Malangizo a Bus Transmitter
485 ndi mtundu wamabasi omwe amagwiritsidwa ntchito kwambiri polumikizana ndi mafakitale.Kulankhulana kwa 485 kumangofunika mawaya awiri (mzere A, mzere B), kutumizirana mtunda wautali kumalimbikitsidwa kugwiritsa ntchito zopotoka zotetezedwa.Theoretically, pazipita kufala mtunda wa 485 ndi mapazi 4000 ndi pazipita kufala mlingo ndi 10Mb/s.Kutalika kwa peyala yopotoka moyenerera ndi yofanana ndi kuchuluka kwa kufalikira, komwe kumakhala pansi pa 100kb / s kuti ifike pamtunda wodutsa.Kuthamanga kwapamwamba kwambiri kungathe kupezedwa pamtunda waufupi kwambiri.Nthawi zambiri, kuchuluka kwa kufala komwe kumapezeka pawaya wopotoka wa 100 metres ndi 1Mb/s kokha.
Pazinthu zoyankhulirana 485, mtunda wopatsirana makamaka umadalira chingwe chotumizira chomwe chimagwiritsidwa ntchito, nthawi zambiri ngati peyala yopotoka yotetezedwa bwino, mtunda wotumizira umakhala patali.
Pali mbuye m'modzi yekha mu basi ya 485, koma zipangizo zambiri za akapolo zimaloledwa.Mbuyeyo akhoza kulankhulana ndi kapolo aliyense, koma sangathe kulankhulana pakati pa akapolo.Mtunda wolankhulana umadalira muyezo wa 485, womwe umagwirizana ndi waya wa waya wogwiritsidwa ntchito, malo olumikizirana njira, kuchuluka kwa kulumikizana (mlingo wa baud) ndi kuchuluka kwa akapolo olumikizidwa.Pamene mtunda wolankhulana uli patali, kukana kwa 120-ohm kumafunika kuti pakhale chitukuko cha kulankhulana ndi kukhazikika.
Njira zolumikizidwa za transmitter ya basi ndi kabati yowongolera mabasi ndi izi:
Chithunzi 1: Njira yolumikizira nduna ya mabasi yolumikizira mabasi
Sensor: mpweya wapoizoni ndi electrochemical, mpweya woyaka ndi woyambitsa kuyaka, mpweya woipa ndi infrared
Nthawi yoyankha: ≤40s
Ntchito mode: ntchito mosalekeza
Mphamvu yogwiritsira ntchito: DC24V
Zotulutsa njira: RS485
Kutentha osiyanasiyana: -20 ℃ ~ 50 ℃
Mtundu wa chinyezi: 10 ~ 95% RH [palibe condensation]
Satifiketi yotsimikizira kuphulika No.Chizindikiro: CE15.1202
Chizindikiro chosaphulika: Exd II CT6
Kuyika: kokwezedwa pakhoma (chidziwitso: onetsani zojambulazo)
Mawonekedwe: chipolopolo cha transmitter chimatenga chipolopolo cha aluminiyamu chakufa chopangidwa ndi mawonekedwe osayaka moto, kapangidwe kake kachivundikiro kamene kamakhala kothandiza kutseka chipolopolocho, kutsogolo kwa sensor kumapangidwa ndi mawonekedwe otsika kuti zitsimikizire kulumikizana kwabwino pakati pa sensor. ndi mpweya, ndipo polowera amatenga malo osaphulika madzi.
