Hoda tree, abnormal growth of Shiitake mushrooms will occur on the nearby Hoda trees. , has long been known among cultivators. However, it was not known what factor in the lightning caused the abnormal occurrence of shiitake mushrooms.

The applicants requested cooperation from the forestry center of Tochigi Prefecture, which is a production area for shiitake mushrooms.
2-100KV lightning impulse (1
He experimented with a method of applying a commercial frequency AC voltage of 0.5 to 3 KV for 1 minute, and published the results in the May 1988 issue of the magazine ``Agricultural Denka''.

Through this experiment and subsequent experiments, it was found that applying high-voltage electrical stimulation to the stems just before they germinate has the effect of promoting the growth of shiitake mushrooms.

Therefore, there has been a demand for the development of an electrical stimulation device that can be used efficiently by shiitake mushroom cultivators.

(Object of the Invention) An object of the present invention is to provide an electrical stimulation device for shiitake mushroom stems that can be used efficiently by a shiitake mushroom cultivator.

(Characteristics of the Invention) In order to achieve the above object, the present invention comprises an electrical stimulation generator that generates a high voltage that stimulates the shiitake mushroom tree, a high voltage applicator, and a support stand. The high-voltage applicator is provided with a high-voltage electrode and a handle portion, each having an acute-angled tip that fits into the upper end surface of the upright wood, and connected to the high-voltage side output terminal of the electrical stimulation generator. , the support base has a support member for supporting the hoda tree in an upright state, and an acute-angled tip that sinks into the lower end surface of the hoda tree in the upright state, and is connected to the ground side output terminal of the electrical stimulation generator. This method is equipped with a ground electrode, which is inserted into both the upper and lower end surfaces of the hoda tree that is supported in an upright state by a support stand, and applies a high voltage in the axial direction of the hoda tree. Features.

(Embodiment of the Invention) FIG. 1 shows a state in which electrical stimulation is applied to a tree according to an embodiment of the present invention.

The electrical stimulation device includes an electrical stimulation generator 2 that generates a high voltage that has a stimulating effect on the wood 1.
, a high voltage applicator 3, and a support stand 4. A high voltage electrode (described later) provided on the high voltage applicator 3 is connected to a high voltage side output terminal 6 of the electrical stimulation generator 2 via a lead wire 5, and a ground electrode (described later) provided on the support base 4 is connected to a lead wire 7. Ground side output terminal 8
connected to.

As the electrical stimulation, lightning impulses, DC ripple voltage, etc. are effective. An example of a lightning impulse generator is shown in FIG. Reference numeral 9 denotes a DC power supply circuit that boosts a DC voltage of about 100V to a DC voltage of 2 to 100KV using a DC-DC converter and outputs the voltage, and is connected to a capacitor 11 via a charging switch 10. The capacitor 11 is connected to the discharge switch 1 on the other hand.
2. It is connected to the high voltage side output terminal 6 and the ground side output terminal 8 via an inductance 13 and a resistor 14. A bleeder resistor 15 is connected between the output terminals 6 and 8. The charging switch 10 and the discharging switch 12 are controlled in conjunction with each other by a control unit 16 so that their on/off states are reversed.The control unit 16 starts operating when a push-button start switch 17 is turned on, and the capacitor 11 is discharged. The charging switch 10 is turned off and the discharging switch 12 is turned on at the same time for a predetermined time sufficient to The start switch 17 is connected to the main body case 19 through a lead wire 18, as shown in FIG.

Since the charging switch 10 is normally on, the capacitor 11 is charged to a high voltage by the DC power supply circuit 9. When the start switch 17 is pressed, the controller 16 turns on the discharge switch 12 for a predetermined period of time, so that the capacitor 11
is discharged between the output terminals 6 and 8, and this discharge generates a lightning impulse (for example, a 1×40 μS waveform).

The electrical stimulation may be a DC pulsating voltage. An example of a DC pulsating voltage generator is shown in FIG. The AC power supply 20 with a commercial frequency of 100V is one of the step-up transformers 21.
The step-up transformer 21 is connected to the secondary side.
Outputs a voltage of about 400 to 1000V. The secondary side of the step-up transformer 21 is connected to the high voltage side output terminal 6 and the ground side output terminal 8 via a half wave rectifier 22 (a full wave rectifier may be used) and a voltage generation switch 23.
A bleeder resistor 15 is connected between the output terminals 6 and 8. The voltage generation switch 23 is turned on for a predetermined period of time (for example, 0.2 seconds or 0.5 seconds) by a control section 24 that starts operation when the push-button type start switch 17 is turned on.

When the start switch 17 is turned on, the control section 24 turns on the voltage generation switch 23 for a predetermined period of time.
turns on. As a result, the high voltage AC voltage generated on the secondary side of the step-up transformer 21 is transferred to the half-wave rectifier 22.
The voltage is half-wave rectified by the DC pulsating voltage and output from the output terminals 6 and 8 for a predetermined period of time.

