Kuona nekutaridza huremu nemazvo zvinoreva kuyerwa kwehuremu kwakarurama, kwakavimbika, uye kunodzokororwa, izvo zvinovandudza mashandiro anoita sisitimu yese. Kune mainjiniya ehardware vanoshanda padanho rebhodhi, musiyano uripo pakati pekuyera kwakajairika nekuyera kwakanyatsojeka hauwanzove chinhu chimwe chete. Ndiko kukanganisa kwakaunganidzwa kwecheni yese.
Masensa ekuyera uremu anowanzo kupa kuverenga kwakakwana pamabasa akaomarara. Kuona uremu kwakanyatsojeka kunoda kudzora kwakasimba kwekugadzikana kwekufadza, ruzha rweamplifier, resolution yeADC, uye marongerwo. Federal Highway Administration inoshuma kuti kuwedzera masensa ekuyera kwakanyatsojeka uye maalgorithms epamusoro kune masisitimu eWeigh-In-Motion emazuva ano kunoderedza zvikanganiso zvekuyera kusvika ku30%. Izvi zvinoratidza kuti kunyatsojeka kunoenderana zvakanyanya nekugadzirwa kwakanyatsogadzirwa, kwete chete pamasero ekutakura.
Cheni yechiratidzo che sensor-to-display, nzira yekuratidza, uye zvinhu zvekugadzira zvebhodhi zvese zvinoshanda pamwe chete kuti zvigadzire kunyatsojeka kwekupedzisira.
Zvitsva Zvitsva
Kunyatsojeka kunobva muhurongwa hwese, kwete chikamu chimwe chete.
Shandisa chiyero chechiyero kuti udzivise kuyerera kwemhepo.
Chengetedza marongero e analog ari nyore kunzwisisa uye usaakanganisa ruzha.
Tarisa calibration yacho kakawanda kuti irambe yakarurama nekufamba kwenguva.
Funga nezvemutengo uye kururama pakutanga paunogadzira.
Kutsanangura Kuona Kurema Kwakanyatsonaka Nemasero Emutoro
Mabhiriji eStrain Gauge uye Maitiro eSignal
Sero rinorema rinoshandura simba kuita chiratidzo chemagetsi mumatanho maviri. Chekutanga, simba rinokombamisa chikamu chemuchina, uye magauge estrain akanamirwa pachiri anotambanudzwa kana kudzvanywa pamwe chete nacho. Chechipiri, bhiriji reWheatstone rinoshandura shanduko iyoyo yeresistance kuita voltage. Chinhu chinoyera gauge chinotarisa kuti resistance inochinja zvakadii kune imwe strain. Saka bhiriji rinobuda rinoramba riri mu millivolt range uye rinofanira kuwedzerwa risati ragona kuiswa padhijitari.
Unofanira kufunga nezvebhiriji senetwork yakaenzana. Nemaoko akaenzana uye pasina mutoro, voltage inobuda haina. Chero shanduko diki yekudzivirira muruoko rumwe kana kupfuura inokanganisa bhiriji uye inoita voltage yakasiyana. Marongerwo ekota, hafu, uye full-bridge anochinjana sensitivity zvichienderana nemaitiro ekupisa, uye magadzirirwo e full-bridge akajairika mumasero ekutakura akanyatsojeka. Iyi ndiyo hwaro hwemagadzirirwo ese e resistance strain gauge weight sensor.
Kururama Kwemashoko Anokosha
Kururama hakusi nhamba imwe chete. Kugadzirisa, kudzokorora, kurongeka, uye kusvetuka zvese zvinotsanangura nzira yakasiyana iyo sisitimu inogona kutadza nayo, uye masisitimu ekuyera anofanira kuronga ese. Kurongeka igedhi kubva pamutsetse wakatwasuka wakakodzera pakati penzvimbo, kazhinji pasi pe ±0.017% FSO mumasero ekutakura akanyatsojeka. Kudzokorora ndiko kupararira pakati pekutakura kwakafanana, uye kusvetuka kunosanganisira shanduko dzinononoka kubva pakupisa, kukambaira, kana ruzha.
Rudzi rwesero rekutakura | Kusaenderana (% FS) | Hysteresis (% FS) |
|---|---|---|
Chiyero chenguva dzose chekusvuta | ± 0.05 | ± 0.05 |
Chiyero chekusveta-firimu gobvu | ± 0.2 | ± 0.2 |
Hydraulic | ± 0.3 | ± 0.2 |
Masensa ekuyera uremu anowanzo gamuchira ±0.1% yehukuru hwakazara. Basa rekunyora nemazvo mumishonga kana kuyedzwa murabhoritari rinogona kuda ±0.01% kana kupfuura. Unofanira kunyora shoko rega rega rega, nekuti sensa yekuyera uremu ine mutsara wakanaka inogona kuramba ichikundikana kana ichidzokororwa. Musiyano iwoyo unoparadzanisa chiyero chakajairwa kubva pakuona uremu kwakanyatsojeka.
Zano: Bvunza vatengesi kuti vakupe ruzivo rwekusaenderana uye hysteresis panzvimbo dzakasiyana-siyana, kwete nhamba imwe chete yemusoro wenyaya.
Cheni yeChiratidzo cheWeight Sensor paPCB
Kugadzikana kweKufadza uye Kuyera Ratiometric
Bhiriji rinoda voltage inosimudzira kusimba. Zvakajairika i5 V uye 10 V DC. Kubuda kwesero remutoro kunoyera kuenderana nekusimba ikoko, saka shanduko ye0.01% mukusimba inokonzera shanduko ye0.01% mukusimba kwakayerwa. Unofanira kutarisa kuti sosi yekusimba inogona kukurudzira kuramba kwese kwese kwese kwese kwakabatana, kusanganisira kuramba kwetambo.
Kuyera Ratiometric kunobvisa dambudziko guru iri. ADC inoshandisa excitation voltage pachayo sereferensi yayo. Signal nereferensi zvinofamba pamwe chete, uye kuverenga kwedhijitari kunoramba kwakafanana kana excitation ichifamba zvishoma nezvishoma. Sisitimu yakakwana inoshandisa fixed internal reference panzvimbo pezvo, saka kushanduka kwese kwe excitation kunopinda zvakananga mukuverenga. Mazhinji masisitimu ekuyera eindasitiri anoenderana nenzira ye ratiometric. Tarisa kuti chiratidzo chako kana amplifier ndeye ratiometric chaiyo, nekuti mayuniti anodhura zvishoma kazhinji haasi.
Magadzirirwo emagetsi ekuisa zvinhu mumotokari anofanira kupa simba remagetsi rinodzorwa uye rakasimba kuti rishandise simba rebhiriji rekushandisa strain gauge. Kugadzikana kwemagetsi mumotokari kunokanganisa zvakananga kuyera zvakanaka nekuti simba remagetsi mumotokari rinoenderana nechiyero chemagetsi ekuisa zvinhu mumotokari.
Fast transients inogona kuramba ichipfuura. Shandisa linear supply ine ruzha rushoma, uye wedzera LC filtering kune switching supplies. Dzorera excitation uye signal wares kure nemagetsi. Excitation supply yakatsaurirwa yema load cells, pamwe nema ferrite beads kana common-mode chokes pamitsetse ye excitation, inobatsira munzvimbo dzine ruzha. Ground loops inoisa ruzha mune excitation uye signal, saka chengetedza nzira dzekudzoka dzakasiyana.
