JP4778113B1 - Electric fence and control method thereof, electric fence power supply device and electric fence control circuit - Google Patents

Abstract

An electric fence, a method for controlling the electric fence, a power supply device for the electric fence, a voltage generator for the electric fence, and a control circuit for the electric fence that can pass through a desired position without electric shock.
When a power switch 55 is "ON" and a detection electric signal voltage generator 23 is not connected to a fence line 3, only a first voltage from a voltage generator 56 is applied to the fence line 3. Is given. The generated first voltage is applied to the fence wire 3 (bare wire (3A to 3D)), and when a person or a wild animal comes into contact with the bare wire (3A to 3D), it receives an impact. A hook-shaped plus terminal 23A of the detection electric signal voltage generator 23 is hooked on the bare wire 3A, a rod-like minus terminal 23B is inserted into the ground, and a second voltage is applied to the bare wire 3A. As a result, the relay winding 53 is excited and the relay B contact 54 is opened, so that the power supply voltage is not applied to the voltage generator 56 and the generation of the first voltage is stopped.
[Selection] Figure 1

Description

  The present invention relates to an electric fence and a control method thereof, a power supply device for the electric fence, and a control circuit for the electric fence. Specifically, for example, the present invention relates to an electric fence for protecting a field from wild animals, a control method thereof, a power supply device 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. 9 shows a conventional electric fence.
As shown in FIG. 9, the conventional electric fence 100 includes a bare electric wire (103 a to 103 d) that is locked and stretched by an insulator (101 a to 101 d) attached to a column 102 that is 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. 10, since a person contacts a bare electric wire (103a-103d), it receives an electric shock and cannot enter a field easily.

  Therefore, there is a case where a tool called a gate as shown in FIG.

  As shown in FIG. 11, 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. 12, 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. 13, the hand-held instrument 120 formed of an insulating material is grasped by hand, the hook-shaped metal piece 121 is removed from the metal fitting 125, and power is supplied. Cut off.

  Then, as shown in FIG. 13, a person enters the field from the place where the gate is removed.

  Further, 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 location 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, move to the place where the power supply device 105 is installed along the bare wires (103a to 103d) of the electric fence 100, and turn off the power switch 155 of the power supply device 105. 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 to be used 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 includes a conductive member formed around a predetermined region, and is electrically connected to the conductive member and applies a first voltage to the conductive member. And a first voltage that is electrically connected to the voltage generator and has a voltage value lower than the first voltage applied to the conductive member. And a control circuit for lowering the voltage value of.

  Here, control that is electrically connected to the voltage generator and reduces the voltage value of the first voltage when a second voltage having a voltage value lower than the first voltage is applied to the conductive member. Because the voltage value of the first voltage applied to the conductive member is reduced simply by applying the second voltage to the conductive member at an arbitrary place depending on the circuit, the person touches the conductive member whose voltage value has been reduced. Can also enter and exit the fence.

  Further, the control circuit is electrically connected to a voltage generator electrically connected to the conductive member, so that, for example, compared to control of the control circuit by a radio signal, the obstacle is not anxious. Can be controlled reliably.

  In the present invention, the voltage value of the first voltage before being lowered is large enough to receive an impact when a human or wild animal touches the conductive member. The voltage value of the applied second voltage is such a magnitude that the person or wild animal does not receive an impact even if it touches the conductive member.

  In the electric fence according to the present invention, the control circuit may be configured to apply the first voltage to the conductive member of the voltage generator when a second voltage having a voltage value lower than the first voltage is applied to the conductive member. The application can be stopped.

  In this case, the application of the first voltage to the conductive member of the voltage generator is stopped only by applying the second voltage to the conductive member at an arbitrary place, so that it enters or leaves the fence. Can do.

  Further, in the electric fence of the present invention, when the conductive member is an electric wire, the electric fence is installed more easily than the plate-like conductive member even when the electric fence is installed at a location with many undulations or steps, and the influence of wind is small. .

