WO2019205595A1 - Streak camera having stable imaging performance and streak camera system - Google Patents

Streak camera having stable imaging performance and streak camera system Download PDF

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Publication number
WO2019205595A1
WO2019205595A1 PCT/CN2018/115902 CN2018115902W WO2019205595A1 WO 2019205595 A1 WO2019205595 A1 WO 2019205595A1 CN 2018115902 W CN2018115902 W CN 2018115902W WO 2019205595 A1 WO2019205595 A1 WO 2019205595A1
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Prior art keywords
power supply
switching power
camera
stripe
imaging performance
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PCT/CN2018/115902
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French (fr)
Chinese (zh)
Inventor
顾礼
杨方
杨勤劳
周军兰
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深圳大学
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Publication of WO2019205595A1 publication Critical patent/WO2019205595A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/44—Electric circuits
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/44—Electric circuits
    • G01J2001/4446—Type of detector
    • G01J2001/4486—Streak tube

Definitions

  • the present invention relates to the field of stripe cameras, and more particularly to a stripe camera and stripe camera system with stable imaging performance.
  • Stripe camera also known as scanning camera, is an important diagnostic instrument for obtaining continuous spatiotemporal change information of ultrafast optical radiation. Imaging research of optical ultrafast phenomena on natural science, clean energy, material physics, photobiochemistry, photochemistry, ultrashort laser technology, laser Physics, high-energy physics and other scientific research and technology fields play an important role. In particular, it is an indispensable diagnostic instrument for obtaining impulsive dynamics and implosion compression information in laser-driven inertial confinement fusion to obtain continuous spatiotemporal changes of plasma radiation. With the deep research on the stripe camera, the time-space and energy spectrum diagnosis of the stripe camera is required to be "precisioned", and the stripe camera is required to have high spatial and temporal resolution, large dynamic range, and high working stability.
  • the voltage divider circuit usually adopts a resistor series voltage dividing circuit.
  • the voltage dividing circuit has a simple structure and low cost, but for a common resistor, when the current passing through it increases, the temperature of the resistor increases. The resistance value will also change accordingly, which will make the voltage divider of the voltage divider change, and the image performance of the stripe camera will deteriorate.
  • the small current resistor series voltage divider circuit reduces the resistance heat generation, the partial pressure change caused by the current thermal effect still exists.
  • the voltage dividing circuit needs to have a certain current. Therefore, the influence of the current thermal effect on the voltage division stability in the circuit series voltage dividing circuit is difficult to avoid, especially in After the camera is working for a long time and after standby, the resistance heat causes the partial pressure to change more and the camera imaging stability is worse.
  • the technical problem to be solved by the present invention is that the voltage divider of the above-mentioned stripe camera of the prior art adopts a series resistor divider to cause voltage instability and is susceptible to interference from external electromagnetic fields, and provides a stripe camera with stable imaging performance and Stripe camera system.
  • the technical solution adopted by the present invention to solve the technical problem thereof is to construct a stripe camera with stable imaging performance, including a stripe image tube and a stand-alone power supply group;
  • the stripe image tube includes a photocathode P/C, a grid M, a first focusing electrode F 1 , a first anode A 1 , a second focusing electrode F 2 , a second anode A 2 , and a fluorescent screen P/S;
  • the independent regulated power supply unit includes a first switching power supply, a second switching power supply, a third switching power supply, a fourth switching power supply, and a fifth switching power supply;
  • the first switch connects the power supply photocathode P / C, and the second switching power supply connected to the grid M, the third switch connecting the power supply first focus electrode F 1, the fourth switching power supply Connecting the first anode A 1 , the fifth switching power supply is connected to the second focusing electrode F 2 , the second anode A 2 and the fluorescent screen P/S are grounded; the first switching power supply and the second switching power supply The third switching power supply, the fourth switching power supply, and the fifth switching power supply independently supply voltages.
  • the fringe camera with stable imaging performance according to the present invention, the photocathode P/C, the grid M, the first focusing electrode F 1 , the first anode A 1 , the second focusing electrode F 2 , and the second anode A 2 and the fluorescent screen P/S are arranged in order.
  • the first switching power supply, the second switching power supply, the third switching power supply, the fourth switching power supply, and the fifth switching power supply are negative feedback switching power supplies.
  • the fringe camera with stable imaging performance further includes a power supply box for accommodating the independent regulated power supply unit;
  • the first switching power supply, the second switching power supply, the third switching power supply, the fourth switching power supply, and the fifth switching power supply are placed in the power supply box.
  • the surface of the power supply box is covered with an electromagnetic shielding film for shielding an electromagnetic field, and the electromagnetic shielding film is grounded;
  • a wiring hole for wiring is disposed on the electromagnetic shielding film.
  • the electromagnetic shielding film is a metal shielding film
  • the metal shielding film is one of copper foil, aluminum foil, gold foil, silver foil, and iron foil.
  • the fringe camera with stable imaging performance includes an electromagnetic shielding barrel for shielding an electromagnetic field, and the electromagnetic shielding barrel is nested in an equipotential tube of the stripe image tube Inside the shell.
  • the electromagnetic shielding barrel is a permalloy barrel.
  • the image processing stable streak camera of the present invention further comprises a vacuum chamber for placing the stripe image tube;
  • the stripe camera is one of an X-ray stripe camera, an ultraviolet stripe camera, a visible light stripe camera, and an infrared stripe camera.
  • the present invention further provides a fringe camera system with stable imaging performance, including the above-described fringe camera with stable imaging performance, and a CCD camera and a computer;
  • An input end of the stripe camera receives an optical signal
  • the CCD camera is disposed at an output end of the stripe camera for acquiring an image displayed on a screen P/S of the stripe camera; the CCD camera is connected to the computer And transmitting the acquired image to the computer.
