Realization of High-Speed Data Transmission in Seismic Data Acquisition

2011 ◽  
Vol 219-220 ◽  
pp. 560-564 ◽  
Author(s):  
Rui Yang ◽  
Ming Deng ◽  
Qi Sheng Zhang ◽  
Qi Wang
Keyword(s):  
Data Acquisition ◽  
Data Transmission ◽  
Seismic Data ◽  
High Speed ◽  
Low Voltage ◽  
Control Unit ◽  
Hardware Description ◽  
High Speed Data ◽  
Seismic Data Acquisition ◽  
Independent Design

Data transmission is one of key techniques of acquisition station for seismic data acquisition system. With the development of electronics, computer science and communication science, a good realization method has become available for seismic data transmission. The paper focused on the independent design & development of Manchester encoding module, Manchester decoding module and parallel/serial and serial/parallel conversion module by hardware description language (HDL) with FPGA as main control unit and Manchester code and low-voltage differential signaling as theoretical basis. It can realize data transmission speed of 16Mbps between seismic data acquisition stations. Testing results showed low error rate during data transmission to ensure that seismic data acquisition station can read commands sent by power station and convey seismic data correctly.

Design of Data Transfer System Based on PCI Express Interface Applied in High-Speed Railway

2012 ◽  
Vol 229-231 ◽  
pp. 1543-1546
Author(s):  
Xiao Bo Zhou ◽  
Min Xia ◽  
Hai Long Cheng
Keyword(s):  
Data Acquisition ◽  
Data Transmission ◽  
High Speed ◽  
Data Transfer ◽  
Transmission Method ◽  
High Speed Railway ◽  
Pci Express ◽  
Data Acquisition Card ◽  
High Speed Data Acquisition ◽  
High Speed Data

To improve data transmission performance of the data acquisition card, a design of high-speed data transmission system is proposed in the thesis. Using FPGA of programmable logic devices, adopting Verilog HDL of hardware description language, the design of modularization and DMA transmission method is implemented in FPGA. Eventually the design implements the data transmission with high-speed through PCI Express interface. Through simulation and verification based on hardware system, this design is proved to be feasible and can satisfy the performance requirements of data transmission in the high-speed data acquisition card applied in high-speed railway communication. The design also has some value of application and reference for a universal data acquisition card.

scholarly journals Development of a new seismic-data acquisition station based on system-on-a-programmable-chip technology

2013 ◽  
Vol 56 (3) ◽  
Author(s):  
Zhang Qi-sheng ◽  
Deng Ming ◽  
Guo Jian ◽  
Luo Wei-bing ◽  
Wang Qi ◽  
...  
Keyword(s):  
Power Consumption ◽  
Data Acquisition ◽  
Digital Filter ◽  
Data Transmission ◽  
Seismic Data ◽  
Low Noise ◽  
High Definition ◽  
Control Data ◽  
Seismic Data Acquisition ◽  
Transmission Speed

<p>There has been considerable development of seismic detectors over the last 80 years. However, there is still a need to further develop new earthquake exploration and data acquisition systems with high precision. In particular, for China to keep up with the latest technology of these systems, it is important to be involved in the research and development, instead of importing systems that soon fall behind the latest technology. In this study, the features of system-on-a-programmable-chip (SoPC) technology are analyzed and used to design a new digital seismic-data acquisition station. The hardware circuit of the station was developed, and the analog board and the main control data-transmission board were designed according to the needs of digital seismic-data acquisition stations. High-definition analog-to-digital converter sequential digital filter technology of the station (cascade integrator comb filter, finite impulse response digital filter) were incorporated to provide advantages to the acquisition station, such as high definition, large dynamic scope, and low noise. A specific data-transmission protocol was designed for the station, which ensured a transmission speed of 16 Mbps along a 55-m wire with low power consumption. Synchronic acquisition was researched and developed, so as to achieve accuracy better than 200 ns. The key technologies were integrated into the SoPC of the main control data-transmission board, so as to ensure high-resolution acquisition of the station, while improving the accuracy of the synchronic acquisition and data-transmission speed, lowering the power consumption, and preparing for the follow-up efforts to tape out.</p>

High-Precision Synchronous Implementation during Seismic Data Acquisition

2010 ◽  
Vol 171-172 ◽  
pp. 764-768 ◽  
Author(s):  
Qi Wang ◽  
Ming Deng ◽  
Qi Sheng Zhang ◽  
Rui Yang
Keyword(s):  
Data Acquisition ◽  
Data Transmission ◽  
Seismic Data ◽  
Delay Time ◽  
Positive Direction ◽  
Power Stations ◽  
Time Control ◽  
Seismic Data Acquisition ◽  
Hardware Circuit ◽  
Delayed Time

Seismic Synchronous acquisition means the Field Digitizer Unit acquiring data of each geophone at the same time. Here we will present a method to realize synchronous data acquisition of which the synchronous process is finished at FDU. A timer will be used to precisely measure the time difference between data transmission in positive direction and that in negative direction. And then work out the delayed time needed by each FDU. In that way, when receiving the command to acquire data synchronously again, the delay time control AD transformation can be well dealt with, so as to realize the purpose of synchronous resetting and acquisition. Through hardware circuit test, the two power stations have 15 FDU and each station is 25m or 50m apart, Accuracy of synchronization at each acquisition station reach 200ns. Besides, this method can be used for reference for technology of synchronization of other serial acquisition systems.

