X'inhuma l-klassifikazzjonijiet tal-anemometri
L-anemometru tat-tazza li jdur ġie vvintat għall-ewwel darba minn Robinson fl-Ingilterra. Dak iż-żmien, kien hemm erba 'tazzi, u mbagħad intużaw tliet tazzi. It-tliet tazzi vojta paraboliċi jew emisferiċi mwaħħla fuq il-qafas huma kollha fuq naħa waħda, u l-qafas kollu flimkien mat-tazza tar-riħ huwa mmuntat fuq xaft li jista 'jdur liberament.
Klassifikazzjoni tal-anemometri
It was four cups, and later changed to three cups. The three parabolic or hemispherical empty cups fixed on the frame are all along one side, and the whole frame together with the wind cup is mounted on a shaft that can rotate freely. Cup anemometer It is the most common type of anemometer. The rotating cup anemometer was first invented by Robinson in England. At that time, there were four cups, and then three cups were used. The three parabolic or hemispherical empty cups fixed on the frame are all along one side, and the whole frame together with the wind cup is mounted on a shaft that can rotate freely. Under the action of wind force, the wind cup rotates around its axis, and its rotational speed is proportional to the wind speed. The speed can be recorded by electrical contacts, tachogenerators or photoelectric counters. Xi'an Chaoxi Electronic Technology Co., Ltd. supplies various types of anemometers such as digital anemometers, multi-functional anemometers, and intelligent pressure anemometers. Regional anemometer suppliers.
Huwa anemometru b'sett ta 'tliet jew erba' skrejjen xfafar li jduru madwar assi orizzontali. L-iskrun huwa mmuntat fuq quddiem ta 'weathervane sabiex il-pjan ta' rotazzjoni tiegħu jkun dejjem iħares lejn id-direzzjoni tar-riħ, u l-veloċità rotazzjonali tiegħu hija proporzjonali għall-veloċità tar-riħ. Anemometru Wajer tal-metall imsaħħan b'kurrent elettriku, u l-arja li tiċċirkola tagħmilha tinħela s-sħana. Bl-użu tar-relazzjoni lineari bejn ir-rata ta 'dissipazzjoni tas-sħana u l-għerq kwadrat tal-veloċità tar-riħ, u mbagħad linearizzaha permezz ta' ċirkwit elettroniku (għall-iskala u l-qari), jista 'jsir anemometru. Hemm żewġ tipi ta 'punteġġ tal-veloċità tar-riħ: tip ta' tisħin tal-ġenb u tip ta 'tisħin dirett. It-tip ta 'tisħin tal-ġenb huwa ġeneralment wajer tar-ram tal-manganiż, il-koeffiċjent tat-temperatura tar-reżistenza tiegħu huwa qrib iż-żero, u element li jkejjel it-temperatura huwa installat fuq il-wiċċ tiegħu.
It-tip ta 'tisħin dirett huwa l-aktar wajer tal-platinu, li jista' jkejjel direttament it-temperatura tiegħu stess waqt li jkejjel il-veloċità tar-riħ. L-anemometru għandu sensittività għolja f'veloċitajiet żgħar tar-riħ u huwa adattat għal kejl żgħir tal-veloċità tar-riħ. B'kostanti ta 'ħin ta' ftit mijiet biss ta 'sekonda, hija għodda importanti għat-turbulenza atmosferika u kejl agrometeoroloġiku.
Anemometru akustiku
The wind speed component in the sound wave propagation direction will increase (or decrease) the sound wave propagation speed, and the acoustic anemometer made by using this characteristic can be used to measure the wind speed component. Acoustic anemometers have at least two pairs of sensing elements, each pair consisting of a sounder and a receiver. Make the propagation directions of the sound waves of the two sound generators opposite. If one group of sound waves propagates along the wind speed component and the other group happens to travel against the wind, the time difference between the two receivers receiving the sound pulse will be proportional to the wind speed component. If two pairs of components are installed in the horizontal and vertical directions at the same time, the horizontal wind speed, wind direction and vertical wind speed can be calculated respectively. Because ultrasonic waves have the advantages of anti-interference and good directivity, the frequency of sound waves emitted by acoustic anemometers is mostly in the ultrasonic band.
