scholarly journals Design of Prototype System for Temperature and Humidity Control in Flour Storage

2017 ◽  
Vol 5 (2) ◽  
pp. 59-64
Author(s):  
Annisau Saidah
Keyword(s):  
Wheat Flour ◽  
Load Cell ◽  
Sensor Data ◽  
Prototype System ◽  
Mold Growth ◽  
Test Results ◽  
Linear Formula ◽  
Temperature And Humidity ◽  
Cell Test ◽  
First In First Out

Storage of wheat flour requires good temperature and humidity to avoid mold growth that can damage the nutrients in wheat flour. The temperatures and humidity required for proper storage are above temperatures and humidity below 60% RH. The method used in flour storage is FIFO (First In First Out) using a Load cell sensor as a marker for flour input. The incoming flour will input the time, location and amount of flour, so that it can be easily determined which flour will come out first. To facilitate monitoring of temperature, humidity and stock amount in flour storage in this study, sending monitoring data wirelessly using an internet network that can be accessed anywhere. The test results of this study show that the DHT22 sensor can measure temperature and humidity well, which has a RE (Relative Error) value of 0.5% temperature and 3.9% humidity compared to the HTC-1 measuring instrument. The load cell test compared to digital scales has an accurate value using a linear formula. In the QoS test, sending sensor data to the web server has a good value according to the ITU-T standard, namely delay <150ms

scholarly journals The Infusion of Notification Design With an Application of Social Media Based on a Internet of Things (IOT)

SinkrOn ◽  
2020 ◽  
Vol 5 (1) ◽  
pp. 129
Author(s):  
Rudi Arif Candra ◽  
Devi Satria Saputra ◽  
Dirja Nur Ilham ◽  
Herry Setiawan ◽  
Hardisal Hardisal
Keyword(s):  
Internet Of Things ◽  
Network Connectivity ◽  
Load Cell ◽  
Sensor Data ◽  
The Internet ◽  
Hospital Nurses ◽  
Test Results ◽  
Iot Platform ◽  
The Internet Of Things ◽  
Internet Network

This study discusses the infusion detection device in a hospital room. This tool is designed to help hospital nurses to cope more quickly to avoid problems due to the infusion. Load cell sensors are used as heavy detectors that send notifications to the nurses through the telegram application that has been installed. The nurse will get a notification message sent to the telegram if the sensor has read the weight. The tool is made using a load cell sensor and NodeMCU Wi-FiESP866 which functions to send notification of the results of sensor data input to the Internet of Things (IOT) platform namely Telegram. Nurses need to be connected to the internet network to get notifications on the telegram. Test results show that the time needed to send and receive notifications on Telegram takes about 2-5 seconds. The message will be sent 3 times, first the infusion WARNING is almost exhausted (alert), second the infusion WARNING is almost exhausted (standby) and the infusion WARNING is almost exhausted (please replace). If the infusion is not replaced by the nurse, it will be warned by Buzzer. However, time can be influenced by the available internet network connectivity. However, time can be affected by the available internet network.

scholarly journals Implementasi Pemantauan Suhu Kelembaban serta Pengendali Penyiraman Tanaman secara Otomatis pada Greenhouse Berbasis Web

Repositor ◽  
2020 ◽  
Vol 2 (4) ◽  
pp. 403
Author(s):  
Lalu Rahmat Hidayat ◽  
Zamah Sari ◽  
Fatimah Nursandi
Keyword(s):  
Leaf Shape ◽  
Web Server ◽  
Sensor Data ◽  
Test Results ◽  
Water Pump ◽  
Average Temperature ◽  
Temperature And Humidity ◽  
Wall Zone ◽  
Arduino Uno ◽  
The Web