Details of the high voltage applicator 3 are shown in FIG. The pistol-shaped high voltage applicator 3 is provided with a high voltage electrode 25,
The tip 25a is formed at an acute angle and protrudes from the insulating cylindrical portion 26. Tip 2 of high voltage electrode 25
The periphery of 5a is covered by an electrode protection cover 27, which is attached to the insulating cylindrical portion 26 so as to be movable back and forth, and is always pushed forward by a spring 28. The high voltage electrode 25 is connected to the high voltage side output terminal 6 of the electrical stimulation generator 2 by a lead wire 5. An insulated handle portion 29 is provided on the outside of the high voltage applicator 3 so that it can be operated with one hand. 30 is a band.

Details of the support stand 4 are shown in FIG. An insulating plate 32 is fixed on the base plate 31 of the support base 4, and the insulating plate 32
A ground electrode 33 is provided above. A tip 33a of the ground electrode 33 is formed at an acute angle and faces upward. A support member 34 in the shape of a semi-cylindrical frame is erected on the base plate 31 to support the hodagi 1 in an upright state.

Returning to FIG. 1 again, the use of the electrical stimulation device of the present invention will be explained. First, stand the hodagi 1 on the support stand 4. At this time, the hodagi 1 is placed against the support member 34 so that the sharp tip 33a of the ground electrode 33 is bitten into the lower end surface of the hodagi 1. Next, the high-voltage electrode 25 is strongly pressed against the upper end surface of the wood hod 1 so that its sharp tip 25a sinks into the end surface of the wood hod 1. At this time, the electrode protection cover 27 is pulled into the insulating cylinder part 26 against the spring 28. The worker holds the high voltage applicator 3 in one hand and the start switch 17 of the electrical stimulation generator 2 in the other hand.

In this state, when the start switch 17 is turned on, a lightning impulse or DC pulsating voltage is generated in the electrical stimulation generator 2, and is applied in the axial direction of the hodaki 1 for a predetermined period of time via the high voltage electrode 25 and the ground electrode 33. is applied to As a result of the Hodagi 1 being electrically stimulated by the application of a high voltage, the generation of Shiitake mushrooms is promoted.

According to this embodiment, the earth electrode 33 can be brought into strong contact with the lower end surface of the hoda tree 1 at the same time as the hoda tree 1 is erected on the support base 4, and the high voltage applicator 3 and the start switch 17 can be connected to each other. You can operate it with one hand at a time, so you can work more efficiently.

The structure of the high voltage applicator is not limited to that shown in Figure 4.
For example, it may be as shown in FIG. In the high-voltage applicator 35 shown in FIG. 6, a high-voltage electrode 36 protrudes from the front end, a flange 37 is provided in the center, and a portion behind the flange 37 constitutes a handle 38.
The tip 36a of the high voltage electrode 36 is formed at an acute angle, similar to the high voltage electrode 25 shown in FIG.

Similarly, the support base 4 is not limited to the structure shown in FIG. 5; for example, the support member 34 may have a cylindrical frame shape.

(Effects of the Invention) As explained above, according to the present invention, there is provided an electrical stimulation generator that generates a high voltage that stimulates shiitake mushrooms, a high voltage applicator, and a support base. The high-voltage applicator has an acute-angled tip that fits into the end surface of the top of the upright wood;
A high-voltage electrode connected to the high-voltage side output terminal of the electrical stimulation generator and a handle portion, the support base;
A support member for supporting the hodashi in an upright state, and a ground electrode having an acute-angled tip that sinks into the lower end surface of the hodashi in the upright state, and connected to the ground side output terminal of the electrical stimulation generator. , electrodes are inserted into both the upper and lower end surfaces of the hoda tree that is supported in an upright position by a support stand, and high voltage is applied in the axial direction of the hoda tree, making it suitable for cultivators of shiitake mushrooms. It has become possible to use it efficiently.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a state in which electrical stimulation is applied to a tree according to an embodiment of the present invention, FIG. 2 is a circuit diagram showing an example of an electrical stimulation generator according to the invention, and FIG. The figure is a circuit diagram showing another example of the electrical stimulation generator according to the present invention, FIG. 4 is a front view and side view showing an example of the high voltage applicator according to the present invention, and FIG. 5 is an example of the support stand according to the present invention. FIG. 6 is a front view and a side view showing another example of the high voltage applicator according to the present invention. 1...Hodagi, 2...Electrical stimulation generator, 3...
...High voltage applicator, 4...Support stand, 6...High voltage side output terminal, 8...Earth side output terminal, 17...Start switch, 25...High voltage electrode, 25a...Tip, 29...Handle part, 33... Earth electrode, 33
a...Tip, 34...Supporting member, 35...High voltage applicator, 36...High voltage electrode, 36a...Tip, 38
...Handle part.

Claims (1)

[Claims] 1 Consists of an electrical stimulation generator that generates a high voltage that has a stimulating effect on shiitake mushroom hodaki, a high voltage applicator, and a support stand; It has an acute-angled tip that sinks into the upper end surface, and is equipped with a high-voltage electrode and a handle portion that are connected to the high-voltage side output terminal of the electrical stimulation generator, and is supported in an erect state on the support stand. An electrical connection to a shiitake mushroom tree, comprising a support member and a ground electrode having a sharp tip that is inserted into the lower end face of the shiitake mushroom tree in an upright state, and connected to the ground side output terminal of the electrical stimulation generator. Stimulator.