CN1565385A - Mobile diagnostic X-ray apparatus for medical purpose - Google Patents

Mobile diagnostic X-ray apparatus for medical purpose Download PDF

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Publication number
CN1565385A
CN1565385A CN03141489.3A CN03141489A CN1565385A CN 1565385 A CN1565385 A CN 1565385A CN 03141489 A CN03141489 A CN 03141489A CN 1565385 A CN1565385 A CN 1565385A
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China
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control
voltage
output
control section
circuit
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CN03141489.3A
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CN100366222C (en
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吴志敏
芮文庭
毕谢伟
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Shanghai Medical Equipment Works Co ltd
SHANGHAI THALES ELECTRON TUBES CO.,LTD.
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SHANGHAI MEDICAL APPLIANCE CO Ltd
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Abstract

The invention concerns a portable medical diagnostic X ray machine. The mainly control circuit of the X ray machine provided by the invention comprises a power section, a charge section, a control section, a storage battery assembly, a beam limiting section, a exposure control section, a frequency conversion section, a high pressure generating section and a bulb tube. The 220v supply voltage enters the said power supply section, which is connected with the control section and storage battery section, then being transferred to the beam limiting section, exposure control section and frequency conversion section, said charge section is partially connected with the control section, the storage assembly and frequency conversion section. Said high pressure generation portion is output to the bulb tube. The invention adopts the novel structure design, and has advantages of safe service performance, compact and light complete machine structure, capable of moving and photographing among the narrow space of the sick beds.

Description

Portable medical diagnostic X-ray apparatus
Technical field
The present invention relates to a kind of medical diagnosis device, be specifically related to a kind of portable medical diagnostic X-ray apparatus.
Background technology
At present, continuous development along with medical device technology, the medical diagnostic X-ray apparatus of various uses continues to bring out, aspect portable medical diagnostic X-ray line apparatus, medical diagnostic X-ray apparatus also begins to compact conformation, can look patient's situation and requirement, not be subjected to the other photography development of place and power generating facilities and power grids restriction can carrying out bed.The high-frequency inversion technology makes its compact conformation, computer program control, the wireless remote control photography, storage battery power supply can obtain stable power output, charging process is controlled automatically, and the high-quality image quality of high efficiency, low dosage and generation can be arranged, and flexibly conveniently diagnoses photography.
Summary of the invention
Purpose of the present invention is exactly that a kind of novel employing high-frequency inversion technology, integrated combination head will be provided; Accumulator provides work capacity; The medical diagnostic X-ray apparatus that compact integral structure is light and handy.
For this reason, the present invention is to provide a kind of portable medical diagnostic X-ray apparatus, its be a kind ofly move flexibly, the medical diagnostic X-ray apparatus of storage battery power supply, compartment remote control photography.It mainly is made up of main frame, guidance panel, remote controller, remote-controlled receiver, high-frequency inversion and x ray generator, manual beam-defining clipper, transverse arm, air spring, sheet carton and crate.
The complete machine major control circuit of a kind of portable medical diagnostic X-ray apparatus provided by the invention is taken place partly by power pack, live part, control section, accumulator cell assembly, beam-defining clipper part, exposure control section, frequency conversion part, high pressure and bulb is formed.
When machinery requirement is diagnosed patient, provide the galvanic current source by accumulator cell assembly, through power pack, produce the required running voltage of control section.Accumulator cell assembly provides converter working power partly through live part simultaneously.Patient is taken the photograph the setting of penetration capacity amount (KV) amount that the adjustment of sheet position and control takes the photograph the sheet effect and x-ray dose (mAs) amount by beam-defining clipper.Use exposure-control device, both Manual exposure switch or teleexposure device carried out exposing operation; Control section, the output control signal, control frequency conversion part, the high frequency electric source that the dc source of accumulator cell assembly output is reverse into 20kHz inputs to high pressure generation part, produces high pressure and is input to bulb, produces x-ray and takes the photograph the sheet operation, the voltage and the electric current of bulb output simultaneously, partly be input to control section by high pressure generation part feedback voltage through frequency conversion, the KV amount of setting with control section compares with the mAs amount, controls exposure KV amount and the mAs amount of adjusting bulb output.
When machine need charge, the alternating current 220V power supply produces needed working power via power pack and offers control section, by control section output control signal, control the voltage that alternating current 220V charges to accumulator cell assembly through live part, the size of electric current reaches after accumulator cell assembly electric energy abundance, the index signal of complete charge.
The frequency conversion of a kind of portable medical diagnostic X-ray apparatus provided by the invention partly is a drive plate, and it mainly is made up of photoelectricity coupling, main inverter circuit, main inverter circuit control, filament inversion control and feedback control.
The exposure ready signal of control section output is by the photoelectricity coupling unit, and control filament inversion part is exported the high-frequency inversion filament voltage earlier, and paramount Hair Fixer first portion removes to light the bulb filament.Then, control section output exposure signal, by the photoelectricity coupling unit, control main inverter circuit control circuit output 20kHz control signal, the control main inverter circuit is reverse into the high frequency electric source of 20kHz with dc source, inputs to high pressure generation part, and bulb KV, the mA feedback signal of part output takes place high pressure simultaneously, through the size of feedback circuit to main inversion control and the control of filament inverter circuit KV, mA. feed back to control section, control its time of exposure.
Main inverter circuit is in the frequency conversion part of a kind of portable medical diagnostic X-ray apparatus provided by the invention: the accumulator cell assembly dc source is through capacitor C 1, C 2And inductance L 1After the filtering, join Q 1, D 2, Q 2, D 3, Q 3, D 4, Q 4, D 5Bridge circuit on, as main inverter control circuit pulse transformer T 1Be high level, when T2 was low level, dc source (+) was through Q 1→ P 1→ P 2→ Q 4→ dc source (-).When main inverter control circuit, pulse transformer T1 is a low level, T 2During for high level, dc source (+) is through Q 3→ P 2→ P 1→ Q 2→ dc source (-) is like this at P 1, P 2Two ends produce a frequency by T 1, T 2The alternating voltage of control reaches the inversion process that is become high-frequency ac power by dc source.