AbstrakAglaonema merupakan tanaman hias daun yang memiliki nilai keindahan pada variasi daun, baik motif warna maupun bentuk daun. Aglaonema tumbuh pada suhu 24-270C dan kelembaban 65-75%, serta tidak terkena sinar matahari langsung. Untuk mendapatkan kondisi ideal maka aglaonema ditempatkan didalam sebuah greenhouse. Sehingga dirancanglah sebuah sistem yang dapat memantau suhu, kelembaban serta pengendalian penyiraman tanaman secara otomatis pada greenhouse. Adapun alat yang digunakan untuk merancang sistem ini adalah sensor DHT22, mikrokontroller Arduino uno, relay, selenoid valve, ethernet shield dan pompa air. Sensor ditempatkan pada 3 loakasi di dalam greenhouse yakni zona atap, zona dinding dan zona tanaman. Pemantauan dilakukan melalui web server dalam bentuk tabel dan grafik. Hasil pengujian didapatkan bahwa sistem ini dapat bekerja dengan baik. Dht22 dapat membaca suhu dan kelembaban dengan margin error dari pengukuran ini yakni suhu 0,410C dan kelembaban 2,56%. Pompa air bekerja dengan batasan yang telah ditentukan, ketika melebihi batas maka relay menyala dan pompa air bekerja. Hal ini sudah sesuai dengan yang diharapkan. Pengiriman data hasil sensor ke server dapat membaca dengan benar, hasil pengujian nilai sensor pada serial monitor dan di web server memiliki nilai yang sama, meskipun teradi delay. Web server dapat menampilkan data suhu dalam bentuk grafik dan tabel. Suhu dan kelembaban ideal berhasil berhasil dilakukan. Rata-rata suhu dan kelembaban ruangan sebelum menggunakan sistem yakni 30.20C dan 56,86%. Sedangkan rata-rata suhu dan kelembaban ruangan setelah menggunakan sistem yakni 27.850C dan 73,99%. Hal ini menunjukkan bahwa terjadi penurunan rata-rata suhu sebesar 2.350C dan kenaikan kelembaban sebesar 17.13%.AbstractAglaonema is a leaf ornamental plant that has a beauty value on the variation of leaves, both color and leaf shape motif. Aglaonema grows at 24-270C and humidity 65-75%, and it’s not exposed to direct sunlight. To get ideal conditions aglaonema placed in a greenhouse. So designed a system that can monitor the temperature, humidity and control of plant watering automatically on the greenhouse. The tools used to design this system are DHT22 sensor, arduino uno microcontroller, relay, selenoid valve, ethernet shield and water pump. The sensors are placed in 3 loacations within the greenhouse in the roof zone, the wall zone and the plant zone. Monitoring is done through a web server in the form of tables and graphs. Test results found that this system can work well. Dht22 can read the temperature and humidity with the error margin of this measurement ie temperature of 0.410C and humidity 2,56%. The water pump works with a predetermined limit, when it exceeds the limit the relay lights up and the water pump works. This is as expected. Delivery of the sensor data to the server can read correctly, the test results of sensor values on the serial monitor and on the web server have the same value, although delay occurs. The web server can display temperature data in the form of graphs and tables. Ideal temperature and humidity successfully performed. Average temperature and humidity of the room before using the system that is 30.20C and 56.86%. While the average temperature and humidity of the room after using the system that is 27.850C and 73.99%. This shows that there is a decrease in the average temperature of 2.350C and humidity increase of 17.13%.

Influence of changing environment conditions on the development of shrinkage strain and the expansion coefficient of large concrete specimens

2019 ◽  
Author(s):  
Dominik Suza ◽  
Johann Kollegger ◽  
Harald S. Müller
Keyword(s):  
Shrinkage Strain ◽  
Theoretical Models ◽  
Test Results ◽  
Current Standard ◽  
Operating Life ◽  
Changing Environment ◽  
Temperature And Humidity ◽  
Bridge Structures ◽  
Standard Models ◽  
Creep And Shrinkage

<p>The standard creep and shrinkage strain measurements of concrete are usually conducted in a laboratory with constant temperature and humidity with a low variation. The creep and shrinkage measurements are conducted over a few months with the expectation that small concrete specimens can sufficiently describe the evolution of the rheology effects on a large multi-span bridge in the course of its operating life.</p><p>The monitoring of real bridge structures shows the actual progression of the deflections and concrete strains. Unfortunately the evaluation and interpretation of the measured values is complicated. The idea of the scientific Creep &amp; Shrinkage project was to combine the two described situations (laboratory experiments and monitoring of real bridge structures) creating an experimental setup which would benefit from the advantages of both approaches.</p><p>In order to achieve conformity of the measured test results with those of theoretical models (MC 2010, EC) it was necessary to upgrade the current models to include the effects of changing temperature and humidity. Within this paper the upgrade of the current standard models to include changing environment conditions will be elaborated, in addition to an explanation of the method used to separate shrinkage strains from the temperature strains from the measured data. The measured concrete expansion coefficients will also be discussed.</p>

