Device and method for triggering passenger protection devices
First Claim
1. A device for triggering a passenger protection device of a vehicle, wherein the device is configured to be connected to an accident sensor system which is configured to generate a first signal in response to a single impact event in which an object impacts the vehicle, the device comprising:
- an analyzer circuit adapted to;
derive a second signal from the first signal;
integrate the second signal to obtain a third signal;
determine a first value, which characterizes a combination of values of the second signal over an entirety of a period during which the second signal lasts, by an absolute summation of particular differences in successive values of the second signal;
determine a second value, which characterizes a combination of values of the third signal over an entirety of a period during which the third signal lasts, by an absolute summation of particular differences in successive values of the third signal;
determine a frequency of the second signal by forming a quotient of the second values andtrigger the passenger protection device as a function of the determined frequency.
1 Assignment
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Accused Products
Abstract
A device and a method for triggering passenger protection devices, an accident sensor system generating a first signal and the passenger protection devices being triggered as a function of a frequency of a second signal, which is derived from the first signal, the frequency being determined as a function of a first length of a first signal characteristic of the second signal and of a second length of a second signal characteristic of the added-up second signal.
19 Citations
25 Claims
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1. A device for triggering a passenger protection device of a vehicle, wherein the device is configured to be connected to an accident sensor system which is configured to generate a first signal in response to a single impact event in which an object impacts the vehicle, the device comprising:
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an analyzer circuit adapted to; derive a second signal from the first signal; integrate the second signal to obtain a third signal; determine a first value, which characterizes a combination of values of the second signal over an entirety of a period during which the second signal lasts, by an absolute summation of particular differences in successive values of the second signal; determine a second value, which characterizes a combination of values of the third signal over an entirety of a period during which the third signal lasts, by an absolute summation of particular differences in successive values of the third signal; determine a frequency of the second signal by forming a quotient of the second values and trigger the passenger protection device as a function of the determined frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 16, 17, 18, 19, 24, 25)
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8. A method for triggering a passenger protection device of a vehicle, the method comprising:
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obtaining, by a processing circuit, a first signal from an accident sensor system that generates the first signal in response to a single impact event in which an object impacts the vehicle; deriving, by the processing circuit, a second signal from the first signal; integrating, by the processing circuit, the second signal to obtain a third signal; determining, by the processing circuit, a first value, which characterizes a combination of values of the second signal over an entirety of a period during which the second signal lasts, by a summation of particular differences between successive values of the second signal; determining, by the processing circuit, a second value, which characterizes a combination of values of the third signal over an entirety of a period during which the third signal lasts, by a summation of particular differences between successive values of the third signal; determining, by the processing circuit, a frequency of the second signal by forming a quotient of the second values and triggering, by the processing circuit, the passenger protection device as a function of the determined frequency. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 22)
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20. A method for triggering a passenger protection device of a vehicle, the method comprising:
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obtaining, by a processing circuit, a first signal from an accident sensor system that generates the first signal in response to a single impact event in which an object impacts the vehicle; deriving, by the processing circuit, a second signal from the first signal; determining, by the processing circuit, a first value, which characterizes a combination of values of the first signal over an entirety of a period during which the first signal lasts, by a summation of particular differences between successive values of the first signal; determining, by the processing circuit, a second value, which characterizes a combination of values of the second signal over an entirety of a period during which the second signal lasts, by a summation of particular differences between successive values of the second signal; determining, by the processing circuit, an angular frequency of the second signal by forming a quotient of the and second values and triggering, by the processing circuit, the passenger protection device as a function of the determined frequency. - View Dependent Claims (21)
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23. A non-transitory computer-readable medium embodying a circuitry-executable program, which, when executed, causes the circuitry to perform a method, the method comprising:
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obtaining a signal that is generated in response to a single impact of an object on a vehicle; determining a first value, which characterizes a combination of values of a second signal derived from the first signal over an entirety of a period during which the second signal lasts, by an absolute summation of particular differences in successive values of the second signal; determining a second value, wherein the second value; characterizes a combination of values of the first signal over an entirety of a period during which the first signal lasts and is determined by a summation of particular differences in successive values of the first signal;
or characterizes a combination of values of a third signal derived from the second signal over an entirety of a period during which the third signal lasts and is determined by a summation of particular differences in successive values of the third signal;determining a frequency of the second signal by forming a quotient of the first and second values; and triggering a passenger protection device of the vehicle as a function of the determined frequency.
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Specification