  • a stripe camera and stripe camera system with stable imaging performance embodying the present invention has the following beneficial effects: in the stripe camera, the first switching power supply is connected to the photocathode P/C, the second switching power supply is connected to the grid M, and the third switching power supply connected to the first focusing electrode F 1, the fourth switch connected to a first power supply anodes A 1, the fifth power switch connected to the second focus electrode F 2, a second anode and a phosphor screen A 2 P / S is grounded; a first switching power supply, The second switching power supply, the third switching power supply, the fourth switching power supply, and the fifth switching power supply independently supply voltages.
  • FIG. 1 is a schematic structural view of a stripe camera system in the prior art
  • FIG. 2 is a schematic diagram of a series resistance partial pressure in the prior art
  • FIG. 3 is a schematic structural view of a stripe camera system with stable imaging performance according to the present invention.
  • FIG. 4 is a schematic view showing the connection of the stripe image tube and the independent regulated power supply unit of the present invention
  • Figure 5 is a schematic structural view of a power supply box of the present invention.
  • Fig. 6 is a structural schematic view showing a nested permalloy barrel in an equipotential zone tube of the stripe image tube of the present invention.
  • FIG. 3 is a schematic view showing the structure of a stripe camera system with stable imaging performance according to the present invention.
  • the stripe camera system with stable imaging performance includes a stripe camera with stable imaging performance, a CCD camera, and a computer.
  • the input of the stripe camera receives the light signal
  • the CCD camera is placed at the output of the stripe camera for capturing the image displayed on the screen P/S of the stripe camera.
  • the CCD camera is connected to the computer, and the captured image is transmitted to the computer, and the computer processes the image to obtain the test result.
  • the stripe camera is an X-ray stripe camera, an ultraviolet stripe camera, a visible light stripe camera, an infrared stripe camera, etc.
  • the optical signal received by the input end of the stripe camera is a fast optical signal.
  • the fringe phase with stable imaging performance includes a stripe image tube and a stand-alone regulated power supply group, wherein the stripe image tube includes a photocathode P/C (photocathode, P/C), a grid M, and a first focusing electrode.
  • the stripe image tube includes a photocathode P/C (photocathode, P/C), a grid M, and a first focusing electrode.
  • the photocathode P/C is the input end of the stripe camera.
  • the photocathode P/C, the grid M, the first focusing electrode F 1 , the first anode A 1 , the second focusing electrode F 2 , the second anode A 2 , and the phosphor screen P/S are sequentially arranged, and the ultra-fast light signal is irradiated.
  • Photocathode P/C, excitation produces signal photoelectrons
  • photocathode P/C and grid M form a uniform acceleration field, accelerating signal photoelectrons.
  • the signal photoelectrons are focused by the focusing area composed of the first focusing electrode F 1 , the first anode A 1 , the second focusing electrode F 2 , and the second anode A 2 , pass through the deflecting plate DP, and complete the electro-optic on the fluorescent screen P/S. Transform and image.
  • the independent regulated power supply group includes a first switching power supply, a second switching power supply, a third switching power supply, a fourth switching power supply, and a fifth switching power supply, and the five switching power supplies are independent of each other and do not affect each other.
  • the first switching power supply, the second switching power supply, the third switching power supply, the fourth switching power supply, and the fifth switching power supply are negative feedback switching power supplies, and provide a stable static high voltage output according to the negative feedback.
  • the switching power supply used in the present invention adopts the prior art, that is, the first switching power supply, the second switching power supply, the third switching power supply, the fourth switching power supply, and the fifth switching power supply are prior art, and the specific The structure and working principle can refer to the prior art, and details are not described herein again.
  • FIG. 4 is a schematic view showing the connection of the stripe image tube and the independent regulated power supply unit of the present invention.
  • the first switching power supply is connected photocathode P / C, connected to the second switching power supply grid M, the third focusing electrode connected to the first power supply switch F 1, the fourth switch connected to a first power supply anodes A 1, a fifth switching power supply
  • the second focusing electrode F 2 is connected, the second anode A 2 and the phosphor screen P/S are grounded; preferably, the grid M and the first anode A 1 are required to have the same voltage.
  • the first switching power supply, the second switching power supply, the third switching power supply, the fourth switching power supply, and the fifth switching power supply independently supply voltages according to requirements, ensuring stable high-voltage stable output, and achieving stable performance of the stripe camera core component stripe image tube .
  • the system also has the advantages of being independent of the photocathode P/C, the grid M,
  • the first focusing electrode F 1 , the first anode A 1 , and the second focusing electrode F 2 provide a voltage and have a large adjustment space, which can be individually adjusted for the parameters of each stripe camera.
  • the advancement is made, so that each stripe camera is more conveniently calibrated, so that the imaging performance is optimized.
  • Figure 5 is a schematic view showing the structure of a power supply box of the present invention.
  • the stripe camera with stable imaging performance of the present invention further includes a power supply box for accommodating the independent regulated power supply group, the first switching power supply, the second switching power supply, the third switching power supply, and the fourth switching power supply.
  • the fifth switching power supply is placed in the power supply box.
  • the surface of the power supply box is covered with an electromagnetic shielding film for shielding electromagnetic fields, and the electromagnetic shielding film is grounded.
  • a wiring hole for wiring is provided on the electromagnetic shielding film.
  • the electromagnetic shielding film is selected from a metal shielding film capable of conducting magnetic waves, and the metal shielding film includes, but not limited to, copper foil, aluminum foil, gold foil, silver foil, iron foil, and the like.
  • Fig. 6 is a structural schematic view showing a nested permalloy barrel in an equipotential zone tube of the stripe image tube of the present invention.