Zvigadziriso zveInstrumentation uye Delta-Sigma ADCs
Amplifier inofanira kusimudza chiratidzo che millivolt pasina kuwedzera ruzha. Chinangwa chekuramba common-mode yeinenge 100 dB paDC yekushanda nemazvo uye kwekurapa, uye tarisa kurambwa kweAC pafrequency chaiyo yechiratidzo, sezvo ichidonha sezvo frequency ichikwira. Tarisa input offset uye drift: pa gain ye100, 50 µV offset inova 5 mV yekukanganisa kwekubuda. Zero-drift chopper architectures inokodzera magadzirirwo epasi-offset. Shandisa 0.1% kana zviri nani gain-setting resistors, uye simbisa gain-bandwidth product pa operating gain yako.
chidimbu | Zvidimbu zvekey zvine ruzha rwakaderera / kunyatsojeka | Kukodzera maketani e sensor yehuremu |
|---|---|---|
INA128 (TI) | 50 µV Vos, 120 dB CMRR (G≥100), kuwedzera 1–10,000, 700 µA Iq | Masensa emabhiriji, mathermocouple, maECG front-ends |
INA118 (TI) | 50 µV Vos, 110 dB CMRR (G=1000), 70 kHz BW @ G=100, dziviriro yekupinda ±40 V | Zvishandiso zvinotakurika zvine simba shoma, kuwanikwa kwedata |
AD8221 (ADI) | 60 µV Vos yakanyanya, 80 dB CMRR min (G=1), kudonha kwakaderera | Zvishandiso zvemaindasitiri nezvekurapa zvakanyatsonaka |
AD620 (ADI) | Kuwana 1–10,000, mutengo wakaderera, nyore kushandisa chip imwe chete | Kuwedzerwa kwe sensor, ECG, uye zviyero zvekuyera |
LT1167 (ADI) | Ruzha rwakaderera, kunyatsojeka, gain resistor imwe chete yekunze | Kudzora maitiro emaindasitiri, sensor dzemotokari |
INA828 (TI) | Chizvarwa chinotevera chinotsiva INA128: ruzha rwakaderera, simba rakaderera, pinout imwechete | Kuvandudzwa kwezvirongwa zveINA128 |
24-bit delta-sigma ADC inouya mushure me amplifier. PGA yayo yakavakwa mukati inopa purofiti kubva pa1 kusvika ku128, uye converter inogona kusvika ku23-bit ENOB. Firita yeFIR inogona kurongwa inopa 50 Hz uye 60 Hz notch filtering panguva imwe chete, iyo inovhara kupindirana kwemains. Chinogadzirisa LDO chiri pa-chip uye calibration registers chinoderedza huwandu hwezvikamu zvekunze. Iyi architecture inokodzera kuyerwa kwebhiriji muzviyero zvekuyera uye strain gauges, uko resolution inonyanya kukosha kupfuura sample rate. Sensor yehuremu yedhijitari yakavakwa nenzira iyi inogadzirisa shanduko diki dzesimba. Kuverengwa kusina ruzha, kwete kudzika kwebit, kunokuudza resolution chaiyo yesensor yehuremu.
Kurongeka kweBhodhi reMasensa eUremu
Kudzivirira, Kuchengetedza, uye Kuisa Nyeredzi Pasi
Masaini eanalog asina kusimba anobva kumasensa ekurema anofanira kuchengetedzwa kure nemasekete ane ruzha. Isa ma amplifier nema converter stages pedyo nekwakabva masaini. Masaini mapfupi haanyanyi kupindira. Chengetedza masaini ekurema kure nema switching regulators, oscillators, uye mitsetse yedhijitari inomhanya zvakanyanya. Kana mitsetse ichifanira kuyambuka, iyambuka nekona yekurudyi pane kuimhanyisa yakafanana. Kuparadzanisa masaini katatu kupfuura upamhi hwemasaini kunobatsira kuparadzanisa mitsetse inonzwisisika mumarongero akaomarara.
