Lethathamo la lintlha tsa ST VL53L5CX Tanging sensor
Litaelo bakeng sa khalase e koahelang ea VL53L5CX Nako ea Sefofane ea 8 × 8 sensor ea multizone e nang le sebaka se pharaletseng sa view
Selelekela
Sepheo sa molaetsa ona oa kopo ke ho fana ka litataiso tsa moralo oa indasteri le mokhoa oa ho lekola boleng ba khalase e koahelang. E qaqisa likhothaletso tsa ST mabapi le khetho ea likhalase tsa sekoaelo le litlhoko tsa moralo bakeng sa ho fokotsa moqoqo le ho ntlafatsa sistimi.
Lintlha tse akaretsang
VL53L5CX ke nako ea ho fofa (ToF) 8 × 8 multizone sensor e nang le tšimo e pharaletseng ea view (FoV).
Khalase e koahelang hangata ke fensetere e sa bonahaleng e nang le lera le koahelang le hlahisang liphahlo ho lumella ho tsoa le ho amohela leseli la IR. Li-apertures e ka ba lesoba le le leng la oval kapa tse peli tse chitja. Hangata likhalase tsa sekoahelo li koahetsoe ka filimi ea filthara eo hangata e behiloeng ka tlas'a fensetere.
Khalase e koahelang e sebeletsa merero e 'meli e meholo:
- tšireletso ea 'mele ea sesebelisoa, ho kenyelletsa le ho thibela lerole ho kena
- ho tlhotla ka mahlo
Khalase e khurumetsang e ka boela ea sebelisoa molemong oa botle. Ka lebaka lena, holim'a lera la ho roala, hoa khoneha ho etsa likoti tse peli tse lekanang, tse behiloeng ka holim'a mochine o fetisang le moamoheli. Leha ho le joalo, lesoba la moamoheli le ka etsoa le le nyane ha ho hlokahala (sheba Karolo ea 4 Ho koahela litataiso tsa mochini oa likhalase bakeng sa lintlha tse ling).
Setšoantšo sa 2. Litsela tsa bohlokoa tsa Crosstalk li hlahisa tsamaiso ea VL53L5CX ka mokhoa o tloaelehileng oa kopo. Khalase ea sekoahelo e behoa ka holim'a mojule 'me ho setse sebaka pakeng tsa tse peli. Sebaka sena ka kakaretso se bitsoa lekhalo la moea 'me se lekantsoe ka mm. Lintlha tsa liteko li bonts'a hore ho eketsa boholo ba lekhalo la moea ho lebisa keketsehong ea:
- lets'oao la crosstalk
- tahlehelo ea sesupo
Sisteme crosstalk
VL53L5CX ke sesebelisoa se nang le FoV e pharaletseng e lumellang kamohelo e phahameng ea matšoao ho tsoa ho sepheo. Ka nako e ts'oanang, lets'oao la crosstalk le teng ka har'a sehlopha sa moamoheli .The crosstalk e hlalosoa e le leseli le tsoang ho emitter ea module mme e sa bonahatsoe ke sepheo, empa seo se latela litsela tse ling, tse sa rateheng ho fihlela moamoheli. Ka lebaka lena, lets'oao la crosstalk ha le tlise tlhahisoleseling efe kapa efe ea bohlokoa ho tsoa ho sepheo (joalo ka bohole le ponahalo), 'me e tlameha ho fokotsoa. Tsela ea crosstalk optical e khuts'oane, kahoo phallo ea crosstalk e bonahala e le haufi le sebaka sa zero / tieho. Palo ea crosstalk e ipapisitse le tlhophiso ea optical, sekoaelo sa jiometri ea khalase le thepa. Crosstalk e ka boela ea fapana nakong ea bophelo ba sehlahisoa ka lebaka la likhahla kapa litšila holim'a khalase ea sekoahelo.