In the frequency conversion of a kind of portable medical diagnostic X-ray apparatus provided by the invention part main inverter control circuit by the exposure signal of control section input through D 23Photoelectrical coupler → I C6→ D 5→ D 1→ Q 1Be input to I C1In, I C1The output high-frequency signal is through Q 2, Q 3, Q 4, Q 5Promote pipe, join the T of pulse transformer 1, T 2In, making the pulse transformer alternation, the output inverter control signal simultaneously, joins I by the feedback signal of KV to main inverter circuit C1In, adjust I C1Export the width of high-frequency signal, reach the purpose of inversion control.
In the frequency conversion of a kind of portable medical diagnostic X-ray apparatus that the embodiment of the invention the provides part filament inverter circuit by the ready signal of control section input and exposure signal through photoelectronic coupler D 24, D 23→ I C6→ D 5, D 6→ I C4→ I C6→ D 2→ Q 6Be input to IC 2In, IC 2Output high frequency 20kHz, AC signal is through Q 7, Q 8, Q 9, Q 10Promote pipe, join high pressure generation part, make the bulb filament spot.Simultaneously, the feedback signal by mA joins IC 2The middle IC that adjusts 2The width of output high-frequency signal reaches the size that control mA amount is exported.
The part feedback takes place through high pressure and comes in KV amount, mA amount behind the X ray that feedback circuit is produced by bulb in the frequency conversion of a kind of portable medical diagnostic X-ray apparatus that the embodiment of the invention the provides part, and KV feeds back through R 29→ R 30→ I C8Be input to the I of main inversion control Deng feedback circuit C1In, adjust the KV amount.
The mA feedback is through R 38→ I C8Be input to the I of filament inverter circuit Deng feedback circuit C2The middle mA amount of adjusting.The feedback signal of KV and mA is through R simultaneously 69, R 70→ I C9→ R 71, R 72To control section, control its time of exposure and light exposure.
The live part of a kind of portable medical diagnostic X-ray apparatus provided by the invention is a charging panel, and it mainly is made up of rectifier filter, charge power supply, feedback control, working power circuit.Wherein, alternating current 220V is put in order power supply, behind rectifier filter, joins charge power supply and partly produces about 300V dc source accumulator cell assembly is charged; By feedback control, adjust charging current size and charging interval simultaneously, when carrying out normal exposure when taking the photograph sheet, accumulator cell assembly provides power supply, by the working power part, produces the needed working power of frequency conversion part.By feedback control, output signal to control section simultaneously, cross when low when the accumulator cell assembly supply voltage, feedback control is exported a low-voltage signal, and after control section was accepted, the output index signal cut off the exposing operation circuit simultaneously.
Current rectifying and wave filtering circuit is that the alternating current 220V supply voltage is through electric fuse F in the live part of a kind of portable medical diagnostic X-ray apparatus provided by the invention 1, C 1, L 1, C 2Filtering joins D 1, D 2, D 5, D 6The rectification circuit rectification is again through C 8, C 9After the filtering, offer charge power supply, wherein, R 1Be the protection critesistor.
The charge power supply circuit is the alternating current 220V supply voltage in the live part of a kind of portable medical diagnostic X-ray apparatus provided by the invention, and through joining behind the current rectifying and wave filtering circuit on the T1 transformator, the charging control signal of the output of control section is through R 2→ D 4→ Q 2→ join HIC 1On make HIC 1Switching Power Supply work with the T1 composition.Through D 8→ D 11→ R 20→ F 2→ to about direct current 300V charge power supply of accumulator cell assembly output.Through D 10→ C 21→ IC 1→ C 22Export a direct current 15V power supply, offer the working power of charging panel integrated circuit.
The feedback control signal of coming from accumulator cell assembly sampling is through R 38→ D 7→ R 16C 14→ D 3→ R 14R 15C 13Join HIC 1On, adjust the size of its charging output voltage and electric current.
Working power circuit is in the live part of a kind of portable medical diagnostic X-ray apparatus provided by the invention: the accumulator cell assembly out-put supply is through F 2Electric fuse R 20→ D 28After join T 2On the transformator, the working signal of control section output is through R3 → D19 → Q3 → join HIC 2On, make HIC 2With T 2The Switching Power Supply work of forming is through D 24C 42Output+24V voltage behind the rectifier filter is through R 60Dividing potential drop C 49I C1C 51Voltage regulation filtering output+15V voltage is through D 26C 50I C4C 52Output-15V voltage after the rectifying and wave-filtering voltage stabilizing, this+the 24V+15V-15V supply voltage offers the required running voltage of frequency conversion part.In addition, through D 25C 55R 61Rectifying and wave-filtering+the 12V supply voltage, by the control signal of control section output through R 4→ D 23→ R 62→ Q 1Output to beam-defining clipper, light beam-defining clipper light, expose and take the photograph position adjustment before the sheet, simultaneously+24V voltage is through R 65C 63→ R 67R 68→ D 22→ R 55C 39→ D 18→ R 53, R 54, C 38Join HIC 2On, control the stable of its output voltage.
Its feedback control circuit is in the live part of a kind of portable medical diagnostic X-ray apparatus provided by the invention: by charge power supply to the charging voltage of accumulator cell assembly through R 21, R 22, R 23, R 24After the dividing potential drop, by I C2D→ R 31→ D 17→ D 7The control charging voltage is adjusted VR 2Can adjust the charging voltage size.By R 25R 26→ I C2A→ R 30→ D 16→ D 7The control charging current is adjusted VR 1Can adjust the charging current size.After being charged to certain voltage, charging current diminishes through I C2A→ I C2B→ R 41Output control signals to control section, the control section output signal stops charging.
Wherein TM1 is a thermistor (temperature) sensor, and the accumulator cell assembly battery temperature of measurement is crossed high pressure, and its resistance reduces, through I C2D→ I C2C→ R 42Offer control section, make the control section output signal stop charging.
When normal exposure was taken the photograph the sheet duty, the voltage of accumulator cell assembly output was through F 2→ R 20→ R 21, R 22, R 23, R 24Voltage after partial is by I C2D→ I C2C→ R 42Offer control section, when the accumulator cell assembly brownout, control section receives signal, and output voltage is crossed low index signal, cuts off the exposing operation circuit simultaneously.
