Monografias, Dissertações e Teses
URI permanente desta comunidadehttps://repositorioacademico.universidadebrasil.edu.br/handle/123456789/1
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3 resultados
Resultados da Pesquisa
Item Desenvolvimento de protótipo eletrônico para manejo de cortina, ventilador e nebulizador em instalações para suínos(Universidade Brasil, 2024) Faria, Ricardo de Souza; Zeferino, Cynthia Pieri; Pereira, Luiz Arthur MaltaThe climate has a significant impact on swine production, being a decisive factor in achieving productivity and, consequently, the success of the activity. Environmental factors must be monitored to maintain favorable conditions; thus, it is necessary to develop accessible technologies to measure the microclimate of swine farms. The study aimed to develop a low-cost electronic prototype to assist in maintaining thermal comfort in small and medium-sized swine facilities. The prototype was developed using the Arduino Mega platform and combines the measurement of environmental variables (air temperature, relative humidity and black globe temperature) to calculate the dew point and ambience indices (Temperature and Humidity Index; THI and Black globe-humidity index; BGHI). The equipment classifies thermal stress and, through programming, indicates the decisions to be made regarding the activation of curtains, fans and nebulizers. The total cost to manufacture a sample was US$ 97.80 (in US dollars). The laboratory tests were conducted under three different conditions and their results confirmed the functionality, thus validating the prototype. In the indoor environment, in the shade, the stress was moderate and the management measures proposed by the prototype were the complete opening of the curtains, with fans on. In the outdoor environment, in the sun, the stress was severe and the measures proposed were the complete opening of the curtains, with fans and nebulizers on. In the outdoor environment at night, there was no heat stress, therefore, no type of management was proposed. In conclusion, the developed and validated prototype is configured as an efficient and low-cost technological tool to assist in maintaining thermal comfort in swine facilities, both for subsistence and on a commercial scale for small and medium-sized producers.Item Desenvolvimento de mensurador de granulometria em fábricas de rações para suínos(Universidade Brasil, 2021) Evangelista, Mariane Zabotto; Zeferino, Cynthia PieriThe objective was to develop an unprecedented particle size measurer for swine feed factory. This is because there are difficulties to get an ideal granulometry in the feed production, due absence practical technologies available inside market. The prototype was made of hardware parts (stand to collect ground grains sample, digital microscope, lighting ring, white leds, pneumatic cylinder, air compressor, microscope tube, potentiometer, solenoid valve, sphincter set and set of fasteners) and software parts (programation development with environment PyCharm Community®, version 2020.3, and the libraries Scipy®, Matplotlib®, Datetime®, Numpy®, Time®, Imutils® e Open CV®). The average geometric diameter was calculated for 02 treatments: T1 (sendding samples of 160 g ground grains to laboratory) and T2 (removal of 500 g ground grains to calculate with the prototype). LPV, IRR and simple and discounted payback was canculated for economic viability. In T1, the mean AGD found was 828,56 μm and marjority number of grains was at 500 μm gap. In T2, the mean average geometric diameter found was between 831,8 ± 124,6 μm e 1258,1 ± 445,1 μm, being these variations no significance (p≥0,05). These results suggests that measurer develop provides AGD values identification with more detailment, because it made individual read for each grain, don’t considering weight critery, what is approached in T1. LPV and IRR were positive (R$ 8.570.902,71 and 387,34%, respectively) and the simple and discount payback’s were less than 1 month. Thus, as the product doesn’t give a simple AGD average, like what is made in laboratorial methodology by density, the measurer has more details to calculation method. Moreover, the economic viability was positive, being low cost and with easy buy by farmers, commercial feed factory or machines industry.Item Desenvolvimento de mensurador de granulometria em fábricas de rações para suínos(Universidade Brasil, 2021) Evangelista, Mariane Zabotto; Zeferino, Cynthia PieriThe objective was to develop an unprecedented particle size measurer for swine feed factory. This is because there are difficulties to get an ideal granulometry in the feed production, due absence practical technologies available inside market. The prototype was made of hardware parts (stand to collect ground grains sample, digital microscope, lighting ring, white leds, pneumatic cylinder, air compressor, microscope tube, potentiometer, solenoid valve, sphincter set and set of fasteners) and software parts (programation development with environment PyCharm Community®, version 2020.3, and the libraries Scipy®, Matplotlib®, Datetime®, Numpy®, Time®, Imutils® e Open CV®). The average geometric diameter was calculated for 02 treatments: T1 (sendding samples of 160 g ground grains to laboratory) and T2 (removal of 500 g ground grains to calculate with the prototype). LPV, IRR and simple and discounted payback was canculated for economic viability. In T1, the mean AGD found was 828,56 μm and marjority number of grains was at 500 μm gap. In T2, the mean average geometric diameter found was between 831,8 ± 124,6 μm e 1258,1 ± 445,1 μm, being these variations no significance (p≥0,05). These results suggests that measurer develop provides AGD values identification with more detailment, because it made individual read for each grain, don’t considering weight critery, what is approached in T1. LPV and IRR were positive (R$ 8.570.902,71 and 387,34%, respectively) and the simple and discount payback’s were less than 1 month. Thus, as the product doesn’t give a simple AGD average, like what is made in laboratorial methodology by density, the measurer has more details to calculation method. Moreover, the economic viability was positive, being low cost and with easy buy by farmers, commercial feed factory or machines industry.