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学者姓名：冯忱晖
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Abstract ：
高线性度、高精度的模数转换器(ADC)在传感器应用中具有重要作用.设计了一款针对低频信号检测的ZOOM ADC,其带宽为1 kHz.该ADC架构结合了 5 bit的SAR ADC和12 bit的二阶增量型Sigma Delta ADC,利用增量型Sigma Delta ADC的周期性复位特征及采样前端引入的采样保持模块,提升了整体ADC的线性度.在SAR ADC设计中,采用了基于共模电压的电容开关时序的数模转换器(DAC)阵列;在增量型Sigma Delta ADC设计中,采用高能效电流饥饿型运算放大器进行积分器设计,有效降低了系统功耗.采用SMIC 40 nm工艺,系统时钟为256 kHz,1 kHz带宽下的信噪比为93.2 dB、有效位数为15.19 bit.等间隔输入模拟直流信号,ZOOM ADC的输入输出曲线呈现出良好的线性度.
Keyword ：
共模电压 共模电压 模数转换器 模数转换器 电流饥饿型 电流饥饿型 高线性度 高线性度
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| GB/T 7714 | 刘才盛 , 冯忱晖 . 一种高线性度高精度的ZOOM模数转换器设计 [J]. | 仪表技术 , 2025 , (1) : 30-34 . |
| MLA | 刘才盛 等. "一种高线性度高精度的ZOOM模数转换器设计" . | 仪表技术 1 (2025) : 30-34 . |
| APA | 刘才盛 , 冯忱晖 . 一种高线性度高精度的ZOOM模数转换器设计 . | 仪表技术 , 2025 , (1) , 30-34 . |
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Abstract ：
The design can measure and display other parameters such as the modulation system of the measured signal output by the signal source, identify and display the modulation mode of the measured signal, and output the demodulation signal. The measurement module is composed of an automatic gain amplifier circuit, a broadband amplifier, a low-pass filter circuit, a DDS signal generation circuit, an amplification circuit, and a display circuit. The working principle of the signal modulation measuring device is that the demodulated AM signal is obtained after the spectrum is transmitted by the multiplier, and the high-frequency signal is filtered out by the low-pass filter and amplified by the fixed gain amplifier. After the amplification circuit, the output waveform is sampled by the onboard ADC of MSP432E401Y, and then the fast Fourier transform is performed to obtain various parameters, which are finally displayed on the serial screen. © Published under licence by IOP Publishing Ltd.
Keyword ：
Amplitude modulation Amplitude modulation Broadband amplifiers Broadband amplifiers Fast Fourier transforms Fast Fourier transforms Low pass filters Low pass filters
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| GB/T 7714 | Gao, Zekun , Zhao, Xuewen , Ji, Mingzhi et al. Signal modulation system measuring device [C] . 2022 . |
| MLA | Gao, Zekun et al. "Signal modulation system measuring device" . (2022) . |
| APA | Gao, Zekun , Zhao, Xuewen , Ji, Mingzhi , Zhou, Miaolan , Feng, Chenhui . Signal modulation system measuring device . (2022) . |
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Abstract ：
The design can measure and display other parameters such as the modulation system of the measured signal output by the signal source, identify and display the modulation mode of the measured signal, and output the demodulation signal. The measurement module is composed of an automatic gain amplifier circuit, a broadband amplifier, a low-pass filter circuit, a DDS signal generation circuit, an amplification circuit, and a display circuit. The working principle of the signal modulation measuring device is that the demodulated AM signal is obtained after the spectrum is transmitted by the multiplier, and the high-frequency signal is filtered out by the low-pass filter and amplified by the fixed gain amplifier. After the amplification circuit, the output waveform is sampled by the onboard ADC of MSP432E401Y, and then the fast Fourier transform is performed to obtain various parameters, which are finally displayed on the serial screen.
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| GB/T 7714 | Zekun Gao , Xuewen Zhao , Mingzhi Ji et al. Signal modulation system measuring device [J]. | Journal of Physics:Conference Series , 2022 , 2395 (1) . |
| MLA | Zekun Gao et al. "Signal modulation system measuring device" . | Journal of Physics:Conference Series 2395 . 1 (2022) . |
| APA | Zekun Gao , Xuewen Zhao , Mingzhi Ji , Miaolan Zhou , Chenhui Feng . Signal modulation system measuring device . | Journal of Physics:Conference Series , 2022 , 2395 (1) . |
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现有便携式心电采集系统需要低功耗高分辨率的模拟数字转换模块,虽然基于脉冲宽度调制的模拟信息转换器(AIC)可以有效降低系统的采样速率,但是该系统量化部分的转化时钟与量化精度成正比,因此存在功耗过高的问题。依据心电信号的能量不均衡特性,提出一种基于功率熵的精度可调时间-数字转换模块(TDC)设计方法。以能量最大化作为设计准则的基本思想,通过分析ECG信号的功率谱熵,确定系统观测向量所需的最小量化精度,实现AIC时间编码系统的优化设计。测试结果表明,该设计方法能够在压缩比为4,重构信噪比为38.91 dB,重构精度为0.36%的情况下,在采样心电信号的同时减少了80%的TDC内部时钟动态翻转,从而...
