SIEMENS Sensation Cardiac 64 螺旋 CT滑环故障

admin

                    

                    

                    
                    
                    <p><p><img src="image/20200927/2f0004b2585dd38967d27b5f1dea288d_1.png" /></p></p><p><br  /></p><p><span><strong><span>故障现象:</span></strong></span></p><p><strong><span></span></strong></p><hr  /><p><strong><span></span></strong><br  /></p><p><span><span>执行</span>&nbsp;<span>“</span>CHECH UP<span>”预热和校正程序时曝光中途停止，校正无法通过</span>;&nbsp;<span>定位扫描正常，螺旋扫描时系统自动退出，并伴有扫描控制盒上的扫描启动灯短暂鸣叫声</span>;&nbsp;<span>错误提示信息为“</span>See Event&nbsp;<span>－</span>&nbsp;LOG<span>”。</span></span></p><p><span>&nbsp;</span></p><p><span><strong>故障分析和维修</strong>:</span></p><p><span></span></p><hr  /><p><span></span><br  /></p><p><span>从故障现象看，此故障的最大可能性来自滑环的通信异常。</span></p><p><span><br  /></span></p><p><span>Sensation Cardiac64&nbsp;<span>滑环系统由</span>&nbsp;15&nbsp;<span>组滑环组成，由外到内排列顺序</span>: 1<span>、</span>2&nbsp;<span>组为系统提供</span>&nbsp;UDC 560V&nbsp;<span>直流电压</span>;&nbsp;<span>第</span>3<span>组为接地</span>;&nbsp;<span>第</span>&nbsp;4<span>、</span>5&nbsp;<span>组为</span>&nbsp;DMS<span>、</span>DPU&nbsp;<span>提供</span>&nbsp;230V&nbsp;<span>交流电压</span>;&nbsp;<span>第</span>6<span>、</span>7&nbsp;<span>组在为高压系统提供所需的低压</span>(&nbsp;<span>如</span>:&nbsp;<span>球</span>&nbsp;<span>管</span>&nbsp;<span>灯</span>&nbsp;<span>丝</span>&nbsp;<span>变</span>&nbsp;<span>压</span>&nbsp;<span>器</span>)&nbsp;<span>的同时也为</span>DPU&nbsp;<span>提供</span>230V&nbsp;<span>交流电压</span>;&nbsp;<span>第</span>&nbsp;8&nbsp;<span>至</span>&nbsp;15&nbsp;<span>组滑环实现</span>&nbsp;MCU/RTC<span>与</span>&nbsp;ACU&nbsp;<span>之间的控制信号、系统信息传输。</span></span></p><p><span>&nbsp;</span></p><p><span><span>进入维修模式，显示错误信息为</span>:&nbsp;<span>“</span>CT_ RTC3031"&nbsp;<span>“</span>CT_ RTC 3052<span>”和</span>&nbsp;<span>“</span>CT_ RTC 3039<span>”。</span></span></p><p><span><br  /></span></p><p><span><span>此信息提示</span>:&nbsp;</span></p><p><span><br  /></span></p><p><span>( 1)&nbsp;<span>旋转系统启动</span>20s&nbsp;<span>时间内，脉冲接收器没有接收到转速脉冲信号；</span></span></p><p><span><br  /></span></p><p><span>( 2)&nbsp;<span>旋转系统用于评价角度脉冲的时间间隔和</span>&nbsp;GANTRY&nbsp;<span>的平衡性的定位</span>&nbsp;AP&nbsp;<span>脉冲数偏离</span>1200<span>。</span></span></p><p><span>&nbsp;</span></p><p><span><span>为此进行如下操作</span>:</span></p><p><span><br  /></span></p><p><span>( 1)&nbsp;<span>使用软件程序检查</span>&nbsp;AP&nbsp;<span>脉冲情况</span>:&nbsp;<span>选择</span>OPTION&nbsp;<span>＞</span>&nbsp;SERVICE&nbsp;<span>＞</span>&nbsp;<span>－</span>&nbsp;<span>－</span>&nbsp;<span>－</span>&nbsp;CONTROLLER&nbsp;<span>＞</span>ACD&nbsp;<span>，设置扫描时间</span>&nbsp;1s<span>，启动测试，系统检测失败。</span></span></p><p><span>&nbsp;</span></p><p><span>( 2)&nbsp;<span>检查扫描架内部</span>:&nbsp;<span>在静止模式下，手动转动</span>&nbsp;GANTRY&nbsp;<span>使球管到达五个不同位置</span>&nbsp;( 0<span>、</span>90<span>°、</span>180<span>°、</span>270<span>°和</span>300<span>°</span>)&nbsp;<span>，维修软件表格自动显示各位置对应脉冲均正常。</span></span></p><p><span>&nbsp;</span></p><p><span>( 3)&nbsp;<span>检查碳刷长度正常</span>:&nbsp;<span>发现滑环表面有污物，使用蘸取无水酒精的医用纱布清理滑环，故障消失，机器恢复正常。</span>SIEMENS Sensation Cardiac 64&nbsp;<span>螺旋</span>&nbsp;CT&nbsp;<span>采用封闭式水冷和内置风冷方式。当附着于滑环上的污物导致旋转</span>&nbsp;AP&nbsp;<span>脉冲的读出错误、控制数据错误，一旦系统检测</span>&nbsp;AP&nbsp;<span>脉冲偏离达到</span>&nbsp;1200&nbsp;<span>时，认为旋转频率驱动器有问题，设备启动安全性停机保护。这是一起因污物附着滑环表面致使滑环碳刷接触不良，最终使数据、控制信号传输异常的故障。</span></span></p><p><span><span><br  /></span></span></p><p><span><span><br  /></span></span></p><p><span><span>来源：医学工程在线</span></span></p><p><br  /></p><p><br  /></p><section label="powered by gulangu"><section label="Copyright ? 2015 Yead All Rights Reserved."><p><p><img src="image/20200927/e44fb82457d9faaf6786cfda23e64de9_2.gif" /></p><br  /></p><p><br  /></p><section label="Copyright ? 2015 Yead All Rights Reserved."><blockquote><p><br  /></p><p><span><strong><span>《医疗器械维修工程师第二聚集地》</span></strong></span></p><p><span>这里聚集了：</span></p><p><span>6000位工程师在线解答</span></p><p><span>解决您的</span></p><p><span>技术咨询</span></p><p><span>维修保养</span></p><p><br  /></p><p><span><strong>微信交流</strong><br  /></span></p><p><strong><span><br  /></span></strong></p><p><span>微信：Weixiu_Bang&nbsp;</span></p><p><span>QQ群: &nbsp;2313264895</span></p><p><br  /></p><p><span><strong>相关文章推荐</strong></span></p><p><br  /></p><p><span><strong>GE Vivid7型彩超故障及维修过程</strong></span><br  /></p><p><span><strong>Sysmex kx-21 故障四例</strong></span><br  /></p><p><span><strong>CR的结构和常见故障处理</strong></span></p></blockquote></section></section></section><p><br  /></p>