Kuisa nyeredzi pasi kunodzivirira kurongeka. Dzosera nzira yega yega yekudzoka kunzvimbo imwe chete yakajairika. Zvikanganiso zvekugovana-impedance zvinopera kana op-amp supply returns dzasvika panzvimbo yenyeredzi pazvinenge zvadziri. Mhete dzekuchengetedza dzakatenderedza ma nodes ane impedance yakakwira dzinomisa kubuda kwemvura pamusoro, uye kufukidza kwakafanana kunochengetedza hunyoro kuti husanyanya kurwadza. Mapuranga epasi anodzivirira maronda anonzwa uye anoita kuti nzira dzekudzoka dzive pfupi.
chidobi | Dambudziko Ragadziriswa | Guidance |
|---|---|---|
Kugovera | Kutaurirana pakati pemakirasi ezviratidzo | Kuparadzanisa analog yemazinga akaderera kubva kudhijitari |
Kudzika pasi kwenyeredzi | Ma voltage ekukanganisa kwepasi-loop | Imwe pfungwa inowanzo dzoka |
Kuchengetedza | Kubuda kwemvura pamusoro pemvura ine impedance yakakwira | Mhete dzekuchengetedza kumativi ese ebhodhi |
Ndege dzepasi | Kukanganiswa kwenzira yekudzoka | Dzivisa kupatsanuka kwendege pasi pezviratidzo |
Kuisa Michina, Kukwenya, uye Kurodha Kunze Kwepakati
Kuisa zvinhu kunosarudza kana masero ekutakura zvinhu nenzira chaiyo achipa kurongeka kwawo kwakayerwa. Kuisa zvinhu padivi uye nzvimbo dzisina kuenzana zvinogadzira nzvimbo dzekusvuta dzisingagone kugadziriswa. Isa zvinhu pasero rega rega panzvimbo yakagadzikana, yakaenzana, uye batanidza simba rinoshandiswa neakisi yekunzwa. Kuisa zvinhu zvakasimba kunovhara kuwedzera kwekupisa kunokanganisa kugoverwa kwestress sezvo tembiricha ichichinja.
Kureruka kunochinja zvishoma nezvishoma kana mutoro wakadzikama. Kunobvisa simba remasensa ekurema uye kunowedzera kusarongeka. Tora kuverenga nekukurumidza kana uchikwanisa, uye gadzira calibration yenguva dzose kuti ubate kusvetuka. Kurodha kunze kwepakati kunogadzira nguva dzekukotama dzinokonzera zvikanganiso zvespan zvinochinja nenzvimbo yekutakura. Kugadzirisa kona ne trim resistors kana digital indicator kunogadzirisa izvi mumasisitimu ekuyera. Masero emhando yepamusoro emazuva ano anochengetedza kugadzikana kwenguva refu zviri nani kupfuura ±0.02% yesimba rakatarwa pagore. Bata sensor yega yega yeuremu iri mucheni nehanya imwecheteyo, nekuti nzvimbo imwe chete isina simba yekukwirisa inoderedza kuyerwa kwese.
Zano: Tarisa kuti nzvimbo dzese dzekuisa masero ekutakura zvinhu dzakati sandara uye dzakafanana usati waita bvunzo dzekona.
Kuenzanisa uye Kururama muKuona Kurema Kwakanyatsonaka
Kubhadhariswa kweTembiricha uye Kuongororwa kweSpan
Kuchinja kwetembiricha kunofambisa zero point uye span yebhiriji rega rega. Unofanira kuronga zvese zviri zviviri paunogadzira sisitimu. Mageji ekustrain akaenzana anobatsira neizvi. Isa mageji kuitira kuti shanduko dzekupisa dzivabate zvakaenzana uye dzisashande. Kurongeka kwebhiriji rakazara kunoita izvi zvakanaka. Miviri yemasero ekutakura zvinhu yakagadzirwa nemafuta akawandisa anodziya zvishoma inochengetedzawo chimiro chayo chakagadzikana sezvo imba ichidziya kana kutonhorera.
