CN2569512Y - Automatic controller for X-ray machine brightness - Google Patents
Automatic controller for X-ray machine brightness Download PDFInfo
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- CN2569512Y CN2569512Y CN02274608U CN02274608U CN2569512Y CN 2569512 Y CN2569512 Y CN 2569512Y CN 02274608 U CN02274608 U CN 02274608U CN 02274608 U CN02274608 U CN 02274608U CN 2569512 Y CN2569512 Y CN 2569512Y
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Abstract
The utility model relates to an automatic controller for X-ray machine brightness, which belongs to the technical field of medical equipment. The utility model adopts brightness sampling, beam limiting device feedback and vision feedback to process to form automatic control signals for brightness. The utility model is composed of a brightness collecting circuit and an automatic control circuit for brightness. A brightness signal LIGHT obtained by a sampling plate is isolated, amplified and stacked by an automatic control processing plate module III for brightness, and a PLIGHT is obtained. Simultaneously, horizontal and vertical position feedback signals for a beam limiting device are outputted to the automatic controller for brightness by the beam limiting device and are respectively isolated, zeroed and amplified by automatic control processing plate modules for brightness I, II, and a PHF and a PVF are obtained. The PLIGHT, the PHF and the PVF signals are inputted to an automatic control processing plate module for brightness IV, and an ABS is obtained by the calculation of the module IV; then an ABS-OUT finally outputted by the automatic controller for brightness is obtained by the isolation of a module V. The utility model realizes high-speed brightness collection and compensation adjustment for more feedbacks, and X-ray image brightness for parts of an examined person on a monitor and a display observed by a doctor is consistent. The utility model has the advantage of wide dynamic adjusting range for brightness.
Description
Affiliated technical field
The utility model belongs to technical field of medical instruments, particularly a kind of X-ray machine automatic brightness and controller.
Background technology
Brightness automatic stabilisation technology is a utilization X-ray machine during to patient, and the brightness of the monitor that guarantees to observe the doctor, the X line image of checked each position on the display is consistent, can thick difference not make image flickering because of examinee's body.Stable image brightness can correctly be gathered examinee's information, reduces the X-ray receiving amount of examinee's X line, guarantees doctor's quality of diagnosis, reduces the fatigue of doctor's eye.
The brightness automatic stabilisation technological system circuit control principle that adopts in the existing X line machine is:
(1) signals collecting: adopt PMT (photomultiplier), photodiode, vision signal.
(2) reponse system: part has the beam-defining clipper feedback, but the algorithm effects of compensation is general.
The problem that it exists is:
(1) signals collecting part if use PMT, because of its volume is big, is merely able to one, get light signal like this and will get light, or complicated in mechanical structure (the scheduling complexity is installed) with little prism or loxosis, or loxosis get light then image the dosage deviation is arranged.
If the use photodiode, the performance index of the general element that uses are low, and dynamic range is little.
If the use vision signal is because of its free delay, so in the high-frequency and high-voltage generator system in modern times, the shortcoming of this mode is too big.
(2) reponse system: the design of many brightness automatic stabilisation technological systems all is mini system independently, is not easy the interface of feedbacks such as the beam-defining clipper and three visuals field.
Summary of the invention
Problem at existing X-ray machine brightness automatic control technology existence, the utility model provides a kind of X-ray machine automatic brightness and controller with high-speed luminance collection, various feedback compensation adjustment, the brightness of X line image that this device makes the doctor observe each position of the examinee on the monitor display is consistent, can be because of examinee's body the different images that make in position of thick difference, visual field difference and beam-defining clipper flickering, and the luminance dynamic adjusting range is big.
The utility model is the systematization design, has adopted accurately image brightness signal collection at a high speed, and the various feedback compensation adjustment is with the perfect scheme of image capturing system isolation.
The utility model is made up of two parts: the automatic control processing circuit of brightness Acquisition Circuit and brightness.The brightness Acquisition Circuit uses high performance photodiode to extract near the front end cutout screen of image amplifier, and is to adopt two photodiodes samplings, has guaranteed truly, at a high speed.Simultaneously to outputing to the automatic control processing circuit of brightness after this signal summation, the amplification.The automatic control processing circuit of brightness is handled feedback signal, the luminance signal of beam-defining clipper, and they are isolated, return to zero and amplify.Carry out computing afterwards, remove luminance signal after the vertical and horizontal feedback signal of beam-defining clipper is multiplied each other, buffering outputs to the high voltage interface plate J7 input of high pressure generator, and high pressure generator is controlled.