  • the stripe camera usually works in a complex electromagnetic environment, and the flight path of the signal photoelectrons in the camera is easily interfered by the external electromagnetic field, especially in the equipotential region after the electron deflection, the electron flight distance is large, and it is more susceptible to interference, thereby enabling imaging. Poor performance, distortion, or even imaging.
  • the stripe image tube of the stripe camera with stable imaging performance of the present invention includes an electromagnetic shielding barrel for shielding an electromagnetic field, and the electromagnetic shielding barrel is nested in the equipotential tube shell of the stripe image tube to realize an electromagnetic field. Shielding, especially low frequency electromagnetic fields.
  • the electromagnetic shielding barrel is a permalloy barrel, and the permalloy barrel has a good shielding effect on the low frequency electromagnetic field.
  • the image sensor with stable imaging performance of the present invention further includes a vacuum chamber for placing a striped image tube.
  • the present invention by implementing the present invention, five sets of independent switching power supplies are used for independent power supply, which overcomes the inconvenience adjustment and instability problems of the existing resistor series voltage division.
  • a shielding layer on the power box and in the equipotential area of the stripe camera external electromagnetic field interference is avoided, and the test result is more accurate.
  • the invention improves the performance of the stripe camera system by improving the power problem and the electromagnetic interference problem existing in the existing stripe camera, and has good practical effects.

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Abstract

The present invention relates to a streak camera having stable imaging performance and a streak camera system. In the streak camera, a first switch power supply is connected to a photoelectric cathode P/C, a second switch power supply is connected to a grid M, a third switch power supply is connected to a first focusing electrode F1, a fourth switch power supply is connected to a first anode A1, a fifth switch power supply is connected to a second focusing electrode F2, and a second anode A2 and a fluorescent screen P/S are connected to ground. The first switch power supply, the second switch power supply, the third switch power supply, the fourth switch power supply, and the fifth switch power supply provide voltage independently from one another. By means of implementing the present invention, the existing problem of instability when resistors divide voltage in series is overcome by using five groups of independent switch power supplies to supply power independently. By means of disposing a shielding layer on a power supply box and within an equipotential region of a streak camera, interference from external electromagnetic fields is avoided, and thus test results are more accurate.

Description

一种成像性能稳定的条纹相机及条纹相机系统Stripe camera and stripe camera system with stable imaging performance 技术领域Technical field
本发明涉及条纹相机领域，更具体地说，涉及一种成像性能稳定的条纹相机及条纹相机系统。The present invention relates to the field of stripe cameras, and more particularly to a stripe camera and stripe camera system with stable imaging performance.
背景技术Background technique
条纹相机也称扫描相机，是获取超快光辐射连续时空变化信息的重要诊断仪器，光超快现象的成像研究对自然科学、清洁能源、材料物理、光生物、光化学、超短激光技术、激光物理、高能物理等科学研究和技术领域具有重要作用。尤其是研究激光驱动惯性约束聚变中获得内爆动力学及内爆压缩信息，获取等离子辐射连续时空变化图像的不可或缺的诊断仪器。随着对条纹相机研究的深入，要求条纹相机的时、空、能谱诊断“精密化”，要求条纹相机不但具有高时空分辨率、大动态范围，且具有较高的工作稳定性。Stripe camera, also known as scanning camera, is an important diagnostic instrument for obtaining continuous spatiotemporal change information of ultrafast optical radiation. Imaging research of optical ultrafast phenomena on natural science, clean energy, material physics, photobiochemistry, photochemistry, ultrashort laser technology, laser Physics, high-energy physics and other scientific research and technology fields play an important role. In particular, it is an indispensable diagnostic instrument for obtaining impulsive dynamics and implosion compression information in laser-driven inertial confinement fusion to obtain continuous spatiotemporal changes of plasma radiation. With the deep research on the stripe camera, the time-space and energy spectrum diagnosis of the stripe camera is required to be "precisioned", and the stripe camera is required to have high spatial and temporal resolution, large dynamic range, and high working stability.
当前条纹相机系统中分压器输出电压的稳定性显著影响条纹相机成像性能。参考图1和图2，分压器电路通常采用电阻串联式分压电路，这种分压电路结构简单成本低，但是对于普通电阻来说，当其内通过的电流增加，电阻温度升高，其阻值也会发生相应的变化，进而使分压器分压改变，条纹相机成像性能变差。虽然小电流电阻串联式分压电路使得电阻发热降低，但是电流热效应导致的分压改变依然存在。通常，为使条纹相机的聚焦电压具有一定可调区间，分压电路中需要具有一定的电流，因此，在电路串联式分压电路中电流热效应对分压稳定性的影响很难避免，尤其在相机长时间工作和待机后，电阻发热导致分压变化更大，相机成像稳定性更差。The stability of the output voltage of the voltage divider in current stripe camera systems significantly affects the imaging performance of the stripe camera. Referring to FIG. 1 and FIG. 2, the voltage divider circuit usually adopts a resistor series voltage dividing circuit. The voltage dividing circuit has a simple structure and low cost, but for a common resistor, when the current passing through it increases, the temperature of the resistor increases. The resistance value will also change accordingly, which will make the voltage divider of the voltage divider change, and the image performance of the stripe camera will deteriorate. Although the small current resistor series voltage divider circuit reduces the resistance heat generation, the partial pressure change caused by the current thermal effect still exists. Generally, in order to make the focus voltage of the stripe camera have a certain adjustable interval, the voltage dividing circuit needs to have a certain current. Therefore, the influence of the current thermal effect on the voltage division stability in the circuit series voltage dividing circuit is difficult to avoid, especially in After the camera is working for a long time and after standby, the resistance heat causes the partial pressure to change more and the camera imaging stability is worse.
