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A Realization Method of Flat Panel Detector Circuit for Reducing Patient Leakage Current

The technology of a flat panel detector and its implementation method is applied in the field of medical X-ray flat panel detectors, which can solve the problems of large leakage current of patients and achieve the effect of reducing the leakage current of patients

Active Publication Date: 2018-09-25
SHANGHAI IRAY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a flat panel detector circuit implementation method for reducing patient leakage current, which is used to solve the problem of excessive patient leakage current when the flat panel detector is powered by an internal battery in the prior art. big problem

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  • A Realization Method of Flat Panel Detector Circuit for Reducing Patient Leakage Current
  • A Realization Method of Flat Panel Detector Circuit for Reducing Patient Leakage Current
  • A Realization Method of Flat Panel Detector Circuit for Reducing Patient Leakage Current

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Embodiment 1

[0045] Such as figure 1 and figure 2 As shown, this embodiment provides a method for implementing a flat panel detector circuit that reduces patient leakage current. The method includes adding a patient leakage current protection circuit 7 between the power input interface 6 of the flat panel detector and the battery circuit 4 .

[0046] In this embodiment, the patient leakage current protection circuit is mainly composed of a control circuit module and a MOS transistor switch module, and the circuit respectively controls the conduction and shutdown of the corresponding MOS transistor switches Q1 and Q2 through the secondary control circuits U1 and U2. To achieve the purpose of reducing the patient leakage current.

[0047] Specifically, the patient leakage current protection circuit 7 includes: a first-stage MOS transistor switch Q1, a first-stage control circuit U1, a first-stage resistor R1, a second-stage MOS transistor switch Q2, a second-stage control circuit U2, a fir...

Embodiment 2

[0059] Such as figure 1 and image 3 As shown, this embodiment provides a method for implementing a flat panel detector circuit that reduces patient leakage current. The method includes adding a patient leakage current protection circuit 7 between the power input interface 6 of the flat panel detector and the battery circuit 4 .

[0060] In this embodiment, the patient leakage current protection circuit 7 is mainly composed of a diode module, and the circuit achieves the purpose of reducing the patient leakage current through the principle of forward conduction and reverse cutoff of the diode.

[0061] Specifically, the patient leakage current protection circuit 7 includes:

[0062] From the power input interface 6 to the battery circuit 4, the first-stage diode Q1 and the second-stage diode Q2 are connected in series in sequence; wherein, the anode of the first-stage diode Q1 is connected to the power input interface, and the cathode is connected to the second stage The ano...

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Abstract

The invention provides a flat panel detector circuit implementation method capable of reducing the patient leakage current. The method comprises the steps that a patient leakage current protection circuit is added between a power supply input interface and a battery circuit of a flat panel detector. When the power supply input interface is in external connection with a power adapter, the flat panel detector can directly utilize an external power source for power supply or charging a battery, when the power supply input interface is not in external connection with the power adapter and directly utilizes an internal battery for power supply, if a patient makes contact with the power supply input interface, the patient and the ground form a loop, and then the patient leakage current protection circuit can control the loop current, so that the patient leakage current is reduced, and it is ensured that the X-ray flat panel detector meets part of requirements of B-type applications. Besides, the circuit in the method does not affect normal charging of the battery.

Description

technical field [0001] The invention relates to the field of medical X-ray flat-panel detectors, in particular to a method for realizing a flat-panel detector circuit that reduces patient leakage current. Background technique [0002] In recent years, continuous advancements in the fields of photolithography and microelectronics have made the application of large-area X-ray detectors integrated with TFT array-based readout devices more and more popular. The charge collection and readout electronic components of the TFT-based flat panel system are close to the material layer that interacts with X-rays, making the X-ray detector compact and can be converted into digital images in real time. Therefore, X-ray detectors are becoming The backbone of medical radiation imaging, industrial flaw detection and security inspection. [0003] The imaging process of the X-ray flat panel detector needs to go through the imaging conversion process from X-rays to visible light, and then from...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05G1/54
CPCH05G1/54
Inventor 姜婷马扬喜
Owner SHANGHAI IRAY TECH