桥梁的振动检测及数据记录分析
<P >大家好<FONT face="Times New Roman">!</FONT></P><P ><FONT face="Times New Roman"></FONT>为了测量桥梁的各种参数指标，特别是桥梁的振动测试，我向您介绍美国的一种产品：振动频谱分析记录仪<FONT face="Times New Roman">(</FONT>三轴<FONT face="Times New Roman">) SVR101,</FONT>它是一个独立的、能自动记录加速度数据用于振动及峰值频谱分析的精密仪器，应用于许多领域，著如风、车辆等对桥梁的共振影响、机械共振及故障检测、耐久性测试、材料研究、等等，该仪器体积小，仅<FONT face="Times New Roman"><st1:chmetcnv w:st="on" TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue="89" UnitName="mm">89mm</st1:chmetcnv>*<st1:chmetcnv w:st="on" TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue="112" UnitName="mm">112mm</st1:chmetcnv>*<st1:chmetcnv w:st="on" TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue="26" UnitName="mm">26mm</st1:chmetcnv></FONT>，使用电池，独立工作，配有螺栓安装孔，固定和使用方便。采集到的数据存储在非挥发性固态记忆体中，即使电池电量耗尽，也能最大限度地保障数据的安全，它不仅能记录和保存三轴上的振动及峰值数据，同时还能够根据设定的采样时间记录周围温度数据。该仪器能够通过<FONT face="Times New Roman">FFT</FONT>来测量和计算实时的频谱数据（<FONT face="Times New Roman">0~63.5HZ</FONT>），为了有效使用内存，该仪器还可以在用户设定的参数极限被触发后再开始记录数据，一旦将该仪器中的数据下载到计算机中，就可以通过我们功能强大的<FONT face="Times New Roman">MadgeTech</FONT>软件利用<FONT face="Times New Roman">3-D</FONT>图形来进行分析。</P>
<P ><FONT face="Times New Roman"></FONT>由于我们的振动频谱分析记录仪<FONT face="Times New Roman">(</FONT>三轴<FONT face="Times New Roman">) SVR101</FONT>具有上述的特点，我们可以设定这些记录仪在将来的某一时刻同时启动进行数据的采集，它们具有极高的同步性，以便于我们分析同一时刻桥梁上各点的振动情况。</P>
<P >因此，<FONT face="Times New Roman">SVR101</FONT>是独特的极具使用价值分析诊断工具。</P>
<P ><p><FONT face="Times New Roman"> </FONT></p></P>
<P ><FONT face="Times New Roman">------------------------------------------</FONT></P>
<P ><p><FONT face="Times New Roman"> </FONT></p></P>
<P >特点：<FONT face="Times New Roman">1</FONT>、记录振动频率，加速度峰值，温度，<FONT face="Times New Roman">FFT</FONT></P>
<P ><FONT face="Times New Roman"> 2</FONT>、用户可任意选择触发值</P>
<P ><FONT face="Times New Roman"> 3</FONT>、高速下载</P>
<P ><FONT face="Times New Roman"> 4</FONT>、可程序控制仪器的启动时间</P>
<P ><FONT face="Times New Roman"> 5</FONT>、内置加速度计</P>
<P ><p><FONT face="Times New Roman"> </FONT></p></P>
<P >具体参数指标：</P>
<P ><FONT face="Times New Roman">1</FONT>、<FONT face="Times New Roman">Acceleration Sensor</FONT>：<FONT face="Times New Roman">MEMS Semiconductor </FONT></P>
<P ><FONT face="Times New Roman">2</FONT>、<FONT face="Times New Roman">Acceleration Range</FONT>：±<st1:chmetcnv w:st="on" TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue="50" UnitName="g"><FONT face="Times New Roman">50g</FONT></st1:chmetcnv></P>
<P ><FONT face="Times New Roman">3</FONT>、<FONT face="Times New Roman">Acceleration Resolution</FONT>；<st1:chmetcnv w:st="on" TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue=".1" UnitName="g"><FONT face="Times New Roman">0.1g</FONT></st1:chmetcnv>（<FONT face="Times New Roman">12bit</FONT>）</P>
<P ><FONT face="Times New Roman">4</FONT>、<FONT face="Times New Roman">Calibrated Accuracy</FONT>：±<st1:chmetcnv w:st="on" TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue="1" UnitName="g"><FONT face="Times New Roman">1g</FONT></st1:chmetcnv></P>
<P ><FONT face="Times New Roman">5</FONT>、<FONT face="Times New Roman">Sampling Rate</FONT>：<FONT face="Times New Roman">256Hz (decimated to 128Hz)</FONT></P>
<P ><FONT face="Times New Roman">6</FONT>、<FONT face="Times New Roman">FFT Range: 0 to 63.5Hz in 0.5Hz bins (significant math errors occur at 0~1.5Hz)</FONT></P>
<P ><FONT face="Times New Roman">7</FONT>、<FONT face="Times New Roman">FFT Window period: 2 seconds</FONT></P>
<P ><FONT face="Times New Roman">8</FONT>、<FONT face="Times New Roman">FFT sampling period: 2 seconds to 7200 seconds (2 hours)</FONT></P>
