核电子学与探测技术
覈電子學與探測技術
핵전자학여탐측기술
NUCLEAR ELECTRONICS & DETECTION TECHNOLOGY
2015年
1期
36-39,44
,共5页
裂变室%宽量程%数字化%FPGA
裂變室%寬量程%數字化%FPGA
렬변실%관량정%수자화%FPGA
fission chamber%wide range%digital%FPGA
实时准确地测量反应堆的中子通量变化状况，对于确保反应堆的安全运行有着重要意义。基于模拟测量系统存在的一些不足，设计一种数字化的宽量程裂变室输出信号处理系统。该数字化信号处理系统将裂变室的脉冲和坎贝尔两种工作模式相结合，利用高速ADC对裂变室输出脉冲信号数字化，在FPGA中运用数字信号处理算法实现两种工作模式的信号处理，并仿真了裂变室的输出脉冲信号导入任意波形信号发生器模拟中子信号源，用于对处理算法的初步验证。测试结果表明数字化处理系统线性度和性能良好。
實時準確地測量反應堆的中子通量變化狀況，對于確保反應堆的安全運行有著重要意義。基于模擬測量繫統存在的一些不足，設計一種數字化的寬量程裂變室輸齣信號處理繫統。該數字化信號處理繫統將裂變室的脈遲和坎貝爾兩種工作模式相結閤，利用高速ADC對裂變室輸齣脈遲信號數字化，在FPGA中運用數字信號處理算法實現兩種工作模式的信號處理，併倣真瞭裂變室的輸齣脈遲信號導入任意波形信號髮生器模擬中子信號源，用于對處理算法的初步驗證。測試結果錶明數字化處理繫統線性度和性能良好。
실시준학지측량반응퇴적중자통량변화상황，대우학보반응퇴적안전운행유착중요의의。기우모의측량계통존재적일사불족，설계일충수자화적관량정렬변실수출신호처리계통。해수자화신호처리계통장렬변실적맥충화감패이량충공작모식상결합，이용고속ADC대렬변실수출맥충신호수자화，재FPGA중운용수자신호처리산법실현량충공작모식적신호처리，병방진료렬변실적수출맥충신호도입임의파형신호발생기모의중자신호원，용우대처리산법적초보험증。측시결과표명수자화처리계통선성도화성능량호。
The real-time and accurate measurement of reactor neutron flux is directly related to safe operation of the reactor.Neutron flux measurement system with fission chamber based on the analog technology had some shortage, a fission chamber of digital output signal processing system was designed.The combination of two kinds of fission chamber working mode which is pulse and Campbell were applied in this system.Using high-speed ADC digitalized signal from the fission chamber, FPGA could be used in a variety of digital signal pro-cessing algorithms.And using MATLAB simulated output pulse signal of the fission chamber, which imported arbitrary waveform signal generator as neutron source, to be used in a preliminary validation of the algorithm. Test results showed that the digital processing system had good linearity and good performance.
