Smart Weigh e ikemiselitse ho thusa bareki ho eketsa tlhahiso ka theko e tlase.
Puo
Smart Weigh e ikemiselitse ho thusa bareki ho eketsa tlhahiso ka theko e tlase.
Mongoli: Smartweigh–Multihead Weighter
The digital display multihead weigher e entsoeng pampiring ena ke sesebelisoa sa pontšo ea ho laola boima bo itšetlehileng ka mochine oa ho hanyetsa matla a ho hanyetsa le moralo oa microcomputer e le 'ngoe e le senotlolo sa ho laola. Sebaka sa ho lemoha ke 0-10kg, 'me tekanyo ea tekanyo e nepahetse±2g, skrine ea kristale ea metsi e bonts'a tlhahisoleseling ea data e nepahetseng ea litekanyo, ntle le moo, tlhahisoleseling ea data e nepahetseng e ka romelloa komporong ea elektroniki bakeng sa tlhaiso-leseling ho latela boema-kepe ba serial. Software ea tsamaiso e na le litšobotsi tsa ho nepahala ho phahameng, litšobotsi tse tsitsitseng le ts'ebetso e bonolo. Setšoantšo sa foreimi ea moralo oa moralo oa li-weigher tse ngata se bontšoa ho Setšoantšo sa 1 ka tlase: 1. Molao-motheo oa potoloho ea hardware 1.1. The bekha sensor resistor Sensor e boima ba matla e entsoe ka likarolo tse ngata tsa bohlokoa tse kang li-resistance gauges, polyurethane elastomers le li-circuits tsa tlhahlobo ea motlakase. theha.
Polyurethane elastomer e baka deformation elastic tlas'a matla a ka ntle, e le hore tekanyo ea khatello e khomaretsoeng holim'a eona le eona e baka deformation. Ka mor'a hore tekanyo ea khatello ea khatello e fokotsehe, boleng ba eona ba ho hanyetsa bo tla fetoha (ho atolosa kapa ho fokotseha), ebe ka tekanyo e batlang e nepahetse Potoloho ea matla e fetola mochine ona hore e be lets'oao la elektronike (voltage e sebetsang kapa ea hona joale), ebe e phethela mokhoa oohle oa ho fetola. matla a kantle ho sesupo sa elektronike. Lekola potoloho ea phepelo ea motlakase joalo ka ha ho bonts'itsoe ho Setšoantšo sa 2, 'me u fetole ho hanyetsa ha sekhahla sa khatello ea khatello hore e be sephetho sa motlakase o sebetsang. Hobane borokho ba Wheatstone bo na le melemo e mengata, joalo ka bokhoni ba ho hatella kotsi ea phetoho ea mocheso, ho hatella tšusumetso ea matla a lehlakoreng, le ho sebetsana habonolo le bothata ba matšeliso a sensor ea boima, borokho ba Wheatstone bo fumane molemo o moholo ho kutlo ea ho bekha. tshebediso ya lefatshe lohle.
Sensor ea boima ka kakaretso e na le mela e mene ea tlhahiso, 'me khanyetso ea tlhahiso hangata ke 350Ω, 480Ω, 700Ω, 1000Ω. Qetellong ea ho kenya ka kakaretso e fana ka matšeliso a itseng bakeng sa mocheso le kutlo, 'me sehanyetsi sa ho qetela se tla ba holimo ho feta qetellong ea tlhahiso. 20 ~ 100Ω, kahoo Sebelisa multimeter ea dijithale ho lekanya boleng ba khanyetso ho tseba li-terminals tsa tlhahiso. 1.2. Letšoao la data la tlhahiso ea sensor ea boima ba potoloho ea mofuta oa boima ha le matla (mV kapa esita le μV heavyweight), 'me hangata ho na le lerata le leholo hammoho le eona. Bakeng sa lets'oao le joalo la data, mohato oa pele oa tharollo ea potoloho ea phepelo ea motlakase hangata ke ho khetha amplifier ea lisebelisoa ho qala ho holisa lets'oao le lenyane la data.
Potoloho ea motlakase ea amplifier ea lisebelisoa e na le matla a ho hana mokhoa o tloaelehileng ho feta potoloho e bonolo ea phapano ea amplifier. Sepheo sa bohlokoa ka ho fetisisa sa ho eketseha ha se boleng ba phaello, empa ke feela ho ntlafatsa botsitso ba maqhubu a potoloho ea phepelo ea matla. Lenaneong lena la moralo, amplifier ea lisebelisoa e nka sebopeho sa li-amplifiers tse tharo tse sebetsang tsa OP07.
3 joalokaha ho bontšitsoe setšoantšong. Ha R1=R2, R3=R4, Rf=R5, boleng ba phaello ea potoloho ea phepelo ea matla ke: G=(1+2R1/RG1) (Rf/R3). E ka bonoa ho tsoa ho palo ea foromo hore phetoho ea boleng ba phaello ea potoloho ea phepelo ea matla e ka phethoa ka ho fetola boleng ba ho hanyetsa ba RG1.
1. 3. A/D phetolo ea phepelo potoloho A/D converter khetha elektronike sekala-specific kopantswe icHX711, e leng 24-bit A/D converter kopantswe ic e khethehileng etselitsoeng ka ho khetheha bakeng sa ho phahameng-ho nepahala elektronike sekala. Ha ho bapisoa le li-IC tse ling tse kopantsoeng tsa mofuta o tšoanang, IC e kopantsoeng e kopanya lipotoloho tse hlokahalang bakeng sa li-IC tse ling tse kopantsoeng tsa mofuta o ts'oanang, ho kenyelletsa le phepelo e laoloang e laoloang, on-chip clock oscillator, joalo-joalo. Kenya sesebelisoa ho khetha mocha oa tšireletso A kapa mocha oa tšireletso oa B ka ho rata, 'me sehokelo sa taolo ea lenaneo le lerata le tlase se hoketsoe lipakeng tsa tse peli.
Boleng ba phaello ea molaoli oa lenaneo la mocha oa polokeho A ke 128 kapa 64, 'me moeli o felletseng oa mokoloto oa phapano ea phapano ea lets'oao la data ea amplitude ke ka ho latellana.±20m.
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