期刊
JOURNAL OF SENSOR AND ACTUATOR NETWORKS
卷 2, 期 4, 页码 761-779出版社
MDPI
DOI: 10.3390/jsan2040761
关键词
environmental sensors; wireless sensors; robust enclosures; rapid prototyping
资金
- University of Glasgow Kelvin- Smith Scholarship
Sensors deployed in natural environments, such as rivers, beaches and glaciers, experience large forces and damaging environmental conditions. Sensors need to be robust, securely operate for extended time periods and be readily relocated and serviced. The sensors must be housed in materials that mimic natural conditions of size, density, shape and roughness. We have developed an encasement system for sensors required to measure large forces experienced by mobile river sediment grains. Sensors are housed within two discrete cases that are rigidly conjoined. The inner case exactly fits the sensor, radio components and power source. This case can be mounted within outer cases of any larger size and can be precisely moulded to match the shapes of natural sediment. Total grain mass can be controlled by packing the outer case with dense material. Case design uses Solid-Works (TM) software, and shape-matching involved 3D laser scanning of natural pebbles. The cases were printed using a HP Designjet (TM) 3D printer that generates high precision parts that lock rigidly in place. The casings are watertight and robust. Laboratory testing produces accurate results over a wider range of accelerations than previously reported.
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