GE Lightspeed 64排螺旋CT维修思路及体会

admin · 发表于 2020-10-21 12:36:04

GE LightSpeed系列CT是美国通用电气生产的主流型多排螺旋CT,除了临床应用功能强大外，还内置了很多测试程序，我们在维修过程中总结了一些经验，希望对大家维修保养CT有所帮助。<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />一：控制台集成程度更高，采用了专业服务器主机进行系统管理，重建及重建管理均采用内置CPU的高性能主板。控制台一般包括HP主机 IG(重建主机) DARC(重建管理及接口)<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />SDDA（数据硬盘阵列）以及电源盒路由器功能接口板等部件。<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />二：高压系统包括高压逆变控制、旋转阳极控制、灯丝控制电路、高压油箱、球管等<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />三：数据采集系统包括高效稀土陶瓷探测器、数据采集板（CONVERT BD）、采集控制板（DCP/DCB）、DAS电源等。<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />四：扫描数据传输采用射频及光纤传输。光纤具有通信容量大、速度快，传输距离长及抗电磁干扰等优点。<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />在维修过程中应熟练掌握CT的结构及板件的功能，根据故障代码，将测试程序和物理测量相结合，可以很快地判断出故障原因。<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />以下是一些故障案例。<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />A：故障现象：CT在扫描时意外终止，系统报错代码error code:：30-0302H Tube spits error <br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />故障分析：信息提示为系统检测到球管内部高压短路打火，一般球管打火分为管芯内打火和管套内打火，管芯内打火，必须更换球管，管套内打火，可以进行超声波清洁、抽真空注油、更换密封器件等措施解决。<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />B：故障现象：CT开机正常，但不能扫描，系统报错代码error code：60-0313H Inverter Max<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />ILR current detected。<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />故障分析：信息提示为逆变输出串联谐振电路中有过流现象发生。引起过流的原因可以根据CT高压控制原理来进行分析。当控制台发送出曝光千伏指令后，经过机架传输给KV控制板，经过逆变组件进行变频、高压油箱进行升压后通过高压电缆加载到球管上。<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />所以引起该故障的相关部件有逆变组件、高压油箱、高压电缆及球管。我们可以通过隔离测试来逐项区分。<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />1：在高压测试程序中运行GATE COMMAND TEST（逆变驱动测试）和INVERTER SHORT TEST(逆变器短路测试)，通过此测试可以判断逆变驱动及逆变器是否正常。<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />2：将高压电缆从球管处拔出。运行NO LOAD KV测试，可以判断球管内部是否有短路过流现象。做此测试时，注意须将拔出的高压电缆浸泡在高压绝缘油里。<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />3：将高压电缆从高压油箱处拔出，运行NO LOAD KV测试，可以判断高压电缆及高压油箱是否有短路击穿现象。<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />C：故障现象：CT在扫描过程中突然死机，再开机时无法进入正常操作界面。<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />故障分析：根据系统运行控制是由控制台完成的，那么我们就主要考虑和控制台相关的各个方面。引起死机的相关因素有那些呢，根据各个部件的功能我们可以找出以下几个因素：<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />1：控制台系统软件崩溃 <br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />2：系统硬盘损坏<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />3：其他与主机进行通讯的板件有故障导致主机与故障板件通讯死循环。经常可见的是原始数据硬盘损坏、重建系统故障以及接口电路、连接电缆等，因为这些部件与控制台主机有着非常频繁的数据通讯和交换。<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />4：其他可能与主机板通讯的部件（较少）<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />那么下一步就是分别进行相关的活动逐项排除。比如安装软件或者格式化硬盘来确定第一或者第二故障原因。可以通过格式化原始数据硬盘或者检测重建板来判断第三故障原因。<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />如何成为一个优秀的CT维修工程师。<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />成为一个优秀的CT维修工程师应该具备以下几个技能<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />1：能够掌握常用的医疗器械专业英语。现在的高精医疗设备大部分都是进口设备。主要操作界面、维修测试程序、故障信息提示等都是英文描述。其实科技英语语法比较单一，主要是单词量，以我们的经验看，能掌握2000左右的常用医疗器械术语和单词就可以基本阅读。<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />2：具有一定的电子线路知识和计算机软硬件知识。医疗器械中采用了大量典型的电路，掌握这些电路分析知识、元器件检测方法对维修工作具有很大的意义。