Adopt the light sampling rate to want fast with the feedback speed of sample video, for the high-frequency and high-voltage generator in modern times, the time delay of Millisecond is influential for picture quality.The sampling of two photodiodes has guaranteed that sampled signal has reflected the situation of image brightness of the cutout screen of image amplifier really, than the general pattern of only taking a sample obvious improvement has been arranged, removed because the examinee moves the error of the X line dosage that brings from a tilted direction.
As feedback, through accurate Calculation, it is only relevant with the useful picture signal (perhaps image area) that the doctor observes to make brightness control output signal automatically with the horizontal vertical positional information of beam-defining clipper.Like this, the variation of the dosage of high pressure is only relevant with the brightness of useful image, is not subjected to the influence of beam-defining clipper position.Remove the influence of beam-defining clipper in the image brightness sampling, guarantee that image brightness can not depend on the position of beam-defining clipper.
Image intensifier tube is when switching the visual field, if hypothesis high pressure dosage is constant, then image brightness can deepening.Therefore, the feedback in three visuals field has then solved this problem, and when three visuals field were switched, the brightness stability of image was constant.
Automatic brightness and controller is to do closed loop feedback with the high pressure generator system of X line, in order to guarantee the quality of image, brightness automatically control is isolated with image capturing system, also isolates with the high pressure generator system simultaneously, makes the work of high pressure generator system can the interfering picture system.
The utility model is a closed-loop system.Its course of work is when the doctor does perspective to patient, different position thickness differences, the brightness difference of then same dosage hypograph, sampling plate is gathered the brightness of image amplifier cutout screen, outputs to the automatic control and treatment plate of brightness, the automatic control and treatment buttress of brightness according to current laterally, the vertical position of beam-defining clipper, image amplifier work as forward view, adopt a rational algorithm, calculate an output voltage, give high pressure generator.When position was thick, output voltage was low, was lower than the setting voltage of high pressure generator inside, and high pressure generator is heightened dosage, and when position approached, the output voltage height was higher than the setting voltage of high pressure generator inside, and high pressure generator is turned down dosage; Like this, the brightness that guarantees the image that the doctor finally sees is consistent.
The utility model has been realized high-speed luminance collection, various feedback compensation adjustment.The feedback compensation of beam-defining clipper, the feedback compensation in three visuals field are arranged.The brightness of X line image that makes the doctor observe each position of the examinee on monitor, the display is consistent, can be because of examinee's body the different images that make in position of thick difference, visual field difference and beam-defining clipper flickering, and the luminance dynamic adjusting range is big.
Description of drawings
Fig. 1 is the utility model signal flow block diagram,
Fig. 2 is the utility model luminance detection circuit schematic diagram,
Fig. 3 is the utility model signal processing circuit schematic diagram.
Embodiment
Consult Fig. 1, the utility model is made up of brightness Acquisition Circuit (sampling plate) and brightness automatic control circuit (ABS disposable plates) two parts.Two parts circuit theory is consulted Fig. 2, Fig. 3:
Acquisition Circuit (sampling plate)
By photoelectric diode D3, D4, signaling conversion circuit U8, U9, emitter follower U7C, U7B, adder operation circuit U10D, voltage adjust U10B and penetrate with follower U10A and form.Adopt high performance photodiode to extract and adopt two photoelectric diode D3, D4 samplings near the front end cutout screen of image amplifier, realize converting the current signal of photodiode to voltage signal through U8, U9 then, U7C wherein, U7B are emitter followers, realize voltage follow, U10D is the voltage summation of an adder operation circuit with D3, D4 output, U10B adjusts output voltage amplitude, and U10A realizes penetrating with output, obtains the output signal (Light) of sampling plate.
Brightness automatic control circuit (the automatic control and treatment plate of brightness) is made up of six modules:
1, isolation, zeroing, the amplification module of horizontal beam-defining clipper position feed back signal,
2, isolation, zeroing, the amplification module of vertical beam-defining clipper position feed back signal,
3, the isolation of sampling plate output signal, stack, amplification module,
4, computing circuit module,
5, the isolation module of output signal is controlled in brightness automatically,
6, input/output signal modular plug.