  In order to achieve the above object, according to the electric fence control method of the present invention, the second voltage having a voltage value lower than the first voltage applied to the conductive member formed around the predetermined region is obtained. A step of applying a lower voltage value to the conductive member when applied to the conductive member than before the second voltage is applied to the conductive member;

  Here, even if a person touches the conductive member whose applied voltage value has decreased by simply applying the second voltage to the conductive member at any place by such a process, it enters the fence or the fence. Can get out of.

  In addition, when the method for controlling an electric fence according to the present invention includes a step of applying a second voltage to the conductive member while grounding the conductive member and the ground by the voltage applying tool, one of the voltage applying tools is grounded and the other Therefore, the second voltage can be easily applied to the conductive member at an arbitrary place.

  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 conductive member formed around a predetermined region and applies a first voltage to the conductive member. And a first voltage that is electrically connected to the voltage generator and has a voltage value lower than the first voltage applied to the conductive member. And a control circuit for lowering the voltage value of.

  Here, when a second voltage having a voltage value lower than the first voltage is applied to the conductive member, the second voltage is applied to the conductive member at an arbitrary place by a control circuit that reduces the voltage value of the first voltage. Since the voltage value of the first voltage applied to the conductive member is reduced simply by applying the voltage of, even if a person touches the conductive member whose voltage value has been reduced, it enters or exits the fence. be able to.

  In order to achieve the above object, the voltage generator for an electric fence according to the present invention is electrically connected to a conductive member formed around a predetermined area and is applied to the first conductive member. When a second voltage having a voltage value lower than the first voltage is applied to the conductive member, a lower voltage value is applied to the conductive member than before the second voltage is applied to the conductive member. Is.

  Here, when a second voltage having a voltage value lower than the first voltage applied to the conductive member is applied to the conductive member, the conductive member is more than before the second voltage is applied to the conductive member. By applying a low voltage to the conductive member at any place, even if a person touches the conductive member with the reduced voltage value, it can enter or exit the fence. can do.

  In order to achieve the above object, the electric fence control circuit of the present invention is a voltage that is electrically connected to a conductive member formed around a predetermined region and applies a first voltage to the conductive member. A voltage that is electrically connected to the generator and lowers the voltage value of the first voltage when a second voltage having a voltage value lower than the first voltage is applied to the conductive member. is there.

  Here, when a second voltage having a voltage value lower than the first voltage is applied to the conductive member, the voltage value of the first voltage is lowered to cause the second voltage to be applied to the conductive member at an arbitrary place. Just by applying a voltage, the voltage value of the first voltage applied to the conductive member decreases, so even if a person touches the conductive member whose voltage value has decreased, it should enter or exit the fence. Can do.

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 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 a 2nd voltage is applied to the bare electric wire of the electric fence of this invention, and a person scratches 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 graph which showed the 1st voltage applied to the electric fence of this invention. It is the schematic graph which showed the 1st voltage and 2nd voltage applied redundantly to the electric fence of this invention. 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. It is the schematic which shows the conventional electric fence using the gate shown by FIG. 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 provide an 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, the electric fence 1 of the present invention includes a fence wire (an example of a conductive member) 3 stretched around a support column 22 erected around a predetermined area (for example, a field area). Here, the fence wire 3 is a bare electric wire.

  In the present embodiment, the fence wire 3 is composed of four bare wires (3A to 3D). As shown in FIG. 1, the four bare wires (3A to 3D) have a predetermined length. They are separated and stretched approximately in parallel.

  That is, the first bare wire (3D) closest to the ground surface is located at a height of about 20 cm from the ground surface, and the second bare wire (3C) is about upward from the bare wire (3D). Located at a height of 20 cm, 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 bare. It is located at a height of about 50 cm upward from the electric wire (3B).

  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.

  Also, the first-stage bare electric wire 3D constituting the fence wire 3 is locked to the first-stage insulator 21D from the ground surface, and the second-stage bare electric wire 3C is locked to the second-stage insulator 21C. The third-stage bare electric wire 3B is engaged with the third-stage insulator 21B, and the fourth-stage bare electric wire 3A is engaged with the fourth-stage insulator 21A and is stretched on the column 22 respectively.

  In addition, 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 fence line 3 and applies a first voltage to the fence line 3. The output line 7 is electrically connected to the fence line 3.

