Signal acquisition system

The utility model provides a signal acquisition system. Comprising an FPGA module, an input module, an output module, a power supply module, a serial port module and a control computer, the power supply module is connected with a 24V power supply and is respectively connected with an input acquisition module, the FPGA module and the output module, the input acquisition module inputs an acquisition switching value and inputs the switching value to the FPGA module, the output module is connected with the FPGA module to output a control signal, and the control computer is connected with the FPGA module. And the control computer is connected with the FPGA module through the serial port module. The power supply filter circuit can effectively remove burr signals attached to power supply input, enables input and output signals of equipment to be clearer and more stable, and also can protect some sensitive and vulnerable devices in a signal collector from being damaged by large-voltage burrs, the serial port circuit