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FPGA based photon counting detector image production achievement method

An image generation and photon counting technology, applied in the field of photoelectric detection, can solve the problems of reducing system reliability, limited response time, increasing design difficulty, etc., and achieve the effect of meeting continuous shooting, simplifying interface design, and improving image data throughput

Inactive Publication Date: 2015-01-28
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

In addition, the FPGA software uses interrupts to send coordinate image data to the embedded software, and the embedded software needs to take into account other control functions of the camera at the same time, and the response time is limited. The system clock is used to meet the response speed, but this method not only increases the design difficulty but also reduces the system reliability

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  • FPGA based photon counting detector image production achievement method
  • FPGA based photon counting detector image production achievement method
  • FPGA based photon counting detector image production achievement method

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specific Embodiment approach 1

[0020] Specific implementation mode 1. Combination Figure 1 to Figure 3 Describe this embodiment, realize the photon counting detector image generation method based on FPGA, implement the image generation unit through FPGA, the image generation unit can complete the write storage and read out transmission of image data at the same time to realize the function of continuous shooting;

[0021] Design five buffer FIFOs and two controllers in the image generation unit, which are the original image data Qs buffer FIFO, the original image data Qw buffer FIFO, the original image data Qz buffer FIFO, the coordinate image data X buffer FIFO, and the coordinate image data Y Buffer FIFO and data transmission buffer FIFO, as well as storage controller and readout controller, the purpose of which is to enable the image generation unit to simultaneously complete the writing, storage and readout of image data, and improve the ability of the image generation unit to receive image data rate ,...

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Abstract

The invention provides an FPGA based photon counting detector image production achievement method, relates to the technical field of photoelectric detection and aims at overcoming the shortcomings of an existing achievement method for a space camera photon counting detector image production unit. The FPGA based photon counting detector image production achievement method achieves the image production unit through FPGA software, the hardware demand of a system is reduced, image data transfer interfaces are simplified, and system reliability is improved. Cache FIFO are arranged in front and back of a mass memory so as to achieve a function of achieving concurrent execution of image data receiving and storage and data transmission sending, the continuous shooting demand is met, the image data processing rate of the image production unit is improved, and it is ensured that an imaging system achieves performance index at highest photon counting rate.

Description

technical field [0001] The invention relates to the technical field of photoelectric detection, in particular to an FPGA implementation method of a photon-counting detector image generation unit of a space camera. Background technique [0002] In order to detect short-wavelength weak light signals such as space plasma, space cameras usually use photon counting detectors as sensing elements. The photon counting detector is a detector that converts the incident photon collection into multiple charge signals. The charge signal is shaped and amplified, peak held and sampled through the signal processing circuit to obtain the original image data, and then the original image is converted according to the coordinate calculation formula. The data is converted to coordinate image data. When the space camera takes pictures in the original mode, the image generation unit stores the original image data in the large-capacity memory, and after the picture stops, it is transmitted to the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T1/60
Inventor 王金玲宋克非贺小军
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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