Piezoelectric Traffic Sensor bakeng sa AVC (Automatic Vehicle Classification)
Tlhaloso e Khutšoanyane:
CET8311 intelligent traffic sensor e etselitsoe ho kenngoa ka ho sa feleng kapa ka nakoana tseleng kapa tlas'a tsela ho bokella lintlha tsa sephethephethe. Sebopeho se ikhethang sa sensor se lumella hore se behoe ka ho toba ka tlas'a tsela ka mokhoa o tenyetsehang 'me kahoo se lumellane le contour ea tsela. Sebopeho se bataletseng sa sensor se hanyetsana le lerata la litsela le bakoang ke ho kobeha ha tsela, litsela tse haufi, le maqhubu a kobehang a atamelang koloing. Sekhahla se senyenyane tseleng e katiloeng se fokotsa tšenyo holim'a tsela, se eketsa lebelo la ho kenya, 'me se fokotsa boholo ba grout e hlokahalang bakeng sa ho kenya.
Lintlha tsa Sehlahisoa
Lihlahisoa tsa Enviko WIM
Li-tag tsa Sehlahisoa
Selelekela
CET8311 intelligent traffic sensor e etselitsoe ho kenngoa ka ho sa feleng kapa ka nakoana tseleng kapa tlas'a tsela ho bokella lintlha tsa sephethephethe. Sebopeho se ikhethang sa sensor se lumella hore se behoe ka ho toba ka tlas'a tsela ka mokhoa o tenyetsehang 'me kahoo se lumellane le contour ea tsela. Sebopeho se bataletseng sa sensor se hanyetsana le lerata la litsela le bakoang ke ho kobeha ha tsela, litsela tse haufi, le maqhubu a kobehang a atamelang koloing. Sekhahla se senyenyane tseleng e katiloeng se fokotsa tšenyo holim'a tsela, se eketsa lebelo la ho kenya, 'me se fokotsa boholo ba grout e hlokahalang bakeng sa ho kenya.
Monyetla oa CET8311 e bohlale ea sensor ea sephethephethe ke hore e khona ho fumana lintlha tse nepahetseng le tse ikhethileng, joalo ka lets'oao le nepahetseng la lebelo, lets'oao la trigger le tlhaiso-leseling ea likarolo. E ka fana ka maikutlo a lipalo-palo tsa tlhahisoleseding ea sephethephethe nako e telele, ka ts'ebetso e ntle, botšepehi bo phahameng le ho kenya habonolo. Ts'ebetso ea theko e phahameng, e sebelisoang haholo ho lemoha nomoro ea li-axle, wheelbase, ho hlahloba lebelo la koloi, lihlopha tsa likoloi, boima bo matla le libaka tse ling tsa sephethephethe.
Boemo ka kakaretso
Mohlala: L=1.78 limithara; Bolelele ba sensor ke limithara tse 1.82; Bolelele ka kakaretso ke limithara tse 1.94
| Bolelele ba Sensor | Bolelele bo Bonahalang ba Brass | Kakaretso Bolelele(ho kenyeletsoa le lipheletsong) |
| 6'(1.82m) | 70''(1.78m) | 76''(1.93m) |
| 8'(2.42m) | 94''(2.38m) | 100''(2.54m) |
| 9'(2.73m) | 106''(2.69m) | 112''(2.85m) |
| 10'(3.03m) | 118''(3.00m) | 124''(3.15m) |
| 11'(3.33m) | 130''(3.30m) | 136''(3.45m) |
Litekanyetso tsa tekheniki
| Mohlala No. | QSY8311 |
| Boholo ba karolo | ～3 × 7 limilimithara2 |
| Bolelele | e ka etsoa ka mokhoa o ikhethileng |
| Piezoelectric coefficient | ≥20pC/N Boleng ba lebitso |
| Insulation resistance | ＞500MΩ |
| Bokhoni bo lekanang | ～6.5nF |
| Mocheso o sebetsang | -25 ℃～60 ℃ |
| Sehokedi | Q9 |
| Borakete ea ho kenya | Hokela bracket e ntseng e hola ka sensor (thepa ea Nylon ha e sebelisoe hape). 1 pcs bracket e 'ngoe le e' ngoe ea 15 cm |
Tokisetso ea ho kenya
Khetho ea karolo ea tsela:
a) Tlhokahalo ea lisebelisoa tsa ho bekha: Ho tsitsisa nako e telele le ho ts'epahala
b) Tlhokahalo tseleng ea litsela: Ho thatafala
Mokhoa oa ho kenya
5.1 Sekoahelo sa ho khaola:
| Mehato | Setšoantšo |
