CN204259266U - A kind of digitlization is used for the high voltage source of movable high-frequency X-ray machine - Google Patents
A kind of digitlization is used for the high voltage source of movable high-frequency X-ray machine Download PDFInfo
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- CN204259266U CN204259266U CN201420828561.6U CN201420828561U CN204259266U CN 204259266 U CN204259266 U CN 204259266U CN 201420828561 U CN201420828561 U CN 201420828561U CN 204259266 U CN204259266 U CN 204259266U
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Abstract
A kind of digitlization is used for the high voltage source of movable high-frequency X-ray machine, high-voltage driving circuit module is connected at STM32F103 controller, heater current driver module, peripheral input information acquisition module, CAN communication module, power supply prime treatment circuit, peripheral input information acquisition module, CAN communication module, CPLD protective circuit, 1# Voltage Reference source circuit and 2# Voltage Reference source circuit, and be provided with peripheral input port; High-voltage driving circuit module is connected high pressure generator with heater current driver module.The utility model completes the steady operation of STM32F103 controller control system by twin voltage reference source, effectively prevents from causing unnecessary loss because of deadlock.Still can the precision of calibration voltage reference source accurately after long-time use, the drift that solution equipment causes because using for a long time.Adopt the logical schema of STM32F103 controller and the concurrent working of CPLD protective circuit to carry out control switch ray, break down can in 100us fast shut-off high voltage protective ray tube.
Description
Technical field
The utility model relates to a kind of high voltage source of high frequency X X-ray machine X.Relate to a kind of high frequency EHT supply of mobile X-ray unit specifically.
Background technology
Mobile high-frequency X-ray high voltage source is the important component part of x-ray system.The control precision of this power supply and stability directly affects the life-span of X-ray tube, reliability.Current mobile high-frequency X-ray high voltage source is in control precision, and reliability, maintainability is all difficult to the actual needs meeting ray tube.Existing mobile high-frequency X-ray power-supply system is applied in x-ray system, or output stability is inadequate, and Long-Time Service output voltage may produce drift.Or protection speed is fast not, fast not to X-ray tube protection speed when high-pressure system breaks down, the responsiveness of house dog is slow, and between single chip microcomputer halt to house dog action two time points, system has of short duration out of control, causes X-ray tube to damage.Once high voltage source breaks down damage X-ray tube possibly, break down and be difficult to diagnosis.The Function Extension difficulty of system, can not meet the control needs of multiple occasion.Peripheral defencive function imperfection, the flow of coolant pump and temperature are all adopt switching value mouth.Once the faults such as open circuit appear short circuit, in any link of protection mouth, probably cause single-chip microcomputer cannot fetch protection signal, cause X-ray production apparatus to damage.
Summary of the invention
According to existing mobile high-frequency X-ray high voltage source Problems existing, the utility model proposes the control precision that a kind of high voltage source exports high pressure, reliability, maintainable all very high technical scheme.
For solving the problems of the technologies described above, concrete technical scheme of the present utility model is: a kind of digitlization is used for the high voltage source of movable high-frequency X-ray machine, comprise high-voltage driving circuit module 2, heater current driver module 3, high pressure generator 4, peripheral input information acquisition module 5, CAN communication module 6 and CPLD protective circuit 8, it is characterized in that: the interface DA1 of STM32F103 controller 1 connects high-voltage driving circuit module 2, STM32F103 controller 1 interface DA2 connects filament current drives module 3, high-voltage driving circuit module 2 is connected high pressure generator 4 with heater current driver module 3, the AIN interface of STM32F103 controller 1 connects peripheral input information acquisition module 5, the interface RX1 of STM32F103 controller 1 connects the receiving terminal of CAN communication module 6, the interface TX1 of STM32F103 controller 1 connects the transmitting terminal of CAN communication module 6, the interface VDD of STM32F103 controller 1 connects power supply prime treatment circuit 7, STM32F103 controller 1 output PC interface connects the input of CPLD protective circuit 8, the VREF+ pin of STM32F103 controller 1 connects the IN pin of 1#MAX6126 voltage reference source 9, the AIN1 pin of STM32F103 controller 1 connects the VIN pin of 2#ADR380 voltage reference source 10, and the interface PC11 of STM32F103 controller 1 is provided with peripheral input port 11.
