Multi-channel data acquisition system and method

The invention relates to a multi-channel data acquisition system and method, and the system comprises a target number of data acquisition units which are realized based on external clock synchronization, and the target number is dynamically determined according to the demands of a data application scene, so that the multi-channel data acquisition system dynamically expands the data acquisition units based on the demands of the application scene. The time alignment of each path of data is ensured through an external clock; the real-time channelization processing module is used for converting to-be-processed analog signals which are acquired by the data acquisition unit and comprise different frequencies, and processing time domain signals to obtain digital signals of different frequency bands in a frequency domain, and the frequency bands correspond to data application scene requirements; and the switch is used for merging the digital signals acquired by the target number of data acquisition units to obtain me