<P ><FONT face="Times New Roman">9</FONT>、<FONT face="Times New Roman">Temperature channel: Range :</FONT><st1:chmetcnv w:st="on" TCSC="0" NumberType="1" Negative="True" HasSpace="False" SourceValue="20" UnitName="℃"><FONT face="Times New Roman">-20</FONT>℃</st1:chmetcnv><FONT face="Times New Roman">~</FONT>＋<st1:chmetcnv w:st="on" TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue="60" UnitName="℃"><FONT face="Times New Roman">60</FONT>℃</st1:chmetcnv>，<FONT face="Times New Roman">Resolution: </FONT><st1:chmetcnv w:st="on" TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue=".1" UnitName="℃"><FONT face="Times New Roman">0.1</FONT>℃</st1:chmetcnv><FONT face="Times New Roman">, Accuracy: </FONT>±<st1:chmetcnv w:st="on" TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue=".5" UnitName="℃"><FONT face="Times New Roman">0.5</FONT>℃</st1:chmetcnv></P>
<P ><FONT face="Times New Roman">10</FONT>、<FONT face="Times New Roman"> Memory: 16Mbit (3800 samples)</FONT></P>
<P ><FONT face="Times New Roman">11</FONT>、<FONT face="Times New Roman"> Sample Rate: 2 Seconds up to 2 hours</FONT></P>
<P ><FONT face="Times New Roman">12</FONT>、<FONT face="Times New Roman"> Baud Rate: 115200</FONT></P>
<P ><FONT face="Times New Roman">13</FONT>、<FONT face="Times New Roman"> Typical Battery life: 48 hours (9V lithium)</FONT></P>
<P ><FONT face="Times New Roman">14</FONT>、<FONT face="Times New Roman"> Operating Environment: </FONT><st1:chmetcnv w:st="on" TCSC="0" NumberType="1" Negative="True" HasSpace="False" SourceValue="20" UnitName="℃"><FONT face="Times New Roman">-20</FONT>℃</st1:chmetcnv><FONT face="Times New Roman">~</FONT>＋<st1:chmetcnv w:st="on" TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue="60" UnitName="℃"><FONT face="Times New Roman">60</FONT>℃</st1:chmetcnv><FONT face="Times New Roman">, 0 to 90% RH no-condensing</FONT></P>
<P ><FONT face="Times New Roman">15</FONT>、<FONT face="Times New Roman"> Materials: Anodized aluminum</FONT></P>
<P ><FONT face="Times New Roman">16</FONT>、<FONT face="Times New Roman"> Dimensions: <st1:chmetcnv w:st="on" TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue="89" UnitName="mm">89mm</st1:chmetcnv>*<st1:chmetcnv w:st="on" TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue="112" UnitName="mm">112mm</st1:chmetcnv>*<st1:chmetcnv w:st="on" TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue="26" UnitName="mm">26mm</st1:chmetcnv></FONT></P>
<P ><FONT face="Times New Roman">17</FONT>、<FONT face="Times New Roman"> CE Approval: pending</FONT></P>
<P ><p><FONT face="Times New Roman"> </FONT></p></P>
<P ><FONT face="Times New Roman">---------------------------------</FONT></P>
<P >联系方式：</P>
<P >南京迈捷克科技有限公司</P>
<P >地址：南京市珠江路西大影壁<FONT face="Times New Roman">6-303</FONT>室</P>
<P >邮编：<FONT face="Times New Roman">210018</FONT></P>
<P >电话：<FONT face="Times New Roman">025-81618495</FONT>、<FONT face="Times New Roman">83684080</FONT></P>
<P >传真：<FONT face="Times New Roman">025-83684080</FONT></P>
<P ><FONT face="Times New Roman">Email: njmadgetech@163.com</FONT></P>
<P ><FONT face="Times New Roman">http://www.madgetech.com</FONT></P>
<P ><FONT face="Times New Roman">http://www.madgetech.com/chinese</FONT></P>
<P ><p><FONT face="Times New Roman"> </FONT></p></P>
<P >王戈文</P>
<P ><p><FONT face="Times New Roman"> </FONT></p></P>
<P ><p><FONT face="Times New Roman"> </FONT></p></P>
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