Design and Analysis of a High Power Density, Low Temperature Waste Heat Recovery System Using an Oil-Free Turboalternator

2010 ◽  
Author(s):  
James F. Walton ◽  
Andrew Hunsberger ◽  
Hooshang Heshmat
Keyword(s):  
Output Power ◽  
Waste Heat ◽  
Maximum Output Power ◽  
Output Power Level ◽  
Working Fluid ◽  
Prototype System ◽  
Low Grade ◽  
Maximum Output ◽  
Test Results ◽  
Study Results

In this paper the authors will present the design and preliminary test results for a distributed electric generating system that uses renewable energy source for economical load-following and peak-shaving capability in an oil-free, high-speed micro-turboalternator system using compliant foil bearings and a permanent magnet alternator. Test results achieved with the prototype system operating to full speed and under power generating mode will be presented. A comparison between predicted and measured electrical output will also be presented up to a power generating level of 25 kWe at approximately 55,000 rpm. The excellent correlation between design and test provides the basis for scale up to larger power levels. Based upon the turboalternator test results a thermodynamic cycle analysis of a system using low grade waste heat water at approximately 100 C will be reviewed. The tradeoff study results for a series of environmentally friendly refrigerant working fluids will also be presented including sensitivity to vaporization and condensing temperatures. Based on the cycle and pinch point analyses predicted maximum output power was determined. Finally a preliminary turbine design for the selected R134a working fluid was completed. The results of this study show that a net output power level of greater than 40 kW is possible for approximately 240 l/m flow of water at 100C is possible.

scholarly journals IoT system terpadu untuk pengelolaan sarang lebah

JURNAL ELTEK ◽  
2021 ◽  
Vol 19 (1) ◽  
pp. 9
Author(s):  
Vivien Arief Wardhany ◽  
Vivien Arief Wardhany ◽  
Alfin Hidayat
Keyword(s):  
Honey Bees ◽  
Nutritional Value ◽  
Social Insect ◽  
Human Life ◽  
Web Server ◽  
Load Cell ◽  
Integrated System ◽  
Graphical Form ◽  
Test Results ◽  
Android Application

Lebah madu adalah jenis serangga social yang hidup berkoloni. Lebah memiliki manfaat bagi kehidupan manusia yaitu dalam proses penyerbukan tanaman serta menghasilkan madu yang dapat dikonsumsi karena memilki nilai gizi yang tinggi. Pada sistem peternakan lebah modern ada beberapa hal yang perlu diperhatikan yaitu iklim, lokasi sarang lebah dengan ketersediaan tanaman (bunga) yang menjadi sumber makan bagi lebah dan material sarang lebah. Pada penelitian ini telah dibuat suatu sistem terpadu yang terdiri dari 3 bagian penyusun sistem yaitu hardware yang terdiri dari sensor suhu, kelembaban, load cell dan geo lokasi (penentu lokasi) berikutnya adalah software yang terdiri dari Web Server dan aplikasi Android yang berisi data hasil pembacaan sensor yang disajikan dalam bentuk grafik sehingga memudahkan pembacaan hasil monitoring dari hardware, serta notifikasi apabila tiba saat pemanenan sarang atau kondisi suhu dan kelembaban yang tidak sesuai dengan standar tidak terpenuhi. Hasil pengujian sistem ini didapatkan bahwa Suhu optimal pada kandang lebah dapat dipertahankan dengan aktuator. Aktuator dapat mepertahankan suhu dari 34,4 ℃ ke 32,9℃ selama 1 menit 5 detik dan dari 31,2 ℃ ke 32,2 ℃ selama 1 menit 15 detik. Aplikasi web dan android ini mempermudah para peternak lebah untuk mengelola kondisi sarang lebah dari hasil pengujian untuk monitoring kondisi sarang lebah dapat berjalan dengan baik, dimana data yang ditampilkan adalah suhu, kelembaban dan berat. Honey bees are a type of social insect that live in colonies. Bees have benefits for human life, namely in the process of pollinating plants and producing honey that can be consumed because of their high nutritional value. In the modern beekeeping sistem, there are several things that need to be considered, namely the climate, the location of the beehive and the availability of plants (flowers) which are a source of food for bees and beehive materials. In this research, an integrated system consisting of 3 parts of the system has been created, namely Hardware consisting of temperature, humidity, load cell and geo location sensors. Next is the software consisting of a Web Server and an Android application that contains reading data. sensors are presented in graphical form to facilitate reading of monitoring results from Hardware, as well as notifications when nest harvesting arrives or temperature and humidity conditions that do not comply with standards are not met. The test results of this system show that the optimal temperature in the beehive can be maintained with an actuator. The actuator can maintain temperature from 34.4 ℃ to 32.9 ℃ for 1 minute 5 seconds and from 31.2 ℃ to 32.2 ℃ for 1 minute 15 seconds. This Web and Android application makes it easier for beekeepers to manage the conditions of the beehive. From the test results for monitoring the conditions of the beehive, it can run well, where the data displayed is temperature, humidity and weight.  

