| 摘要 |
<p>A system for locating a breaking point of a transmission line using a highly accurate time signal transmitted from an artificial satellite while adopting a digital data processing method. This system comprises a master station and a slave station, each comprising a surge detection circuit for detecting surge voltage resulting from breaking, a GPS receiver for supplying a predetermined frequency pulse and a reset signal via a radiowave from the artificial satellite, and time counter/time base to be reset every second on receiving the signal from the GPS receiver and converting the predetermined frequency pulse from the GPS receiver into a binary coded digital signal. By latching the count of the counter by means of the event pulse generated when the surge voltage is detected and changing the count into a digital code, the signal on the part of the slave station is transmitted to the master station, whereas a processor controller of the master station compares the signals of both stations to compute the distance up to the breaking point.</p> |
