CN1264477C - Electric diaphragm driver in X-ray unit imaging system - Google Patents
Electric diaphragm driver in X-ray unit imaging system Download PDFInfo
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- CN1264477C CN1264477C CNB2004100204429A CN200410020442A CN1264477C CN 1264477 C CN1264477 C CN 1264477C CN B2004100204429 A CNB2004100204429 A CN B2004100204429A CN 200410020442 A CN200410020442 A CN 200410020442A CN 1264477 C CN1264477 C CN 1264477C
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- motor
- diaphragm
- optical filter
- light diaphragm
- control
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- 238000003384 imaging method Methods 0.000 title 1
- 230000003287 optical effect Effects 0.000 claims abstract description 35
- 230000033001 locomotion Effects 0.000 claims description 10
- 230000000712 assembly Effects 0.000 claims description 2
- 238000000429 assembly Methods 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The present invention belongs to the technical field of the medical instruments. The present invention is composed of an executive component which is composed of a stepping electric machine, a light diaphragm and an optical filter, a control circuit and a control program. A pinion is installed on a shaft of the stepping electric machine, and a light diaphragm gear wheel is installed at the side of the pinion. The pinion and the light diaphragm gear wheel are meshed, and simultaneously, the light diaphragm gear wheel is connected with a diaphragm blade. The light diaphragm gear wheel rotates to drive the blade so that the diameter of an opening hole of the light diaphragm is changed. The optical filter is simultaneously connected with the shaft of the electric machine, and one end of the optical filter freely rotates around the shaft of the electric machine. The other end of the optical filter is a driving handle, and a slotted hole is arranged on the driving handle. A vertical convex pin is fixed on the electric light diaphragm gear wheel, and the convex pin on the light diaphragm moves in the slotted hole on the driving handle of the optical filter. The control circuit is composed of an electric machine driving circuit and a light diaphragm driving circuit. A computer controlled program is solidified in a CPU storage device so that the control program is used for controlling the automatic coordination work for the electric light diaphragm and the optical filter. Consequently, the driving circuits are simplified to reach the optimum image effect.
Description
Technical field
The invention belongs to technical field of medical instruments, be applicable to the control operation of diaphragm and optical filter in the image system of RF type X line machine.
Background technology
Image optical system is to use the image pre-treatment and the image acquisition units of the X line machine of image amplifier, usually the major function of X line machine has two, promptly expose and have an X-rayed, when perspective, image system collects the fluorescence of image amplifier output on the cameral CCD wafer, finally image on the monitor, electronic diaphragm is according to different acquisition mode (continuous acquisition, sequence is gathered) and the different visual field (big, in, little) action, the aperture of diaphragm is reached different sizes, improve signal noise ratio (snr) of image and spatial resolution, during exposure: exposure dose is very high, when the light intensity of image amplifier cutout screen output is perspective tens times, saturated for preventing the output of CCD wafer, must before camera lens, add light intensity attenuation equipment, optical filter can move to camera lens the place ahead automatically when exposure, electronic diaphragm is also got to smaller aperture simultaneously, play the decay light intensity, saturated to prevent the output of CCD wafer, and the effect that improves signal noise ratio (snr) of image, as seen, crucial effects is played to the picture quality of X line machine in the correct utilization of electronic diaphragm and optical filter and accurate location.
At present, the drive pattern that adopts in the image system of international mainstream type is: have two driver parts, two motor to drive respectively or a motor and a rotary solenoid, drive electronic diaphragm and optical filter respectively, its shortcoming is: the system cost height, drive circuit is many and complicated, and small product size is huge.
Summary of the invention
For solving the deficiency of driver part drive pattern in the present X line machine image system, purpose of the present invention provides electronic diaphragm actuating device in a kind of X line machine image system, adopt a driver part to carry out the interlock function of diaphragm and optical filter, control electronic diaphragm and optical filter coordination during with realization X line machine perspective and exposure, reach the optimized image effect.