The high pressure of a kind of portable medical diagnostic X-ray apparatus provided by the invention take place part mainly by high frequency transformation, multiplication of voltage boost, filament transformation, KV feedback, mA feedback form.Wherein, the high-frequency inversion voltage that frequency conversion is partly exported joins the multiplication of voltage booster circuit after the high frequency transformation, be raised to certain voltage after, join on the bulb, make it produce X ray.The high-frequency inversion filament voltage that frequency conversion is partly exported after the filament transformation, joins on the filament of bulb, light filament, produce the mA amount of X ray, multiplication of voltage is boosted voltage partly after the KVmA feedback simultaneously, offer the frequency conversion part, control the output of its KV amount and mA amount.
The high pressure generating unit parallel circuit of a kind of portable medical diagnostic X-ray apparatus provided by the invention is: high frequency inverter is partly exported in frequency conversion, after transformator T1 boosts, by capacitor C 1～C 64And diode D 1～D 32The multiplication of voltage booster circuit produces high pressure, is added on the anode of bulb and the negative electrode and produces X ray.Filament inverter voltage by frequency conversion is partly exported after T2 transformator transformation, is added on the filament of X ray bulb, produces the mA amount.Simultaneously, the feedback voltage by diode D17 and capacitor C 33, C34 form feeds back to the frequency conversion part through V2, control mA amount.By R1, R2, C1, C2, the feedback voltage that C65, C66 form feeds back to the KV amount that its generation is partly controlled in frequency conversion through V1.
The force balance analysis of the balance transverse arm of the integrated bulb head of the support of a kind of portable medical diagnostic X-ray apparatus provided by the invention is defined as: should be able to balance, reliable when the bulb focus is located in liftoff 2050mm-562mm vertical range.
This balanced structure is except adopting two air springs supports; adopt the parking brake braking again; the parking brake braking is as just last protective measure; when failure conditions appears in an air spring; can occur after discharging the parking brake braking is not very serious balance phenomenon; if find that balance is unbalance, should change air spring immediately.
The brake gear of a kind of portable medical diagnostic X-ray apparatus provided by the invention is: the complete machine brake drag is not less than 98N; After the machine castor braking, when being not more than 5 ° at the angle of inclination, should be able to operate as normal; At the angle of inclination 10 ° the time, must not overturning.
The present invention adopts the two-way brake gear, on two BOGEY WHEELs independently brake gear is installed respectively, in case the brake gear of a wheel lost efficacy, the brake gear of another wheel should guarantee that also the complete machine brake drag is not less than 98N.Wherein, the acquisition of 98N brake drag data, the rigidity that can regulate tripping spring realizes.
A kind of portable medical diagnostic X-ray apparatus provided by the invention has its outstanding feature, can look patient's situation and the usefulness that requirement can be done the other X ray photography of bed in emergency room, isolation room, ward, operating room etc., also can make the stand-by equipment of conventional X-ray examination, can carry out the photography of head, extremity, breast, abdomen various piece easily to the partes corporis humani position.
A kind of portable medical diagnostic X-ray apparatus provided by the invention adopts inversion transformation technique, incorporate combination head, the complete machine core technology has been used the high-frequency inversion technology, make the bulb miniaturization integrated, have the high-quality image quality of high efficiency, low dosage and generation, and eliminated the high tension cable between bulb and the high frequency generator.Next adopts microcomputer to control, and microcomputer is controlled and improved operating characteristics, makes operation and demonstration more easy, clear, and the user program control function and the perfect overload protecting circuit of three state are arranged, and guarantees swift to operate safe and reliable with performance.Also have, the present invention adopts battery that work capacity is provided, and uses special accumulator, and stable output is provided, and is not subjected to the restriction of electrical network and the influence of voltage ripple of power network; Automatically charging control, the service life of guaranteeing battery.
A kind of portable medical diagnostic X-ray apparatus provided by the invention adopts light-duty structural design, the serviceability of safety; Compact integral structure, light and handy, can between narrow and small sick bed, move and photograph; Use air spring and weighing apparatus power parking brake, operate light, flexibly mobile.
Below, the present invention is described in further detail in conjunction with the accompanying drawings and embodiments.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a complete machine controlling party block diagram of the present invention.
Fig. 3 is a frequency conversion part controlling party block diagram of the present invention.
Fig. 4 is frequency conversion part main inverter circuit figure of the present invention.
Fig. 5 is the main inverter control circuit figure of frequency conversion part of the present invention.
Fig. 6 is frequency conversion part filament inverter circuit figure of the present invention.
Fig. 7 is frequency conversion part feedback control circuit figure of the present invention.
Fig. 8 is a live part block diagram of the present invention.
Fig. 9 is live part current rectifying and wave filtering circuit figure of the present invention.
Figure 10 is a live part charge power supply circuit diagram of the present invention.
Figure 11 is live part working power circuit figure of the present invention.
Figure 12 is live part feedback control circuit figure of the present invention.
Figure 13 is a high pressure generation part block diagram of the present invention.
Figure 14 is high pressure generating unit parallel circuit figure of the present invention.
Figure 15 is the force balance analysis chart of balance transverse arm of the present invention.
Figure 16 is the structural representation of brake gear of the present invention.
Specific embodiments
As shown in Figure 1, a kind of portable medical diagnostic X-ray apparatus provided by the invention mainly is made up of main frame 8, guidance panel 6, remote controller 7, remote-controlled receiver 5, high-frequency inversion and x ray generator 1, manual beam-defining clipper 2, transverse arm 3, air spring 4, sheet carton and crate 9; Wherein, be connected with guidance panel 6, sheet carton and crate 9, remote controller 7 on the described main frame 8, described air spring 4 in addition, also has remote-controlled receiver 5 by transverse arm 3 control high-frequency inversions and x ray generator 1, the manually motion of beam-defining clipper 2 on described X-ray production apparatus.
As shown in Figure 2, a kind of portable medical diagnostic X-ray apparatus major control circuit provided by the invention is made up of power pack, live part, control section, accumulator cell assembly, beam-defining clipper part, exposure control section, frequency conversion part, high pressure generation part and bulb.At first, the 220V supply voltage enters described power pack, live part, and the same control section of described power pack, accumulator cell assembly link to each other, and described control section exports beam-defining clipper part, exposure control section, frequency conversion part to; In addition, the same control section of described live part, accumulator cell assembly, frequency conversion part part link to each other, and described frequency conversion partly exports high pressure generation part to, and described high pressure part takes place exports bulb to.
