scholarly journals DESIGN OF GPS AND COMPASS HELMET VISUAL DATA USING MICROCONTROLLER FOR MARINE FORCE OF INDONESIAN NAVY

JOURNAL ASRO ◽  
2020 ◽  
Vol 11 (03) ◽  
pp. 47
Author(s):  
Endin Tri Hartanto ◽  
Erpan Sahiri ◽  
Agung Gunawan ◽  
Muhammad Sigit Purwanto

The Marines are a component of the combat forces owned by the Navy. In carrying out their duties as infiltration forces and landing forces, sophisticated equipment is needed to support each movement in terms of knowing the position of coordinates in the form of latitude longitude and compass direction to facilitate the movement of troops in carrying out operational tasks. For this reason, a tool was made to visually know the position of the latitude and longitude of the compass, making it easier for troops to carry out their duties both on the training ground and on the battlefield. This tool is in the form of a Design Combat Helmet for Visual Data Viewer GPS and Microcontroller-based Compass for the Navy Navy. This tool uses Arduino Mega Pro Mini 2560 as a microcontroller, V.KEL 2828U7G5LF as a GPS module, HMC5883L as a Compass module and Wemos Oled LCD 64x48 0.66 "as an analog data viewer. This tool has a working principle like Google Glass that can display data visually. How it works in order to display data visually is to use the reflection of a small mirror that will be enlarged using a convex lens or loop lens and then transmitted the reflection to a visual viewer that is placed in front of the eye. In order to get data in the form of latitude longitude and compass direction alternately a push button is used which is designed as a data selector switch or counter. In testing, this tool proved to be accurate in taking GPS data and compass direction after compared with equipment that has the same function. For the V. KEL2828U7G5LF GPS Module compared to FURUNO GPS and Google Map, while for the HMC5883L Compass module compared to the Android Compass Application.   Keywords: GPS data, Compass, Visual Combat Helmet

2020 ◽  
Vol 13 (2) ◽  
pp. 55-61
Author(s):  
Alfa Satya Putra ◽  
Jennifer Novia Nursalim ◽  
Arnold Aribowo ◽  
Hendra Tjahyadi

Fuel shortage is a common problem in Indonesia. This prompted many cases of vehicle fuel theft. As a solution to this problem, an Arduino-based vehicle fuel theft detector system is implemented. Arduino-based vehicle fuel theft detector system is a prototype that uses Arduino UNO as a microcontroller, IComSat v1.1 SIM900 GSM/GPRS Shield to communicate with mobile phone, fuel level sensor as a volume detector, and push button as a detector to check whether the fuel tank’s lid is open or closed. The working principle of this system is to detect the state of the fuel tank lid. When the lid is open, the system will make a phone call. Then, the system will keep track of fuel volume. If there is a drastic decrease in volume, the system will send information about the decreasing volume in the form of a short message to the owner of the vehicle. The success rate of the communication system between Arduino UNO and other electronic devices is 100%. Accuracy of fuel level sensor is 90%. Success rate of push button switch in detecting the state of fuel tank’s lid is 100%. Success rate of GSM Shield communication is 90%.


PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e4215 ◽  
Author(s):  
R. Scott Winton ◽  
Natalia Ocampo-Peñuela ◽  
Nicolette Cagle

Bird collisions with windows are an important conservation concern. Efficient mitigation efforts should prioritize retrofitting sections of glass exhibiting the highest mortality of birds. Most collision studies, however, record location meta-data at a spatial scale too coarse (i.e., compass direction of facing façade) to be useful for large buildings with complex geometries. Through spatial analysis of three seasons of survey data at a large building at a university campus, we found that GPS data were able to identify collision hotspots while compass directions could not. To demonstrate the broad applicability and utility of this georeferencing approach, we identified collision hotspots at two additional urban areas in North America. The data for this latter exercise were collected via the citizen science database, iNaturalist, which we review for its potential to generate the georeferenced data necessary for directing building retrofits and mitigating a major source of anthropogenic bird mortality.


Author(s):  
Zuchao Wang ◽  
Xiaoru Yuan ◽  
Tangzhi Ye ◽  
Youfeng Hao ◽  
Siming Chen ◽  
...  

