CN103054594A - Automatic trigger exposure circuit of flat panel detector - Google Patents
Automatic trigger exposure circuit of flat panel detector Download PDFInfo
- Publication number
- CN103054594A CN103054594A CN2012105369422A CN201210536942A CN103054594A CN 103054594 A CN103054594 A CN 103054594A CN 2012105369422 A CN2012105369422 A CN 2012105369422A CN 201210536942 A CN201210536942 A CN 201210536942A CN 103054594 A CN103054594 A CN 103054594A
- Authority
- CN
- China
- Prior art keywords
- flat panel
- circuit
- panel detector
- discharge circuit
- exposure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Measurement Of Radiation (AREA)
Abstract
The invention provides an automatic trigger exposure circuit of a flat panel detector. The automatic trigger exposure circuit comprises photoelectric sensors of a plurality of parallelly-connected photoelectric reception diodes, a positive input end, a negative input end, a secondary operational amplifying circuit and a comparison circuit. The positive input end and the negative input end are connected to the photoelectric sensors and used for respectively connecting positive electrodes and negative electrodes of the photoelectric sensors into a primary operational amplifier and performing differential amplification to electrical signals of the photoelectric sensors, the secondary operational amplifying circuit is connected to the primary operational amplifier and used for performing amplification in the same direction to a voltage signal output by the primary operational amplifier, and the comparison circuit is connected to the secondary operational amplifying circuit and used for comparing the voltage signal output by the secondary operational amplifying circuit and reference voltage and outputting a pulse signal for controlling exposure of the flat panel detector when the voltage signal is larger than the reference voltage. The automatic trigger exposure circuit adopts a mode that plurality of photoelectric reception diodes are parallelly connected, can also finish exposure control under very low exposure dose, has very high sensitivity, adopts differential amplification and can effectively reduce interference of a system to the signals output by the photoelectric sensors and improve signal to noise ratio.
Description
Technical field
The invention belongs to the medical electronics field, particularly relate to a kind of flat panel detector and automatically trigger exposure circuit.
Background technology
Since nineteen ninety-five is released First flat panel detector (flat panel detector) equipment, along with dull and stereotyped Detection Techniques in recent years take off, all living creatures' business men and research worker have been taken the Flat digital X-ray detector the clinical use to from laboratory, because the high sensitivity that flat panel detector has, the advantages such as low distortion of wide dynamic range and digitized image, the user of hospital is on the increase, also trend is universal gradually for plate technique, and Flat digital x-ray imaging technology becomes the core force who causes the revolution of radiodiagnosis image.
In the research and development and production process of flat panel detector, dull and stereotyped Detection Techniques can be divided into directly and indirect two classes.Dull and stereotyped Detection Techniques have obtained the development of leap in recent years; because directly the research and development of the flat panel detector of change type are comparatively complicated; early stage laboratory research can easily not be used for commercially producing; and the flat panel detector of indirect conversion formula is comparatively convenient and easy to commercial size production by research and development; so what great majority adopted in the early stage flat panel detector new product all is the indirect conversion mode; but along with the breakthrough progress of in recent years directly changing the flat panel detector research and development; its technology is ripe gradually, and a lot of companies have released one after another and had the more flat panel detector system product of the direct change type of high image quality.
The flat-panel detector structure of indirect conversion formula mainly is to add the amorphous silicon layer with photoelectric receiving diode effect by scintillation material or fluorescent material layer to add tft array and consist of.Its principle be scintillator or fluorescent material layer after the X ray exposure, the x ray photons is converted to visible light, then become electric image signal by the amorphous silicon layer with photoelectric receiving diode effect, obtain at last digital picture.
The exposure of X flat panel detector has external trigger and automatic exposure dual mode, the external trigger mode refers to the exposure of high tension generator control flat panel detector, the mode of internal trigger is by scintillation material X ray to be converted to visible light, radiation of visible light photoelectric sensor output current, cooperate the last outputs level signals of interlock circuit, detector is controlled exposure according to this level signal.
