Testing a crash sensor device during vehicle operation
AssigneeInfineon Technologies AG
InventorDirk Hammerschmidt
Life of this patent
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Abstract
A crash sensor device may include multiple sensor components positioned along one or more data paths to a communication interface of the crash sensor device. The crash sensor device may include a test control unit. The test control unit may receive a test command from an electronic control unit during operation of a vehicle. The test control unit may perform a test of one or more sensor components, of the multiple sensor components, during operation of the vehicle based on the test command. The test control unit may output a test result to the electronic control unit based on performing the test.
Claims20
A sensor device, comprising:
- a first plurality of sensor components configured to generate a first output;
- a second plurality of sensor components configured to generate a second output,
- the first plurality of sensor components and the second plurality of sensor components providing redundancy along different data paths to a communication interface;
- and
- a test control processor configured to:
- compare the first output and the second output;
- trigger a performance of a first test on the first plurality of sensor components based on the first output and the second output differing by a threshold amount,
- the second output to be used for control of a system and the first output not to be used for control of the system while the first test is being performed,
- the first test to be performed during operation of the system;
- determine that the first test is complete;
- provide an indication that the first test is complete based on determining that the first test is complete,
- the first output to be used for control of the system after a first settling time has elapsed from completion of the first test;
- trigger a performance of a second test on the second plurality of sensor components based on the first output and the second output differing by the threshold amount,
- the second output not to be used for control of the system and the first output to be used for control of the system while the second test is being performed;
- determine that the second test is complete;
- and
- provide an indication that the second test is complete based on determining that the second test is complete,
- the second output to be used for control of the system after a second settling time has elapsed from completion of the second test.
A method, comprising:
- comparing, by a device, a first output generated by a first plurality of sensor components and a second output generated by a second plurality of sensor components;
- trigger, by the device, a performance of a first test on the first plurality of sensor components based on the first output and the second output differing by a threshold amount,
- wherein the first plurality of sensor components and the second plurality of sensor components provide redundancy along different data paths to a communication interface, and
- wherein the second output is to be used for control of a system and the first output is not to be used for control of the system while the first test is being performed,
- the first test to be performed during operation of the system;
- determining, by the device, that the first test is complete;
- providing, by the device, an indication that the first test is complete based on determining that the first test is complete,
- wherein the first output is to be used for control of the system after a first settling time has elapsed from completion of the first test;
- trigger, by the device, a performance of a second test on the second plurality of sensor components based on the first output and the second output differing by the threshold amount,
- wherein the second output is not to be used for control of the system and the first output is to be used for control of the system while the second test is being performed;
- determining, by the device, that the second test is complete;
- and
- providing, by the device, an indication that the second test is complete based on determining that the second test is complete,
- wherein the second output is to be used for control of the system after a second settling time has elapsed from completion of the second test.
A non-transitory computer-readable medium storing instructions, the instructions comprising:
- one or more instructions, when executed by one or more processors, cause the one or more processors to:
- compare a first output generated by a first plurality of sensor components and a second output generated by a second plurality of sensor components;
- trigger a performance of a first test on the first plurality of sensor components based on the first output and the second output differing by a threshold amount,
- wherein the first plurality of sensor components and the second plurality of sensor components provide redundancy along different data paths to a communication interface, and
- wherein the second output is to be used for control of a system and the first output is not to be used for control of the system while the first test is being performed,
- the first test to be performed during operation of the system;
- determine that the first test is complete;
- provide an indication that the first test is complete based on determining that the first test is complete,
- the first output to be used for control of the system after a first settling time has elapsed from completion of the first test;
- trigger a performance of a second test on the second plurality of sensor components based on the first output and the second output differing by the threshold amount,
- the second output not to be used for control of the system and the first output to be used for control of the system while the second test is being performed;
- determine that the second test is complete;
- and
- provide an indication that the second test is complete based on determining that the second test is complete,
- the second output to be used for control of the system after a second settling time has elapsed from completion of the second test.
Dependencies are inferred from the claim text.