LoRaWAN Transmission System Capability Assessment in Industrial Environment Under Temperature and Humidity Characterization

Author(s):  
Gabriele di Renzone ◽  
Ada Fort ◽  
Marco Mugnaini ◽  
Giacomo Peruzzi ◽  
Alessandro Pozzebon ◽  
...  
2012 ◽  
Vol 241-244 ◽  
pp. 2524-2527
Author(s):  
Yi Lv

According to the features and needs of collecting the data of temperature and humidity of current industrial environment, and the multi-places and multi-sensors data fusion as well, this paper proposes a fuzzy logic-based approach for the multi-places and multi-sensors data fusion. Firstly, this paper introduces the hardware construction of monitor system of temperature and humidity. Then, based on fuzzy set theory, the paper describes the model of fuzzy synthetic evaluation, and then proposes a novel algorithm for choosing the weights assignment proposals. Finally, a multi-places and multi-sensors data fusion approach, which is based on fuzzy synthetic evaluation, is presented. An example is also used for demonstrating the proposed approach. The results of system implementation identify that the approach can remove the influence of incorrect data on evaluating the temperature and humidity of current environment, and the data fusion result is objective and correct as well.


Repositor ◽  
2020 ◽  
Vol 2 (12) ◽  
pp. 1716
Author(s):  
Ahmad Fahri Jamaluddin ◽  
Diah Risqiwati ◽  
Fauzi Dwi Setiawan Sumadi

AbstrakMemelihara burung merupakan salah satu hobi masyarakat Indonesia. Kebutuhan gizi dan nutrisi berupa protein pada burung dapat diperoleh dari suatu makanan salah satu makanan burung kroto atau telur semut rangrang. Pada budidaya semut rangrang, suhu dan kelembaban dapat mempengaruhi semut rangrang dalam bertelur. Masalah yang dihadapi saat ini pada budidaya semut rangrang adalah peternak tidak dapat memperkirakan kondisi suhu dan kelembaban. Mereka hanya memperkirakan suhu dan kelembaban dengan merasakan panas di dalam ruangan. Adapun masalah lain yang dihadapi adalah adanya getaran dan bau kimia di sekitar toples tempat semut rangrang di budidaya yang dapat membuat semut stress dan dapat menurunkan hasil produksi kroto. Dari permasalahan ini dilakukan penelitian dengan membuatan model pengatur suhu, kelembaban, getaran dan bau kimia dapat dimanfaatkan untuk menggunakan mikrokontroler Arduino UNO, sensor DHT11, sensor SW-420 dan sensor MQ-02 pada ruang budidaya semut rangrang dengan menggunakan system pentransmisian MQTT (Message Queuing Telemetry Transport). Alat ini akan mempermudah budidaya untuk mengatur nilai suhu, kelembaban, getaran dan bau kimia di dalam ruang budidaya tersebut. Alat ini menggunakan mist maker sebagai alat penghasil uap dan buzzer sebagai alarm secara otomatis agar budidaya semut rangrang stabil dan menghasilkan produksi kroto yang berkualitas. Hasil penelitian ini menunjukkan bahwa jarak mempengaruhi kuat sinyal dan delay atau selisih waktu transmisi data yang mana pada jarak 5m sampai jarak 7m sinyal semakin melemah dan rata-rata selisih waktu transmisi data betambah sekitar 5.1 sec hingga 5.9 sec. Hasil penelitian ini juga menunjukkan bahwa sistem pentrasmisian MQTT yang menggunakan ESP8266 memiliki rata-rata jumlah packet loss secara keseluruhan sebesar 35%.AbstractCaring of birds is one of society hobbies in Indonesia. Nutritional needs and nutrients in the form of proteins in birds can be obtained from food which is kroto bird food or weaver ant egg. In the weaver ant cultivation, temperature and humidity can affect the weaver ant in laying eggs. The problem of weaver ants cultivation is the farmer cannot predict the conditions of temperature and humidity. They only estimate the temperature and humidity by feeling heat in the room. The other problem faced is the presence of vibration and chemical odors around the jar where the weaver ants process of cultivation can make they stress and reduce the production of kroto. From this problem, research is carried out by making a models of temperature, humidity, vibration and chemical odors can be ultilized by using arduino uno microcontroller, DHT11 sensor, SW-420 sensor and MQ-02 sensor in the space of weaver ants cultivation by using the MQTT (Message Queuing Telemetry Transport) transmission system. This tool will make the cultivation easier to regulate the value of temperature, humidity, vibration and chemical odors in the space of cultivation. This tool uses a mist maker as steam generator and buzzer as an automatic alarm so that the cultivation of the weaver ants is stable and produces quality of kroto production. The results of this study indicate that the distance affects the signal strength and delay or difference in data transmission time which at a distance of 5m to a distance of 7m the signal weakens and the average difference in data transmission time increases around 5.1 sec to 5.9 sec. The results of this study also indicate that the MQTT transmission system that uses ESP8266 has an average number of packet loss overall of 35%. 


Author(s):  
Yeshayahu Talmon

To achieve complete microstructural characterization of self-aggregating systems, one needs direct images in addition to quantitative information from non-imaging, e.g., scattering or Theological measurements, techniques. Cryo-TEM enables us to image fluid microstructures at better than one nanometer resolution, with minimal specimen preparation artifacts. Direct images are used to determine the “building blocks” of the fluid microstructure; these are used to build reliable physical models with which quantitative information from techniques such as small-angle x-ray or neutron scattering can be analyzed.To prepare vitrified specimens of microstructured fluids, we have developed the Controlled Environment Vitrification System (CEVS), that enables us to prepare samples under controlled temperature and humidity conditions, thus minimizing microstructural rearrangement due to volatile evaporation or temperature changes. The CEVS may be used to trigger on-the-grid processes to induce formation of new phases, or to study intermediate, transient structures during change of phase (“time-resolved cryo-TEM”). Recently we have developed a new CEVS, where temperature and humidity are controlled by continuous flow of a mixture of humidified and dry air streams.


Sign in / Sign up

Export Citation Format

Share Document