The working method of external trigger requires flat panel detector to be connected with high tension generator, have the automatic exposure control function flat panel detector just can and high tension generator between connect, on-line operation is simple and convenient.
Auto-exposure control is divided into external and built-in, external be exactly photoelectric sensor and interlock circuit in the outside of flat panel detector, photoelectric sensor is placed on the surface of detector, level signal is connected to detector by cable.Adopt external exposure control, must carry out software processes to the flat panel detector photosensor region, the impact that the filtering photoelectric sensor causes image, built-in exposure control photoelectric sensor is placed on TFT following on detector image-forming without any impact, but because TFT and structural member have absorbed most X ray, the light that photoelectric sensor receives seldom, relative output current signal is also very little.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of flat panel detector automatically to trigger exposure circuit, be used for solving flat panel detector of the prior art and automatically trigger exposure circuit photoperceptivity is weak under the low dose exposure, output current is too small and cause the lower problem of sensitivity.
Reach for achieving the above object other relevant purposes, the invention provides a kind of flat panel detector and automatically trigger exposure circuit, comprise at least:
Photoelectric sensor comprises the photoelectric receiving diode of a plurality of parallel connections, is used for converting optical signal to the signal of telecommunication;
The one-level discharge circuit is connected in described photoelectric sensor, is used for the signal of telecommunication of described photoelectric sensor output is carried out differential amplification;
The secondary discharge circuit is connected in described one-level discharge circuit, is used for the voltage signal of described one-level discharge circuit output is amplified in the same way;
Comparison circuit is connected in described secondary discharge circuit, is used for voltage signal and the reference voltage of more described secondary discharge circuit output, and described voltage signal during greater than described reference voltage output be used for the pulse signal of control flat panel detector exposure.
Automatically trigger a kind of preferred version of exposure circuit as flat panel detector of the present invention, the photoelectric receiving diode of a plurality of parallel connections described in the described photoelectric sensor becomes electric current to transform light energy simultaneously.
Automatically trigger a kind of preferred version of exposure circuit as flat panel detector of the present invention, described photoelectric sensor comprises the photoelectric receiving diode of 1 ~ 10 parallel connection.
Automatically trigger a kind of preferred version of exposure circuit as flat panel detector of the present invention, described photoelectric sensor surface is coated with for the scintillation material that X ray is converted to visible light.
Automatically trigger a kind of preferred version of exposure circuit as flat panel detector of the present invention, described one-level discharge circuit is instrument amplifier, the positive input terminal of described instrument amplifier is connected in the positive pole of described photoelectric sensor, and the instrument amplifier negative input end accesses the negative pole of described photoelectric sensor.
Further, described secondary discharge circuit is amplifier in the same way, and the positive input terminal of described in the same way amplifier is connected in the outfan of described one-level discharge circuit.
Automatically trigger a kind of preferred version of exposure circuit as flat panel detector of the present invention, be connected with a limiter diode between described one-level discharge circuit and the secondary discharge circuit, be used for the voltage signal of described one-level discharge circuit output is carried out amplitude limit, the positive pole of described limiter diode is connected in the outfan of described one-level discharge circuit, minus earth.
Further, described limiter diode is Schottky diode.
Automatically trigger a kind of preferred version of exposure circuit as flat panel detector of the present invention; also be connected with a pressure limiting diode that is used for the voltage signal of described secondary discharge circuit output is carried out voltage-limiting protection between described secondary discharge circuit and the described comparison circuit; the positive pole of described pressure limiting diode is connected in the outfan of described secondary discharge circuit, and negative pole is connected in positive supply.
Further, described pressure limiting diode is Schottky diode.
