It is no secret that massive metal structures and structures such as bridges, wind turbines and scaffolding, fastened with bolts, “relax” over time, which is fraught with serious consequences.
Scientists from the Fraunhofer German Cluster of Cognitive Internet Technologies (a division of the Fraunhofer Society, the European Association of Applied Research Institutes – ed. Techcult) proposed to solve this problem by creating a smart device consisting of a bolt and a washer.
How it works? A pressure sensor made of the thinnest piezoresistive film – DiaForce – is built into the washer. If the bolt is tightened to the stop, the film fixes the pressure value at three different points, but as soon as the bolt weakens the electrical resistance, it is immediately found, which, in turn, fixes the radio module in the upper part of the bolt.
Further, the encrypted modem “alarm” signal belongs to the bizhays base station, Bagodar’s person on a special online portal creates the possibility of constant monitoring of all ec bolted connections.
The power source function of the smart bolt is performed by a built-in thermoelectric generator operating at different temperatures between the bolt head and the surrounding air. In some sai, there is a lot of sunlight around the code, rebirth is allowed p p battery
Source: Tech Cult