Like this, when machinery requirement is diagnosed patient, provide the galvanic current source,, produce the required running voltage of control section through power pack by accumulator cell assembly.Simultaneously, accumulator cell assembly provides converter working power partly through live part.Patient is taken the photograph the setting of the adjustment of sheet position and control panel KV amount and mAs amount by beam-defining clipper.Use exposure-control device, both Manual exposure switch or teleexposure device carried out exposing operation; Control section, the output control signal, control frequency conversion part, the high frequency electric source that the dc source of accumulator cell assembly output is reverse into 20kHz inputs to high pressure generation part, produces high pressure and is input to bulb, produces x-ray and takes the photograph the sheet operation, the voltage and the electric current of bulb output simultaneously, partly be input to control section by high pressure generation part feedback voltage through frequency conversion, the KV amount of setting with control section compares with the mAs amount, controls exposure KV amount and the mAs amount of adjusting bulb output.
When machine need charge, the alternating current 220V power supply produces needed working power via power pack and offers control section, by control section output control signal, control the voltage that alternating current 220V charges to accumulator cell assembly through live part, the size of electric current reaches after accumulator cell assembly electric energy abundance, the index signal of complete charge.
As shown in Figure 3, the frequency conversion of a kind of portable medical diagnostic X-ray apparatus provided by the invention partly is a drive plate, and it mainly is made up of photoelectricity coupling, main inverter circuit, main inversion control, filament inversion control and feedback control circuit.Wherein, dc source produces high frequency inverter by described main inverter circuit, above-mentioned control section links to each other with described photoelectricity coupling, described photoelectricity coupling links to each other with described main inversion control, filament inversion control, described main inversion control links to each other with main inverter control circuit, frequency conversion part of the present invention also comprises feedback control circuit, and described feedback control circuit is with described control section, high pressure generation part, and described main inversion control, filament inversion control link to each other.
Like this, the exposure ready signal of control section output is by the photoelectricity coupling unit, and control filament inversion part is exported the high-frequency inversion filament voltage earlier, and paramount Hair Fixer first portion removes to light the bulb filament.Then, control section output exposure signal, by the photoelectricity coupling unit, control main inverter circuit control circuit output 20kHz control signal, the control main inverter circuit is reverse into the high frequency electric source of 20kHz with dc source, inputs to high pressure generation part, and bulb KV, the mA feedback signal of part output takes place high pressure simultaneously, feed back to control section through feedback circuit to the size of the control of main inversion control and filament inverter circuit KV, mA, control its time of exposure.
Main inverter circuit as shown in Figure 4 in the frequency conversion part of a kind of portable medical diagnostic X-ray apparatus that the embodiment of the invention provides.It passes through the accumulator cell assembly dc source through capacitor C 1, C 2And inductance L 1After the filtering, join by audion, diode Q 1, D 2, Q 2, D 3, Q 3, D 4, Q 4, D 5On the bridge circuit that connects to form with transformator T1, T2, produce inverter circuit; Like this, as main inverter control circuit pulse transformer T 1Be high level, when T2 was low level, dc source (+) was through Q 1→ P 1→ P 2→ Q 4→ dc source (-).When main inverter control circuit, pulse transformer T1 is a low level, T 2During for high level, dc source (+) is through Q 3→ P 2→ P 1→ Q 2→ dc source (-) is like this at P 1, P 2Two ends produce a frequency by T 1, T 2The alternating voltage of control reaches the inversion process that is become high-frequency ac power by dc source.
In the frequency conversion of a kind of portable medical diagnostic X-ray apparatus that the embodiment of the invention the provides part main inverter control circuit as shown in Figure 5, its by the exposure signal of control section input through D 23Photoelectrical coupler → I C6→ D 5→ D 1→ Q 1Serial connection is input to I C1In, I C1The output high-frequency signal, warp and described I C1The Q that links to each other 2, Q 3, Q 4, Q 5Promote pipe, join the T of pulse transformer 1, T 2In, making the pulse transformer alternation, the output inverter control signal simultaneously, joins I by the feedback signal of KV to main inverter circuit C1In, adjust I C1The width of output high-frequency signal like this, reaches the purpose of inversion control; Wherein, the I that provides of the embodiment of the invention C1IC chip is TA76494.
In the frequency conversion of a kind of portable medical diagnostic X-ray apparatus that the embodiment of the invention the provides part filament inverter circuit as shown in Figure 6, its by the ready signal of described control section input and exposure signal through photoelectronic coupler D 24, D 23→ I C6→ D 5, D 6→ I C4→ I C6→ D 2→ Q 6Be input to IC 2In, IC 2Output high frequency 20kHz, AC signal warp and described IC 2The Q that links to each other 7, Q 8, Q 9, Q 10Promote pipe, join described high pressure generation part, make the bulb filament spot.Simultaneously, the feedback signal by mA joins IC 2The middle IC that adjusts 2The width of output high-frequency signal reaches the size that control mA amount is exported; Wherein, the IC that provides of the embodiment of the invention 2IC chip is TA76494.
In the frequency conversion of a kind of portable medical diagnostic X-ray apparatus that the embodiment of the invention the provides part feedback control circuit as shown in Figure 7, the part feedback takes place through described high pressure and comes in KV amount, mA amount behind its X ray that is produced by bulb, KV feeds back through R 29→ R 30→ I C8Be input to I in the main inverter control circuit Deng feedback circuit C1In, adjust the KV amount.
The mA feedback is through R 38→ I C8Be input to the I of filament inverter circuit Deng feedback circuit C2The middle mA amount of adjusting.Simultaneously, KV and the feedback signal of mA are through R in parallel 69, R 70→ I C9→ R 71, R 72Export described control section to, control its time of exposure and light exposure.
As shown in Figure 8, the live part of a kind of portable medical diagnostic X-ray apparatus provided by the invention is a charging panel, and it mainly is made up of rectifying and wave-filtering, charge power supply, feedback control, working power circuit.Wherein, the alternating current 220V power supply behind rectifier filter, joins charge power supply and partly produces about 300V dc source accumulator cell assembly is charged; Simultaneously, by feedback control, adjust charging current size and charging interval; Like this, when carrying out normal exposure when taking the photograph sheet, accumulator cell assembly provides power supply, by the working power part, produces the needed working power of frequency conversion part.By feedback control, output signal to control section simultaneously, cross when low when the accumulator cell assembly supply voltage, feedback control is exported a low-voltage signal, and after control section was accepted, the output index signal cut off the exposing operation circuit simultaneously.
