CN2566579Y - Portable high frequency diagnostic x-ray machine for field operations - Google Patents

Abstract

The utility model relates to a portable high-frequency diagnostic x-ray machine for field operation, which is characterized in that the utility model is mainly composed of a high-frequency inverter circuit, a direct current high voltage generation circuit module, an exposure control circuit module, an inverter protection and working parameter closed-loop automatic control circuit module and a working parameter and status display module. Because of synthetically using the technology of high-frequency inversion digital closed-loop automatic control, etc., by the x-ray machine, the utility model has the advantages of small volume of the whole machine, light weight, flexible operation and use, low failure rate, precise and stable working parameter of an X-ray pipe, big effective output, high imaging quality and less harmful scattering of rays; thus, the utility model is especially suitable for the field operation or other automotive conditions.

Description

Field operations portable high frequency diagnostic X-ray unit

Technical field

The utility model relates to a kind of diagnostic X-ray unit, particularly a kind of field operations portable high frequency diagnostic X-ray unit.

Background technology

Field operations X line machine be under the operation condition in the open air to the sick and wounded carry out fast, efficiently, medical diagnosis and then the indispensable important instrument equipment of technical guarantee is provided for its treatment accurately, and function is complete, performance is good, volume is little, in light weight, easy and simple to handle, field operations portable high frequency X line machine that reliability is high, and is essential especially concerning diligent department is defended in the battlefield.

Yet the field operations X line machine equipped of my army all is " power frequency X line machine " basically up to now, that is to say, the AC power operating frequency that its produces high pressure is 50/60 hertz (Hz).Because the high voltage supply of this class X line machine substantially all is the autotransformer by the iron core formula, circuit that is adopted and control mode are all more outmoded, the Design of Mechanical Structure of complete machine also incompatibility field operations needs, thereby there is a following defective: 1) equipment heaviness, bulky, do in the open air not only to transport wartime, carry, set up at the scene and remove and receive difficulty, and operation is also inconvenient, fault rate height, system reliability is poor; 2) the running parameter shakiness of X spool, time for exposure are forbidden, thereby image quality is poor, and influence is carried out correct diagnosis to noneffectives; 3) electrical source consumption power is big, and effective output is low, not only be unsuitable for inspection is shone in the throwing at the thicker positions of health such as lumbar vertebrae, pelvis, and ray scattering is big, and soft ray is many, and is bigger to the wounded and medical worker's actual bodily harm.

In order to overcome the above-mentioned defective of " power frequency X line machine ", just must solve following technical problem: 1) manage to remove iron core formula autotransformer huge and heavy in the existing device; 2) comprehensively adopt digital technology and modern control technology, to improve the precision and the stability of X spool real work parameter (as X spool tube voltage, tube current, filament voltage etc.); 3) improve with the design to instrument of the design philosophy of people's one machine engineering, it is wider to make it range of application.

Summary of the invention

At the problem of above-mentioned existence, the purpose of this utility model provides that a kind of function is complete, performance good, volume is little, in light weight, easy and simple to handle, field operations portable high frequency diagnostic X-ray unit that reliability is high.

For achieving the above object, the utility model is by the following technical solutions: a kind of field operations portable high frequency diagnostic X-ray unit, it is characterized in that: it is mainly by high-frequency inverter circuit and dc high voltage generation circuit module, the exposure control circuit module, inverter protection and running parameter closed loop automatic control circuit module, running parameter and state display module are formed;

Described high-frequency inverter circuit and dc high voltage generation circuit module comprise that mainly dc high voltage generation circuit chain, high-frequency lamp filament voltage produce circuit;

Described dc high voltage generation circuit chain mainly comprises bi-directional thyristor switch circuit, diode bridge rectifier circuit, controlled triode group direct voltage adjustment circuit, switch power source output voltage (V) electric current (I) power sample circuit, independent-excited high frequency bridge-type inverter, high-frequency impulse coupling transformer, voltage doubling rectifing circuit, X spool real work high pressure (EP) tube current (IP) sample circuit that cascade is successively joined; Described controlled triode group direct voltage is adjusted the excitation end and the output thereof of circuit, independent-excited high frequency bridge-type inverter, respectively with high-frequency impulse coupling transformer Tr1, the corresponding end of Tr2, Tr3 is joined, the output of Tr3 and the coupling of the input of voltage doubling rectifing circuit are joined, and the anode of its output and X spool joins;

Described high-frequency lamp filament voltage produces circuit and comprises state gating circuit, controlled pulse accent wide (PWM) oscillator that cascade is successively joined and recommend power output circuit, the output termination high-frequency impulse coupling transformer Tr4's of this circuit is elementary, and the secondary and filament X spool of Tr4 joins;

Described exposure control circuit module comprises that mainly high-frequency inversion triggering/control impuls produces circuit unit, exposure time control circuit, and exposure control rim brake and interface circuit thereof, light reducing device delay control circuit; Described high-frequency inversion triggering/control impuls produces circuit unit, mainly by Digital Logic combined treatment circuit, the bi-directional thyristor switch control signal generation branch road, inverter power output closed-loop control pulse generation branch road, the complementary work of the bridge-type high-frequency inverter control impuls that are connected in thereafter produce branch road and form; Described bi-directional thyristor switch control signal produces branch road, the state gating circuit, the emitter follower that comprise mutual cascade, the output of the input of this branch road and described exposure control rim brake and interface circuit joins, and the control end of its output and described bi-directional thyristor switch circuit joins; Described inverter power output closed-loop control pulse produces branch road, the state gating circuit, comparison and pulse width modulated (the COM ﹠amp that are joined by cascade successively; PWM) circuit and transistor complementary output circuit are formed, and the elementary of its output signal and Tr1 joined; The complementary work of described bridge-type high-frequency inverter control impuls produces branch road, is made up of state gating circuit, controlled pulse oscillating circuit and transistor complementary output circuit that cascade is successively joined, and the complementary signal that this branch road is exported is received the elementary of Tr2; Described exposure time control circuit, the state control signal that comprises mutual cascade is selected circuit, controlled pulse generator, can be preset subtract counter, nought state detecting gate and exposure control signal produce circuit, and its output joins with the Digital Logic combined treatment circuit of described high-frequency inversion triggering/control impuls generation circuit unit;

Described inverter protection and running parameter closed loop automatic control circuit module comprise that mainly kV/IP closed loop automatic control signal produces circuit and inverter protective circuit; Described kV/IP closed loop automatic control signal produces circuit, and the composition structure that produces branch road with the described inverter power output of claim 5 closed-loop control pulse is identical; Described inverter protective circuit, comprise that fault-signal produces circuit, safety protection control executive circuit, it is made up of overvoltage/overcurrent comparator, diode OR gate, the light activated power thyristor fault-signal generation circuit of cascade successively, the sample circuit output of the described V of its input and claim 3, I, IP parameter joins, and the control end of the state gating circuit in the described exposure control circuit module of the output of this circuit and claim 5 joins;

Described running parameter and state display module comprise that mainly X spool preset high pressure, time data form circuit unit, and analog references high pressure (kV-Ref) produces circuit, decoder driver circuit and display and control panel; Described X spool preset high pressure, time data form circuit unit, comprise the key switch battle array and be connected to thereafter logic conversion circuit, be connected to after the described logic conversion circuit, by the controlled pulse oscillator of cascade successively, can preset kV, the S data that forward-backward counter and state thereof select decoder to form and forms branch road, and be connected to kV, the S data form branch road data synthesis circuit afterwards; The output of described data synthesis circuit connects decoder driver circuit and display and control panel, the kV-Ref voltage that the data of described kV data formation branch road are produced after logical transition and D/A processing of circuit is received described kV/IP closed loop automatic control signal and is produced input of circuit;

Described decoder driver circuit and display and control panel comprise decoder driver circuit and display floater; Equipment work K switch, work and malfunction indicator lamp, the digital LED array of high brightness, key switch battle array are installed on described display floater; Described decoder driver circuit mainly comprises seven sections decoding drive integrated circult (4547XN) arrays, current-limiting resistance row (NX7), current-limiting resistance row and digital LED corresponding joining of array of the high brightness on the display floater;