技术问题technical problem
本发明要解决的技术问题在于，针对现有技术的上述条纹相机的分压器采用串联电阻分压导致电压不稳定，以及易受外界电磁场干扰的缺陷，提供一种成像性能稳定的条纹相机及条纹相机系统。The technical problem to be solved by the present invention is that the voltage divider of the above-mentioned stripe camera of the prior art adopts a series resistor divider to cause voltage instability and is susceptible to interference from external electromagnetic fields, and provides a stripe camera with stable imaging performance and Stripe camera system.
技术解决方案Technical solution
本发明解决其技术问题所采用的技术方案是：构造一种成像性能稳定的条纹相机，包括条纹变像管和独立式稳压电源组；The technical solution adopted by the present invention to solve the technical problem thereof is to construct a stripe camera with stable imaging performance, including a stripe image tube and a stand-alone power supply group;
所述条纹变像管包括光电阴极P/C、栅网M、第一聚焦电极F 1、第一阳极A 1、第二聚焦电极F 2、第二阳极A 2、以及荧光屏P/S；所述独立式稳压电源组包括第一开关电源、第二开关电源、第三开关电源、第四开关电源、第五开关电源； The stripe image tube includes a photocathode P/C, a grid M, a first focusing electrode F 1 , a first anode A 1 , a second focusing electrode F 2 , a second anode A 2 , and a fluorescent screen P/S; The independent regulated power supply unit includes a first switching power supply, a second switching power supply, a third switching power supply, a fourth switching power supply, and a fifth switching power supply;
所述第一开关电源连接所述光电阴极P/C，所述第二开关电源连接所述栅网M，所述第三开关电源连接所述第一聚焦电极F 1，所述第四开关电源连接所述第一阳极A 1，所述第五开关电源连接所述第二聚焦电极F 2，所述第二阳极A 2和荧光屏P/S接地；所述第一开关电源、第二开关电源、第三开关电源、第四开关电源、第五开关电源相互独立提供电压。 The first switch connects the power supply photocathode P / C, and the second switching power supply connected to the grid M, the third switch connecting the power supply first focus electrode F 1, the fourth switching power supply Connecting the first anode A 1 , the fifth switching power supply is connected to the second focusing electrode F 2 , the second anode A 2 and the fluorescent screen P/S are grounded; the first switching power supply and the second switching power supply The third switching power supply, the fourth switching power supply, and the fifth switching power supply independently supply voltages.
优选地，本发明所述的成像性能稳定的条纹相机，所述光电阴极P/C、栅网M、第一聚焦电极F 1、第一阳极A 1、第二聚焦电极F 2、第二阳极A 2、荧光屏P/S依次排列。 Preferably, the fringe camera with stable imaging performance according to the present invention, the photocathode P/C, the grid M, the first focusing electrode F 1 , the first anode A 1 , the second focusing electrode F 2 , and the second anode A 2 and the fluorescent screen P/S are arranged in order.
优选地，本发明所述的成像性能稳定的条纹相机，所述第一开关电源、第二开关电源、第三开关电源、第四开关电源、第五开关电源为负反馈式开关电源。Preferably, in the stripe camera with stable imaging performance according to the present invention, the first switching power supply, the second switching power supply, the third switching power supply, the fourth switching power supply, and the fifth switching power supply are negative feedback switching power supplies.
优选地，本发明所述的成像性能稳定的条纹相机，还包括用于容置所述独立式稳压电源组的电源盒；Preferably, the fringe camera with stable imaging performance according to the present invention further includes a power supply box for accommodating the independent regulated power supply unit;
所述第一开关电源、第二开关电源、第三开关电源、第四开关电源、第五开关电源放置在所述电源盒内。The first switching power supply, the second switching power supply, the third switching power supply, the fourth switching power supply, and the fifth switching power supply are placed in the power supply box.
优选地，本发明所述的成像性能稳定的条纹相机，所述电源盒表面覆盖一层用于屏蔽电磁场的电磁屏蔽膜，所述电磁屏蔽膜接地；Preferably, in the stripe camera with stable imaging performance according to the present invention, the surface of the power supply box is covered with an electromagnetic shielding film for shielding an electromagnetic field, and the electromagnetic shielding film is grounded;
所述电磁屏蔽膜上设置有用于接线的接线孔。A wiring hole for wiring is disposed on the electromagnetic shielding film.
优选地，本发明所述的成像性能稳定的条纹相机，所述电磁屏蔽膜为金属屏蔽膜，所述金属屏蔽膜为铜箔、铝箔、金箔、银箔、铁箔中的一种。Preferably, in the stripe camera with stable imaging performance according to the present invention, the electromagnetic shielding film is a metal shielding film, and the metal shielding film is one of copper foil, aluminum foil, gold foil, silver foil, and iron foil.
优选地，本发明所述的成像性能稳定的条纹相机，所述条纹变像管包括用于屏蔽电磁场的电磁屏蔽桶，所述电磁屏蔽桶嵌套在所述条纹变像管的等位区管壳内。Preferably, the fringe camera with stable imaging performance according to the present invention includes an electromagnetic shielding barrel for shielding an electromagnetic field, and the electromagnetic shielding barrel is nested in an equipotential tube of the stripe image tube Inside the shell.
优选地，本发明所述的成像性能稳定的条纹相机，所述电磁屏蔽桶为坡莫合金桶。Preferably, in the stripe camera with stable imaging performance according to the present invention, the electromagnetic shielding barrel is a permalloy barrel.