As mentioned above, the invention provides a kind of flat panel detector and automatically trigger exposure circuit, comprising: comprise the photoelectric receiving diode of a plurality of parallel connections, be used for optical signal is converted to the photoelectric sensor of the signal of telecommunication; Be connected in described photoelectric sensor, be used for the signal of telecommunication of described photoelectric sensor output is carried out the one-level discharge circuit of differential amplification; Be connected in described one-level discharge circuit, be used for the secondary discharge circuit that the voltage signal that described one-level discharge circuit is exported is amplified in the same way; Be connected in described secondary discharge circuit, be used for voltage signal and the reference voltage of more described secondary discharge circuit output, and described voltage signal during greater than described reference voltage output be used for the comparison circuit of the pulse signal of control flat panel detector exposure.The present invention adopts the mode of a plurality of photoelectric receiving diode parallel connections, under low-down exposure dose, also can finish exposure control, have very high sensitivity, adopt differential amplification, can effectively reduce system to the interference of photoelectric sensor output signals, improve signal to noise ratio.
Description of drawings
Fig. 1 is shown as the structural representation of built-in auto-exposure control flat panel detector of the present invention.
Fig. 2 is shown as the basic circuit structure schematic diagram that flat panel detector of the present invention triggers exposure circuit automatically.
Fig. 3 is shown as the basic circuit structure schematic diagram that flat panel detector of the present invention has the automatic triggering exposure circuit of amplitude limiter circuit.
Fig. 4 is shown as the particular circuit configurations schematic diagram that flat panel detector of the present invention has the automatic triggering exposure circuit of amplitude limiter circuit.
The element numbers explanation
13 structural members
12 TFT plates
11 carbon plates
10 automatic exposure control circuits
101 photoelectric sensors
1011 photoelectric receiving diodes
102 one-level discharge circuits
103 secondary discharge circuits
104 comparison circuits
105 exposure control units
106 limiter diodes
107 pressure limiting diodes
The specific embodiment
Below by specific instantiation explanation embodiments of the present invention, those skilled in the art can understand other advantages of the present invention and effect easily by the disclosed content of this description.The present invention can also be implemented or be used by the other different specific embodiment, and the every details in this description also can be based on different viewpoints and application, carries out various modifications or change under the spirit of the present invention not deviating from.
See also Fig. 1 ~ Fig. 4.Need to prove, the diagram that provides in the present embodiment only illustrates basic conception of the present invention in a schematic way, satisfy only show in graphic with the present invention in relevant assembly but not component count, shape and size drafting when implementing according to reality, kenel, quantity and the ratio of each assembly can be a kind of random change during its actual enforcement, and its assembly layout kenel also may be more complicated.
Such as Fig. 1 ~ shown in Figure 4, the present embodiment provides a kind of flat panel detector automatically to trigger exposure circuit, described automatic exposure control circuit adopts unique built-in mode, be described automatic exposure control circuit be placed on flat panel detector inside as shown in Figure 1, described flat panel detector comprises structural member 13, is covered in the TFT plate 12 on the described structural member, the automatic exposure control circuit 10 that is covered in the carbon plate 11 on the described TFT plate and is installed in said structure inside.
Such as Fig. 2 ~ shown in Figure 4, described automatic exposure control circuit comprises at least:
One-level discharge circuit 102 is connected in described photoelectric sensor 101, is used for the electrical signal conversion of described photoelectric sensor 101 outputs is become voltage signal and it is carried out differential amplification;
Described photoelectric sensor 101 surface-coated are useful on the scintillation material that X ray is converted to visible light, and described scintillation material is the materials such as cesium iodide.In order to guarantee sensitive volume, in the process of exposure, the photoelectric receiving diode of a plurality of parallel connections in the described photoelectric sensor 101 converts optical signal to current signal simultaneously, in the present embodiment, described photoelectric sensor 101 comprises the photoelectric receiving diode 1011 of 1 ~ 10 parallel connection, the sensitivity of adopting the mode of multichannel photoelectric receiving diode 1011 parallel connections can effectively improve photoelectric sensor 101, flat panel detector of the present invention still can be controlled exposure control unit 105 exposures of flat panel detector under less than the dosage of 1.5nGy on the surface.