As shown in Figure 9, current rectifying and wave filtering circuit is in the live part of a kind of portable medical diagnostic X-ray apparatus of providing of the embodiment of the invention: the alternating current 220V supply voltage is through electric fuse F 1, C 1, L 1, C 2Filtering joins by diode D 1, D 2, D 5, D 6The rectification circuit rectification of forming is again through C 8, C 9After the filtering, offer charge power supply; Wherein, also comprise protection critesistor R in the described current rectifying and wave filtering circuit of the embodiment of the invention 1
As shown in figure 10, the charge power supply circuit is in the live part of a kind of portable medical diagnostic X-ray apparatus that the embodiment of the invention provides: the alternating current 220V supply voltage, through joining behind the current rectifying and wave filtering circuit on the T1 transformator, the charging control signal of the output of described control section is through R 2→ D 4→ Q 2→ serial connection joins HIC 1On make HIC 1Switching Power Supply work with the T1 composition.D through linking to each other with transformator T2 outfan 8→ D 11→ R 20→ F 2→ to about direct current 300V charge power supply of accumulator cell assembly output.D through linking to each other with transformator T2 outfan 10→ C 21→ IC 1→ C 22Connect direct current 15V power supply of back output, offer the working power of charging panel integrated circuit.
The feedback control signal of coming from accumulator cell assembly sampling is through R 38→ D 7→ R 16C 14→ D 3→ R 14, R 15, C 13Join HIC 1On, adjust the size of its charging output voltage and electric current.
As shown in figure 11, the working power control circuit is in the live part of a kind of portable medical diagnostic X-ray apparatus of providing of the embodiment of the invention: the accumulator cell assembly out-put supply is through F 2Electric fuse R 20→ D 28After join T 2On the transformator, the working signal of control section output is through R3 → D19 → Q3 → join HIC 2On, make HIC 2With T 2The Switching Power Supply work of forming.D through linking to each other with transformator T2 outfan 24, C 42Output+24V voltage behind the rectifier filter, warp and C 42The R that links to each other 60Dividing potential drop C 49, I C1, C 51Voltage regulation filtering output+15V voltage, the diode D through linking to each other with transformator T2 outfan 26, C 50, I C4, C 52Output-15V voltage after the rectifying and wave-filtering voltage stabilizing, this+24V ,+15V ,-the 15V supply voltage offers the required running voltage of frequency conversion part.In addition, the D through linking to each other with transformator T2 outfan 25, C 55, R 61Rectifying and wave-filtering+the 12V supply voltage, by the control signal of control section output through R 4→ D 23→ R 62→ Q 1Output to beam-defining clipper, light beam-defining clipper light, expose and take the photograph the preceding position adjustment of sheet, simultaneously ,+24V voltage is through R 65, C 53→ R 67, R 68→ D 22→ R 55, C 39→ D 18→ R 53, R 54, C 38Serial connection joins HIC 2On, control the stable of its output voltage.
As shown in figure 12, feedback control circuit is in the live part of a kind of portable medical diagnostic X-ray apparatus of providing of the embodiment of the invention: by described charge power supply to the charging voltage of accumulator cell assembly R through serial connection 21, R 22, R 23, R 24After the dividing potential drop, by I C2D→ R 31→ D 17→ D 7The control charging voltage is adjusted VR 2Can adjust the charging voltage size; By R 25R 26→ I C2A→ R 30→ D 16→ D 7The control charging current is adjusted variable resistance VR 1Can adjust the charging current size; After being charged to certain voltage, charging current diminishes through I C2A→ I C2B→ R 41Output control signals to control section, the control section output signal stops charging;
Wherein, with described R 23TM1 in parallel is a thermistor (temperature) sensor, and the accumulator cell assembly battery temperature of measurement is crossed high pressure, and its resistance reduces, through I C2D→ I C2C→ R 42Offer control section, make the control section output signal stop charging.
When normal exposure was taken the photograph the sheet duty, the voltage of accumulator cell assembly output was through F 2→ R 20→ R 21, R 22, R 23, R 24Voltage after partial is by I C2D→ I C2C→ R 42Offer control section, when the accumulator cell assembly brownout, control section receives signal, and output voltage is crossed low index signal, cuts off the exposing operation circuit simultaneously.
As shown in figure 13, the high pressure of a kind of portable medical diagnostic X-ray apparatus provided by the invention take place part mainly by high frequency transformation, multiplication of voltage boost, filament transformation, KV feedback, mA feedback form.Wherein, the high-frequency inversion voltage that described frequency conversion is partly exported joins the multiplication of voltage booster circuit after the high frequency transformation, be raised to certain voltage after, join on the bulb, make it produce X ray.The high-frequency inversion filament voltage that described frequency conversion is partly exported after the filament transformation, joins on the filament of bulb, light filament, produce the mA amount of X ray, simultaneously, multiplication of voltage is boosted voltage partly after the KVmA feedback, offers the frequency conversion part, controls the output of its KV amount and mA amount.
As shown in figure 14, the high pressure generating unit parallel circuit of a kind of portable medical diagnostic X-ray apparatus that the embodiment of the invention provides is: high frequency inverter is partly exported in described frequency conversion, after transformator T1 boosts, by capacitor C 1～C 64And diode D 1～D 32The multiplication of voltage booster circuit of forming produces high pressure, is added on the anode of bulb and the negative electrode and produces X ray.Filament inverter voltage by frequency conversion is partly exported after T2 transformator transformation, is added on the filament of X ray bulb, produces the mA amount.Simultaneously, the feedback voltage by diode D17 and capacitor C 33 C34 form feeds back to the frequency conversion part through V2, control mA amount.By R1, R2, C1, C2, the feedback voltage that C65, C66 form feeds back to the KV amount that its generation is partly controlled in frequency conversion through V1.
The force balance analysis of the balance transverse arm 3 of the integrated bulb head of the support of a kind of portable medical diagnostic X-ray apparatus that the embodiment of the invention provides as shown in figure 15, according to standard-required, should be able to balance, reliable when the bulb focus is located in liftoff 2050mm-562mm vertical range.