  In addition, the electric fence 1 of the present invention is electrically connected to the voltage generator 56, and the first fence when the second voltage having a voltage value lower than the first voltage is applied to the conductive member. A control circuit 24 for reducing the voltage value of the voltage is provided.

  Moreover, as a method of applying the second voltage to any of the four bare wires (3A to 3D), for example, an electric signal voltage generator for detection (an example of a voltage applying instrument) shown in FIG. ) A plus terminal 23A at one end of 23 is brought into contact with any of the four bare wires (3A to 3D), and a minus terminal formed of a conductive material at the other end of the electric signal voltage generator 23 for detection. 23B is inserted in the ground, and a method of applying the second voltage to any of the four bare wires (3A to 3D) while grounding between any of the four bare wires (3A to 3D) and the ground is given. It is done.

  Here, the plus terminal connected to one end of the electric signal voltage generator for detection does not necessarily have to have a hook shape as shown in FIG. 1, and may have a clip shape, for example. Further, the minus terminal formed of a conductive material at the other end of the electric signal voltage generator for detection does not necessarily have a rod shape as shown in FIG. 1, for example, it can be a plate shape or sharpened. May be.

  The positive side of the DC voltage from the battery 16 is connected to the positive terminal 23A of the electrical signal voltage generator 23 for detection, and the negative side of the battery 16 is connected to the negative terminal. A surge absorber (surge protection device) 17 is connected in parallel to the battery 16.

  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.

  In the voltage generator 56, the winding end 43 of the secondary winding of the output transformer 42 is connected to the fence line 3 through the output terminal 6 and the output line 7 as shown in FIG. 1.

  The winding start 44 of the secondary winding of the output transformer 42 is connected to one end of a surge absorber 45, and the other end of the surge absorber 45 is connected to the ground terminal 12.

  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 operational amplifier 51 which is a non-inverting amplifier.

  The winding start 44 of the secondary winding of the output transformer 42 is connected to the operational amplifier 51 through the resistor R1.

The base of the NPN transistor 52 is connected to the output point of the operational amplifier 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.
Further, the B contact 54 of the relay is connected to the power input point 46 of the voltage generator 56.

  Here, although the electric wire is mentioned as an example of the conductive member, the electric fence is electrically connected to the conductive member formed around the predetermined region and the conductive member, and the first voltage is applied to the conductive member. A voltage generator to be applied, and a voltage value of the first voltage when electrically connected to the voltage generator and a second voltage having a voltage value lower than the first voltage is applied to the conductive member If it is provided with a control circuit that lowers the voltage, it is not necessarily an electric wire, and for example, a conductive plate may be used.

  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 electric wire (3A to 3D), the deer or shark will have an arrow in FIG. The output terminal 6 of the power supply device 5, the output line 7, the bare wire 3C, the vertical connection 4, the bare wires (3A, 3B and 3D), the wild animals 8, such as deer and moth, the underground 9, the ground rod 10, A high current (impact current) flows through the ground wire 11 and the ground terminal 12 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 according to the present invention may not be completely surrounded by the fence line 3 but may be another object such as a rock wall 41.

  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 operation 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 electric signal voltage generator for detection 23 is not connected to the fence line 3, the electric signal for detection from the battery 16 is connected to the fence line 3. A voltage (second voltage) is not applied. Further, only the impact voltage (first voltage) from the voltage generator 56 is applied to the fence line 3.

Further, since the first voltage is short-circuited by the surge absorber 45, the input to the operational amplifier 51 is small and the output of the operational amplifier 51 is also small.
Thus, since the NPN transistor 52 is “off”, the relay winding 53 is not excited. Accordingly, since the B contact 54 of the relay is closed (conducted), the voltage of the power source 60 is applied to the impact voltage generator 56 through the B contact 54 of the relay, and a first voltage is generated.

  FIG. 7 is a schematic graph showing the first voltage applied to the electric fence of the present invention. As shown in FIG. 7, the first voltage applied to the electric fence is approximately 1 second apart. It is the generated pulsed electricity. This pulse width (generation time) is about 0.1 ms, the voltage at no load is 8000 V, and the period is about 1 second.

