【设备运营与保障】Kodak DryView 8150激光相机工作原理及维修

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                    <p><span><span><p><img src="image/20201019/6f9c465498151f0141ba3f9c87599bf1_1.jpg" /></p><br  /></span></span></p><p><span><span>医用激光相机是现代信息技术高度发展的产物，作为 </span><span>CT、MR、CR、DR 等先进仪器的输出设备，已经基本取代</span><span> 了多幅相机、全自动洗片机等。干式激光相机可以分为干</span><span> </span><span>式卤化银激光成像、干式热敏成像、干式喷墨成像。干式</span><span> </span><span>激光相机通常带有</span><span> </span><span>DICOM3.0</span><span> </span><span>接口，可以通过</span><span> </span><span>PACS</span><span> </span><span>网络连</span><span> </span><span>接多台设备，实现多台资源共享，目前成为大多数医院影</span><span> </span><span>像科室的最佳选择</span><span> </span><span>[1-2]</span><span>。</span></span></p><p><span> </span></p><p><span><strong><span><span>1</span><span> </span><span>基本结构</span></span></strong></span></p><p><span> </span></p><p><span><span>激光相机一般由</span><span> </span><span>6</span><span> </span><span>大部分组成</span><span> </span><span>：开关电源、影像控制</span><span> </span><span>部分、抓片机构控制部分、激光打印部分、胶片传动部分、 胶片加热显影部分。激光相机基本结构示意图，见图</span><span> </span><span>1。</span></span></p><p><p><img src="image/20201019/7f41aa12d3b094cd7c226d0f0b4ea0ff_2.png" /></p><br  /></p><p><span><strong><span><span>2</span><span> </span><span>工作原理</span></span></strong></span></p><p><span><br  /></span></p><p><span><span>激光相机的工作原理是</span><span> </span><span>：激光产生装置产生激光，然</span><span> 后激光穿透一个转动的多菱镜再折射，折射后的激光束再</span><span> </span><span>经过聚焦透镜系统打印在胶片上</span><span> </span><span>[3-4]</span><span>。</span></span></p><p><span><br  /></span></p><p><span><span>一般情况下激光相机的工作流程为</span><span> </span><span>：影像主机发送至</span><span> 激光相机→影像处理系统进行处理→控制系统控制抓片机 构抓取胶片送入胶片传输系统→进入激光组件进行曝光→ </span><span>曝光后的胶片再由传送机构送入加热显影机构→输出胶片。 基本工作流程，见图</span><span> </span><span>2。</span></span></p><p><span><p><img src="image/20201019/9f58d964ceef58789a06bb3bc502dfe6_3.png" /></p></span></p><p><span><span>Kodak</span><span> </span><span>DryView</span><span> </span><span>8150</span><span> </span><span>是</span><span> </span><span>Kodak</span><span> </span><span>DryView</span><span> </span><span>8100</span><span> </span><span>的升级版</span><span>本，其优势是打印速度快、安装维护方便。在使用过程中， </span><span>柯达相机也会出现问题，在熟悉机器基本原理以及工作流</span><span> </span><span>程的情况下，也可以达到快速解决问题，现总结该机</span><span> </span><span>3</span><span> </span><span>例</span><span> </span><span>故障情况，供同行参考。</span></span></p><p><span> </span></p><p><span><strong><span><span>3</span><span> </span><span>故障案例</span></span></strong></span></p><p><span> </span></p><p><span><strong><span>3.1</span><span> </span><span>案例一</span></strong></span></p><p><span><span>（1）故障现象</span><span> </span><span>：开机自检，报</span><span> </span><span>Error</span><span> </span><span>10-910,</span><span> </span><span>系统无法</span><span> 完成自检。</span></span></p><p><span><span>（2） 故 障 分 析 ：查 询 故 障 手 册 得 知 10-910“No</span><span>Communication</span><span> </span><span>with</span><span> </span><span>the</span><span> </span><span>MCS”为通讯失败，通讯失败可以</span><span>有</span><span> </span><span>2</span><span> </span><span>种情况</span><span> </span><span>：①</span><span> </span><span>激光相机与</span><span> </span><span>PACS</span><span> </span><span>中图像主机的通讯问题</span><span> </span><span>；②</span><span> </span><span>激光相机中</span><span> </span><span>MCS</span><span> </span><span>与其他模块的通讯问题</span><span> </span><span>[5]</span><span>。