| Wireless acquisition of seismic exploration data is an important research direction in the field of seismic exploration.In this paper,a wireless data acquisition system for seismic exploration based on hybrid wireless networks is developed.STM32 processor is adopted as the entire system control core to coordinate the various modules to complete the collection and transmission of data.A seismic data acquisition card with ADS 1282 module as the core is set up,which linked the PS-10XS dynamic coil detector to complete the seismic data acquisition and analog-to-digital conversion.The sampling accuracy of ADS 1282 with 250 SPS to 4000 SPS adjustable sampling rate is up to 32 Bit.To solve the problem of time synchronization of acquisition nodes,a solution based on centralized GPS timing is adopted.Since the GPS module issues a timing signal every second,the time synchronization of the entire system is ensured.After the acquisition node receives the timing signal,it starts the counter and updates the local time of the node through the count value.In the design of the wireless transmission network of the seismic exploration acquisition system,the various wireless communication schemes and the specific needs of power consumption and network transmission rate of the seismic acquisition wireless acquisition system are analyzed.The ZigBee network with low power consumption and low rate is used as the control network,and the Wi-Fi network with high power consumption and high transmission rate is used as the transmission network with large data volume,and a hybrid network wireless transmission mode is finally formed.To satisfy the work requirements in the field,a power management module with battery charge and discharge management functions is designed.The software for the upper computer of the matching seismic acquisition wireless acquisition system was developed to achieve system control and data aggregation. |
PDF Full Text Request