Linear position sensor

摘要

A sensor used to sense the position of an attached movable object. The sensor can be mounted to a pneumatic actuator. The sensor includes a housing that has a pair of cavities or pockets separated by a wall. A magnet carrier is positioned within one of the cavities and a magnet is coupled to the magnet carrier. The magnet carrier is coupled to the moveable object. A magnetic sensor is positioned in the other of the cavities. The magnetic sensor generates an electrical signal that is indicative of a position of the movable object.

主权项

1. A sensor assembly for sensing the linear position of a moveable object, comprising:
a housing defining a longitudinal axis; at least one magnet positioned in the housing in a relationship generally co-linear with the longitudinal axis of the housing, the magnet generating a magnetic field having a magnitude and a direction, the magnet being adapted for movement at an angle relative to the longitudinal axis of the housing in response to movement of the moveable object; and at least one sensor positioned in the housing a fixed transverse distance from the longitudinal axis of the housing and a variable transverse distance from the magnet depending upon the angle of the magnet relative to the longitudinal axis of the housing, the sensor sensing the magnitude and direction of the magnetic field generated by the magnet and generating an electrical signal that is indicative of the linear position of the magnet and the moveable object.