scholarly journals RANCANG BANGUN TACHOMETER DIGITAL BERBASIS ARDUINO DILENGKAPI CHARGING DAN MODE PENYIMPAN DATA

eLEKTRIKA ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 6
Author(s):  
Imam Tri Harsoyo ◽  
Andi Kurniawan Nugroho ◽  
Nuriman Nuriman
Keyword(s):  
Data Storage ◽  
Rotation Speed ◽  
Tolerance Limit ◽  
Measuring Instrument ◽  
Average Percentage ◽  
Measurement Results ◽  
The World ◽  
Digital Tachometer ◽  
Sd Card

A good and feasible centrifuge is needed in the world of health, therefore a digital tachometer is needed to calibrate a centrifuge. Digital tachometer is a measuring instrument used to measure the rotation speed of a motor. This tachometer will be tested to function by being compared to using Digital Laser Photo Tachometer. This tachometer will display the number of rotations per minute of a motor according to the speed setting on the centrifuge using the output of this E18-D80NK sensor which will later be processed by the Arduino Nano. As for this feature charger and data storage mode, so that user can save the data of measurement results on SD Card, and beside that user can also be a way of charging when after usage or before usage. At testing the tool used point settings 1000, 2000, 3000, 4000, 5000, and 12000 RPM. Based on the measurement results of centrifuge using tachometer module and comparison tachometer have average percentage of error varying at each setting point. The smallest error 0.8% at the setting Point 3000 RPM, while the largest error 4.9% at the setting point 1000 RPM. The Tacometer error value on this Centrifuge measurement is still within the tolerance limit of ± 10%

scholarly journals Measuring System of Temperature, Humidity, and Light Intensity for Plant Monitoring in BALITJESTRO, Batu City

2021 ◽  
Vol 6 (1) ◽  
pp. 33-39
Author(s):  
Tomy Andre Ansyah ◽  
◽  
Heriyanto Heriyanto ◽  
Buyung Al Fanshuri ◽  
◽  
...  
Keyword(s):  
Light Intensity ◽  
Data Storage ◽  
Relative Error ◽  
Agricultural Research ◽  
Measuring System ◽  
Measuring Instrument ◽  
Literature Study ◽  
Process Data ◽  
Plant Monitoring ◽  
Sd Card

Therefore, a tool is needed to make it easier for researchers, so there is no need to go back and forth to retrieve data. This research has the following research method stages, (1) literature study of theories to design the system from the tools to be made, (2) system design, (3) analysis of device requirements, (4) tool calibration process (data can be said to be valid if the error does not exceed one per cent), and (5) data processing is according to agricultural research needs. In this research, a tool that has calibrated with an appropriate measuring instrument produced. Measuring temperature, humidity, and light intensity designed with a microcontroller and other sensors with a data storage base on an SD card. The measuring results show that the temperature values fluctuate between 16.9 °C to 28.2 °C. The value of air humidity tends to remain at the value of 99.9 per cent. At the same time, the value of light intensity ranges from 332 to 606 Cd. The relative error of temperature, humidity, and light intensity is 0.007, 0.082, and 0.016 per cent respectively. Therefore, each measurement indicator has a relative error value of less than one per cent so that the designed tool has valid and under the standardized measuring instrument.

Pemantau Gas Metana, Suhu, dan Kelembaban sebagai Penyebab Efek Rumah Kaca Dipadang Lamun Berbasis Internet Of Things

Kilat ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 223-234
Author(s):  
Lukman Medriavin Silalahi ◽  
Irfan Kampono ◽  
Agus Dendi Rochendi ◽  
Muhamad Husni ◽  
Raden Sutiadi ◽  
...  
Keyword(s):  
Data Storage ◽  
Humidity Sensor ◽  
Data Transfer ◽  
Accuracy Rate ◽  
Methane Gas ◽  
Measurement Results ◽  
Sensitivity Rate ◽  
Sensor Temperature ◽  
Sd Card ◽  
Shallow Seas

