Electric device and electric field barrier forming device

A field forming device for forming an electric field barrier for repelling fish having Lorenzini organs, the field forming device comprising:

• a barrier group comprising a plurality of electronic fish repelling devices;
• each electronic fish repelling device for repelling fish with Lorenzini organs,
• each electronic fish repelling device comprising:
• a generator having a power supply and output terminals including a first output terminal and a second output terminal, for converting a DC voltage supplied from the power supply to an AC voltage having an amplitude of less than 100V and outputting the AC voltage from the output terminals;
• at least one electric wire, one or each of which is connected to one or both of the first output terminal and the second output terminal;
• and,
• an electric circuit comprising a power switch, the generator and the at least one electric wire, the electric circuit for turning on and turning off am output from the power supply, the power supply supplying a DC voltage when the first output terminal and the second output terminal are electrically connected via the seawater,
• wherein the generator outputting a composite waveform pattern of the AC voltage output from the output terminals, the composite waveform pattern comprising a a plurality of superimposed types of AC waveforms, and
• wherein the composite waveform pattern is one of
• (1) a first waveform pattern in which a unit wave having a first period and a unit wave having a second period shorter than the first period are alternately output,
• (2) a second waveform pattern in which a first amplitude unit wave and a second amplitude unit wave having an amplitude smaller than the first amplitude unit wave are alternately output, and
• (3) a third waveform pattern in which a unit wave of the first waveform and a second unit wave of a different unit wave from the unit wave of the first waveform are alternately output;
• wherein (1) the at least one electric wire of each electronic device is a pair of electric wires each having one end connected to each of the first output terminal and the second output terminal;
• (2) both the other ends of the plurality of pairs of electric wires are respectively arranged along a vertical or substantially vertical direction in the seawater;
• and (3) all the other ends of the plurality of pairs of electric wires are arranged side by side in a direction crossing the vertical or substantially vertical direction;
• and,
• a group controller that controls waveforms of AC voltages output from generators of the plurality of electronic devices,
• wherein the group controller controls at least one waveform and at least one phase among the waveforms of each AC voltage output by each generator to a waveform or phase different from other waveforms or phases;
• wherein the generator further comprises:
• a storage that stores a plurality of patterns of AC voltage, which is output from the first output terminal and the second output terminal, having different waveforms;
• and
• a selecting switch for selecting one of the plurality of patterns of AC voltage stored in the storage;
• wherein the power switch comprises an electrical current sensor to supply a DC voltage from the power supply when the electrical current sensor detects an electrical current flowing between the first output terminal and the second output terminal;
• and
• the selecting switch selects one of the plurality of patterns of AC voltage stored in the storage according to the magnitude of the electrical current detected by the electrical current sensor.

A field forming device for forming an electric field barrier for repelling fish having Lorenzini organs, the field forming device comprising:

• a barrier group comprising a plurality of electronic fish repelling devices;
• each electronic fish repelling device for repelling fish with Lorenzini organs,
• each electronic fish repelling device comprising:
• a generator having a power supply and output terminals including a first output terminal and a second output terminal, for converting a DC voltage supplied from the power supply to an AC voltage having an amplitude of less than 100V and outputting the AC voltage from the output terminals;
• at least one electric wire, one or each of which is connected to one or both of the first output terminal and the second output terminal;
• and,
• an electric circuit comprising a power switch, the generator and the at least one electric wire, the electric circuit for turning on and turning off am output from the power supply, the power supply supplying a DC voltage when the first output terminal and the second output terminal are electrically connected via the seawater,
• wherein the generator outputting a composite waveform pattern of the AC voltage output from the output terminals, the composite waveform pattern comprising a plurality of superimposed types of AC waveforms, and
• wherein the composite waveform pattern is one of
• (1) a first waveform pattern in which a unit wave having a first period and a unit wave having a second period shorter than the first period are alternately output,
• (2) a second waveform pattern in which a first amplitude unit wave and a second amplitude unit wave having an amplitude smaller than the first amplitude unit wave are alternately output, and
• (3) a third waveform pattern in which a unit wave of the first waveform and a second unit wave of a different unit wave from the unit wave of the first waveform are alternately output;
• wherein:
• (1) the at least one electric wire of each electronic device is a pair of electric wires each having one end connected to each of the first output terminal and the second output terminal;
• (2) the other ends of the plurality of electric wires connected to either one of the first output terminal and the second output terminal are arranged so as to gather at one point in the seawater, and the other ends of the plurality of electric wires connected to the other of the first output terminal and the second output terminal are arranged apart from each other so as to form a circumference outside the one point;
• and,
• a group controller that controls waveforms of AC voltages output from generators of the plurality of electronic devices,
• wherein the group controller controls at least one waveform and at least one phase among the waveforms of the AC voltages output from each generator to a waveform or phase different from other waveforms or phases;
• wherein the generator further comprises:
• a storage that stores a plurality of patterns of AC voltage, which is output from the first output terminal and the second output terminal, having different waveforms;
• and
• a selecting switch for selecting one of the plurality of patterns of AC voltage stored in the storage;
• wherein the power switch comprises an electrical current sensor to supply a DC voltage from the power supply when the electrical current sensor detects an electrical current flowing between the first output terminal and the second output terminal;
• and
• the selecting switch selects one of the plurality of patterns of AC voltage stored in the storage according to the magnitude of the electrical current detected by the electrical current sensor.

