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基于伯努利原理的速度监测芯片可用于天然气管道泄露检测
2022-07-05 13:55:00 【全栈程序员站长】
大家好,又见面了,我是你们的朋友全栈君。
美国Microfluidic Foundry公司开发的速度监测芯片(MEMS传感芯片)基于伯努利原理而直接读取运动物体速度,既是对现有加速度计和陀螺仪传感器的有力补充,又将开拓扩展许多新的应用。 所提出的传感器节点将包括至少两个传感器芯片,这些传感器芯片将沿着天然气管道以特定间隔安装。 芯片将读取气体流量并相互通信。 所记录的气体流量之间的任何差异,除了那些消耗和存储的差异,都将表示沿传感器节点之间的管道的可能泄漏。
这种检测方式跟杭州迈煌科技用光纤水听器侦听传感技术类似,光纤水听器侦听传感系统传感单元的安装操作简单,可在不破坏现有管道下安装,工程易实现,适合老旧管道监测;光纤声波传感器探测灵敏度高、声侦听作用距离远,同等要求下减少传感器的使用数量,节省成本;无需在管道上打孔,安装方便;采用光纤传感技术,传感端无源本安,适应高温、腐蚀、易爆等各种高危场合;光纤及光纤传感器稳定可靠,使用寿命长。
光纤水听器侦听传感系统再配合分布式光纤振动监测系统的话,复合判断,误报率低于2%;具备天然气管道泄露实时报警功能,能够对各种声信号进行实时检测和准确定位,两个传感器之间的定位误差在±10m以内;还能对天然气管道附近开挖信号进行监测,可用于管道防机械开挖破坏、打孔偷盗等事件预警。
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