JP2012085612A - Electric fence and method for controlling the same, and power-supply unit for electric fence, voltage generator for electric fence, and control circuit for electric fence - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric fence allowing a person to go through the fence at a desired position without being electrified, a method for controlling the electric fence, a power-supply unit for the electric fence, a voltage generator for the electric fence, and a control circuit for the electric fence.SOLUTION: When a power switch 55 is on and a first electric wire 2 is not grounded by a connector 23, voltage of a power supply 60 is applied to the voltage generator 56 via a B contact 54 of a relay and voltage is generated. The generated voltage is applied to a second electric wire 3 (bare electric wires (3A-3D)). If a person or wild animal touches the bare electric wires (3A-3D), the person or wild animal receives impact. A ground bar 23B of the connector 23 is inserted into the ground, and a hook 23A of the connector 23 is hooked on the first electric wire 2 to ground the first electric wire 2. As a result, a coil 53 of the relay is excited and the B contact 54 of the relay is opened, so that the voltage of the power supply 60 is not applied to the voltage generator 56 and generation of voltage is stopped.

Description

  The present invention relates to an electric fence and a control method thereof, a power supply device for the electric fence, a voltage generator for the electric fence, and a control circuit for the electric fence. More specifically, for example, the present invention relates to an electric fence for protecting a field from wild animals and a control method thereof, a power supply device for the electric fence, a voltage generator for the electric fence, and a control circuit for the electric fence.

  In rural areas in mountainous areas, electric fences are often used to prevent wild animals such as deer and frogs from entering the fields.

  In the electric fence, the voltage generated from the voltage generator in the power supply unit is applied to the bare wire that runs around the field, and wild animals such as deer and moths that are in contact with the bare wire are It is a fence for repelling by electric shock.

FIG. 7 shows a conventional electric fence.
As shown in FIG. 7, the conventional electric fence 100 includes a bare electric wire (103a to 103d) that is stretched by being locked to an insulator (101a to 101d) attached to a support column 102 placed around the field. Is provided.

  Further, the bare wires (103a to 103d) are connected by the upper and lower connections 104 made of bare wires every about 50 m.

  Further, among the bare wires (103a to 103d), the first bare wire 103d closest to the ground surface is located at a height of about 20 cm from the ground surface, and the second bare wire 103c is from the bare wire 103d. The third stage bare electric wire 103b is located at a height of about 40 cm upward from the bare electric wire 103c, and the fourth stage bare electric wire 103a is arranged from the bare electric wire 103b. It is located at a height of about 50 cm upward.

  A power supply device 105 having a voltage generator that generates a predetermined voltage applied to the stretched bare wires (103a to 103d) is electrically connected to the bare wire 103c.

  When a deer or a shark tries to invade a field surrounded by such an electric fence 100 and comes into contact with a stretched bare wire (103a to 103d), the deer or the frog is shown as an arrow in FIG. Output terminal 106 of power supply device 105, output line 107 of power supply device 105, bare wire 103c, vertical connection 104, bare wires (103a, 103b and 103d), wild animals 108 such as deer and moth, underground 109, ground rod 110, the ground wire 111, and the ground terminal 112 pass through a high current (impact current) that can give an impact to an animal or a human.

  As a result, wild animals 108 such as deer and moths are repulsed by electric shock.

  By the way, during energization of the electric fence 100, it may be necessary to enter a field. This is the case for weeding, fertilizing and other cases. In this case, it is necessary to dig into the gap between several bare wires (103a to 103d) that are energized and enter the field. However, of course, as shown in FIG. 8, since a person contacts a bare electric wire (103a to 103d), he / she receives an electric shock and cannot easily enter the field.

  Therefore, there is a case where an instrument called a gate as shown in FIG. 9 is used in order for a person to enter the field during energization.

As shown in FIG. 9, one end of the conductive wire inserted in the longitudinal direction in the substantially central portion of the instrument 120 formed in a cylindrical shape with an insulating material is electrically connected to the metal piece 121 processed into a hook shape. It is connected.
Further, the hook-shaped metal piece 121 is hooked on a receiving metal fitting 125, and the receiving metal fitting 125 is electrically connected to the bare electric wire 126.

