KR100676217B1 - A charging method of a portable x-ray photographing apparatus - Google Patents

Abstract

A method for charging a portable x-ray photographing apparatus is provided to prevent a breakdown by blocking a surge and a noise generated when a charging unit of the X-ray photographing apparatus is charged. A method for charging a portable x-ray photographing apparatus includes the steps of: a charging start step of charging 13 regions during n us per period, stopping during (26-n) us, and repeating 10 times the above process until being charged during 13 us; a charging buffer step of continuing 13 us charging and stopping; and a charging end step of charging the 13 regions during (13-n) us per period and repeating the stop 10 times.

Description

A Charging Method of A Portable X-ray photographing Apparatus

1 is a block diagram of a portable X-ray photographing apparatus that can be charged using a vehicle battery according to the prior art.

2 is a block diagram of a high voltage generator of a portable X-ray photographing apparatus that can be charged using a vehicle battery according to the prior art.

3 is a block diagram of a portable X-ray imaging apparatus according to the present invention.

4 is a control circuit unit and an IGBT driving circuit of the portable X-ray photographing apparatus according to the present invention.

5 is a program coding of a controller (PIC16F84A) of a portable X-ray imaging apparatus according to the present invention.

FIG. 6 is a view for explaining an input signal of a 12/320 transformer controlled by program coding of a portable X-ray imaging apparatus according to the present invention. FIG.

7 is a view showing a state of charge of a capacitor according to the present invention.

** Description of the symbols for the main parts of the drawings **

100: high voltage generator 200: X-ray generator

300: X-ray detection device

101: power input unit 102: IGBT

103: 12/320 transformer 104: live part

105: inverter 106: high voltage transformer converter

107: converter 108: control circuit

108a: voltage divider 108b: comparator

108c: controller

The present invention relates to a charging method of a portable X-ray photographing apparatus, and more particularly, surge and noise due to switching that can be caused during charging by dividing the charging of the charger into an initial charging stage, a charging buffer stage, and a late charging stage. It relates to a charging method of a portable X-ray photographing apparatus that can prevent the.

1 is a block diagram of a portable X-ray photographing apparatus which can be charged using a vehicle battery according to the prior art, and FIG. 2 is a block diagram of a high voltage generator of the portable X-ray photographing apparatus according to the prior art.

As shown in FIG. 1 and FIG. 2, the portable X-ray photographing apparatus according to the related art includes a high voltage generator 10, an X-ray generator 20, and an X-ray detector 30. The high voltage generator 10 is a power input unit 11, the input of the DC 12V of the vehicle battery, a 12/320 transformer 13 for boosting the DC 12V to 320V, the input of the 12/320 transformer 13 IGBT 12 for applying pulses in a pulse form, a charging unit 14 to which the output of the 12/320 transformer 13 is charged, a control circuit unit for controlling the charging of the charging unit 14 and the operation of the IGBT 12. (18), an inverter (15) for changing the output of the charging unit (14) to high frequency alternating current, a high voltage transformer (16) for boosting the output of the inverter (15) to 50 kV to 100 kV, and the high voltage transformer (16). It converts the output of the direct current to the converter 17 for supplying to the X-ray generator 20. However, fluctuations in the input voltage in the initial stages of charging the voltage pulse applied to the 12/320 transformer 13 by the IGBT 12 and the control circuit unit 18 and the stage in which the charging is completed cause surge and noise. There is this.

Accordingly, the present invention has been made to solve the above problems, an object of the present invention is to provide the X-ray from the surge and noise induced phenomenon that may be caused when charging the X-ray generator using a vehicle battery 12V It is to provide a charging method to protect the photographing device.

The present invention for achieving the above object is composed of a high voltage generator, an X-ray generator, an X-ray detection device, the power supply is a power input unit for inputting the DC 12V of the vehicle battery, 320V DC 12V A 12/320 transformer boosting to a 12/320 transformer, an IGBT for applying the input of the 12/320 transformer in the form of a pulse, a charging unit for charging the output of the 12/320 transformer, a control circuit unit for controlling the charging of the charging unit and the operation of the IGBT. A high voltage transformer for boosting the output of the inverter to 50 kV to 100 kV, a converter for converting the output of the high voltage transformer into direct current and supplying the output to the X-ray generator; Is done. The control circuit unit includes a controller, a voltage divider and a comparator to drive the controller by comparing the voltage output from the 12/320 transformer by the voltage divider and the voltage divided by the voltage divider by the comparator.

Charging of the charging unit is characterized by consisting of the initial charging stage, the charging buffer stage, the charge late stage by the control circuit.

In addition, the initial charging step is continued to charge for 13 ms by charging 10 times for each n cycles and stopping for (26-n) ms for 13 cycles for each 13 cycles. 13 ㎲ charge and stop is continued, the late charge stage is characterized in that 13 areas are charged (13-n) 마다 for each cycle and n ㎲ stop is repeated 10 times.

The power input unit may include a cigar jack to be charged using a vehicle battery, and the X-ray detecting apparatus may be a digital detector.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the present invention.

Referring to Figures 3 to 6 the structure and operation of the X-ray imaging apparatus of the present invention will be described.

