scholarly journals PERANCANGAN ALAT SISTEM PENGONTROLAN SUHU DAN KELEMBAPAN RUANG BUDIDAYA ULAT SUTERA BERBASIS WIRELESS

2019 ◽  
Vol 1 (2) ◽  
pp. 28-39
Author(s):  
Umar Katu ◽  
Rosmilawaty Rosmilawaty ◽  
Anri Iswanto

Budidaya ulat sutra merupakan salah satu usaha budidaya yang sering di jumpai di beberapa sentra produksi kain sutera. Ulat sutera (Bombyx mori L.) merupakan salah satu jenis serangga yang mempunyai nilai ekonomis tinggi bagi manusia. Serangga tersebut adalah produsen serat sutera yang merupakan bahan baku sutera dibidang pertekstilan, benang bedah, dan parasut dengan kulitas tinggi, belum bisa dikalahkan oleh serat sutera buatan. Siklus Hidup ulat sutera dapat tumbuh optimal pada suhu lingkungan 23-28 ºC dan kelembaban 80-90% RH. Apabila dipelihara dalam lingkungan bersuhu lebih panas maka produktivitas akan menurun karena ulat sutera adalah hewan berdarah dingin (poikilotherm). Berdasarkan hal tersebut, tugas akhir ini bertujuan untuk mengoptimalkan produktivitas ulat sutera dengan merancang sebuah sistem pengontrolan berbasis wireless yang dapat mengontrol suhu dan kelembaban ruang budidaya ulat sutera sesuai dengan kebutuhan yaitu 23-28 ºC dan kelembaban 80-90%. System pengontrol suhu dan kelembaban dengan mnggunakan Radio Frequency module (RF module) yang akan ditampilkan pada monitor berupa Personal Computer (PC). Jika suhu tidak sesuai berdasarkan pembacaan sensor dengan range yaitu 23-28ºC, kipas angin akan aktif dan apabila kelembaban tidak sesuai berdasarkan pembacaan sensor dengan range yaitu 80-90 % RH, sprayer akan aktif.

2020 ◽  
Vol 105 (3) ◽  
Author(s):  
Ying Xiao ◽  
Lei‐lei Li ◽  
Asma Bibi ◽  
Ning Zhang ◽  
Ting Chen ◽  
...  

2020 ◽  
Vol 11 (1) ◽  
pp. 298
Author(s):  
Youchung Chung

In this paper, an inverted F type antenna (IFA) for ZigBee communication of a sensor board has been designed and optimized, and it replaces the chip antenna on an RF (Radio Frequency) module that is not performing well enough for the ZigBee communication. The sensor board detects cattle behavior and identifies the breeding (estrus) period and transmits the data to the main station by the RF (Radio Frequency) module and IFA antenna. The proposed and optimized TRx (transmitting/receiving) IFA antenna of the ZigBee communication module has a return loss of −19 dB and a gain of 1.6 dB at 2.45 GHz. The size is about 2.5 × 0.5 cm in width and vertical length, and the height is 0.55 cm. The strength of signals with the chip antenna and the IFA antenna have been measured and compared. There is about a 20 dB enhancement with the IFA antenna compared to the chip antenna. The antenna is designed and applied to the RF transmission and reception (TRx) module. This antenna and sensor module can be applied to livestock in general as well as cattle.


2004 ◽  
Vol 64 (2) ◽  
pp. 237-242 ◽  
Author(s):  
M. C. Lacerda ◽  
A. M. R. M. Ferreira ◽  
T. V. Zanuncio ◽  
J. C. Zanuncio ◽  
A. S. Bernardino ◽  
...  

Biological control has been reducing the use of chemical products against insect pests, specially predatory Pentatomidae. Species of this group can present high variations in their life cycle as a result of their diet. Thus, the objective of this research was to study nymph development and reproduction of Podisus distinctus (Stäl, 1860) (Heteroptera: Pentatomidae) fed on Bombyx mori L., 1758 (Lepidoptera: Bombycidae) larvae (T1), compared to those fed on Tenebrio molitor L., 1758 (Coleoptera: Tenebrionidae) (T2) and Musca domestica L., 1758 (Diptera: Muscidae) larvae (T3) at a temperature of 25 ± 0.5ºC, relative humidity of 70 ± 2%, and photophase of 12 h. Predators fed on B. mori showed duration of the nymph phase (18.68 ± 1.02) similar to those fed on T. molitor (18.32 ± 1.49). Pre-oviposition and oviposition periods and number of egg masses, besides eggs and nymphs per female, were higher with B. mori (5.83 ± 2.02; 15.00 ± 7.40; 8.42 ± 1.84; 296.69 ± 154.75; and 228.55 ± 141.04, respectively) while longevity of males and females of P. distinctus was 25.76 ± 16.15 and 35.00 ± 16.15 days with T. molitor, and 20.57 ± 13.60 and 23.46 ± 12.35 days with B. mori, respectively.


2011 ◽  
Vol 106 (3) ◽  
pp. 386-393 ◽  
Author(s):  
Silvia Cappellozza ◽  
Alessio Saviane ◽  
Gianluca Tettamanti ◽  
Marta Squadrin ◽  
Elena Vendramin ◽  
...  

1964 ◽  
Vol 10 (2) ◽  
pp. 225-238 ◽  
Author(s):  
Toshio Ito ◽  
Kenya Kawashima ◽  
Motoko Nakahara ◽  
Koji Nakanishi ◽  
Akira Terahara

Author(s):  
Giselle Zambrano‐Gonzalez ◽  
Martha I. Almanza‐Pinzon ◽  
Mauricio Vélez‐T

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