Keyword ：
亚奈奎斯特采样 亚奈奎斯特采样 功率谱熵 功率谱熵 压缩感知 压缩感知 时间-数字转换 时间-数字转换 模拟信息转换器 模拟信息转换器 脉冲宽度调制 脉冲宽度调制 随机解调器 随机解调器
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| GB/T 7714 | 池博浩 , 江浩 , 钱慧 et al. 用于心电信号的能量最大化模拟信息转换系统 [J]. | 仪器仪表学报 , 2021 , 42 (03) : 213-220 . |
| MLA | 池博浩 et al. "用于心电信号的能量最大化模拟信息转换系统" . | 仪器仪表学报 42 . 03 (2021) : 213-220 . |
| APA | 池博浩 , 江浩 , 钱慧 , 冯忱晖 . 用于心电信号的能量最大化模拟信息转换系统 . | 仪器仪表学报 , 2021 , 42 (03) , 213-220 . |
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Abstract ：
现有便携式心电采集系统需要低功耗高分辨率的模拟数字转换模块,虽然基于脉冲宽度调制的模拟信息转换器(AIC)可以有效降低系统的采样速率,但是该系统量化部分的转化时钟与量化精度成正比,因此存在功耗过高的问题.依据心电信号的能量不均衡特性,提出一种基于功率熵的精度可调时间-数字转换模块(TDC)设计方法.以能量最大化作为设计准则的基本思想,通过分析ECG信号的功率谱熵,确定系统观测向量所需的最小量化精度,实现AIC时间编码系统的优化设计.测试结果表明,该设计方法能够在压缩比为4,重构信噪比为38.91 dB,重构精度为0.36％的情况下,在采样心电信号的同时减少了 80％的TDC内部时钟动态翻转,从而有效降低功耗.
Keyword ：
亚奈奎斯特采样 亚奈奎斯特采样 功率谱熵 功率谱熵 压缩感知 压缩感知 时间-数字转换 时间-数字转换 模拟信息转换器 模拟信息转换器 脉冲宽度调制 脉冲宽度调制 随机解调器 随机解调器
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| GB/T 7714 | 池博浩 , 江浩 , 钱慧 et al. 用于心电信号的能量最大化模拟信息转换系统 [J]. | 仪器仪表学报 , 2021 , 42 (3) : 213-220 . |
| MLA | 池博浩 et al. "用于心电信号的能量最大化模拟信息转换系统" . | 仪器仪表学报 42 . 3 (2021) : 213-220 . |
| APA | 池博浩 , 江浩 , 钱慧 , 冯忱晖 . 用于心电信号的能量最大化模拟信息转换系统 . | 仪器仪表学报 , 2021 , 42 (3) , 213-220 . |
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Abstract ：
The existing schemes of analog-to-information converter (AIC) typically employ analog circuitry. However, the analog modules tend to introduce non-linearity into the system. This paper presents a new scheme of AIC with a pre-quantized random demodulator (RD) which is dominated by digital technology for overcoming non-linearity. The analog multiplier is replaced by the amplitude-to-pulse converters to achieve the multiplication of input signals with pseudo-random sequence and the conversion of voltage amplitude to pulse width. Then, only all-digital modules such as counters and subtracters are required to complete the quantization, integration, and sampling for the analog-to-information conversion, which facilitates to greatly reduce the non-linearity. The experimental results demonstrate the accuracy improvement of the analog-to-information conversion by pre-quantized RD. © 2020 IEEE.
Keyword ：
Aircraft propulsion Aircraft propulsion Demodulators Demodulators VLSI circuits VLSI circuits
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| GB/T 7714 | Feng, Chenhui , Qian, Hui , Wang, Zhongfeng . An implementation of pre-quantized random demodulator based on amplitude-to-pulse converter [C] . 2020 : 206-211 . |
| MLA | Feng, Chenhui et al. "An implementation of pre-quantized random demodulator based on amplitude-to-pulse converter" . (2020) : 206-211 . |
| APA | Feng, Chenhui , Qian, Hui , Wang, Zhongfeng . An implementation of pre-quantized random demodulator based on amplitude-to-pulse converter . (2020) : 206-211 . |
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物理不可克隆函数(PUF)是指利用半导体制造工艺中不可避免的固有偏差,产生具有独特性和稳定性的响应结果,使集成电路芯片具有不可克隆的特性.提出了一种新型的基于D触发器的物理不可克隆函数.利用D触发器建立的时间随机分布函数产生PUF激励输出响应,并通过D触发器对的差分结构提高输出结果的准确性.实验结果显示,此PUF的性能近乎理想.与主流PUF相比,基于D触发器的PUF明显增强了设计的唯一性.
