Security apparatus
First Claim
1. An anti-theft apparatus comprising:
- an acceleration detection unit mounted on a vehicle for detecting acceleration in a predetermined direction, whose detection result in a first detection sensitivity is used for a predetermined vehicle control;
a sensitivity switching unit for switching the detection sensitivity of the acceleration detection unit to a second detection sensitivity which is different from the first detection sensitivity when it received an anti-theft instruction for instructing prevention of theft; and
a theft judgment unit for judging whether or not the vehicle is in a theft state on the basis of the detection result of the acceleration detection unit which was switched to the second detection sensitivity by the sensitivity switching unit;
wherein the acceleration detection unit is an acceleration sensor which was disposed in a front collision air bag ECU and/or an acceleration sensor which was disposed in a side collision air bag ECU.
1 Assignment
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Accused Products
Abstract
An IG key monitor sends out an anti-theft instruction to a GAIN switching part, in case that an IG key SW (ignition key switch) was turned to an OFF state. The GAIN switching part receives the anti-theft instruction from the IG key monitor, and then, switches detection sensitivity of an acceleration sensor to second detection sensitivity (which is detection sensitivity available for inclination judgment of a vehicle, and for example, is approximately ±2 G). An inclination judgment part judges whether or not a vehicle is inclined on the basis of a detection result of the acceleration sensor whose detection sensitivity was switched as described above, and outputs an anti-theft alarm through an alarm part, in case that an output of the acceleration sensor exceeds 0.1 G.
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Citations
20 Claims
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1. An anti-theft apparatus comprising:
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an acceleration detection unit mounted on a vehicle for detecting acceleration in a predetermined direction, whose detection result in a first detection sensitivity is used for a predetermined vehicle control; a sensitivity switching unit for switching the detection sensitivity of the acceleration detection unit to a second detection sensitivity which is different from the first detection sensitivity when it received an anti-theft instruction for instructing prevention of theft; and a theft judgment unit for judging whether or not the vehicle is in a theft state on the basis of the detection result of the acceleration detection unit which was switched to the second detection sensitivity by the sensitivity switching unit; wherein the acceleration detection unit is an acceleration sensor which was disposed in a front collision air bag ECU and/or an acceleration sensor which was disposed in a side collision air bag ECU. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An anti-theft apparatus comprising:
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an acceleration detection unit mounted on a vehicle for detecting acceleration in a predetermined direction, whose detection result in a first detection sensitivity is used for a predetermined vehicle control; a sensitivity switching unit for switching the detection sensitivity of the acceleration detection unit to a second detection sensitivity which is different from the first detection sensitivity when it received an anti-theft instruction for instructing prevention of theft; a theft judgment unit for judging whether or not the vehicle is in a theft state on the basis of the detection result of the acceleration detection unit which was switched to the second detection sensitivity by the sensitivity switching unit; and a noise elimination unit for eliminating noise from the detection result of the acceleration detection unit, wherein the theft judgment unit judges whether or not the vehicle is in the theft state on the basis of the detection result from which noise was eliminated by the noise elimination unit, wherein the noise elimination unit eliminates the noise, by periodically integrating the detection result of the acceleration detection unit.
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17. An anti-theft apparatus comprising:
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an acceleration detection unit mounted on a vehicle for detecting acceleration in a predetermined direction, whose detection result in a first detection sensitivity is used for a predetermined vehicle control; a sensitivity switching unit for switching the detection sensitivity of the acceleration detection unit to a second detection sensitivity which is different from the first detection sensitivity when it received an anti-theft instruction for instructing prevention of theft; a theft judgment unit for judging whether or not the vehicle is in a theft state on the basis of the detection result of the acceleration detection unit which was switched to the second detection sensitivity by the sensitivity switching unit; and a noise elimination unit for eliminating noise from the detection result of the acceleration detection unit, wherein the theft judgment unit judges whether or not the vehicle is in the theft state on the basis of the detection result from which noise was eliminated by the noise elimination unit, wherein the noise elimination unit eliminates the noise by switching a cutoff frequency of a filter which is additionally disposed in the acceleration detection unit to a frequency which corresponded to theft judgment of the vehicle, and by periodically integrating the detection result of the acceleration detection unit.
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18. An anti-theft method comprising:
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an acceleration detection step of detecting acceleration in a predetermined direction, a result of the detection in a first detection sensitivity being used for a predetermined vehicle control; a sensitivity switching step of switching the detection sensitivity of the acceleration detection step to a second detection sensitivity which is different from the first detection sensitivity when an anti-theft instruction for instructing prevention of theft was received; and a theft judgment step of judging whether or not the vehicle is in a theft state on the basis of the detection result of the acceleration detection step which was switched to the second detection sensitivity by the sensitivity switching step; wherein the acceleration detection unit is an acceleration sensor which was disposed in a front collision air bag ECU and/or an acceleration sensor which was disposed in a side collision air bag ECU.
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19. An anti-theft program for having a computer executed program on a computer readable medium, comprising:
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an acceleration detection step of detecting acceleration in a predetermined direction, a result of the detection in a first detection sensitivity being used for a predetermined vehicle control; a sensitivity switching step of switching the detection sensitivity of the acceleration detection step to a second detection sensitivity which is different from the first detection sensitivity when an anti-theft instruction for instructing prevention of theft was received; and a theft judgment step of judging whether or not the vehicle is in a theft state on the basis of the detection result of the acceleration detection step which was switched to the second detection sensitivity by the sensitivity switching step; wherein the acceleration detection unit is an acceleration sensor which was disposed in a front collision air bag ECU andlor an acceleration sensor which was disposed in a side collision air bag ECU.
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20. An anti-theft apparatus mounted on a vehicle that includes an acceleration detection unit for detecting acceleration in a predetermined direction, the anti-theft apparatus comprising
a theft judgment unit for judging whether or not the vehicle is in a theft state on the basis of the detection result of the acceleration detection unit, wherein the acceleration detection unit includes a sensitivity switching unit for switching the detection sensitivity of the acceleration detection unit to a second detection sensitivity which is different from the first detection sensitivity and the acceleration detection unit is an acceleration sensor which was disposed in a front collision air bag ECU and/or an acceleration sensor which was disposed in a side collision air bag ECU.
Specification