Method for determining an impact intensity
A method for generating a signal representing an impact intensity including the steps: receiving at least three signals, which represent respectively accelerations in different spatial directions; calculating a direction-independent variable from the three signals; ascertaining an integrated measurand of the direction-independent variable over a time window; generating a signal representing an impact intensity on the basis of the ascertained integrated measurand.
1. A method for a vehicle for generating a signal representing an impact intensity, comprising:
receiving at least three signals, which represent respectively accelerations in different spatial directions;
calculating a direction-independent variable from the three signals;
adapting the direction-independent variable by subtracting a value representing gravitational acceleration from the direction-independent variable;
ascertaining an integrated measurand of the direction-independent variable over a time window; and
generating a signal representing an impact intensity from the ascertained integrated measurand.
2. The method as recited in claim 1 , wherein the three signals are low-pass filtered.
3. The method as recited in claim 1 , wherein the integrated measurand is ascertained continuously.
4. The method as recited in claim 1 , wherein the integrated measurand is compared to a predefined threshold value.
5. The method as recited in claim 1 , wherein a transmitting device is activated for transmitting the signal representing an impact intensity to: (i) an external receiving device, and/or (ii) a mobile terminal.
6. The method as recited in claim 1 , wherein the integrated measurand is ascertained continuously at a discrete-time sampling rate.
7. The method as recited in claim 1 , wherein a transmitting device is triggered based on the comparison to transmit the signal representing the impact intensity to at least one of: an external receiving device, or a mobile terminal.
8. A non-transitory machine-readable storage medium on which is stored a computer program for generating a signal representing an impact intensity, the computer program, when executed by a processor, causing the processor to perform:
receiving at least three signals, which represent respectively accelerations in different spatial directions;
calculating a direction-independent variable from the three signals;
adapting the direction-independent variable by subtracting a value representing gravitational acceleration from the direction-independent variable;
ascertaining an integrated measurand of the direction-independent variable over a time window; and
generating a signal representing an impact intensity from the ascertained integrated measurand.
9. An electronic control unit for generating a signal representing an impact intensity, the electronic control unit designed to:
receive at least three signals, which represent respectively accelerations in different spatial directions;
calculate a direction-independent variable from the three signals;
adapting the direction-independent variable by subtracting a value representing gravitational acceleration from the direction-independent variable;
ascertain an integrated measurand of the direction-independent variable over a time window; and
generate a signal representing an impact intensity from the ascertained integrated measurand.
10. A device, comprising:
an electronic control unit for generating a signal representing an impact intensity, the electronic control unit designed to:
receive at least three signals, which represent respectively accelerations in different spatial directions,
calculate a direction-independent variable from the three signals,
adapting the direction-independent variable by subtracting a value representing gravitational acceleration from the direction-independent variable;
ascertain an integrated measurand of the direction-independent variable over a time window, and
generate a signal representing an impact intensity from the ascertained integrated measurand; and
a triaxial acceleration sensor to detect the accelerations in the three different spatial directions.
11. The device as recited in claim 10 , further comprising:
a transmitting device to transmit the signal representing an impact intensity to: (i) an external receiving device, and/or (ii) a mobile terminal.
12. The device as recited in claim 11 , wherein the electronic control unit, the triaxial acceleration sensor, and the transmitting device are situated together in a common housing.
13. A method for a vehicle for generating a signal representing an impact intensity, comprising:
receiving at least three signals, which represent respectively accelerations in different spatial directions;
adapting at least one of the three signals by subtracting a value representing gravitational acceleration from the at least one of the three signals;
calculating a direction-independent variable from the three signals;
ascertaining an integrated measurand of the direction-independent variable over a time window; and
generating a signal representing an impact intensity from the ascertained integrated measurand.