| 摘要 |
<p>A signal generated by a remote, first computer 70' is converted into a magnetic field, which is then transmitted to a MWD system where it is detected and converted back into a signal which is then fed to a computer 72' in the MWD system. A magnetometer 74' which is typically present in commercial MWD systems may be used as the detector in the MWD system. An output of the first computer 70' may drive a power amplifier which in turn drives the field coils in a transmitter (80). The axis of the field coils is aligned with one of the axes of the magnetometer 74'. The invention overcomes the need in the prior art for a direct RS232 link up between a surface computer and the computer on an MWD tool. …<IMAGE>… </p> |