Setšoantšo sa 2. Litsela tsa bohlokoa tsa Crosstalk
Setšoantšo se ka holimo se totobatsa litsela tse tloaelehileng tsa optical tseo leseli, le thunngoeng ke emitter, le ka li latelang pele le fihla ho sehlopha sa moamoheli.
Litsela tse kholo tse emetsoeng ke:
- tsela ea ponts'o, e tšoailoeng ka 1 setšoantšong se kaholimo
- tsela ea pontšo ea crosstalk ka har'a khalase e koahelang, e tšoailoeng ka 2 setšoantšong se ka holimo
- tsela ea pontšo ea crosstalk ka hare ho lekhalo la moea, le tšoailoeng ka 3 setšoantšong se ka holimo
Sepheo sa moralo oa ho qetela oa ts'ebeliso ke ho fokotsa matšoao a crosstalk le ho matlafatsa lets'oao le lebisitsoeng ho qoba litšitiso leha e le life kapa ho fokotseha tseleng ea lona.
Ka kakaretso, pontšo ea crosstalk e eketseha ka botenya ba khalase ea sekoahelo. Ho fokotsa lets'oao la crosstalk, ho khothaletsoa ho sebelisa khetho ea khalase ea sekoaelo sa thinnest e fumanehang. Ho senya tsela ea crosstalk e jalang ka khalase ea sekoahelo, ho kgothaletswa ho sebelisa light-blocker joalokaha ho bontšitsoe setšoantšong se ka tlase.
Letšoao la crosstalk le fokotseha ha boholo ba lekhalo la moea le fokotseha, bona Karolo ea 6 ea Qetello le tafole ea kakaretso bakeng sa lintlha tse ling. Ka hona, ho khothalletsoa ho ba le lekhalo le lenyenyane ka ho fetisisa la moea le ka khonehang.
Ho senya tsela ea crosstalk e jalang ka lekhalo la moea ho kgothaletswa ho sebelisa gasket. Lintho tse khethehileng tse lefifi tse kang neoprene li ka behoa bohareng ba sebaka sa lekhalo la moea ho senya tsela ea khanya ea crosstalk (Yoder, PR, Opto-Mechanical Systems Design, 3rd Ed., CRC Press, 2006 le Harris, DC, Lisebelisoa tsa likhalase tsa Infrared le Domes, Properties and Performance, SPIE Press, Bellingham, 1999).
Bakeng sa likheo tsa moea> 0.7 mm, ho hlokahala gasket ho etsa bonnete ba hore boemo ba pontšo ea crosstalk bo bolokoa ka tlase ho tekanyo e phahameng e khothalletsoang ea 100 kcps.
Phello ea crosstalk e na le litlamorao tse 'maloa tse mpe, joalo ka keketseho ea:
- tahlehelo ea sesupo
- ho qala ka ho se lekane
- ho tloha ho kgeloha ho tloaelehileng
Ho feta moo, letšoao la crosstalk le itšetlehile ka mocheso hammoho le letšoao la sepheo. Ka kakaretso, pontšo ea crosstalk e eketseha ka ho phahama ha mocheso.
Setšoantšo sa 3. Kopo ea ho qetela ea VL53L5CX
VL53L5CX crosstalk immune immune
Ho rua molemo ts'ebetsong e felletseng ea sesebelisoa, mokhanni oa VL53L5CX o kenyelletsa ts'ebetso ea calibration e inehetseng ho puseletso ea crosstalk. The crosstalk calibration e tlameha ho tsamaisoa hang mocheng oa tlhahiso ea bareki. Ts'ebetso ena ea ho lekanya e tlameha ho etsoa ho lefella likhalase tse koahelang karolo le karolo tse ka amang tšebetso ea sesebelisoa. Lintlha tsa calibration tse bolokiloeng ho moamoheli li tlameha ho kenngoa mojuleng oa VL53L5CX qalong e 'ngoe le e' ngoe ho sebelisa matšeliso a crosstalk ho litekanyo tse fumanoeng. Lintlha tsa calibration li ka kenngoa feela mojuleng oa VL53L5CX ka ho sebelisa ts'ebetso ea mokhanni ea inehetseng.
