| 摘要 |
PROBLEM TO BE SOLVED: To make every time calculation of the number of revolution unnecessary by indicating the coincidence times of the measured position and reference position with an indication means of a master machine recovering and indicating the data of the measured position and position measurement time transmitted by a slave machine. SOLUTION: A slave machine 1 starts position measurement after a position measurement means 11 takes in a set ID, and takes in the longitude value and latitude value of the self-position measured at every second and position measurement time, which are sent with a wireless communication means together with the ID. The data from the slave 1 is received with the receiver means 21 of the master 2. Here, if the indicator 23 of the master 2 is operated with an operation switch 25 and reference position direction of the surrounding counts is input, then it sets the longitude value and latitude value of the reference position. Then the master 2 receives the data from each slave 1 and the indicator 23 indicates the coincidence times when the position measured by the slave 1 and the set reference position coincided. By this, the calculation of the number of revolution at every moment becomes unnecessary. |
