Movement system for moving an object, patient couch and method for operating a movement system

摘要

A movement system includes a drive having a drive shaft, a mechanism that converts an alteration to a rotational angle of the drive shaft into an alteration to an object position, and a rotational angle sensor for detecting the alteration to the rotational angle. The movement system includes a reference sensor for emitting a reference signal when the object enters a predetermined reference volume, and a controller communicating with the rotational angle sensor and the reference sensor. The controller is configured for determining a total rotational angle from alterations to the rotational angle detected according to the reference signal and for activating the drive for rotating the drive shaft by a reference rotational angle determined as a function of a predetermined reference positional value and the total rotational angle. The movement system also includes a calibration sensor for emitting a calibration signal when the object enters a predetermined calibration volume.

主权项

1. A movement system for moving an object, the movement system comprising:
a drive comprising a drive shaft; a mechanism that converts an alteration to a rotational angle of the drive shaft into an alteration to a position of the object; a rotational angle sensor operable to detect the alteration to the rotational angle; a reference sensor operable to emit a reference signal when the object enters a predetermined reference volume; a controller configured to communicate with the rotational angle sensor and the reference sensor, the controller being further configured to determine a total rotational angle from alterations to the rotational angle detected according to the reference signal and to activate the drive for rotating the drive shaft by a reference rotational angle determined as a function of a predetermined reference positional value and the total rotational angle; and a calibration sensor operable to emit a calibration signal when the object enters a predetermined calibration volume, wherein the controller is configured to store a current total rotational angle or a value derived therefrom when detecting the calibration signal as calibration information, and wherein the controller is configured to determine the reference rotational angle as a function of the calibration information.