  The other end of the conductive wire is electrically connected to a metal piece 122 processed into a circular shape. A spiral spring 123 is attached to the circular metal piece 122, and a bare electric wire 124 is connected to the spring 123.

Thus, the bare wire 126 and the bare wire 124 are in a state of being electrically connected via the gate.
Moreover, as shown in FIG. 10, the gate is attached to each stage of the stretched bare electric wires (103a to 103d).

Next, the usage of the gate is as follows.
When a person wants to enter the field, as shown in FIG. 11, the instrument 120 formed in a cylindrical shape with an insulating material is grasped by hand, the hook-shaped metal piece 121 is detached from the receiving metal fitting 125, and energization is performed. Cut off

  Then, as shown in FIG. 11, the person enters the field from the place where the gate is removed.

  For example, Patent Document 1 describes an entrance / exit of an electric fence as shown in FIG. That is, the structure of the entrance / exit of the electric fence described in patent document 1 is as follows.

  One frame 201C of the left and right frames constituting the body frame (201A to 201D) with the net 202 stretched on one body column 203A of the pair of body columns (203A, 203B) is opened and closed by a hinge part (204A, 204B). A means 205 for supporting the other frame 201A of the left and right frames is provided on the other main body column 203B.

  Also, the bare wires (208A to 208D) at the top of the left and right frames (201A, 201C) feed with the bare wires (209A to 209D) on the one frame 201C side of the left and right frames provided with the hinged portions (204A, 204B). It electrically connects with the electric wire (210A-210D).

Moreover, the usage method of the entrance / exit of the electric fence of patent document 1 is as follows.
If the fixing of the means 205 for fixing the main body frame 201A is released and the main body frame is pulled forward, the main body frame 201 is opened around the hinged portions (204A, 204B) and can be freely moved in and out. When closing, after closing the main body frame 201, the main body frame 201A is fixed again by means 205 for fixing.

JP 11-206305 A

  In this way, with conventional electric fences, you can remove the gate or open the main frame to enter the field surrounded by the electric fence without electric shock, but you can enter without electric shock. It was only from the place where the gate and doorway (hereinafter referred to as “gate” etc.) were installed, and could not enter the field from any place.

  In addition, in an electric fence stretched around 500 m, there are usually two or three places such as gates.

  In this case, in order to invade any place in the field, move to the installation place such as a gate and release the connection of the gate as shown in FIG. After entering the field and weeding, we have to go out of the electric fence from the gate and connect the gate and fix the main frame again.

  Therefore, it takes time and labor to enter a field surrounded by an electric fence, which is inconvenient.

  In addition, it is conceivable to increase the number of installation locations such as gates, but if the number of installation locations such as gates is increased, the cost increases, and the bare wires (103a to 103d) are locked to the insulators (101a to 101d). Compared to the case, it takes much time to install the gates.

In some cases, a gate or the like is not used at all, which is further inconvenient.
In this case, in order to enter any place in the field, as shown in FIG. 7, the electric fence 100 is moved along the bare wires (103 a to 103 d) of the electric fence 100 to the installation place of the power supply device 105. The power switch 155 is turned off to stop energization.

  Then, it returns to the place where it should invade, crawls through the gaps of several bare wires (103a to 103d), and enters the field. After completing the weeding work, etc., the gap between several bare wires (103a to 103d) is scraped again, goes out of the electric fence 100, and further moves to the place where the power supply device 105 is installed. Switch 155 must be turned on.

  In this way, the conventional electric fence was inconvenient because it had to be moved to the installation location of the gate and the power supply device in order to pass through the electric fence without human beings being electrocuted. There has been a demand for an electric fence that allows people to pass through without any electric shock at any point.

  The present invention was devised in view of the above points, and an electric fence that allows a person to pass through at a desired position without electric shock, a method for controlling such an electric fence, and such an electric fence are used. It is an object of the present invention to provide a power supply apparatus, a voltage generator used for such an electric fence, and a control circuit used for such an electric fence.