Design of Dual-Channel High-Speed Data Acquisition Card Based on USB 3.0 and FPGA

2012 ◽  
Vol 472-475 ◽  
pp. 2315-2319
Author(s):  
Peng Wang ◽  
Chen Wu
Keyword(s):  
Data Acquisition ◽  
Data Transmission ◽  
High Speed ◽  
Sampling Rate ◽  
Sampled Data ◽  
Dual Channel ◽  
Data Acquisition Card ◽  
High Speed Data Acquisition ◽  
High Speed Data ◽  
Asynchronous Parallel

A high-speed data acquisition card using USB 3.0 interface has been designed in order to solve the problem that traditional data acquisition card could not take both data transmission bandwidth and easy connection with PC into account. The data acquisition card controlled the dual-channel 12-bit 20Msps ADC for asynchronous parallel sampling using FPGA as core control module, which made the sampling rate up to 40Msps. The sampled data which was processed by FPGA transferred synchronous from FIFO interface to PC via USB controller. The basic structure of hardware and the basic design method for software and firmware were given in this paper, in which how to use FPGA to realize FIFO was elaborated in detail. The timing simulation of using asynchronous parallel A/D conversion technology and using ADC device of 40Msps sampling rate for FIFO internal data transmission were simulated respectively, thus verified the reliability of asynchronous parallel A/D conversion.

Ultrasonic Data Transmission via Wireless USB Technology

2010 ◽  
Vol 439-440 ◽  
pp. 41-45
Author(s):  
Xiao Chen
Keyword(s):  
Data Acquisition ◽  
Data Transmission ◽  
Interface Design ◽  
High Speed ◽  
High Performance ◽  
Control Unit ◽  
Signal Acquisition ◽  
Transmission Method ◽  
Usb Interface ◽  
Wireless Usb

For high-speed data acquisition and real-time transmission and processing requirements of ultrasonic measurement system, a wireless USB-based ultrasonic data transmission method was presented, combining wireless communication technology with the advantages of USB interface technology. The system consists of ultrasonic signal acquisition module, data transmission module, data acquisition module and the computer. The system uses Cypress Semiconductor's PSoC CYRF69213 chip for wireless data transmission and the chip microcomputer inside as the main control unit. This chip recorded data to the computer and displayed through USB interface. The system is a single-chip USB interface design with very few external components. The system has an USB interface advantages such supporting hot-swappable, plug and play features and the realization of wireless transmission of data without the need for layout of communications cables. The transmission system has good stability, small size, low power, high-performance features, which has a good application prospects.

scholarly journals Wireless Geophone Networks for Land Seismic Data Acquisition: A Survey, Tutorial and Performance Evaluation

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 5171
Author(s):  
Aliyu Makama ◽  
Koojana Kuladinithi ◽  
Andreas Timm-Giel
Keyword(s):  
Performance Evaluation ◽  
Data Acquisition ◽  
Seismic Data ◽  
Large Scale ◽  
Oil And Gas ◽  
Control Unit ◽  
Optimal Number ◽  
Small Scale ◽  
Oil And Gas Exploration ◽  
Seismic Data Acquisition

Seismic data acquisition in oil and gas exploration employs a large-scale network of geophone sensors deployed in thousands across a survey field. A central control unit acquires and processes measured data from geophones to come up with an image of the earth’s subterranean structure to locate oil and gas traps. Conventional seismic acquisition systems rely on cables to connect each sensor. Although cable-based systems are reliable, the sheer amount of cable required is tremendous, causing complications in survey logistics as well as survey downtime. The need for a cable-free seismic data acquisition system has attracted much attention from contractors, exploration companies, and researchers to lay out the enabling wireless technology and architecture in seismic explorations. This paper gives a general overview of land seismic data acquisition and also presents a current and retrospective review of the state-of-the-art wireless seismic data acquisition systems. Furthermore, a simulation-based performance evaluation of real-time, small-scale wireless geophone subnetwork is carried out using the IEEE 802.11 g technology based on the concept of seismic data acquisition during the geophone listen or recording period. In addition, we investigate an optimal number of seismic samples that could be sent by each geophone during this period.

Analysis of Inter-Satellite Optical Wireless Communication System

2017 ◽  
Vol 7 (10) ◽  
pp. 10
Author(s):  
Rajbir Singh
Keyword(s):  
Wireless Communication ◽  
Optical Networks ◽  
Data Transmission ◽  
High Speed ◽  
Open Space ◽  
Communication Link ◽  
Optical Wireless Communication ◽  
Optical Wireless ◽  
High Speed Data ◽  
Speed Data Transmission

Optical networks are bandwidth efficient networks are used for long haul communication providing seamless data transfer. For high speed data transmission in open space between different satellites, Inter-satellite Optical wireless communication (IsOWC) is widely used .In this paper we have evaluated the performance of IsOWC communication link for high speed data transmission .The performance of the system is evaluated on the basis of qualitative parameters such as Q-factor and BER using optisystem simulator.

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