DETERMINING A TECHNIQUE FOR TRANSMITTING MEASURING DATA ON THE SPATIAL POSITIONING OF THE PIERCING HEAD IN SMALL-SIZE INSTALLATIONS DURING CONTROLLED SOIL PIERCING
| Autor: | Oleksandr Koval, Vitaliy Vlasovets, Yevhenii Chepusenko, Nina Lyubymova, Tatyana Vlasenko, Vladimir Suponyev, Artem Naumenko, Vitalyi Sakhatsky |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Computer science
Bar (music) 020209 energy Acoustics 0211 other engineering and technologies Energy Engineering and Power Technology 02 engineering and technology Signal Industrial and Manufacturing Engineering waveguide path inhomogeneity Transmission line transmission coefficient Management of Technology and Innovation Distortion 021105 building & construction lcsh:Technology (General) 0202 electrical engineering electronic engineering information engineering Maximum power transfer theorem lcsh:Industry Transmission coefficient Electrical and Electronic Engineering piercing head Applied Mathematics Mechanical Engineering System of measurement measuring system Computer Science Applications ABCD matrix Control and Systems Engineering lcsh:T1-995 lcsh:HD2321-4730.9 Data transmission |
| Zdroj: | BASE-Bielefeld Academic Search Engine Eastern-European Journal of Enterprise Technologies, Vol 5, Iss 5 (107), Pp 32-40 (2020) |
| Popis: | For laying of underground utility systems in urban conditions by the method of horizontally directed soil piercing, small-sized units are designed. Such units should have measurement systems for determining the spatial position of the piercing head. In known systems, the surface layer of the soil is used as a data transmission line for transmitting measurement information. This method of transmitting information signals in urban conditions is not very acceptable. Ground-based objects reflect electromagnetic radiation of the head transmitter which leads to distortion of the directional diagram of the emitter and complicates the reliable reception of measurement information. It was proposed to use an autonomous measuring system with an operating frequency of 5GHz based on Wi-Fi technologies and an unconventional method of transmitting measurement information using hollow steel bars in the piercing unit itself. This transmission line has periodic discontinuities because of the bar design. These discontinuities accumulate as the piercing head advances. For the basic vibration type Н11, more accurate analytical expressions were obtained for calculating the power transfer coefficient of the measurement signal in such non-uniform lines. It was shown that inhomogeneity of the transmission line in comparison with its surface resistance does not significantly affect the transmission coefficient. For example, damping in the line increased by 1.2dB with the maximum length of inhomogeneity of 5mm and the total length of jointed bars of 50m. It has been theoretically proven that the range of soil piercing with reliable signal reception can be up to 50meters. The proposed method for transmitting information signals makes it possible to reduce the transmitter power, ensure noise immunity of the measuring system, and reliable reception of the measuring information throughout the entire piercing path |
| Databáze: | OpenAIRE |
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