  In order to achieve the above object, an electric fence according to the present invention is formed in a first conductive member formed around a predetermined region, and substantially in the same region as the region where the first conductive member is formed. A second conductive member, a voltage generator that is electrically connected to the second conductive member, and that applies a voltage to the second conductive member, and is electrically connected to the first conductive member. And a control circuit that reduces the voltage value applied to the second conductive member by the voltage generator when the potential of the first conductive member becomes lower than a predetermined reference potential.

  Here, the voltage value applied to the second conductive member by the voltage generator when the potential of the first conductive member is lower than a predetermined reference potential while being electrically connected to the first conductive member. Since the voltage value applied to the second conductive member is lowered simply by making the potential of the first conductive member lower than the predetermined reference potential at an arbitrary place by the control circuit that lowers the voltage, the voltage value is decreased. Even if a person touches the two conductive members, they can enter or exit the fence.

  In addition, since the first conductive member and the second conductive member are formed in substantially the same region, the second conductive member whose voltage value is reduced at the place where the potential of the first conductive member is lowered. Even if a person touches it, it can enter and exit the fence.

  In addition, since the control circuit is electrically connected to the first conductive member, the control circuit can be reliably controlled without worrying about obstacles as compared with the control of the control circuit using, for example, a radio signal. .

  In the present invention, the voltage value of the second conductive member before the decrease is such that a person, a wild animal, or the like receives an impact when touching the second conductive member. It is assumed that the voltage value of the member is such a magnitude that a person or a wild animal does not receive an impact even if it touches the second conductive member.

  In the electric fence of the present invention, the first conductive member can be located at a predetermined height or more from the installation surface.

  In this case, for example, the grown dozens of grass does not reach the first conductive member, and it is difficult to contact the first conductive member, so the grown dozens of grass contact the first conductive member. Thus, it is possible to prevent the potential of the first conductive member from becoming lower than the predetermined reference potential (that is, the ground potential).

  In the electric fence of the present invention, the first conductive member can be located farther from the installation surface than the second conductive member.

  In this case, since the wild animal (for example, a shark) with a low height from the ground contacts the second conductive member before contacting the first conductive member, the contact with only the first conductive member causes an electric shock. It is possible to prevent intrusion into the electric fence without it.

In the electric fence of the present invention, the control circuit may reduce the voltage value applied to the second conductive member by the voltage generator when the potential of the first conductive member becomes the ground potential. it can.
In the electric fence of the present invention, the control circuit may stop the application of the voltage to the second conductive member of the voltage generator when the potential of the first conductive member becomes the ground potential. it can.

  In these cases, for example, one end of the conducting wire is brought into contact with the first conductive member, the other end is brought into contact with the ground, and the potential of the first conductive member is set to the ground potential. You can go out.

  In the electric fence of the present invention, the control circuit may stop the application of the voltage to the second conductive member of the voltage generator when the potential of the first conductive member becomes lower than a predetermined reference potential. can do.

In the electric fence of the present invention, the first conductive member and the second conductive member can be electric wires.
In this case, the installation location of the electric fence is easier to install than the plate-like conductive member even in a place where there are many undulations and steps, and the influence of wind is less.

  In order to achieve the above object, the electric fence control method of the present invention is configured such that when the potential of the first conductive member formed around the predetermined region is lower than a predetermined reference potential, the first fence A lower voltage is applied to the second conductive member formed in substantially the same region as the region where the first conductive member is formed, compared to the case where the potential of the first conductive member is greater than or equal to a predetermined reference potential. Applying a value.

  Here, even if a person touches the second conductive member whose voltage value has decreased by simply lowering the potential of the first conductive member below a predetermined reference potential at any place by such a process, You can enter and exit the fence.

  In addition, since the first conductive member and the second conductive member are formed in substantially the same region, the second conductive member whose voltage value is reduced at the place where the potential of the first conductive member is lowered. Even if a person touches it, it can enter and exit the fence.