Seagrass is a plant that covers coastal areas/shallow seas that can produce methane gas (CH4) during the decomposition process. The occurrence of decay caused by microbes in seagrass plants that have died in the process produces methane gas (CH4) as the cause of the greenhouse effect. Methane gas monitoring system (CH4) is proposed using MQ-4 sensor, temperature and humidity sensor (DHT11) using NodeMCU ESP8266 module, SD Card module as backup data storage and processed with local database and through mysql database the data will be displayed on the website page for information. . From the tests carried out, the response time for DHT11 is 5.6 seconds and MQ-4 is 1.5 seconds. It has a reading sensitivity rate of 99.92% for DHT11, 99.997% for MQ-4. The accuracy rate for DHT11 is a multiple of 1. For the MQ-4 sensor it has an accuracy level of 2 digits behind the comma. The tool has a data transfer rate of up to that which appears on the front-end 0.2736. With this tool, checking measurement results can be done quickly and can be done from anywhere.

scholarly journals PENGUKUR TINGGI BADAN MENGGUNAKAN SENSOR ULTRASONIK BERBASIS MIKROKONTROLER ATMEGA328 DENGAN OUTPUT SUARA

CCIT Journal ◽  
2016 ◽  
Vol 9 (2) ◽  
pp. 148-156
Author(s):  
Ignatius Agus Supriyono ◽  
Ferry Sudarto ◽  
Muhammad Khiabani Fakhri
Keyword(s):  
Human Error ◽  
Ultrasonic Waves ◽  
Scale Height ◽  
Measuring Instrument ◽  
Accuracy And Precision ◽  
Measurement Results ◽  
The World ◽  
Height Gauge ◽  
To Receive ◽  
Bounce Back

Measurement is important in the world of science. On these readings on the scale height measuring instrument manual that humans do have a level of accuracy and precision are less so frequent occurrence of human error. Then the required height gauges that can work automatically, perform the measurement process, read the measurement results, as well as notify the measurement results with the ATmega328 microcontroller-based voice output. Digital Height Measuring Circuit uses ultrasonic sensors are used to detect objects around sensor.Jika ultrasonic waves bounce back to the receiver, means there is an object in the vicinity of the sensor. The microcontroller will calculate the time it takes to receive ultrasonic waves and determine the distance between the sensor with the floor. Digital height gauge be important in minimizing human error that often occurs at the time of measurement manually. So as to improve efficiency in measuring height

DEVELOPMENT OF MACAMI (MARI MEMBACA DAN MEMAHAMI) INSTRUMENT USING MACROMEDIA FLASH 8 IN PRIMARY SCHOOLS

2020 ◽  
Vol 4 (3) ◽  
pp. 544
Author(s):  
Ermaida Dewi
Keyword(s):  
Reading Comprehension ◽  
Primary School ◽  
Product Design ◽  
Primary Schools ◽  
Measuring Instrument ◽  
School Students ◽  
Average Percentage ◽  
Measuring Devices ◽  
Comprehension Ability ◽  
Feasibility Test

The background of this research is an instrument of learning for reading comprehension which in general is still dominated by an instrument in the form of print out which makes the students’ interest to read is reduced. In addition, this instrument is usually done manually or handwritten so that the students’ work must be corrected manually and require some time to get the results. This study aims to develop instruments or measuring devices for reading comprehension in the Primary School in Pekanbaru and find out the feasibility of measuring devices for reading comprehension skills. This product is Macromedia Flash 8 based namely "MaCaMi" which stands forMari Membaca dan Memahami. The research method used was the 4D model with four stages, such as the define stage, the design phase, the develop phase, and the dessiminate stage which is limited to the third stage. The data of this study were obtained from product design expert validation questionnaire, questionnaire validated by linguists, teacher response questionnaire and students response questionnaire. The data were generated quantitatively and analyzed by using the assessment criteria to determine the product quality. The results of this study showed the assessment of product design experts in draft 1 had an average percentage of 69.61% with the appropriate category then had increased in draft 2 to 90.56% with the very feasible category. The results of  the feasibility test by linguists in draft 1 with had average percentage of 95.30% with the very feasible category then increased in draft 2 to 97.20% withn the very feasible category. The results of the teacher's response to the reading comprehension measuring instrument in the Primary School in Pekanbaru developed by researchers obtained an average percentage of 93.50% with a very good category and the results of students' responses to the measuring instrument obtained an average percentage of 89.90% with a category very good. Based on these results, it can be concluded that the product developed by researchers is feasible to be used as a measure of reading comprehension ability of primary school students.