Described one-level discharge circuit 102 is instrument amplifier, the positive input terminal of described instrument amplifier is connected in the positive pole of described photoelectric sensor 101, negative input end is connected in the negative pole of described photoelectric sensor 101, adopt differential amplification can reduce system to the interference of photoelectric sensor 101 output signals, improve signal to noise ratio.Described secondary discharge circuit 103 is amplifier in the same way, the positive input terminal of described in the same way amplifier is connected in the outfan of described one-level discharge circuit 102, negative input end is connected in an external power source, and the voltage signal that described in the same way amplifier is used for further described instrument amplifier being inputted amplifies.
In the present embodiment, be connected with a limiter diode between described one-level discharge circuit 102 and the secondary discharge circuit 103, be used for the voltage signal of described one-level discharge circuit 102 outputs is carried out amplitude limit, the positive pole of described limiter diode is connected in the outfan of described one-level discharge circuit 102, minus earth.In the present embodiment, described limiter diode adopts Schottky diode, can prevent heavy dose of exposure amplifier saturation.
Also be connected with a pressure limiting diode that is used for the voltage signal of described secondary discharge circuit 103 outputs is carried out voltage-limiting protection between described secondary discharge circuit 103 and the described comparison circuit 104; the positive pole of described pressure limiting diode is connected in the outfan of described secondary discharge circuit 103; negative pole is connected in positive supply; described pressure limiting diode can prevent from exporting supersaturation; in the present embodiment, described pressure limiting diode is Schottky diode.
In order to further specify the effect of automatic exposure control circuit of the present invention, see also Fig. 4, as shown in the figure, photoelectric sensor 101 output currents of the present invention are I, equivalent resistance is R1, described instrument amplifier gain is A1, and the secondary in the same way gain of discharge circuit is A2, the voltage Vo2=I*R1*A1*A2 of the output of secondary discharge circuit 103.The voltage Vo2 of output and the reference voltage Vf of described comparison circuit 104 are through outputs level signals after relatively, detector is according to level signal control exposure, namely as Vo2 during greater than described reference voltage Vf, described comparison circuit 104 output high level, exposure control unit 105 exposures of control flat panel detector, as Vo2 during less than described reference voltage Vf, described comparison circuit 104 output low levels, the exposure control unit 105 of described flat panel detector does not expose.In a concrete implementation process, described photoelectric sensor 101 is in 0 ~ 60 degree centigrade temperature range, and the scope of its internal resistance R1 is 10M ~ 100M, and the instrument amplifier gain is 100, and the gain of secondary discharge circuit 103 is 60, is 6*10 for the gain ranging of system
10~ 6*10
12, very high through the sensitivity of reality test this programme, under the dosage of flat panel detector surface less than 1.5nGy, still can control exposure under the room temperature.
In sum, the invention provides a kind of flat panel detector and automatically trigger exposure circuit, comprising: comprise the photoelectric receiving diode 1011 of a plurality of parallel connections, be used for optical signal is converted to the photoelectric sensor 101 of the signal of telecommunication; Be connected in described photoelectric sensor 101, be used for the signal of telecommunication of described photoelectric sensor 101 outputs is carried out the one-level discharge circuit 102 of differential amplification; Be connected in described one-level discharge circuit 102, be used for the secondary discharge circuit 103 that the voltage signal that described one-level discharge circuit 102 is exported is amplified in the same way; Be connected in described secondary discharge circuit 103, the voltage signal and the reference voltage that are used for more described secondary discharge circuit 103 outputs, and described voltage signal during greater than described reference voltage output be used for the comparison circuit 104 of the pulse signal of control flat panel detector exposure.The present invention adopts the mode of a plurality of photoelectric receiving diode 1011 parallel connections, under low-down exposure dose, also can finish the exposure control to described flat panel detector, has very high sensitivity, adopt differential amplification, can effectively reduce system to the interference of photoelectric sensor 101 output signals, improve signal to noise ratio.So the present invention has effectively overcome various shortcoming of the prior art and the tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not is used for restriction the present invention.Any person skilled in the art scholar all can be under spirit of the present invention and category, and above-described embodiment is modified or changed.Therefore, have in the technical field under such as and know that usually the knowledgeable modifies or changes not breaking away from all equivalences of finishing under disclosed spirit and the technological thought, must be contained by claim of the present invention.
Claims (10)
1. a flat panel detector triggers exposure circuit automatically, it is characterized in that, comprises at least:
Photoelectric sensor comprises the photoelectric receiving diode of a plurality of parallel connections, is used for converting optical signal to the signal of telecommunication;
The one-level discharge circuit is connected in described photoelectric sensor, is used for the signal of telecommunication of described photoelectric sensor output is carried out differential amplification;
The secondary discharge circuit is connected in described one-level discharge circuit, is used for the voltage signal of described one-level discharge circuit output is amplified in the same way;
Comparison circuit is connected in described secondary discharge circuit, is used for voltage signal and the reference voltage of more described secondary discharge circuit output, and described voltage signal during greater than described reference voltage output be used for the pulse signal of control flat panel detector exposure.
2. flat panel detector according to claim 1 triggers exposure circuit automatically, it is characterized in that: the photoelectric receiving diode of a plurality of parallel connections in the described photoelectric sensor becomes electric current to transform light energy simultaneously.
3. flat panel detector according to claim 1 triggers exposure circuit automatically, it is characterized in that: described photoelectric sensor comprises the photoelectric receiving diode of 1 ~ 10 parallel connection.
4. flat panel detector according to claim 1 triggers exposure circuit automatically, it is characterized in that: described photoelectric sensor surface is coated with for the scintillation material that X ray is converted to visible light.
5. flat panel detector according to claim 1 triggers exposure circuit automatically, it is characterized in that: described one-level discharge circuit is instrument amplifier, the positive input terminal of described instrument amplifier is connected in the positive pole of described photoelectric sensor, and the instrument amplifier negative input end accesses the negative pole of described photoelectric sensor.
6. flat panel detector according to claim 1 triggers exposure circuit automatically, it is characterized in that: described secondary discharge circuit is amplifier in the same way, and the positive input terminal of described in the same way amplifier is connected in the outfan of described one-level discharge circuit.
7. flat panel detector according to claim 1 triggers exposure circuit automatically, it is characterized in that: be connected with a limiter diode between described one-level discharge circuit and the secondary discharge circuit, be used for the voltage signal of described one-level discharge circuit output is carried out amplitude limit, the positive pole of described limiter diode is connected in the outfan of described one-level discharge circuit, minus earth.
8. flat panel detector according to claim 7 triggers exposure circuit automatically, it is characterized in that: described limiter diode is Schottky diode.
9. flat panel detector according to claim 1 triggers exposure circuit automatically; it is characterized in that: also be connected with a pressure limiting diode that is used for the voltage signal of described secondary discharge circuit output is carried out voltage-limiting protection between described secondary discharge circuit and the described comparison circuit; the positive pole of described pressure limiting diode is connected in the outfan of described secondary discharge circuit, and negative pole is connected in positive supply.
