| 摘要 |
An open circuit detector for connecting devices in seismic data acquisition systems comprises two transformers (TM, TS), at least one signal source and at least one detection device. The detector is characterized in that the transformers' primary windings (W1M, W1S) are connected to the detection device(s) and the signal source to form a primary circuit for detection of impedance changes, especially those caused by an open circuit condition in the secondary circuit, and the transformers' secondary windings (W2M, W2S) are connected to the connecting device to form a secondary circuit or loop. A method for detection of an open circuit in a connecting device in seismic data acquisition systems by means of a detector comprising two transformers (TM, TS), at least one signal source and at least one detection device is characterized by connecting the transformers' primary windings to the detection device(s) and the test signal source to form a primary circuit, connecting the transformers' secondary windings to the connecting device to form a secondary circuit or loop, detecting impedance changes in the secondary circuit, and determining an open circuit condition based on said detected impedance changes. |