3 is a block diagram of a portable X-ray photographing apparatus according to the present invention, FIG. 4 is a circuit diagram of a control circuit unit of a portable X-ray photographing apparatus according to the present invention, and FIG. 5 is a diagram of a portable X-ray photographing apparatus according to the present invention. Program coding of PIC16F84A, Figure 6 is a view for explaining the input signal of the 12/320 transformer controlled by the program coding of the portable X-ray imaging apparatus according to the present invention, Figure 7 is a portable X-ray imaging according to the present invention A diagram for describing a process of charging a device.

As shown in FIG. 3, the portable X-ray photographing apparatus according to the present invention includes a high voltage generator 100, an X-ray generator 200, and an X-ray detector 300. 100 is applied to the power input unit 101, the DC 12V of the vehicle battery is input, the 12/320 transformer 103 for boosting the DC 12V to 320V, the input of the 12/320 transformer 103 in the form of a pulse IGBT 102, the charging unit 104 is charged with the output of the 12/320 transformer 103, the control circuit unit 108 for controlling the charging of the charging unit 104 and the operation of the IGBT 102, the Inverter 105 for changing the output of the charging unit to alternating current of high frequency, high voltage transformer 106 for boosting the output of the inverter 105 to 50kV ~ 100kV, and converts the output of the high voltage transformer 106 to direct current to the X A converter 107 is supplied to the ray generator. As shown in FIG. 4, the control circuit unit 108 is provided with a voltage divider 108a, a comparator 108b, and a controller 108c such that the voltage 320V output from the 12/320 transformer 103 is divided into the voltage divider 108a. The voltage divided by 5V or less and divided by 5V or less by the comparator 108b is used to compare conditions. The comparators A and B charge only in the high and low states, respectively, and the comparators A and B show the fully charged state in the low and high states, respectively, and charging stops. As described above, the controller 108c of the control circuit unit is driven in accordance with the condition of the comparator.

Charging of the charging unit 104 is performed by the control circuit unit 107 is composed of the initial charging stage, the charging buffer stage, the late charging stage.

In addition, as shown in FIG. 6A, the initial charging step includes 13 areas, which are charged for n㎲ at each cycle, and the operation of stopping for (26-n) ㎲ is repeated 10 times, until the battery is charged for 13㎲. As shown in FIG. 6B, the charge buffering step continues charging and stopping 13 정지, and as shown in FIG. 6C, the charge and charge step is 13 zones (13-n) ㎲ for each period. Charge and n㎲ stop is repeated 10 times.

FIG. 5 shows program coding using PIC16F84 as a controller to control the above charging. By switching to the IGBT under the control of the PIC16F84, the input voltage of the 12/320 transformer oscillates at 38.46 kHz and is input to the 12/320 transformer. The input voltage can effectively improve the surge and noise phenomena due to switching at the start and finish stages of charging by gradually increasing the width of the pulse in the charging stage and gradually decreasing the width of the pulse in the late charging stage. . According to the above charging method, as shown in FIG. 7, the time required for charging until the charging unit reaches 320V is 33 seconds, thereby controlling the time at which the charging is completed, thereby effectively preventing the surge and noise due to switching. It can be improved.

The present invention is not limited to the above-described embodiments, and the scope of application is not limited, and various modifications can be made without departing from the gist of the present invention as claimed in the claims.

As described above, the charging method of the portable X-ray photographing apparatus using the vehicle battery proposed by the present invention effectively prevents surge and noise caused when the charging unit of the X-ray photographing apparatus is charged. Failure can be prevented.

Claims (4)

An X-ray generator for generating X-rays using electron emission; An X-ray detecting apparatus for detecting X-rays generated by the X-ray generating apparatus and transmitted through the subject; And A high voltage generator supplying power to the X-ray generator; Made up of The high voltage generator, A power input unit for inputting DC 12V of a vehicle battery, a 12/320 transformer for boosting the DC 12V to 320V, an IGBT for applying the input of the 12/320 transformer in a pulse form, and the output of the 12/320 transformer is charged. Controller for controlling the charging unit, charging of the charging unit and the operation of the IGBT and the comparator for comparing the voltage divided by the voltage divider and the voltage divided by the voltage divider output from the 12/320 transformer and the controller driven according to the comparison result of the comparator A control circuit unit including an inverter, an inverter for converting the output of the charging unit into alternating current of high frequency, a high voltage transformer for boosting the output of the inverter to 50 to 100 kV, and an X-ray generator for converting the output of the high voltage transformer into direct current. In the charging method of a portable X-ray photographing apparatus comprising a converter for supplying to, Charging of the charging unit is divided into an initial charging stage, a charging buffer stage, and a late charging stage by the control circuit unit, The initial charging step is carried out until the charging is performed for 13 ns for 13 regions, and the operation for stopping for (26-n) n is repeated 10 times for 13 ns, The charging buffer stage 13㎲ charging and stopping is continued, The late charging step is a charging method of a portable X-ray photographing apparatus, characterized in that 13 areas are charged (13-n) ㎲ and n㎲ stop is repeated 10 times for each period. The method of claim 1, The power input unit is a charging method of a portable x-ray photographing apparatus, characterized in that provided with a cigar jack to be charged using a vehicle battery. The method according to claim 1 or 2, The X-ray detecting device is a charging method of a portable X-ray imaging apparatus, characterized in that the digital detector. The method of claim 3, The controller of the control circuit unit is a charging method of a portable X-ray photographing apparatus, characterized in that the PIC16F84.

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