Kunja miyeso: 150mm×190mm×75mm
Kulemera kwake: ≤1.5kg
Table 1: General gasi parameter
| Gasi | Dzina la gasi | Technical index | ||
| Muyezo osiyanasiyana | Kusamvana | Alamu point | ||
| CO | Mpweya wa carbon monoxide | 0-1000pm | 1 ppm | 50 ppm |
| H2S | Hydrogen sulfide | 0-100ppm | 1 ppm | 10 ppm |
| EX | Gasi woyaka | 0-100% LEL | 1% LEL | 25% LEL |
| O2 | Oxygen | 0-30% vol | 0.1% vol | Otsika 18% vol Okwera 23% vol |
| H2 | haidrojeni | 0-1000pm | 1 ppm | 35 ppm |
| CL2 | Chlorine | 0-20 ppm | 1 ppm | 2 ppm |
| NO | Nitric oxide | 0-250pm | 1 ppm | 35 ppm |
| SO2 | Sulfur dioxide | 0-100ppm | 1 ppm | 5 ppm |
| O3 | Ozoni | 0-50 ppm | 1 ppm | 2 ppm |
| NO2 | Nitrogen dioxide | 0-20 ppm | 1 ppm | 5 ppm |
| NH3 | Ammonia | 0-200ppm | 1 ppm | 35 ppm |
| CO2 | Mpweya wa carbon dioxide | 0-5% vol | 0.01% vol | 0.20% vol |
Zindikirani: tebulo 1 lomwe lili pamwambali ndi magawo onse a gasi.Chonde funsani wopanga gasi wapadera ndi zofunikira zosiyanasiyana.
Bus transmitter system ndi makina owunikira (gasi) omwe amaphatikiza ma transmitter ndi ma 485 sign transmitter ndipo amadziwikiratu ndikuwongoleredwa ndi PC host host kapena control cabinet.Ndi kutulutsa kwa relay, relay idzatseka pamene mpweya wa gasi uli mumtundu wa alamu.Dongosolo la ma transmitter amabasi adapangidwa molingana ndi kapangidwe kake ka 485 bus network, ndipo amagwiritsidwa ntchito pamayendedwe olumikizirana ma bus 485.
Chithunzi 2: Chithunzi chamkati cha transmitter
Zofunikira zama waya pama bus transmitter system ndizofanana ndi mabasi a 485.Komabe, imaphatikizanso zinthu zina zodzipangira zokha, monga:
1. Zamkati zaphatikizidwa ndi 120 ohm offset resistance, zosankhidwa ndi kusintha.
2. Nthawi zambiri, kuwonongeka kwa ma node ena sikungakhudze momwe ma transmitter amabasi amagwirira ntchito.Komabe, ziyenera kunenedwa kuti ngati zigawo zazikulu mkati mwa node zawonongeka kwambiri, chotumizira basi chonse chikhoza kukhala chopuwala.Ndipo Chonde funsani wopanga kuti mupeze mayankho enieni.
3. Ntchito ya kachitidwe imakhala yokhazikika, kuthandizira maola 24 a ntchito yosalekeza.
4. Chilolezo chachikulu cha theoretical ndi 255 node.
Zindikirani: chingwe cha siginecha sichigwirizana ndi pulagi yotentha.Kugwiritsa ntchito kovomerezeka: choyamba kulumikiza mzere wamabasi 485, kenako perekani mphamvu kuti nodi igwire ntchito.
Njira yokwezera khoma: jambulani mabowo pakhoma, gwiritsani ntchito mabawuti okulirapo 8mm × 100mm, konzani ma bolts pakhoma, ikani chowulutsira, kenako ndikuchikonza ndi nati, zotanuka ndi pad lathyathyathya, monga tawonera pa chithunzi 3.
Wotumizayo atakhazikika, chotsani chivundikiro chapamwamba ndikuwulula chingwe cholowera.Onani chithunzi cha ma terminals olumikizira okhala ndi polarity yabwino ndi yoyipa (Kulumikizana kwa mtundu wa Ex), kenaka tsekani cholowa chosalowa madzi, limbitsani chivundikiro chapamwamba mutayang'ana.
Zindikirani: sensor iyenera kukhala pansi ikayikidwa
Chithunzi 3: Miyeso yakunja ndi kuyika kwa dzenje bitmap ya transmitter
1. Zingwe ziwiri zimalimbikitsidwa pa chingwe cha mphamvu ndi chizindikiro.Chingwe chamagetsi CHIMAPHUNZITSA PVVP, ndipo chingwe cha siginecha chiyenera kutengera awiri opotoka ovomerezeka padziko lonse lapansi (RVSP zopotoka).Kugwiritsiridwa ntchito kwa mawaya opotoka otetezedwa kumathandiza kuchepetsa ndi kuthetsa mphamvu yogawidwa yomwe imapangidwa pakati pa mizere iwiri yolumikizirana ya 485 ndi kusokoneza wamba komwe kumapangidwa kuzungulira mizere yolumikizirana.485 kufala mtunda ndi wosiyana malinga ndi waya anasankha, ndipo zambiri safika ongoyerekeza pazipita mtunda kufala.Ndibwino kuti musagwiritse ntchito chingwe chapakati cha 4, mphamvu ndi chizindikiro pogwiritsa ntchito chingwe chomwecho.Chithunzi 4 ndi mzere wa chizindikiro, ndipo chithunzi 5 ndi chingwe chamagetsi.
Chithunzi 4: Mzere wa Signal
Chithunzi 5: Mzere wamagetsi
2. Waya wotumizira pomanga kuti apewe kuchitika kwa loop, ndiko kuti, kupanga koyilo yamitundu yambiri.
3. Pamene ntchito yomanga iyenera kukhala yosiyana kupyolera mu chubu, momwe mungathere kutali ndi waya wothamanga kwambiri, kupewa pafupi ndi magetsi amphamvu, maginito amphamvu a maginito.
Mabasi 485 kuti agwiritse ntchito manja ndi manja, kuthetsa mwatsatanetsatane kugwirizana kwa nyenyezi ndi kugwirizanitsa kwa bifurcation.Kulumikizana kwa nyenyezi ndi kulumikizidwa kwa bifurcated kudzatulutsa chizindikiro chowonetsera, zomwe zimakhudza kulumikizana kwa 485.Chishangocho chimalumikizidwa ndi nyumba yotumizira ma transmitter.Chithunzi cha mzere chikuwonetsedwa mu chithunzi 6.
Chithunzi 6: Tchati chatsatanetsatane
Chojambula cholondola cha mawaya chikuwonetsedwa mu chithunzi 7 ndipo chithunzi cholakwika cha waya chikuwonetsedwa pa chithunzi 8.
Chithunzi 7: Chojambula cholondola cha waya
Chithunzi 8: Chithunzi cholakwika cha waya
Ngati mtunda uli wautali kwambiri, wobwereza amafunika, ndipo njira yolumikizira yobwereza ikuwonetsedwa mu chithunzi 9. Wiring yamagetsi sikuwonetsedwa.
Chithunzi 9: Njira yolumikizira yobwereza
4. Mawaya akamalizidwa, gwirizanitsani mbali za ma transmitter poyamba, dulani chingwe chamagetsi ndi mzere wa chizindikiro, ndipo gwirizanitsani mapeto a transmitter, monga momwe tawonetsera mu chithunzi 2. Gwiritsani ntchito multimeter kuyesa ngati pali dera lalifupi pakati pa zizindikiro. ndi mizere yamagetsi. Mtengo wotsutsa pakati pa mzere wa chizindikiro A ndi B uli pafupi ndi 50-70 ohms.Chonde onani ngati wolandirayo atha kulumikizana ndi ma transmitter aliwonse ndikulumikiza magawo ena kuti ayesedwe.Khazikitsani chosinthira chomaliza cholumikizidwa pano, Chosinthira china chosinthira kukhala 1.
Zindikirani: kutha komaliza ndikungolumikizana ndi waya wa basi.Njira ina yolumikizira mawaya ndiyosaloledwa.
Pakakhala ma transmitters ambiri komanso mtunda wautali, chonde tcherani khutu pansipa:
Ngati node zonse zikulephera kulandira deta, ndipo kuwala kwa chizindikiro mu transmitter sikugwira ntchito, zimasonyeza kuti magetsi sangapereke zokwanira panopa, ndipo magetsi ena osinthira amafunika, choncho tikulimbikitsidwa kugwiritsa ntchito magetsi apamwamba. .Pamalo pakati pa magetsi awiri osinthira, kulumikiza 24V +, 24V- yolumikizidwa kuti musasokonezedwe pakati pa magetsi awiri osinthira.