Blockchain Encryption on Student Academic Transcripts using a Smart Contract

2021 ◽  
Author(s):  
Primasatria Edastama ◽  
Ninda Lutfiani ◽  
Qurotul Aini ◽  
Suryari Purnama ◽  
Isabella Yaumil Annisa
Keyword(s):  
Data Storage ◽  
Storage System ◽  
Digital Data ◽  
Decentralized System ◽  
Blockchain Technology ◽  
Educational Environments ◽  
The World ◽  
Technology Applications ◽  
E Learning ◽  
Data Storage System

As an innovation in the world of computers, blockchain has many benefits and is also widely applied in the world of education. Blockchain itself has many advantages, especially in the world of education. Blockchain is a digital data storage system that consists of many servers (multiserver). In this Blockchain technology, data created by one server can be replicated and verified by another server. By using this technology with a decentralized system and strong cryptography and can help colleges or universities to build infrastructure in the archive storage of transcripts, diplomas, and diplomas. Usage One of the blockchain technology applications in education is iBC, namely the e-learning Blockchain Certificate, book copyright, and also e-Portfolios. iBC or e-learning Blockchain Certificate is a tool designed to create, verify and also issue blockchain certificates. As has been supported by the IBC to create certificates that are globally verified and stored in a decentralized manner. Here will be presented use cases that are relevant in the use of Blockchain technology in educational environments, especially data processing in universities and we also try to design an IBC based on blockchain technology that can be used to support transparency and accountability of colleges or universities in issuing diplomas and grades. 

Infant Warmer Equipped with Digital Weight Scales

2021 ◽  
Vol 14 (2) ◽  
pp. 68-72
Author(s):  
Muhammad Jundi Al'Aziz ◽  
Bambang Guruh Irianto ◽  
Abd Kholiq
Keyword(s):  
Body Weight ◽  
Human Body ◽  
Maximum Weight ◽  
Maximum Capacity ◽  
External Calibration ◽  
Measurement Results ◽  
The World ◽  
Measured Load ◽  
Error Percentage ◽  
Standard Weight

Scales Scales in the world of health are used to measure human body weight such as baby scales. Newborns are very important to be weighed because it is used as a measure of the baby's health indication ranging from 2.4 kg to 4.2 kg. The author makes a tool for this to make it easier for users to weigh with a 7 segment display on the Infant Warmer tool and external calibration. By using a loadcell sensor with a maximum capacity of 5 kg, the loadcell can detect the weight of the load where the voltage generated by the loadcell of 0.7 mV at a load of 1 kg is amplified to 0.62 V by the PSA circuit using the AD620 IC and then processed by Arudino UNO as a microcontroller. The weight results will be displayed on the 7Segment display located on the Infant Warmer tool. In the study, the measured load included a weight of 0 kg to a maximum weight of 5 kg. The measurement of the data results was carried out 5 times each by comparing the modules that had been made with the standard weight, namely (lead). The data from the measurement results of the research module shows that when the weight of the measurement at 1 kg has an error percentage of 0.08%. Measurements at a weight of 2 kg have an error percentage of 0.05%. Measurement of weight 3 kg has a presentation error of 0.01%. Measurements at a weight of 4 kg have a presentation error of 0.02%. And measurements at a weight of 5 kg have an error percentage of 0.04%. Then the data from the measurement results of the research module shows the largest error presentation of 0.08% at a weight of 1 kg. And the data from the measurement results of the research module shows the smallest error presentation of 0.01% at a weight of 3 kg. Making a research module in the form of a scale placed on an infant warmer can make it easier for the wearer.

