A general-purpose emccd single-board camera system
A general-purpose, single-board technology, applied in the components of TV systems, image communication, TV and other directions, can solve the problems of cumbersome debugging of changing chips, no image processing function, etc., to achieve convenient debugging and testing, low power consumption, convenient The effect of the test
Active Publication Date: 2022-02-18
NANJING UNIV OF SCI & TECH
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Patent 201510890489.9 "CCD camera, multi-parameter controllable electron multiplication CCD imaging system and method" designs an EMCCD camera system to make the application of EMCCD chips camera-oriented and miniaturized, but this system is only for one chip. If it is used for testing, it will has great limitations
The patent 201710524708.0 "Universal Electron Multiplication CCD Drive System and Its Method" and the paper "A Universal EMCCD Drive System" designed a general EMCCD drive electronic system that can drive most EMCCD chips. However, the system consists of multiple Composed of one board and card, it is cumbersome to change the chip and debug
The single-board camera system designed in the paper "Research on EMCCD Imaging Components" is only for the circuit design of one chip, which also has limitations and has no image processing function
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[0022] combine figure 1 , the general-purpose EMCCD single-board camera system of the present invention includes a lens 1, a computer 2, an EMCCD device backplane 3 and a base plate 4, wherein the base plate 4 is the main component of the present invention. Backplane 4 includes system power supply unit 4-1, FPGA control unit 4-2, serial port control unit 4-3, transfer clock drive unit 4-5, multiplication clock drive unit 4-6, low-pass filter unit 4-7, two-way Correlated double sampling A / D conversion unit 4-8, level conversion unit 4-9, Cameralink output interface unit 4-10. The system power supply unit 4-1 is respectively connected with the above-mentioned other units to provide a stable voltage; the FPGA control unit 4-2 is respectively connected with the transfer clock drive unit 4-5, the multiplication clock drive unit 4-6, the level conversion unit 4-9, The CameraLink interface unit 4-10 is connected with the serial port control unit 4-3. EMCCD device backplane 3 compri...
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The invention discloses a general-purpose EMCCD single-board camera system, which includes a lens, a computer, an EMCCD device backplane and a bottom board, and the bottom board includes a system power supply unit, an FPGA control unit, a serial port control unit, a DDR2 storage unit, a transfer clock drive unit, and a multiplier Clock drive unit, low-pass filter unit, two-way correlation double sampling A / D conversion unit, level conversion unit, Cameralink input interface unit, Cameralink output interface unit. Compared with the previous multi-board system, the present invention adopts a single-board drive, which avoids the trouble of misalignment of the timing and phase relationship between boards. Compared with the camera, it can also meet the test applications of various chips and meet the needs of industrial-level test systems; For different types of EMCCDs, the driver may be changed in the software, and only a different EMCCD base needs to be designed in the hardware.
Description
technical field [0001] The invention belongs to the technical field of low-light imaging, in particular to a general-purpose EMCCD (electron multiplication CCD) single-board camera system. Background technique [0002] CCD (Charge Coupled Device) was invented in the 1970s and has the advantages of small size, low noise, and long life. In recent years, people are gradually dissatisfied with the application of CCD in the field of visible light, and gradually expand to the field of low light. Twilight refers to relatively weak light at night or in low-light environment conditions or light with low energy that is not enough to cause human visual perception. Under such conditions, low-light imaging technology is required to detect and image the faint light emitted by the target or reflected by stars and moonlight, which is far lower than normal illumination. The principle of this technology is that after the detector detects a weak signal, it amplifies, transmits, converts, pro...
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IPC IPC(8): H04N5/372
CPCH04N25/71
Inventor 何伟基杨俊超陈钱顾国华张闻文夏一凡朱海奇吴才勇
Owner NANJING UNIV OF SCI & TECH