Distributed DAQlink III
作者:管理员 来源: 日期:2014-6-24 15:16:36 人气:
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Distributed High Resolution Seismic Recording System |
分布式DAQ3-24是标准DAQ3-24与高速网络子系统的结合体,在单元间传输触发信号和数据。整个系统与计算机相连,控制地震仪和记录采集到的数据
分布式系统可以使用简单的双绞线连接。另外根据需求,分布式的DAQ3-24系统可以设置成标准的地震记录仪
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MegaDAQ: Multiple DAQ3-24s
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A MegaDAQ consists of multiple DAQ3-24s connected via a network. This can be either a wired or wireless network. The network both controls the seismographs and collects the seismic data in real time.
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Field Benefits:
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最先进的技术保证资料的优异质量
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超高速24位AD转换器(48,000/秒采样率)
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高分辨率时钟
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低噪音低失真获取更佳的资料
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设计兼顾了生产且保护资料
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资料总是保存在盒子里-不会丢失资料
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下载资料不影响记录–不会影响生产
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更佳的资料管理带来更高效的生产 |
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灵活的操作
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不间断记录
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可由时间触发,输入触发或是触发信号触发
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不同的项目可有不同的工作方式
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多种不同的工作方式
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可用独立地震仪方式-最适合小地震队伍 |
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也可多个单元联合生产-增加了队伍的适应性 |
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坚固的铝质结构
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坚固,轻,O圈密封达到 IP67级别 |
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套扣的安装孔便于安装 |
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可用于永久性安装,长时间的不变化部署 |
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井下记录仪
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24 道每单元正适用于8个三分量检波器探头 |
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使用WiFi网络从多井采集 |
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大地观测站
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低功耗可以长时间工作 |
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可使用手机调制器通过网络收集资料 |
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多重不同的市场
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建筑物探 |
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油气勘探 |
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微地震裂痕观测 |
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异动发现与观测 |
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Network Details:
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网络连接选项
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Geophone String Wire – 2.5 Mbps US / 14.92 Mbps DS @ 2 Km
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Network Cabling – 8.34 Mbps US / 6.07 Mbps DS @ 2 Km
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Wi-Fi – 54 Mbps @ 1 Km (w/ clear line of sight)
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时断-触发选项
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连线触发-通过连线触发最近的DAQlink, 通过电缆传输触发信号
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电台触发-通过电台触发,通过电缆传输触发信号
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触发存储-DAQlink连续记录模式下,在炮点存储触发时间,炮后处理
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Distributed DAQlink III Specification:
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A/D
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24 bit sigma delta converter
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Anti-Alias Filters
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85% of Nyquist frequency
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Low Cut Filter
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User Selectable – DC, 0.1 Hz, 2 Hz
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Filter Type
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User Selectable – Linear, Minimum Phase
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Sample Rates
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1/16, 1/8, 1/4, 1/2, 1, 2, 4, 8, 16 ms
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PreAmp Gain
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x2 (6 dB) & x32 (30 dB) standard
x1 (0 dB) & x16 (24 dB) optional
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Max Input at x2 (Standard)
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3.58 Volts P-P x2 (Standard)
7.16 Volts P-P x1 (Optional)
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Bandwidth
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DC to 15 kHz
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Power
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Less than 0.8 watts per channel
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Input Impedance
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100k Ohms
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Clock Sync
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GPS
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Number of Channels
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24
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Temperature
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-40°C to +85°C
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Humidity
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0 to 100%
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Size
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13.0" x 9.0" x 4.8" (330 x 230 x 120 mm)
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Weight
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15 lbs (6.8 kg)
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Data Storage (Internal 16GB CF)
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120 hours (24 channels @ 2ms)
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Data Storage (through Ethernet)
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Unlimited
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Data Format
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32-bit float IEEE SEG-Y/SEG-D
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LEDs
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Network Connect, Network Data Status and Battery
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Trigger Accuracy
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± 1 µs at all sample rates
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Dynamic Range
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Better than 118 dB (at 2 ms)
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THD
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0.0012 %
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Crosstalk
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Better than -125 dB
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Common Mode Rejection
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Better than 100 dB
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Noise Floor
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< 0.2 µV RMS @ 2ms
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RJ-45
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Standard CAT-5 Ethernet
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GPS
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4-pin Weatherproof
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Trigger
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3-pin Weatherproof
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Power
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2-pin Weatherproof
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Auxiliary Port
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19-pin Weatherproof
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Seismic Data
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55-pin Weatherproof
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Up Network Port
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10-pin male Weatherproof
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Down Network Port
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10-pin female Weatherproof
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