Multi-channel data acquisition system development based on third-party PCI cards

Using virtual instrument technology,solution of multi-channel data acquisition system is put forward from the point of engineering application ; The system consists of hardware support and data acquisition ; Hardware support part consists of the measured objects,sensors and conditioning circuits,Power supply for the circuit ,Electrical circuit is controlled and achieved through the relay ; Multi-channel data acquisition consists of industrial computer,input/output cards and relative software;Software system of the multi-channel data acquisition is implemented in detail. The practice shows the system has good detection performance and scalability.