Integrated occupant and crash sensing control unit
First Claim
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1. An integrated occupant and crash sensing control unit for a motor vehicle, comprising:
- a first processor;
a pressure sensor interface coupled between the first processor and a pressure sensor, wherein the pressure sensor provides a pressure signal to the first processor, the pressure signal providing an indication of a weight of an occupant of a seat of a motor vehicle;
a safety belt tension sensor interface coupled between the first processor and a safety belt tension sensor, wherein the belt tension sensor provides a tension signal to the first processor, the tension signal providing an indication of a tension within a safety belt associated with the seat; and
a dual axis accelerometer coupled to the first processor, wherein the accelerometer provides a lateral deceleration signal and a longitudinal deceleration signal to the first processor, the lateral and longitudinal deceleration signals providing an indication of the lateral and longitudinal deceleration, respectively, of the motor vehicle, and wherein the first processor provides an activation signal to a restraint device responsive to the pressure signal, the tension signal and the lateral and longitudinal deceleration signals.
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Abstract
An integrated occupant and crash sensing control unit for a motor vehicle includes a first processor, a pressure sensor interface, a safety belt tension sensor interface and a dual axis accelerometer. The first processor provides an activation signal to a restraint device responsive to a pressure signal, a tension signal and lateral and longitudinal deceleration signals.
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Citations
20 Claims
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1. An integrated occupant and crash sensing control unit for a motor vehicle, comprising:
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a first processor;
a pressure sensor interface coupled between the first processor and a pressure sensor, wherein the pressure sensor provides a pressure signal to the first processor, the pressure signal providing an indication of a weight of an occupant of a seat of a motor vehicle;
a safety belt tension sensor interface coupled between the first processor and a safety belt tension sensor, wherein the belt tension sensor provides a tension signal to the first processor, the tension signal providing an indication of a tension within a safety belt associated with the seat; and
a dual axis accelerometer coupled to the first processor, wherein the accelerometer provides a lateral deceleration signal and a longitudinal deceleration signal to the first processor, the lateral and longitudinal deceleration signals providing an indication of the lateral and longitudinal deceleration, respectively, of the motor vehicle, and wherein the first processor provides an activation signal to a restraint device responsive to the pressure signal, the tension signal and the lateral and longitudinal deceleration signals. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An integrated occupant and crash sensing control unit for a motor vehicle, comprising:
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a first processor;
a pressure sensor interface coupled between the first processor and a pressure sensor, wherein the pressure sensor provides a pressure signal to the first processor, the pressure signal providing an indication of a weight of an occupant of a seat of a motor vehicle;
a safety belt tension sensor interface coupled between the first processor and a safety belt tension sensor, wherein the belt tension sensor provides a tension signal to the first processor, the tension signal providing an indication of a tension within a safety belt associated with the seat; and
a dual axis accelerometer coupled to the first processor, wherein the accelerometer provides a lateral deceleration signal and a longitudinal deceleration signal to the first processor, the lateral and longitudinal deceleration signals providing an indication of the lateral and longitudinal deceleration, respectively, of the motor vehicle, and wherein the first processor provides an activation signal to an airbag responsive to the pressure signal, the tension signal and the lateral and longitudinal deceleration signals. - View Dependent Claims (9, 10, 11, 12, 13)
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14. An integrated occupant and crash sensing control unit for a motor vehicle, comprising:
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a first processor;
a pressure sensor interface coupled between the first processor and a pressure sensor, wherein the pressure sensor provides a pressure signal to the first processor, the pressure signal providing an indication of a weight of an occupant of a seat of a motor vehicle;
a safety belt tension sensor interface coupled between the first processor and a safety belt tension sensor, wherein the belt tension sensor provides a tension signal to the first processor, the tension signal providing an indication of a tension within a safety belt associated with the seat;
a dual axis accelerometer coupled to the first processor, wherein the accelerometer provides a lateral deceleration signal and a longitudinal deceleration signal to the first processor, the lateral and longitudinal deceleration signals providing an indication of the lateral and longitudinal deceleration, respectively, of the motor vehicle, and wherein the first processor provides an activation signal to a restraint device responsive to the pressure signal, the tension signal and the lateral and longitudinal deceleration signals; and
an energy reserve circuit coupled to the first processor, the pressure sensor interface, the belt tension sensor interface and the dual axis accelerometer, wherein the energy reserve circuit provides power to the first processor, the pressure sensor interface, the belt tension sensor interface and the dual axis accelerometer for a limited period of time following a collision. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification