Gobe za mu aika da uwar garken mu cikin stratosphere. A lokacin jirgin, balloon stratospheric zai rarraba Intanet, harbawa da watsa bayanan bidiyo da na'urorin telemetry zuwa ƙasa. Mun rubuta sau da yawa cewa za mu yi magana game da fasaha gefen aikin mu "Space Data Center" (a baya amsa sunan ""). Mun yi alkawari - mun isar! A ƙarƙashin yanke akwai ɗimbin guda na kayan aiki da code.
uwar garken yanar gizo
Ko da a cikin aikin da ya gabata na "Server in the Clouds", lokacin da muka hau a cikin balloon mai cikakken aiki tare da ma'aikatan mutane biyu, ɗaukar tare da mu cikakken uwar garken tare da taron baturi, bari mu ce, ba ma'ana ba. Kuma yanzu muna magana ne game da ƙaramin balloon stratospheric, wanda dole ne ya hau kilomita 30, ba 1. Saboda haka, mun zaɓi Rasberi Pi iri ɗaya azaman sabar yanar gizo. Wannan microcomputer zai samar da shafin HTML kuma ya nuna shi akan wani nuni daban.
Haɗin tauraron dan adam
Baya ga Rasberi, modem daga cibiyoyin sadarwar tauraron dan adam na Iridium da Globalstar za su tashi a cikin jirgin. Kamar yadda kuka tuna, mun yi shirin ƙara modem na gidan yanar gizon Gonets zuwa kamfaninsu, amma ba mu da lokacin karɓar sa a gaba, don haka za mu tura shi a jirgin na gaba. Ta hanyar modem na tauraron dan adam, uwar garken gidan yanar gizon za ta karɓi saƙonninku, waɗanda za a iya aika zuwa gare su . Za a aika waɗannan saƙonni zuwa Rasberi Pi, wanda zai yi layi da su kuma ya nuna su a shafin HTML.
Muhimmin batu: iyaka akan tsawon saƙon rubutu a cikin Rashanci shine haruffa 58 (ciki har da sarari). Idan sakon ya fi tsayi, za a yanke shi yayin watsawa. Hakanan, duk haruffa na musamman za a yanke su daga rubutun, misali, /+$%&;''""<>n da makamantansu.
Tunda Rasberi Pi yana da tashar UART guda ɗaya kawai, za mu haɗa modem ɗin tauraron dan adam ta hanyar tsaka-tsaki, wanda zai tattara bayanai daga modem ɗin kuma aika zuwa Raspberry Pi.
Rediyo modem
Sabar gidan yanar gizon ba kawai za ta nuna duk saƙonnin da aka karɓa daga gare ku a kan nuni ba, amma kuma za ta aika shi zuwa Duniya ta hanyar modem na rediyo na LoRa. Don haka muna so mu gwada ra'ayin rarraba Intanet daga stratosphere (haraji ga aikin Google Loon). Tabbas, balloon mu na stratospheric ba cikakken mai maimaita hanyar sadarwa bane, amma ko da karfinsa ya wadatar don watsa bayanan barga, ba tare da asarar bayanai da yawa ba, to lallai tsarin na musamman zai iya jure wa rarraba Intanet daga sararin samaniya.
Telemetry
Bugu da kari, muna shirin nuna bayanan telemetry akan wannan shafin HTML. Rasberi Pi zai ɗauke su daga wani mai sarrafa jirgin daban.
Yana yin tambayoyi daban-daban na na'urori masu auna firikwensin da za a iya sanya su a ciki da wajen akwatin kayan aikin kayan masarufi, tattara bayanan a cikin tari, ya tsefe shi kuma ya ba su cikin tsari mai dacewa ga waɗanda suka tambaya. A cikin yanayinmu, zai nemi Rasberi Pi. Za mu yi rikodin matsa lamba, tsawo, GPS daidaitawa, a tsaye da a kwance gudun da zafin jiki.
Ana watsa bayanan daga mai sarrafa jirgin cikin dogon layi, wanda shine, ta amfani da wannan lambar:
$str = 'N:647;T:10m55s;MP.Stage:0;MP.Alt:49;MP.VSpeed:0.0;MP.AvgVSpeed:0.0;Baro.Press:1007.06;Baro.Alt:50;Baro.Temp:35.93;GPS.Coord:N56d43m23s,E37d55m68s;GPS.Home:N56d43m23s,E37d55m68s;Dst:5;GPS.HSpeed:0;GPS.Course:357;GPS.Time:11h17m40s;GPS.Date:30.07.2018;DS.Temp:[fc]=33.56;Volt:5.19,0.00,0.00,0.00,0.00,0.00,0.00,0.00';
parse_str(strtr($str, [
':' => '=',
';' => '&'
]), $result);
print_r($result);juya zuwa tsararru a cikin tsari mai dacewa don nunawa:
Array
(
[N] => 647
[Т] => 10m55з
[MP_Stage] => 0
[MP_Alt] => 49
[MP_VSpeed) => 0.0
[MP_AvgVSpeed] => 0.0
[Baro Рrеss] => 1007.06
[Baro_Alt] => 50
[Baro_Temp] => 35.93
[GPS_Coord] => N56d43m23s,E37d55m68s
[GPS_Home) => N56d43m23s,E37d55m68s
[Dst] => 5
[GPS_HSpeed] => 0
[GPS_Course] => 357
[GPS_Time] => 11h17m40s
[GPS_Date] => 30.07.2018
[DS_Temp] => [fс] ЗЗ.56
[Volt] => 5.19, 0.00,0.00,0.00,0.00,0.00,0.00,0.00
)Za mu kuma watsa bayanan telemetry zuwa Duniya tare da saƙonninku. Don yin wannan, za mu tura tashar karɓa a wurin ƙaddamarwa.
Nuni da kamara
Domin ku tabbata cewa uwar garken tana karɓar saƙonninku ta hanyar sadarwar tauraron dan adam, kuma a zahiri ta tashi zuwa cikin stratosphere kuma ba ta tsaye a ofishinmu ba, mun yanke shawarar nuna duk saƙonni tare da telemetry akan nunin da za a kama shi. da GoPro. Akwai ɗan lokaci kaɗan don shirya aikin (ta yaya za a iya kasancewa mai yawa?!), Don haka ba mu damu da Aliexpress da ƙarfe mai siyar ba, amma a maimakon haka mun ɗauki na'urar da aka yi. Ya fi isa ga bukatunmu. Za mu haɗa nuni zuwa Rasberi ta hanyar HDMI.
Har ila yau, muna shirin watsa bidiyo daga GoPro ta hanyar tashar rediyo ta daban, amma yadda zai yi aiki har yanzu ba a san shi ba - watakila ƙananan girgije zai rage girman sadarwa. Amma a kowane hali, bayan mun sami balloon stratospheric mai saukarwa, za mu sanya bidiyo daga kyamara kuma za ku iya gani da kanku waɗanne saƙonnin da muka samu "cibiyar bayanan sararin samaniya" da kuma irin tsayin da ya hau - za a nuna na'urar ta telemetry. a cikin wannan shafin HTML, Bugu da ƙari, za a iya ganin yanki na sararin sama.
Питание
Duk kyawawan abubuwan da aka kwatanta a sama za su kasance da ƙarfi ta hanyar taron batir lithium da aka haɗa bisa ga da'irar 3S4B - uku a jere, huɗu a layi daya. Matsakaicin ƙarfin yana da kusan 14 Ah a ƙarfin lantarki na 12 V. Bisa ga ƙididdigarmu, wannan ya kamata ya isa, amma bayan taro na ƙarshe, ba shakka, za mu auna ainihin amfani, kuma idan ya cancanta, ƙara ƙarin batura.
Ƙara zuwa duk waɗannan tashoshi na GPS, waɗanda za mu yi amfani da su don nemo balloon stratospheric mai ƙasa. Kuma akwatin hermetic zai zama "gidan" don uwar garken da sauran na'urori.
Zai kare kayan aiki masu laushi daga yanayin zafi da canjin matsa lamba. A lokaci guda kuma, zai rage adadin radiation, kodayake wannan ba ya taka rawa ga aikinmu, uwar garken zai tashi a cikin stratosphere na ɗan gajeren lokaci, kuma bayanan baya da girma kamar na ISS.
Baya ga aika saƙonni zuwa ga , za ku iya shiga gasar ku yi hasashen inda binciken zai sauka. Babban kyautar shine tafiya zuwa Baikonur don ƙaddamar da jirgin saman Soyuz-MS-13.
source: www.habr.com