Shuohao Cai, mudzidzi wechiremba musainzi yevhu, anoisa tsvimbo ine sensor ine multifunction sensor sticker inobvumira kuyerwa pakadzika kwakasiyana muvhu paYunivhesiti yeWisconsin-Madison Hancock Agricultural Research Station.
MADISON - Yunivhesiti yeWisconsin-Madison mainjiniya akagadzira masensa anodhura anogona kupa kuenderera, chaiyo-nguva yekutarisisa nitrate mune yakafanana Wisconsin ivhu mhando. Aya akadhindwa emagetsi masensa anogona kubatsira varimi kuita sarudzo dzekutonga kwekudya uye kuona mabhenefiti ehupfumi.
“Masensa edu anogona kupa varimi kunzwisisa kuri nani kwekudya kwevhu ravo uye huwandu hwenitrate inowanikwa kuzvirimwa zvavo, zvichivabatsira kuti vanyatsoona kuti imarii efetireza yavanoda,” akadaro Joseph Andrews, mutevedzeri wapurofesa paHarvard University. Chidzidzo ichi chaitungamirwa neChikoro cheMechanical Engineering paYunivhesiti yeWisconsin-Madison. “Kana vakakwanisa kudzikisa huwandu hwefetereza yavanotenga, mari inochengetedzwa inogona kuve yakakosha kumapurazi makuru.
Nitrates kudya kwakakosha pakukura kwembesa, asi yakawandisa nitrate inogona kubva muvhu ichipinda mumvura yepasi. Kusvibiswa kwemhando iyi kunokuvadza vanhu vanonwa mvura ine tsvina uye inokuvadza kune zvakatipoteredza. Sensor itsva yevatsvaguri inogona zvakare kushandiswa sechishandiso chekutsvagisa zvekurima chekutarisa nitrate leaching uye kubatsira kugadzira akanakisa maitiro ekudzikisa kukuvadza kwayo.
Nzira dzazvino dzekutarisa ivhu nitrate ibasa-yakawanda, inodhura, uye haipe data chaiyo-nguva. Ndosaka nyanzvi yezvemagetsi yakadhindwa Andrews nechikwata chake vakagadzirira kugadzira mhinduro iri nani, isingadhure.
Muchirongwa ichi, vatsvakurudzi vakashandisa inkjet kudhinda maitiro kuti vagadzire potentiometric sensor, rudzi rwehutete-firimu electrochemical sensor. Potentiometric sensors inowanzo shandiswa kuyera chaizvo nitrate mumhinduro dzemvura. Nekudaro, masensa aya kazhinji haana kukodzera kushandiswa munzvimbo dzevhu nekuti ivhu rakakura rinogona kukwenya masensa uye kudzivirira kuyerwa chaiko.
"Chinetso chikuru chatakanga tichiedza kugadzirisa ndechekutsvaga nzira yekuita kuti magetsi emagetsi aya ashande zvakanaka mumamiriro evhu akaoma uye kunyatsoona nitrate ions," akadaro Andrews.
Mhinduro yechikwata yaive yekuisa musara we polyvinylidene fluoride pane sensor. Maererano naAndrews, chinyorwa ichi chine maitiro maviri akakosha. Chekutanga, ine tunhu tudiki-diki, tunosvika nanometer 400 muhukuru, iyo inobvumira maion e nitrate kupfuura nepo ichivharira zvidimbu zvevhu. Chechipiri, inonzi hydrophilic, ndiko kuti, inokwezva mvura uye inoitora sesiponji.
"Saka chero mvura ine nitrate-yakawanda ichapinda mukati me sensors yedu, iyo inonyanya kukosha nokuti ivhu rakafanana nesiponji uye iwe ucharasikirwa nehondo maererano nekunyorova kupinda mu sensor kana iwe usingakwanisi kuwana mvura yakafanana. Ivhu rinogona," Andrews akadaro. "Izvi zvimiro zvepolyvinylidene fluoride layer zvinotitendera kuburitsa mvura ine nitrate-yakawanda, toiendesa kune sensor pamusoro uye kunyatsoona nitrate."
Vatsvagiri vakatsanangura kufambira mberi kwavo mupepa rakaburitswa munaKurume 2024 mujenari Advanced Materials Technology.
Chikwata chakaedza sensor yavo pamhando mbiri dzakasiyana dzevhu dzakabatanidzwa neWisconsin-ivhu rejecha, rinowanikwa kuchamhembe-pakati penzvimbo dzehurumende, uye silty loams, inowanikwa kumaodzanyemba kwakadziva kumadokero kweWisconsin-uye yakaona kuti masensa akabudisa migumisiro yakarurama.
Vatsvagiri vacho vava kubatanidza sensor yavo yenitrate mune yakawanda inoshanda sensor system yavanodaidza kuti "sensor sticker," umo matatu akasiyana masensor akaiswa pane inochinjika epurasitiki pamusoro uchishandisa adhesive inotsigira. Iwo anonamirwa anewo humidity uye tembiricha sensors.
Vatsvaguri vanozobatanidza akati wandei anonamirwa padanda, voaisa panzvimbo dzakasiyana-siyana, vobva vaviga nzvimbo yacho muvhu. Kugadzika uku kwakavabvumira kutora zviyero pakadzika kwevhu kwakasiyana.
"Nekuyera nitrate, hunyoro uye tembiricha pakadzika kwakasiyana, tinogona ikozvino kuverenga nzira yenitrate leaching uye kunzwisisa kuti nitrate inofamba sei muvhu, izvo zvaisaita kare," Andrews akadaro.
Muzhizha ra2024, vaongorori vanoronga kuisa makumi matatu sensor tsvimbo muvhu paHancock Agricultural Research Station uye Arlington Agricultural Research Station paYunivhesiti yeWisconsin-Madison kuti vawedzere kuyedza sensor.
Nguva yekutumira: Jul-09-2024