Moreover, when the control method of the electric fence of the present invention includes the step of grounding the first conductive member with the connecting device covered with the insulating material, the connecting device is brought into contact with the first conductive member and grounded. The potential of the first conductive member can be easily made lower than the predetermined reference potential.
In this case, since the connection tool is covered with an insulating material, there is no risk of electric shock even if the connection tool contacts the second conductive member.

  In order to achieve the above object, the power supply device for an electric fence according to the present invention is electrically connected to a second conductive member formed around a predetermined region and connected to the second conductive member. A voltage generator for applying a voltage is electrically connected to a first conductive member formed in substantially the same region as the region where the second conductive member is formed, and the potential of the first conductive member is And a control circuit that reduces the voltage value applied to the second conductive member by the voltage generator when the voltage becomes lower than a predetermined reference potential.

  Here, since the first conductive member and the second conductive member are formed in substantially the same region, the second conductive member whose voltage value is reduced at the place where the potential of the first conductive member is lowered. There is no electric shock even if people touch it.

  In order to achieve the above object, the voltage generator for an electric fence according to the present invention is electrically connected to a second conductive member formed around a predetermined region, and the second conductive member. When the potential of the first conductive member formed in the substantially same region as the region where is formed is lower than a predetermined reference potential, a potential equal to or higher than the predetermined reference potential is applied to the first conductive member. A lower voltage value is applied to the second conductive member than when the second conductive member is provided.

  Here, since the first conductive member and the second conductive member are formed in substantially the same region, the second conductive member whose voltage value is reduced at the place where the potential of the first conductive member is lowered. There is no electric shock even if people touch it.

  In order to achieve the above object, the electric fence control circuit of the present invention is electrically connected to the first conductive member formed around the predetermined region, and When the potential becomes lower than a predetermined reference potential, the second voltage generator connected to the second conductive member formed in the substantially same region as the region where the first conductive member is formed The voltage applied to the conductive member is lowered.

  Here, since the first conductive member and the second conductive member are formed in substantially the same region, the second conductive member whose voltage value is reduced at the place where the potential of the first conductive member is lowered. There is no electric shock even if people touch it.

The electric fence according to the present invention can pass through at a desired position without an electric shock.
The electric fence control method according to the present invention can control the electric fence so that a person can pass through at a desired position without electric shock.
The power supply device for an electric fence according to the present invention can allow a person to pass through the electric fence at a desired position without electric shock.
The voltage generator for the electric fence according to the present invention can pass through the electric fence at a desired position without electric shock.
The control circuit for the electric fence according to the present invention can enable the person to pass through the electric fence at a desired position without electric shock.

It is the schematic which shows one structural example of the electric fence of this invention. It is the schematic which shows an example of the installation aspect of the electric fence of this invention. It is the schematic which shows the other example of the installation aspect of the electric fence of this invention. It is the schematic which shows a mode that the 1st electric wire of the electric fence of this invention is earth | grounded and a person scratches and dives in an electric fence. It is the schematic which shows an example of the circuit structure of the power supply device of this invention which used the PNP type transistor as a switching element. It is the schematic which shows an example of the circuit structure of the power supply device of this invention which used the P channel MOS field effect transistor as a switching element. It is the schematic which shows the installation aspect of the conventional electric fence. It is the schematic which shows a mode that a person scrapes and divides the conventional electric fence which is supplying with electricity. It is the schematic which shows the structure of the gate used for the conventional electric fence. FIG. 10 is a schematic view showing a conventional electric fence using the gate shown in FIG. 9. It is the schematic which shows the state by which the gate of the conventional electric fence was removed. It is the schematic which shows the structure of the entrance / exit of the conventional electric fence.

Hereinafter, embodiments of the present invention will be described with reference to the drawings to facilitate understanding of the present invention.
FIG. 1 is a schematic view showing a configuration example of an electric fence according to the present invention.

  In FIG. 1, an electric fence 1 according to the present invention is a first electric wire (an example of a first conductive member) stretched around a column 22 erected around a predetermined area (for example, a field area). 2 is provided. The first electric wire 2 is a bare electric wire.

