Browsing by Author "Alam, Mohammad Saiful"

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Design and Implementation of Intelligent Home Automation Service
(Daffodil International University, 2019-06-30) Ahmmed, Md. Mahfuz; Alam, Mohammad Saiful; Islam, Md. Arafat Ul
Home automation refers to the automatic and electronic control of household appliances, features and activities. The most important device of the present age is mobile phone. Using this device in controlling and surveillance work makes our life easy and comfortable. So, this project is done in such a way we can have the control of our home through a single device and some home appliance, which makes our life easier. The system is composed of hardware, communication and electronic interfaces that work to integrate electrical devices with one another. This project is aimed to modernize and develop to control all electronic devices in an apartment by command, provides safety by detecting fire, detects suspicious movement and also helps the owner with personal assistance. Moreover, it provides automated LDR lights, water level control and more. So this project serves as a basic structure of the AI (Artificial Intelligence) system. The programming is done in windows operating system. Sensors and serial communicating devices are incorporated and synchronized with the personal computer.
Smart Indoor Air Pollution Caution System
(Daffodil International University, 2019-02-24) Ahmed, Kawsar; Rayhan, Abu; Alam, Mohammad Saiful
Air pollution is not well known by people also they do not know about utile steps .As of late, peoples are suffering much from air pollution .They feel discomfort such as fatigue, headaches and more serious reactions. People breathing in air of poor quality could suffer from difficulty in breathing, wheezing and asthma. In addition to the human health, air pollution also has a major effect on the global environment and the worldwide economy. Scientific evidence has indicated that the air within homes and other buildings can be more seriously polluted than the outdoor air. Other research indicates that people spend approximately 90 percent of their time indoors. To avoid this problem, we are going to implement the project “Smart indoor air pollution caution system” for ensuring hygienic situation and making people conscious. Sensor system will detect volatile components (like Co2, benzene, alcohol, smoke etc.) of indoor air. Air quality information will be shown in live data streaming by using android application, included utile steps feature in apps for people’s consciousness. People will get their indoor air quality info from anywhere. To reduce volatile organic compounds from indoor, we used window automation in this smart system which will reduce polluted air. If indoor air quality is bad then window will open automatically until get the good air quality.
Synthesis, structural investigation, dielectric and magnetic properties of Zn2+2+-doped cobalt ferrite by the sol–gel technique
(World Scientific, 2018-08-31) Hossain, Mohammad Sajjad; Alam, Md. Badiul; Shahjahan, Mohammad; Begum, Most. Hosney Ara; Hossain, Md. Moazzem; Islam, Suravi; Khatun, Nazia; Hossain, Mukul; Alam, Mohammad Saiful; Al-Mamun, Md.
Zinc substituted cobalt ferrite nanoparticles with elemental composition Co1−x1−xZnxFe2O4 (x=0.0x=0.0, 0.2, 0.4, 0.6) were prepared by the sol-gel auto-combustion technique using Co, Fe, Zn nitrate as a precursor where nitrates to citrate was 1:3. The as prepared powder of cobalt zinc ferrite was sintered at 900∘C for 3h. Structural, morphological, dielectric and magnetic properties were studied by x-ray diffractometer (XRD), scanning electron microscope (SEM), high precision impedance analyzer and vibrating sample magnetometer (VSM), respectively. The peaks obtained from the XRD confirmed samples having crystallite (∼∼32–36nm) single phase inverse spinel structure without any traceable impurity. Lattice parameters were calculated from XRD and it increases with Zn content. SEM revealed irregularly shaped grains (∼0.5∼0.5–0.7μμm) morphology with heterogeneous distribution. The dielectric constant (ε′ε′) and dielectric loss (tanδtanδ), have been measured as a function of frequency at room temperature. The dependence of ε′ε′ and tanδtanδ with frequency showed the normal dielectric behavior in accordance with the Maxwell-Wagner type of interfacial polarization and electron hopping change between Co2+2+ and Co3+3+ as well as between Fe2+2+ and Fe3+3+ ions at octahedral sites.