优选地，本发明所述的成像性能稳定的条纹相机，还包括用于放置所述条纹变像管的真空室；Preferably, the image processing stable streak camera of the present invention further comprises a vacuum chamber for placing the stripe image tube;
所述条纹相机为X射线条纹相机、紫外线条纹相机、可见光条纹相机、红外条纹相机中的一种。The stripe camera is one of an X-ray stripe camera, an ultraviolet stripe camera, a visible light stripe camera, and an infrared stripe camera.
另，本发明还提供一种成像性能稳定的条纹相机系统，包括上述的成像性能稳定的条纹相机，还包括CCD摄像机和电脑；In addition, the present invention further provides a fringe camera system with stable imaging performance, including the above-described fringe camera with stable imaging performance, and a CCD camera and a computer;
所述条纹相机的输入端接收光信号，所述CCD摄像机设置在所述条纹相机的输出端，用于采集所述条纹相机的荧光屏P/S上显示的图像；所述CCD摄像机连接所述电脑，将采集的图像传输至所述电脑。An input end of the stripe camera receives an optical signal, and the CCD camera is disposed at an output end of the stripe camera for acquiring an image displayed on a screen P/S of the stripe camera; the CCD camera is connected to the computer And transmitting the acquired image to the computer.
有益效果Beneficial effect
实施本发明的一种成像性能稳定的条纹相机及条纹相机系统，具有以下有益效果：在该条纹相机中，第一开关电源连接光电阴极P/C，第二开关电源连接栅网M，第三开关电源连接第一聚焦电极F 1，第四开关电源连接第一阳极A 1，第五开关电源连接第二聚焦电极F 2，第二阳极A 2和荧光屏P/S接地；第一开关电源、第二开关电源、第三开关电源、第四开关电源、第五开关电源相互独立提供电压。通过实施本发明，采用五组独立开关电源独立供电，克服现有电阻串联分压的不稳定问题；通过在电源盒上以及在条纹相机的等位区内设置屏蔽层，避免外部电磁场干扰，使的测试结果更加准确。 A stripe camera and stripe camera system with stable imaging performance embodying the present invention has the following beneficial effects: in the stripe camera, the first switching power supply is connected to the photocathode P/C, the second switching power supply is connected to the grid M, and the third switching power supply connected to the first focusing electrode F 1, the fourth switch connected to a first power supply anodes A 1, the fifth power switch connected to the second focus electrode F 2, a second anode and a phosphor screen A 2 P / S is grounded; a first switching power supply, The second switching power supply, the third switching power supply, the fourth switching power supply, and the fifth switching power supply independently supply voltages. By implementing the invention, five sets of independent switching power supplies are used for independent power supply, which overcomes the instability problem of the existing resistor series voltage division; by providing a shielding layer on the power supply box and in the equipotential area of the stripe camera, external electromagnetic field interference is avoided, so that The test results are more accurate.
附图说明DRAWINGS
下面将结合附图及实施例对本发明作进一步说明，附图中：The present invention will be further described below in conjunction with the accompanying drawings and embodiments, in which:
图1是现有技术中条纹相机系统的结构示意图；1 is a schematic structural view of a stripe camera system in the prior art;
图2是现有技术中串联电阻分压示意图；2 is a schematic diagram of a series resistance partial pressure in the prior art;
图3是本发明一种成像性能稳定的条纹相机系统的结构示意图；3 is a schematic structural view of a stripe camera system with stable imaging performance according to the present invention;
图4是本发明条纹变像管和独立式稳压电源组的连接示意图；4 is a schematic view showing the connection of the stripe image tube and the independent regulated power supply unit of the present invention;
图5是本发明电源盒的结构示意图；Figure 5 is a schematic structural view of a power supply box of the present invention;
图6是本发明条纹变像管等位区管内嵌套坡莫合金桶的结构示意图。Fig. 6 is a structural schematic view showing a nested permalloy barrel in an equipotential zone tube of the stripe image tube of the present invention.
本发明的最佳实施方式BEST MODE FOR CARRYING OUT THE INVENTION
为了对本发明的技术特征、目的和效果有更加清楚的理解，现对照附图详细说明本发明的具体实施方式。For a better understanding of the technical features, objects and effects of the present invention, the embodiments of the present invention are described in detail with reference to the accompanying drawings.
图3是本发明一种成像性能稳定的条纹相机系统的结构示意图。3 is a schematic view showing the structure of a stripe camera system with stable imaging performance according to the present invention.
具体的，该成像性能稳定的条纹相机系统包括成像性能稳定的条纹相机、CCD摄像机和电脑。条纹相机的输入端接收光信号，CCD摄像机设置在条纹相机的输出端，用于采集条纹相机的荧光屏P/S上显示的图像。CCD摄像机连接电脑，将采集的图像传输至电脑，电脑对图像进行处理得到测试结果。优选地，条纹相机为X射线条纹相机、紫外线条纹相机、可见光条纹相机、红外条纹相机等，条纹相机的输入端接收的光信号为快速光信号。Specifically, the stripe camera system with stable imaging performance includes a stripe camera with stable imaging performance, a CCD camera, and a computer. The input of the stripe camera receives the light signal, and the CCD camera is placed at the output of the stripe camera for capturing the image displayed on the screen P/S of the stripe camera. The CCD camera is connected to the computer, and the captured image is transmitted to the computer, and the computer processes the image to obtain the test result. Preferably, the stripe camera is an X-ray stripe camera, an ultraviolet stripe camera, a visible light stripe camera, an infrared stripe camera, etc., and the optical signal received by the input end of the stripe camera is a fast optical signal.
