Design And Implementation Of Filtering And Amplification Circuit In Biological Intelligence Multi-channel

Multi-channel physiological recorder is a New generation of biological laboratory equipment which use the latest multimedia computer technology, advanced electronic technology and DSP(Digital signal processing) technology. And it is also the Ideal experimental products of the Teaching basic medical laboratory equipment. Multi-channel physiological recorder is the equipment which can be controled by program and it has 8 channels, each of which has the function:Collection, amplification, display, record, Analysis. The recorder has a high precision, High reliability and Wide Scope Programmable stimulator in it. And it is the Replacement of Experimental system of traditional medicine. This instrument is a Data collection and analysis instruments which has New architecture for Biological research and teaching, it use the USB bus and FPGA technology. The Experimental system is consist of PC,Hardware and Software. This system based on WIN2000/WINXP Standard software and send the data to The upper application completely and effictively, the collected data can be Imported into other applications of Windows, so,it is very Facilitate for data sharing.There are many Factors in our body which effect Biomedical Signal, these factors have the features such as Weak signal, big Strong noise, Low frequency range and Strong randomness, so we will Design a Stable,efficient and Low Noise Signal amplifier system to Meet Design requirements. In the recorder, the collected Electric signal will be amplified,Filtered(Including High-pass filter, Low-pass filter, Limited to specific frequency wave).Because of the Amplifier module and other modules'Independent screening, it can void the Interferences from other modules, and then Digitized the signals by AD converter module. At last, sending these signals to the computer by USB2.0 cable.During I practise in Henan Huanan Medical Science and Technology Co. Ltd,I develop the hardware of this product. And I cooperate with my coolleagues and schoolmates to design the Amplifier Circuit which can amplify the Organisms small signal based on the Performance and Technical parameters of Similar products, I cooperate with the Company engineers and formulate the Technical parameters of our product, and at last we Developed the circuit board and debug it.