JP2014176356A - Mole repellent device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mole repellent device that prevents repellent effect from being reduced by learning effect and provides efficient repellent effect, without being affected by conditions of ground or soil, and without selecting an installation position of the device in the mole repellent device.SOLUTION: A mole repellent device comprises a high pressure impulse voltage generator 2 including a capacitor 4, a changeover switch 5, a resistor 6, a DC power supply 7 and a step-up transformer 8, and a pair of electrode rods Pa, Pb connected to the step-up transformer through insulated wire 3. The electrical charge of the capacitor charged by the DC power supply through the resistor is discharged to a primary coil of the step-up transformer using the changeover switch, and the impulse voltage generated in a secondary coil is guided to the pair of electrode rods inserted in the cultivated land using the insulated wire.

Description

  The present invention relates to a technique for repelling moles in agricultural production, and more particularly to an apparatus for directly repelling moles by applying electrical stimulation.

  Mole feeds mainly on earthworms and insect larvae that live in the ground. For this reason, moles dig a tunnel underground and live in it. The tunnel is a nest as well as a trap for sensing and collecting prey.

Mole digs up such a tunnel, and seedlings of cultivated plants in the field may not take root. For example, if the lower part of the radish radish is hollowed out, it will die due to growth inhibition. Or, roots are cut, and wild mice that have entered the tunnel have eaten and damaged the root vegetables in the ground.

  Therefore, conventionally, means for removing moles from the field or keeping them away from the field have been proposed. However, those conventional techniques are based on chemical substances having a smell that moles dislike (Patent Documents 1 and 2). ), And those using the sounds and vibrations disliked by moles (Patent Documents 3 and 4).

  The techniques of Patent Documents 1 and 2 use mole repellents, but there are problems in maintenance, such as difficulty in sustainability, and there are concerns about soil contamination.

  For those using sound or vibration, sound or vibration is generated mechanically directly using wind power, or electrical energy is converted into mechanical vibration or sound by a motor or solenoid, etc. and propagated into the ground. Yes.

  Patent Document 3 uses a combination of wind power and an electric motor to propagate sounding vibrations into the ground. Patent Document 4 discloses a vibration generating unit including a conductive vibration generating device including a solar power generation device and a capacitor, a metal It is equipped with a vibration transmission unit consisting of piles.

  However, the attenuation when the generated sound or vibration propagates into the ground depends greatly on the grounding condition and the soil condition. That is, if the grounding is loose, vibration or sonic energy is cut off there, and the soil immediately after plowing has a lot of space, so that vibration or sonic energy is absorbed and it is difficult to cover the target area.

  In addition, learning effects may be derived from moles that hate sounds and vibrations but are not directly life-threatening.

  On the other hand, the main body that transmits this sound or vibration needs to be installed in the central part of the normal cultivated land, and has the disadvantage of impairing workability such as sowing, soiling after planting, and weeding.

  A method of directly repelling by energization is also known (Patent Document 5), but the problem is that the device becomes large, and the effect on small animals, especially harmful beasts living in the ground like moles, is not always satisfactory. was there.

JP-A-6-1705 JP 2007-124999 A JP 2006-109790 A JP 2011-172487 A Japanese Patent Laid-Open No. 2002-163

  The present invention solves the above-mentioned problems in the mole repelling device, i.e., greatly affected by the ground contact or soil condition, the point of reduced repelling effectiveness due to learning effects, the problem of the installation position of the device body, etc. Challenge to do.

  The present invention is characterized by providing a mole repelling device having a large repelling effect by directly giving a shock to a mole, and is based on the following technique.

A high-voltage impact voltage generator 2 including a capacitor 4, a switch 5, a resistor 6, a DC power source 7, and a step-up transformer 8, and a pair of electrode bars Pa and Pb connected to the step-up transformer via an insulated wire 3 In mole mole repelling device consisting of
The electric charge of the capacitor charged by the DC power supply through the resistor is discharged to the primary coil of the step-up transformer by the changeover switch, and the impact voltage generated in the secondary coil is insulated to the pair of electrode rods inserted in the cultivated land Mole repellent device characterized by being guided by.

  According to the mole repellent device of the present invention, the mole can be efficiently repelled without being restricted by the installation location, and the same repellent effect can be expected for the barbarian using the underground tunnel made by the mole as a moving route. .

FIG. 1 is an explanatory view showing an outline of the mole repellent device of the present invention. FIG. 2 is an explanatory diagram showing an example of the wiring state of the mole repellent device of the present invention.