Technical scheme of the present invention is achieved in that
Its structure of actuating device of the present invention is by motor, electronic diaphragm, the execution unit that optical filter is formed, control circuit and control sequence three parts are formed, wherein on the step motor shaft pinion is housed in the execution unit, the diaphragm gear is equipped with in the pinion side, pinion and diaphragm gears engaged, the diaphragm gear connects with electronic blade of diaphragm, the diaphragm gear rotates, the drive blade moves, change electronic diaphragm and open pore size, on motor shaft, connect optical filter simultaneously, optical filter one end can freely rotate around motor shaft, the optical filter other end drives on the handle and has slotted hole for driving handle, is fixed with a vertical protrudent pin therewith on the gear of electronic diaphragm, be pin feature, protrudent pin on the electronic diaphragm drives on the handle at optical filter and moves in the slotted hole, drives the optical filter motion, realizes the coordination linkage (as shown in Figure 1) of electronic diaphragm and optical filter; Control circuit is made up of aperture control circuit and motor-drive circuit two parts, wherein the aperture control circuit input is the Artificial Control input, form by four the tunnel, expose or pivot operation, wherein one the tunnel connects MUX MAX306, selects corresponding 0～5V voltage control signal, control signal is reconciled through potentiometer, be connected to the stepper motor driving circuit input, MUX MAX306 outfan is reconciled through potentiometer, is the multi-channel test point; Another road connects the multichannel display lamp respectively by three Bunper assemblies, to show electronic location of aperture state (as shown in Figure 4), stepper motor driving circuit is core with CPUAT89C52, CPU input and A/D converter outfan join, and CPU output directly connects with the driven unit UP-4HB01 of motor by buffer DM7407 output, control step motor counting driving, freedom and guard mode (as shown in Figure 3); Solidified computer-controlled program in the CPU memory, the control method of this program is made up of the following step: flow chart (as shown in Figure 5)
Does step 4 judge that R2 equals 0?, wherein R2 equals 0, and then motor does not move, and preserves the previous state aperture position, and the previous state value is stored among the A, if R2 is not equal to 0, enters next step (104);
Does step 5 judge that R2 is smaller or equal to 2?, wherein R2＜=2 then enter not kinestate of motor, if R2＞2 enter next step (105);
The counter-rotating of step 7 motor is simultaneously with the numerical control system motor movement step number (107) among the R2;
After step 8 motion finishes, preserve current aperture position, the number among the R0 is stored in (108) among the A;
Advantage of the present invention is that the diaphragm drive system only drives electronic diaphragm and optical filter simultaneously by a driver part, and can guarantee that electronic diaphragm and optical filter coordination exercise are correct, puts in place precisely, has simplified drive circuit effectively, saves assembling.
Description of drawings
Fig. 1: be transmission structures schematic diagram of the present invention;
Fig. 2: be actuating device projection of the present invention;
Fig. 3: be actuating device step motor drive electrical schematic diagram of the present invention;
Fig. 4: be the electronic diaphragm control of actuating device of the present invention electrical schematic diagram;
Fig. 5: be control sequence flow chart of the present invention.
Among the figure: 1 motor, 2 pinions, 3 optical filters drive handle, 4 optical filters, 5 pins, 6 electronic diaphragms, 7 diaphragm gears
The specific embodiment
Detailed structure of the present invention and operation principle are illustrated in conjunction with the accompanying drawings: fix a pinion 2 in motor 1 rotating shaft, gear 7 engagements on this gear 2 and the electronic diaphragm 6, to drive electronic diaphragm 6 blade movements, change electronic diaphragm 6 apertures, optical filter 4 is connected with motor 1 rotating shaft, optical filter 4 can freely be rotated around motor 1 rotating shaft, optical filter 4 drives on the handle and has slotted hole, be fixed with pin on the diaphragm gear, cooperate with the optical filter slotted hole, to reach the interlock of optical filter 4 and electronic diaphragm 6, in the singlechip CPU memory, there is control sequence, realize electronic diaphragm and the work of optical filter automatic synchronization in the X line machine image system by control sequence, guarantee the image optimum effect.
Claims (4)
1. electronic diaphragm actuating device in the X line machine image system, it is characterized in that this device is by motor (1), electronic diaphragm (6), the execution unit that optical filter (4) is formed, control circuit and control sequence three parts are formed, wherein on motor (1) axle pinion (2) is housed in the execution unit, diaphragm gear (7) is equipped with in pinion (2) side, pinion (2) and diaphragm gear (7) engagement, diaphragm gear (7) connects with electronic diaphragm (6) blade, on motor (1) axle, connect optical filter (4) simultaneously, optical filter (4) one ends can center on motor (1) axle and freely rotate, optical filter (4) other end is for driving handle (3), drive on the handle (3) and have slotted hole, be fixed with a vertical protrudent pin on the gear of electronic therewith diaphragm (6), be pin feature, realize the coordination linkage of electronic diaphragm (6) and optical filter (4).
2. by electronic diaphragm actuating device in the described a kind of X line machine image system of claim 1, it is characterized in that the aperture control circuit input is the Artificial Control input in the control circuit, form by four the tunnel, expose or pivot operation, wherein one the tunnel connects MUX MAX306, selects corresponding 0～5V voltage control signal, control signal is reconciled through potentiometer, be connected to the stepper motor driving circuit input, MUX MAX306 outfan is reconciled through potentiometer, is the multi-channel test point; Another road connects the multichannel display lamp respectively by three Bunper assemblies, to show the location status of diaphragm.
3. by electronic diaphragm actuating device in the described a kind of X line machine image system of claim 1; it is characterized in that stepper motor driving circuit is a core with CPU AT89C52; CPU input and A/D converter outfan join; and CPU output directly connects with the driven unit UP-4HB01 of motor by buffer DM7407 output, control step motor counting driving, freedom and guard mode.