Data Storage Layout for Object-Based De-Duplication System

2013 ◽  
Vol 303-306 ◽  
pp. 2284-2288
Author(s):  
Fang Yan ◽  
Yu An Tan
Keyword(s):  
Data Storage ◽  
Storage System ◽  
Unstructured Data ◽  
Effective Solution ◽  
Advanced Method ◽  
Data Object ◽  
Object Based ◽  
The World ◽  
Long Time ◽  
Reduce Energy Consumption

The world is increasingly awash in more and more unstructured data. Object-based data de-duplication is the current most advanced method and is the effective solution for detecting duplicate data. We developed an energy saving policy for conventional disk based RAID systems. According to the characteristics of object-based data de-duplication, we introduce object layout strategies for unstructured data applications; disk accesses are concentrated in a part of the disks in a long time which is conducive to scheduling other disks into standby or shutdown mode. Our proposed methods reduce energy consumption of de-duplication storage system.

scholarly journals BOD Pressure in the sustainability of the Citarum River

2018 ◽  
Vol 52 ◽  
pp. 00037
Author(s):  
Resha Ayu Putri Belinawati ◽  
Tri Edhi Budhi Soesilo ◽  
Herdis Herdiansyah ◽  
Intan Nurul Aini
Keyword(s):  
Local Government ◽  
Biochemical Oxygen Demand ◽  
Quantitative Method ◽  
Oxygen Demand ◽  
River Pollution ◽  
Measuring Instrument ◽  
The World ◽  
Polluted Rivers ◽  
The Impact

As one of the 10 most polluted rivers in the world, Citarum river pollution has become the world’s spotlight. The pollution that occurred along the Citarum River in West Java has been the concern of the local government. Pollution not only comes from a plant and household, but also from industries. In this study the authors use descriptive quantitative method, where researchers will describe and compare the existing variables to see the possibilities that arise. Variable used is the number of industries that exist and how the impact against BOD. Biochemical Oxygen Demand (BOD) is a measuring instrument that is widely used to see the quality of oxygen levels in the water. In this paper shows that there is a possibility if BOD increases if the number of industries increases.

scholarly journals Estimating soil loss from a watershed in Western Deccan, India, using Revised Universal Soil Loss Equation

2016 ◽  
Vol 10 (1) ◽  
pp. 13-25 ◽  
Author(s):  
Veena Joshi ◽  
Nilesh Susware ◽  
Debasree Sinha
Keyword(s):  
Conservation Planning ◽  
Soil Loss ◽  
Tolerance Limit ◽  
Design Tool ◽  
Universal Soil Loss Equation ◽  
The World ◽  
Loss Models ◽  
Gis Environment ◽  
Semi Arid ◽  
Soil Loss Equation

USLE (Universal Soil Loss Equation) is the original and the most widely accepted soil loss estimation technique till date which has evolved from a design tool for conservation planning to a research methodology all across the globe. The equation has been revised and modified over the years and became a foundation for several new soil loss models developed all around the world. The equation has been revised as RUSLE by Renard et al. (1991) and is computed in GIS environment. The Revised equation is landuse independent which makes it a useful technique to apply in a variety of environment. The present paper is an attempt to estimate soil loss from a semi-arid watershed in Western Deccan, India by employing RUSLE. The region is a rocky terrain and sediments are restricted to only a few localities. The result indicates that the region is at the threshold of soil tolerance limit.

Establishment of Mathematical Model in Evaluation of Uncertainty in Indication Error Measurement Results

2014 ◽  
Vol 651-653 ◽  
pp. 428-431
Author(s):  
Xia Zhao
Keyword(s):  
Mathematical Model ◽  
Electrical Measuring ◽  
Electrical Measuring Instrument ◽  
Error Measurement ◽  
Measuring Instrument ◽  
Uncertainty In Measurement ◽  
Measurement Result ◽  
Three Phase ◽  
Measurement Results ◽  
Calibration Device

Taking Model DK-52 (Grade 0.05) multi-function three-phase electrical measuring instrument calibration device as an example, the paper describes how to evaluate the uncertainty in measurement result of indication errors in mathematical model.

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