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Exposure protection system of X-ray generator

A protection system and generator technology, applied to X-ray equipment, electrical components, etc., can solve problems such as misjudgment, wrong action, unfavorable rays, etc., to achieve high reliability, ensure radiation safety, and avoid radiation risks.

Active Publication Date: 2012-08-29
BEIJING WANDONG MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are certain risks in software control itself, which is prone to misjudgment and wrong action, which is not conducive to fast, effective and accurate control of the output of rays

Method used

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  • Exposure protection system of X-ray generator
  • Exposure protection system of X-ray generator
  • Exposure protection system of X-ray generator

Examples

Experimental program
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Effect test

Embodiment Construction

[0014] Attached below figure 1 , attached figure 2 A specific facility circuit of the present invention will be described.

[0015] The generator exposure protection circuit in this embodiment is composed of photocouplers E1A~D and E2A~D, NOR gates U1A~B, OR gates U3A~C, non-inverting drivers U2A~C, and inverting drivers U4A~B, as figure 2 . Among them, E1 and E2 use TLP521-4, U1 uses 74LS27, U3 uses 74LS32, U2 uses 74LS07, and U4 uses 74LS06.

[0016] Hand brake 1 gear control signal (HAND1 SIGNAL) is isolated by photocoupler E1A and input to the first input terminal of NOR gate U1A; image system allows exposure preparation control signal (IMAGE PERPARE SIGNAL) to be input to after being isolated by photocoupler E1C The second input terminal of the NOR gate U1A; the exposure preparation control signal (INTERFACE PERPARE SIGNAL) is input to the third input terminal of the NOR gate U1A after being driven by the non-inverting driver U2A. When the above three control signal...

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Abstract

The invention relates to an exposure protection system of an X-ray generator, belonging to the field of medical equipment. The system comprises a generator control circuit and a generator exposure protection circuit, wherein the generator control circuit is connected with various control signals of the X-ray generator and outputs an exposure preparation control signal and an exposure control signal; the generator exposure protection circuit is connected with various control signals of the X-ray generator and the exposure preparation control signal and the exposure control signal which are output by the generator control circuit; and the output exposure preparation control signal and an exposure protection signal are respectively used for controlling an exposure preparation circuit and an exposure circuit in an inversion control circuit in the X-ray generator. The invention can realize the function of switching off a ray source under the conditions that faults occur in the generator and control signals of a generator interface are abnormal and can also realize the function of switching off the ray source under the conditions that any system fault occurres and image interface control signals are abnormal.

Description

technical field [0001] The invention relates to an exposure protection device for a medical X-ray generator, which belongs to the field of medical appliances, in particular to a multiple comprehensive protection system for controlling the exposure of an X-ray generator. Background technique [0002] X-ray products are common human body detection equipment in clinical medicine. The safety control of X-ray exposure dose directly affects the radiation safety of patients and doctors. When the generator is in continuous sequence shooting, the hand brake control signal is always valid, and the exposure control is controlled by the pulse output of the image system. When the generator is in single shot shooting, the exposure control is only controlled by the hand brake signal. In any case, the hand brake is lifted or the equipment fails, and the X-ray output should be stopped immediately to ensure radiation safety. The current method uses software to read the hand brake and fault s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05G1/54
Inventor 赵晶谢宇峰任志林江秋萍
Owner BEIJING WANDONG MEDICAL TECH CO LTD
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