4. by electronic diaphragm actuating device in the described a kind of X line machine image system of claim 1, it is characterized in that the control method of this program is made up of the following step:
Step 1 initialization: aperture reaches maximum, promptly composes maximum FF (101) to A;
Step 2 is opened the AD conversion, and data are stored in depositor R0 (102);
Step 3 is subtracted each other laststate and current data, and difference is stored in R2, is used to control motor movement step number (103);
Does step 4 judge that R2 equals 0?, wherein R2 equals 0, and then motor does not move, and preserves the previous state aperture position, and the previous state value is stored among the A, if R2 is not equal to 0, enters next step (104);
Does step 5 judge that R2 is smaller or equal to 2?, wherein R2＜=2 then enter not kinestate of motor, if R2＞2 enter next step (105);
Step 6 is laststate and current state aperture size relatively, promptly compares size of data among A and the R0, judges motor positive and inverse, does A＜R0 wherein with the several negates (111) among the R2, judge that number among the R2 is greater than 2? (112), R2 enters motor and does not move less than 2; State before preserving; R2 is greater than 2, and then motor just changes, and with the numerical control system motor movement step number (113) among the R2, enters step 8 simultaneously; If A＞R0 enters next step (106);
The counter-rotating of step 7 motor is simultaneously with the numerical control system motor movement step number (107) among the R2;
After step 8 motion finishes, preserve current aperture position, the number among the R0 is stored in (108) among the A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100204429A CN1264477C (en) | 2004-04-22 | 2004-04-22 | Electric diaphragm driver in X-ray unit imaging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100204429A CN1264477C (en) | 2004-04-22 | 2004-04-22 | Electric diaphragm driver in X-ray unit imaging system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1561910A CN1561910A (en) | 2005-01-12 |
| CN1264477C true CN1264477C (en) | 2006-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100204429A Expired - Fee Related CN1264477C (en) | 2004-04-22 | 2004-04-22 | Electric diaphragm driver in X-ray unit imaging system |
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| CN (1) | CN1264477C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE502006005309D1 (en) * | 2006-07-27 | 2009-12-17 | Deutsches Krebsforsch | IRRADIATOR AND COLLIMATOR |
| JP2011133788A (en) * | 2009-12-25 | 2011-07-07 | Nippon Seimitsu Sokki Kk | Diaphragm device, camera, method of producing the diaphragm device, electronic equipment, and mobile body driving device |
| CN102393599B (en) * | 2011-09-30 | 2013-07-31 | 北京东健宇兴科技有限公司 | X-ray machine imaging device based on automatic diaphragm control |
| CN102902035A (en) * | 2012-11-01 | 2013-01-30 | 中国科学院上海技术物理研究所 | Electrically controlled variable diaphragm dewar for detector |
| CN103900980B (en) * | 2014-04-15 | 2016-10-05 | 安徽蓝盾光电子股份有限公司 | Full automatic calibration control system and scaling method thereof for long light path DOAS gas analyser |
| CN104142526B (en) * | 2014-07-29 | 2016-08-17 | 中国科学院长春光学精密机械与物理研究所 | A kind of planar iris device |
| CN105769238A (en) * | 2014-12-24 | 2016-07-20 | 丹东市科大仪器有限公司 | Built-in guide-rail-type light filter switching device of X-ray beam limiting device |
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2004
- 2004-04-22 CN CNB2004100204429A patent/CN1264477C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1561910A (en) | 2005-01-12 |
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Owner name: PHILIPS ( CHINA )INVESTMENT CO., LTD. Free format text: FORMER OWNER: DONGRUI DIGITAL MEDICAL SYSTEM CO., LTD., SHENYANG Effective date: 20050513 |
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Effective date of registration: 20050513 Address after: 200070, 218 West Tianmu Road, Shanghai, 20-22 Applicant after: Philip (China) Investment Co., Ltd. Address before: 110179 Liaoning city of Shenyang province Shenyang Hunnan hi tech Industrial Development Zone, East Software Park Applicant before: Shenyang Dongruan Digital Medical System Co., Ltd. |
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Owner name: PHILIPS AND NEUSOFT MEDICAL SY Free format text: FORMER OWNER: PHILIPS ( CHINA )INVESTMENT CO., LTD. Effective date: 20050805 |
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Effective date of registration: 20050805 Address after: The 110179 century Shenyang Hunnan New District Road No. 16 Applicant after: Dongruan Philips Medical Equipment and System Co., Ltd. Address before: 200070, 218 West Tianmu Road, Shanghai, 20-22 Applicant before: Philip (China) Investment Co., Ltd. |
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Owner name: DONGRUAN MEDICAL SYSTEMS CO., LTD., SHENYANG Free format text: FORMER OWNER: DONGRUAN PHILIPS MEDICAL EQUIPMENT AND SYSTEM CO., LTD. Effective date: 20140214 |
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Effective date of registration: 20140214 Address after: Hunnan New Century Road 110179 Shenyang city of Liaoning Province, No. 16 Patentee after: Dongruan Medical Systems Co., Ltd., Shenyang Address before: Hunnan New Century Road 110179 Shenyang city of Liaoning Province, No. 16 Patentee before: Dongruan Philips Medical Equipment and System Co., Ltd. |
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Address after: 110179 No. 177-1 Innovation Road, Hunnan District, Shenyang City, Liaoning Province Patentee after: DongSoft Medical System Co., Ltd. Address before: 110179 No. 16 Century Road, Hunnan New District, Shenyang City, Liaoning Province Patentee before: Dongruan Medical Systems Co., Ltd., Shenyang |
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