The speed monitoring chip based on Bernoulli principle can be used for natural gas pipeline leakage detection

Hello everyone , I meet you again , I'm your friend, Quan Jun .

The United States Microfluidic Foundry The speed monitoring chip developed by the company （MEMS Sensor chip ） Based on Bernoulli principle, the speed of moving objects is directly read , It is a powerful supplement to the existing accelerometers and gyroscope sensors , It will expand many new applications . The proposed sensor node will include at least two sensor chips , These sensor chips will be installed at specific intervals along the natural gas pipeline . The chips will read the gas flow and communicate with each other . Any difference between the recorded gas flows , Except for the differences in consumption and storage , Will represent possible leakage along the pipeline between sensor nodes .

This detection method is similar to the optical fiber hydrophone listening and sensing technology used by Hangzhou Maihuang Technology , The installation and operation of the sensing unit of the optical fiber hydrophone listening sensing system is simple , It can be installed without damaging the existing pipeline , The project is easy to realize , Suitable for old pipeline monitoring ; Optical fiber acoustic sensor has high detection sensitivity 、 Sound interception has a long range , Reduce the number of sensors used under the same requirements , Cost savings ; There is no need to punch holes in the pipe , Easy to install ; Adopt optical fiber sensing technology , Passive intrinsic safety of sensor end , Adapt to high temperature 、 corrosion 、 Explosive and other high-risk occasions ; Optical fiber and optical fiber sensor are stable and reliable , Long service life .

If the fiber-optic hydrophone listens to the sensing system and then cooperates with the distributed fiber-optic vibration monitoring system , Composite judgment , The false alarm rate is lower than 2%; It has real-time alarm function for natural gas pipeline leakage , It can detect and locate various acoustic signals in real time , The positioning error between the two sensors is ±10m within ; It can also monitor the excavation signal near the natural gas pipeline , It can be used to prevent the pipeline from being damaged by mechanical excavation 、 Early warning of punching, theft and other events .

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