This balanced structure is except adopting two air springs supports; adopt the parking brake braking again; the parking brake braking is as just last protective measure; when failure conditions appears in an air spring; can occur after discharging the parking brake braking is not very serious balance phenomenon; if find that balance is unbalance, should change air spring immediately.
The structure of the air spring that the present invention uses is as follows:
Serviceability temperature scope :-20 ℃～60 ℃
Stretching, extension farthest position limit is stressed to be: F≤70kg
Average nominal power: Fa=749N
Normal access times: 20000 times
Under 1.5 times of nominal pressure stretching actions, characteristic is constant; Under 3 times of nominal pressures stretch, do not dismember.
Ff is a parking brake brake force, and Fa ' is that air spring is stressed, and F1 is bulb and beam-defining clipper gross weight
Stressing conditions is analyzed, and in horizontal level seasonal epidemic pathogens spring stress maximum, and is in always and is subjected to
Therefore pressure condition just carries out failure analysis with this situation.
Parking brake brake force will produce 200～500N, and level air spring length is 695mm,
To produce maximum pressure to air spring when removing parking brake brake force, in working order, gas
Spring belongs to the elongated depression bar of the hinged chain in two ends, calculates its critical pressure:
Fa’＝100×1000/110＝909.1N
Elastic modulus E=the 210Gpa of steel
Cross sectional moment of inertia Iz=490mm 4
Critical pressure is Pcr = π 2 EI l 2 = 2.1 × 10 3 N
Because air spring operating pressure Fa ' is less than nominal pressure Fa, an air spring can bear and face
The pressure P cr=2.1 of boundary * 10 3N is greater than operating pressure, therefore, and when an air spring loses
During effect serious balance phenomenon can not appear.
The brake gear of a kind of portable medical diagnostic X-ray apparatus provided by the invention as shown in figure 16.According to standard-required, the complete machine brake drag is not less than 98N; After the machine castor braking, when being not more than 5 ° at the angle of inclination, should be able to operate as normal; At the angle of inclination 10 ° the time, must not overturning.
The present invention adopts the two-way brake gear, on two BOGEY WHEELs independently brake gear is installed respectively, in case the brake gear of a wheel lost efficacy, the brake gear of another wheel should guarantee that also the complete machine brake drag is not less than 98N.
The acquisition of 98N brake drag data, the rigidity that can regulate tripping spring 10 realizes.
The structure of the spring 10 that the present invention uses is as follows:
Material: stainless steel spring steel wire 1Cr18Ni9
Steel wire diameter: D=1.2mm
Extension spring external diameter: D=12mm
Footpath: D in the extension spring 2=10.8mm
Number of active coils: N=33
Number of total coils: N 1=34
Checking is calculated:
Balance pivot is to brake shoes distance L 1=20mm
Balance pivot is to extension spring distance L 2=120mm
The coefficient of friction F=0.8 of brake shoes and castor
The pressure F of brake shoes and castor n=(98-49)/0.8=61.25N
The tensile force f of extension spring
F n* L1=F * L2 substitution parameter,
Get 61.25 * 20=F * 120
F＝10N
Like this, can know that by calculating the pulling force that discharges brake is got elastic modulus of shear G=73000MPA, N=GD about about 10N 4/ 8D 2 3K PThe substitution parameter,
33＝73000×1.2 4/8×10.8 3K P
K P＝0.46N/mm
Stretcher strain amount λ=F/K P
λ＝21mm
Promptly when spring deflection equals 21mm, brake shoes produces the brake drag of 98N, therefore, is 23mm-26mm adjusting spring deflection, and then the brake drag that produces of brake shoes is greater than 98N, thereby guarantees this machine at the angle of inclination 10 ° the time, can overturning and move.
More than, a kind of portable medical diagnostic X-ray apparatus that embodiments of the invention provide has been done detailed description with complete, clear, simple and clear and definite term to the present invention, thus, and manufacturing and use that any technical staff of this area all can be correlated with.Should understand that those skilled in the art can change, revise and of equal value the replacement all parts among the specifically described embodiment of the present invention under the situation that does not break away from the spirit and scope of the present invention; Personnel with this technology should understand that also above-mentioned description only is exemplary, and they are not intended in the explanation of any concrete narrow sense.

Claims (14)

1, a kind of portable medical diagnostic X-ray apparatus mainly is made up of main frame (8), guidance panel (6), remote controller (7), remote-controlled receiver (5), high-frequency inversion and x ray generator (1), manual beam-defining clipper (2), transverse arm (3), air spring (4), sheet carton and crate (9); Wherein, be connected with guidance panel (6), sheet carton and crate (9), remote controller (7) on the described main frame (8), described air spring (4) is by transverse arm (3) control high-frequency inversion and x ray generator (1), the manually motion of beam-defining clipper (2), in addition, on described X-ray production apparatus, also has remote-controlled receiver (5); It is characterized in that this X-ray production apparatus major control circuit is taken place partly by power pack, live part, control section, accumulator cell assembly, beam-defining clipper part, exposure control section, frequency conversion part, high pressure and bulb is formed, the 220V supply voltage enters described power pack, live part, the same control section of described power pack, accumulator cell assembly link to each other, and described control section exports beam-defining clipper part, exposure control section, frequency conversion part to; In addition, the same control section of described live part, accumulator cell assembly, frequency conversion part part link to each other, and described frequency conversion partly exports high pressure generation part to, and described high pressure part takes place exports bulb to;
Like this, when machinery requirement is diagnosed patient, provide the galvanic current source,, produce the required running voltage of control section through power pack by accumulator cell assembly; Simultaneously, accumulator cell assembly provides converter working power partly through live part, by beam-defining clipper patient is taken the photograph the adjustment of sheet position and control panel KV amount and the setting that mAs measures, and carries out exposing operation with exposure-control device; Control section, the output control signal, control frequency conversion part, the high frequency electric source that the dc source of accumulator cell assembly output is reverse into 20kHz inputs to high pressure generation part, produces high pressure and is input to bulb, produces x-ray and takes the photograph the sheet operation, the voltage and the electric current of bulb output simultaneously, partly be input to control section by high pressure generation part feedback voltage through frequency conversion, the KV amount of setting with control section compares with the mAs amount, controls exposure KV amount and the mAs amount of adjusting bulb output;
When machine need charge, the alternating current 220V power supply produces needed working power via power pack and offers control section, by control section output control signal, control the voltage that alternating current 220V charges to accumulator cell assembly through live part, the size of electric current reaches after accumulator cell assembly electric energy abundance, the index signal of complete charge.