The utility model has the following advantages:
1, completed the steady operation of STM32F103 controller control system by twin voltage reference source, can effectively prevent from like this causing unnecessary loss because of deadlock.
2, still can the precision of calibration voltage reference source accurately after long-time use, the drift that solution equipment causes because using for a long time.
3, the logical schema of STM32F103 controller and the concurrent working of CPLD protective circuit is adopted to carry out control switch ray; the core protection circuit of system realizes real-time examination and controlling by EMP3064 chip, once the system of breaking down can in 100us fast shut-off high voltage protective ray tube.
4, native system can carry out real-time monitoring to the flow of cooling fluid inside coolant pump, pressure and temperature in real time, and transmits man-machine interface display by CAN communication module, and protects this cover high-pressure system.
5, the PC control platform of native system is furnished with Ethernet interface, and operating personnel can pass through the switching of the Internet Long-distance Control ray tube high pressure, and can remote diagnosis system after breaking down.
6, native system is furnished with figure automatic capturing function, when operating personnel after system malfunctions can start HT waveform when schematic capture pattern checks fault, has saved the time greatly to like this maintenance of fault.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present utility model;
Fig. 2 system, control circuit connection layout;
In figure: 1.STM32F103 controller; 2. high drive module; 3. filament driving circuit, 4. high pressure generator, 5. peripheral input information acquisition module; 6.CAN bus communication module; 7. power supply prime treatment circuit, 8. CPLD protective circuit, 9. 1# MAX6126 Voltage Reference source circuit; 10. 2# ADR380 Voltage Reference source circuit, 11. peripheral input ports.
Embodiment
Be described with reference to the accompanying drawings structure of the present utility model.
A kind of digitlization is used for the high voltage source of movable high-frequency X-ray machine, as depicted in figs. 1 and 2, STM32F103 controller 1(ST Microelectronics produce) interface 29 connect the high-voltage driving circuit module 2 that model is IXDH35N60B, STM32F103 controller 1 interface 30 connects the heater current driver module 3 that model is IR2110, high-voltage driving circuit module 2 is connected high pressure generator 4 with heater current driver module 3, the AIN interface of STM32F103 controller 1 connects the periphery input information acquisition module 5 that model is STM32F103, interface RX1 with TX1 of STM32F103 controller 1 is connected the CAN communication module 6 that model is ADM3251, the interface VDD of STM32F103 controller 1 connects the power supply prime treatment circuit 7 that model is VBO36-08N08, STM32F103 controller 1 output PC connects the input that model is the CPLD protective circuit 8 of EPM3064, the pin VREF+ of STM32F103 controller 1 connects 1#MAX6126 voltage reference source 9(U.S. Maxim and produces) pin IN, the pin AIN1 of STM32F103 controller 1 connects AD company of the 2#ADR380 voltage reference source 10(U.S. and produces) pin VIN, the interface PC11 of STM32F103 controller 1 is provided with peripheral input port 11.
The course of work of the present utility model and operation principle are: high voltage source with STM32F103 controller 1 for Systematical control core, high voltage source core control system includes high drive module 2, filament drive module 3, high pressure generator 4 and peripheral input information acquisition module 5, wherein STM32F103 controller 1 controls the normal operation of high drive module 2 and filament drive module 3 respectively, high pressure sampling and heater current institute are gathered after the voltage and current signal come carries out analyzing and processing and generates corresponding control signal control high drive module 2 and filament drive module 3, thus control high pressure generator 4 produces controllable high-voltage for ray tube.STM32F103 controller 1 and CAN communication module 6; power supply prime treatment circuit 7; CPLD protective circuit 8; 1# Voltage Reference source circuit 9 is connected with 2# voltage reference source 10; after core system powers on; STM32F103 controller 1 sends and controls in real time and pilot signal; once system cloud gray model break down after CPLD protective circuit 8 can send protection system signal rapidly; and send a series of operate condition; reach in time, protected effect fast, and then achieve the object of protection ray tube fast.
The running status of CPLD protective circuit 8 also monitored by STM32F103 controller 1 simultaneously, once find CPLD protective circuit 8 operation exception, can produce fault alarm, and can turn off high pressure immediately.Power supply prime treatment circuit 7, high drive module 2, filament drive module 3 is subject to the parallel control of STM32F103 controller 1 and CPLD protective circuit 8, after only having the two all to allow out high pressure, opens pressure and just allows to open.