The generated first voltage is applied to the fence wire 3 (bare wire (3A to 3D)), and when a wild animal or the like comes into contact with the bare wire (3A to 3D), the wild animal receives an impact and dissipates.
Moreover, since a person will also receive an impact, if it contacts a bare electric wire (3A-3D), it will crawl between bare electric wires (3A-3D) and cannot penetrate | invade in a fence.

  Next, FIG. 4 is a schematic diagram showing a state in which a second voltage is applied to the bare wire of the electric fence of the present invention and a person scratches the electric fence.

  As shown in FIG. 4, the hook-shaped plus terminal 23A of the detection electric signal voltage generator 23 is hooked on the bare wire 3A, and the rod-like minus terminal 23B of the detection electric signal voltage generator is inserted into the ground. That is, the detection electric signal voltage generator 23 is connected between the bare wire 3A and the ground.

  That is, the DC detection electric signal voltage (second voltage) from the battery 16 is applied to the bare wire 3A. Then, the positive detection electric signal voltage (second voltage) and the impact voltage (first voltage) are applied to the bare wire 3A in an overlapping manner.

A surge absorber 17 is connected to the battery 16 in parallel.
The first voltage is short-circuited by the surge absorber 17. The first voltage at this time is suppressed to a voltage lower than the limit voltage of the surge absorber 17. FIG. 8 is a schematic graph showing the first voltage and the second voltage applied redundantly to the electric fence of the present invention, and this graph shows the voltage waveform of the bare wire at this time. .

  The second voltage is transmitted through the bare wire as indicated by the arrow shown in FIG. 4, and is transmitted to the winding end 43 of the secondary winding of the output transformer 42 of the voltage generator 56 of the power supply device 5. A second voltage is generated between the winding start 44 of the secondary winding of the transformer 42 and the ground terminal 12.

Since the surge absorber 45 is connected between the winding start 44 of the secondary winding and the ground terminal 12 as described above, the first voltage is short-circuited by the surge absorber 45. That is, the surge absorber 45 is short-circuited only when the first voltage is applied.
Therefore, only the second voltage is detected at both ends of the surge absorber 45.

  The second voltage appearing in the surge absorber 45 is guided to the operational amplifier 51 via the resistor R1 and is non-inverted and amplified. The amplified second voltage then flows to the base of the NPN transistor 52, whereby a collector current flows and excites the relay winding 53.

Then, the B contact 54 of the relay is opened (non-conducting), the power supply voltage is not applied to the voltage generator 56, and the generation of the first voltage is stopped.
As a result, the first voltage is not applied to the fence line 3, and only the second voltage is applied.

  Here, the second voltage is lower than the first voltage and is usually around 6V to 40V, and even if a person touches the fence line 3 to which the second voltage is applied, no electric shock is felt.

  In this way, the hook-shaped plus terminal 23A of the detection electric signal voltage generator 23 is hooked on the bare electric wire 3A at an arbitrary place, and the minus terminal 23B formed of the conductive material of the detection electric signal voltage generator 23 is obtained. Since the voltage generator 56 does not generate the first voltage while the second voltage is applied to the bare wire 3A while being grounded between the bare wire 3A and the ground, as shown in FIG. Thus, during this time, a person can crawl the fence line 3 without electric shock and enter the field to perform fertilization, weeding, or the like.

  Then, when fertilization, weeding, etc. are completed, the person scrubs and dive the fence line 3 without electric shock again, and comes out of the fence line 3 and removes the electric signal voltage generator 23 for detection, as shown in FIG. It returned to the correct circuit state.

  At this time, the second voltage is not applied from the battery 16 to the bare wire 3A. Then, the input of the operational amplifier 51 of the control circuit 24 becomes low and the output becomes low.

Therefore, since the NPN transistor 52 is “off”, the relay winding 53 is not excited. Accordingly, since the relay B contact 54 is closed (conducted), the voltage of the power source 60 is applied to the voltage generator 56 through the relay B contact 54 to generate the first voltage.
Again, the first voltage generated by the voltage generator 56 is applied to the fence line 3 and operates as an electric fence that can repel wild animals and the like.

