A high-speed acquisition board and acquisition processing method based on electronic filtering technology
A filter technology and high-speed acquisition technology, applied in the field of nuclear physics, can solve the problems of affecting the detection accuracy of the system and difficult implementation, and achieve the effects of improving the utilization rate of pulse signals, wide application range, and strong programmability
Active Publication Date: 2019-02-22
杭州率通电子科技有限公司
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Problems solved by technology
It can be seen that the processing difficulty of pulse stacking mainly lies in the hardware, which requires high performance such as data transmission speed and computing speed of the system, and it is difficult to realize
[0004] Discarding the signal with pulse accumulation, although avoiding a large number of calculations, affects the overall detection accuracy of the system
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[0052] Such as figure 1 Shown, a kind of high-speed acquisition board based on electronic filter technology of the present invention comprises ARM chip, client, server and preamplifier, follower, differential circuit, primary amplifier, secondary amplifier, reverse amplifier, Analog-to-digital converter (AD), Field Programmable Gate Array (FPGA), GPU; The analog-to-digital converter is used to convert the analog signal output by the front end into a digital signal through sampling, quantization, and encoding processes; the FPGA is used to convert the The digital signal output by the analog-to-digital converter is filtered and shaped and piled up for recognition, and the data that pulse piles up and can be decomposed is transmitted to the GPU, and the GPU performs despectral operation; the FPGA and GPU are transmitted to the ARM chip through the serial port. At the same time, the client sends instructions to the FPGA or GPU to control the processing process of the pulse signal...
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The invention discloses a high-speed collection board based on electronic filtering technology, and a collection processing method. The collection board comprises an ARM chip, a client, a server, a pre-amplifier, a follower, a differentiating circuit, a first stage amplifier, a second stage amplifier, a reverse amplifier, an analog-digital converter, an FPGA and a GPU, wherein the pre-amplifier, the follower, the differentiating circuit, the first stage amplifier, the second stage amplifier, the reverse amplifier, the analog-digital converter, the FPGA and the GPU are sequentially connected. The FPGA and the GPU are connected to the client through a serial port and the ARM chip, and the client transmits an instruction to the FPGA or the GPU, and controls the processing process of a pulse signal. The client and the server carry out the bidirectional communication through a network. The collection board makes the most of the GPU to support floating calculation, and is high in programmability. The collection board achieves the multi-thread calculation, and is high in calculation speed. The collection board is high in data transmission speed. In order to solve a problem of pulse accumulation, the method provides the reliable hardware basis. The collection board can overcome the technical difficulty of pulse accumulation, improves the utilization rate of the pulse signals, and finally improves the detection precision of a system.
Description
technical field [0001] The invention belongs to the field of nuclear physics, including the fields of nuclear medical treatment, nuclear geological exploration, industrial detection, etc., and in particular relates to a high-speed acquisition board and an acquisition processing method based on electronic filtering technology. Background technique [0002] At present, common X-ray and nuclear particle acquisition boards do not have the function of spectrum analysis, but only judge the accumulation of pulses. If it is judged as pulse accumulation, the accumulated pulses will be discarded, and the unaccumulated pulses will be kept. Although this approach ensures the accuracy of the signal, it reduces the utilization rate of the signal, thereby reducing the energy resolution of the system. [0003] Pulse stacking (eg figure 2 ) means that the same detection channel detects multiple nuclear events within the duration of one scintillation pulse. The higher the count rate, the mo...
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IPC IPC(8): G05B19/042
CPCG05B19/042
Inventor 李福生
Owner 杭州率通电子科技有限公司