MAGNETIC CRASH SENSOR
First Claim
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1. A magnetic crash sensor, comprising:
- a. at least one coil in magnetic communication with at least a portion of a vehicle, wherein at least one of said portion of said vehicle and a location of said at least one coil is susceptible to deformation responsive to a crash;
b. a signal source operatively associated with said at least one coil, wherein said signal source provides for generating a first time-varying signal, and said first time-varying signal is operatively coupled to said at least one coil so as to cause said at least one coil to generate a magnetic field; and
c. at least one circuit, wherein said at least one circuit comprises at least one sense resistor in series with said at least one coil, said current through said at least one coil and through said at least one sense resistor is responsive to said first time-varying signal, said first time-varying signal comprises a time-varying voltage, said current through said at least one coil and through said at least one sense resistor is also responsive to a magnetic condition of said at least one coil, and said magnetic condition is responsive to said magnetic communication of said at least one coil with said portion of said vehicle, and said at least one circuit generates a second signal responsive to a voltage across said at least one sense resistor.
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Abstract
A magnetic field is generated by at least one coil in magnetic communication with at least a portion of a vehicle responsive to a first time-varying signal operatively coupled to the at least one coil in series with a sense resistor. A second signal is generated responsive to a voltage across the sense resistor and is response to a magnetic condition of the at least one coil, which is response to the magnetic communication of the at least one coil with the portion of the vehicle.
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Citations
22 Claims
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1. A magnetic crash sensor, comprising:
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a. at least one coil in magnetic communication with at least a portion of a vehicle, wherein at least one of said portion of said vehicle and a location of said at least one coil is susceptible to deformation responsive to a crash; b. a signal source operatively associated with said at least one coil, wherein said signal source provides for generating a first time-varying signal, and said first time-varying signal is operatively coupled to said at least one coil so as to cause said at least one coil to generate a magnetic field; and c. at least one circuit, wherein said at least one circuit comprises at least one sense resistor in series with said at least one coil, said current through said at least one coil and through said at least one sense resistor is responsive to said first time-varying signal, said first time-varying signal comprises a time-varying voltage, said current through said at least one coil and through said at least one sense resistor is also responsive to a magnetic condition of said at least one coil, and said magnetic condition is responsive to said magnetic communication of said at least one coil with said portion of said vehicle, and said at least one circuit generates a second signal responsive to a voltage across said at least one sense resistor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification