Control unit and method for activating passenger protection means and sensor for outputting a crash-relevant signal
AssigneeRobert Bosch GmbH
InventorHartmut Schumacher
Life of this patent
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Abstract
A control unit and a method for activating passenger protection arrangement, as well as a sensor for outputting a crash-relevant signal, are proposed. A digital signal, which is relevant for activating the passenger protection arrangement, is output with the aid of an interface. The interface has a plurality of power sources for influencing the signal edges of the digital signal.
Claims18
A control unit for activating a passenger protection arrangement, comprising:
- at least one interface configured to output a digital data signal, wherein the at least one interface has a plurality of power sources for influencing signal edges of the digital data signal;
- and
- a microcontroller configured to control the activation of the passenger protection arrangement based on the digital data signal;
- wherein the control unit configures the signal edges by switching the power sources to shape slopes of the signal edges, so as to provide an optimum electromagnetic compatibility (EMC).
A vehicle sensor system, comprising:
- a sensor for outputting a crash-relevant signal;
- an interface connected to the sensor for outputting a digital data signal based on the crash-relevant signal, wherein the interface has a plurality of power sources for influencing signal edges of the digital data signal;
- and
- a control unit that configures the signal edges by switching the power sources to shape slopes of the signal edges, so as to provide an optimum electromagnetic compatibility (EMC).
A method for activating a passenger protection arrangement of a vehicle, the method comprising:
- receiving from a vehicle sensor at least one crash-relevant signal;
- generating, from an interface, a digital data signal based on the crash-relevant signal, wherein signal edges of the digital data signal are influenced with the aid of a plurality of power sources in the interface;
- switching the power sources to shape slopes of the signal edges, so as to provide an optimum electromagnetic compatibility (EMC);
- and
- controlling, using a microcontroller, the activation of the passenger protection arrangement based on the digital data signal.
A control unit for activating a passenger protection arrangement, comprising:
- at least one interface configured to output a digital data signal, wherein the at least one interface has a plurality of power sources for influencing signal edges of the digital data signal;
- and
- a microcontroller configured to control the activation of the passenger protection arrangement based on the digital data signal;
- wherein the signal edges are configured so as to provide an optimum electromagnetic compatibility (EMC), and
- wherein the power sources are digitally switched at a predefined point in time to influence the signal edges, a first clock rate for the switching of the power sources being greater than data clock rate, wherein the interface includes a recognition circuit configured to recognize the output of the digital data signal, a counter configured to start counting as a function of a recognition signal generated by the recognition circuit, and a decoder configured to control the switching of the power sources as a function of the counter content, and wherein the interface includes an influencing circuit configured to influence current values of selected power sources.
Dependencies are inferred from the claim text.