Body fat measuring apparatus, system and pairing method thereof

A body fat measuring system composed of a portable electronic device and a body fat measuring device, comprising:

• a wireless transmission unit, a measuring unit, a portable electronic device or a display unit with a touching function, a storage unit, and a processor, wherein the measuring unit determines a current body weight and a current impedance of a user as a current analysis data set;
• a portable electronic device or a display unit with a touching function is provided for creating a user name and a user characteristic information related to the user name;
• the storage unit stores a user name, a user characteristic information related to the user name, and a plurality of recorded analysis data sets corresponding to the user names cumulatively;
• the processor reads the current body weight, the current impedance and the plurality of recorded analysis data sets to perform an algorithm process to obtain a plurality of distances, then the plurality of distances are sorted sequentially from a minimum value to a maximum value;
• the processor selects the K (K is 1-10) values out of the plurality of distances upwardly from the minimum value of the sorting result and the K (K is 1-10) values out of the plurality of distances is then performed a grouping operation according to the user names related to the plurality of recorded analysis data sets, and the maximum result of the grouping operation is taken out, in which the user name of the maximum result is paired with the user, a body fat information is obtained by calculating with the current analysis data set and the user characteristic information related to the user name which is paired with the user, and then the current analysis data set is stored in the plurality of recorded analysis data sets of the storage unit corresponding to the user name;
• and the portable electronic device which is wirelessly connected with the wireless transmission unit, transfers the user name and the user characteristic information related to the user name to the body fat measuring device, or receives the body fat information via the wireless transmission unit.