Kinetic energy harvesting methods and apparatus

An electronic device comprising:

• a processor configured to operate the electronic device;
• a sensor in communication with the processor;
• a battery configured to provide power to the processor and the sensor;
• a first tubular magnet housing including:
• a first end-cap magnet configured to connect to a first end of the first tubular magnet housing such that a north-pole of the first end-cap magnet faces the first end,
• a second end-cap magnet configured to connect to a second end of the first tubular magnet housing such that a south-pole of the second end-cap magnet faces the second end,
• a first wire coil configured to be connected to the first tubular magnet housing between the first end and a center of the first tubular magnet housing,
• a second wire coil configured to be connected to the first tubular magnet housing between the second end and the center of the first tubular magnet housing,
• a first central magnet configured to be located within the first tubular magnet housing between the first end and the second end such that a north-pole of the first central magnet faces the north-pole of the first end-cap and a south-pole of the central magnet faces the south-pole of the second end-cap causing the first central magnet to be suspended between the first and second end-caps of the first tubular magnet housing, and
• a first ferrous substance located on a first side of the first tubular magnet housing;
• and
• a second tubular magnet housing including:
• a first end-cap magnet configured to connect to a first end of the second tubular magnet housing such that a north-pole of the first end-cap magnet faces the first end,
• a second end-cap magnet configured to connect to a second end of the second tubular magnet housing such that a south-pole of the second end-cap magnet faces the second end,
• a first wire coil configured to be connected to the second tubular magnet housing between the first end and a center of the second tubular magnet housing,
• a second wire coil configured to be connected to the second tubular magnet housing between the second end and the center of the second tubular magnet housing,
• a second central magnet configured to be located within the second tubular magnet housing between the first end and the second end such that a north-pole of the second central magnet faces the north-pole of the first end-cap and a south-pole of the second central magnet faces the south-pole of the second end-cap causing the second central magnet to be suspended between the first and second end-caps of the magnet housing, and
• a second ferrous substance located on a first side of the second tubular magnet housing,
• wherein the first ferrous substance is located on the first side of the first tubular magnet housing that is opposite of a second side facing the second tubular magnet housing, and the second ferrous substance is located on the first side of the second tubular magnet housing that is opposite of a second side facing the first tubular magnet housing, and
• wherein the first tubular magnet housing and the second tubular magnet housing are configured to generate a current to charge the battery.