WIRELESS SOURCELESS SENSOR
First Claim
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1. A wireless sourceless sensor, comprising:
- an electrodynamic generator adapted to induce a first electrical signal in response to a substantially planar movement of a carrier, a first magnet, or a second magnet between a first position and a second position that causes a change in a magnetic field direction in the carrier, the substantially planar movement caused by an event in a vehicle;
where the carrier comprises a metal core and a wire loop wrapped around the metal core, the first magnet has a first magnetic polarity, and the second magnet has a second magnetic polarity, the second magnet positioned such that the second magnetic polarity is substantially opposite of the first magnetic polarity;
a power conditioning circuit electrically coupled to the electrodynamic generator, the power conditioning circuit adapted to rectify and regulate the first electrical signal into a second electrical signal, the second electrical signal comprising a substantially constant voltage;
an encryption circuit electrically coupled to the electrodynamic generator and the power conditioning circuit, the encryption circuit sourced by the second electrical signal and adapted to encode a unique message in a data packet; and
a radio frequency transmitter electrically coupled to the encryption circuit, the radio frequency transmitter sourced by the second electrical signal and adapted to transmit the data packet.
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Abstract
A self-powered sensor detects or measures an event by converting one form of energy into another form. The converted energy may be conditioned and regulated to drive a wireless transmitter and encoder. A receiver may detect and validate a received message. If validated, the message may be processed or decrypted and processed to determine what has been identified or requested.
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Citations
25 Claims
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1. A wireless sourceless sensor, comprising:
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an electrodynamic generator adapted to induce a first electrical signal in response to a substantially planar movement of a carrier, a first magnet, or a second magnet between a first position and a second position that causes a change in a magnetic field direction in the carrier, the substantially planar movement caused by an event in a vehicle;
where the carrier comprises a metal core and a wire loop wrapped around the metal core, the first magnet has a first magnetic polarity, and the second magnet has a second magnetic polarity, the second magnet positioned such that the second magnetic polarity is substantially opposite of the first magnetic polarity;a power conditioning circuit electrically coupled to the electrodynamic generator, the power conditioning circuit adapted to rectify and regulate the first electrical signal into a second electrical signal, the second electrical signal comprising a substantially constant voltage; an encryption circuit electrically coupled to the electrodynamic generator and the power conditioning circuit, the encryption circuit sourced by the second electrical signal and adapted to encode a unique message in a data packet; and a radio frequency transmitter electrically coupled to the encryption circuit, the radio frequency transmitter sourced by the second electrical signal and adapted to transmit the data packet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method, comprising:
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inducing a first electrical signal in response to a substantially planar movement between a first position and a second position that causes a change in a magnetic field direction, the substantially planar movement caused by an event in a vehicle; conditioning the first electrical signal to a second electrical signal, the second electrical signal comprising a substantially constant voltage; sourcing an encryption and a transmission process with the second electrical signal; encoding a unique message in a data packet; and transmitting the data packet. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A wireless sourceless sensor, comprising:
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an electrodynamic generator adapted to induce a first electrical signal in response to a substantially planar movement of a magnet carrier between a first position and a second position that causes a change in a magnetic field direction in an assembly, the assembly comprising a bobbin and a wire coil wrapped around the bobbin, and the planar movement caused by an engagement or a release of a belt buckle;
where the magnet carrier comprises a first magnet with a first magnetic polarity and a second magnet with a second magnetic polarity, the second magnet positioned such that the second magnetic polarity is substantially opposite of the first magnetic polarity;a power conditioning circuit electrically coupled to the electrodynamic generator, the power conditioning circuit adapted to rectify and regulate the first electrical signal into a second electrical signal, the second electrical signal comprising a substantially constant voltage; an encryption circuit electrically coupled to the electrodynamic generator and the power conditioning circuit, the encryption circuit sourced by the second electrical signal and adapted to encode a unique message in a data packet; and a radio frequency transmitter electrically coupled to the encryption circuit, the radio frequency transmitter sourced by the second electrical signal and adapted to transmit the data packet. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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Specification