进一步，该成像性能稳定的条纹相包括条纹变像管和独立式稳压电源组，其中，条纹变像管包括光电阴极P/C（photocathode，P/C）、栅网M、第一聚焦电极F 1、第一阳极A 1、第二聚焦电极F 2、第二阳极A 2、以及荧光屏P/S（phosphor screen，P/S），光电阴极P/C即为条纹相机的输入端。光电阴极P/C、栅网M、第一聚焦电极F 1、第一阳极A 1、第二聚焦电极F 2、第二阳极A 2、以及荧光屏P/S依次顺序排列，超快光信号照射光电阴极P/C，激发产生信号光电子，光电阴极P/C和栅网M形成均匀加速场，加速信号光电子。信号光电子在第一聚焦电极F 1、第一阳极A 1、第二聚焦电极F 2、以及第二阳极A 2组成的聚焦区聚焦后，穿过偏转板DP，在荧光屏P/S上完成电光转化并成像。 Further, the fringe phase with stable imaging performance includes a stripe image tube and a stand-alone regulated power supply group, wherein the stripe image tube includes a photocathode P/C (photocathode, P/C), a grid M, and a first focusing electrode. F 1 , the first anode A 1 , the second focusing electrode F 2 , the second anode A 2 , and a phosphor screen P/S, the photocathode P/C is the input end of the stripe camera. The photocathode P/C, the grid M, the first focusing electrode F 1 , the first anode A 1 , the second focusing electrode F 2 , the second anode A 2 , and the phosphor screen P/S are sequentially arranged, and the ultra-fast light signal is irradiated. Photocathode P/C, excitation produces signal photoelectrons, photocathode P/C and grid M form a uniform acceleration field, accelerating signal photoelectrons. The signal photoelectrons are focused by the focusing area composed of the first focusing electrode F 1 , the first anode A 1 , the second focusing electrode F 2 , and the second anode A 2 , pass through the deflecting plate DP, and complete the electro-optic on the fluorescent screen P/S. Transform and image.
进一步，独立式稳压电源组包括第一开关电源、第二开关电源、第三开关电源、第四开关电源、第五开关电源，这五个开关电源相互独立，互不影响。优选地，第一开关电源、第二开关电源、第三开关电源、第四开关电源、第五开关电源为负反馈式开关电源，根据负反馈提供稳定的静态高压输出。需要说明的是，本发明中使用的开关电源采用现有技术，也即第一开关电源、第二开关电源、第三开关电源、第四开关电源、第五开关电源为现有技术，其具体结构和工作原理可参考现有技术，在此不再赘述。Further, the independent regulated power supply group includes a first switching power supply, a second switching power supply, a third switching power supply, a fourth switching power supply, and a fifth switching power supply, and the five switching power supplies are independent of each other and do not affect each other. Preferably, the first switching power supply, the second switching power supply, the third switching power supply, the fourth switching power supply, and the fifth switching power supply are negative feedback switching power supplies, and provide a stable static high voltage output according to the negative feedback. It should be noted that the switching power supply used in the present invention adopts the prior art, that is, the first switching power supply, the second switching power supply, the third switching power supply, the fourth switching power supply, and the fifth switching power supply are prior art, and the specific The structure and working principle can refer to the prior art, and details are not described herein again.
图4是本发明条纹变像管和独立式稳压电源组的连接示意图。4 is a schematic view showing the connection of the stripe image tube and the independent regulated power supply unit of the present invention.
具体的，第一开关电源连接光电阴极P/C，第二开关电源连接栅网M，第三开关电源连接第一聚焦电极F 1，第四开关电源连接第一阳极A 1，第五开关电源连接第二聚焦电极F 2，第二阳极A 2和荧光屏P/S接地；优选地，栅网M和第一阳极A 1所需电压相同。第一开关电源、第二开关电源、第三开关电源、第四开关电源、第五开关电源根据需求相互独立提供电压，保证静态高电压稳定输出，实现条纹相机核心部件条纹变像管的性能稳定。另外，考虑到通常条纹变像管工程设计和电极装架存在误差，需要调整聚焦电压对其成像进行补偿和校正时，该系统的好处还在于可以独立为光电阴极P/C、栅网M、第一聚焦电极F 1、第一阳极A 1、第二聚焦电极F 2提供电压，且具有较大的调整空间，可针对每个条纹相机的参数进行个性化调节。相比于现有技术中电阻串联分压不便调节的缺点，具有较大进步，使得每一台条纹相机更方便进行校准，从而使成像性能达到最佳。 Specifically, the first switching power supply is connected photocathode P / C, connected to the second switching power supply grid M, the third focusing electrode connected to the first power supply switch F 1, the fourth switch connected to a first power supply anodes A 1, a fifth switching power supply The second focusing electrode F 2 is connected, the second anode A 2 and the phosphor screen P/S are grounded; preferably, the grid M and the first anode A 1 are required to have the same voltage. The first switching power supply, the second switching power supply, the third switching power supply, the fourth switching power supply, and the fifth switching power supply independently supply voltages according to requirements, ensuring stable high-voltage stable output, and achieving stable performance of the stripe camera core component stripe image tube . In addition, considering the error of the conventional stripe tube engineering design and the electrode assembly, it is necessary to adjust the focus voltage to compensate and correct its imaging. The system also has the advantages of being independent of the photocathode P/C, the grid M, The first focusing electrode F 1 , the first anode A 1 , and the second focusing electrode F 2 provide a voltage and have a large adjustment space, which can be individually adjusted for the parameters of each stripe camera. Compared with the disadvantages of the inconvenient adjustment of the resistor series voltage division in the prior art, the advancement is made, so that each stripe camera is more conveniently calibrated, so that the imaging performance is optimized.
图5是本发明电源盒的结构示意图。Figure 5 is a schematic view showing the structure of a power supply box of the present invention.
