| In-bore abnormal phenomenon test and measurement is not only a significant ordnance test technique, but also an important method for the investigation of bore premature. In this paper, the method of In-bore abnormal phenomenon remote detecting is presented. Considering of the multi-channel transient signals automatic acquisition, a project of PCM signal hardwire transmission data automatic acquire system is put forward. In this system, a PCM demodulate board is designed, it can decode the PCM code string which contain the information of the multi-channel transient signals, it also can catch the useful data automatically, and transmit these data to upper PC by RS485. A upper PC software is designed to receive the data and display them on the screen or save them safely. |
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