文献类型：专利

英文题名：Wireless network based geophysical teaching experiment data collecting device, has amplifying circuit whose end is connected with filter circuit, and output circuit connected with end of follower, where conversion circuit processes output

作者：XIAO H;XU H;YANG W;MAO S;WU Z;LIU Q;WANG J;HUANG S;WANG X

机构：[1]UNIV EAST CHINA SCI & TECHNOLOGY

申请号：CN107170349-A

申请日：2017-07-19

公开日：2017-09-15

语种：英文

收录：DERWENT

摘要：NOVELTY - The device has a constant current source (U1) connected with an analog switch. A front end of an amplifying circuit (U3) is connected with an active filter circuit (U4). An output circuit (U5) is connected with a front end of a follower (U7). An AD conversion circuit (U11) processes output data. The front end of the amplifying circuit is equipped with an amplifier chip INA128. A program-controlled amplifying circuit (U9) is provided with PGA204. A differential amplifier circuit (U10) is provided with LTC6409. USE - Wireless network based geophysical teaching experiment data collecting device. ADVANTAGE - The device realizes experimental teaching of earth physics experiment data so as to understand teacher experiment teaching by students. DESCRIPTION OF DRAWING(S) - The drawing shows a block diagram of a wireless network based geophysical teaching experiment data collecting device. Constant current source (U1) Differential amplifier circuit (U10) AD conversion circuit (U11) Amplifying circuit (U3) Active filter circuit (U4) Output circuit (U5) Follower (U7) Program-controlled amplifying circuit (U9)