The automatic control and treatment plate module 1 of brightness: the input signal HF of this module is horizontal beam-defining clipper position feed back signal, and to the automatic control and treatment plate of brightness, U21A is linear optical coupling LOC211 by XP2108, and U11A, U21A form circuit linearity insulating circuit; U31A is an emitter follower, and U22A realizes zeroing by adder operation circuit and amplifies, adjusts W4 and can change its multiplication factor; U30A is the amplifying circuit of a negative terminal input, at the different visual field of image amplifier, by the multiplication factor of relay K 1, K2 switching U30A, reaches the purpose of brightness stability under the different visuals field.U22B, D9, R42, W6 form clamp circuit, and the change in voltage of beam-defining clipper position feed back signal is limited within the scope of field of view, adjust the output valve that W6 can change voltage behind the clamp.The output signal of this module is PHF.
The automatic control and treatment plate module 2 of brightness: the vertical beam-defining clipper position feed back signal of the input signal VF of this module.The principle of the principle of this module and module 1 is identical, and the output signal of this module is PVF.
The automatic control and treatment plate module 3 of brightness: the input signal of this module is that LIGHT is the luma samples signal that sampling plate outputs to the automatic control and treatment plate of brightness.U19B is linear optical coupling LOC211, and U29A, U19B form the linear light buffer circuit, and U20B is an emitter follower, and U20A is the adder operation circuit of an anode input, realizes amplifying and stack.The signal of this module output is PLIGHT.
The automatic control and treatment plate module 4 of brightness: the input signal of this module is respectively module 2,3,4 output PHF, and PVF, PLIGHT, U14 are multipliers, and U15,16 forms divider, and calculated result promptly is the output signal ABS of module.
The automatic control and treatment plate module 5 of brightness: the input signal of this module is the output ABS of module 4, U19A is linear optical coupling LOC211, U18A, U19A forms circuit linearity insulating circuit, U29B is an emitter follower, realization is penetrated with output, and the output of this module promptly is the final output ABS-OUT of full luminance automatic control equipment.
The automatic brightness and controller workflow: sampling plate is gathered the brightness of image amplifier cutout screen by 2 photodiodes, obtain luminance signal LIGHT, isolation by the automatic control and treatment plate module 3 of brightness, amplify, stack, obtain PLIGHT, simultaneously, output to the horizontal of automatic brightness and controller by beam-defining clipper, vertically the beam-defining clipper position feed back signal is respectively by the automatic control and treatment plate module 1 of brightness, 2 isolation, zeroing, amplify, obtain PHF, PVF, these 3 signal (PLIGHT, PHF, PVF) be input to the module 4 of the automatic control and treatment plate of brightness, computing by module 4 obtains ABS, and the isolation through module 5 obtains the final output ABS-OUT of automatic brightness and controller again.
Signal definition
(1) input:
XP2108:HF: horizontal beam-defining clipper position feed back signal
VF: vertical beam-defining clipper position feed back signal
C+15V: the supply power voltage+15V of position feed back signal
C-15V: the supply power voltage-15V of position feed back signal
CGND: the ground of position feed back signal
XP2109:9INCH: 9 cun visual field feedbacks of image amplifier
6INCH: 6 cun visual field feedbacks of image amplifier
COM: common port
XP2110:LIGHT: sampling plate outputs to the luminance signal of the automatic control and treatment plate of brightness
HGND: the ground of luminance signal
XP2106:ABS-OUT: the output signal of the automatic control and treatment plate of brightness (sending high pressure generator, the increase and decrease of control dosage)
H+12V: high pressure generator+12V
H-12V: high pressure generator-12V
HGND: the ground of high pressure generator
(2) connect defined signal between each module:
PHF: laterally the beam-defining clipper position feed back signal is through isolating zeroing, the output behind the amplification module;
PVF: vertically the beam-defining clipper position feed back signal is through isolating zeroing, the output behind the amplification module;
The LIGHT sampling plate outputs to the luminance signal of the automatic control and treatment plate of brightness;
PLIGHT: sampling plate outputs to the output of luminance signal behind isolation, stack, amplification module of the automatic control and treatment plate of brightness;
ABS: the output of computing circuit;
ABS-OUT: the output behind the output signal isolation module, the i.e. final output of the automatic control and treatment plate of brightness.
