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US 11,493,528 B2Granted
Position sensor
AssigneeDenso Corporation
InventorsAkito Sasaki, Atsushi Kobayashi, Michihiro Makita, Tetsuya Ohmi
Life of this patent
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Abstract
A position sensor including: a power supply terminal to which a power supply voltage is applied; a ground terminal to which a ground voltage is applied; an output terminal that outputs a signal; a detection portion that operates based on the power supply voltage and the ground voltage, and detects a position of a detection target by a magnetic resistance element whose resistance value changes according to a movement of the detection target; and a signal processing portion that operates based on the power supply voltage and the ground voltage, and processes a signal input from the detection portion.
Claims6
A position sensor comprising:
- a power supply terminal to which a power supply voltage is applied;
- a ground terminal to which a ground voltage is applied;
- an output terminal that outputs a signal;
- a detection portion that operates based on the power supply voltage and the ground voltage, and detects a position of a detection target by a magnetic resistance element whose resistance value changes according to a movement of the detection target;
- and
- a signal processing portion that operates based on the power supply voltage and the ground voltage, and processes a signal input from the detection portion,
- wherein:
- the detection portion includes
- a first detection element that outputs a first detection signal corresponding to a position of the detection target, and
- a second detection element that outputs a second detection signal corresponding to a position of the detection target;
- the signal processing portion includes
- a first processing portion that receives the first detection signal from the first detection element and specifies the position of the detection target based on the first detection signal,
- a second processing portion that receives the second detection signal from the second detection element and specifies the position of the detection target based on the second detection signal,
- a failure determination portion that determines whether the position specified by the first processing portion matches the position specified by the second processing portion, and
- an output circuit that, in response to that determinations by the failure determination portion match, outputs a position signal corresponding to a matching position to the output terminal and that, in response to that the determinations by the failure determination portion do not match, outputs a failure signal corresponding to a failure to the output terminal;
- and
- the first processing portion and the second processing portion each specifies a position of the detection target as a position in any of a plurality of ranges along a movement direction of the detection target, and outputs a signal with a discrete value corresponding to a range that covers the position specified among discrete values respectively set in the plurality of ranges to the failure determination portion.
14 more elements
A position sensor comprising:
- an output terminal that outputs a signal;
- a detector that includes
- a first detection element that outputs a first detection signal corresponding to a position of a detection target, and
- a second detection element that outputs a second detection signal corresponding to a position of the detection target, so as to detect the position of the detection target by a magnetic resistance element whose resistance value changes according to a movement of the detection target;
- and
- a signal processing circuit that is configured to
- receive the first detection signal from the first detection element and specifies the position of the detection target based on the first detection signal,
- receive the second detection signal from the second detection element and specifies the position of the detection target based on the second detection signal,
- determine whether the position of the detection target based on the first detection signal matches the position of the detection target based on the second detection signal,
- in response to that the determination matches, output a position signal corresponding to a matching position to the output terminal, and
- in response to that the determination does not match, output a failure signal corresponding to a failure to the output terminal,
- wherein:
- a first processing portion and a second processing portion each specifies a position of the detection target as a position in any of a plurality of ranges along a movement direction of the detection target, and outputs a signal with a discrete value corresponding to a range that covers the position specified among discrete values respectively set in the plurality of ranges to a failure determination portion.
10 more elements
Dependencies are inferred from the claim text.