2, a kind of portable medical diagnostic X-ray apparatus according to claim 1 is characterized in that described frequency conversion partly is drive plate, and it mainly is made up of photoelectricity coupling, main inverter circuit, main inversion control, filament inversion control and feedback control circuit; Wherein, dc source produces high frequency inverter by described main inverter circuit, above-mentioned control section links to each other with described photoelectricity coupling, described photoelectricity coupling links to each other with described main inversion control, filament inversion control, described main inversion control links to each other with main inverter control circuit, described frequency conversion part also comprises feedback control circuit, and described feedback control circuit is with described control section, high pressure generation part, and described main inversion control, filament inversion control link to each other;
Like this, the exposure ready signal of control section output is by the photoelectricity coupling unit, and control filament inversion part is exported the high-frequency inversion filament voltage earlier, and paramount Hair Fixer first portion removes to light the bulb filament; Then, control section output exposure signal, by the photoelectricity coupling unit, control main inverter circuit control circuit output 20kHz control signal, the control main inverter circuit is reverse into the high frequency electric source of 20kHz with dc source, inputs to high pressure generation part, and bulb KV, the mA feedback signal of part output takes place high pressure simultaneously, feed back to control section through feedback circuit to the size of the control of main inversion control and filament inverter circuit KV, mA, control its time of exposure.
3, a kind of portable medical diagnostic X-ray apparatus according to claim 2 is characterized in that described main inverter circuit is: by the accumulator cell assembly dc source through capacitor C 1, C 2And inductance L 1After the filtering, join by audion, diode Q 1, D 2, Q 2, D 3, Q 3, D 4, Q 4, D 5On the bridge circuit that connects to form with transformator T1, T2, produce inverter circuit; Like this, as main inverter control circuit pulse transformer T 1Be high level, when T2 was low level, dc source (+) was through Q 1→ P 1→ P 2→ Q 4→ dc source (-).When main inverter control circuit, pulse transformer T1 is a low level, T 2During for high level, dc source (+) is through Q 3→ P 2→ P 1→ Q 2→ dc source (-), like this, at P 1, P 2Two ends produce a frequency by T 1, T 2The alternating voltage of control reaches the inversion process that is become high-frequency ac power by dc source.
4, a kind of portable medical diagnostic X-ray apparatus according to claim 2 is characterized in that described main inverter control circuit is: by the exposure signal of control section input through D 23Photoelectrical coupler → I C6→ D 5→ D 1→ Q 1Serial connection is input to I C1In, I C1The output high-frequency signal, warp and described I C1The Q that links to each other 2, Q 3, Q 4, Q 5Promote pipe, join the T of pulse transformer 1, T 2In, making the pulse transformer alternation, the output inverter control signal simultaneously, joins I by the feedback signal of KV to main inverter circuit C1In, adjust I C1The width of output high-frequency signal like this, reaches the purpose of inversion control.
5, a kind of portable medical diagnostic X-ray apparatus according to claim 2 is characterized in that described filament inverter circuit is: by the ready signal of described control section input and exposure signal through photoelectronic coupler D 24, D 23→ I C6→ D 5, D 6→ I C4→ I C6→ D 2→ Q 6Be input to IC 2In, IC 2Output high frequency 20kHz, AC signal warp and described IC 2The Q that links to each other 7, Q 8, Q 9, Q 10Promote pipe, join described high pressure generation part, make the bulb filament spot; Simultaneously, the feedback signal by mA joins IC 2In, adjust IC 2The width of output high-frequency signal reaches the size that control mA amount is exported.
6, a kind of portable medical diagnostic X-ray apparatus according to claim 2 is characterized in that feedback control circuit is: by the amount of the KV behind the X ray of bulb generation, mA amount, take place partly to feed back to come through described high pressure, KV feeds back through R 29→ R 30→ I C8Be input to I in the main inverter control circuit Deng feedback circuit C1In, adjust the KV amount;
The mA feedback is through R 38→ I C8Feedback circuit is input to the I of filament inverter circuit C2In adjust the mA amount, simultaneously, the feedback signal of KV and mA is through R in parallel 69, R 70→ I C9→ R 71, R 72Export described control section to, control its time of exposure and light exposure.
7, a kind of portable medical diagnostic X-ray apparatus according to claim 1 is characterized in that described live part is a charging panel, and it mainly is made up of rectifying and wave-filtering, charge power supply, feedback control, working power circuit; Wherein, the alternating current 220V power supply behind rectifier filter, joins charge power supply and partly produces about 300V dc source accumulator cell assembly is charged; Simultaneously, by feedback control, adjust charging current size and charging interval; Like this, when carrying out normal exposure when taking the photograph sheet, accumulator cell assembly provides power supply, by the working power part, produces the needed working power of frequency conversion part; Simultaneously, by feedback control, output signal to control section, cross when low when the accumulator cell assembly supply voltage, feedback control is exported a low-voltage signal, and after control section was accepted, the output index signal cut off the exposing operation circuit simultaneously.
8, a kind of portable medical diagnostic X-ray apparatus according to claim 7, it is characterized in that described current rectifying and wave filtering circuit is: the alternating current 220V supply voltage is through C 1, L 1, C 2Filtering joins by diode D 1, D 2, D 5, D 6The rectification circuit rectification of forming is again through C 8, C 9After the filtering, offer charge power supply.
9, a kind of portable medical diagnostic X-ray apparatus according to claim 7, it is characterized in that described charge power supply circuit is: the alternating current 220V supply voltage, through joining behind the current rectifying and wave filtering circuit on the T1 transformator, the charging control signal of the output of described control section is through R 2→ D 4→ Q 2→ serial connection joins HIC 1On make HIC 1With the Switching Power Supply work that T1 forms, D through linking to each other with transformator T2 outfan 8→ D 11→ R 20→ F 2→ to about direct current 300V charge power supply of accumulator cell assembly output, D through linking to each other with transformator T2 outfan 10→ C 21→ IC 1→ C 22Connect direct current 15V power supply of back output, offer the working power of charging panel integrated circuit;
The feedback control signal of coming from accumulator cell assembly sampling is through R 38→ D 7→ R 16C 14→ D 3→ R 14, R 15, C 13Join HIC 1On, adjust the size of its charging output voltage and electric current.
