The System Of Wireless Transmission And Monitoring Control For Seismic Measure Data

With the great growth in compution technology, digital recording system has been gradually used in seismic signal acquisition instead of analog recording technology. In order to be suit for the specific tasks, a set of more flexible and portable Point-Multipoint and data of seismic measure acquisition and wireless transmission recording system, with higher acquiring resolution, higher stability of wireless-transmission is necessary. In this article, the technology scheme of seismic measure data wireless transmission and supervision control system, and the capability target and technology request of the software and hardware are described in detail. The correlative programs are developed under Visual C++6.0 enviroment, and the flowchart is also presented. The basic concepts of serial-port communication technology, Win32 API function and the process, thread and multi-thread in Win32 system are described. Application the function for read and write of system register, the transmission port's numbers of virtual multi-serials of USB's interface conversion driver are gained. Application the multi-thread technology, functions of Win32 API and the overlapped mode , developed the virtual multi-serial montoring modules, and realized it's data reception, and realized data waveform of multi-serialport and multi-channle received data, using the Picture control of Visual c++. The final,seismic data is saved in SAC form. For the practical situation and the specific aspects for seismic measure of DTD340V, Wireless Data Transmission Radio, the working mode of Point-Multipoint of groups is applied. The wireless communication protocol and correlative parameter control modules are developed, the remote control of digitizers, parameter setting of the seismic sensors and data transmission are also realized. This wireless seismical signal transmission and supervisory control system has passed the trial in lab,and is on the way to practical use.