Development and Test of a Fuel Cell Based Micro-CHP System

2015 ◽  
Vol 1092-1093 ◽  
pp. 175-180
Author(s):  
Dong Lai Xie ◽  
Bing Qi Wang
Keyword(s):  
Fuel Cell ◽  
Natural Gas ◽  
Waste Heat ◽  
Thermal Power ◽  
Clean Energy ◽  
Prototype System ◽  
Test Results ◽  
Conversion Unit ◽  
Chp System ◽  
Auxiliary Unit

Fuel cell based micro combined heat and power (micro-CHP) systems are residential scale clean energy conversion unit. It employs fuel cells in a compact system that converts natural gas, propane or other fuels into both electricity and heat, which increases efficiency by simultaneously generating power and heat for one unit, on-site within a home. A prototype system consisting of a natural gas steam reforming unit, CO cleaning unit, PEM fuel cell stack, waste heat recovery unit and auxiliary unit is integrated. Test results of the prototype show that it can start within an hour and the syngas produced can meet the fuel cell’s requirements. The prototype’s electric power and thermal power are 200W and 530W respectively, while the electric and thermal efficiency are 15.4% and 40.9% respectively.

The Use of Auxiliary Airborne Sensor Data in SPACE-M Photogrammetric Block Adjustments

1984 ◽  
Vol 38 (1) ◽  
pp. 3-14
Author(s):  
J. A. R. Blais ◽  
M. A. Chapman
Keyword(s):  
Global Positioning System ◽  
Mathematical Formulation ◽  
Real Data ◽  
Sensor Data ◽  
Navigation Systems ◽  
Test Results ◽  
Inertial Navigation Systems ◽  
Adjustment Program ◽  
Global Positioning ◽  
Topographical Mapping

The mathematical formulation used in the photogrammetric block adjustment program SPACE-M has recently been extended to accommodate auxiliary airborne sensor data corresponding to the position and/or attitude of the aerial camera at the time of film exposure. Examples of such systems are statoscopes, laser profilometers, Inertial Navigation Systems (INS) and the Global Positioning System (GPS). The description of the use of these auxiliary data in SPACE-M is outlined and references are given to other related formulations. Test results with simulated and limited real data are presented with some analysis of the implications for topographical mapping and other applications.

scholarly journals Numerical Study on Humidification Performance of Fuel Cell Test Platform Humidifier

Energies ◽  
2019 ◽  
Vol 12 (20) ◽  
pp. 3839 ◽  
Author(s):  
Tiancai Ma ◽  
Kai Wang ◽  
Qiongqiong Zhou ◽  
Weikang Lin ◽  
Ming Cong ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Water Temperature ◽  
Numerical Study ◽  
Proton Exchange ◽  
Operating Conditions ◽  
Air Velocity ◽  
Humidity Control ◽  
Test Platform ◽  
Temperature And Humidity ◽  
Cell Test

Temperature and humidity are important parameters in the operation of proton exchange membrane fuel cell (PEMFC), which have an important impact on the performance of fuel cell. Fuel cell test platform is an important tool to study the performance of fuel cells, and its temperature and humidity control module is also the key in the research process of the test platform, so that it can provide the gas with precise temperature and humidity control during the test process of the fuel cell. In this paper, a humidifier combined with bubbling and spraying is adopted for the application of test platform, and the numerical simulation model of the humidifier is established. According to the model, the influence of operating conditions of humidifier on humidification performance is verified, such as inlet air velocity and the humidifying water temperature. The results indicate that the inlet air velocity and the humidifying water temperature have great influence on the humidifying performance of the humidifier. The humidifying performance decreases with the increase of the inlet air velocity and increases with the increase of the humidifying water temperature respectively. In addition, the humidification performance of the humidifier is verified.

Sign in / Sign up

Export Citation Format

Share Document