Control system of rotating end of CT system

Abstract

The invention provides a control system of the rotating end of a CT system, and relates to the technical field of CT equipment. The control system includes a host, a slip ring connected to the host through a CAN bus, and a rotating end control panel connected to the slip ring through another CAN bus; the rotating end control panel is connected to a control CT rotating end; the main control chip ofthe rotating end control panel adopts an SOC chip; the SOC chip is an integrated circuit formed by ARM and FPGA; the ARM part of the SOC chip operates control logic; and the rotating end control panel automatically operates control instructions, sends the control instructions to the logic and receives the feedback of the rotating end. The FPGA chip of the rotating end control panel is replaced into the SOC chip; the logic controlling the rotating end on the host is placed on the SOC to operate; the host sends start, interrupt and end instructions, and the rest rotating end control instructions are automatically operated by the rotating end control panel; and therefore, CAN instruction and messages can be greatly reduced, the distributed control of the CT system can be formed, and the operation stability of the CT system can be greatly enhanced.

Description

technical field [0001] The invention relates to a control system for a rotating end of a CT system, belonging to the technical field of CT equipment. Background technique [0002] At present, the CT system controls the operation of the rotating end mainly through the stationary end after receiving the software instructions of the upper computer, and then sending them to the rotating end through the CAN bus through the slip ring for control. The instructions of the rotating end are sent by the upper computer and receive the feedback information of the rotating end. A large number of CAN commands and CAN messages are transmitted on the process slip ring, resulting in a large bus operation load, which leads to unstable communication and affects the stability of the system. The transmission rate of the CAN bus in this process is 1M / s, and the fastest sending time of a single command is 1ms. This control has low real-time performance and cannot realize control with high real-time...

AI Technical Summary

Problems solved by technology

[0002] At present, the CT system controls the operation of the rotating end mainly through the stationary end after receiving the software instructions of the upper computer, and then sending them to the rotating end through the CAN bus through the slip ring for control. The instructions of the rotating end are sent by the upper computer and receive the feedback information of the rotating end. A large number of CAN commands and CAN messages are transmitted on the process slip ring, resulting in a large bus operation load, resulting in unstable communication and affecting the stability of the system

The transmission rate of the CAN bus in this process is 1M / s, and the fastest sending time of a single command is 1ms. This control has low real-time performance and cannot realize control with high real-time requirements.

[0003] In the prior art, a single instruction is also used to replace the original two or more instructions. This solution can reduce the number of certain instructions, but there are still many messages on the CAN bus overall, which will still affect the stability of the system.

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