Koahela moralo oa khalase
Letšoao la crosstalk le na le maikutlo a matle haholo ho moralo oa khalase ea sekoaelo le sebopeho. Thepa ea tlhahiso ea khalase e koahelang e ama liketsahalo tsa ho hasana ha leseli mme ka lebaka leo crosstalk e bonts'itsoe setšoantšong se ka tlase. Mohlala, likaroloana le likoli tsa kristale tse kentsoeng ka har'a khalase ea sekoaelo li eketsa ho hasana ha leseli. Ka mokhoa o ts'oanang, sekoaelo sa khalase holim'a topography le bokaholimo ba bokaholimo bo ama crosstalk.
E le ho qoba phello ea ho hasanya le ho fokotsa lets'oao la crosstalk, khalase e koahelang e lokela ho etsoa hore e be le:
- ha ho na mefokolo mohahong oa kristale kapa ka holim'a lera la holim'a metsi
- ha ho ditshila kapa ho kgeloha kahare ho sebopeho
- ha ho na litšila kapa lintho tse entsoeng ka holimo
Setšoantšo sa 4. Ho hasana ha leseli exampho fokola ka baka la bofokodi ba ka hare kapa makgwakgwa a bokahodimo
phetiso Optical
Ho tloha sebakeng sa optical ea view, khalase ea sekoahelo e tlameha ho lumella ho fetisoa ha leseli la IR le hlahisoang ke mojule VCSEL ho 940 nm le 1.6 nm ka bophara bo feletseng ka halofo ea boholo (FWHM), 'me e amoheloa ke sehlopha sa SPAD se kentsoeng ka har'a mojule. Hoa hlokahala ho ba le phetiso ea optical ea khalase e koahelang holimo ho feta 87% ho bandwidth ena.
Tafole e ka tlase e bonts'a kholo e hakantsoeng ea sebaka se phahameng sa ho tloha phetisong:
Lethathamo la 1. Phetoho ea sebaka se phahameng sa ho fapana
| Phetiso [%] | Khakanyo ea boholo ba sebaka sa ho fapana [mm] (1) |
| 100 | 4000 limilimithara |
| 90 | 3800 limilimithara |
| 80 | 3600 limilimithara |
| 70 | 3400 limilimithara |
| 50 | 3000 limilimithara |
| 20 | 2400 limilimithara |
Example ea 4 × 4 mokhoa, maemo a lefifi, ponahalo e tšoeu ea 88%, maqhubu a 30 Hz a fapaneng, ka litlhophiso tsa mokhanni oa kamehla.
Lits'oants'o tsohle tse sa fetisoeng ke khalase ea sekoaelo li lahlehile kapa li ka fetoha crosstalk. Tahlehelo ea
lets'oao le ama ka kotloloho ts'ebetso ea mojule oa VL53L5CX, le sebaka se phahameng sa ho fapana. Ho kgothaletswa hore ho be le phetisetso e phahameng ka ho fetisisa ya sekwahelo sa kgalase e kgonehang.
Koahela khalase ea ho roala
Hangata likhalase tsa sekoahelo li koahetsoe ka lisebelisoa tse fapaneng bakeng sa merero e fapaneng.
- Enke e mebala ka mabaka a botle
- Filter ea IR ho khaola mabone ohle a sa batleheng phetisong ea IR. Ka tloaelo ho roala filthara ho kenngoa ka lehlakoreng le ka morao la fensetere.
- ARC: Coat e thibelang ho bonahatsa ho fokotsa ponahalo ea bokaholimo.
- AFC: koae e khahlanong le menoana ho eketsa tšireletso ea menoana.
