公开(公告)号：EP3605806A1

公开(公告)日：2020-02-05

申请号：EP17933001.4

申请日：2017-12-04

申请人： Tsinghua University

发明人： YE, Peiqing ,  ZHANG, Luhong ,  ZHANG, Hui

IPC分类号： H02K11/22

摘要： Disclosed is a dual-sensing feedback and transmission system for a linear motor, belonging to the technical field of medical equipment and motors. The system includes a linear motor, a transmission mechanism, and a dual-sensing displacement detection mechanism. One end of the transmission mechanism is fixedly connected to a mover (7) of the linear motor, and the other end thereof is located outside a stator (6) of the linear motor and fixedly connected to a leaf (1) of a multi-leaf collimator directly or by means of a connecting block (2). The dual-sensing displacement detection mechanism is a dual-sensing linear displacement sensor, and includes two sets of reading devices (5) for reading displacement information, and a matching reference ruler (4). The reading devices (5) are fixed to an end or exterior of a casing of the stator (6) of the linear motor close to the leaf (1) of the multi-leaf collimator. The reference ruler (4) is fixed onto a connecting rod (3). The technical solution is used to drive the leaf (1) of the multi-leaf collimator in radiotherapy equipment and feed position information of the leaf (1) of the multi-leaf collimator. Thus, the integration of structural functions of mechanical transmission and position detection can be realized, and the narrow installation space requirements and the dual-sensing requirements of Class III medical instruments can be satisfied.