Kune nzira dzakasiyana-siyana dzekubhadhara, uye imwe neimwe inotengesa mutengo uchienzaniswa nehunyanzvi.
nzira | How akunoita | Hunhu hunokosha |
|---|---|---|
Kugadziriswa kwekufadza kwethermistor | Mathermistor anochinja kufadza kwebhiriji kuti adzivise mhedzisiro yekupisa | Inoderedza zvishoma amplitude yechiratidzo (~10%) uye inononotsa kupindura kwekupisa, asi inovandudza kugadzikana |
Muripo wemidziyo yemagetsi | Masensa ekupisa anowedzera uye maseketi anogadzira zvinobuda panguva chaiyo | Mhinduro nekukurumidza; mutengo wakakwira |
Software muripo | Iyo processor inoshandisa modhi yekugadzirisa tembiricha | Inochinjika uye inodhura zvishoma; zvinoenderana nedata rekugadzirisa rakarurama |
Muripo usingashandiswi | Zvigadziriso zve resistors zvinorwisa zvikanganiso zvekutanga, zvakawedzerwa pakugadzirwa | Inoshanda munzvimbo dzine mwero; haigone kubata maitiro akaomarara ekupisa |
Active muripo | Masensa akavakirwa mukati anoyera mamiriro ekunze; microprocessor inoverenga kugadzirisa panguva chaiyo | Inogadzirisa zvikanganiso zvisiri zvemutsara; inovandudza kururama munzvimbo dzinoshanduka |
Kubhadhariswa kwe zero-point kunoita kuti zero-drift curve isatsvedze, izvo zvinokupa nzvimbo yakagadzikana yekutanga kuyera kwakanyatsojeka. Kuongororwa kwespan kunotevera. Isa mass anozivikanwa pakati pemhando dzakasiyana, nyora nhamba dzisina kujeka, uye gadzirisa nzvimbo yakatsetseka. Dzokorora kumhanya patembiricha mbiri kana nhatu. Chengeta coefficients yekugadzirisa mu digital weight sensor kuitira kuti unit irambe yakarurama zvakare mushure mekutumira.
Zano: Dzokorora kugadzirisa span mushure mekugadzirisazve chero kamuchina. Bolt itsva yekumisikidza inogona kuchinja zero kupfuura zvinoita thermal drift.
Ratidza Interface uye Refresh Strategy
Chiratidziro ndicho chinongedzo chekupedzisira mucheni, uye chinogona kukanganisa kunyatsojeka kwakawanikwa nemagetsi. Enzanisa resolution yakaratidzwa nehuwandu husina ruzha hwechishanduri. Kuratidza manhamba ayo sensor yehuremu isingagone kugadzirisa kunoita kuti kuverenga kutsvedzerere, uye vashandisi vanorasikirwa nekuvimba nekuyera. Tenderedza chiratidziro kusvika panhamba yakagadzikana wochibata.
Maitiro ekuvandudza akakoshawo. Kukurumidza kuvandudza kunoratidza ruzha; kunonoka kunonzwa kunonoka. Unofanira kuita avhareji pamusoro pehwindo rinofukidza mains cycles akati wandei, wobva wagadzirisa display nekukurumidza. Wedzera kunonoka kupfupika mushure mekumira kwekufamba. Izvi zvinoita kuti uremu huverengerwezve pane nhamba inotsvaga.
Kugona kuverenga kunopedzisa basa racho. Shandisa font yakajeka, musiyano wakanaka, uye mayuniti akaiswa padivi pemutengo. Kuti uverenge huwandu hwakarurama, ratidza zviratidzo zvekugadzikana uye mureza we zero-tracking. Zviratidzo izvi zvinoudza mushandi kana kuverenga kwacho kwakavimbika. Chishandiso chakagadzirwa zvakanaka chinoshandura ma raw converter counts kuita kuverenga kwedhijitari kwakarurama uko vanhu vanogona kuita.