Use the utility model, the utility model is inserted in the X-ray machine system, sampling plate places between image amplifier cutout screen and the CCD camera, and disposable plates places in the operating desk.Automatic brightness and controller is the part of this system, for system provides a brightness feedback signal that is directly proportional with image brightness.For whole system, be a closed-loop system.This closed loop is realized by high pressure generator, the doctor can carry out brightness settings on high pressure generator, and receive the brightness feedback signal that automatic brightness and controller is sent here, if any difference, can adjust the output of high pressure generator automatically, change image brightness, make setting consistent, realize closed-loop control with feedback.The concrete course of work is as follows: when the doctor does perspective to patient, different position thickness differences, the brightness difference of then same dosage hypograph, sampling plate is gathered the brightness of image amplifier cutout screen, output to the automatic control and treatment plate of brightness, the automatic control and treatment buttress of brightness according to current laterally, the vertical position of beam-defining clipper, image amplifier work as forward view, adopt a rational algorithm, calculate an output voltage, give high pressure generator, when position was thick, output voltage was low, be lower than the setting voltage of high pressure generator inside, high pressure generator is heightened dosage, when position approaches, and the output voltage height, be higher than the setting voltage of high pressure generator inside, high pressure generator is turned down dosage; Like this, the brightness that guarantees the image that the doctor finally sees is consistent.
Claims (6)
1, a kind of X-ray machine automatic brightness and controller, it is characterized in that adopting luma samples, the beam-defining clipper feedback, the visual field is fed back to handle and is formed the auto brightness control signal, this device is made up of brightness Acquisition Circuit and brightness automatic control circuit two parts, the brightness Acquisition Circuit is by photodiode, signaling conversion circuit, emitter follower, adder operation circuit, voltage adjustment and penetrate with follower and form, adopt two photodiode samplings, convert current signal to voltage signal through signaling conversion circuit then, realize voltage follow by emitter follower, by the voltage summation of adder operation circuit with two photodiode outputs, through adjusting voltage magnitude, by penetrating, obtain the luminance signal of sampling plate output with follower output; The brightness automatic control circuit is by the isolation of horizontal limiter of speed position feed back signal, zeroing, amplification module I, the vertically isolation of limiter of speed position feed back signal, zeroing, amplification module II, the isolation of sampling plate output signal, stack, amplification module III, computing circuit module I V, the isolation module V of output signal is controlled in brightness automatically, six modules of input/output signal modular plug VI are formed, obtain luminance signal LIGHT by sampling plate, isolation by the automatic control and treatment plate module of brightness III, amplify, stack, obtain PLIGHT, simultaneously, output to the horizontal of automatic brightness and controller by beam-defining clipper, vertically the beam-defining clipper position feed back signal is respectively by the automatic control and treatment plate module of brightness I, the isolation of II, zeroing, amplify, obtain PHF and PVF, PLIGHT, PHF, PVF3 signal is input to the module I V of the automatic control and treatment plate of brightness, computing by module I V obtains ABS, and the isolation through module V obtains the final output ABS-OUT of automatic brightness and controller again.
2, X-ray machine automatic brightness and controller according to claim 1 is characterized in that the module I of said brightness automatic control circuit comprises:
The circuit linearity insulating circuit that U11A, U21A form,
The U31A emitter follower,
U22A adder operation circuit and adjustable rectification become the W4 of multiplication factor,
U30A negative terminal amplifying circuit,
K1, K2 switch the relay of U30A multiplication factor,
The clamp circuit that U23B, D9, R42, W6 form, the W6 of voltage output value behind the adjustable rectification change clamp.
3, X-ray machine automatic brightness and controller according to claim 1 is characterized in that the module ii of said brightness automatic control circuit comprises:
The circuit linearity insulating circuit that U11B, U21B form,
The U31B emitter follower,
U23A adder operation circuit and adjustable rectification become the W4 of multiplication factor,
U30B bears amplifying circuit,
K1, K2 switch the relay of U30B multiplication factor,
The clamp circuit that U23B, D10, R50, W7 form, the W6 of voltage output value behind the adjustable rectification change clamp.
4, X-ray machine automatic brightness and controller according to claim 1 is characterized in that the module ii I of said brightness automatic control circuit comprises:
The photoelectric isolating circuit that U29A, U19B form,
The U20B emitter follower,
The adder operation circuit of U20A anode input.
5, X-ray machine automatic brightness and controller according to claim 1 is characterized in that the module I V of said brightness automatic control circuit comprises:
The U14 multiplier,
The divider that U15, U16 form.