Ke habohlokoa ho hlokomela hore ho roala ka holimo ho ka hlahisa matšoao a eketsehileng a crosstalk. Ha e le hantle, lera leha e le lefe le fetisoang le behiloeng holim'a khalase e koahelang e ka sebetsa e le tsela ea optical ho tataisa lebone la crosstalk ho tloha ho emitter ho ea ho moamoheli.
Hlokomela:
Nako le nako ha ho khoneha, qoba ho sebelisa khalase e koahelang, bonyane libakeng tse sa kenyelletsoeng tse hlalositsoeng Karolong ea 4. Ho khothaletsoa ho sebelisa liphahlo tse ka ntle tse sa fokoliseng tšireletso ho menoana (mohlalaample, anti-fingerprint kapa anti-reflective coatings tse nang le anti-fingerprint feature) molemong oa ho fokotsa litlamorao tse mpe kapa tahlehelo ea lets'oao.
Haze
Haze e hlalosoa e le peresentetage ea khanya eo, ha e feta har'a thepa e itseng, e fapohang ho sehlaseli sa ketsahalo, ka karolelano, ka angle e kholo ho feta likhato tse 2.5.
Letšoao la crosstalk le eketseha ka liteko ka lisekoere tsa peresente ea moholi. Ho khothalletsoa ho ba le moholi o ka tlase ho 2% ea khanya eohle e hlahisoang (1%, 940 nm IR).
Koahela ho sekama ha khalase le ho bapisa holimo
Khalase e koahelang bokaholimo le bokaholimo bo tlamehang ho bapelana le bokaholimo ba sesebelisoa. Ha e le hantle, ho sekama ha khalase ho tlameha ho qojoa ho fokotsa matšoao a crosstalk.
Haeba litšitiso tsa mochini li hloka ho sekamisa sesebelisoa, mosebelisi o tlameha ho etsa bonnete ba hore crosstalk e kholo e ka tlase ho 100 kcps. Sekepe se phahameng se khothalelitsoeng se fanoe ho Lethathamo la 4. Litaelo tsa likhalase tse koaheletsoeng le tafole ea kakaretso.
Koahela lisebelisoa tsa khalase
Boitsebiso bo le bong bo buelloa bakeng sa moralo oa khalase ea sekoahelo; lisebelisoa tse ngata li ka fetola ts'ebetso kapa tsa eketsa phello ea ho hasanya ha leseli ka hare. Lintlha tse khothalelitsoeng ke:
- Khalase
- Khalase ea safire
- Polymethyl methacrylate (PMMA)
- Polycarbonate
Koahela litataiso tsa mochini oa khalase
Karolo ena e fana ka tlhahisoleseding e mabapi le VL53L5CX litekanyo tsa geometrical tse hlokahalang ho bala litekanyo tse fokolang tsa aperture ea sekoahelo sa khalase ea khalase. Sheba setšoantšo se ka tlase.
- Mochine o amohelang mochine o chitja ka bophara ba 0.51 mm (sebaka sa 0.4086 mm2).
- Mochini oa emitter o na le khutlonnetsepa ka bophara ba 0.72 mm le bophahamo ba 0.80 mm (sebaka.
0.576 limilimithara2). - Sebaka se pakeng tsa setsi sa optical emitter le setsi sa optical receiver ke 4 mm joalokaha ho tlalehiloe setšoantšong se ka tlase.
- Ke boikhethelo ho ba le lesoba le le leng le leholo le koahelang khalase kapa marobalo a mabeli a arohaneng. Qeto ea ho qetela ke ea bokhabane, karolo e itseng e sebetsa. Li-apertures tse peli li ka fana ka tšireletso e ntle ea crosstalk, haholo-holo meralong e se nang gasket.
Hlokomela:
Ho bohlokoa ho hokahanya li-apertures le litsi tsa optical tsa VCSEL, joalo ka ha ka holimo. Ha li tšoane le litsi tsa mechine. Lintlha tse ling tsa mochini li ka fumanoa ho database.
Ho rala litekanyo tsa ho qetela, qalong ho nahanoa hore e na le li-apertures tse khutlonnetsepa tse nang le boholo mona tse bitsoang aR, bR ka lehlakoreng la moamoheli, le aT, bT ka lehlakoreng la transmitter. Li-diagonal tsa likhutloane tsena li emela li-diagonal, tseo mona li bitsoang dR le dT, tsa li-apertures tse chitja tse entsoeng ka sekoahelo sa khalase. Li-apertures tse koahelang khalase li tsamaisana le li-apertures tsa module ka ho tsepamisa maikutlo (bona setšoantšo se ka tlase).
Setšoantšo sa 7. Examplesela la sekoaelo sa khalase se nang le lesoba le le leng
Ho tseba "mojule" oa "mojule" oa VL53L5CX, 61º ka y directional le 55.5º ka x directional (bakeng sa lintlha tse ling, sheba setšoantšo sa VL53L5CX), hoa khoneha ho bala likheo tse nyane tsa khalase ea sekoaelo u sebelisa tse latelang. formulae. Sheba lipalo tse ka tlase e le litšupiso tsa lipalo.
Setšoantšo sa 8. Koahela khalase Tx aperture ka x direction
aT, e tsamaellanang le khoune ea ho khaolla ea 55.5º, e ka baloa ka mokhoa o latelang.
Ka mokhoa o ts'oanang bT, e tsamaellanang le 61 ° ea khoune ea ho kenyelletsa mokelli, e ka baloa ka tsela e latelang.
Bophara ba selikalikoe se pota-potiloeng se koahelang sebaka se nang le khutlonnetsepa fensetereng ea sekoaelo se ka baloa ka tsela e latelang:
Mekhoa e tšoanang e ka ngolloa lehlakoreng la Rx, e nkela sebaka sa TxPyramidApex e fetileng = 0.63 mm le RxPyramidApex = 0.45 mm. Ha u sebelisa fensetere e khurumetsang e nang le lesoba le le leng (sheba Setšoantšo sa 7. Example ea sekoahelo sa khalase e nang le lesoba le le leng), litekanyo tse peli tsa lesoba li bitsoa W (bophara) le L (bolelele). Ho eketsa mamello ea t = 200 µm lehlakoreng ka leng la mojule, hoa khoneha ho bala W ka tsela e latelang.
Ka ho sebelisa dT, hobane e kholo ho feta dR, hoa khoneha ho bala L ka foromo e latelang.
Letlapa la 2. Palo ea likhalase tse koaheletsoeng e tlaleha liphetho tsohle tse baloang ho sebelisoa litekanyo tse fapaneng tsa lekhalo la moea tse fanoeng kholomong ea pele.
Letlapa 2. Koahela likhalase dimension calculation
| lekhalo la moea | aT | bT | dT | aR | bR | dR | W | L |
| 0 | 1.1890 | 1.3312 | 1.7849 | 0.9996 | 1.1192 | 1.5006 | 6.0428 | 2.1849 |
| 0.15 | 1.3469 | 1.5080 | 2.0219 | 1.1575 | 1.2959 | 1.7376 | 6.2797 | 2.4219 |
| 0.2 | 1.3995 | 1.5669 | 2.1009 | 1.2101 | 1.3548 | 1.8165 | 6.3587 | 2.5009 |
| 0.3 | 1.5047 | 1.6847 | 2.2588 | 1.3153 | 1.4726 | 1.9745 | 6.5167 | 2.6588 |
| 0.4 | 1.6099 | 1.8025 | 2.4168 | 1.4205 | 1.5904 | 2.1325 | 6.6746 | 2.8168 |
| 0.5 | 1.7152 | 1.9203 | 2.5747 | 1.5258 | 1.7082 | 2.2904 | 6.8326 | 2.9747 |
| 0.8 | 2.0308 | 2.2737 | 3.0486 | 1.8414 | 2.0617 | 2.7643 | 7.3065 | 3.4486 |
| 1 | 2.2413 | 2.5093 | 3.3645 | 2.0519 | 2.2973 | 308002 | 7.6224 | 3.7645 |
Litekanyo li nka botenya ba khalase ea sekoaelo 0.5 mm mme boholo bo boletsoeng bo ka lehlakoreng le ka holimo la khalase.