2021 ◽  
Vol 11 (3) ◽  
pp. 155-160
Author(s):  
Aldi Alamsyah ◽  
Hendi Purnata ◽  
Muhammad Yusuf

Crane merupakan alat yang digunakan untuk mempermudah dalam memindahkan dan mengangkat suatu barang. Peneltian ini bertujuan untuk membuat sistem mini crane untuk optimalisasi pemindahan barang berbasis otomasi industri yang memanfaatkan PLC (programmable logic controller) sebagai kontroler dan pneumatik sebagai aktuatornya. Sistem ini menggunakan PLC Mitsubishi sebagai pengendali utama. PLC bekerja berdasarkan masukan yang diperoleh dari selector switch untuk memilih sistem kerja manual atau otomatis. Terdapat push button sebagai tombol start dan stop, limit switch sebagai pembatas gerak sumbu X dan Y dari Rodless Cylinder untuk memindahkan barang, proximity sensor untuk mendeteksi keberadaan dari barang yang akan dipindahkan dan yang telah dipindahkan. Pada hasil penelitian ini sensor yang digunakan untuk mendeteksi jenis material benda kerja menggunakan sensor proximity inductive. Dalam satu proses crane membutuhkan waktu maksimal 15,37 detik.  Berat maksimal yang dapat dihisap vacuum pada tekanan 3 bar adalah 650g, pada tekanan 4 bar adalah 950g, dan pada tekanan 6 bar adalah 1059g.


Author(s):  
Godfrey C. Hoskins

The first serious electron microscooic studies of chromosomes accompanied by pictures were by I. Elvers in 1941 and 1943. His prodigious study, from the manufacture of micronets to the development of procedures for interpreting electron micrographs has gone all but unnoticed. The application of todays sophisticated equipment confirms many of the findings he gleaned from interpretation of images distorted by the electron optics of that time. In his figure 18 he notes periodic arrangement of pepsin sensitive “prickles” now called secondary fibers. In his figure 66 precise regularity of arrangement of these fibers can be seen. In his figure 22 he reproduces Siegbahn's first stereoscopic electron micrograph of chromosomes.The two stereoscopic pairs of electron micrographs of a human chromosome presented here were taken with a metallurgical stage on a Phillips EM200. These views are interpreted as providing photographic evidence that primary fibers (1°F) about 1,200Å thick are surrounded by secondary fibers (2°F) arranged in regular intervals of about 2,800Å in this metanhase human chromosome. At the telomere the primary fibers bend back on themselves and entwine through the center of each of each chromatid. The secondary fibers are seen to continue to surround primary fibers at telomeres. Thus at telomeres, secondary fibers present a surface not unlike that of the side of the chromosome, and no more susceptible to the addition of broken elements from other chromosomes.


Author(s):  
K. Shiraishi ◽  
T. Katsuta ◽  
S. Ozasa ◽  
H. Todokoro

We have recently completed a newly designed 650KV electron microscope. An external view of this advanced instrument is shown in Figure 1. A symmetrical Cockcroft-Walton circuit has been adopted as the high voltage generator. The cathode is heated by high frequency power; a battery is not employed. The high voltage stability is better than 1 x 10-5/min.The sectional diagram of the column shown in Figure 2 is 420mm in diameter and 2750mm in height. The illuminating system consists of a double condenser lens and a magnetic alignment device. Dual deflector assemblies for dark and bright field images, selectable by push button, are built beneath the condenser lens. Two selectable stigmator power supplies are also provided for dark and bright field image operation.


Author(s):  
Ralph Oralor ◽  
Pamela Lloyd ◽  
Satish Kumar ◽  
W. W. Adams

Small angle electron scattering (SAES) has been used to study structural features of up to several thousand angstroms in polymers, as well as in metals. SAES may be done either in (a) long camera mode by switching off the objective lens current or in (b) selected area diffraction mode. In the first case very high camera lengths (up to 7Ø meters on JEOL 1Ø ØCX) and high angular resolution can be obtained, while in the second case smaller camera lengths (approximately up to 3.6 meters on JEOL 1Ø ØCX) and lower angular resolution is obtainable. We conducted our SAES studies on JEOL 1ØØCX which can be switched to either mode with a push button as a standard feature.


2019 ◽  
Vol 5 (1) ◽  
pp. 97-106
Author(s):  
Rudi Budi Agung ◽  
Muhammad Nur ◽  
Didi Sukayadi

The Indonesian country which is famous for its tropical climate has now experienced a shift in two seasons (dry season and rainy season). This has an impact on cropping and harvesting systems among farmers. In large scale this is very influential considering that farmers in Indonesia are stilldependent on rainfall which results in soil moisture. Some types of plants that are very dependent on soil moisture will greatly require rainfall or water for growth and development. Through this research, researchers tried to make a prototype application for watering plants using ATMEGA328 microcontroller based soil moisture sensor. Development of application systems using the prototype method as a simple method which is the first step and can be developed again for large scale. The working principle of this prototype is simply that when soil moisture reaches a certainthreshold (above 56%) then the system will work by activating the watering system, if it is below 56% the system does not work or in other words soil moisture is considered sufficient for certain plant needs.


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