Moreover, the electric fence 1 of the present invention is similarly stretched on the support column 22 and includes a second electric wire (an example of a second conductive member) 3.
The second electric wire 3 is composed of four bare wires (3A to 3D). As shown in the figure, the four bare wires (3A to 3D) are separated from each other by a predetermined length. It is stretched approximately in parallel.

  That is, the first-stage bare wire 3D closest to the ground surface is located at a height of about 20 cm from the ground surface, and the second-stage bare wire 3C is located at a height of about 20 cm upward from the bare wire 3D. The third-stage bare wire 3B is located at a height of about 40 cm from the bare wire 3C, and the fourth-stage bare wire 3A is located at a height of about 50 cm from the bare wire 3B. To do.

  Moreover, four bare electric wires (3A-3D) are connected by the up-down connection 4 which consists of a bare electric wire about every 50 m.

  The first electric wire 2 is positioned at a height of about 30 cm upward from the fourth-stage bare electric wire 3A, and the first electric wire 2 and the second electric wire 3 are substantially parallel to each other.

Further, the first electric wire 2 is stretched on the support column 22 while being locked to the fifth-stage insulator 21E from the ground surface.
The first-stage bare wire 3D constituting the second wire 3 is locked to the first-stage insulator 21D from the ground surface, and the second-stage bare wire 3C is locked to the second-stage insulator 21C. The third-stage bare electric wire 3B is locked to the second-stage insulator 21B, and the fourth-stage bare electric wire 3A is locked to the fourth-stage insulator 21A and is stretched on the column 22 respectively. Yes.

  The electric fence 1 of the present invention includes a voltage generator 56 that is electrically connected to the output terminal 6, the output line 7, and the second electric wire 3 and applies a voltage to the second electric wire 3. .

  In addition, the electric fence 1 of the present invention is electrically connected to the first electric wire 2 via the first electric wire terminal 59, the covered electric wire 15, and the fifth stage insulator 21E. The control circuit 24 is provided to reduce the voltage value applied to the second electric wire 3 by the voltage generator 56 when the electric potential of the electric wire 2 becomes lower than a predetermined reference potential.

  In addition, as a method for lowering the potential of the first electric wire 2 below a predetermined reference potential, for example, a metal hook at one end of the conductive connecting device 23 covered with the insulating material 31 shown in FIG. There is a method in which 23A is brought into contact with the first electric wire 2, and a metal grounding rod 23B at the other end of the connection tool 23 is inserted into the ground to be grounded.

  Here, one end of the connection device does not necessarily have to be a hook shape, and may be a clip shape, for example. Further, the other end of the connecting device does not necessarily have a rod shape, and may be, for example, a plate shape or may be sharpened.

  The voltage generator 56 and the control circuit 24 are built in the power supply device 5, and the power supply device 5 includes a power supply 60 and a power switch 55.

  Further, the control circuit 24 includes a relay winding 53 and a relay B contact 54 as switching elements, and further includes an NPN transistor 52 for operating them and an inverter 51 of a logic circuit.

  The first wire terminal 59 that is electrically connected to the first wire 2 is connected to the input point of the inverter 51 of the control circuit 24, and the voltage of the power source 60 is connected to the connection point via the resistor R1. Is applied.

Further, the base of the NPN transistor 52 is connected to the output point of the inverter 51.
Further, one end of a relay winding 53 as a switching element is connected to the collector of the NPN transistor 52.

  The positive side of the power source 60 is connected to the other end of the winding 53 of the relay, and the negative side of the power source 60 is connected to the emitter of the NPN transistor 52.

The negative side of the power source 60 is connected to the ground terminal 12 of the voltage generator 56, and the ground terminal 12 is connected to the ground bar 10 and grounded.
The B contact 54 of the relay is connected to the power input point of the voltage generator 56.

  Here, although the first electric wire is stretched on the uppermost stage, the electric fence is substantially the same as the first conductive member formed around the predetermined region and the region where the first conductive member is formed. A second conductive member formed in the region; a voltage generator that is electrically connected to the second conductive member and applies a voltage to the second conductive member; and the first conductive member electrically And a control circuit that reduces the voltage value applied to the second conductive member when the potential of the first conductive member is lower than a predetermined reference potential and is connected to the first conductive member. The first electric wire may not be stretched on the uppermost stage.

