Systems and methods for critical data save in electronic control modules
AssigneeCummins Inc.
InventorsVratika Malavia, Amar Deshmukh, Abhik Giri
Life of this patent
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Abstract
A controller for a vehicle includes at least one processor and at least one memory storing instructions that, when executed by the processor, cause the controller to perform various operations. The operations include determining that a power loss to the controller has occurred. In response to the determination that the power loss has occurred, the operations are structured to determine whether a key switch associated with an engine of the vehicle is on; and, when the key switch is on, save operating data to a ferroelectric random access memory (TRAM) coupled to the controller.
Claims18
A controller for a vehicle comprising at least one processor and at least one memory storing instructions that, when executed by the processor, cause the controller to:
- receive an indication of a power loss event to the controller based on a battery of the vehicle being in an off state;
- determine a state of a switch, the switch associated with electrical power to start an engine of the vehicle;
- in response to the power loss event and the state of the switch being on to enable electrical power to start the engine of the vehicle, save operating data to a ferroelectric random access memory (FRAM);
- and
- in response to the power loss event and the state of the switch being off, releasing a power down signal to at least one component of the vehicle to initiate a shutdown process for the at least one component.
A method for saving critical operating data of an engine control module (ECM), the method comprising:
- receiving an indication of a power loss event to the ECM based on a power source structured to provide power to the ECM being not operational;
- determine a state of a switch, the switch associated with electrical power to start an engine of a vehicle;
- in response to the power loss event and the state of the switch being on to enable electrical power to start the engine of the vehicle including the ECM, saving operating data to a ferroelectric random access memory (FRAM);
- and
- in response to the power loss event and the state of the switch being off, releasing a power down signal to at least one component of the vehicle to initiate a shutdown process for the at least one component.
A non-transitory computer-readable media comprising computer-executable instructions stored thereon that, when executed by one or more processors, perform operations comprising:
- receiving an indication of a power loss event to an electronic control module (ECM) based on a power source structured to provide power to the ECM being not operational;
- determining a state of a switch, the switch associated with electrical power to start an engine of a vehicle;
- in response to the power loss event and the state of the switch being on to enable electrical power to start the engine of the vehicle including the ECM, saving operating data to a ferroelectric random access memory (FRAM);
- and
- in response to the power loss event and the state of the switch being off, releasing a power down signal to at least one component of the vehicle to initiate a shutdown process for the at least one component.
Dependencies are inferred from the claim text.