岩矿石电性实验宽频序列信号发送机设计

Design of rocks and minerals electrical properties of experimental serial signal transmitter

针对地球物理学基础物性测试实验工作中拥有自主知识产权实验用仪器发展缓慢，实验用仪器型号少的现状，利用复杂可编程逻辑器件（CPLD）为波形产生单元、ARM处理器为仪器主控单元设计了步长为对数等间距，频点间以2/3倍频点进行加密、带宽为0．001～1000 Hz、可选多档恒流输出的频率域岩矿石电性实验序列信号发送机．室内实验与模拟器件实验表明：该信号源输出电流恒定、波形频率准确，可用于实际实验工作．

For basic physical testing experimental work,it is a fact that the testing experimental apparatus with independent intellectual property rights developed slowly and the types are limited,So an experimental signal transmitter was designed,for electrical properties of rocks and minerals,which had logarithmic equidistant step and during spacing points encrypted as 2/3 frequency doubling,and its bandwidth was between 0.001Hz to 1 000 Hz and it was with optional multi-range constant-current output.After both laboratory experiment and analog experiments,the results showed that the signal source sends constant current and the accurate waveform frequency.In all,the transmitter can be used for practical experimental work.