  In the mole repellent device of the present invention, the charge of the capacitor charged through the normally closed contact of the changeover switch via a resistor from a battery or other DC power source is switched to the primary side of the transformer having a sufficient boost ratio by changing over the switch. Is discharged to generate a high-voltage impact voltage on the secondary side, which is guided to the electrode rod by the insulated wire.

  Hereinafter, although the Example of the mole avoiding apparatus of this invention is described based on drawing, this invention is not limited to this Example.

1 and 2, electrode rods Pa and Pb made of a good conductor are inserted and grounded at a point a1 on the opposite side AD of ABCD and a point b1 on BC in the rectangular cultivated land 1.
These electrode bars are connected to the high-voltage side output terminals 8c and 8d of the step-up transformer 8 of the impact voltage generator 2 by means of insulated wires 3a and 3b.

  On the other hand, in the impact voltage generator 2, the capacitor 4 is connected to the battery 7 via the normally closed contact 5a of the changeover switch 5 and the resistor 6, and is charged to a required voltage. The capacitor 4 is connected to the primary side terminals 8a and 8b of the step-up transformer 8 through the normally open contact 5b of the switch 5.

Here is a specific numerical example: a copper pipe with a thickness of 1 mm, a diameter of 6 mm, and a length of 40 cm connected to an insulated wire having a conductor cross-sectional area of 0.85 mm ² and a length of 25 m on the short side of a 10 m × 30 m cultivated land. Insert about 30 cm of the electrode rod from the ground surface to face each other.

  Two batteries 7 charged to 15.0 V are connected in series as a power source, and a capacitor 4 of 16,000 μF is charged through a 100 ohm resistor 6 and a normally closed contact 5 b of a changeover switch 5.

  The anode of the capacitor 4 is connected to one end of the primary side of the transformer 8 having a step-up ratio 40 through the normally open contact 5a of the changeover switch 5, and the negative electrode is connected to the other end of the primary side.

  When the capacitor 4 is discharged and charged by opening and closing the switch 5, a unipolar impact voltage having a peak value of 30.0 × 40 = 1200 V and a wavelength of about 100 mS is generated on the secondary side of the transformer during discharge.

  When the secondary coil resistance of the transformer is 8 kilohms and the inter-electrode resistance value is 0.002 megohms, an impact current of about 100 mA hits a mole that lives between the electrodes. The charging / discharging is repeated 2 to 3 times per point, the electrode bar is moved by about 3 m, and this is performed for 3 points to scan a short side of 10 m.

As a result of carrying out the above-mentioned rectangular cultivation land, one mole of carcasses was found on the outer edge of the target area on the next day of application in Example 1 and on the second day after application in Example 2 of another cultivation area. It is unclear whether the cause of death is electrocution caused directly by application. However, the behavior of moles, such as the formation of a new tunnel in the cultivated land applied for at least one month, was not observed, and there was no damage to the crops thereafter. Is done.
In addition, even when a person touched the soil in the cultivated land directly while applying the repellent device, no impact was felt.

The effect can be obtained by performing this once or twice in the larva period of the crops that are damaged by moles (approximately 2 months for radishes).

  The present invention has a large repellent effect that has not been seen in previous devices by directly giving a shock to a mole, and a similar repellent effect is expected for a barbarian whose main route is an underground tunnel created by a mole. This greatly contributes to improving the productivity of the agricultural industry.

1: Square (ABCD) cultivated land
a1, a2, a3: Installation and insertion positions of electrode rods on side AD b1, b2, b3: Installation and insertion positions of electrode rods on side BC
Pa: Electrode bar on side AD Pb: Electrode bar on side BC 2: High-voltage impact voltage generator 3 (3a, 3b): Insulated wire
4: Capacitor 5: Changeover switch 5a: Normally open contact 5b: Normally closed contact 5c: Contact 6: Resistor 7: Battery 8: Step-up transformer 8a, 8b: Primary side terminal 8c, 8d: Secondary side terminal

Claims (1)

A high-voltage impact voltage generator 2 including a capacitor 4, a switch 5, a resistor 6, a DC power source 7, and a step-up transformer 8, and a pair of electrode bars Pa and Pb connected to the step-up transformer via an insulated wire 3 In mole mole repelling device consisting of
The electric charge of the capacitor charged by the DC power supply through the resistor is discharged to the primary coil of the step-up transformer by the changeover switch, and the impact voltage generated in the secondary coil is insulated to the pair of electrode rods inserted in the cultivated land Mole repellent device characterized by being guided by.