Tema: Automobili
View Single Post
Staro 28.09.2023., 14:04   #69630
calypso
Premium
Moj komp
 
calypso's Avatar
 
Datum registracije: Oct 2002
Lokacija: Zagreb/Rijeka
Postovi: 1,944
Citiraj:
Autor Visage Pregled postova
Namjerno ili slucajno, dodirnuo si ono sto je MIT govorio prije manje od desetak godina - Vrijeme Izlaganja!

In electric vehicles, passengers sit very close to an electric system of significant power, usually for a considerable amount of time. The relatively high currents achieved in these systems and the short distances between the power devices and the passengers mean that the latter could be exposed to relevant magnetic fields. This implies that it becomes necessary to evaluate the electromagnetic environment in the interior of these vehicles before releasing them in the market. Moreover, the hazards of magnetic field exposure must be taken into account when designing electric vehicles and their components.

Considering the chronic nature of exposure to EMF in EVs (in particular with respect to potential exposure to drivers when various EMF sources are located near their cabins), and the potential specific risks from exposure to EMF of complex composition in time and frequency domains, there is a need to collect research data on the complex characteristics of EMF exposure related to the use of EVs in public transportation and the associated health outcome in chronically exposed workers, as well as decreasing the level of their exposure by applying relevant preventive measures (e.g., locating indoor Wi-Fi routers, and other such electrical equipment, away from the driver’s cabin)
Sad si mi dao razmisljat... Ima nesto u tome o cemu pricas, naime pala mi magnetohidrodinamika na pamet...

https://en.wikipedia.org/wiki/Magnetohydrodynamics

U principu, snazna magnetska polja djeluju na fluide koji se sastoje od nabijenih cestica - ioni, elektroliti, plazma, tekuci metali...

Recimo, ljudsko tijelo se sastoji 60% od vode... No u toj vodi ima otopljene soli (NaCl) i elektrolita u velikim kolicinama... I reci da istosmjerno snazno magnetsko polje kakva su prisutna u EV automobilima ne djeluje na covjeka je pomalo blesavo jer sigurno djeluje, pitanje je samo na koji nacin i kojim intenzitetom...


Wifi i ostale visokofrekventne stvari nisu tolki problem jer su to smijesno male snage reda velicine nekoliko W, ali kada imas bateriju ispod guzice iz koje se vuce parsto ampera struje (negdje sam naletio da Tesla P100D vuce do 1425A u full loadu), jbg, elektromagnetsko polje nije bas macji kasalj u tom slucaju...



E za one znatizeljne... U filmu Crveni Oktobar, ruska podmornica koristi MHD pogon... Inace, Japanci su napravili MHD bazirani brod - https://en.wikipedia.org/wiki/Yamato_1

Evo jos nesto malo zanimljivih materijala na koje sam naletio... https://www.kjmagnetics.com/blog.asp?p=red-october
__________________

GMKTec K8Plus
AMD Ryzen 7 PRO 8845HS, 3.80-5.10GHz 8-core
64GB DDR5-5200 (2x32GB), quad-channel
NVMe1 - 512GB Micron 3400, PCI-E 4.0 x4
NVMe2 - 512GB Samsung PM981, PCI-E 3.0 x4
AMD Radeon 780M integrirana grafika


2x EIZO EV2336WFS3-BK
23" 1920x1080 IPS


Dell Latitude 7390
intel i7 8650U, 1.90-4.20GHz, 4-core
32GB DDR4
512GB Samsung PM981, PCI-E 3.0 x4
intel UHD 620
13.3" FullHD IPS Touchscreen


calypso je offline   Reply With Quote