具体的，当条纹相机工作在复杂的电磁环境时，外部磁场会对内部开关电源造成干扰，特别是高频电磁场干扰。为避免外部电磁场干扰，本发明的成像性能稳定的条纹相机还包括用于容置独立式稳压电源组的电源盒，第一开关电源、第二开关电源、第三开关电源、第四开关电源、第五开关电源放置在电源盒内。并且该电源盒表面覆盖一层用于屏蔽电磁场的电磁屏蔽膜，电磁屏蔽膜接地。另外，电磁屏蔽膜上设置有用于接线的接线孔。优选地，电磁屏蔽膜选用可导电磁波的金属屏蔽膜即可，金属屏蔽膜包括但不限于铜箔、铝箔、金箔、银箔、铁箔等。Specifically, when the stripe camera operates in a complex electromagnetic environment, the external magnetic field may cause interference to the internal switching power supply, especially high frequency electromagnetic field interference. In order to avoid external electromagnetic field interference, the stripe camera with stable imaging performance of the present invention further includes a power supply box for accommodating the independent regulated power supply group, the first switching power supply, the second switching power supply, the third switching power supply, and the fourth switching power supply. The fifth switching power supply is placed in the power supply box. And the surface of the power supply box is covered with an electromagnetic shielding film for shielding electromagnetic fields, and the electromagnetic shielding film is grounded. In addition, a wiring hole for wiring is provided on the electromagnetic shielding film. Preferably, the electromagnetic shielding film is selected from a metal shielding film capable of conducting magnetic waves, and the metal shielding film includes, but not limited to, copper foil, aluminum foil, gold foil, silver foil, iron foil, and the like.
图6是本发明条纹变像管等位区管内嵌套坡莫合金桶的结构示意图。Fig. 6 is a structural schematic view showing a nested permalloy barrel in an equipotential zone tube of the stripe image tube of the present invention.
具体的，条纹相机通常工作在复杂的电磁环境中，相机中信号光电子的飞行轨迹容易受到外界电磁场干扰，尤其在电子偏转后的等位区，电子飞行距离大，更容易受到干扰，从而使成像性能变差、扭曲甚至不成像。为解决该问题，本发明的成像性能稳定的条纹相机的条纹变像管包括用于屏蔽电磁场的电磁屏蔽桶，电磁屏蔽桶嵌套在条纹变像管的等位区管壳内，实现对电磁场的屏蔽，特别是低频电磁场。进一步，在屏蔽电磁场干扰的同时，还可对等位区等势场的建立形成保护作用。优选地，电磁屏蔽桶为坡莫合金桶，坡莫合金桶对低频电磁场具有较好的屏蔽作用。Specifically, the stripe camera usually works in a complex electromagnetic environment, and the flight path of the signal photoelectrons in the camera is easily interfered by the external electromagnetic field, especially in the equipotential region after the electron deflection, the electron flight distance is large, and it is more susceptible to interference, thereby enabling imaging. Poor performance, distortion, or even imaging. In order to solve the problem, the stripe image tube of the stripe camera with stable imaging performance of the present invention includes an electromagnetic shielding barrel for shielding an electromagnetic field, and the electromagnetic shielding barrel is nested in the equipotential tube shell of the stripe image tube to realize an electromagnetic field. Shielding, especially low frequency electromagnetic fields. Further, while shielding the electromagnetic field interference, it is also possible to form a protective effect on the establishment of the equipotential zone and the like. Preferably, the electromagnetic shielding barrel is a permalloy barrel, and the permalloy barrel has a good shielding effect on the low frequency electromagnetic field.
本发明的成像性能稳定的条纹相机还包括用于放置条纹变像管的真空室。The image sensor with stable imaging performance of the present invention further includes a vacuum chamber for placing a striped image tube.
综上，通过实施本发明，采用五组独立开关电源独立供电，克服现有电阻串联分压的不便调节以及不稳定问题。通过在电源盒上以及在条纹相机的等位区内设置屏蔽层，避免外部电磁场干扰，使的测试结果更加准确。本发明通过对现有条纹相机存在的电源问题和电磁干扰问题进行改进，提高了条纹相机系统的性能，具有很好的实践效果。In summary, by implementing the present invention, five sets of independent switching power supplies are used for independent power supply, which overcomes the inconvenience adjustment and instability problems of the existing resistor series voltage division. By providing a shielding layer on the power box and in the equipotential area of the stripe camera, external electromagnetic field interference is avoided, and the test result is more accurate. The invention improves the performance of the stripe camera system by improving the power problem and the electromagnetic interference problem existing in the existing stripe camera, and has good practical effects.
以上实施例只为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人士能够了解本发明的内容并据此实施，并不能限制本发明的保护范围。凡跟本发明权利要求范围所做的均等变化与修饰，均应属于本发明权利要求的涵盖范围。The above embodiments are merely illustrative of the technical concept and the features of the present invention. The purpose of the present invention is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention without limiting the scope of the present invention. Equivalent changes and modifications made within the scope of the claims of the present invention should fall within the scope of the appended claims.

