Vehicular magnetic displacement sensor for determining an offset in the output of the sensor

A vehicular magnetic device for determining a displacement of an element of a vehicle via a measured displacement, said magnetic device comprising:

• a magnetic element which generates a magnetic field;
• at least one magnetoresponsive sensor for sensing the magnetic field generated by said magnetic element, said magnetic element being spaced from said at least one magnetoresponsive sensor and being movable relative thereto, said at least one magnetoresponsive sensor being operable to detect a change in the magnetic field associated with a movement of said magnetic element relative to said at least one magnetoresponsive sensor;
• and
• an electronic control which is operable to analyze an output of said at least one magnetoresponsive sensor and determine a degree of movement of said magnetic element relative to said at least one magnetoresponsive sensor from the output of said at least one magnetoresponsive sensor, said electronic control being further operable to determine an offset in the output of said at least one magnetoresponsive sensor and adjust a control output of said electronic control as a function of the offset, wherein the output of said at least one magnetoresponsive sensor is associated with a coordinate system associated with one of said at least one magnetoresponsive sensor and said magnetic element, the coordinate system being defined by data points having a first and second ordinate, said electronic control being operable to sample data points and determine the offset in response to the data points.

A vehicular magnetic device for determining a displacement of an element of a vehicle via a measured displacement, said magnetic device comprising:

• a magnetic element which generates a magnetic field;
• at least one magnetoresponsive sensor for sensing the magnetic field generated by said magnetic element, said magnetic element being spaced from said at least one magnetoresponsive sensor and being movable relative thereto, said at least one magnetoresponsive sensor being operable to detect a change in the magnetic field associated with a movement of said magnetic element relative to said at least one magnetoresponsive sensor;
• and
• an electronic control which is operable to analyze an output of said at least one magnetoresponsive sensor and determine a degree of movement of said magnetic element relative to said at least one magnetoresponsive sensor from the output of said at least one magnetoresponsive sensor, said electronic control being further operable to determine an offset in the output of said at least one magnetoresponsive sensor and adjust a control output of said electronic control as a function of the offset, wherein one of said magnetic element and said at least one magnetoresponsive sensor is positioned at a movable element of the vehicle and the other of said magnetic element and said at least one magnetoresponsive sensor is positioned at a frame member of the vehicle.

A vehicular magnetic device for determining a displacement of an element of a vehicle via a measured displacement, said magnetic device comprising:

• a magnetic element which generates a magnetic field;
• at least one magnetoresponsive sensor for sensing the magnetic field generated by said magnetic element, said magnetic element being spaced from said at least one magnetoresponsive sensor and being movable relative thereto, said at least one magnetoresponsive sensor being operable to detect a change in the magnetic field associated with a movement of said magnetic element relative to said at least one magnetoresponsive sensor;
• and
• an electronic control which is operable to analyze an output of said at least one magnetoresponsive sensor and determine a degree of movement of said magnetic element relative to said at least one magnetoresponsive sensor from the output of said at least one magnetoresponsive sensor, said electronic control being further operable to determine an offset in the output of said at least one magnetoresponsive sensor and adjust a control output of said electronic control as a function of the offset, wherein said magnetic element is rotatable relative to said at least one magnetoresponsive sensor, said electronic control being operable to determine an angle of rotation of said magnetic element relative to said at least one magnetoresponsive sensor.

A vehicular magnetic device for determining a displacement of an element of a vehicle via a measured displacement, said magnetic device comprising:

• a magnetic element which generates a magnetic field;
• at least one magnetoresponsive sensor for sensing the magnetic field generated by said magnetic element, said magnetic element being spaced from said at least one magnetoresponsive sensor and being movable relative thereto, said at least one magnetoresponsive sensor being operable to detect a change in the magnetic field associated with a movement of said magnetic element relative to said at least one magnetoresponsive sensor;
• and
• an electronic control which is operable to analyze an output of said at least one magnetoresponsive sensor and determine a degree of movement of said magnetic element relative to said at least one magnetoresponsive sensor from the output of said at least one magnetoresponsive sensor, said electronic control being further operable to determine an offset in the output of said at least one magnetoresponsive sensor and adjust a control output of said electronic control as a function of the offset, wherein said control includes a processor which is operable to calculate the offset in the output of said at least one magnetoresponsive sensor.