An electronic device for repelling fish with Lorenzini organs, comprising:

• a generator having a power supply and output terminals including a first output terminal and a second output terminal, for converting a DC voltage supplied from the power supply to an AC voltage and outputting the AC voltage from the output terminals;
• at least one electric wire, one or each of which is connected to one or both of the first output terminal and the second output terminal, and at least one or more coils are formed;
• and,
• a power switch that forms an electric circuit together with the generator and the at least one electric wire to turn on and off the output from the power supply, and that causes the power supply to supply a DC voltage when the first output terminal and the second output terminal are electrically connected via the seawater;
• wherein the generator further comprises:
• a storage that stores a plurality of patterns of AC voltage, which is output from the first output terminal and the second output terminal, having different waveforms;
• and
• a selecting switch for selecting one of the plurality of patterns of AC voltage stored in the storage;
• wherein the power switch comprises an electrical current sensor to supply a DC voltage from the power supply when the electrical current sensor detects an electrical current flowing between the first output terminal and the second output terminal;
• and
• the selecting switch selects one of the plurality of patterns of AC voltage stored in the storage according to the magnitude of the electrical current detected by the electrical current sensor.

A magnetic field barrier forming device for forming a magnetic field barrier for repelling fish having Lorenzini organs, the magnetic field barrier forming device comprising:

• an electronic device group comprising a plurality of electronic devices, each of which is the electronic device for repelling fish with Lorenzini organs, comprising:
• a generator having a power supply and output terminals including a first output terminal and a second output terminal, for converting a DC voltage supplied from the power supply to an AC voltage and outputting the AC voltage from the output terminals;
• at least one electric wire, one or each of which is connected to one or both of the first output terminal and the second output terminal, and at least one or more coils are formed;
• and,
• a power switch that forms an electric circuit together with the generator and the at least one electric wire to turn on and off the output from the power supply, and that causes the power supply to supply a DC voltage when the first output terminal and the second output terminal are electrically connected via the seawater,
• wherein:
• (1) the at least one electric wire of each electronic device is a pair of electric wires each having one end connected to each of the first output terminal and the second output terminal;
• (2) both the other ends of the plurality of pairs of electric wires are respectively arranged along a vertical or substantially vertical direction in the seawater;
• and (3) all the other ends of the plurality of pairs of electric wires are arranged side by side in a direction crossing the vertical or substantially vertical direction;
• and,
• a group controller that controls waveforms of AC voltages output from generators of the plurality of electronic devices;
• wherein the generator further comprises:
• a storage that stores a plurality of patterns of AC voltage, which is output from the output terminals, having different waveforms;
• and
• a selecting switch for selecting one of the plurality of patterns of AC voltage stored in the storage;
• wherein the power switch comprises an electrical current sensor to supply a DC voltage from the power supply when the electrical current sensor detects an electrical current flowing between the first output terminal and the second output terminal;
• and
• the selecting switch selects one of the plurality of patterns of AC voltage stored in the storage according to the magnitude of the electrical current detected by the electrical current sensor.

A magnetic field barrier forming device for forming a magnetic field barrier for repelling fish having Lorenzini organs, the magnetic field barrier forming device comprising:

• an electronic device group comprising a plurality of electronic devices, each of which is the electronic device for repelling fish with Lorenzini organs, comprising:
• a generator having a power supply and output terminals including a first output terminal and a second output terminal, for converting a DC voltage supplied from the power supply to an AC voltage and outputting the AC voltage from the output terminals;
• at least one electric wire, one or each of which is connected to one or both of the first output terminal and the second output terminal, and at least one or more coils are formed;
• and
• a power switch that forms an electric circuit together with the generator and the at least one electric wire to turn on and off the output from the power supply, and that causes the power supply to supply a DC voltage when the first output terminal and the second output terminal are electrically connected via the seawater;
• wherein:
• (1) the at least one electric wire of each electronic device is a pair of electric wires each having one end connected to each of the first output terminal and the second output terminal;
• (2) the other ends of the plurality of electric wires connected to either one of the first output terminal and the second output terminal are arranged so as to gather at one point in the seawater, and the other ends of the plurality of electric wires connected to the other of the first output terminal and the second output terminal are arranged apart from each other so as to form a circumference outside the one point;
• and,
• a group controller that controls waveforms of AC voltages output from generators of the plurality of electronic devices;
• wherein the generator further comprises:
• a storage that stores a plurality of patterns of AC voltage, which is output from the output terminals, having different waveforms;
• and
• a selecting switch for selecting one of the plurality of patterns of AC voltage stored in the storage;
• wherein the power switch comprises an electrical current sensor to supply a DC voltage from the power supply when the electrical current sensor detects an electrical current flowing between the first output terminal and the second output terminal;
• and
• the selecting switch selects one of the plurality of patterns of AC voltage stored in the storage according to the magnitude of the electrical current detected by the electrical current sensor.