Vibrations in engineering and technology

Bratishko Viacheslav – Doctor of Technical Sciences, Professor, Dean of the Faculty of Mechanical Engineering of the National University of Life Resources and Environmental Sciences of Ukraine (15 Heroiv Oborony St., Kyiv, 03041, e-mail: vbratishko@nubip.edu.ua, orcid: http://orcid.org/0000-0001-8003-5016)

Hraniak Valerii – Candidate of Technical Sciences, Associate Professor, Head of the Department of Electrical Power Engineering, Electrical Engineering and Electromechanics of Vinnytsia National Agrarian University (3 Sonyachna St., Vinnytsia, 21008, Ukraine, e-mail: titanxp2000@ukr.net, https://orcid.org/0000-0001-6604-6157)

The article discusses the methodology for designing a temperature recorder for livestock facilities based on the ADC10 programmable logic controller (PLC). This solution was developed to meet the growing demand for temperature measurement systems suitable for use in the agricultural sector, particularly in livestock facilities. The key requirements for such systems include versatility, reliability, low cost, low energy consumption, and sufficient speed to effectively execute automated climate control algorithms that ensure optimal conditions for animal husbandry.

One of the main challenges in the design process is improving the noise immunity of the communication channel, as livestock facilities often experience strong electromagnetic interference that can distort the transmitted data. The article proposes a combined use of software and hardware approaches to achieve high noise immunity. Specifically, the methodology involves using a two-block mode of operation for the communication channel, which provides better signal stability in the presence of electrical interference. Additionally, the use of a low-pass filter at the output is suggested to effectively suppress unnecessary high-frequency signals and reduce noise, thereby improving the accuracy of data transmission.

Another important aspect discussed in the article is reducing the cost of the temperature recorder. To achieve this, the ADC10 programmable logic controller with an integrated temperature sensor was selected, which significantly reduces the manufacturing costs of the equipment. To improve the accuracy of temperature measurements, the article suggests implementing automatic calibration algorithms when the device's power supply is turned on. Additionally, original circuit solutions are presented to eliminate parasitic grounding loops that arise from the flow of reverse current through conductors shared with other elements of the circuit. This significantly enhances measurement accuracy by removing sources of errors caused by the influence of external electrical signals on the measurement part of the circuit.

These approaches together offer an effective and reliable solution for temperature monitoring and control in livestock facilities, ensuring the precise and cost-efficient management of environmental conditions critical to animal welfare.

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