周洋^1,2, 熊晓东¹, 裴彦良^2,3, 阚光明^2,3, 连艳红⁴, 吴爱平¹
1.长江大学 电子信息学院, 湖北 荆州 434020;2.青岛海洋科学与技术国家实验室海洋地质过程与环境功能实验室, 山东 青岛 266061;3.自然资源部第一海洋研究所 海洋沉积与环境地质国家海洋局重点实验室, 山东 青岛 266061;4.西安虹陆洋机电设备有限公司, 陕西 西安 710000

摘要:
针对海洋地震信号幅度小、动态范围大、噪声干扰强等特点，设计了基于高精度32位Δ-Σ（Sigma-Delta）模数转换器（ADC）的海洋多道地震拖缆四通道采集包。该地震信号采集包以STM32L432为核心，使用SPI总线控制4片32位模数转换器完成地震信号采集，采用九轴姿态传感器实时监测拖缆姿态，通过RS485接口将地震数据和姿态数据上传到数传包。测试表明：该装置自噪声小、动态范围大、功耗小、运行可靠，对海洋地震勘探高精度信号采集研究具有借鉴意义。
关键词:海洋多道地震勘探地震拖缆数据采集32位Δ-Σ模数转换器
DOI：10.11759/hykx20171101002
分类号:TP247
基金项目:国家重点研发计划（2016YFC0303901）；国家自然科学基金项目（41527809）；国家自然科学基金（国家基金委-山东省联合基金项目，U1606401）；青岛海洋科学与技术国家实验室鳌山科技创新计划项目（2015ASKJ01）；泰山****工程专项经费资助（TSPD20161007）

Design of a data acquisition package for a marine multi-channel seismic streamer
ZHOU Yang^1,2, XIONG Xiao-dong¹, PEI Yan-liang^2,3, KAN Guang-ming^2,3, LIAN Yan-hong⁴, WU Ai-ping¹
1.Electronic Information School, Yangtze University, Jingzhou 434020, China;2.Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266061, China;3.Key Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, MNR, Qingdao 266061, China;4.Xi'an Hongluyang Electromechanical Equipment Co. LTD, Xi'an 710000, China
Abstract:
In view of the small amplitude, large dynamic range, and strong noise interference of marine seismic signals, a four-channel acquisition package of multi-channel seismic streamer based on a high-precision 32-bit Δ-Σ analog-to-digital converter was designed. The seismic signal acquisition package, with STM32L432 as the core, uses the SPI bus to control four 32-bit analog-to-digital converters for seismic signal acquisition. In addition, a 9-axis attitude sensor was used to monitor the streamer posture in real time, and the seismic data and attitude data were uploaded to digital packets via an RS485 bus. Tests showed that the device has the merits of small noise, large dynamic range, low power consumption, and reliable operation. It has great significance for the study of high-precision signal acquisition in marine seismic exploration.
Key words:marine multi-channel seismic explorationseismic streamerdata acquisition32-bit Δ-Σ ADC





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