Method and system for indicating bulb circuit failure
AssigneeDelphi Technologies, Inc.
InventorsWilliam F. Pakkala, Steven C. Kekel, Daniel A. Crawford, Diana K. Voges
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Abstract
A method of monitoring faults in a vehicle bulb circuit including bulb and a fuse. The method includes detecting acceleration of the vehicle and comparing the acceleration of the vehicle to a limit. Based on the relationship of the acceleration to the limit, it is determined whether a fault exists in the bulb circuit. An indicator is activated in response to detecting a fault in the bulb circuit. A system for implementing the method is also disclosed.
Claims22
A method of monitoring faults in a vehicle bulb circuit including a bulb and a fuse, the method comprising:
- detecting acceleration of the vehicle;
- comparing the acceleration of the vehicle to a limit;
- if the acceleration has a predefined relationship with respect to the limit, determining whether a fault exists in the bulb circuit;
- and
- activating an indicator in response to detecting a fault in the bulb circuit.
A method of monitoring faults in a vehicle bulb circuit including a bulb and a fuse, the method comprising:
- detecting acceleration of the vehicle;
- if said acceleration is negative, comparing the negative acceleration to a deceleration limit;
- if the negative acceleration is less than the deceleration limit determining a state of a bulb illumination signal;
- and, incrementing a fuse fault count if the bulb illumination signal is in a first state;
- if said acceleration is positive, comparing the positive acceleration to an acceleration limit;
- if the positive acceleration is greater than the acceleration limit determining a state of a bulb illumination signal;
- incrementing a bulb fault count if the bulb illumination signal is in a second state;
- activating an indicator in response to one of the bulb fault count and the fuse fault count.
A system for monitoring faults in a vehicle, the system comprising:
- a bulb circuit including a bulb and a fuse;
- a control system having an input terminal coupled to said bulb;
- and,
- an indicator coupled to said control system;
- said control system,
- comparing acceleration of the vehicle to a limit;
- if the acceleration has a predefined relationship with respect to the limit, determining whether a fault exists in the bulb circuit;
- and
- activating said indicator in response to detecting a fault in the bulb circuit.
Dependencies are inferred from the claim text.