scholarly journals Chained Data Acquisition and Transmission System Protype for Cabled Seafloor Earthquake Observatory

2021 ◽  
Vol 9 (8) ◽  
pp. 880
Author(s):  
Jingyang Qiao ◽  
Wu Liu ◽  
Jingquan Liu ◽  
Jianping Zhou

Seafloor observatories can provide long-term, real-time submarine monitoring data, which has great significance for the study of major scientific technology in marine science, especially in the seafloor earthquake observation. The chained submarine data sampling and transmission system is the prototype and foundation of cabled seafloor earthquake observatories. This paper designs and builds a chained data sampling and transmission system (SQSTS) based on Zynq-7000 Soc (System on chip) and clock synchronization. At the beginning, we realized high-precision submarine data (24 bit) sampling based on Zynq-7000 Soc and ADS 1256. Using the PPS (Pulse per second) signal provided by the P88 1588 PTP (Precise time protocol) clock synchronization board and the inner crystal oscillator of the Zynq-7000 Soc, the time stamp up to the microsecond level, for the seismic data sampled in each seismometer node can support subsequent inversion of seismic data. In addition, a high-speed data transmission link connecting nodes in SQSTS, which is based on the Gigabit transceiver and optical cable, has been investigated. The transmission link has been realized by using the Aurora IP core. The theoretical calculations indicate that the data transmission bus bandwidth can reach 4 Gbps, while in the meantime its reliability has been proved by experiments. The experimental results show that the system owns the characteristics of high data sampling accuracy, stable and reliable high-speed transmission, and has promising application prospects.

2012 ◽  
Vol 155-156 ◽  
pp. 77-81
Author(s):  
Jing Zhang ◽  
Wei Dong

System uses micro-controller MSP430 as MCU of a whole system, using an embedded MODEM as a MODEM of data of system, MODEM connection with the microcontroller through the serial port, using another chip of microcontroller to implement a serial communication with PC interface in order to achieve the overall system configuration. The innovations of author: system uses the data achieved by MSP430F149 to transmission system,it has some versatility, it is through an embedded MODEM module connection with the UART of microcontroller for data transmission.


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