The work is devoted to the problem of three-dimensional models of flow profiles in the hydrodynamic system’s channels restorating. A multichannel ultrasonic flow meter based on the time-pulse method was developed and investigated for measuring velocity and visualizing of liquid and gas flows structures. The device determines the downstream and upstream time of an ultrasonic pulse flight in three channels and converts it into flow velocity and then into volumetric flow. A technology that allows to synchronize parallel tasks is used to organize the stable operation of the microcontroller. The main problems of technology implementation were the large amount of memory occupied and the low "transparency" of processes. The problems of the memory optimization and minimizing of power consumption was solved.
The problem with existing flow meters is a relatively high measurement error, which is associated with a lack of information on the flow profile. In order to create a reference device that makes it possible to study the flow profile due to a larger number of sensors, with bore size 50 mm primary transducer with fourteen channels is developing and manufacturing. This device can provide more accurate results due to the use of multiple channels of ultrasonic signal passage, which makes it possible to calculate large time points along the entire section of the pipe, as well as the ability to visualize the flow profile. In the course of the work, a 3D model of the primary transducer was developed in accordance with the requirements and conditions for the passage of ultrasound through a liquid medium, when it was necessary to take into account the simultaneous operation of several channels at once, taking into account the fact that the paths of ultrasound passage should not intersect. Processing several signals at once becomes possible, since five TDC microcontrollers will be used for all channels.
The development of piezoelectric and optical elements from microcells was carried out and models were prepared for printing on a 3D printer. These designs can be practically used as piezoacoustic or piezoelectric sensors, if added to the composition of the piezoelectric powder, for example, in ultrasonic flow meters, or used to create optical structures, for example, diffractive optical elements. Elements obtained by 3D printing will have properties that differ from the properties of elements obtained by standard methods.
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