10. flat panel detector according to claim 9 triggers exposure circuit automatically, it is characterized in that: described pressure limiting diode is Schottky diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210536942.2A CN103054594B (en) | 2012-12-12 | 2012-12-12 | A kind of Automatic trigger exposure circuit of flat panel detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210536942.2A CN103054594B (en) | 2012-12-12 | 2012-12-12 | A kind of Automatic trigger exposure circuit of flat panel detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103054594A true CN103054594A (en) | 2013-04-24 |
| CN103054594B CN103054594B (en) | 2015-08-19 |
Family
ID=48097716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210536942.2A Active CN103054594B (en) | 2012-12-12 | 2012-12-12 | A kind of Automatic trigger exposure circuit of flat panel detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103054594B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105496431A (en) * | 2014-09-26 | 2016-04-20 | Ge医疗***环球技术有限公司 | X-ray imaging method and X-ray imaging system |
| CN105662443A (en) * | 2015-12-31 | 2016-06-15 | 上海奕瑞光电子科技有限公司 | Inner trigger circuit and X-ray synchronization method suitable for pulse fluoroscopy |
| CN106137233A (en) * | 2015-04-09 | 2016-11-23 | 上海奕瑞光电子科技有限公司 | Detector detects the method for exposure automatically |
| CN107894951A (en) * | 2017-11-01 | 2018-04-10 | 上海奕瑞光电子科技股份有限公司 | The automated testing method and system of flat panel detector software |
| KR101855658B1 (en) * | 2017-05-26 | 2018-06-08 | 주식회사 센소니아 | Trigger circuit of x-ray photographing device having trigger valid peroid |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109884089B (en) * | 2019-02-27 | 2022-02-18 | 上海奕瑞光电子科技股份有限公司 | X-ray detector and automatic exposure monitoring method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1348741A (en) * | 2001-11-06 | 2002-05-15 | 浙江大学 | Portable intelligent dynamic cardiograph |
| CN1448729A (en) * | 2002-03-28 | 2003-10-15 | 中国科学院高能物理研究所 | Photodiode synchronous radiation X-ray beam bunching detecting process |
| US20040138920A1 (en) * | 2002-10-18 | 2004-07-15 | Kabushiki Kaisha Toshiba | Medical equipment management apparatus which predicts future status of medical equipment |
| US20080226031A1 (en) * | 2007-03-13 | 2008-09-18 | Canon Kabushiki Kaisha | Radiation imaging apparatus, and method and program for controlling radiation imaging apparatus |
| CN101366637A (en) * | 2007-08-17 | 2009-02-18 | 深圳市蓝韵实业有限公司 | Digitized radiation photography probe image capturing trigger gear and image capturing system |
| CN102422135A (en) * | 2009-05-05 | 2012-04-18 | 恩德莱斯和豪瑟尔两合公司 | Radiometric measuring device for measuring a filling level or a density of a filling material |
| CN203069792U (en) * | 2012-12-12 | 2013-07-17 | 上海奕瑞光电子科技有限公司 | Automatic trigger exposure circuit of flat panel detector |
-
2012
- 2012-12-12 CN CN201210536942.2A patent/CN103054594B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1348741A (en) * | 2001-11-06 | 2002-05-15 | 浙江大学 | Portable intelligent dynamic cardiograph |
| CN1448729A (en) * | 2002-03-28 | 2003-10-15 | 中国科学院高能物理研究所 | Photodiode synchronous radiation X-ray beam bunching detecting process |
| US20040138920A1 (en) * | 2002-10-18 | 2004-07-15 | Kabushiki Kaisha Toshiba | Medical equipment management apparatus which predicts future status of medical equipment |
| US20080226031A1 (en) * | 2007-03-13 | 2008-09-18 | Canon Kabushiki Kaisha | Radiation imaging apparatus, and method and program for controlling radiation imaging apparatus |
| CN101366637A (en) * | 2007-08-17 | 2009-02-18 | 深圳市蓝韵实业有限公司 | Digitized radiation photography probe image capturing trigger gear and image capturing system |
| CN102422135A (en) * | 2009-05-05 | 2012-04-18 | 恩德莱斯和豪瑟尔两合公司 | Radiometric measuring device for measuring a filling level or a density of a filling material |