</span></span></p><p><span><br  /></span></p><p><span><span>（3）故障排除</span><span> </span><span>：该故障是在开机自检情况下产生，因 </span><span>此不涉及第①种情况，此故障可能是机器</span><span> </span><span>MCS</span><span> </span><span>与其他模块</span><span> </span><span>通信产生问题，最直接的是相机内部通讯回路的通信线和</span><span> </span><span>通信板卡问题。经查通信线完好，打开机器取出机器内计</span><span> </span><span>算机，将</span><span> </span><span>PCMIC</span><span> </span><span>通讯卡金手指擦洗之后重新装上，故障依</span><span> </span><span>旧，因此需要测试板卡本身是否异常，将</span><span> </span><span>1</span><span> </span><span>块新硬盘克隆</span></span></p><p><span><span>之后，挂载到另</span><span> </span><span>1</span><span> </span><span>台电脑上，启动之后自动装完驱动程序， </span><span>系统自检进入开机界面，初步判断板卡应该正常，将此克</span><span> </span><span>隆硬盘重新挂载进</span><span> </span><span>8150</span><span> </span><span>主机，重启，机器正常。</span></span></p><p><span><br  /></span></p><p><span><strong><span><span>3.2</span><span> </span><span>案例二</span></span></strong></span></p><p><span><span>（1）故障现象</span><span> </span><span>：打印胶片，每张中间出现部分丢失性 </span><span>压缩。</span></span></p><p><span><br  /></span></p><p><span><span>（2）故障分析</span><span> </span><span>：此类故障没有故障代码，中间部分出 现丢失性压缩，估计是属于胶片经过</span><span> </span><span>pickup</span><span> </span><span>之后进入对中 装置时出现错误或者激光头驱动装置传送机构出现错误，</span><span> </span><span>如果是激光头故障则不可能整张片子全部中间部分丢失，</span><span> </span><span>因此判断该故障产生原因应该是机械性的，最有可能就是</span><span> </span><span>传片机构滚轴不平衡</span><span> </span><span>[6-7]</span><span>。</span></span></p><p><span><br  /></span></p><p><span><span>（3）故障排除</span><span> </span><span>：打开机器将废片从</span><span> </span><span>pickup</span><span> </span><span>处手动导入， </span><span>发现进入激光驱动装置部分有一根滚轴运动异常，拆下查</span><span> </span><span>看发现小轴承已碎裂，更换后，试机，机器出片正常。</span></span></p><p><span><br  /></span></p><p><span><strong><span><span>3.3</span><span> </span><span>案例三</span></span></strong></span></p><p><span><span>（1）故</span><span> </span><span>障现象</span><span> </span><span>：报</span><span> </span><span>Error</span><span> </span><span>21-118:</span><span> </span><span>Pickup</span><span> </span><span>Failed</span><span> </span><span>to</span><span> </span><span>go Home。属于机械故障，因此开前门检查</span><span> </span><span>pickup，但机器未</span><span> </span><span>正常打开前门，手动打开前门，发现片盒未合到位，手动</span><span> </span><span>合上，并取出片盒，仔细观察</span><span> </span><span>pickup，未见异常，放回片 </span><span>盒，重启，在</span><span> </span><span>pinckup</span><span> </span><span>检测时听到“咔擦”响声，立即关机，</span><span>手动打开前门，片盒位置如前，因此判断可能是</span><span> </span><span>pickup</span><span> </span><span>运</span><span>动时受外力导致故障</span><span> </span><span>[8]</span><span>。</span><br  /></span></p><p><span><br  /></span></p><p><span><span>（3）</span><span> </span><span>故障排除</span><span> </span><span>：卸</span><span> </span><span>下片盒托盘，</span><span> </span><span>发现过滤器过滤管</span><span> pickup</span><span> </span><span>上端固定箍断裂掉落进托盘导致机械手倾斜，因此 </span><span>当检测</span><span> </span><span>pickup</span><span> </span><span>时机械手抓取片盒封膜时卡住，去除掉落物，</span><span> </span><span>机器开机正常。</span></span></p><p><span><br  /></span></p><p><span><strong><span>4 </span><span> </span><span>小结</span></strong></span></p><p><span> </span></p><p><span><span>Kodak</span><span> </span><span>DryView</span><span> </span><span>8150</span><span> </span><span>激光相机属于精密仪器，使用过 </span><span>程中要注意使用环境，特别是温度和相对湿度，发生故障</span><span> </span><span>时要根据机器的基本结构以及工作基本流程结合所报故障 </span><span>信息逐步排除。</span></span></p><p><p><img src="image/20201019/df1c2eb09b3189e573942cb954365e1d_4.png" /></p><br  /></p>