现代CT的控制台都采用了专业计算机技术和WINDOWS\UNIX\LINUX软件操作系统，软件丢失、系统崩溃、硬盘损坏都是比较常见的故障。<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />3：对设备结构具有清晰的认识，对设备进行正常的拆装及调试校准。<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />4：建立系统化、功能化的维修思路，了解过程控制中的各个关键因素，遵循由简入难，由动入静的原则逐项排查。（由简入难，便于规理维修思路，由动入静是因为运动变化的部件更容易出现故障）<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />5：了解如何查询故障代码及故障代码的含义<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />6：根据故障现象及故障代码进行相关测试（软件测试硬件测试）<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />7：维修工作经验与技术并重，善于沟通及交流。现在医疗器械技术发展非常迅速，技术保守没有任何意义，只有以诚待人、充分交流才能促进维修技能的提高<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" />8：勤做笔记，维修工作中注重经验总结。<br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><br style="max-width: 100%; word-wrap: break-word; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; background-color: rgb(255, 255, 255);" /><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-size: 14px; line-height: 22.4px; white-space: normal; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);">总之，CT技术发展至今已经非常成熟，其功能化网络化系统化较为全面，各个部件单元都有独立的功能和控制，这为快速区分故障奠定了基础。<hr style="line-height: 25.6px; white-space: normal;" /> <section class="pEditor " style="line-height: 25.6px; white-space: normal;"><section data-css="background-color: rgb(239, 239, 239);border-radius: 5px;border: 1px solid rgb(153, 153, 152);margin: 0px;padding: 5px" style="padding: 5px; border-radius: 5px; border: 1px solid rgb(131, 147, 209); text-align: center; background-color: rgb(239, 239, 239);"><section data-css="color: inherit;display: inline-block;margin: 1px" style="margin: 1px; color: inherit; display: inline-block;">推荐阅读</section><section data-css="color: inherit;margin: 0px;padding: 10px" style="padding: 10px; color: inherit;"><ol class=" list-paddingleft-2" style="list-style-type: lower-alpha;"><li>广东上药桑尼克医疗科技有限公司 </li><li>上海卓亚医疗器械维修有限公司 </li><li>CT 、MR 、DSA 、PET 维修商一览表（部分） </li><li>如果你有一个做医疗设备维修的朋友 </li><li>合肥迅即影像科技有限公司 </li><li>有一对做医疗器械的父母是一种什么样的感受？</li></ol></section></section></section><section class="pEditor " style="line-height: 25.6px; white-space: normal;"><section style="border: 0px; max-width: 100%; font-size: 16.3636px; text-align: center; word-wrap: break-word !important; box-sizing: border-box !important;"><section style="max-width: 100%; display: inline-block; word-wrap: break-word !important; box-sizing: border-box !important;"><section style="max-width: 100%; display: inline-block; word-wrap: break-word !important; box-sizing: border-box !important;"> ·END· </section><section class="gulangutitle" style="margin: 0em 0.5em 0.1em; max-width: 100%; color: rgb(16, 146, 113); font-size: 1.8em; line-height: 1; font-weight: inherit; word-wrap: break-word !important; box-sizing: border-box !important;"><strong class="pBrush" style="padding-right: 50px; padding-bottom: 3px; padding-left: 50px; border-bottom-style: solid; border-bottom-width: 1px; border-color: rgb(2, 2, 2); display: block; line-height: 28px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"></section><section class="pbrush" style="margin: 0.5em 1em; max-width: 100%; font-size: 1em; 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