Self-adaption mains supply control device for X-ray machine
A grid power supply and control device technology, applied in the field of medical equipment, can solve problems affecting the hardness and dose of radiation, low high voltage, and affecting the normal operation of equipment, etc.
Inactive Publication Date: 2012-07-25
NANJING PERLOVE RADIAL VIDEO EQUIP
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[0002] Existing medical X-ray machines, especially surgical X-ray machine technologies, mostly use high-voltage closed-loop control to achieve stable X-ray machine high voltage, and filament closed-loop control to achieve stable X-ray machine current. The power supply range generally requires ±10 %, but when the high-power machine is working and the capacity of the grid power supply circuit is tight, the grid voltage will be difficult to support the power supply range of the equipment, and there will be instability of high voltage voltage and filament current, resulting in low high voltage and low current during exposure. Small, directly affects the hardness and dose of radiation, and at the same time affects the normal operation of other equipment
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[0006] This device is composed of five parts including network power detection unit (1), tube current sampling unit (2), mode selection unit (3), current control unit (4), and exposure time control unit (5), as shown in Figure 1 shown. The network power detection adopts a large dynamic and high linearity isolated voltage sensor. The mode selection uses a single-chip microcomputer to collect data and judge and process it. The network power change is divided into several intervals and corresponds to the corresponding working mode. Control it at a higher current level, and adjust the exposure time by sampling the current at the same time. The larger the current, the shorter the exposure time.
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The invention relates to a self-adaption mains supply control device for an X-ray machine and belongs to the technical field of medical apparatus and instruments. The self-adaption mains supply control device for the X-ray machine is structurally characterized by consisting of a network power supply detection unit, a tube current sampling unit, a mode selection unit, a current control unit and an exposure time control unit. The self-adaption mains supply control device for the X-ray machine has the technical points that the change conditions of a network power supply and tube current are automatically acquired when exposure is performed by using the network power supply detection unit and the tube current sampling unit; the sampled voltage of the network power supply and the sampled current are judged by the mode selection unit, and the tube current and the exposure time are controlled by selecting a corresponding work mode. The self-adaption mains supply control device for the X-ray machine has the advantages that the network power supply meets the requirement of the normal operation of a machine through controlling the output power of the network power supply so as to meet the high-voltage requirement; the requirement of the dosage of rays are met through time control. The self-adaption mains supply control device for the X-ray machine has a very obvious effect especially in occasions of high-power photography and low stability of the network power supply.
Description
technical field [0001] The invention belongs to the technical field of medical equipment. Background technique [0002] Existing medical X-ray machines, especially surgical X-ray machine technologies, mostly use high-voltage closed-loop control to achieve stable X-ray machine high voltage, and filament closed-loop control to achieve stable X-ray machine current. The power supply range generally requires ±10 %, but when the high-power machine is working and the capacity of the grid power supply circuit is tight, the grid voltage will be difficult to support the power supply range of the equipment, and there will be instability of high voltage voltage and filament current, resulting in low high voltage and low current during exposure. Small, it directly affects the hardness and dose of radiation, and at the same time affects the normal operation of other equipment. Invention content: [0003] The purpose of the present invention is to overcome the above-mentioned defects, i...
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IPC IPC(8): H05G1/30
Inventor 李劲生徐俊
Owner NANJING PERLOVE RADIAL VIDEO EQUIP