对传感器信号进行数据采集，没用daq助手，自己编写的vi，方便大家学习采集的内部过程，功能包括，采样设置，信号阈值触发信号停止采集，采集通道设定，数据保存。外设为usb9234NI采集卡。-Sensor signal data acquisition, useless daq assistant vi, I have written to facilitate them to learn the process of acquisition of internal functions including sample set signal threshold trigger signal to stop the acquisition, acquisition channel settings, save the data. The peripheral as usb9234NI acquisition card.