Fall arresting device event generation and monitoring

A fall arresting device comprising:

• a device housing;
• a shaft within the device housing;
• a rotor assembly rotatably connected to the shaft, the rotor assembly comprising a disc and a drum, the disc comprising at least one region of a ferromagnetic material;
• an extendable lifeline connected to and coiled around the drum, the lifeline configured to connect the fall arresting device to a user or a support structure, wherein the extension of the lifeline causes the disc and drum to rotate around the shaft;
• a first magnetic sensor positioned stationary relative to the device housing, the first magnetic sensor positioned adjacent to the disc;
• a first magnet comprising a hard-magnetic material, the first magnet positioned stationary relative the device housing and the first magnetic sensor, wherein the first magnetic sensor is configured to detect a change in a first magnetic field produced by the first magnet when the disc rotates about the shaft, the change in the first magnetic field induced by the at least one region of the ferromagnetic material being brought within close proximity to the first magnet as the disc rotates;
• a second magnetic sensor positioned stationary relative to the device housing, the second magnetic sensor positioned adjacent to the disc;
• and
• a second magnet comprising a hard-magnetic material, the second magnet positioned stationary relative the device housing and the second magnetic sensor, wherein the second magnetic sensor is configured to detect a change in a second magnetic field produced by the second magnet when the disc rotates about the shaft, the change in the second magnetic field induced by the at least one region of the ferromagnetic material being brought within close proximity to the second magnet as the disc rotates,
• wherein the first magnetic sensor and the second magnetic sensor positioned about 90° out of phase in a quadrature encoding configuration, the first magnetic sensor and the second magnetic sensor configured to determine based on the quadrature encoding configuration, a rotational direction of the disc.

A method for obtaining data from a fall arresting device, the method comprising:

• rotating in a disc of the fall arresting device, wherein the fall arresting device comprises:
• a device housing;
• a shaft within the device housing;
• a rotor assembly rotatably connected to the shaft, the rotor assembly comprising a disc and a drum, the disc comprising at least one region of a ferromagnetic material;
• an extendable lifeline connected to and coiled around the drum, the lifeline configured to connect the fall arresting device to a user or a support structure, wherein the extension of the lifeline causes the disc and drum to rotate around the shaft;
• a magnetic sensor positioned stationary relative to the device housing, the magnetic sensor positioned adjacent to the disc;
• and
• a magnet comprising a hard-magnetic material, the magnet positioned stationary relative the device housing and the magnetic sensor, wherein the magnetic produces a magnetic field, and
• processing circuitry connected to the magnetic sensor;
• with the processing circuitry, measuring disruptions in the magnetic field generated by the magnet using the magnetic sensor, wherein the disruptions in the magnetic field are generated by rotating the disc so that the at least one region of the ferromagnetic material is brought in close proximity to the magnet or the magnetic sensor to cause the magnetic sensor to measure a change in the magnetic field,
• analyzing the measured disruptions in the magnetic field with the processing circuitry to determine at least one of a rotation angle of the disc, a number of rotations of the disc, a speed of rotation of the disc, or an acceleration of rotation of the disc.