The utility model is owing to take above technical scheme, thereby have following characteristics: 1) the utility model is owing to produce high pressure with technology such as " high-frequency inverter ", " voltage multiplying rectifiers ", replace traditional " using heavy autotransformer etc. " power supply and produced this pattern of high pressure, house transformer all is a high-frequency pulse transformer, used circuit element is based on digital integrated circuit, thereby volume is little, in light weight, set up to remove and accommodate easily, transhipment, easy to carry, the reliability height, environmental suitability is strong, so be specially adapted under the condition of Field Operational; 2) the utility model is owing to adopted digital closed loop automatic control technology, guaranteed the accurate and stable of X spool running parameter (kV, mA, filament voltage etc.) and time for exposure, this has just guaranteed that its effective output is big, image quality is high, satisfy substantially under the field condition to the sick and wounded carry out fast, efficiently, medical diagnosis and then the needs of technical guarantee are provided for its treatment accurately; 3) the utility model is owing to be added in the approximate direct current of the high pressure at X spool two ends, filament voltage also is operated in high frequency, thereby the output active ingredient that has guaranteed the X spool is big, the monochromatization degree is strong, harmful radiation is low, thereby the sick and wounded and medical personnel's skin radioactive dose is greatly reduced, help protection to them; 4) the utility model will be owing to will make up head and be fixed in the middle of the casing in design, and four circuit boards are distributed in top and the sidepiece that makes up head, open casing after, each part can both be exposed outside, and is convenient to C﹠M especially.Because the utility model has above these characteristics, thereby it can be widely used in: 1. under field condition, provide the X radiodiagnosis x image of high-quality high definition to foreign matter in the injured wounded's human body, the body, and then accurately diagnose its state of an illness, take correct Disposal Measures that foundation is provided for the doctor; 2. in general hospital,,, provide film image clearly, be convenient to the doctor and correctly diagnose the state of an illness Xiang the doctor as portable bedside camera installation with existing small-power power power supply in the ward; 3. be used as the auxiliary equipment of operative treatment.This utility model also can cooperate with image intensifier television system, the wound foreign matter is accurately located, thereby can be some operation condition is provided; Also can avoid the condition of the injury to enlarge to handling in advance such as wounds such as fracture.

Description of drawings

Fig. 1 is a composition overall block-diagram of the present utility model

Fig. 2 is the composition block diagram of high-frequency inverter circuit of the present utility model and dc high voltage generation circuit module M1

Fig. 3 is the theory of constitution block diagram of exposure control circuit module M2 of the present utility model

Fig. 4 is the theory of constitution block diagram of protection of the utility model inverter and running parameter closed loop automatic control circuit module M3

Fig. 5 is the theory of constitution block diagram of the utility model running parameter and state display module M4

Embodiment

As shown in Figure 1; a kind of field operations portable high frequency diagnostic X-ray unit, it mainly comprises high-frequency inverter circuit and dc high voltage generation circuit module M1, exposure control circuit module M2; inverter protection and running parameter closed loop automatic control circuit module M3, running parameter and state display module M4 etc.The effect of M1 is under the control of M2, provides high stable, high-precision operating voltage for the X spool in real time; The effect of M2 is that the exposure process of complete machine is controlled; The effect of M3 is the tube voltage of X spool (kV), tube current (mA) to be carried out closed loop adjust automatically, guaranteeing the high imaging quality of X line machine, and the work safety of X spool is protected; The effect of M4 is that the running parameter setting of X line machine and the operating state of instrument etc. are monitored, for correct use equipment provides foundation.