Danho rega rega rinokosha. Sero rekutakura rinoisa muganho chaiwo, cheni yechiratidzo inodzivirira chiratidzo, uye kuyera pamwe nekuratidzwa zvinochengetedza kuyera kwakarurama nekufamba kwenguva. Tora kuyera senzira, kwete danho renguva imwe chete, uye masisitimu ako ekuyera achapa kururama kwakanyanya muhupenyu hwawo hwese.
Mashandisirwo Anoshanda uye Kuchinjana kweDFM
Masisitimu eIndasitiri, eKurapa, uye eRabhoritari
Zvinangwa zvakarurama zvinochinja nebasa. Unofanira kusarudza masero ekutakura zvinhu kuti aenderane nebasa racho, kwete musoro wedatasheet.
Chikamu Chekushandisa | Zvinodiwa Zvakajairika Zvekururama |
|---|---|
Zvemutemo zvekutengeserana / metrology | ±0.02% (OIML C3) |
Kudzora kwakanyanya kwemaitiro emaindasitiri | ± 0.03% |
Mashandisirwo anonyanya kukosha (hapana kutevedzera mitemo zvakanyanya) | ± 0.05% kusvika ± 0.1% |
Zvinodiwa pakururamisa zvakasiyana pabasa rega rega: chikero chekurapa chinoyera huwandu hwemishonga chinoda kugadziriswa kwakanyatsonaka pane chikero cheindasitiri chinoyera zvinhu zvakakura sejecha kana matombo. Ndosaka masero ekutakura zvinhu achiuya nenzira dzakasiyana dzekururama uye kugona kuti akwane mukushandiswa kwakasiyana-siyana.
Mukugadzira mishonga uye munzvimbo dzemurabhoritari, chinangwa chekuyera zvinhu ndechekunyatsotevedzera mitemo, kunyanya yeActive Pharmaceutical Ingredients (APIs) uye kudzorwa kwemhando. Good Manufacturing Practices (GMP) inoda kururamisa kusvika pa microgram, nekuti kunyangwe shanduko diki dzehuremu dzinogona kuchinja kuenderana uye hunhu hwechigadzirwa chekupedzisira chemushonga. High-resolution analytical balances uye laboratory analytical balances zvinotsamira pama weight sensors ane ruzha rwakaderera uye tight drift control. Nyaya yakaburitswa inoratidza mubairo: Shumate (2018, SLAS Technology) yakasimbisa JAMS platform yekutevera mwero wekugovera mu high-throughput screening. Huremu hwayo hwakayerwa hwakasiyana nehwemanual operator huremu ne1.0% paavhareji, uye yakapa pfupiso dzegravimetric dzenguva chaiyo nenyevero dzinouya nenguva. Chidzidzo ichi chakacherechedzawo mitengo yakakwira uye scalability yakaderera.
Zvipingamupinyi zveKugadzira
Sarudzo yega yega yemutengo inokanganisa bhajeti yekukanganisa. Masensa ekuyera uremu akachipa anowanzova ne "nonlinearity" yakakura uye hysteresis, uye haugone kugadzirisa kukanganisa ikoko padanho rebhodhi. Unofanira kuchengetedza zvikamu zvinoshivirira zvakanyanya kune nzira dzinoisa kururama kwekupedzisira, uye kugamuchira zvikamu zvakasununguka apo chiratidziro chinotenderedza kukosha chero zvakadaro.
Sarudzo dzekubatanidza dzinokoshawo . Kusawirirana kweconnector netambo kunowedzera kubhiriji, saka sarudza zvikamu zvisingabatike zvakanyanya wozviedza. Hunhu hwesolder joint paamplifier ne converter hunokanganisa offset drift, uye IPC-A-610 Class 2 inspection inobata zvakawanda zvezvikanganiso izvi. Conformal coating inowedzera danho rekuita asi inodzivirira high-impedance nodes kubva kuhunyoro. Nguva yekuedza ndeimwe nzira yekuchinjana: calibration yakazara ye multi-point span inodhura zvakawanda payuniti pane cheki imwe chete, asi inochengetedza kururama mu batch yakatumirwa. Kuenzanisa zvirambidzo izvi nekukurumidza, uye mhinduro dzako dzekuyera zvakarurama dzichachengetedza mashandiro adzo ekuyera mumunda.
