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PLC control loop of examining table and the examining table

A control loop and examination table technology, applied in the direction of electrical program control, program control in sequence/logic controller, medical science, etc., can solve problems affecting MRI imaging, etc., and achieve the effect of avoiding EMI interference

Pending Publication Date: 2016-02-17
BEIJING TOP GRADE HEALTHCARE MEDICAL EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a PLC control circuit of the examination bed and the examination bed to solve the problem that the electromagnetic interference of the control system affects the imaging of MRI

Method used

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  • PLC control loop of examining table and the examining table
  • PLC control loop of examining table and the examining table

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Embodiment Construction

[0032] In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, the following will be described in detail with reference to the accompanying drawings and specific embodiments.

[0033] Aiming at the problems in the prior art that under the strong magnetic field environment of MRI, the stability of the control system is greatly affected, thereby causing communication interruption, lowering the position positioning accuracy, and at the same time, the EMI of the control system also affects the MRI imaging, and provides a The PLC control circuit of the examination bed and the examination bed control the power-off of the relay 25 and the circuit system through the PLC controller 1, so as to avoid the EMI interference of the circuit system to the MRI.

[0034] like figure 1 As shown, the PLC control loop of the examination bed according to the embodiment of the present invention is applied to the Positron Emission ...

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Abstract

The invention provides a PLC control loop of an examining table and the examining table. The PLC control loop is applied to a positron emission computer tomography (PET)-magnetic resonance imaging (MRI) examining table. The PLC control loop includes an upper level control loop, a vertical control loop, a lower level control loop, a rotation control loop, a relay, a PLC controller and a programmable logic controller PLC control loop of a communication adapter plate which is connected to the PLC controller through a data line, wherein the relay has a coil and a plurality of contacts and is connected with the upper level control loop, the vertical control loop, the lower level control loop and the rotation control loop respectively; the PLC controller is connected with the relay; and the plurality of contacts of the relay are respectively connected with the upper level control loop, the vertical control loop, the lower level control loop and the rotation control loop respectively; the PLC controller makes the coil of the relay be powered off so that the plurality of contacts are disconnected with the upper level control loop, the vertical control loop, the lower level control loop and the rotation control loop.

Description

technical field [0001] The invention relates to the field of PLC control of a programmable logic controller of medical equipment, in particular to a PLC control circuit of an examination bed and an examination bed. Background technique [0002] PET-MRI is a new technology that combines the molecular imaging capabilities of positron emission computed tomography (PET) with the superior soft tissue contrast capabilities of magnetic resonance imaging (MRI). The matching PET-MRI bed will send the patient to PET or MRI for examination through rotation, translation and lifting. In the MRI strong magnetic field environment, the stability of the control system will be greatly affected, such as communication interruption, location accuracy reduction, etc., and the electromagnetic interference (EMI) of the control system will affect the MRI imaging. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a PLC control circuit of an examination bed and an...

Claims

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Application Information

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IPC IPC(8): G05B19/05A61B5/055A61B6/04
Inventor 张平刘文彬熊凤彬
Owner BEIJING TOP GRADE HEALTHCARE MEDICAL EQUIP CO LTD