Patent ID: 9007378
Filing Date: 2015-04-14
Classification: G01S,G06F,G06T,G08B

Abstract:
1. A location tracking system in which a main terminal mounted with a first wireless communication module and a plurality of sub-terminals, each of which is mounted with a second wireless communication module and has an identification code, are configured to conduct wireless communication within a preset range, the main terminal includes a deviation display part that displays the plurality of sub-terminals having the identification code in a different color when at least one of the sub-terminals deviates from a preset safety range and enters a deviation boundary range, and each sub-terminal includes a warning sound output part that receives a control signal sent from the main terminal to output a warning sound when the deviation display part displays the deviation of the sub-terminal, wherein: the deviation display part includes a plurality of lamps that are displayed as numbers on a touch screen of the main terminal, and each of the lamps corresponds to one of the plurality of sub-terminals; the plurality of lamps are arranged in rows and columns so as to be displayed on the touch screen of the main terminal in a manner that is neutral to distances of the corresponding sub-terminals from the main terminal; each of the plurality of lamps is turned green or blue when the corresponding sub-terminal is within the preset safety range under the control of the first micro-computer, and red when the corresponding sub-terminal is within the deviation boundary range beyond the preset safety range under the control of the first micro-computer; the main terminal further includes an enter key that outputs a signal for instructing the first micro-computer to output a control signal for a warning sound to all of the sub-terminals of which the corresponding lamps are turned red; and each sub-terminal further includes a second micro-computer that controls the second wireless communication module and the warning sound output part when receiving the control signal for the warning sound from first wireless communication module by wireless.