6, X-ray machine automatic brightness and controller according to claim 1 is characterized in that the module V of said brightness automatic control circuit comprises:
The circuit linearity insulating circuit that U18A, U19A form,
The U29B emitter follower.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02274608U CN2569512Y (en) | 2002-08-08 | 2002-08-08 | Automatic controller for X-ray machine brightness |
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| Application Number | Priority Date | Filing Date | Title |
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| CN02274608U CN2569512Y (en) | 2002-08-08 | 2002-08-08 | Automatic controller for X-ray machine brightness |
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| CN02274608U Expired - Lifetime CN2569512Y (en) | 2002-08-08 | 2002-08-08 | Automatic controller for X-ray machine brightness |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101019471B (en) * | 2004-07-20 | 2011-01-19 | 加拿大通信与动力工业公司 | Active dose reduction device and method |
| CN104105444A (en) * | 2012-02-10 | 2014-10-15 | 株式会社岛津制作所 | Radiation image pickup device |
| CN104287750A (en) * | 2013-07-16 | 2015-01-21 | 南京普爱射线影像设备有限公司 | X-ray machine automatic perspective method and device based on embedded software |
| CN108852397A (en) * | 2018-08-01 | 2018-11-23 | 南京普爱医疗设备股份有限公司 | A kind of intelligent pulse converter plant for X-ray production apparatus |
| CN108924432A (en) * | 2018-06-12 | 2018-11-30 | 沈阳东软医疗系统有限公司 | A kind of bearing calibration of deviation of signal, device and equipment |
| CN109965891A (en) * | 2017-12-27 | 2019-07-05 | 康达洲际医疗器械有限公司 | ABS automatically-perspective system |
| CN110099502A (en) * | 2019-04-23 | 2019-08-06 | 上海联影医疗科技有限公司 | A kind of self-adaptation control method and system of X-ray imaging device |
| US11957499B2 (en) | 2019-04-23 | 2024-04-16 | Shanghai United Imaging Healthcare Co., Ltd. | Systems, methods, devices and storage mediums for obtaining a radiographic image |
-
2002
- 2002-08-08 CN CN02274608U patent/CN2569512Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101019471B (en) * | 2004-07-20 | 2011-01-19 | 加拿大通信与动力工业公司 | Active dose reduction device and method |
| CN104105444A (en) * | 2012-02-10 | 2014-10-15 | 株式会社岛津制作所 | Radiation image pickup device |
| CN104105444B (en) * | 2012-02-10 | 2017-03-22 | 株式会社岛津制作所 | Radiation image pickup device |
| CN104287750A (en) * | 2013-07-16 | 2015-01-21 | 南京普爱射线影像设备有限公司 | X-ray machine automatic perspective method and device based on embedded software |
| CN109965891A (en) * | 2017-12-27 | 2019-07-05 | 康达洲际医疗器械有限公司 | ABS automatically-perspective system |
| CN108924432A (en) * | 2018-06-12 | 2018-11-30 | 沈阳东软医疗系统有限公司 | A kind of bearing calibration of deviation of signal, device and equipment |
| CN108924432B (en) * | 2018-06-12 | 2021-01-05 | 东软医疗系统股份有限公司 | Method, device and equipment for correcting signal deviation |
| CN108852397A (en) * | 2018-08-01 | 2018-11-23 | 南京普爱医疗设备股份有限公司 | A kind of intelligent pulse converter plant for X-ray production apparatus |
| CN110099502A (en) * | 2019-04-23 | 2019-08-06 | 上海联影医疗科技有限公司 | A kind of self-adaptation control method and system of X-ray imaging device |
| US11957499B2 (en) | 2019-04-23 | 2024-04-16 | Shanghai United Imaging Healthcare Co., Ltd. | Systems, methods, devices and storage mediums for obtaining a radiographic image |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: PHILIPS ( CHINA )INVESTMENT CO., LTD. Free format text: FORMER OWNER: DONGRUI DIGITAL MEDICAL SYSTEM CO., LTD., SHENYANG Effective date: 20050114 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20050114 Address after: 200070, 218 West Tianmu Road, Shanghai, 20-22 Patentee after: Philip (China) Investment Co., Ltd. Address before: 110179 Liaoning city of Shenyang province Shenyang Hunnan hi tech Industrial Development Zone, East Software Park Patentee before: Shenyang Dongruan Digital Medical System Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: PHILIPS AND NEUSOFT MEDICAL SY Free format text: FORMER OWNER: PHILIPS ( CHINA )INVESTMENT CO., LTD. Effective date: 20050805 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20050805 Address after: The 110179 century Shenyang Hunnan New District Road No. 16 Patentee after: Dongruan Philips Medical Equipment and System Co., Ltd. Address before: 200070, 218 West Tianmu Road, Shanghai, 20-22 Patentee before: Philip (China) Investment Co., Ltd. |
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| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120808 Granted publication date: 20030827 |