Palo ena e kenyelletsa 2º ea mamello ea angular (θtolerance) ho phaella ho cone ea ho kenyelletsa mokelli (sheba setšoantšo se ka tlase), joale liphetho tsa lipalo li tlalehoa ho Lethathamo la 3. Koahela lipalo tsa khalase ka mamello ea 2 degree.
Setšoantšo sa 10. Koahela khalase Tx aperture e nang le mamello ea angle ka x direction
Letlapa la 3. Koahela lipalo tsa khalase ka mamello ea 2 degree
| lekhalo la moea | aT | bT | dT | aR | aR | bR | dR | W | L |
| 0 | 1.2399 | 1.3849 | 1.8589 | 1.1643 | 1.0424 | 1.1643 | 1.5628 | 6.1108 | 2.2589 |
| 0.15 | 1.4045 | 1.5688 | 2.1056 | 1.3482 | 1.2070 | 1.3482 | 1.8095 | 6.3576 | 2.5056 |
| 0.2 | 1.4593 | 1.6301 | 2.1879 | 1.4094 | 1.2618 | 1.4094 | 1.8918 | 6.4398 | 2.5879 |
| 0.3 | 1.5690 | 1.7526 | 2.3524 | 1.5320 | 1.3715 | 1.5320 | 2.0563 | 6.6043 | 2.7524 |
| 0.4 | 1.6788 | 1.8752 | 2.5169 | 1.6546 | 1.4813 | 1.6546 | 2.2208 | 6.7688 | 2.9169 |
| 0.5 | 1.7885 | 1.9977 | 2.6814 | 1.7771 | 1.5910 | 1.7771 | 2.3853 | 6.9333 | 3.0814 |
| 0.8 | 2.1177 | 2.3654 | 3.1749 | 2.1448 | 1.9202 | 2.1448 | 2.8788 | 7.4268 | 3.5749 |
| 1.0 | 2.3371 | 2.6105 | 3.5039 | 2.3899 | 2.1396 | 2.3899 | 3.2078 | 7.7558 | 3.9039 |
Litekanyo li nka botenya ba khalase ea sekoaelo 0.5 mm mme boholo bo boletsoeng bo ka lehlakoreng le ka holimo la khalase.
Haeba fensetere ea sekoahelo e sa bapisoe le VL53L5CX holim'a mojule oa VLXNUMXLXNUMXCX, joale sekontiri se itseng kapa moqolo o ka hlaha joalo ka ha ho bonts'itsoe setšoantšong se ka tlase.
Setšoantšo sa 12. Koahela sekontiri sa khalase kapa ho potoloha ha moqolo
Haeba fensetere ea sekoahelo e potoloha, boholo le sebopeho sa li-apertures li fetoha joalo ka ha ho bontšitsoe ka tlase, 'me li tlameha ho baloa bocha.
Palo e ka fanoa ka tokomane e arohaneng haeba ho hlokahala. Ikopanye le ofisi ea hau ea tšehetso ea bareki ea ST bakeng sa lintlha tse ling.
Setšoantšo sa 13. Libopeho tsa sekoti tse nang le likhalase tse pota-potileng
Matšeliso a Crosstalk
- Matšeliso a Crosstalk ke karolo e kentsoeng ho firmware ea VL53L5CX. E lumella matšeliso a phello ea crosstalk, e ipapisitseng le liphetho tsa sebopeho le data ea calibration. Ts'ebetso ea sebopeho sa crosstalk e hlalositsoe bukeng ea mosebelisi ea VL53L5CX (UM2884).