As shown in Figure 2, high-frequency inverter circuit and dc high voltage generation circuit module M1 comprise that mainly dc high voltage generation circuit chain M11, high-frequency lamp filament voltage produce circuit M12.M11 mainly comprises bi-directional thyristor switch circuit M111, diode bridge rectifier circuit M112, controlled triode group direct voltage adjustment circuit M113, Switching Power Supply power output sampling (Vcp, Icp) circuit M114, independent-excited high frequency bridge-type inverter M115, the voltage doubling rectifing circuit M116 that cascade is successively joined, and the sample circuit M117 of X spool real work parameter (EP, IP); Controlled termination at described M113 has transformer Tr1, swashs end in its of described M115 and output is connected to transformer Tr2 and Tr3 respectively, the secondary input that meets M116 of Tr3, and its output connects the anode of X spool; The elementary of elementary, the Tr2 of the input control end of described M111, Tr1 joined (as follows) with the corresponding output that the high-frequency inversion triggering/control impuls of described exposure control circuit module M2 produces circuit unit M22 respectively.Described M12 comprises that the state gating circuit M121, the controlled pulse that are joined by cascade are successively transferred wide (PWM) oscillator M122, recommended power output circuit M123, transformer Tr4 forms, and secondary (output) of Tr4 and the filament of X spool join.

It is to be noted: described Tr1, Tr2, Tr3, Tr4 use the high-frequency impulse of design processing voluntarily to become village device, what need when considering the work of X spool again is the DC power supply of high voltage, little electric current, so high-voltage rectifier has adopted voltage doubling rectifing circuit, make the number of turn of high-tension transformer secondary winding further reduce; This not only helps solving the problem in transformer layer insulation and the manufacturing, particularly importantly both improved the performance of equipment, again for many years in X line machine " remove heavy iron core formula autotransformer ", little, in light weight in the hope of equipment volume, be convenient to field operations and carry the imagination of transportation and become reality.

As shown in Figure 3, exposure control rim brake and interface circuit M21, high-frequency inversion triggering/control impuls generation circuit unit M22 that exposure control circuit module M2 is mainly joined by front and back, exposure time control circuit M23, and light reducing device delay control circuit M24 forms; Described M22 is mainly by " Digital Logic combined treatment circuit " M221, bi-directional thyristor switch control signal generation branch road M2211, the inverter power output closed-loop control pulse generation branch road M2212, the complementary work of the bridge-type high-frequency inverter control impuls generation branch road M2213 that are connected in thereafter form, and the input of M221 and the output of M21 are joined; Described M2211 is made up of gating circuit M22111, the emitter follower M22112 of mutual cascade, the output of the input termination M221 of M22111, and the output of M22112 connects the control end of M111; State gating circuit M22121, comparison and pulse width modulated (COM ﹠amp that described M2212 is joined by cascade successively; PWM) circuit M22122 and transistor complementary output circuit M22123 form, and the output signal of M22123 connects high-frequency pulse transformer Tr1 elementary of " being of coupled connections with M113 "; State gating circuit M22131, controlled pulse oscillating circuit M22132 and two transistor complementary output circuit M22133A, M22133B that described M2213 is joined by cascade successively form, and the complementary pulse signal (T2, T3) of M22133A, M22133B output connects high-frequency pulse transformer Tr2 elementary of " being of coupled connections with M115 ".Described M23 comprises that the state control signal of mutual cascade selects circuit M231, controlled pulse generator M232, can preset subtract counter M233, nought state detecting gate M234 and exposure control signal produces circuit M235, and the output of M235 meets gating circuit M2211 1, M22121, the M22131 that belongs to M22; The light reducing device that described M24 is used is chosen homemade small-sized light reducing device.

As mentioned above, exposure control circuit module M2 mainly finishes: 1. high-frequency inversion triggering/control impuls produces; 2. the time for exposure is controlled; The effect of high-frequency inverter circuit and dc high voltage generation circuit module M1 is under the control of M2, provides high stable, high-precision operating voltage for the X spool in real time.