Kuona huremu nemazvo uye kuratidza zvinokupa zviyero zvaunogona kuvimba nazvo: zvakarurama, zvakavimbika, uye zvinodzokororwa. Kuvimba ikoko kunoita kuti sisitimu yese ishande zviri nani.
Zvidzidzo zvinoshanda kune cheni yese. MaLoad cells anoisa muganho chaiwo, uye maitiro ebhiriji rawo anotsanangura zvinogona kugadziriswa nemagetsi. Dhizaini yecheni yechiratidzo inodzivirira chiratidzo chidiki ichocho. Kurongeka kwebhodhi kunochengetedza ruzha kure naro. Kudzora calibration kunochengetedza kururama nekufamba kwenguva. Kutengeserana kweDFM kunosarudza kana dhizaini ichichengetedza kunyatsojeka kwayo muhuwandu. Masensa ehuremu anopa mubayiro wekutarisira padanho rega rega, uye imwe link isina simba inoganhurira zvimwe zvese.
Zvinodiwa nemazvo zvino zvinoumba magadzirirwo anoitwa masisitimu ekuyera emazuva ano. Mainjiniya emidziyo yemagetsi vanoronga cheni yakazara nekukurumidza vachasangana nazvo.
FAQ
Ndinoda nhamba ngani dzisingade ruzha kuti ndionekwe zvakanaka?
Enzanisa manhamba aunoratidza nehuwandu husina ruzha hwechishanduri. 24-bit delta-sigma ADC inokupa mabhiti akawanda asina kubikwa. Resolution inoshandiswa yakaderera. Ratidza manhamba chete anogona kuchengetwa nesensor yehuremu . Manhamba ekuwedzera anodzima uye anoita kuti vashandisi vasanyanya kuvimba nekuverenga.
Sei kuverenga kwangu kuchichinja-chinja kunyangwe mutoro wacho usingachinji?
Kutsvedza, mhedzisiro yekupisa, uye kuyerera kwemhepo zvinofambisa zvinobuda zvishoma nezvishoma. Tarisa kutanga waisa. Nzvimbo yakakombama kana mutoro wepadivi unowedzera kushushikana uko calibration isingakwanise kubvisa. Wobva wasimbisa kuti excitation source yakagadzikana uye converter ine ratiometric chaiyo. Dzokorora calibration yespan mushure mekugadzirisa chero mechanical.
Ndinofanira kushandisa ratiometric kana absolute reference here?
Sarudza ratiometric yemasisitimu mazhinji ekuyera. ADC inoshandisa voltage yekuwedzeredza sereferensi yayo, saka kuyerera kwekuwedzeredza kunononoka kunodzima. Referensi yakakwana inotumira kushanduka kwese kwekuwedzeredza zvakananga mukuverenga. Iva nechokwadi chekuti chiratidzo chacho ndeche ratiometric chaiyo, nekuti mayuniti anodhura zvishoma kazhinji haasi.
Chinangwa chipi chekururama chinoenderana nekushandisa kwangu?
Basa repamutemo rekutengeserana rinowanzoda mashandiro eOIML C3. Kudzora mashandiro mazhinji emaindasitiri kwakasununguka zvishoma. Zvigadzirwa zvinodhura zvishoma zvisina mitemo yekutevedzera mitemo zvinogona kugamuchira kushivirira kwakakura. Sarudza masero ekutakura zvinhu kuti aenderane nebasa racho, uye yeuka kuti masensa ehuremu akachipa ane kusawirirana kwausingakwanise kugadzirisa padanho rebhodhi.
