| 摘要 |
PURPOSE: To enhance the reliability of a circuit in the remote inspection within a container by separating a pulser circuit generating an exciting signal corresponding to a trigger signal and a transducer circuit supplying a response signal to a receiving circuit by inductive coupling due to winding. CONSTITUTION: DC linear power is supplied to a pulser network 90 from terminals 96, 98 and the termianls 98 is connected to an earth A. When a trigger signal is inputted to terminals 116, 118, an SCR 104 is driven to generate negative pulses. The negative pulses flowing to the primary winding 108 of a boosting transformer are amplified to be induced to secondary winding 128. A transducer circuit 92 is coupled with a transduer 130 by a coaxial cable 132 and the shield thereof is connected to an earth B. The transucer 130 is constituted so as to respond to feedback pulses during the stop period continued to the generation of pulses of the network 90 and responds to receiving pulses in a pulse echo mode to generate a response signal. By this constitution, the electric noise of a circuit is reduced and the contact with a container wall of a constitution claim becomes possible. |
