Multi-factorial electronic shark repellant

Abstract

In abstract this invention is a pressure and water sealed unit small enough to be worn by a swimmer. It contains a rechargeable battery, control interface logic, digital signal generation, and amplification circuitry. It uses a ground balanced electrode system to produce electric fields in the very low impedance environment of water. These fields are organized into patterns called words. These words are presented in a hierarchal pseudo random manner to prevent target organisms from learning and adapting to them. The presentation of these words is controlled by upgradable programing stored within memory. The words evoke central nervous system (CNS) responses which result in sharks leaving the area of operation. These words represent stimuli of predators, navigation signals, noxious events, CNS interference patterns, and other sequences found to repel sharks from the protected area. Reprogrammability allows upgrades to newer sequences. The amplifier uses switching stages to multiply the battery voltage up to about one thousand times. An inversion unit provides for positive and negative signals. The switching circuit is logic level and pulse width modulation controlled. The switching typology permits micro miniaturization and efficient power consumption prolonging battery life. The unit has no user adjustable parameters except for go no-go control and shark alarm. Unit and battery status is indicated by flashing light signals. Electrode typology generates a spherical electric wave propagation pattern in water. A recharging cradle projects magnetic energy into the unit providing for automatic battery recharging and conditioning without electrical connections exposed to an aqueous environment.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of Provisional Patent Application Ser. No. 61 / 400,894, filed Aug. 3, 2010 by the present inventor.FEDERALLY SPONSORED RESEARCH[0002]Not applicable.SEQUENCE LISTING OR PROGRAM[0003]Not presented in this application.BACKGROUND[0004]1. Field of Invention[0005]The present invention relates to an electronic device that can be worn by a person to safely repel sharks from the area.[0006]2. Description of Prior Art[0007]Inventors have received many patents for devices which operate as a shark repellant. These devices use chemicals, electric and magnetic fields, and or acoustic signals. All approaches share some common issues. Most importantly, they almost all generate a repeating signal pattern whether it be an alternating current (AC), a direct current (DC) electric field, a magnetic field, or a pattern of acoustic stimuli applied to an aquatic environment via a transducer. The United States Navy also did rese...

AI Technical Summary

Benefits of technology

[0119]Magnetic charging circuit. The unit sits in a charging cradle which plugs into a wall outlet. This cradle includes the primary winding of the power transformer. The magnetic circuit of this transformer is brought close to the surface of where the unit sits within this cradle. The secondary winding of the transformer is encapsulated either in the unit or in the access hatch. The unit is so designed that when placed in this cradle, the magnetic circuit of the secondary winding makes alignment with the magnetic circuit of the primary. The only gaps in this circuit are those present

Problems solved by technology

When the shark comes into proximity of the electrical wave form (around 8 meters in diameter) it experiences non-damaging but uncontrollable muscular spasms causing it to flee the area.

His claim was that stimulation of the shark's Ampullae of Lorenzini would result in irritating muscle spasms like those claimed by Shark Shield.

After much analysis of research literature and analysis of shark nervous system anatomy, I have concluded that both of these approaches are inappropriate.

They may get some response, but I believe these inventions do not adequately address the response characteristics of the shark's nervous system.

Both approaches indicate a lack of understanding of the current literature on the function of these sensors.

The result is a very complex and anomalous response of this system.

The Shark Shield Company of above obviously does not fully understand this physiology.

It is obvious they have differing and often paradoxical responses to stimuli from differing ranges.

These electric field image invoking words are very complex.

They can confuse and interfere with navigation sensations.

They can cause operational malfunctions within the CNS.

Word patterns harmonically related to such known oscillations may very well affect proper function of the CNS resulting in confusion, disorientation, and flight.

Words may cause sensor overload.

It would be like flashing a bright flash bulb in someone's eyes causing temporary loss of sight.

Such a blanking out of this sensation would lead to abortion of attack and most likely result in flight.

With the exception of this service access, the remaining portions of the unit are totally sealed and not serviceable.

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