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Journal : JURNAL MAHAJANA INFORMASI

Penerapan Internet Of Things Untuk Memantau Aktivitas Jantung Berbasis Android Priyulida, Fitri; B Fona; Eriansyah Putra; Situmorang, Harold
Jurnal Mahajana Informasi Vol 8 No 1 (2023): JURNAL MAHAJANA INFORMASI
Publisher : Universitas Sari Mutiara Indonesia Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/jurnalmi.v8i1.4243

Abstract

The monitoring system of the heart's electrical activity is the basis of the electrocardiograph (ECG) in monitoring the condition of the heart, the ECG series consists of biopotential amplifiers from an ECG instrument which is the main component in this study, recording cardiac activity is still a burden for the medical world in the use and results of the expected output. From the results of research conducted on the heart rate graph (BPM) at the Medan Health Facility Security Center, the results of research were obtained using the MPS450 multiparameter simulator, where when changes were made to the signal gradually changes in values at 60, 80, 100, 120, 150, 180, 200, 220 had a distance change in time in sending and receiving data displayed on the android monitor screen (LCD). The results issued by android are graphic displays that can be saved in the form of images in JPEG format periodically or real time so as to facilitate and reduce the use of
Analisa Hasil Pengelasan Antara Trafo Las Kumparan Lilitan Pabrikan Dengan Konvensional Usman; Cahyadi, Catra Indra; Paino; Hasibuan, Eriansyah S
Jurnal Mahajana Informasi Vol 9 No 1 (2024): JURNAL MAHAJANA INFORMASI
Publisher : Universitas Sari Mutiara Indonesia Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/jurnalmi.v9i1.5027

Abstract

The electric welding system requires a welding transformer that is usually classified as direct current (DC) or alternating current (AC). In electric welding, a separate transformer is provided as a source for regulating the required current during the welding process. The operation of the transformer during welding is closely related to the needs of the current, the diameter of the welding wire, and the thickness of the material being welded. The difference between a conventional coil winding transformer and a manufacturer's coil winding transformer lies in the welding results and the specimens obtained from testing a type of material, which is steel plate ST37 with a thickness of 8mm and a width of 40mm, using electrodes E-6013 with diameters of 2.6mm and 3.2mm. The welding joint method used is a single V groove butt joint. The welding tests of both transformers prove that the penetration, width, and height of the weld bead with the Manufacturer's coil winding transformer are quite good compared to the Conventional coil winding transformer. Based on the welding test results of both transformers, the Manufacturer's coil winding transformer using electrode type E-6013 achieved the highest bending test strength with a Crack load value of 33.701 kN, while the Conventional coil winding transformer had a value of 27.335 kN, both using the same current of 120 Amperes.".