Method of communication between contruction equipment and management server

A communication method between contruction equipment and a management server, comprising:

• transmitting, by a diagnostic device of the construction equipment, current location information on the construction equipment to a management server, and requesting a check of a first mobile communication fee which is a fee per unit data when the diagnostic device uses the mobile communication module;
• searching for, by the diagnostic device, a surrounding communication terminal, and requesting a check of a second mobile communication fee, which is a fee per unit data when the corresponding communication terminal is used, from the searched communication terminal;
• selecting, by the diagnostic device, a communication method having the lowest communication fee among the first mobile communication fee, the second mobile communication fee, and a pre-stored satellite communication fee;
• and
• transmitting, by the diagnostic device, state information on the construction equipment by using the selected method.

A diagnostic device of construction equipment, comprising:

• a CAN interface configured to perform CAN communication with a plurality of vehicle control devices included in the construction equipment;
• a GPS module configured to provide location information on the construction equipment;
• a communication module including a near field communication module, a mobile communication module, and a satellite communication module configured to transmit state information on the vehicle control devices to a surrounding communication terminal or a management server;
• a memory configured to store the state information received from the plurality of vehicle control devices, and a satellite communication fee when the satellite communication module is used;
• and
• a controller configured to request the state information from the plurality of vehicle control devices, receive the state information, and transmit the received state information to the communication terminal or the management server,
• wherein the controller requests a check of a first mobile communication fee when the mobile communication module is used by transmitting current location information on the construction equipment to the management server, requests a check of a second mobile communication fee from the communication terminal when the corresponding communication terminal is used, and selects a communication method having the lowest communication fee among the first mobile communication fee, the second mobile communication fee, and a pre-stored satellite communication fee.