  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.

  In the present embodiment, the example in which the relay is used as the switching element has been described. However, the control circuit is electrically connected to the voltage generator and has a second voltage value lower than the first voltage. If the voltage value of the first voltage is lowered when a voltage is applied to the conductive member, other elements such as a transistor and a thyristor GTO can be used.

  Further, in this embodiment, a DC voltage is used as the second voltage using a battery. However, when the second voltage is applied to the fence line, even if a person touches the fence line, there is no electric shock. If it is a voltage, it does not necessarily have to be a DC voltage. For example, the second voltage may be an alternating voltage generated from a transmitter, a low-frequency oscillation voltage, a rectangular wave voltage, or the like, or may be a pulsed voltage.

  As described above, the electric fence of the present invention is electrically connected to the voltage generator, and the first fence is applied when a second voltage having a voltage value lower than the first voltage is applied to the conductive member. Since the control circuit for reducing the voltage value of the first voltage is provided, the voltage value of the first voltage applied to the conductive member is reduced simply by applying the second voltage to the conductive member at a desired position. Even if a person touches a conductive member whose value has decreased, the person can enter or exit the fence.

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 a voltage at a desired position can be obtained. By simply applying the second voltage to the conductive member (fence line) using the applicator, it is possible to enter and leave the field surrounded by the electric fence without electric shock at that location.

  Therefore, the electric fence of the present invention makes it safe and easy to manage weeding and fertilizing fields, etc., and can be performed in a short time, greatly reducing time and labor, and is extremely beneficial for agricultural management. .

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

DESCRIPTION OF SYMBOLS 1 Electric fence 3 Fence line 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 6 Output terminal 7 Output line 8 Wild animal 9 Underground 10 Ground rod 11 Ground wire 12 Ground terminal 16 Battery 17 Surge absorber 21A 4th stage insulator 21B 3rd stage insulator 21C 2nd stage insulator 21D 1st stage insulator 22 Prop 23 Electric signal voltage generator for detection 23A Positive terminal 23B Negative terminal 24 Control circuit 41 Rock wall 42 Output transformer 43 End of secondary winding 44 End of secondary winding 45 Surge absorber 46 Power input point 51 Operational amplifier 52 NPN transistor 51 Operational amplifier 52 NPN type Transistor 53 Relay winding 54 Relay B contact 55 Power switch 56 Voltage generator 60 Power supply 61 NP-type transistor 62 P-channel MOS field-effect transistor R1 resistor

Claims (7)

A conductive member formed around a predetermined area;
A voltage generator electrically connected to the conductive member and applying a first voltage to the conductive member;
When the second voltage having a voltage value lower than the first voltage is electrically connected to the voltage generator and applied to the conductive member, the voltage value of the first voltage is lowered. An electric fence provided with a control circuit. The control circuit stops the application of the first voltage to the conductive member of the voltage generator when a second voltage having a voltage value lower than the first voltage is applied to the conductive member. The electric fence according to claim 1. The electric fence according to claim 1, wherein the conductive member is an electric wire. When the second voltage having a voltage value lower than the first voltage applied to the conductive member formed around the predetermined region is applied to the conductive member, the second voltage is applied to the conductive member. An electric fence control method comprising a step of applying a lower voltage value to the conductive member than before being performed. The electric fence control method according to claim 4, further comprising a step of applying the second voltage to the conductive member while grounding the conductive member and the ground with a voltage application tool. A voltage generator that is electrically connected to a conductive member formed around a predetermined region and applies a first voltage to the conductive member;
When the second voltage having a voltage value lower than the first voltage is electrically connected to the voltage generator and applied to the conductive member, the voltage value of the first voltage is lowered. An electric fence power supply comprising a control circuit. A voltage generator that is electrically connected to a conductive member formed around a predetermined region and applies a first voltage to the conductive member, and has a voltage value lower than the first voltage. The voltage value of the first voltage is reduced when a second voltage having a voltage is applied to the conductive member.
Electric fence control circuit.

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