In detail, M1, M2 is work like this: when exposure control circuit sends " exposure is prepared " instruction (rim brake first retaining that promptly exposes is pressed), the Ready control signal of M21 becomes low level in the exposure control circuit module, cause the Preheat on signal in " Digital Logic combined treatment circuit M221 " to uprise, the input of M22111 is an electronegative potential, gating circuit M121 is started to control, the M122 starting oscillation, M123 has high-frequency impulse output, through high-frequency pulse transformer Tr4 filament voltage is added to the filament two ends of X spool then, filament is initially located in preheat mode, but does not produce SSR this moment, T1, the T2/T3 signal; When rim brake second retaining is pressed, exposure commencing signal X-Ray step-down, Preheat on still keeps high potential, X spool filament continues heating, but this moment, the input of M22111 became high potential, high-frequency inversion triggering/control impuls produces the M2211 in the circuit unit, M2212, M2213 just controls automatically respectively and produces high level SSR signal, width is with kV-Ref, the T1 pulse signal that the difference of EP changes, the complementary excited oscillation signal T2/T3 of high frequency bridge-type inverter, and SSR is added to M111, T1 (by the Tr1 coupling) is added to M113, T2/T3 (by the Tr2 coupling) is added to M115, send M116 voltage multiplying rectifier by Tr3 with the high frequency voltage (middle pressure) that high-frequency inverter produced then, finally produce the required high direct voltage (kV) of X spool work, X line machine is exposed, and exposure time control circuit M23 begins counting simultaneously.(counted the N number when presetting subtract counter M233 counting when finishing, be equivalent to timing t=NT), nought state detecting gate M234 has output and then exposure control signal generation circuit M235 that gating circuit M22111, M22121, the M22131 of M22 are closed, high-frequency inversion triggering/control impuls produces the work of M2211, M2212 in the circuit, M2213 generation SSR, T1, T2/T3 and ends (promptly stopping exposure) immediately, (Warm up waiting period that from then on equipment entering, the length of this time is pressed the index request setting), prepare to meet exposure next time.Be the control waveform schematic diagram of equipment exposure below.

Because determined by the HT waveform rising edge the actual opportunity that begins to expose, and the HT waveform rising edge of High-frequency machine is very steep just, add the employing digital technology, thereby can be controlled at the time for exposure in the very short scope, this has also just guaranteed the high-quality of imaging, does not also accomplish in any case this is the power frequency machine.

As shown in Figure 4; inverter protection and running parameter closed loop automatic control circuit module M3 comprise that mainly kV/IP closed loop automatic control signal produces circuit M31 (shared with the high-frequency inversion triggering/control impuls generation circuit unit M22 in the exposure control circuit), inverter protective circuit M32.The state gating circuit M311 (being M22121) that described M31 is joined by cascade successively, relatively and pulse width modulated (COM ﹠amp; PWM) circuit M312 (being M22122) and transistor complementary output circuit M313 (being M22123) form, from EP, the IP of M117 with from the kV-Ref of M422, receive the comparison input that is positioned at M22122 (being M312) among the M2212 respectively, the output signal of M313 (being M22123) connects high-frequency pulse transformer Tr1 elementary of " being of coupled connections with M113 "; M31 is work like this: when the X-Ray step-down, state gating circuit M311 (being M22121) opens the door, the comparator part of M312 (being M22122) just compares the size of kV-Ref, EP, and by the pulse duration of comparative result control PWM output, be added to the elementary of Tr1 by M313 (being M22123) then, operating state (by the negative feedback rule) to inverter is dynamically adjusted, and the high direct voltage kV that finally makes M116 output is very near its set point, finishing the closed loop of kV controls automatically, make that kV output is stable, good reproducibility, control precision are very high.Because kV fluctuation is very little, near desirable direct current, and this has just guaranteed that X line machine effective output is big, and the harmful scattering of ray is few, thereby the image quality height, and also very little to the human body infringement.Described inverter guard signal produces circuit M32, comprise fault (Error) signal generating circuit M321, safety protection control executive circuit M322, described M321 is made up of overvoltage/overcurrent comparator M3211, diode OR gate M3212, the light activated power thyristor M3213 of cascade successively, and described M322 is then served as by the M22 among the exposure control circuit module M2; From Vcp, the Icp of M114, M117, the input that the IP signal is added to M3211 respectively, the output of M3213 (Error) is corresponding with M22 joins; When fault (be Vcp, Icp, IP overshoot value and become OVP, OCP), fault (Error) signal of M3213 output becomes low level; The Error step-down makes M22 not produce triggering/control impuls SSR, T1, T2/T3 on the one hand, and then inverter is quit work automatically, lights the malfunction indicator lamp LD43 that is arranged in M4 on the other hand, tells operating personnel to handle accordingly.

