KEYWORDS: Sensors, Signal processing, Safety equipment, Photoluminescence, Humidity, Design and modelling, Analog to digital converters, Thin films, Speckle interferometry, Scientific research
Monitoring the microstrain on the surface of equipment is of great significance for its health monitoring and daily maintenance. A microstrain detection method is researched in this article based on the photoluminescence characteristics of SWCNT materials. The detection of microstrain can be achieved by using the SWCNT strain sensing film pasted on the surface of the tested equipment. A standard strain gauge can also be pasted on the back of the corresponding position where the SWCNT strain sensing film is pasted to check the detection accuracy of the SWCNT strain sensing film. A microstrain loading device is designed in this paper. Then, a simulation study on the stress distribution of components with different shapes and sizes is conducted. Simulation results indicate that the geometric shape of the tested component has a significant impact on the stress distribution.
KEYWORDS: Sensors, Microelectromechanical systems, Gas sensors, Power consumption, Intelligent sensors, Resistors, Temperature metrology, Silicon, Resistance, Industry
The primary task of establishing an intelligent energy network is to achieve the intelligent measurement of energy sources such as water, electricity, and natural gas, etc. Among them, significant progress has been made in the intelligent measurement of electricity and water, but the intelligent measurement of natural gas is still an urgent technical problem to be solved. At present, the actually used gas flow meters in the market are still traditional mechanical gas meters, which require manually recording gas meter data in each household. The data cannot be connected to the internet and cannot collect instantaneous flow values in real time, which is not conducive to real-time peak shaving of the energy network and compatibility with national intelligent energy network projects. The MEMS gas flow sensor studied in this article has the advantages of small size, light weight, low power consumption, high reliability, high sensitivity, and easy integration, which is a highly promising technical means to solve the intelligent measurement of natural gas.
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