Multi-protocol data acquisition gateway

The utility model relates to a multi-protocol data acquisition gateway. The multi-protocol data acquisition gateway in the utility model includes a central microprocessor, a power source module, a GPRS module, a communication interface, a serial interface, a JTAG debugging interface, a clock module and an LCD module. The central microprocessor connects with the power source module, the signal acquisition module, the GPRS module, the communication interface, the serial interface, the JTAG debugging interface, the clock module and the LCD interface separately. The multi-protocol data acquisition gateway can be used in compatible with a prior analog quantity acquisition and output module and a prior digital quantity acquisition and output module, so as to realize the expansion of acquisition quantity. Thus, the system is expanded on a basis of increasing no hardware cost of a main board, and the development period is shortened and hardware cost is reduced.