As shown in Figure 5, running parameter and state display module M4 comprise that mainly high pressure, time data form circuit unit M41, and analog references high pressure (kV-Ref) produces circuit M42, decoder driver circuit and display and control panel M43; Described M41 comprises key switch battle array M411, be connected to the logic conversion circuit M412 behind the M411 and be attempted by kV data after the M412 forms branch road M4121 and S data and forms branch road M4122 and be connected to data combinator circuit M413 after M4121, the M4122; Described M4121 is made up of " the controlled pulse oscillator M41211, can preset forward-backward counter M41212 and state decoding selector M41213 thereof " of cascade successively, described M4122 is made up of " the controlled pulse oscillator M41221, can preset forward-backward counter M41222 and state decoding selector M41223 thereof " of cascade successively, by kV, the S data that two branch road M4121, M4122 produce, in M413, finish data synthetic (these data will as producing high pressure (kV), determining the foundation of time for exposure (S)); Described decoder driver circuit and display and control panel M43 comprise decoder driver circuit M431, display floater M432; Equipment work K switch, work and malfunction indicator lamp LW and LE, key switch battle array M4321, high-brightness LED charactron array M4322 are installed on M432; Decoding drive integrated circult (4547XN) the array M4311 that joins before and after described M431 mainly comprises, current-limiting resistance row (NX7) M4312; Described M42 (is the logical transition circuit, or title D/A) optoelectronic switch array M421, the voltage ratio variable resistor voltage divider M422 by the front and back cascade forms, the output of M413 (kV data) is joined with the input of M421, the output of M422 will be as the foundation that produces X spool working voltage (kV), and this has also just produced the kV-Ref signal; The dateout of M413 also will be joined with the input of M4311, the output of M4312 and corresponding joining of M4322 on being positioned at M43, and the number of finishing data are set shows.

In conjunction with " content of invention " and the specific embodiment given, we have described composition of the present utility model, operation principle, required key technology and the method for realization in detail.As can be seen, described X line machine not only has " volume is little, in light weight, be convenient to that field operations are carried transportation, manipulated flexibly, failure rate is low, running parameter is smart, good imaging quality, effective output is big, ray scattering is few characteristics; can satisfy the needs to the clear photography of sick and wounded's different parts really ", but also it is minimum to make patient and doctor be subjected to harmful exposure dose, thereby a kind of New X line machine that broad prospect of application is arranged of can yet be regarded as.

Claims (8)

1, a kind of field operations portable high frequency diagnostic X-ray unit, it is characterized in that: it is mainly by high-frequency inverter circuit and dc high voltage generation circuit module, the exposure control circuit module, inverter protection and running parameter closed loop automatic control circuit module, running parameter and state display module are formed;

2, field operations portable high frequency diagnostic X-ray unit as claimed in claim 1 is characterized in that: described high-frequency inverter circuit and dc high voltage generation circuit module comprise that mainly dc high voltage generation circuit chain, high-frequency lamp filament voltage produce circuit;

3, field operations portable high frequency diagnostic X-ray unit as claimed in claim 1 or 2, it is characterized in that: described dc high voltage generation circuit chain mainly comprises bi-directional thyristor switch circuit, diode bridge rectifier circuit, controlled triode group direct voltage adjustment circuit, switch power source output voltage (V) electric current (I) power sample circuit, independent-excited high frequency bridge-type inverter, high-frequency impulse coupling transformer, voltage doubling rectifing circuit, X spool real work high pressure (EP) tube current (IP) sample circuit that cascade is successively joined; Described controlled triode group direct voltage is adjusted the excitation end and the output thereof of circuit, independent-excited high frequency bridge-type inverter, respectively with high-frequency impulse coupling transformer Tr1, the corresponding end of Tr2, Tr3 is joined, the output of Tr3 and the coupling of the input of voltage doubling rectifing circuit are joined, and the anode of its output and X spool joins;

4, field operations portable high frequency diagnostic X-ray unit as claimed in claim 1 or 2, it is characterized in that: described high-frequency lamp filament voltage produces circuit and comprises state gating circuit, controlled pulse accent wide (PWM) oscillator that cascade is successively joined and recommend power output circuit, the output termination high-frequency impulse coupling transformer Tr4's of this circuit is elementary, and the secondary and filament X spool of Tr4 joins;

5, field operations portable high frequency diagnostic X-ray unit as claimed in claim 1, it is characterized in that: described exposure control circuit module, comprise that mainly high-frequency inversion triggering/control impuls produces circuit unit, exposure time control circuit, and exposure control rim brake and interface circuit thereof, light reducing device delay control circuit; Described high-frequency inversion triggering/control impuls produces circuit unit, mainly by Digital Logic combined treatment circuit, the bi-directional thyristor switch control signal generation branch road, inverter power output closed-loop control pulse generation branch road, the complementary work of the bridge-type high-frequency inverter control impuls that are connected in thereafter produce branch road and form; Described bi-directional thyristor switch control signal produces branch road, the state gating circuit, the emitter follower that comprise mutual cascade, the output of the input of this branch road and described exposure control rim brake and interface circuit joins, and the control end of its output and described bi-directional thyristor switch circuit joins; Described inverter power output closed-loop control pulse produces branch road, the state gating circuit, comparison and pulse width modulated (the COM ﹠amp that are joined by cascade successively; PWM) circuit and transistor complementary output circuit are formed, and the elementary of its output signal and Tr1 joined; The complementary work of described bridge-type high-frequency inverter control impuls produces branch road, is made up of state gating circuit, controlled pulse oscillating circuit and transistor complementary output circuit that cascade is successively joined, and the complementary signal that this branch road is exported is received the elementary of Tr2; Described exposure time control circuit; The state control signal that comprises mutual cascade is selected circuit, controlled pulse generator, can be preset subtract counter, nought state detecting gate and exposure control signal produce circuit, and its output joins with the Digital Logic combined treatment circuit of described high-frequency inversion triggering/control impuls generation circuit unit.

6, field operations portable high frequency diagnostic X-ray unit as claimed in claim 1 is characterized in that: described inverter protection and running parameter closed loop automatic control circuit module comprise that mainly kV/IP closed loop automatic control signal produces circuit and inverter protective circuit; Described kV/IP closed loop automatic control signal produces circuit, and the composition structure that produces branch road with the described inverter power output of claim 5 closed-loop control pulse is identical; Described inverter protective circuit; comprise that fault-signal produces circuit, safety protection control executive circuit; it is made up of overvoltage/overcurrent comparator, diode OR gate, the light activated power thyristor fault-signal generation circuit of cascade successively; the sample circuit output of the described V of its input and claim 3, I, IP parameter joins, and the control end of the state gating circuit in the described exposure control circuit module of the output of this circuit and claim 5 joins.

7, field operations portable high frequency diagnostic X-ray unit as claimed in claim 1, it is characterized in that: described running parameter and state display module, comprise that mainly X spool preset high pressure, time data form circuit unit, analog references high pressure (kV-Ref) produces circuit, decoder driver circuit and display and control panel; Described X spool preset high pressure, time data form circuit unit, comprise the key switch battle array and be connected to thereafter logic conversion circuit, be connected to after the described logic conversion circuit, by the controlled pulse oscillator of cascade successively, can preset kV, the S data that forward-backward counter and state thereof select decoder to form and forms branch road, and be connected to kV, the S data form branch road data synthesis circuit afterwards; The output of described data synthesis circuit connects decoder driver circuit and display and control panel, the kV-Ref voltage that the data of described kV data formation branch road are produced after logical transition and D/A processing of circuit is received described kV/IP closed loop automatic control signal and is produced input of circuit.

8, as claim 1 or 7 described field operations portable high frequency diagnostic X-ray units, it is characterized in that: described decoder driver circuit and display and control panel comprise decoder driver circuit and display floater; Equipment work K switch, work and malfunction indicator lamp, the digital LED array of high brightness, key switch battle array are installed on described display floater; Described decoder driver circuit mainly comprises seven sections decoding drive integrated circult (4547XN) arrays, current-limiting resistance row (NX7), current-limiting resistance row and digital LED corresponding joining of array of the high brightness on the display floater.

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