| 1) Lipontšo tsa temoso ea kaho li lokela ho behoa ka pel'a sebaka sa kaho.2) Thala mohala: sebelisa theipi, pentšele ea letlapa le seliba sa enke ho hula le ho tšoaea sebaka seo sensor e behoang ho sona, hape etsa bonnete ba hore likhoele li telele ho lekana ho hokela ka thoko ho tsela. khabinete.3) Cutting slot/ Ketso ya ho seha: sebedisa sehahi ho bula sekoere groove tseleng e bapileng le mothapo wa ho tshwaya. Karolo e ka holimo-limo ea groove e lokela ho laoloa ka nepo ka har'a mefuta e boletsoeng (sheba setšoantšo ka lehlakoreng le letona). Ho ea ka bolelele ba sensor, tebisa botebo ba lipheletso tsa groove ho 50mm (ho ikamahanya le hlooho le pheletso ea sensor). 4) Ho robeha ha litsela:use hamore ho groove le ho fokotsa tlase ea groove. Botlaaseng ba groove bo lokela ho fokotsoa ka mokhoa o bonolo ka hohle kamoo ho ka khonehang. Ho ea ka setšoantšo: setšoantšo se nepahetseng le litšoantšo tsa motheo tsa kaho tse amehang. Lisebelisoa tse ka sehloohong: mochini o sehang ka matlung, hamore e nang le tšusumetso, mohoma, boro. Hlokomela: Laola botebo bo sithabetsang ba groove e ntseng e phahama. Haeba e sa teba haholo, sensor le bracket li ke ke tsa lula fatše. Haeba e tebile haholo, palo ea groute tla ba kholo. mokgoae tla ba kholo. | 1) Cross Section dimension A=20mm(±3mm)mm;B=30(±3mm)mm 2) Bolelele ba Groove Bolelele ba slot e lokela ho ba ho feta 100 ho 200 mm ea bolelele ba kakaretso ea sensor. Kakaretso ea bolelele ba sensor: i=L+165mm, L ke ea bolelele ba koporo (Sheba label). |
5.2 Mehato e hloekileng le e omeletseng
1, E le ho etsa bonnete ba hore lisebelisoa tsa lipitsa li ka kopanngoa hantle le bokaholimo ba tsela ka mor'a ho tlatsoa, sekotjana sa ho kenya se lokela ho hlatsuoa ka mochini o hloekisang khatello e phahameng, 'me bokaholimo ba groove bo lokela ho hlatsuoa ka borashe ba tšepe,' air compressor/ sethunya sa moya se nang le kgatello e phahameng kapa sefutho se sebediswa kamora ho hlwekisa ho omisa metsi.
2, Ka mor'a hore lithōle li hloekisoe, molora o phaphametseng holim'a mohaho o lokela ho hloekisoa. Haeba ho e-na le metsi a bokelletsoeng kapa mongobo o hlakileng o bonahalang, sebelisa sekontiri sa moea (sethunya sa moea se nang le khatello e phahameng) kapa blower ho se omisa.
3, Ka mor'a hore ho hloekisoe ho phethoe, tepi ea ho tiisa (bophara bo fetang 50mm) e sebelisoa
ho leba bokahodimong ba mmila ho potoloha notch ho thibela tshilafalo ho lekgoa.
5.3 Teko ea ho kenya pele
1, Bokhoni ba liteko: Sebelisa mitha e mengata ea dijithale ho lekanya kakaretso ea matla a sensor ka thapo e hoketsoeng. Boleng bo lekantsoeng bo lokela ho ba ka har'a sebaka se boletsoeng ke sensor ea bolelele bo lumellanang le leqephe la data la cable. Mefuta e fapaneng ea teko hangata e behiloe ho 20nF. Mochine o mofubelu o kopantsoe le mokokotlo oa mohala, 'me mochine o motšo o kopantsoe le thebe e ka ntle. Hlokomela hore ha ua lokela ho tšoara likhokahano ka bobeli ka nako e le 'ngoe.
2, Ho hanyetsa liteko: Lekanya khanyetso lipheletsong tse peli tsa sensor ka mitha e mengata ea dijithale. Metara e lokela ho hlophisoa ho 20MΩ. Ka nako ena, ho bala oacheng ho lokela ho feta 20MΩ, hangata e bonts'itsoeng ke "1".
5.4 Lokisa borakete e ntseng e hola
| Mehato | Setšoantšo |
| 1) Hlakola sensor 'me u hlahlobe hore na kutlo e ntse e tiile. Otlolla kutlo ho boloka kutlo e otlolohile ebile e bataletse.2） Bula bracket e ntseng e hola ka lebokoseng ebe u kenya bracket haufi le sensor ka nako e ka bang 15cm.3) Beha bracket e ntseng e hola hammoho le sensor. ka sekoting sa ho seha. Bokaholimo ba masaka kaofela bo ka ba 10mm ho tloha holim'a tsela. 4） Koba pheletsong ea sensor tlase 40 °, koba lenonyeletso tlase 20 °, ebe u e kobehela 20 ° ho ea holimo. |  Boemo
|
5.5 Kopanya grout
Tlhokomeliso: Ka kopo bala litaelo tsa grout ka hloko pele u kopanya.
1）Bula potting grout, ho latela lebelo la ho tlatsa le tekanyo e hlokahalang, e ka etsoa ka bongata bo fokolang empa ka makhetlo a 'maloa ho qoba litšila.