A vehicular magnetic level sensor adapted for interconnecting with a generally linearly movable component on a vehicle, said level sensor being operable to determine an orientation of the movable component relative to a frame member of the vehicle and comprising:

• a magnetic element which generates a magnetic field;
• at least one magnetoresponsive sensor for sensing the magnetic field generated by said magnetic element, said magnetic element being spaced from said at least one magnetoresponsive sensor and being movable relative thereto, said at least one magnetoresponsive sensor detecting a change in the magnetic field associated with a movement of said magnetic element relative to said at least one magnetoresponsive sensor, one of said magnetic element and said at least one magnetoresponsive sensor being interconnected to the component of the vehicle such that a generally linear movement of the movable component causes a corresponding movement of said one of said magnetic element and said at least one magnetoresponsive sensor relative to the other of said magnetic element and said at least one magnetoresponsive sensor;
• and
• an electronic control for analyzing an output of said at least one magnetoresponsive sensor and determining a degree of movement of said one of said magnetic element and said at least one magnetoresponsive sensor in response to the output of said at least one magnetoresponsive sensor, said electronic control being operable to determine an offset in the output of said at least one magnetoresponsive sensor and adjust an output of said electronic control as a function of the offset, wherein the movable component is one of a control arm and a suspension unit and said generally linear movement is a generally vertical movement of one of the control arm and the suspension unit relative to the frame member of the vehicle.

A vehicular magnetic level sensor adapted for interconnecting with a generally linearly movable component on a vehicle, said level sensor being operable to determine an orientation of the movable component relative to a frame member of the vehicle and comprising:

• a magnetic element which generates a magnetic field;
• at least one magnetoresponsive sensor for sensing the magnetic field generated by said magnetic element, said magnetic element being spaced from said at least one magnetoresponsive sensor and being movable relative thereto, said at least one magnetoresponsive sensor detecting a change in the magnetic field associated with a movement of said magnetic element relative to said at least one magnetoresponsive sensor, one of said magnetic element and said at least one magnetoresponsive sensor being interconnected to the component of the vehicle such that a generally linear displacement of the movable component causes a corresponding movement of said one of said magnetic element and said at least one magnetoresponsive sensor relative to the other of said magnetic element and said at least one magnetoresponsive sensor;
• and
• an electronic control for analyzing an output of said at least one magnetoresponsive sensor and determining a degree of movement of said one of said magnetic element and said at least one magnetoresponsive sensor in response to the output of said at least one magnetoresponsive sensor, said electronic control being operable to determine an offset in the output of said at least one magnetoresponsive sensor and adjust an output of said electronic control as a function of the offset, wherein said magnetic element is rotatably interconnected with the movable component and said at least one magnetoresponsive sensor is fixedly secured to the frame member of the vehicle.

A vehicular magnetic level sensor adapted for interconnecting with a generally linearly movable component on a vehicle, said level sensor being operable to determine an orientation of the movable component relative to a frame member of the vehicle and comprising:

• a magnetic element which generates a magnetic field;
• at least one magnetoresponsive sensor for sensing the magnetic field generated by said magnetic element, said magnetic element being spaced from said at least one magnetoresponsive sensor and being movable relative thereto, said at least one magnetoresponsive sensor detecting a change in the magnetic field associated with a movement of said magnetic element relative to said at least one magnetoresponsive sensor, one of said magnetic element and said at least one magnetoresponsive sensor being interconnected to the component of the vehicle such that a generally linear displacement of the movable component causes a corresponding movement of said one of said magnetic element and said at least one magnetoresponsive sensor relative to the other of said magnetic element and said at least one magnetoresponsive sensor;
• and
• an electronic control for analyzing an output of said at least one magnetoresponsive sensor and determining a degree of movement of said one of said magnetic element and said at least one magnetoresponsive sensor in response to the output of said at least one magnetoresponsive sensor, said electronic control being operable to determine an offset in the output of said at least one magnetoresponsive sensor and adjust an output of said electronic control as a function of the offset, wherein the output of said at least one magnetoresponsive sensor is associated with a coordinate system associated with one of said at least one magnetoresponsive sensor and said magnetic element, said coordinate system being defined by data points having a first and second component, said electronic control being operable to average corresponding values of sampled data points to determine the offset.

A calibration method of a control which is operable to calibrate a vehicular magnetic level sensor, said level sensor being operable to determine an orientation of a movable component of a vehicle relative to a frame member of the vehicle, said method comprising the steps of:

• providing a magnetoresponsive sensor which is operable to sense a magnetic field generated by a magnetic element, said magnetic element being movable relative to said magnetoresponsive sensor;
• sampling at least two data points of an output of said magnetoresponsive sensor;
• determining an offset of the output of said magnetoresponsive sensor in response to the at least two data points;
• and
• adjusting an output of said control in response to the offset.