Keyword ：
D触发器 D触发器 信息安全 信息安全 物理不可克隆函数 物理不可克隆函数
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| GB/T 7714 | 张培勇 , 袁晓东 , 王雪洁 et al. 基于D触发器的物理不可克隆函数 [J]. | 浙江大学学报（理学版） , 2019 , 46 (1) : 32-38 . |
| MLA | 张培勇 et al. "基于D触发器的物理不可克隆函数" . | 浙江大学学报（理学版） 46 . 1 (2019) : 32-38 . |
| APA | 张培勇 , 袁晓东 , 王雪洁 , 冯忱晖 , 李宜珂 . 基于D触发器的物理不可克隆函数 . | 浙江大学学报（理学版） , 2019 , 46 (1) , 32-38 . |
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This study aims to assess extremely low frequency electromagnetic field (ELF-EMF), which is similar to Schumann resonance (SR) frequency. Schumann resonance frequency which is part of the geomagnetic field frequency, affects to mung beans to increase germination rate and early growth. The aim of the study is to evaluate the effects of SR ELF-EMF on mung beans germination rate and growth rate. SR ELF-EMF pretreatment increases the germination rate since the applied SR ELF-EMF promotes level of Ca2+ and K+ contents. Three groups of mung beans were exposed by SR ELF-EMF of 0.3 mT at swapped frequency 7.83 Hz +/- 0.1Hz. The experiment results show that germination rates of experimental groups with SR ELF-EMF exposing have 8% to 23.3% higher than control groups. Moreover, the length of stem of the experimental groups have the maximum 14% longer than control groups after 72 hours growth.
Keyword ：
extremely low frequency electromagnetic field (ELF-EMF) extremely low frequency electromagnetic field (ELF-EMF) germination rate germination rate Schumann resonance frequency Schumann resonance frequency
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| GB/T 7714 | Huang, Pao-Cheng , Tang, Jing-Yau , Feng, Chen-Hui et al. Influences of Extremely Low Frequency Electromagnetic Fields on Germination and Early Growth of Mung Beans [C] . 2018 . |
| MLA | Huang, Pao-Cheng et al. "Influences of Extremely Low Frequency Electromagnetic Fields on Germination and Early Growth of Mung Beans" . (2018) . |
| APA | Huang, Pao-Cheng , Tang, Jing-Yau , Feng, Chen-Hui , Cheng, Po-Yuan , Jang, Ling-Sheng . Influences of Extremely Low Frequency Electromagnetic Fields on Germination and Early Growth of Mung Beans . (2018) . |
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Motion artifact removal is one of the most important issues in portable ECG (electrocardiogram) monitoring. Motion artifacts are usually accompanied by significant baseline drift. Adaptive filtering has been used to filter motion artifacts and baseline drift. The 3-axis acceleration signal is selected as the noise reference signal. Results show that motion artifacts and baseline drift have been removed in filtered ECG, and the QRS complex of the filtered ECG has clearly appeared.
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| GB/T 7714 | Bai, Li-Ming , Fan, Ming-Hui , Feng, Chen-Hui et al. Using an Adaptive Filter to Remove ECG Motion Artifact Interference [C] . 2018 . |
| MLA | Bai, Li-Ming et al. "Using an Adaptive Filter to Remove ECG Motion Artifact Interference" . (2018) . |
| APA | Bai, Li-Ming , Fan, Ming-Hui , Feng, Chen-Hui , Wang, Liang-Hung . Using an Adaptive Filter to Remove ECG Motion Artifact Interference . (2018) . |
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Abstract ：
Motion artifact removal is one of the most important issues in portable ECG (electrocardiogram) monitoring. Motion artifacts are usually accompanied by significant baseline drift. Adaptive filtering has been used to filter motion artifacts and baseline drift. The 3-axis acceleration signal is selected as the noise reference signal. Results show that motion artifacts and baseline drift have been removed in filtered ECG, and the QRS complex of the filtered ECG has clearly appeared. © 2018 IEEE.
Keyword ：
Adaptive filtering Adaptive filtering Adaptive filters Adaptive filters Biomedical signal processing Biomedical signal processing Electrocardiography Electrocardiography
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| GB/T 7714 | Bai, Li-Ming , Fan, Ming-Hui , Feng, Chen-Hui et al. Using an Adaptive Filter to Remove ECG Motion Artifact Interference [C] . 2018 . |
| MLA | Bai, Li-Ming et al. "Using an Adaptive Filter to Remove ECG Motion Artifact Interference" . (2018) . |
| APA | Bai, Li-Ming , Fan, Ming-Hui , Feng, Chen-Hui , Wang, Liang-Hung . Using an Adaptive Filter to Remove ECG Motion Artifact Interference . (2018) . |
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