Arduino Based Temperature And Humidity Monitoring Control System for Day Old Chicken (DOC) Cage

In general, conventional cattle sheds using manual systems and human labor are very reliable, in the conventional process of heating cattle sheds, we still encounter many using oil stoves and lamps as a DOC heating process. However, the use of oil stoves and lamps is dangerous and unstable. In addition to the DOC heater using the lamp, there is also a DOC heater using an element heater. The advantage of using a heating element, the temperature can be adjusted according to your needs. The use of heating elements in chicken coops is still rarely used. Therefore, a research was conducted on the manufacture of a temperature and humidity monitoring control system based on Arduino Mega in the Day Old Chicken (doc) cage. DHT 11 sensor accuracy level calibrated with room temperature measuring instrument Taffware HTC-2 is known DHT 11 sensor has an accuracy in reading temperature that is 96% with a dispute of 3.8%. And the accuracy in reading humidity is 89.8% with a difference of 11%.

Methods of Temperature Monitoring in Low Voltage Electrical Cables using Composite Materials

The article presents the most important methods and technologies used to monitor the temperature of low voltage power supply cables, which supply 400V in three-phase mode, trying to highlight the method of using composite materials, materials that are included in the material constructive of the cables, these having the role of temperature sensor. Temperature monitoring is performed along the electrical cables, to transmit in real time information on the evolution of temperatures along the entire length of the cable, at any point, during their entire life. The article will focus on the method of inserting optical fibres inside the power supply cables, which will be used as a temperature measuring instrument. Using the Reman effect, a method of reflecting the injected light at one end of the optical fibre, by processing the received signals, the evolution of the temperature inside the electric cable can be detected with great precision, over long distances and with great accuracy. the evolution of the temperature inside the electric.

Analisa Konveksi Paksa (Pemaksaan Udara Masuk) pada Proses Pembakaran Briket Ampas Sagu

In previous studies, the initial process of burning briquettes still takes a long time, i.e. app 15-20 minutes. In normal briquette burning, a flame comes out from the briquette hole surface. The purpose of this research is to find a solution to accelerate the burning process and then the solution to use this process easily. The main objective of this research is to examine the amount of heat generated from the briquettes burning process with the number of holes as much as 10, 12, and 14, and to measure the time of initial briquette burning until the first time the flame came out on the briquettes surface. The basic ingredients of briquettes used in this study were sago waste. The tools used are a moisture meter to measure the water content, an infrared thermometer, a temperature measuring instrument, a Stopwatch to measure time, a digital anemometer to measure the airflow speed. From this study, the results obtained indicate that the combustion process in a forced air convection conditions, resulting in the rate of heat transfer as follows: a). For using the 10 holes briquettes, the heat transfer rate is about 8.51 watts, b). In the burning of 12 holes briquettes, the resulting heat transfer rate is about 16.57 watts, c). While on the 14 holes briquettes burning, the rate of heat transfer is about 20.43 watts. When heat energy is applied to boil 5 liters of water, with a 10-hole briquette, the water boils within 23.54 minutes. When using 12 holes briquettes, the water boils in 21.31 minutes, and in the use of 14 holes briquettes, the water boils in 20.21 minutes. It is concluded that the shortest time to boil 5 liters of water is when using briquettes with 14 holes, which boils in 23.34 minutes. These results indicate that forced convection can speed up the briquette burning process and produce a fairly high temperature.

Challenge for the Traceable Dimensional Measurement Using CMM in Factory Floor

Dimensional measurement is a key process in the quality assurance of manufacturing. Not only classical one-dimensional measurement devices, several kind of three-dimensional coordinate measuring systems (CMSs) including coordinate measuring machines (CMMs) are used for dimensional measurement tasks in measurement rooms or in factory floors. For the purpose of the quality guarantee, the measurement for the validation on the products should be performed with the traceable manner. In the case of the dimensional measurement, the measurement results of the products should be stated as the corresponding values in the reference temperature, 20 °C. Therefore, at least the traceability of the length indication instruments and temperature-measuring equipment installed into the measuring device to be used should be ensured. Usually, the traceability of the instrument or equipment is ensured through the calibration on it. Now, typical CMMs in factory floor have non-calibrated temperature-measuring equipment because the equipment is hard to be detached off for the calibration, and therefore, the temperature-measuring equipment is usually left uncalibrated. Recently, a new procedure by which both the length indication instruments and temperature-measuring equipment installed into a CMM are able to be calibrated simultaneously is established. In this research, the traceable dimensional measurement using a CMM equipped with uncalibrated temperature-measuring instrument is developed by as an application of the established calibration procedure. Through the experiment, the traceable dimensional measurement using the CMM placed on the factory floor is demonstrated.

RANCANG BANGUN ALAT UKUR SUHU BAWAH PERMUKAAN BUMI MENGGUNAKAN IC SENSOR LM35 UNTUK PENGUKURAN SECARA MAPPING

RANCANG BANGUN ALAT UKUR SUHU BAWAH PERMUKAAN BUMI MENGGUNAKAN IC SENSOR LM35 UNTUK PENGUKURAN SECARA MAPPING ABSTRAK Telah dilakukan penelitian untuk mengembangkan alat ukur suhu bawah permukaan bumi secara mapping dengan menggunakan IC Sensor LM35DZ. Akuisisi data alat ukur bawah permukaan menggunakan sistem akuisisi data mikrokontroler AVR ATmega8 dalam unit slave yang sebelumnya telah dibuat dan diuji. Pengembangan dilakukan dengan menambah jumlah sensor menjadi 20 unit dan menghubungkan dengan sistem akuisisi data. Pengujian alat ukur suhu secara mapping dapat dilakukan dengan menyebar 20 sensor pada 20 titik berbeda. Hasil data yang telah direkam, dibuat menjadi peta suhu bawah permukaan melalui tampilan kontur mapping menggunakan program surfer. Hasilnya menunjukan bahwa alat ukur suhu bawah permukaan bumi memiliki kemampuan mendeteksi setiap perubahan suhu secara realtime pada 20 titik berbeda. Kata Kunci: Alat ukur suhu, IC Sensor LM35DZ, mapping. DESIGINING AND CONSTUCTION EARTH’S SUBSURFACE TEMPERATURE MEASURING INSTRUMENT USING LM35 IC SENSOR FOR MAPPING MANNER MEASUREMENT ABSTRACT A research has been done to develop earth’s subsurface temperature measuring instrument using LM35 IC sensor for mapping manner measurement. Data acquisition for the instrument used microcontroller AVR Atmega8 data acquisition system that the slave unit has been made and tested before. A development be done by added the sensor to be twenty units and connected it to acquisition data system. The testing for temperature measuring instrument in mapping manner could be done by spreading the twenty sensors to twenty different point. The data output that has been recorded, be made into earth’s subsurface temperature map through contour mapping display used surfer program. The output showed that the earth’s subsurface temperature measuring instrument could detect realtime temperature changing at twenty different point. Keywords : Temperature measuring intrument, LM35DZ, mapping