| 摘要 |
A wireless electric system of construction machinery and a maintenance system of construction machinery using the same are provided to increase convenience and efficiency of works and to minimize a short circuit of an electric line by wireless radiotelegraphy between various electric components or electric modules in construction machinery. A wireless electric system of construction machinery contains: a main controller(300) comprising a main control unit(400), a communication control unit(402), a storage unit(406), a ROM(412) and a RAM(414) and controlling the controlled devices of construction machinery automatically using the stored automatic control programs of various construction machinery in a storage unit; an internal wireless network(302) formed by the main control unit to make wireless data communication among a control panel, a main controller and an auxiliary controller; plural control panels(310) comprising a panel control unit(420), an input unit(422) and a short-distance wireless communication control unit(424); an MDU(Machine Display Unit, 312) comprising an MDU control unit(440), a display unit(442), an input unit(448) and a short-distance wireless communication control unit and displaying various information of construction machinery to operators; and plural auxiliary controllers(320) comprising an auxiliary control unit(430), a short-distance wireless communication control unit(432), a driving control unit(434) and a sensor control unit(436), and receiving wireless control signals transferred from the main controller and analyzing to perform input/output control, operational control, malfunction detection and automatic control.
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