- Ka kakaretso, ha crosstalk e le tlase, ho bonolo ho e lefella. Ho feta moo, phapang e fokolang ea crosstalk ka lebaka la smudge kapa haze, ho ba bonolo ho lefa tšimong.
- Khalase e koahelang e nang le moralo o fosahetseng kapa tlhahiso e eketsa boemo ba crosstalk. Ka mokhoa o ts'oanang, moholi kapa moholi o ka holim'a khalase ea sekoaelo e theola sekhahla sa lets'oao la sepheo sa vs crosstalk.
- Setšoantšo se ka tlase se bontša example sebaka se fapaneng tabeng ea maemo a phahameng a crosstalk. Sebaka se fapaneng se tlalehoa ha se bapisoa le sebaka seo u se batlang. Sena se bolela hore mola o nang le dashed o emela lekhalo le loketseng moo phoso e qalang e leng zero. Ha lets'oao la crosstalk le phahame, lets'oao le leholo le angoang sebakeng se khuts'oane.
Setšoantšo sa 14. Range vs target distance bakeng sa boemo bo phahameng ba crosstalk
Setšoantšo se latelang se bontša example sebaka se fapaneng tabeng ea maemo a tlase a lets'oao la crosstalk. E bontsha
hore puseletso ea crosstalk e na le phello e fokolang holim'a moeli oa lets'oao le fapaneng libakeng tse khutšoane. Phoso ea mefuta e oela ho zero ha sebaka se shebiloeng se le seholo ho feta sebaka sa tšireletso ea crosstalk, eo hajoale e leng ~ 600 mm bakeng sa VL53L5CX.
Setšoantšo sa 15. Range vs target distance bakeng sa boemo bo tlase ba crosstalk
Li-gaskets
Li-gaskets li fokotsa ho kopana pakeng tsa lets'oao la 'nete le lipontšo tse fosahetseng tse tsoang lets'oao le fetisoang. Gasket e loketseng e lokela ho ba e lekaneng ho tlatsa lekhalo le feletseng la moea pakeng tsa sesebelisoa le khalase ea sekoahelo. Gasket e lokela ho ba le li-apertures tse peli tse kholo ka ho lekaneng ho lumella Tx kapa Rx cone e feletseng hore e fete ka ntle ho tšitiso, ha e ntse e etsa mokoallo oa leseli pakeng tsa litsela tsa Rx le Tx. Gasket e lokela ho koahela sebaka se seholo pakeng tsa likanale tsa Rx le Tx tse ka khonehang ntle le ho thibela libaka tsa ho boloka.
Sephetho le kakaretso tafole
- Boholo ba lekhalo la moea le thepa ea khalase e koahelang li susumetsa boemo ba matšoao a crosstalk.
- Liphetho tsa liteko li bonts'a hore <0.4 mm lekhalo la moea le khothalelitsoe. Haeba ho sebelisoa lekhalo le leholoanyane la moea, joale ho ka hlokahala gasket ho fokotsa crosstalk.
- Lintlha tsa khothatso ea likhalase tsa sekoahelo li tlalehiloe tafoleng ea kakaretso e ka tlase.
Letlapa la 4. Koahela tataiso ea khalase le tafole ea kakaretso
| Paramethara | Litlhahiso tse khothalelitsoeng bakeng sa litšoantšiso tse ngata | ||
|
Paramethara Optical |
Boemo bo phahameng ba lets'oao la crosstalk le amohetsoe | 100 kcps (boholo) | |
| Phetiso ho 940 nm | >87% | ||
| Moholi o fetisang (bonahala) | <2% | ||
| Moholi o fetisang (IR) | <1% | ||
|
Mochini oa parameter |
Lekhalo la moea(1) | Ntle le gasket | <0.4 limilimithara |
| Lekhalo la moea + koahela botenya ba khalase | <1.5 limilimithara | ||
| Koahela khalase e sekame | ±10°(2) | ||
| Palo ea likheo tsa likhalase tse koahelang | Likoti tse peli tse chitja li khetha ho sireletsa leraba le khanyang | ||
- Lekhalo le ntseng le eketseha la moea le ka eketsa crosstalk. Crosstalk e ka fokotsoa ka tšebeliso ea gasket. Likheo tsa moea <0.4 mm li boloka lipuisano li le ka tlase ho meeli e khothaletsoang. Likheo tsa moea> 0.7 mm li hloka hore gasket e lule ka har'a moeli oa 100 kcps crosstalk.
