船用電子應急車令，是應用于船舶的一種駕駛控制的電子通信設備，它是船上駕駛
室主控車令控制器的備份控制設備，可以通過車令命令向“機艙”和“集控室”發出指令，使船舶在任何情況下正常行駛。進入90 年代以來，各類大中型船舶上紛紛要求安裝應急車令系統，以保證船只在航行中的絕對安全，所以電子應急車令系統在這種情況下應運而生且發展迅速。
關鍵詞：車令；模塊；端口；電路
Abstract: Electron emergency vehicle orders used in new type ship are a sort of steer control
electron correspond equipments used in shipping. They are backup control equipments of main control vehicle orders of cab, It enable shipping run in gear at any case through instructions whichgiven from engine room and collecting control room. The emergency vehicle orders are installed in lot of shipping in recent years, which ensure absolutely safety of the sailing, so that emergency vehicle orders were emerged as the require and develop rapidly.
Keywords: vehicle orders, module, interface, circuit