Fault management device for devices in a mobility device and a fault management method thereof

A method performed by a fault management device including a microcontroller, the method comprising:

• receiving information indicating an occurrence of a pre-designated first fault of a controlled device from a controller connected to the fault management device;
• incrementing a respective first counter of a first counter set corresponding to the pre-designated first fault, the first counter set including a first number of counters;
• receiving information indicating an occurrence of a pre-designated second fault from the controller connected to the fault management device;
• and
• incrementing a respective second counter of a second counter set corresponding to the pre-designated second fault, the second counter set including a second number of counters,
• wherein:
• the first number and the second number are different,
• the first counter set and the second counter set each includes a respective set of one or more counters,
• when at least one of the first counter set or the second counter set includes a plurality of counters,
• i) the plurality of counters includes the respective first counter and the respective second counter, and
• ii) the respective second counter is incremented when the respective first counter exceeds a first reference value, and
• when at least one of the first counter set or the second counter set includes a respective third counter,
• i) the at least one of the first counter set or the second counter set including the respective third counter includes the respective first counter, the respective second counter, and the respective third counter,
• ii) the respective second counter is incremented when the respective first counter exceeds the first reference value, and
• iii) the respective third counter is incremented when the respective second counter exceeds a second reference value, and
• wherein the method further includes entering a safe mode when the respective third counter exceeds a third reference value, wherein the safe mode is a mode in which a mobility device operates with one or more functions, of the controlled device of the mobility device, deactivated.

A method performed by a fault management device including a microcontroller, the method comprising:

• receiving information indicating an occurrence of a pre-designated first fault of a controlled device of a mobility device from a controller connected to the fault management device;
• determining a counter to be incremented corresponding to the pre-designated first fault as any one of a first counter, a second counter, and a third counter;
• and
• incrementing the counter to be incremented,
• wherein the second counter is a counter that is incremented when the first counter exceeds a first reference value as a result of the increment of the first counter,
• wherein the third counter is a counter that is incremented when the second counter exceeds a second reference value as a result of the increment of the second counter,
• wherein incrementing the counter to be incremented includes entering a safe mode in response to the third counter exceeding a third threshold as a result of the increment of the counter to be incremented, and
• wherein the safe mode is a mode in which the mobility device operates with one or more functions, of the controlled device of the mobility device, deactivated.

A fault management device, comprising:

• a processor;
• and
• a memory for storing instructions,
• wherein the instructions, when executed by the processor, cause the processor to perform operations including:
• receiving fault information of a controlled device of a mobility device from a controller connected to the fault management device;
• incrementing a first counter in response to receiving the fault information;
• incrementing a second counter and initializing the first counter, when the first counter exceeds a first reference value;
• incrementing a third counter and initializing the second counter, when the second counter exceeds a second reference value;
• and
• entering a safe mode when the third counter exceeds a third reference value,
• wherein when the fault management device does not receive the fault information for a first reference time or more, the first counter decrements, and
• wherein the safe mode is a mode in which the mobility device operates with one or more functions, of the controlled device of the mobility device, deactivated.