The mode that high pressure cpu system adopts STM32F103 controller 1 and CPLD protective circuit 8 concurrent working to control.CPLD protective circuit 8 is responsible for the digital filtering of input port, by filtered signal transmission to STM32F103 controller 1.Whether CPLD protective circuit 8 is responsible for monitoring STM32F103 controller 1 simultaneously and is crashed; the square-wave signal of meeting output frequency 20K when STM32F103 controller 1 normally works; if CPLD protective circuit 8 does not receive this signal, represent that STM32F103 controller 1 has crashed.So CPLD protective circuit 8 can 100us internal cutting off high pressure after STM32F103 controller 1 crashes, then progressively cut off heater chain and front level power supply.
Simultaneously the core that STM32F103 controller 1 system is run continuously have employed two reference power sources to work to ensure that high pressure cpu system two voltage reference sources that can work normally work simultaneously.These two voltage reference sources be respectively 1#MAX6126 voltage reference source 9 with 2#AD380 voltage reference source 10 two integrated chips to complete the generation of reference voltage, 1#MAX6126 voltage reference source 9 chip produces 2.5V reference voltage, and another road 2V reference voltage source is then produced by 2#ADR380 voltage reference source 10 three-terminal voltage-stabilizing chip.In order to prevent causing the precision of 2 road reference voltage sources, stability influenced because of factor interference such as extraneous instability, the input and output side of MAX6126 and ADR380 integration slice adds the interference that decoupling capacitor produces to prevent extraneous destabilizing factor etc. a reference source respectively over the ground in fig. 2.Voltage reference source is the core of system cloud gray model, once voltage reference source has fault, produces 3% drift, and all A/D samplings and D/A export the drift that can produce 3%.Drift for general X-ray machine X 3% is equivalent to the drift of tens kilovolts, probably can damage X-ray tube, cause serious financial consequences.System adopts twin voltage reference source technology for this reason, adopts a 2.5V voltage reference source to do benchmark, uses a 2V voltage reference source as correction simultaneously.During system works, constantly to sample to 2V voltage reference source, if sampled voltage is not 2V, AD being described, there is fault in DA system.
At the AlN7 of STM32F103 controller 1, AlN14, AlN15, the peripheral information Bian collection module 5 that the interface of AlN8 with AlN9 is connected accesses the output signal end of flow and the temperature sensor be placed in coolant pump, timely reading, then pass through CAN bus communication module 6 by this signal with outside transmission 5 frame per second.If high voltage source finds that the flow read had fault or do not read the Frame of coolant pump transmission in 0.5 second, then can determine that cooling system has fault, and turn off X ray immediately, to protect ray tube.In addition this cover high voltage power supply is also furnished with host computer Remote Diagnosis System, after system opens high pressure, scene has very strong radiation, operating personnel can by the switching of computer remote Schema control high pressure, and kV and the mA value of high pressure is regulated by remote computer, unusual waveforms when teleworker can start image capture mode registers high pressure is reported to the police timely when system malfunctions is reported to the police, so brings very large facility to the diagnosis of fault and maintenance.Above-mentioned STM32F103 controller 1 controls high drive module 2 and filament drive module 3, high pressure generator is driven to produce the operable high pressure of ray tube, STM32F103 controller 1 runs the operation needing system can be made normally errorless with CPLD protective circuit 8 co-ordination simultaneously normally, simultaneously STM32F103 controller 1 operation information and monitoring and sample information can to pass through CAN technology long-range on computer, and the testing circuit of high voltage source periphery all can carry out detecting & monitoring by the peripheral input port 11 on STM32F103 controller 1.