  For example, the first electric wire can be stretched between four bare electric wires (second electric wires).

  However, if the first electric wire is stretched on the uppermost stage, it becomes easy to distinguish the first electric wire from the second electric wire. Since it contacts a 2nd electric wire before contacting, it can prevent entering into an electric fence, without contacting only a 1st electric wire and receiving an electric shock, and is preferable.

  Moreover, by making the color of the first electric wire different from the color of the second electric wire, it is possible to prevent the first electric wire from being clearly recognized and mistakenly identifying the first electric wire.

  Moreover, although the electric wire is mentioned as an example of the first conductive member and the second conductive member, an electric fence is formed with the first conductive member formed around the predetermined region and the first conductive member. A second conductive member formed in substantially the same region as the first conductive region, a voltage generator electrically connected to the second conductive member and applying a voltage to the second conductive member, and a first conductive member And a control circuit that is electrically connected to the member and reduces the voltage value applied to the second conductive member by the voltage generator when the potential of the first conductive member becomes lower than a predetermined reference potential. If it is, it may not necessarily be an electric wire, for example, you may use a conductive plate.

  However, an electric wire is preferable because the installation location of the electric fence is easier to install than the conductive plate, and the influence of wind is less, even in places where there are many undulations and steps.

FIG. 2 is a schematic view showing an example of an installation mode of the electric fence of the present invention.
When a deer or a shark tries to invade a field surrounded by such an electric fence 1 and comes into contact with a stretched bare wire (3A to 3D), the deer or the frog is shown as an arrow in FIG. Output terminal 6 of power supply device 5, output line 7 of power supply device 5, bare wire 3C, vertical connection 4, bare wires (3A, 3B and 3D), wild animals 8 such as deer and moth, underground 9, ground rod 10, a ground wire 11, and a ground terminal 112, a high current (impact current) flows so that an impact can be given to animals, humans, and the like.

  FIG. 3 is a schematic view showing another example of the installation mode of the electric fence of the present invention. As shown in FIG. 3, the electric fence 1 of the present invention does not completely surround the field with the first electric wire 2 or the second electric wire 3, and a part thereof is another object such as a rock wall 41. Good.

  In addition, although the example using a rock wall was shown in FIG. 3, for example, a part of electric fence may be an outer wall of a building.

Next, the mechanism of the electric fence of the present invention will be described.
As shown in FIG. 1, when the power switch 55 is “ON” and the first electric wire 2 is not grounded by the connecting device 23, the voltage of the power source 60 is applied to the first electric wire 2 through the resistor R <b> 1. Is given.

  At this time, since the input of the inverter 51 is “H” (high), the output is “L” (low). Thus, since the NPN transistor 52 is “off”, the relay winding 53 is not excited. Therefore, since the B contact 54 of the relay is closed (conducted), the voltage of the power source 60 is applied to the voltage generator 56 through the B contact 54 of the relay to generate a voltage.

  The generated voltage is applied to the second electric wire 3 (bare wires (3A to 3D)), and when a person or a wild animal comes into contact with the bare wires (3A to 3D), it receives an impact. Note that the voltage of the voltage generator 56 is not applied to the first electric wire 2.

  FIG. 4 is a schematic view showing a state where a first electric wire of the electric fence of the present invention is grounded and a person scratches the electric fence, and as shown in FIG. 4, as shown in FIG. Is inserted into the ground, and the hook 23A of the connecting device 23 is hooked on the first electric wire 2 to ground the first electric wire 2. That is, the potential of the first electric wire 2 is set lower than a predetermined reference potential.

  Then, the ground resistor R0 is connected to the input of the inverter 51 of the control circuit 24. The resistance value of the resistor R1 (200 kΩ or more) is set to a value 10 to 20 times the normal earth resistance value.