B. Ngati kutayika kwa node kuli kwakukulu, ndichifukwa chakuti mtunda wolankhulana uli kutali kwambiri, deta ya basi siili yokhazikika, iyenera kugwiritsa ntchito kubwereza kuti iwonjezere mtunda wolankhulana.
5. The bus wire transmitter ili ndi imodzi yokha yotseguka yotsegula yopitako. Pamene mpweya wa gasi umadutsa alamu yokonzedweratu, relay imatsekedwa, pansi pa alamu, relay idzachotsa wogwiritsa ntchitoyo apanga waya malinga ndi zofunikira.Ngati mukufuna kuwongolera fani kapena zida zina zakunja, chonde gwirizanitsani zida zakunja ndi mawonekedwe otumizirana maulumikizidwe pamndandanda wamagetsi oyenera (monga momwe ziwonetsedwera mu chithunzi 10 chithunzi cha mawaya a relay)
Figure 10 chithunzi cha mawaya a relay
RS485 bus transmitter system yokhudzana ndi zovuta ndi mayankho
1. Ma terminals ena alibe deta: nthawi zambiri node sikugwiritsidwa ntchito chifukwa chazifukwa zina zakunja, njira ndiyo kuyang'ana ngati kuwala kwa chizindikiro pa bolodi la dera likuwunikira. mosiyana.
2. Kuwala kowonetsera kumawunikira bwino, koma palibe deta.Ndikofunikira kuti muwone ngati mawaya A ndi B amalumikizidwa bwino komanso ngati alumikizidwa mosinthika.Chotsani mphamvu ya node iyi ndikulumikizanso chingwe cha data kuti muwone ngati mungapeze deta iyi ya node.Chidziwitso chapadera: musagwirizane chingwe chamagetsi ku doko la chingwe cha data, chidzawononga kwambiri chipangizo cha RS485.
3. Kulumikizana kolowera kumafunika.Ngati mawaya a basi 485 ndi otalika kwambiri (kupitirira mamita 100), tikulimbikitsidwa kuti tigwiritse ntchito mapeto.Kulumikizana komaliza kumafunika kumapeto kwa RS485, monga momwe tawonetsera mu chithunzi 2. Ngati waya wa basi ndi wautali kwambiri, wobwerezabwereza kugwirizana kungagwiritsidwe ntchito kukulitsa mtunda wotumizira.
4. Kupatulapo mavuto omwe ali pamwambawa, ngati kuwala kowonetserako kumawoneka bwino (1 kung'anima pamphindi) ndipo kuyankhulana kumalephera, node ikhoza kuweruzidwa kuonongeka (ngati kuyankhulana kwa mzere kuli kozolowereka) .Ngati chiwerengero chachikulu cha node sichingathe kuyankhulana, chonde choyamba imawonetsetsa kuti mizere yamagetsi ndi yolumikizirana ili bwino, kenako funsani thandizo laukadaulo loyenera.
Chitsimikizo cha chida choyesera gasi chopangidwa ndi kampani yathu ndi miyezi 12, yomwe imayamba kuyambira tsiku loperekera.Pogwiritsa ntchito, wogwiritsa ntchito ayenera kutsatira malangizo ogwiritsira ntchito, chifukwa chogwiritsa ntchito molakwika, kapena mikhalidwe yogwirira ntchito yomwe idayambitsa chidacho. kuwonongeka, sikukuphimbidwa mu chitsimikizo.
Chonde werengani malangizo mosamala musanagwiritse ntchito chida.
Kugwiritsiridwa ntchito kwa chidacho kuyenera kutsatira malamulo omwe afotokozedwa mu malangizowo.
Kukonza zida ndi kusinthidwa kwa magawo kudzayendetsedwa ndi kampani yathu kapena malo okonzerako komweko.
Ngati wogwiritsa ntchito satsatira malangizo omwe ali pamwambawa, yambitsani kapena kusintha magawowo, kudalirika kwa chidacho kuyenera kukhala udindo wa woyendetsa.
Kugwiritsiridwa ntchito kwa chidacho kudzatsatiranso malamulo ndi malamulo a akuluakulu apakhomo okhudzidwa ndi kayendetsedwe ka zipangizo mufakitale.
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