Rachmi, Shania and Prof. Dr. Ing. Setyawan Purnomo Sakti, M. Eng. and Dewi Anggraeni, S.Si., M.Si. (2024) Rancang Bangun Sensor Pendeteksi Massa Jenis Pada Susu Segar Dengan Sensor Load Cell Berbasis Stm32f401ccu6 Onboard. Sarjana thesis, Universitas Brawijaya.
Abstract
Susu segar yang merupakan susu murni tanpa perlakukan tambahan selain pendinginan, seringkali mengalami penurunan kualitas akibat penambahan air oleh peternak untuk meningkatkan volume dan keuntungan. Penurunan kualitas ini sulit dideteksi secara kasat mata dan dapat menurunkan nilai nutrisi susu serta menyebabkan penolakan oleh koperasi susu. Pada penelitian ini telah berhasil mengembangkan sensor pendeteksi massa jenis susu segar menggunakan load cell berbasis STM32F401CCU6 Onboard. Sensor ini didesain menggunakan 3D print tronxy dengan tinggi 7,6 cm dan dilengkapi dengan beban silinder berbahan resin yang memiliki berat 11,41 gram, diameter 2 cm, dan tinggi 2,8 cm. Kalibrasi dilakukan menggunakan larutan NaCl dan aquades, menghasilkan hubungan linier antara massa jenis dan tegangan output dengan persamaan regresi y = 31,0611x – 0,40407. Pengukuran massa jenis susu dengan variasi konsentrasi air menunjukkan bahwa massa jenis menurun seiring peningkatan konsentrasi air, mendekati massa jenis air (1 g/mL). Data pengukuran massa jenis di pos princi menggunakan lactodensimeter dan load cell menunjukkan rata-rata perbedaan 0,008. Hasil penelitian ini mengikuti prinsip Hukum Archimedes, di mana beban benda yang tercelup dalam cairan akan berkurang sesuai dengan volume cairan yang dipindahkan oleh benda tersebut. Semakin banyak air yang ditambahkan dalam susu, semakin berat beban benda yang tercelup karena densitas cairan menurun. Hal ini juga menyebabkan nilai gaya apung dan massa jenis susu semakin berkurang.
English Abstract
Fresh milk, which is pure milk with no additional treatment other than cooling, often experiences a decline in quality due to the addition of water by farmers to increase volume and profits. This quality degradation is difficult to detect visually and can reduce the nutritional value of the milk as well as lead to rejection by milk cooperatives. This study successfully developed a fresh milk density sensor using a load cell based on the STM32F401CCU6 Onboard. The sensor was designed using a Tronxy 3D printer with a height of 7.6 cm and equipped with a cylindrical resin weight that has a mass of 11.41 grams, a diameter of 2 cm, and a height of 2.8 cm. Calibration was conducted using NaCl solution and distilled water, resulting in a linear relationship between density and output voltage with the regression equation y = 31,0611x – 0,40407. Measurements of milk density with varying water concentrations showed that density decreases with increasing water concentration, approaching the density of water (1 g/mL). Data on density measurements at the principal post using a lactodensimeter and load cell showed an average error of 0.0076. This study's results follow Archimedes' principle, where the weight of an object submerged in a liquid decreases according to the volume of liquid displaced by the object. The more water added to the milk, the heavier the submerged object becomes because the liquid density decreases. This also causes the buoyant force and milk density to decrease.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | 052409 |
| Uncontrolled Keywords: | Massa jenis, Sensor Load Cell, Kualitas Susu Segar |
| Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam > Fisika |
| Depositing User: | Unnamed user with username nova |
| Date Deposited: | 01 Oct 2024 01:39 |
| Last Modified: | 01 Oct 2024 01:39 |
| URI: | http://repository.ub.ac.id/id/eprint/225450 |
![[thumbnail of DALAM MASA EMBARGO]](http://repository.ub.ac.id/style/images/fileicons/text.png) |
Text (DALAM MASA EMBARGO)
Shania Rachmi.pdf Restricted to Registered users only Download (5MB) |
Actions (login required)
 |
View Item |