  Since the ground resistor R0 is connected to the input of the inverter 51, the input of the inverter 51 becomes “L” (low). Then, the output of the inverter 51 becomes “H” (high), and the NPN transistor 52 becomes “ON” (conductive). As a result, the relay winding 53 is excited and the relay B contact 54 is opened (no longer conducting), so that the voltage of the power source 60 is not applied to the voltage generator 56, and the voltage generation stops. That is, the voltage value applied to the second electric wire 3 is reduced.

  As described above, while the grounding rod 23B of the connection tool 23 is inserted into the ground at an arbitrary place and the hook 23A of the connection tool 23 is hooked on the first electric wire 2 and the first electric wire 2 is grounded, Since the voltage generator 56 does not generate a voltage, as shown in FIG. 4, during this time, a person can crawl the second electric wire 3 without getting an electric shock and enter the field to perform weeding or the like.

  Then, after weeding and the like are finished, the person scrambles the second electric wire 3 without electric shock again, goes out of the electric fence and removes the connecting device 23, and returns to the circuit state as shown in FIG. It will be.

  That is, the first electric wire 2 and the ground are interrupted, and the ground resistance R0 is eliminated. Then, the input of the inverter 51 of the control circuit 24 becomes “H” (high), and the output becomes “L” (low).

Thus, since the NPN transistor 52 is “off”, the relay winding 53 is not excited. Therefore, since the B contact 54 of the relay is closed (conducted), the voltage of the power source 60 is applied to the voltage generator 56 through the B contact 54 of the relay to generate a voltage.
And again, it operates as an electric fence that can repel wild animals and the like by the voltage generated by the voltage generator 56.

  Moreover, although the control circuit using a relay switch has been described as an example of the control circuit of the present invention, other switching elements may be used. For example, as shown in FIG. 5, a PNP transistor 61 may be used as a switching element, and as shown in FIG. 6, a P-channel MOS field effect transistor 62 may be used as a switching element.

  Further, the control circuit is electrically connected to the first conductive member, and the voltage generator applies the second conductive member when the potential of the first conductive member becomes lower than a predetermined reference potential. Of course, other switching elements may be used as long as the voltage value is lowered.

  In addition, although an example using a relay as a switching element has been described, the control circuit is electrically connected to the first conductive member, and the potential of the first conductive member becomes lower than a predetermined reference potential. If the voltage generator lowers the voltage value applied to the second conductive member, other elements such as a transistor and a thyristor GTO can be used.

  Further, although an example in which an inverter of a logic circuit is used as detection means has been described, the control circuit is electrically connected to the first conductive member, and the potential of the first conductive member is lower than a predetermined reference potential. If the voltage generator reduces the voltage value applied to the second conductive member in this case, for example, another element such as a transistor can be used.

  As described above, the electric fence according to the present invention is electrically connected to the first conductive member, and the voltage generator is second when the potential of the first conductive member becomes lower than the predetermined reference potential. Since a control circuit for reducing the voltage value applied to the conductive member is provided, the first conductive member is grounded at a desired position using a connecting device, and the potential of the first conductive member is made lower than a predetermined reference potential. Therefore, the voltage value applied to the second conductive member is reduced, that is, the voltage generator stops generating the voltage, so that even if a person touches the second conductive member whose voltage value has decreased, You can enter and exit the fence.

  Further, as shown in FIG. 2, the first conductive member (first electric wire) surrounds the field like the second conductive member (second electric wire). It is not necessary to move to a specific other place at the place where the first electric wire is grounded with an appliance, and even if it touches the second electric wire, it enters or leaves the fence without electric shock. be able to.

Therefore, the electric fence of the present invention can pass through at a desired position without a person being electrocuted.
Therefore, with the electric fence of the present invention, when a person enters or exits a field surrounded by the electric fence, it is not necessary to bother to move to the position of a gate or the like like a conventional electric fence, and it is connected at a desired position. By simply grounding the first electric wire using a tool, you can enter and exit the field surrounded by the electric fence without electric shock on the spot, so it is safe and easy to manage the field weeding and fertilizing, And it can be performed in a short time.

