Data acquisition device for servo mechanism test bench

The utility model provides a data acquisition device for a servo mechanism testboard, which comprises an ARM (advanced RISC machine) data acquisition box, an FPGA (field programmable gate array) data acquisition unit, a miniature relay, a pressure transmitter, a PLC (programmable logic controller), OPC (optical proximity correction) acquisition software and a data acquisition module. The micro relay converts switching value signals of the servo mechanism test bench into high and low level signals which can be acquired, and the ARM data acquisition box is matched with a high-precision signal processing and AD conversion circuit and an FPGA data acquisition unit to complete multi-channel analog quantity acquisition and multi-channel digital quantity data acquisition. And the PLC is matched with OPC acquisition software and the data acquisition module to convert a hardware circuit signal into a system digital signal to finish data acquisition. The device can realize high-speed, high-precision, extensible, conven