Claims (10)

  1. 一种成像性能稳定的条纹相机，其特征在于，包括条纹变像管和独立式稳压电源组；A fringe camera with stable imaging performance, characterized in that it comprises a stripe image tube and a stand-alone regulated power supply group;
    所述条纹变像管包括光电阴极P/C、栅网M、第一聚焦电极F 1、第一阳极A 1、第二聚焦电极F 2、第二阳极A 2、以及荧光屏P/S；所述独立式稳压电源组包括第一开关电源、第二开关电源、第三开关电源、第四开关电源、第五开关电源； The stripe image tube includes a photocathode P/C, a grid M, a first focusing electrode F 1 , a first anode A 1 , a second focusing electrode F 2 , a second anode A 2 , and a fluorescent screen P/S; The independent regulated power supply unit includes a first switching power supply, a second switching power supply, a third switching power supply, a fourth switching power supply, and a fifth switching power supply;
    所述第一开关电源连接所述光电阴极P/C，所述第二开关电源连接所述栅网M，所述第三开关电源连接所述第一聚焦电极F 1，所述第四开关电源连接所述第一阳极A 1，所述第五开关电源连接所述第二聚焦电极F 2，所述第二阳极A 2和荧光屏P/S接地；所述第一开关电源、第二开关电源、第三开关电源、第四开关电源、第五开关电源相互独立提供电压。 The first switch connects the power supply photocathode P / C, and the second switching power supply connected to the grid M, the third switch connecting the power supply first focus electrode F 1, the fourth switching power supply Connecting the first anode A 1 , the fifth switching power supply is connected to the second focusing electrode F 2 , the second anode A 2 and the fluorescent screen P/S are grounded; the first switching power supply and the second switching power supply The third switching power supply, the fourth switching power supply, and the fifth switching power supply independently supply voltages.
  2. 根据权利要求1所述的成像性能稳定的条纹相机，其特征在于，所述光电阴极P/C、栅网M、第一聚焦电极F 1、第一阳极A 1、第二聚焦电极F 2、第二阳极A 2、荧光屏P/S依次排列。 The fringe camera with stable imaging performance according to claim 1, wherein the photocathode P/C, the grid M, the first focusing electrode F 1 , the first anode A 1 , the second focusing electrode F 2 , The second anode A 2 and the phosphor screen P/S are sequentially arranged.
  3. 3、根据权利要求1所述的成像性能稳定的条纹相机，其特征在于，所述第一开关电源、第二开关电源、第三开关电源、第四开关电源、第五开关电源为负反馈式开关电源。The image sensor with stable imaging performance according to claim 1, wherein the first switching power supply, the second switching power supply, the third switching power supply, the fourth switching power supply, and the fifth switching power supply are negative feedback type. Switching power supply.
  4. 根据权利要求1所述的成像性能稳定的条纹相机，其特征在于，还包括用于容置所述独立式稳压电源组的电源盒；The stripe camera with stable imaging performance according to claim 1, further comprising a power supply box for accommodating the independent regulated power supply unit;
    所述第一开关电源、第二开关电源、第三开关电源、第四开关电源、第五开关电源放置在所述电源盒内。The first switching power supply, the second switching power supply, the third switching power supply, the fourth switching power supply, and the fifth switching power supply are placed in the power supply box.
  5. 根据权利要求4所述的成像性能稳定的条纹相机，其特征在于，所述电源盒表面覆盖一层用于屏蔽电磁场的电磁屏蔽膜，所述电磁屏蔽膜接地；The stripe camera with stable imaging performance according to claim 4, wherein the surface of the power supply box is covered with an electromagnetic shielding film for shielding an electromagnetic field, and the electromagnetic shielding film is grounded;
    所述电磁屏蔽膜上设置有用于接线的接线孔。A wiring hole for wiring is disposed on the electromagnetic shielding film.
  6. 根据权利要求4所述的成像性能稳定的条纹相机，其特征在于，所述电磁屏蔽膜为金属屏蔽膜，所述金属屏蔽膜为铜箔、铝箔、金箔、银箔、铁箔中的一种。The stripe camera with stable imaging performance according to claim 4, wherein the electromagnetic shielding film is a metal shielding film, and the metal shielding film is one of copper foil, aluminum foil, gold foil, silver foil, and iron foil. .
  7. 根据权利要求1所述的成像性能稳定的条纹相机，其特征在于，所述条纹变像管包括用于屏蔽电磁场的电磁屏蔽桶，所述电磁屏蔽桶嵌套在所述条纹变像管的等位区管壳内。The fringe camera with stable imaging performance according to claim 1, wherein the stripe image tube includes an electromagnetic shielding barrel for shielding an electromagnetic field, the electromagnetic shielding barrel is nested in the stripe image tube, etc. Inside the tube casing.
  8. 根据权利要求7所述的成像性能稳定的条纹相机，其特征在于，所述电磁屏蔽桶为坡莫合金桶。The fringe camera with stable imaging performance according to claim 7, wherein the electromagnetic shielding barrel is a permalloy barrel.
  9. 根据权利要求1所述的成像性能稳定的条纹相机，其特征在于，还包括用于放置所述条纹变像管的真空室；A fringe camera having stable imaging performance according to claim 1, further comprising a vacuum chamber for placing said stripe image tube;
    所述条纹相机为X射线条纹相机、紫外线条纹相机、可见光条纹相机、红外条纹相机中的一种。The stripe camera is one of an X-ray stripe camera, an ultraviolet stripe camera, a visible light stripe camera, and an infrared stripe camera.
  10. 一种成像性能稳定的条纹相机系统，其特征在于，包括权利要求1-9任一项所述的成像性能稳定的条纹相机，还包括CCD摄像机和电脑；A stripe camera system with stable imaging performance, comprising the stripe camera with stable imaging performance according to any one of claims 1-9, further comprising a CCD camera and a computer;
    所述条纹相机的输入端接收光信号，所述CCD摄像机设置在所述条纹相机的输出端，用于采集所述条纹相机的荧光屏P/S上显示的图像；所述CCD摄像机连接所述电脑，将采集的图像传输至所述电脑。An input end of the stripe camera receives an optical signal, and the CCD camera is disposed at an output end of the stripe camera for acquiring an image displayed on a screen P/S of the stripe camera; the CCD camera is connected to the computer And transmitting the acquired image to the computer.
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