  Therefore, time and labor can be greatly reduced, which is extremely beneficial for agricultural management.

  In the electric fence control method, power supply device, voltage generator, and control circuit of the present invention, the voltage generator is also connected to the second conductive member when the potential of the first conductive member becomes lower than a predetermined reference potential. Since the effect | action of reducing the voltage value applied to is exhibited, the electric fence which has the above effects can be provided.

DESCRIPTION OF SYMBOLS 1 Electric fence 2 1st electric wire 3 2nd electric wire 3A 4th-stage bare electric wire 3B 3rd-stage bare electric wire 3C 2nd-stage bare electric wire 3D 1st-stage bare electric wire 4 Vertical connection 5 Power supply device 6 Output terminal 7 Output line 8 Wild animal 9 Underground 10 Ground rod 11 Ground wire 12 Ground terminal 15 Covered wire 21A 4th stage insulator 21B 3rd stage insulator 21C 2nd stage insulator 21D 1st stage insulator 21E 5th stage Insulator 22 Strut 23 Connecting device 23A Hook 23B Ground rod 24 Control circuit 31 Insulating material 41 Rock wall 51 Inverter 52 NPN transistor 53 Relay winding 54 Relay B contact 55 Power switch 56 Voltage generator 59 First wire terminal 60 power supply 61 PNP transistor 62 P-channel MOS field effect transistor R1 resistor

Claims (12)

A first conductive member formed around a predetermined region;
A second conductive member formed in substantially the same region as the region where the first conductive member is formed;
A voltage generator electrically connected to the second conductive member and applying a voltage to the second conductive member;
A voltage value that the voltage generator applies to the second conductive member when it is electrically connected to the first conductive member and the potential of the first conductive member becomes lower than a predetermined reference potential. An electric fence provided with a control circuit that lowers the pressure. The electric fence according to claim 1, wherein the first conductive member is positioned at a predetermined height or more from an installation surface. The electric fence according to claim 1, wherein the first conductive member is located farther from an installation surface than the second conductive member. The control circuit reduces a voltage value applied to the second conductive member by the voltage generator when the potential of the first conductive member becomes a ground potential. 3. The electric fence according to 3. The control circuit stops application of a voltage to the second conductive member of the voltage generator when the potential of the first conductive member becomes lower than a predetermined reference potential. Or the electric fence of Claim 3. The control circuit stops application of a voltage to the second conductive member of the voltage generator when the potential of the first conductive member becomes a ground potential. 3. The electric fence according to 3. The electric fence according to claim 1, claim 2, claim 3, claim 5, claim 5, or claim 6, wherein the first conductive member and the second conductive member are electric wires. When the potential of the first conductive member formed around the predetermined region is lower than the predetermined reference potential, the potential of the first conductive member is higher than the predetermined reference potential. A method for controlling an electric fence, further comprising a step of applying a low voltage value to a second conductive member formed in substantially the same region as the region where the first conductive member is formed. The method for controlling an electric fence according to claim 8, further comprising a step of grounding the first conductive member with a connection device covered with an insulating material. A voltage generator that is electrically connected to a second conductive member formed around a predetermined region and applies a voltage to the second conductive member;
The second conductive member is electrically connected to the first conductive member formed in substantially the same region as the region where the second conductive member is formed, and the potential of the first conductive member is lower than a predetermined reference potential. And a control circuit that reduces a voltage value applied to the second conductive member by the voltage generator. The electric potential of the first conductive member formed in the substantially same region as the region where the second conductive member is formed is electrically connected to the second conductive member formed around the predetermined region. When the electric potential of the first conductive member is lower than the reference potential of the electric fence, the electric potential of the first conductive member is applied with a lower voltage value to the second conductive member than when the electric potential of the predetermined electric potential or more is applied. Voltage generator. When the first conductive member is electrically connected to the first conductive member formed around the predetermined region and the potential of the first conductive member is lower than the predetermined reference potential, the first conductive member is An electric fence control circuit for lowering a voltage value applied to the second conductive member from a voltage generator connected to the second conductive member formed in the substantially same region as the formed region.

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