The invention provides a high-performance multi-channel input / output
satellite comprehensive
electronic interface expansion device which comprises an internal
bus, an interface expansion module, an interface
application module and a power supply module which are electrically connected, wherein the power supply module is connected with the internal
bus, the interface expansion module and the interface
application module; the output port of the interface expansion module comprises seven UART (Universal Asynchronous
Receiver /
Transmitter) sub-serial ports and sixteen GPIO (
General Purpose Input / Output) interfaces which can be connected with the interface
application module to realize input and output of interfaces such as two RS485 interfaces, four RS422 interfaces, eight analog acquisition interfaces and sixteen power supply driving output interfaces; the seven paths of sub-serial ports are divided into three paths of first-stage sub-serial ports and four paths of second-stage sub-serial ports, the working mode is a
time division multiplexing mode, and the efficiency can reach 94.1% and 88.2%; a core
processing chip does not need to be newly added, and an on-
orbit maintenance circuit of the core
processing chip is reduced; based on a CPCI interface, rapid iterative updating can be realized; the output interfaces are rich in variety and large in number, and can meet the requirements of most
satellite-borne equipment; the device is efficient in function, can be replaced quickly, and has great practical value.