- Mamello ea kopano ke ±2º
Hlokomela:
Lipalo tse ka holimo ke tsa khalase ea sekoahelo sa ho qetela ho kenyelletsa le liphahlo tse kentsoeng.
Bakeng sa khalase e khethehileng e koahelang li-turnkey e entsoeng ke motho oa boraro, ikopanye le ofisi ea hau ea thekiso ea ST.
Acronyms le khutsufatso
Lethathamo la 5. Akhronimi le khutsufatso
| Kgutsufatso/ khutsufatso | Tlhaloso |
| AFC | anti-fingerprint coating |
| ARC | anti reflective coating |
| cps | palo ea foto ka motsotsoana |
| FoV | tšimo ea view |
| FWHM | bophara bo felletseng ka halofo ea boholo |
| IR | infrared |
| PMMA | polymethyl methacrylate |
| Rx | moamoheli |
| SEPAPA | single photon avalanche diode |
| ToF | Nako-ea-Sefofane |
| Tx | mofetisi |
| VCSEL | lesela la paa-lephako le ntšang metsi |
Nalane ea ntlafatso
Lethathamo la 6. Histori ea ntlafatso ea litokomane
| Letsatsi | Phetolelo | Liphetoho |
| 21-Nov-2022 | 1 | Tokollo ea pele |
TSEBISO EA BOHLOKOA – BALA KA HLOKO
STMicroelectronics NV le li-subsidiary tsa eona ("ST") li na le tokelo ea ho etsa liphetoho, litokiso, lintlafatso, lintlafatso, le lintlafatso ho lihlahisoa tsa ST le/kapa tokomaneng ena ka nako efe kapa efe ntle le tsebiso. Bareki ba lokela ho fumana lintlha tsa morao-rao tse amanang le lihlahisoa tsa ST pele ba fana ka litaelo. Lihlahisoa tsa ST li rekisoa ho latela lipehelo le maemo a thekiso ea ST ka nako ea tumello ea taelo. Bareki ke bona feela ba ikarabellang bakeng sa khetho, khetho, le tšebeliso ea lihlahisoa tsa ST mme ST ha e nke boikarabello bakeng sa thuso ea kopo kapa moralo oa lihlahisoa tsa bareki Ha ho laesense, e hlakisitsoeng kapa e boletsoeng, tokelong efe kapa efe ea thepa ea mahlale e fanoeng ke ST mona. Ho rekisoa ha lihlahisoa tsa ST ka litokisetso tse fapaneng le tlhahisoleseding e boletsoeng mona ho tla hlakola waranti leha e le efe e fanoeng ke ST bakeng sa sehlahisoa se joalo. ST le logo ea ST ke matšoao a khoebo a ST. Bakeng sa lintlha tse ling mabapi le matšoao a khoebo a ST, sheba ho www.st.com/trademarks. Mabitso a mang kaofela a lihlahisoa kapa litšebeletso ke thepa ea beng ba tsona. Lintlha tse tokomaneng ena li nkela sebaka le ho nkela tlhahisoleseding e neng e fanoe pele liphetolelong tsa pele tsa tokomane ena.
© 2022 STMicroelectronics – Litokelo tsohle li sirelelitsoe
Litokomane / Lisebelisoa
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Lethathamo la lintlha tsa ST VL53L5CX Tanging sensor [pdf] Bukana ea Mosebelisi VL53L5CX, Tanging Sensor module, VL53L5CX Tanging Sensor module, Sensor Module, AN5856 |