10, a kind of portable medical diagnostic X-ray apparatus according to claim 7, it is characterized in that described working power control circuit is: the accumulator cell assembly out-put supply is through R 20→ D 28After join T 2On the transformator, the working signal of control section output is through R3 → D19 → Q3 → join HIC 2On, make HIC 2With T 2The Switching Power Supply work of forming; D through linking to each other with transformator T2 outfan 24, C 42Output+24V voltage behind the rectifier filter, warp and C 42The R that links to each other 60Dividing potential drop C 49, I C1, C 51Voltage regulation filtering output+15V voltage, the diode D through linking to each other with transformator T2 outfan 26, C 50, I C4, C 52Output-15V voltage after the rectifying and wave-filtering voltage stabilizing, this+24V ,+15V ,-the 15V supply voltage offers the required running voltage of frequency conversion part; In addition, the D through linking to each other with transformator T2 outfan 25, C 55, R 61Rectifying and wave-filtering+the 12V supply voltage, by the control signal of control section output through R 4→ D 23→ R 62→ Q 1Output to beam-defining clipper, light beam-defining clipper light, expose and take the photograph the preceding position adjustment of sheet, simultaneously ,+24V voltage is through R 65, C 53→ R 67, R 68→ D 22→ R 55, C 39→ D 18→ R 53, R 54, C 38Serial connection joins HIC 2On, control the stable of its output voltage.
11, a kind of portable medical diagnostic X-ray apparatus according to claim 7 is characterized in that described feedback control circuit is: described charge power supply is to the R of charging voltage through being connected in series of accumulator cell assembly 21, R 22, R 23, R 24After the dividing potential drop, by I C2D→ R 31→ D 17→ D 7The control charging voltage is adjusted VR 2Can adjust the charging voltage size; By R 25R 26→ I C2A→ R 30→ D 16→ D 7The control charging current is adjusted variable resistance VR 1Can adjust the charging current size; After being charged to certain voltage, charging current diminishes through I C2A→ I C2B→ R 41Output control signals to control section, the control section output signal stops charging;
Wherein, with described R 23TM1 in parallel is a thermistor (temperature) sensor, and the accumulator cell assembly battery temperature of measurement is crossed high pressure, and its resistance reduces, through I C2D→ I C2C→ R 42Offer control section, make the control section output signal stop charging;
When normal exposure was taken the photograph the sheet duty, the voltage of accumulator cell assembly output was through F 2→ R 20→ R 21, R 22, R 23, R 24Voltage after partial is by I C2D→ I C2C→ R 42Offer control section, when the accumulator cell assembly brownout, control section receives signal, and output voltage is crossed low index signal, cuts off the exposing operation circuit simultaneously.
12, a kind of portable medical diagnostic X-ray apparatus according to claim 1, it is characterized in that described high pressure take place part mainly by high frequency transformation, multiplication of voltage boost, filament transformation, KV feedback, mA feedback form; Wherein, the high-frequency inversion voltage that described frequency conversion is partly exported joins the multiplication of voltage booster circuit after the high frequency transformation, after being raised to certain voltage, join on the bulb, make it produce X ray, the high-frequency inversion filament voltage that described frequency conversion is partly exported, after the filament transformation, join on the filament of bulb, light filament, produce the mA amount of X ray, multiplication of voltage is boosted voltage partly after KV mA feedback simultaneously, offers the frequency conversion part, controls the output of its KV amount and mA amount.
13, a kind of portable medical diagnostic X-ray apparatus according to claim 12, it is characterized in that described high pressure generating unit parallel circuit is: high frequency inverter is partly exported in described frequency conversion, after transformator T1 boosts, by capacitor C 1～C 64And diode D 1～D 32The multiplication of voltage booster circuit produces high pressure, is added on the anode of bulb and the negative electrode and produces X ray; Filament inverter voltage by frequency conversion is partly exported after T2 transformator transformation, is added on the filament of X ray bulb, produces the mA amount; Simultaneously, the feedback voltage by diode D17 and capacitor C 33 C34 form feeds back to the frequency conversion part through V2, control mA amount; By R1, R2, C1, C2, the feedback voltage that C65, C66 form feeds back to the KV amount that its generation is partly controlled in frequency conversion through V1.
14, a kind of portable medical diagnostic X-ray apparatus according to claim 1 should be able to balance, reliable when the balanced structure that it is characterized in that the balance transverse arm (3) of the integrated bulb head of described support is located the bulb focus in liftoff 2050mm-562mm vertical range; Described balanced structure adopts the parking brake braking again except adopting air spring (4) support.15, a kind of portable medical diagnostic X-ray apparatus according to claim 1, it is characterized in that described X-ray production apparatus adopts the two-way brake gear, on two BOGEY WHEELs, independently brake gear is installed respectively, should guarantee that the complete machine brake drag is not less than 98N, the acquisition of 98N brake drag data, the rigidity that can regulate tripping spring (10) realizes.
CNB031414893A 2003-07-09 2003-07-09 Mobile diagnostic X-ray apparatus for medical purpose Expired - Fee Related CN100366222C (en)

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CN110168407A (en) * 2016-08-11 2019-08-23 棱镜传感器公司 In the X-ray detector with low dosage efficiency of peripheral part
CN108599288A (en) * 2018-03-23 2018-09-28 苏州博思得电气有限公司 Power supply unit, power supply system for powering to high-tension apparatus and high-tension apparatus
CN109173074A (en) * 2018-09-14 2019-01-11 孙杰 A kind of thorough orthopaedics ultraviolet sterilizer of sterilization
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CN110074808A (en) * 2019-04-30 2019-08-02 上海医乐信息科技有限公司 New energy high pressure generator and new energy computer tomography equipment
CN116602702A (en) * 2023-06-05 2023-08-18 珠海西格医疗设备有限公司 Dental X-ray machine based on high-frequency direct-current constant-voltage control
CN116602702B (en) * 2023-06-05 2023-11-17 珠海西格医疗设备有限公司 Dental X-ray machine based on high-frequency direct-current constant-voltage control

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