FHSS, frequency hopping kupararira tekinoroji tekinoroji, pasi pemamiriro ekuyananisa uye panguva imwe chete, inogamuchira masaini anofambiswa neakamanikana-bhendi anotakura emhando chaiyo (iyi fomu chaiyo ine chaiyo frequency, nezvimwewo) kumigumo yese. Kune anogamuchira asina rudzi rwakati, chiratidzo chekusvetuka chinogadzirwa neFHSS inongori mhere mhere kwairi uye haigamuchire chikamu ichi chechiratidzo.
Nei FHSS ichidikanwa?Ehe, data rekutumira harizove rakakura chete mukati meiyo yakatarwa. Kana iyo nguva yekufambisa yepakiti imwe chete yedata inogona kudarika yakanyanya chiteshi nguva yekugara inobvumidzwa nemirairo yakakodzera, FHSS tekinoroji ichashandiswa. Kugonesa iyo frequency hopping modhi muLora, shandisa iyo reg hopping nguva uye frequency hopping nguva marejista kuti uzviise kune asiri-zero kukosha. Izvi zvinotevera zvinotsanangura pfungwa dzezivo dzechikamu ichi zvakajeka kuburikidza nemusimboti.
Musimboti:Nheyo yekushanda yeFHSS frequency hopping spread spectrum scheme ndeye: kuti kana frequency hopping ichidikanwa kune chikamu chega yega Lora data packet, zvirimo zvinofanirwa kutumirwa kuburikidza neiyo frequency hopping chiteshi yakaiswa neMCU manejimendi. Iyo frequency yekukwizwa inodiwa kutumirwa zvinoenderana neiyo frequency query table. Mushure mekunge kuendesa data kwapedzwa uye iyo yakafanotemerwa frequency hopping nguva yapera, iyo inofambisa uye inogamuchirachinjakune inotevera chiteshi mune frequency hopping yakafanotsanangurwa runyorwa kuti uenderere mberi nekutumira uye kugamuchira chikamu chinotevera che data packet. Nguva yekugara mune chero chiteshi inotarwa neiyo frequency hopping nguva, inova nhamba yakawanda yehurefu hwechiratidzo.
Nzira yekutumirauye kugamuchira kuburikidza nefrequency hopping kunotanga kubva kuchiteshi 0. Nhanganyaya uye musoro zvinofambiswa pachanera 0 kutanga. Pese painotumirwa data pakiti, kuverenga kweiyo chiteshi counter pane yazvino chiteshi (iri mune reg hopping chiteshi) kuchawedzera, uye inovhiringidza chiratidzo cheFHSS shanduko chiteshi ichagadzirwa kuti iwane frequency hopping. Frequency nyowani inofanirwa kusetwa munguva yefrequency hopping kuti ive nechokwadi chekuti frequency nyowani ichavharwa mune inotevera frequency hopping. Tarisa maitiro: tanga FHSS kugamuchira pane chiteshi 0. Mushure mekutarisa preamble, mugamuchiri anotanga iyo iri pamusoro frequency hopping process. Panguva ino, kana iyo CRC yemusoro isiriyo, inogamuchira inongokumbira chiteshi 0 (packet retransmission mechanism) uye wotangazve kutarisa yekutanga.
Tsananguro yechinyorwa chiri pamusoro cheiyo frequency hopping spread spectrum communication (FHSS) yakaunzwa kwauriShenzhen HDV Phoelectron Technology Co., Ltd. Ndinovimba chinyorwa ichi chinogona kukubatsira iwe kuwedzera ruzivo rwako. Kunze kwechinyorwa ichi kana iwe uchitsvaga yakanaka optical fiber yekutaurirana michina yekugadzira kambani yaungafunganezvedu.
