dc.contributor.author |
Hafizur Rahman, Md. |
|
dc.date.accessioned |
2020-11-09T10:18:22Z |
|
dc.date.available |
2020-11-09T10:18:22Z |
|
dc.date.issued |
2019-05-05 |
|
dc.identifier.uri |
http://dspace.daffodilvarsity.edu.bd:8080/handle/123456789/4994 |
|
dc.description |
All through the latest of the years, there has been a growing example in sustenance age. As
demonstrated by a starter check of BBS, in FY2016-17, sustenance grains age stayed at around
388.14 lakh metric tons (MT). In order to scale up gainfulness, assignment in cultivating
wellsprings of data was extended, similarly as overhauled incorporation and extended
availability of rustic credit were ensured. Regardless, If Take genuine protection, reliably a bat
puts in 600-700 kilometers of communicating arrangement. Flying low, the animals get bugs
at paces of around 40 meters for each second. Around night time the bat uses its hearing to
investigate its way to deal with prey. Bats catch bugs always using echolocation, an impelled
course system. The bat releases ultrasonic waves with high frequencies. Its calls are pitched at
20-100 kilohertz, a repeat that is unreasonably sharp for individuals to hear ordinarily. Their
sounds are reflected in the earth, hitting various articles and returning to the bat as echoes. The
resonation sign enables the bat to outline a mental guide of its condition. Sound is incited
through a medium as the particles are vibrated making weight waves with districts of weight
and rarefaction. The waves have trademark features of wavelength, repeat, and plentiful.
Wavelength (λ) is the detachment between two zones of maximal weight (or rarefaction). The
hugeness of wavelength is that the invasion of the ultrasound wave is with respect to
wavelength and picture objectives are near 1-2 wavelengths. Repeat (f) is the number of
wavelengths that enjoy a reprieve. It is assessed as cycles (or wavelengths) consistently and the
unit is hertz (Hz). It is a specific segment of the valuable stone used in the ultrasound
transducer. It might be moved by the manager inside set purposes of repression – the higher
the repeat, the better the objectives yet the lower the penetration. The degree of weight change
is given by the plentiful. It is conveyed in decibels on a logarithmic scale. |
en_US |
dc.description.abstract |
Ultrasonic bat Banisher disposes of bats by radiating persevering ultrasonic sound waves. Bat control
is best tended to with a physical hindrance or an ultrasonic Bat Banisher. Bats chase after dim and perch
during the day. Their vision isn't exceptionally intense and they explore utilizing echolocation. Thus,
ultrasonic bat Banisher gadgets are the most straightforward and viable approach to dispose of bats.
Bats convey high-recurrence commotions that, by methods for a reverberation, are come back to the
bat's ears, telling them the separation, course, and size of the space or object(s) before them. This is
called echolocation. It is the motivation behind why bats are incredibly delicate to sounds in this
recurrence go. Ultrasonic bat Banisher gadgets help control bats by transmitting sound waves that
meddle with echolocation, making the influenced region unwelcoming to bats. Ultrasonic sound waves
are characteristic bat hindrances and don't cause hurt. The bat province will look for another perch in
unprotected structures or normal regions. We are the main providers, exporters, and makers of top
quality, superior Ultrasonic Bat Banisher. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Daffodil International University |
en_US |
dc.subject |
Technology |
en_US |
dc.subject |
Waves |
en_US |
dc.title |
An Approach to Create a High Frequency Ultrasound System to Protect Agricultural Field From Bats |
en_US |
dc.type |
Other |
en_US |