由于电机运行条件的变化,使得其对应的信号也会出现波动,要实现准确监测,需要可靠的采集手段和传输方式,为此提出基于ARM嵌入式系统的电机多路信号监测及数据采集。利用高精度电压传感器和电流传感器实现对电机信号的采集,ARM处理器构...由于电机运行条件的变化,使得其对应的信号也会出现波动,要实现准确监测,需要可靠的采集手段和传输方式,为此提出基于ARM嵌入式系统的电机多路信号监测及数据采集。利用高精度电压传感器和电流传感器实现对电机信号的采集,ARM处理器构建了无线网络连接机制,在传输控制协议/网际协议(Transmission Control Protocol/Internet Protocol,TCP/IP)的支撑下确保数据实现实时传输,以时间为基础建立电流和电压数据之间的匹配关系,实现对其异常的分析判断。测试结果表明,设计方法可以实现对电机数据的准确采集和有效监测。展开更多
To find a design method for 3D active multichannel silicon microelectrode, a microstructure of active neural recording system is presented, where two 2D probes, two integrated circuits and two spacers are microassembl...To find a design method for 3D active multichannel silicon microelectrode, a microstructure of active neural recording system is presented, where two 2D probes, two integrated circuits and two spacers are microassembled on a 5 mm×7 mm silicon platform, and 32 sites neural signals can be operated simultaneously. A theoretical model for measuring the neural signal by the silicon microelectrode is proposed based on the structure and fabrication process of a single-shank probe. The method of determining the dimensional parameters of the probe shank is discussed in the following three aspects, i.e. the structures of pallium and endocranium, coupled interconnecters noise, and strength characteristic of neural probe. The design criterion is to minimize the size of the neural probe as well as that the probe has enough stiffness to pierce the endocranium. The on-chip unity-gain bandpass amplifier has an overall gain of 42 dB over a bandwidth from 60 Hz to 10 kHz; and the DC-baseline stability circuit is of high input resistance above 30 MΩ to guarantee a cutoff frequency below 100 Hz. The circuit works in stimulating or recording modes. The conversion of the modes depends on the stimulating control signal.展开更多
文摘由于电机运行条件的变化,使得其对应的信号也会出现波动,要实现准确监测,需要可靠的采集手段和传输方式,为此提出基于ARM嵌入式系统的电机多路信号监测及数据采集。利用高精度电压传感器和电流传感器实现对电机信号的采集,ARM处理器构建了无线网络连接机制,在传输控制协议/网际协议(Transmission Control Protocol/Internet Protocol,TCP/IP)的支撑下确保数据实现实时传输,以时间为基础建立电流和电压数据之间的匹配关系,实现对其异常的分析判断。测试结果表明,设计方法可以实现对电机数据的准确采集和有效监测。
基金Supported by Tianjin Municipal Science and Technology Commission(No. 05YFSYSF01700).
文摘To find a design method for 3D active multichannel silicon microelectrode, a microstructure of active neural recording system is presented, where two 2D probes, two integrated circuits and two spacers are microassembled on a 5 mm×7 mm silicon platform, and 32 sites neural signals can be operated simultaneously. A theoretical model for measuring the neural signal by the silicon microelectrode is proposed based on the structure and fabrication process of a single-shank probe. The method of determining the dimensional parameters of the probe shank is discussed in the following three aspects, i.e. the structures of pallium and endocranium, coupled interconnecters noise, and strength characteristic of neural probe. The design criterion is to minimize the size of the neural probe as well as that the probe has enough stiffness to pierce the endocranium. The on-chip unity-gain bandpass amplifier has an overall gain of 42 dB over a bandwidth from 60 Hz to 10 kHz; and the DC-baseline stability circuit is of high input resistance above 30 MΩ to guarantee a cutoff frequency below 100 Hz. The circuit works in stimulating or recording modes. The conversion of the modes depends on the stimulating control signal.
