Magnetic Field Sensor Able To Identify An Error Condition
AssigneeAllegro MicroSystems, LLC
InventorsRémy Lassalle-Balier, Jeffrey Eagen, Paul A. David
Life of this patent
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Abstract
A method of determining an error condition in a magnetic field sensor can include receiving a first bridge signal, the first bridge signal generated by a first full bridge circuit. The method can also include receiving a second bridge signal, the second bridge signal generated by a second full bridge circuit. The method can also include determining a bridge separation from the first bridge signal and the second bridge signal. The method can also include comparing a function of the bridge separation to a threshold value. The method can also include generating an error signal indicative of the error condition or not indicative of the error condition in response to the comparing.
Claims43
A method of determining an error condition in a magnetic field sensor, comprising:
- receiving a first bridge signal, the first bridge signal generated by a first full bridge circuit;
- receiving a second bridge signal, the second bridge signal generated by a second full bridge circuit;
- determining a bridge separation from the first bridge signal and the second bridge signal;
- comparing a function of the bridge separation to a threshold value;
- and
- generating an error signal indicative of the error condition or not indicative of the error condition in response to the comparing.
A magnetic field sensor, comprising:
- one or more circuit modules configured to:
- receive a first bridge signal, the first bridge signal generated by a first full bridge circuit;
- receive a second bridge signal, the second bridge signal generated by a second full bridge circuit;
- determine a bridge separation from the first bridge signal and the second bridge signal;
- compare a function of the bridge separation to a threshold value;
- and
- generate an error signal indicative or an error or indicative of no error in response to the comparing.
A magnetic field sensor, comprising:
- means for receiving a first bridge signal, the first bridge signal generated by a first full bridge circuit;
- means for receiving a second bridge signal, the second bridge signal generated by a second full bridge circuit;
- means for determining a bridge separation from the first bridge signal and the second bridge signal;
- means for comparing a function of the bridge separation to a threshold value;
- and
- means for generating an error signal indicative or an error or indicative of no error in response to the comparing.
A non-transitory machine-readable storage medium for storing executable instructions in a magnetic field sensor, the instructions comprising instruction for:
- receiving a first bridge signal, the first bridge signal generated by a first full bridge circuit;
- receiving a second bridge signal, the second bridge signal generated by a second full bridge circuit;
- determining a bridge separation from the first bridge signal and the second bridge signal;
- comparing a function of the bridge separation to a threshold value;
- and
- generating an error signal indicative or an error or indicative of no error in response to the comparing.
Dependencies are inferred from the claim text.