Apparatus for automatic release of passenger protection devices in the event of an accident
First Claim
1. An apparatus for the automatic release of passenger protection devices in motor vehicles in the event of an accident, comprising:
- a sensor (35) formed to emit a control signal upon deviation form a prescribed driving situation of the motor vehicle, said sensor (35) including an anchorage (12) and a seismic mass (10) with a center of mass (11), said seismic mass (10) being elastically anchored outside said center of mass (11), said seismic mass (10) being formed to produce a torque in said anchorage (12) so that said sensor (35) simultaneously measures at least a positional angle with respect to an apparent vertical and an angular acceleration of the motor vehicle; and
electrical circuit means for splitting said control signal into at least two ranges.
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Accused Products
Abstract
An apparatus for the automatic release of passenger protection devices in motor vehicles in the event of an accident has a sensor (35) having a mass (10) secured outside the center of mass (11). This mass (10) generates a comparably high torque in the suspension in the event of both positional change and rotational acceleration. These torques are detected with known measuring methods and split, with the aid of a high-pass filter (36) and a low-pass filter (40), into a high-frequency and a low-frequency portion. The high frequency portion corresponds to the rotational acceleration, from which the rotational velocity is obtained by means of an integrator (38). The low-frequency portion corresponds to the position of the motor vehicle. Thus both measurement variables that must be detected for releasing a roll bar are obtained with a single sensor (35).
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Citations
19 Claims
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1. An apparatus for the automatic release of passenger protection devices in motor vehicles in the event of an accident, comprising:
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a sensor (35) formed to emit a control signal upon deviation form a prescribed driving situation of the motor vehicle, said sensor (35) including an anchorage (12) and a seismic mass (10) with a center of mass (11), said seismic mass (10) being elastically anchored outside said center of mass (11), said seismic mass (10) being formed to produce a torque in said anchorage (12) so that said sensor (35) simultaneously measures at least a positional angle with respect to an apparent vertical and an angular acceleration of the motor vehicle; and electrical circuit means for splitting said control signal into at least two ranges. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification