CN205333878U - X ray source control case and X ray source device - Google Patents
X ray source control case and X ray source device Download PDFInfo
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- CN205333878U CN205333878U CN201521127128.0U CN201521127128U CN205333878U CN 205333878 U CN205333878 U CN 205333878U CN 201521127128 U CN201521127128 U CN 201521127128U CN 205333878 U CN205333878 U CN 205333878U
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Abstract
The utility model relates to a X ray source control case and X ray source device, including the shell, the shell is inside to be provided with main control unit, power switching circuit, first radiator and front panel, and power switching circuit, radiator and front panel all are connected with main control unit, main control unit is including integrated high -pressure voltage control circuit and filament current control circuit on the circuit board. The utility model relates to a X ray source control case and a X ray source device, simple structure, and the fault rate is less.
Description
Technical field
This utility model relates to controlling device field, is specifically related to a kind of x-ray source control chamber and x-ray source device。
Background technology
X-ray apparatus, as the core component of channel-type screening machine, is widely used in airport, railway station, subway station, the place that the important personnel such as stadiums are more。X-ray apparatus, as a kind of electronic product, is made up of controller and ray generator two parts。Existing controller is internal adopts heavy transformator and 4 pieces of insertion slot type panels (filament sheet, hardboard and 2 pieces of power amplifier boards), and this complicated structure fault rate is higher。
Utility model content
This utility model provides a kind of x-ray source control chamber and a kind of x-ray source device, simple in construction, and fault rate is less。
The technical scheme that this utility model solves above-mentioned technical problem is as follows: a kind of x-ray source control chamber, including shell, described enclosure is provided with master controller, power-switching circuit, the first radiator and front panel, and described power-switching circuit, described radiator and described front panel are all connected with described master controller；
Described master controller includes integrated high tension voltage control circuit on circuit boards and filament current control circuit。
The beneficial effects of the utility model are: replace traditional insertion slot type panel by master controller, control chamber volume can be reduced, and+220V voltage can be converted to+48V voltage by power-switching circuit and be supplied to master board, make control chamber required voltage reduce to some extent compared to traditional approach。
On the basis of technique scheme, this utility model can also do following improvement:
Described high tension voltage control circuit includes voltage signal processing circuit, voltage pwm circuit, voltage push-pull circuit, major loop cross stream comparison circuit and overvoltage comparison circuit, described voltage signal processing circuit, receive the voltage feedback signal that x ray generator produces, and voltage feedback signal is generated no-load voltage ratio voltage signal according to special ratios；Described voltage signal processing circuit is connected with described overvoltage comparison circuit and described voltage pwm circuit；Described overvoltage comparison circuit is also connected with described voltage pwm circuit；Described voltage pwm circuit is also connected with described voltage push-pull circuit and described major loop current foldback circuit, and described voltage push-pull circuit is connected with described major loop current foldback circuit；Described major loop current foldback circuit is connected with the high-tension transformer of x ray generator。
Further, described filament current control circuit includes current signal process circuit, electric current pwm circuit, electric current push-pull circuit, crosses stream comparison circuit and heat stream stream change-over circuit；
Described current signal processes circuit, receives the current feedback signal that x ray generator produces, and according to special ratios, current feedback signal is changed into voltage signal；Described current signal process circuit crosses stream comparison circuit with described and described electric current pwm circuit is connected, described electric current pwm circuit is also connected with described electric current push-pull circuit and described heat stream stream change-over circuit, and described electric current push-pull circuit is connected with the filament transformer of x ray generator；
Wherein, described stream comparison circuit of crossing also is connected with described voltage pwm circuit, and described heat stream stream change-over circuit is also connected with described voltage signal processing circuit。
Above-mentioned further scheme is adopted to provide the benefit that: by high tension voltage control circuit and filament current control circuit, the function of traditional filament sheet, hardboard and two pieces of power amplifier boards being integrated on one piece of panel, reduce volume, simple in construction。
Further, also include the second radiator, be installed on described voltage push-pull circuit and described electric current push-pull circuit position。
Above-mentioned further scheme is adopted to provide the benefit that: can push-pull circuit be dispelled the heat by radiator。
Further, described master controller being also integrated with the first socket, described first socket is connected with described high tension voltage control circuit and filament current control circuit respectively, for front panel is connected to described master controller。
Further, described first radiator is fan, and described first radiator is arranged on around described master controller and dispels the heat for master controller。
Further, described master controller being also integrated with the second socket, described second socket is connected with described high tension voltage control circuit and filament current control circuit respectively。
Further, described master controller is also integrated with the 3rd socket and auxiliary power module, described 3rd socket is connected with auxiliary power module, is also connected with described power-switching circuit, and described 3rd socket provides for power-switching circuit and described auxiliary power module and connects interface。
Above-mentioned further scheme is adopted to provide the benefit that: the voltage after can conversion electric power module being changed by auxiliary power module is changed further, thus being supplied to the components and parts work that voltage is less。
Further, described front panel adopts analog interface or single-chip microcomputer。
Adopting above-mentioned further scheme to provide the benefit that: can with upper machine communication by single-chip microcomputer, user oneself arranges voltage x current value to be turned on and off ray；Or control being turned on and off of ray by analog interface, it is possible to adapt to different user's requests。
This utility model solves the another kind of solution of above-mentioned technical problem employing:
A kind of x-ray source device, including any of the above-described kind of x-ray source control chamber, also includes x-ray source, described shell is additionally provided with interface, and described x-ray source is connected by interface with described x-ray source control chamber。
Accompanying drawing explanation
Fig. 1 is the internal structure schematic diagram of a kind of x-ray source control chamber of this utility model；
Fig. 2 is the structural representation of master controller in this utility model；
Fig. 3 is the structural representation that this utility model mesohigh voltage control circuit is connected with filament current control circuit；
Fig. 4 is the structural representation of a kind of x-ray source device of this utility model；
Fig. 5 is the circuit structure diagram of master controller in this utility model；
Fig. 6 is the circuit structure diagram of auxiliary power module in this utility model。
1, shell, 11, master controller, 111, high tension voltage control circuit, 1111, voltage signal processing circuit, 1112, voltage pwm circuit, 1113, voltage push-pull circuit, 1114, major loop current foldback circuit, 1115, overvoltage comparison circuit, 112, filament current control circuit, 1121, current signal processes circuit, 1122, electric current pwm circuit, 1123, electric current push-pull circuit, 1124, cross stream comparison circuit, 1125, heat stream stream change-over circuit, 113, first socket, 114, second socket, 115, 3rd socket, 116, auxiliary power module, 12, power-switching circuit, 13, first radiator, 14, front panel, 2, interface。
Detailed description of the invention
Below in conjunction with accompanying drawing, principle of the present utility model and feature being described, example is served only for explaining this utility model, is not intended to limit scope of the present utility model。
As shown in Figure 1 and Figure 2, a kind of x-ray source control chamber, including shell 1, shell 1 is internally provided with master controller 11, power-switching circuit the 12, first radiator 13 and front panel 14, and power-switching circuit 12, radiator 13 and front panel 14 are all connected with master controller 11；First radiator 13 is fan；
External+220V the voltage of control chamber, is converted to+48V power supply through power-switching circuit 12 and is supplied to master controller, provides+48V voltage to the first radiator 13 simultaneously, and the first radiator 13 is arranged on around master controller 11 and dispels the heat for master controller 11。
As it is shown on figure 3, master controller 11 includes high tension voltage control circuit 111 and filament current control circuit 112。
High tension voltage control circuit 111 includes voltage signal processing circuit 1111, voltage pwm circuit 1112, voltage push-pull circuit 1113, major loop crosses stream comparison circuit 1114 and overvoltage comparison circuit 1115, voltage signal processing circuit 1111, it is connected to x ray generator through the second socket, receive the voltage feedback signal that x ray generator produces, and voltage feedback signal is generated no-load voltage ratio voltage signal according to special ratios, simultaneously, the no-load voltage ratio voltage signal generated is formed after isolation and dividing potential drop the voltage after dividing potential drop, user can obtain this magnitude of voltage according to corresponding means, specifically by other modes such as voltage detecting；Voltage signal processing circuit 1111 is connected with overvoltage comparison circuit 1115 and voltage pwm circuit 1112；Overvoltage comparison circuit 1115 is also connected with voltage pwm circuit 1112；Voltage pwm circuit 1112 is also connected with voltage push-pull circuit 1113 and major loop current foldback circuit 1114, and voltage push-pull circuit 1113 is connected with major loop current foldback circuit 1114；Major loop current foldback circuit 1114 is connected with the high-tension transformer of x ray generator, provides high pressure for X-ray tube two ends, and overvoltage comparison circuit provides overvoltage protection for it。
Filament current control circuit 112 includes current signal and processes circuit 1121, electric current pwm circuit 1122, electric current push-pull circuit 1123, crosses stream comparison circuit 1124 and heat stream stream change-over circuit 1125；Current signal processes circuit 1121, it is connected to x ray generator through the second socket, receive the current feedback signal that x ray generator produces, and current feedback signal is changed into voltage signal according to special ratios, simultaneously, through isolation and dividing potential drop, this voltage signal is formed voltage signal, and user can obtain this magnitude of voltage by corresponding means, specifically by other modes such as voltage detecting；Current signal processes circuit 1121 and is connected with stream comparison circuit 1124 and electric current pwm circuit 1122 excessively, electric current pwm circuit 1122 is also connected with electric current push-pull circuit 1123 and heat stream stream change-over circuit 1125, electric current push-pull circuit 1123 is connected with the filament transformer of x ray generator, and the filament for filament transformer provides voltage；Wherein, cross stream comparison circuit 1124 to be also connected with voltage pwm circuit 1112, it is provided that overcurrent protection；Heat stream stream change-over circuit 1125 is also connected with voltage signal processing circuit 1111。
Also include the second radiator, be installed on voltage push-pull circuit 1113 and electric current push-pull circuit 1123 position。Second radiator is to strengthen heat radiation, it is prevented that the panel of master controller 11 is overheated to be burnt out。
As shown in Figure 5, wherein, voltage signal processing circuit 1111, including resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R13, resistance R14, resistance R19, resistance R20, resistance R28, resistance R29, resistance R30, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, operational amplifier IC6A, operational amplifier IC2A, NPN type triode Q3, transition diode D1 and a light emitting diode D21；
Voltage feedback signal is through the in-phase input end of resistance R1 input to operational amplifier IC6A, the inverting input of operational amplifier IC6A is connected with one end of one end of resistance R28 and resistance R29 respectively, the wherein other end ground connection of resistance R28, another termination+12V voltage of resistance R29, operational amplifier IC6A is just, negative power end connects+12V voltage and ground connection respectively, the outfan of operational amplifier IC6A is connected with one end of one end of resistance R30 and resistance R14 respectively, another termination+12V voltage of resistance R30, the base stage of the other end connecting triode Q3 of resistance R14, the grounded emitter of audion Q3, the colelctor electrode of audion Q3 is connected with the negative pole of diode D21, the positive pole of diode D21 accesses+12V voltage after concatenating with resistance R13；Voltage feedback signal is also separately input into one end of the negative pole of diode D1, one end of electric capacity C1, one end of resistance R2, one end of resistance R5 and resistance R19, and wherein the positive pole of diode D1, the other end of electric capacity C1 and the other end of resistance R2 converge rear ground connection；The other end of resistance R5 is connected with the in-phase input end of operational amplifier IC2A, and the inverting input of operational amplifier IC2A and outfan are all connected with one end of resistance R3, the other end of resistance R3 concatenate with resistance R4 after ground connection, wherein resistance R4 is also in parallel with electric capacity C2；The positive and negative power end of operational amplifier IC2A connects+12V voltage and ground connection respectively；The other end of resistance R19 is connected with one end of one end of resistance R20 and electric capacity C3 respectively, the other end of resistance R20 accesses in voltage pwm circuit 1112, the other end of electric capacity C3 ground connection and the one end with electric capacity C4 respectively are connected, and the other end of electric capacity C4 accesses in voltage pwm circuit 1112。Wherein the other end of resistance R3 is except being connected with resistance R4, is also connected with front panel 14, is used for showing magnitude of voltage。
Overvoltage comparison circuit 11 includes resistance R9, resistance R10, resistance R15, resistance R16, resistance R58, electric capacity C8, operational amplifier IC4B, NPN type triode Q1, NPN type triode Q4, Zener diode D4, diode D3 and a light emitting diode D22, and light emitting diode D22 may serve as overvoltage display lamp。
One end of electric capacity C8 and the in-phase input end of operational amplifier IC4B are all connected with the in-phase input end of operational amplifier IC6A in voltage signal processing circuit 10, the other end ground connection of electric capacity C8, the inverting input of operational amplifier IC4B is connected with one end of the negative pole of diode D4 and resistance R16 respectively, the plus earth of diode D4, the other end of resistance R16 accesses+12V voltage；The outfan of operational amplifier IC4B is connected with one end of resistance R15, one end of resistance R10 and one end of resistance R58 respectively, the other end of resistance R15 accesses+12V voltage, the other end of resistance R10 is connected with the base stage of audion Q1, the grounded emitter of audion Q1, the colelctor electrode of audion Q1 is connected with the negative pole of diode D22, and the positive pole of diode D22 accesses+12V voltage after concatenating with resistance R9；The other end of resistance R58 is connected with the positive pole of diode D3, and the negative pole of diode D3 is connected with the base stage of audion Q4, the grounded emitter of audion Q4, and the colelctor electrode of audion Q4 accesses in voltage pwm circuit 1112。
Voltage pwm circuit 1112 includes resistance R18, resistance R21, resistance R23, electric capacity C5, polarized electric capacity C6, polarized electric capacity C11, polarized electric capacity C12, polarized electric capacity C13, electric capacity C14, integrated circuit die I C5, switch S1, variable resistance RW1 and variable resistance RW2。Its breaker in middle S1 can switch as X ray。
The other end of the resistance R20 of voltage signal processing circuit 1111 is connected with second pin of integrated circuit die I C5 and one end of resistance R21 respectively; the other end of resistance R21 is connected with one end of electric capacity C5, and the other end of electric capacity C5 is connected with the three-prong of electric capacity C4, integrated circuit die I C5 respectively and accesses major loop current foldback circuit 14；First pin of integrated circuit die I C5 is connected with the variable terminals of variable resistance RW1 and the positive pole of electric capacity C11 respectively, and two fixed terminals of variable resistance RW1 are connected and ground connection with the 18th pin of integrated circuit die I C5 respectively；The minus earth of electric capacity C11；18th pin of integrated circuit die I C5 is also connected with the positive pole of electric capacity C12, the minus earth of electric capacity C12；4th pin of integrated circuit die I C5 is connected with the positive pole of electric capacity C6, and the negative pole of electric capacity C6 is connected and ground connection with one end of a fixed terminals of variable resistance RW2, electric capacity C4 respectively；Another fixed terminals of variable resistance RW2 and variable terminals are connected with the 9th pin of integrated circuit die I C5, and the other end of electric capacity C4 is connected with the tenth pin of integrated circuit die I C5；In 5th pin of integrated circuit die I C5 and the 8th pin and overvoltage comparison circuit 11, the colelctor electrode of audion Q4 is all connected with one end of resistance R23, the other end ground connection of resistance R23；The colelctor electrode of audion Q4 is also connected with one end of resistance R18, the other end of resistance R18 with switch S1 one end is connected, switch S1 the other end be connected with the fixed terminals of variable resistance RW1 after ground connection；6th pin of integrated circuit die I C5 and the 7th equal ground connection of pin；14th pin of integrated circuit die I C5 and the 17th pin are connected and access+12V voltage respectively with the positive pole of electric capacity C13, and the 11st pin of integrated circuit die I C5 and the 15th pin are connected and ground connection with the negative pole of electric capacity C13 respectively；12nd pin of integrated circuit die I C5 is connected with electric current pwm circuit 22；Tenth three-prong of integrated circuit die I C5 and the 16th pin are all connected with voltage push-pull circuit 1113。
Voltage push-pull circuit 1113 includes resistance R33, resistance R34, resistance R35, resistance R36, resistance R55, resistance R56, electric capacity C36, electric capacity C37, Zener diode D7, Zener diode D8, depletion type N-type field effect transistor Q9, depletion type N-type field effect transistor Q10, inductance coil L2 and inductance coil L3。
One end of resistance R35 is connected with the tenth three-prong of integrated circuit die I C5 in voltage pwm circuit 1112, the other end of resistance R35 is connected with one end of resistance R36, the negative pole of diode D8 and the grid of field effect transistor Q10 respectively, the other end of resistance R36 and the positive pole of diode D8 be equal ground connection after converging, the source electrode of field effect transistor Q10 is connected with one end of inductance coil L3, the other end ground connection of inductance coil L3；The drain electrode of field effect transistor Q10 is connected and accesses major loop current foldback circuit 1114 respectively with one end of resistance R56, the other end of resistance R56 concatenate with electric capacity C37 after ground connection；One end of resistance R33 is connected with the 16th pin of integrated circuit die I C5 in voltage pwm circuit 1112, the other end of resistance R33 is connected with one end of resistance R34, the negative pole of diode D7 and the grid of field effect transistor Q9 respectively, the other end of resistance R34 and the positive pole of diode D7 be equal ground connection after converging, the source electrode of field effect transistor Q9 is connected with one end of inductance coil L2, the other end ground connection of inductance coil L2；The drain electrode of field effect transistor Q9 is connected and accesses major loop current foldback circuit 1114 respectively with one end of resistance R55, the other end of resistance R55 concatenate with electric capacity C36 after ground connection。
Major loop current foldback circuit 1114 includes resistance R46, resistance R47, resistance R48, resistance R49, resistance R50, electric capacity C26, electric capacity C27, electric capacity C28, electric capacity C29, diode D12, Zener diode D13, Zener diode D14, diode D15, diode D16, current transformer Q13, current transformer Q12, operational amplifier IC9A and operational amplifier IC9B。
In voltage push-pull circuit 1113, the drain electrode of field effect transistor Q9 is also connected with wherein one end of the less winding of current transformer Q13, in figure, the number of windings of the less winding of current transformer Q12 summation current transformer Q13 is a circle, and the other end of the less winding of current transformer Q13 connects the high-tension transformer of x ray generator；Wherein one end ground connection of the relatively Multiple coil of current transformer Q13, the other end of the relatively Multiple coil of current transformer Q13 is connected with the positive pole of diode D16, the negative pole of diode D16 concatenate with resistance R49 after ground connection；In voltage push-pull circuit 1113, the drain electrode of field effect transistor Q10 is also connected with wherein one end of the less winding of current transformer Q12, and the other end of the less winding of current transformer Q12 connects the high-tension transformer of x ray generator；Wherein one end ground connection of the relatively Multiple coil of current transformer Q12, the other end of the relatively Multiple coil of current transformer Q12 is connected with the positive pole of diode D15, the negative pole of diode D15 is connected with one end of resistance R49, the negative pole of diode D13 and one end of resistance R47 respectively, the other end ground connection of resistance R49, the other end ground connection of diode D13, resistance R47 is connected with the in-phase input end of one end of electric capacity C29 and operational amplifier IC9B respectively, the other end ground connection of electric capacity C29；The inverting input of operational amplifier IC9B is connected with one end of resistance R50, the outfan of operational amplifier IC9B and one end of electric capacity C27 respectively；The other end ground connection of electric capacity C27, the other end of resistance R50 is connected with the inverting input of one end of resistance R46 and operational amplifier IC9A respectively, the other end of resistance R46 is connected with one end of electric capacity C28, the other end of electric capacity C28 is connected with the outfan of operational amplifier IC9A, the negative pole of diode D12 and one end of electric capacity C26 respectively, the other end ground connection of electric capacity C26, the positive pole of diode D12 is connected with the three-prong of integrated circuit die I C5 in voltage pwm circuit 1112；The normal phase input end of operational amplifier IC9A is connected with one end of the negative pole of diode D14 and resistance R48 respectively, the other end ground connection of diode D14, and the other end of resistance R48 accesses+12V voltage；The positive and negative power end of operational amplifier IC9A connects+12V voltage and ground connection respectively。
Current signal processes circuit 112 and includes resistance R7, resistance R24, resistance R25, resistance R26, resistance R37, resistance R39, electric capacity C9, electric capacity C16, electric capacity C17, transition diode D5 and operational amplifier IC2B；
The current feedback signal that x ray generator produces is separately input into one end of the negative pole of diode D5, one end of resistance R26, one end of electric capacity C9, one end of resistance R37 and resistance R7, wherein, the positive pole of diode D5, the other end of resistance R26 and the other end of electric capacity C9 converge rear ground connection；The other end of resistance R7 is connected with the in-phase input end of operational amplifier IC2B, and the other end of resistance R37 is connected with one end of one end of resistance R39 and electric capacity C16 respectively, the other end ground connection of electric capacity C16, and another of resistance R39 accesses electric current pwm circuit 1122；The inverting input of operational amplifier IC2B is connected with one end of the outfan of operational amplifier IC2B and resistance R24 respectively, the other end of resistance R24 is connected with one end of one end of resistance R25 and electric capacity C17 respectively, the other end of resistance R25 and the equal ground connection of the other end of electric capacity C17。Wherein the other end of resistance R24 is except being connected with resistance R25 and electric capacity C17, is also connected with the front panel of x ray generator control chamber, is used for showing current value。
Crossing stream comparison circuit 1124 and include resistance R11, resistance R12, resistance R27, resistance R31, resistance R32, resistance R57, operational amplifier IC6B, NPN type triode Q2, diode D2, variable resistance RW5 and light emitting diode D23, wherein light emitting diode D23 can as crossing stream display lamp。
Current feedback signal is accessed in one end of resistance R27, the other end is connected with the in-phase input end of operational amplifier IC6B, the inverting input of operational amplifier IC6B is connected with a fixed terminals of variable resistance RW5 and one end of resistance R31 respectively, another fixed terminals of variable resistance RW5 and variable terminals ground connection, the other end of resistance R31 accesses+12V voltage；The outfan of operational amplifier IC6B is connected with one end of resistance R32, one end of resistance R57 and one end of resistance R12 respectively, the other end of resistance R32 accesses+12V voltage, the other end of resistance R57 is connected with the positive pole of diode D2, the negative pole of diode D2 is connected with the negative pole of the D3 of overvoltage comparison circuit 1115, the other end of resistance R12 is connected with the base stage of audion Q2, the grounded emitter of audion Q2, the colelctor electrode of audion Q2 is connected with the negative pole of diode D23, and the positive pole of diode D23 accesses+12V voltage after concatenating with resistance R11。
Electric current pwm circuit 1122 includes resistance R38, resistance R40, resistance R64, electric capacity C18, electric capacity C19, polarized electric capacity C20, polarized electric capacity C21, polarized electric capacity C22, polarized electric capacity C23, electric capacity C25 and integrated circuit die I C8。
First pin of integrated circuit die I C8 is respectively connected to heat stream stream change-over circuit 1125 and the positive pole with electric capacity C20 is connected, the minus earth of electric capacity C20, the resistance R39 that second pin of integrated circuit die I C8 processes in circuit 1121 with current signal respectively is connected and is connected with one end of resistance R38, the other end of resistance R38 is connected with one end of electric capacity C18, the lead-in wire that the other end of electric capacity C18 picks out with the three-prong of integrated circuit die I C8 respectively accesses heat stream stream change-over circuit 1125 after converging and the one end with electric capacity C19 is connected, the other end ground connection of electric capacity C19；4th pin of integrated circuit die I C8 is connected with the positive pole of electric capacity C21, the minus earth of electric capacity C21；5th pin of integrated circuit die I C8 and the 8th pin are all connected with one end of resistance R40, and the other end of resistance R40 accesses reference voltage Vref 1；The 6th pin ground connection of integrated circuit die I C8；7th pin of integrated circuit die I C8 accesses electric current push-pull circuit 1123；9th pin of integrated circuit die I C8 is connected with one end of resistance R64, and the tenth pin of integrated circuit die I C8 is connected with one end of electric capacity C25, and the other end of resistance R64 and the other end of electric capacity C25 converge rear ground connection；11st pin of integrated circuit die I C8 and the 15th pin ground connection, the 12nd pin of integrated circuit die I C8 is connected with the 12nd pin of integrated circuit die I C5 in voltage pwm circuit 1112；Tenth three-prong of integrated circuit die I C8 accesses electric current push-pull circuit 1123；14th pin of integrated circuit die I C8 and the 17th pin are connected and access+12V voltage, the minus earth of electric capacity C23 respectively with the positive pole of electric capacity C23；16th pin of integrated circuit die I C8 accesses electric current push-pull circuit 1123；18th pin of integrated circuit die I C8 is respectively connected to reference voltage Vref 1 and the positive pole with electric capacity C22 is connected, the minus earth of electric capacity C22。
Electric current push-pull circuit 1123 includes resistance R41, resistance R42, resistance R43, resistance R44, resistance R45, resistance R51, resistance R52, resistance R53, Zener diode D9, Zener diode D10, Zener diode D11, electric capacity C24, electric capacity C30, electric capacity C33, electric capacity C34, depletion type N-type field effect transistor Q7 and depletion type N-type field effect transistor Q8。
One end of resistance R43 is connected with the 16th pin of electric current pwm circuit 1122 integrated circuit die I C8, the other end of resistance R43 is connected with one end of resistance R42, the negative pole of diode D10 and the grid of field effect transistor Q7 respectively, and the other end of resistance R42 and the positive pole of diode D10 converge rear ground connection；The drain electrode of field effect transistor Q7 is connected with one end of electric capacity C30 and the filament transformer of x ray generator respectively, the other end of electric capacity C30 concatenate with resistance R51 after ground connection；The source electrode of field effect transistor Q7 concatenate with electric capacity C34 after ground connection；One end of resistance R44 is connected with the tenth three-prong of electric current pwm circuit 1122 integrated circuit die I C8, the other end of resistance R44 is connected with one end of resistance R45, the negative pole of diode D11 and the grid of field effect transistor Q8 respectively, and the other end of resistance R45 and the positive pole of diode D11 converge rear ground connection；The drain electrode of field effect transistor Q8 is connected with one end of electric capacity C33 and the filament transformer of x ray generator respectively, the other end of electric capacity C33 concatenate with resistance R53 after ground connection；The source electrode of field effect transistor Q8 concatenate with electric capacity C34 after ground connection；7th pin of electric current pwm circuit 1122 integrated circuit die I C8 is connected with the negative pole of diode D9, one end of electric capacity C24 and one end of resistance R41 respectively, the positive pole of diode D9 and the other end of electric capacity C24 converge rear ground connection, the other end of resistance R41 is connected with one end of resistance R52, the source electrode of field effect transistor Q7, the source electrode of field effect transistor Q8 and one end of electric capacity C34 respectively, the other end of resistance R52 and the equal ground connection of the other end of electric capacity C34。
Heat stream stream change-over circuit 1125 includes resistance R6, variable resistance RW3, variable resistance RW4, NPN type triode Q5, diode D17, relay Q14 and a selection switch。
One end of resistance R6 is connected with the outfan of operational amplifier IC6A in voltage signal processing circuit 1111, the other end of resistance R6 is connected with the base stage of audion Q5, the grounded emitter of audion Q5, the colelctor electrode of audion Q5 is connected with one end of the positive pole of diode D17 and relay Q14 respectively, and the negative pole of diode D17 and the other end of relay Q14 all access+12V voltage；Two fixed terminals of variable resistance RW3 and two fixed terminals of variable resistance RW4 ground connection and reference voltage Vref 1 respectively, the variable terminals of variable resistance RW3 are connected with first pin of integrated circuit die I C8 in electric current push-pull circuit 1123, the variable terminals of variable resistance RW3 are connected with the three-prong of integrated circuit die I C8 in electric current push-pull circuit 1123, wherein the variable terminals of variable resistance RW3 and electric current push-pull circuit 1123 are provided with selection switch between the three-prong of integrated circuit die I C8, the variable terminals that select switch one selects shelves to be connection variable resistance RW3 and the three-prong of integrated circuit die I C8 in electric current push-pull circuit 1123, another selection gear selecting switch is neutral。
In above-mentioned concrete example, the voltage feedback signal that x ray generator produces is after voltage signal processing circuit 1111, no-load voltage ratio voltage signal is generated according to special ratios, in actual applications, can be the no-load voltage ratio signal of 1v:57.85kv, i.e. 1v correspondence 57.85kv, voltage feedback signal is through penetrating after with isolation of amplifier, to one voltage signal of user, namely can be 2v correspondence 140kv。When voltage feedback signal more than 0.17v or high pressure more than 10kv time, ray display lamp is bright。
Voltage pwm circuit 1112 is according to given magnitude of voltage and feedback voltage signal, exports 2 road square waves through integral amplifier, carrys out driving voltage push-pull circuit 1113；Voltage pwm circuit 1113 is a close loop negative feedback circuit。
Overvoltage comparison circuit 1115 is that voltage feedback signal and overvoltage setting value are compared, and if greater than overvoltage setting value, then the PWM chip pulse in voltage pwm circuit 1112 is sealed, does not produce pulse, quit work。
2 power switch pipes of major loop current foldback circuit 1114 connect the medium-frequency high-voltage transformator in x-ray source。Major loop current foldback circuit 1114 is mainly when breaking down, and main circuit current increases, and is shut off the PWM chip in voltage pwm circuit 1112 when exceeding setting value。
The current feedback signal that x ray generator produces is after current signal processes, the voltage signal corresponding with electric current is formed according to special ratios, in actual applications, it can be the signal of 1mA correspondence 2.56v, current feedback signal is through penetrating after with isolation of amplifier, to one voltage signal of user, namely can be 2v correspondence 1mA。
Electric current pwm circuit 1122 is according to given current value and feedback current, exports 2 road square waves through integral amplifier, and driving electric current push-pull circuit 1123, electric current pwm circuit 1122 is a close loop negative feedback circuit。2 power switch pipes of electric current push-pull circuit 1123 connect the intermediate frequency filament transformer in x-ray source；
When current feedback signal is more than the overcurrent value set, directly seals the PWM chip pulse of voltage pwm circuit 1112, do not produce pulse, quit work。
Time heat stream stream change-over circuit 1125 is not have high pressure after x ray generator is started shooting, X-ray tube filament needs certain electric current, i.e. heat flow value。After opening high pressure, electric current will being had to produce, send ray in X-ray tube, the electric current in X-ray tube at this moment is called line, and line value can be set by user oneself。
Voltage pwm circuit 1112 and electric current pwm circuit 1122 all include IC chip, and IC chip adopts UC3526AN chip。
Voltage push-pull circuit 1113 includes field effect transistor, and field effect transistor adopts IRFP250M。
Electric current push-pull circuit 1123 includes field effect transistor, and field effect transistor adopts IRF460。
Being also integrated with the first socket 113 on master controller 11, the first socket 113 is connected with high tension voltage control circuit 111 and filament current control circuit 112 respectively, for front panel 14 is connected to master controller 11。First socket finger hole is 14 core sockets。
Master controller 11 is also integrated with the second socket 114, for high tension voltage control circuit 111 and filament current control circuit 112 being connected with interface 2 respectively through Current Feedback Control line and Voltage Feedback control line；Interface 2 is ten core aviation sockets, and the second socket finger hole is 8 core sockets。
Master controller 11 is also integrated with the 3rd socket 115 and auxiliary power module 116,3rd socket 115 provides for power-switching circuit 12 and auxiliary power module 116 and connects interface, make auxiliary power module 116 that the+48V voltage that power-switching circuit exports is converted to+12V voltage, it is provided that to each circuit on main controller controls plate。3rd socket is 6 core sockets。Fig. 6 is the circuit diagram of auxiliary power module, auxiliary power module 116 power-switching circuit 12 is converted after+48V voltage change further。
Front panel 14 adopts analog interface or single-chip microcomputer。
Analog interface is that voltage x current requires to regulate according to user, only need to control X-ray emission switch and can send or close ray；And single-chip microcomputer can with upper machine communication, user oneself can arrange voltage x current value, and is turned on and off ray。
As shown in Figure 4, a kind of x-ray source device, including a kind of x-ray source control chamber, also include x-ray source, shell 1 is additionally provided with interface 2, x-ray source is connected by interface 2 with X ray electric control box。Interface 2 is 10 core aviation sockets。
These are only preferred embodiment of the present utility model, not in order to limit this utility model, all within spirit of the present utility model and principle, any amendment of making, equivalent replacement, improvement etc., should be included within protection domain of the present utility model。
Claims (10)
1. an x-ray source control chamber, it is characterized in that, including shell (1), described shell (1) is internally provided with master controller (11), power-switching circuit (12), the first radiator (13) and front panel (14), and described power-switching circuit (12), described first radiator (13) and described front panel (14) are all connected with described master controller (11)；
Described master controller (11) includes integrated high tension voltage control circuit (111) on circuit boards and filament current control circuit (112)。
2. a kind of x-ray source control chamber according to claim 1; it is characterized in that; described high tension voltage control circuit (111) includes voltage signal processing circuit (1111), voltage pwm circuit (1112), voltage push-pull circuit (1113), major loop current foldback circuit (1114) and overvoltage comparison circuit (1115); described voltage signal processing circuit (1111); receive the voltage feedback signal that x ray generator produces, and voltage feedback signal is generated no-load voltage ratio voltage signal according to special ratios；Described voltage signal processing circuit (1111) is connected with described overvoltage comparison circuit (1115) and described voltage pwm circuit (1112)；Described overvoltage comparison circuit (1115) is also connected with described voltage pwm circuit (1112)；Described voltage pwm circuit (1112) is also connected with described voltage push-pull circuit (1113) and described major loop current foldback circuit (1114), and described voltage push-pull circuit (1113) is connected with described major loop current foldback circuit (1114)；Described major loop current foldback circuit (1114) is connected with the high-tension transformer of x ray generator。
3. a kind of x-ray source control chamber according to claim 2, it is characterized in that, described filament current control circuit (112) includes current signal and processes circuit (1121), electric current pwm circuit (1122), electric current push-pull circuit (1123), crosses stream comparison circuit (1124) and heat stream stream change-over circuit (1125)；
Described current signal processes circuit (1121), receives the current feedback signal that x ray generator produces, and according to special ratios, current feedback signal is changed into voltage signal；Described current signal process circuit (1121) crosses stream comparison circuit (1124) with described and described electric current pwm circuit (1122) is connected, described electric current pwm circuit (1122) is also connected with described electric current push-pull circuit (1123) and described heat stream stream change-over circuit (1125), and described electric current push-pull circuit (1123) is connected with the filament transformer of x ray generator；
Wherein, described stream comparison circuit (1124) of crossing also is connected with described voltage pwm circuit (1112), and described heat stream stream change-over circuit (1125) is also connected with described voltage signal processing circuit (1111)。
4. a kind of x-ray source control chamber according to claim 3, it is characterised in that also include the second radiator, be installed on described voltage push-pull circuit (1113) and described electric current push-pull circuit (1123) position。
5. a kind of x-ray source control chamber according to claim 1, it is characterized in that, being also integrated with the first socket (113) on described master controller (11), described first socket (113) is connected with described high tension voltage control circuit (111) and filament current control circuit (112) respectively。
6. a kind of x-ray source control chamber according to claim 1, it is characterized in that, described first radiator (13) is fan, and described first radiator (13) is arranged on described master controller (11) around for master controller (11) heat radiation。
7. a kind of x-ray source control chamber according to claim 1, it is characterized in that, being also integrated with the second socket (114) on described master controller (11), described second socket (114) is connected with described high tension voltage control circuit (111) and filament current control circuit (112) respectively。
8. a kind of x-ray source control chamber according to claim 1, it is characterized in that, described master controller (11) is also integrated with the 3rd socket (115) and auxiliary power module (116), described 3rd socket (115) is connected with auxiliary power module (116), also it is connected with described power-switching circuit (12), described 3rd socket (115) provides for power-switching circuit (12) and described auxiliary power module (116) and connects interface, described auxiliary power module (116) is connected with described high tension voltage control circuit (111) and filament current control circuit (112) respectively。
9. a kind of x-ray source control chamber according to claim 1, it is characterised in that described front panel (14) adopts analog interface or single-chip microcomputer。
10. an x-ray source device, it is characterized in that, including x-ray source control chamber a kind of as described in any one of claim 1-9, also include x-ray source, being additionally provided with interface (2) on described shell (1), described x-ray source is connected by interface (2) with described x-ray source control chamber。
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| CN201521127128.0U CN205333878U (en) | 2015-12-29 | 2015-12-29 | X ray source control case and X ray source device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115862274A (en) * | 2023-03-03 | 2023-03-28 | 安标国家矿用产品安全标志中心有限公司 | Multi-band radio frequency electromagnetic energy explosion-proof ignition test device and method |
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2015
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115862274A (en) * | 2023-03-03 | 2023-03-28 | 安标国家矿用产品安全标志中心有限公司 | Multi-band radio frequency electromagnetic energy explosion-proof ignition test device and method |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An X-ray source control box and X-ray source device Effective date of registration: 20220706 Granted publication date: 20160622 Pledgee: Beijing finance Company limited by guarantee Pledgor: BEIJING KAIWEIXINDA TECHNOLOGY Co.,Ltd. Registration number: Y2022990000418 |
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