Collimator apparatus and motion control method
AssigneeJiangsu Rayer Medical Technology Co., Ltd
InventorsDongshan Fu, Xueguo Cao, Fu Zhang, Jingxian Zhang, Jingjing Zhao
Life of this patent
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Abstract
Provided are a collimator apparatus and a motion control method. The collimator apparatus includes a transmission assembly and at least two collimators. The transmission assembly is connected to the at least two collimators. The transmission assembly is configured to implement automatic switching of different collimators through rotation action.
Claims21
A collimator apparatus, comprising a transmission assembly and at least two collimators, wherein the transmission assembly is connected to the at least two collimators, and the transmission assembly is configured to implement automatic switching of different collimators through rotation action;
- and
- wherein the collimator apparatus further comprises at least two assembly components, wherein each of the at least two assembly components is provided with a respective one of the at least two collimators, the transmission assembly is connected to the each of the at least two assembly components, the transmission assembly is configured to drive different assembly components through rotation to implement automatic switching of different collimators, and the transmission assembly comprises a rotation seat assembly, a fixing seat, a motor assembly, and an electromagnetic pin assembly, wherein the motor assembly and the fixing seat are connected to the rotation seat assembly, the fixing seat is provided with a beam hole, and the rotation seat assembly is configured to, under driving of the motor assembly, drive the at least two assembly components to move to rotate a designated one of the at least two collimators to a position facing the beam hole;
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- the electromagnetic pin assembly is configured to automatically position, identify, and lock the rotation seat assembly, the electromagnetic pin assembly comprises an electromagnetic pin, a mounting ring, and first micro switches;
- the electromagnetic pin is fixed to the rotation seat assembly by the mounting ring and rotates with the rotation seat assembly, the electromagnetic pin is energized in a case where the motor assembly drives the rotation seat assembly to rotate, and a metal rod of the electromagnetic pin retracts into the electromagnetic pin;
- the electromagnetic pin is de-energized in a case where the motor assembly has driven the rotation seat assembly to rotate to a desired position, and the metal rod extends out of the electromagnetic pin and is inserted into a tapered hole of the fixing seat so that the rotation seat assembly is not allowed to rotate;
- and the metal rod is in contact with one of the first micro switches at a corresponding position, the one of the first micro switches is triggered, and in the case where the one of the first micro switches is triggered, the one of the first micro switches is configured to send an electrical signal to allow a system to identify a type of one of the at least two collimators facing a center of the beam hole.
A collimator apparatus, comprising a transmission assembly and at least two collimators, wherein the transmission assembly is connected to the at least two collimators, and the transmission assembly is configured to implement automatic switching of different collimators through rotation action;
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- wherein the transmission assembly comprises a rotation seat assembly, a primary position feedback mechanism, and a fixing seat, and the collimator apparatus further comprises a secondary position feedback mechanism and a control circuit;
- the at least two collimators are each a secondary collimator, and mounted on the rotation seat assembly, and the rotation seat assembly is configured to drive the at least two collimators to rotate to allow a designated one of the at least two collimators to rotate to a position facing a beam hole;
- the primary position feedback mechanism comprises a rotor position detection sensor, a driver, and a stepper motor, the stepper motor is connected to the rotation seat assembly and configured to drive the rotation seat assembly to rotate under an instruction of the driver, and the rotor position detection sensor is configured to monitor a position of the stepper motor in real time and automatically switch open-loop control and closed-loop control according to a condition;
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- the secondary position feedback mechanism comprises a grating, a reading head, and a data collection and conversion module;
- and the reading head is configured to read a scale code of the grating and transmit the scale code to the control circuit through the data collection and conversion module.
Dependencies are inferred from the claim text.