High voltage source is generally placed on X ray side, because there is radiation at scene, measures more difficult.And general use scene does not have maintenance personal and corresponding maintenance tool yet.In order to diagnose accurately, maintenance.Man-machine interface is configured with waveform display module, and power-supply system, by high-speed sampling, obtains output high pressure, the instantaneous value of output current, and passes to the waveform display module of man-machine interface by CAN, in liquid crystal screen display.Waveform module has automatic capturing function, can the unusual waveforms of automatic capturing high-pressure system.Operating personnel can leave Wave anomaly by photo module, and send to far-end by the Internet take personnel.For more complicated fault, attendant can adopt debugging software to diagnose and directly control X-ray production apparatus, and acquisition of diagnostic information.The remote diagnostic center that computer runs operating personnel can press " Remote mode " afterwards by the Internet at the scene, controls the switch of X ray.Remote monitor pipe pressure, the real time information of pipe stream.
Claims (1)
1. a digitlization is used for the high voltage source of movable high-frequency X-ray machine, comprise high-voltage driving circuit module (2), heater current driver module (3), high pressure generator (4), peripheral input information acquisition module (5), CAN communication module (6) and CPLD protective circuit (8), it is characterized in that: the interface DA1 of STM32F103 controller (1) connects high-voltage driving circuit module (2), STM32F103 controller (1) interface DA2 connects filament current drives module (3), high-voltage driving circuit module (2) is connected high pressure generator (4) with heater current driver module (3), the AIN interface of STM32F103 controller (1) connects peripheral input information acquisition module (5), the interface RX1 of STM32F103 controller (1) connects the receiving terminal of CAN communication module (6), the interface TX1 of STM32F103 controller (1) connects the transmitting terminal of CAN communication module (6), the VDD interface of STM32F103 controller (1) 1 connects power supply prime treatment circuit (7), STM32F103 controller (1) output PC connects the input of CPLD protective circuit (8), the VREF+ pin of STM32F103 controller (1) connects the IN pin of 1#MAX6126 voltage reference source (9), the pin 24 of STM32F103 controller (1) connects the VIN pin of 2#ADR380 voltage reference source (10), and the interface PC11 of STM32F103 controller 1 is provided with peripheral input port (11).
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| CN201420828561.6U CN204259266U (en) | 2014-12-24 | 2014-12-24 | A kind of digitlization is used for the high voltage source of movable high-frequency X-ray machine |
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| CN201420828561.6U CN204259266U (en) | 2014-12-24 | 2014-12-24 | A kind of digitlization is used for the high voltage source of movable high-frequency X-ray machine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104470174A (en) * | 2014-12-24 | 2015-03-25 | 丹东华日理学电气股份有限公司 | Digitalized high voltage power source for movable high-frequency X-ray machine |
| CN105939564A (en) * | 2016-07-13 | 2016-09-14 | 东文高压电源（天津）股份有限公司 | Integrated small-sized negative output X-ray tube high-voltage power source |
| TWI699950B (en) * | 2017-12-20 | 2020-07-21 | 美商迪安科技股份有限公司 | Digital high voltage power supply |
| CN112748353A (en) * | 2020-12-29 | 2021-05-04 | 烟台大学 | XPSI board fault diagnosis method for high-voltage generator |
-
2014
- 2014-12-24 CN CN201420828561.6U patent/CN204259266U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104470174A (en) * | 2014-12-24 | 2015-03-25 | 丹东华日理学电气股份有限公司 | Digitalized high voltage power source for movable high-frequency X-ray machine |
| CN105939564A (en) * | 2016-07-13 | 2016-09-14 | 东文高压电源（天津）股份有限公司 | Integrated small-sized negative output X-ray tube high-voltage power source |
| CN105939564B (en) * | 2016-07-13 | 2017-08-25 | 东文高压电源（天津）股份有限公司 | A kind of integrated small negative output X-ray tube high voltage power supply |
| TWI699950B (en) * | 2017-12-20 | 2020-07-21 | 美商迪安科技股份有限公司 | Digital high voltage power supply |
| CN111656300A (en) * | 2017-12-20 | 2020-09-11 | 迪恩科技公司 | Digital high-voltage power supply |
| CN112748353A (en) * | 2020-12-29 | 2021-05-04 | 烟台大学 | XPSI board fault diagnosis method for high-voltage generator |
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Address after: 118001 139 Dongping Avenue, Zhen An District, Dandong, Liaoning. Patentee after: Dandong Huari Electric Co., Ltd. Address before: 118001 Dongping Avenue, Dandong, Dandong, Liaoning Patentee before: DANDONG HUARI SCIENCE ELECTRIC CO., LTD. |