Magnetic sensor assembly
First Claim
1. A sensor assembly, comprising:
- a first magneto-resistive field sensor in a first surface-mountable package, which is arranged to measure first and second components of a magnetic field projected onto respective different first and second axes with respect to a spatial orientation of the first field sensor and to produce first position signals indicative of the measured first and second components;
a second magneto-resistive field sensor in a second surface-mountable package, which is arranged to measure at least a third component of the magnetic field projected onto at least a third axis with respect to the spatial orientation of the second field sensor, and to produce second position signals indicative of the measured third component; and
a substrate assembly having the first and second field sensors surface-mounted thereon, which is coupled to orient the first field sensor in a first spatial orientation and to orient the second field sensor in a second spatial orientation so that the third axis is oriented out of a plane containing the first and second axes.
1 Assignment
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Accused Products
Abstract
A sensor assembly includes a first magneto-resistive field sensor in a first surface-mountable package, which measures first and second components of a magnetic field projected onto respective different first and second axes with respect to a spatial orientation of the sensor and to produce first position signals indicative of the measured first and second components. A second magneto-resistive field sensor in a second surface-mountable package measures at least a third component of the magnetic field projected onto at least a third axis with respect to the spatial orientation of the sensor, and to produce second position signals indicative of the measured third component. A substrate assembly orients the first field sensor in a first spatial orientation and to orient the second field sensor in a second spatial orientation so that the third axis is oriented out of a plane containing the first and second axes.
37 Citations
22 Claims
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1. A sensor assembly, comprising:
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a first magneto-resistive field sensor in a first surface-mountable package, which is arranged to measure first and second components of a magnetic field projected onto respective different first and second axes with respect to a spatial orientation of the first field sensor and to produce first position signals indicative of the measured first and second components;
a second magneto-resistive field sensor in a second surface-mountable package, which is arranged to measure at least a third component of the magnetic field projected onto at least a third axis with respect to the spatial orientation of the second field sensor, and to produce second position signals indicative of the measured third component; and
a substrate assembly having the first and second field sensors surface-mounted thereon, which is coupled to orient the first field sensor in a first spatial orientation and to orient the second field sensor in a second spatial orientation so that the third axis is oriented out of a plane containing the first and second axes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. Position sensing apparatus, comprising:
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one or more field generators, which are arranged to generate a magnetic field;
a sensor assembly, comprising;
a first magneto-resistive field sensor in a first surface-mountable package, which is arranged to measure first and second components of the magnetic field projected onto respective different first and second axes with respect to a spatial orientation of the first field sensor and to produce first position signals indicative of the measured first and second components;
a second magneto-resistive field sensor in a second surface-mountable package, which is arranged to measure at least a third component of the magnetic field projected onto at least a third axis with respect to the spatial orientation of the second field sensor, and to produce second position signals indicative of the measured third component; and
a substrate assembly having the first and second field sensors surface-mounted thereon, which is coupled to orient the first field sensor in a first spatial orientation and to orient the second field sensor in a second spatial orientation, so that the third axis is oriented out of a plane containing the first and second axes; and
a control module, which is arranged to receive the first and second position signals and to calculate a spatial position of the sensor assembly with respect to the one or more field generators responsively to the position signals. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method for producing a sensor assembly, comprising:
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providing a first magneto-resistive field sensor in a first surface-mountable package, which is arranged to measure first and second components of a magnetic field projected onto respective different first and second axes with respect to a spatial orientation of the first field sensor and to produce first position signals indicative of the measured first and second components;
providing a second magneto-resistive field sensor in a second surface-mountable package, which is arranged to measure at least a third component of the magnetic field projected onto at least a third axis with respect to the spatial orientation of the second field sensor, and to produce second position signals indicative of the measured third component;
surface-mounting the first and second field sensors on a substrate assembly so as to orient the first field sensor in a first spatial orientation and to orient the second field sensor in a second spatial orientation, so that the third axis is oriented out of a plane containing the first and second axes. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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Specification