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可编程信号处理器的低功耗设计
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作者 陈健 《半导体技术》 CAS CSCD 北大核心 2001年第4期1-4,共4页
可编程信号处理器已获得广泛应用,随着VLSI技术的发展,现在已可利用信号处理器实现SOC功能。实现SOC功能还必须降低处理器的功耗。本文首先叙述可编程信号处理器降低功耗的各种途径,然后介绍低功耗可编程处理器的结构设计... 可编程信号处理器已获得广泛应用,随着VLSI技术的发展,现在已可利用信号处理器实现SOC功能。实现SOC功能还必须降低处理器的功耗。本文首先叙述可编程信号处理器降低功耗的各种途径,然后介绍低功耗可编程处理器的结构设计,最后对最新的TMS320C55X的低功耗性能进行分析。 展开更多
关键词 可编程信号处理器 低功耗 VLSI 专用集成电路 设计
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新一代天气雷达系统计算机及网络故障探究 被引量:1
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作者 杨帆 《电子世界》 2019年第8期78-79,共2页
本文围绕新一代多普勒天气雷达系统,就该天气雷达系统计算机、网络等部件常出现的故障问题做了分析,探究了故障原因,并就如何消除故障提了几点意见建议。旨在提升新一代天气雷达系统运行效率,为新一代天气雷达系统的运行创造一个安全的... 本文围绕新一代多普勒天气雷达系统,就该天气雷达系统计算机、网络等部件常出现的故障问题做了分析,探究了故障原因,并就如何消除故障提了几点意见建议。旨在提升新一代天气雷达系统运行效率,为新一代天气雷达系统的运行创造一个安全的环境。新一代天气雷达系统的核心是一系列相连的数据处理器,如硬件信号处理器(HSP)、产品生成处理器(RPG)、PDA状态控制处理器(RDASC)、产品显示处理器(PUP)、可编程信号处理器(PSP),这些数据处理器通过网络系统彼此连接在一起,相互协作、相互影响,若其中的一个部件出现故障,就将给整个系统的运行造成影响,也会影响雷达产品的生成与传输。 展开更多
关键词 天气雷达系统 故障原因 网络系统 计算机 可编程信号处理器 系统运行效率 数据处理器 新一代天气雷达
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A fast digital timing and analysis system based on real-time dCFD technique for nuclear physics experiments 被引量:1
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作者 SUN Jian LIANG Hao +1 位作者 XIE ShuXin CHENG Bin 《Science China(Technological Sciences)》 SCIE EI CAS 2012年第9期2651-2655,共5页
In this paper a fast digital real-time spectrometer was developed for timing and analysis of nuclear pulse signals. The hardware system design and algorithm implementation with field-programming gate array (FPGA) an... In this paper a fast digital real-time spectrometer was developed for timing and analysis of nuclear pulse signals. The hardware system design and algorithm implementation with field-programming gate array (FPGA) and digital signal processor (DSP) were introduced. The performance of the digital constant fraction discrimination (dCFD) platform was experimentally tested with Agilent 80 MHz function/arbitrary waveform generator and LaC13:Ce3+ scintillator detector for 22Na positron annihilation gamma spectroscopy. The amplitude and time information of "/photon was online obtained. The energy resolution could be 5.525% and the timing resolution 293.75 ps, the system error estimation of dCFD approach was also studied. The results showed that this spectrometer achieved a timing resolution close to that of traditional CFD timing resolution with a more sim- plified system structure. 展开更多
关键词 digital constant fraction discrimination real-time processing FPFA DSP experimental spectrum measurement
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A digital energy spectroscopy based on FIR filter 被引量:4
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作者 XIE ShuXin LIANG Hao +1 位作者 SUN Jian YU XiaoQi 《Science China(Technological Sciences)》 SCIE EI CAS 2011年第1期251-254,共4页
We designed a universal digital energy spectroscopy based on online digital signal processing. A prototype system was built and tested. Signals from radiation detectors were processed via a digital filter whose coeffi... We designed a universal digital energy spectroscopy based on online digital signal processing. A prototype system was built and tested. Signals from radiation detectors were processed via a digital filter whose coefficients could be modified without changing the hardware. The paper introduces the hardware design of the digital energy spectroscopy system as well as the full set of software consisting of the selection of the coefficients of the finite impulse response (FIR) filter and the coding in the field-programmable gate array (FPGA). The system was tested with the high purity germanium (HPGe) detector. The results showed that this prototype can achieve an energy resolution close to that of a traditional multi-channel analyzer (MCA) with a much higher counting rate. 展开更多
关键词 digital energy spectroscopy FPGA FIR filter online digital processing spectrum measurement
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