2) Lokisetsa palo e nepahetseng ea potting grout ho latela karo-karolelano e boletsoeng, 'me u tsose ka ho lekana ka hamore ea motlakase (hoo e ka bang metsotso e 2).
3) Kamora ho itokisa, ka kopo sebelisa nako ea metsotso e 30 ho qoba ho tiea ka nkhong.
5.6 Mehato ea pele ea ho tlatsa grout
1) Tšela grout ka ho lekana ho latela bolelele ba groove.
2) Ha o tlatsa, koung ea drainage e ka etsoa ka letsoho ho thusa ho laola lebelo le tataiso nakong ea ho tšela. E le ho boloka nako le matla a 'mele, e ka tšeloa ka lijana tse nyenyane tsa bokhoni, tse loketseng hore batho ba bangata ba sebetse ka nako e le' ngoe.
3）Tlatso ea pele e lokela ho ba libaka tse tlatsitsoeng ka botlalo, 'me e etse hore bokaholimo ba grout bo phahame hanyane ho feta tsela.
4) Boloka nako ka hohle kamoo ho ka khonehang, ho seng joalo grout e tla tiisa (sehlahisoa sena se na le nako e tloaelehileng ea ho folisa ea 1 ho lihora tsa 2).
5.7 Mehato ea bobeli ea ho tlatsa grout
Kamora hore grouting ea pele e folisoe, sheba bokaholimo ba grout. Haeba bokaholimo bo le tlase ho feta tsela kapa bokaholimo bo kobehile, kopanya grout (sheba mohato oa 5.5) 'me u etse ho tlatsa ha bobeli.
Ho tlatsoa ha bobeli ho lokela ho etsa bonnete ba hore bokaholimo ba grout bo batla bo le ka holim'a tsela.
5.8Ho sila ka holim'a metsi
Ka mor'a ho kenya mohato oa 5.7 o phethoa ka halofo ea hora, 'me grout e qala ho tiea, e hahola litheipi mahlakoreng a li-slots.
Kamora ho kenya mohato oa 5.7 ho phetheloa hora e le 1, 'me grout e tiisitsoe ka botlalo, sila
grout ka sesilara sa angle ho etsa hore se be monate le bokahodimo ba tsela.
5.9 Ho hloekisa setšeng le tlhahlobo ea kamora ho kenya
1) Hloekisa masalla a grout le lithōle tse ling.
2) Teko ka mor'a ho kenya:
(1) Teko ea bokhoni: sebelisa mitha e mengata ea dijithale ho lekanya kakaretso ea matla a sensor ka mohala o kentsoeng. Boleng bo lekantsoeng bo lokela ho ba ka har'a sebaka se boletsoeng ke sensor ea bolelele bo lumellanang le leqephe la data la cable. Mefuta e fapaneng ea teko hangata e behiloe ho 20nF. Mochine o mofubelu o kopantsoe le mokokotlo oa mohala, 'me mochine o motšo o kopantsoe le thebe e ka ntle. Hlokomela hore u se ke ua tšoara likhokahano tse peli ka nako e le 'ngoe.
(2) Ho hanyetsa teko: sebelisa mitha e mengata ea digital ho lekanya khanyetso ea sensor. Metara e lokela ho hlophisoa ho 20MΩ. Ka nako ena, ho bala oacheng ho lokela ho feta 20MΩ, hangata e bonts'itsoeng ke "1".
(3) Teko ea pele ho mojaro: kamora hore sebaka sa ho kenya se hloekisoe, kopanya tlhahiso ea sensor ho oscilloscope. Boemo bo tloaelehileng ba oscilloscope ke: Voltage 200mV/div, Nako 50ms/div. Bakeng sa lets'oao le nepahetseng, motlakase oa trigger o behiloe ho hoo e ka bang 50mV. Moetso o tloaelehileng oa teraka le koloi o bokelloa e le tlhahlobo ea waveform ea teko pele ho mojaro, ebe mofuta oa wave oa teko oa bolokoa ebe oa kopitsoa hore o hatisoe, ebe o bolokoa ka ho sa feleng. Sephetho sa sensor se itšetlehile ka mokhoa oa ho kenya, bolelele ba sensor, bolelele ba thapo le lisebelisoa tsa pitsa tse sebelisitsoeng. Haeba tlhahlobo ea preload e tloaelehile, ho kenya ho phethehile.
3) Ho lokolloa ha sephethephethe: litlhaloso: Sephethephethe se ka lokolloa feela ha thepa ea pitsa e phekoloa ka ho feletseng (lihora tse ka bang 2-3 ka mor'a ho tlatsa ho qetela). Haeba sephethephethe se lokolloa ha thepa ea potting e sa phekoloe ka ho feletseng, e tla senya ho kenngoa le ho etsa hore sensor e hlōlehe pele ho nako.
Kenya tlhahiso ea waveform ea teko pele
2 Lilepe
3 Lilepe
4 Lilepe
6 Lilepe
Enviko esale a sebetsa ka thata ho Weigh-in-Motion Systems ka lilemo tse fetang 10. Li-sensor tsa rona tsa WIM le lihlahisoa tse ling li tsebahala haholo indastering ea ITS.
