A distributed data acquisition system with smart connector plugs powered by the Ethernet cable

A distributed multichannel data acquisition system based on the IEEE802.3af protocol has been developed to address the need and trend of the data acquisition of the full scale static or fatigue test of the aircraft. The system is powered by the Ethernet network cable, the sensor cable of the system has a smart connector plug which allows the system to identify the sensor cable. The amount of the power cable and the connecting work of sensor cable in the test field can be reduced obviously. This distributed data acquisition system has been used in the full scale static and fatigue test of some sorts of aircraft successfully, the results show that the reliability of distributed data acquisition system has been improved a lot.