Portable ecg data acquisition has the functions of ecg signal amplification and pre - data processing 完成心电信号的采集,放大, a d转换,滤波等功能。
Some commercial odor sensors and their performance are introduced and compared . then the three key parts of electronic nose : sensors array , signal amplification circuit and ad board are also introduced 介绍了本课题中采用的电子鼻硬件系统的三个组成部分传感器阵列、信号调理电路和数据采集卡。
The translocation of gq has been proposed as one of the molecular mechanisms to control photoreceptor sensitivity . its role is molecular switch and signal amplification in photo - electro transduction Gq蛋白亚基的移位被认为是控制感光细胞光敏性的重要分子机制之一,在光电传导中起分子开关和信号放大作用。
The system consists of five units : ecg monitor , microcontroller and a / d converter , home network gateway and medical information management . ecg monitor has the function of ecg signal amplification 系统由五部分组成:心电检测单元,单片机控制及a d转换单元,家庭无线传输单元,家庭嵌入式网关及医院数据管理单元。
4 . pulse signal is researched when amplified by edfa . for signal with a frequency of 10 khz , the gain is about 3db higher than sequence signal amplification , but in time domain , aberrance occurred with the amplified signal 4 .建立了edfa非稳态放大模型,对频率为10khz的脉冲信号进行了实验分析,结果表明,其小信号增益比连续光放大提高了3db ,但输出脉冲存在畸变。
Hardware design , the main part of tlle system , stresses the signal regulating methods such as signal amplification , channel choice and am transformation as we1l as the measure of usual parameters such as ac & dc electric parameters , contact resistance , time , temperature and practical signal transform circuit , etc . furthermore , the anticipated functions have been proved by practical use 其中硬件部分主要侧重于信号调理即信号的放大、通道选择、模数转换以及各测试量包括直流电参数、交流电参数、接触电阻、时间以及温度的测试方法以及具体的信号变换电路,并以生产出实际产品的方式验证了结果。