| CN203069792U (en) * | 2012-12-12 | 2013-07-17 | 上海奕瑞光电子科技有限公司 | Automatic trigger exposure circuit of flat panel detector |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105496431A (en) * | 2014-09-26 | 2016-04-20 | Ge医疗***环球技术有限公司 | X-ray imaging method and X-ray imaging system |
| CN106137233A (en) * | 2015-04-09 | 2016-11-23 | 上海奕瑞光电子科技有限公司 | Detector detects the method for exposure automatically |
| CN106137233B (en) * | 2015-04-09 | 2018-06-08 | 上海奕瑞光电子科技股份有限公司 | The method that detector detects exposure automatically |
| CN105662443A (en) * | 2015-12-31 | 2016-06-15 | 上海奕瑞光电子科技有限公司 | Inner trigger circuit and X-ray synchronization method suitable for pulse fluoroscopy |
| CN105662443B (en) * | 2015-12-31 | 2019-08-09 | 上海奕瑞光电子科技股份有限公司 | Suitable for the X-ray synchronous method under pulse perspective |
| KR101855658B1 (en) * | 2017-05-26 | 2018-06-08 | 주식회사 센소니아 | Trigger circuit of x-ray photographing device having trigger valid peroid |
| CN107894951A (en) * | 2017-11-01 | 2018-04-10 | 上海奕瑞光电子科技股份有限公司 | The automated testing method and system of flat panel detector software |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103054594B (en) | 2015-08-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103054594B (en) | A kind of Automatic trigger exposure circuit of flat panel detector | |
| KR102547798B1 (en) | Radiation detector and radiographic apparatus employing the same | |
| CN104335572A (en) | Radiographic imaging device, radiographic imaging system, control program for radiographic imaging device, and control method for radiographic imaging device | |
| CN203069792U (en) | Automatic trigger exposure circuit of flat panel detector | |
| CN107422359A (en) | A kind of measuring method of the neutron gamma dosage based on liquid scintillation bulk detector | |
| WO2014125888A1 (en) | X-ray computed tomography apparatus, and photon counting method | |
| US10236091B2 (en) | Backscatter shields and methods of shielding | |
| CN103135123A (en) | Measuring method and measuring device of environmental X and gamma radiation based on silicon photomultiplier | |
| JP2018508763A (en) | Composite scintillation crystal, composite scintillation detector and radiation detector | |
| JP2014228464A (en) | Radiation measuring device and radiation measuring method | |
| KR20160060506A (en) | Method for counting photon, apparatus using the same, and radiographic imaging apparatus | |
| CN105496432A (en) | Anti-universe ray system for internal exposure measurement and anti-coincidence method | |
| CN102183778B (en) | A kind of scintillation detector | |
| CN108169781A (en) | A kind of X- gammas dosage detection device | |
| CN106405623B (en) | Compton sums it up spectrometer | |
| JPS63502776A (en) | radiation detector | |
| KR101188681B1 (en) | A radiation detecting device to measure the gamma-ray and neutron discriminately | |
| CN104515781B (en) | X-ray inspection system | |
| KR101702977B1 (en) | a portable radioactive ray detector and the radioactive ray detecting system using thereof | |
| CN202533589U (en) | Plastic scintillator detector for radiation detection | |
| JP2018201685A (en) | Radiographic apparatus, radiographic method and program | |
| JP2021500559A (en) | Radiation detector with analyzer in housing | |
| CN109917443A (en) | High energy gamma radiation detection device | |
| CN109884089A (en) | A kind of X-ray detector and automatic exposure monitoring method | |
| KR20120124705A (en) | A radiation measuring instrument for carrying |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201201 Shanghai City, Pudong New Area Zhangjiang hi tech Industrial District Ruiqinglu No. 590 9 2 storey 202 room Patentee after: Shanghai Yi Ruiguang electronic Polytron Technologies Inc Address before: 201201 Shanghai City, Pudong New Area Zhangjiang hi tech Industrial District Ruiqinglu No. 590 9 2 storey 202 room Patentee before: Shanghai Yirui Optoelectronics Technology Co., Ltd. |