Tekinoroji yekuona matauriro ari kure

Tekinoroji yekuona matauriro ari kure
Laserkureba kwekutaura kwekutaura: Kuburitsa chimiro cheiyo yekuona system

Iro rakatetepa laser danda rinotamba zvinoyevedza nemumhepo, richitsvaga zvinyararire kurira kuri kure, musimboti uri kuseri kweiyi futuristic tekinoroji "magic" ndeye esoteric uye izere nerunako. Nhasi, ngatisimudze chidzitiro paiyi tekinoroji inoshamisa uye tiongorore chimiro chayo chinoshamisa nemisimboti. Nheyo yelaser kure yekuona inzwi inoratidzwa muMufananidzo 1 (a). Iyo laser iri kure yekuona izwi system inoumbwa nelaser vibration yekuyera system uye isiri-yekubatana vibration yekuyera chinangwa. Zvinoenderana nekuona nzira yekudzoka kwechiedza, iyo yekuona sisitimu inogona kukamurwa kuva isiri-yekukanganisa mhando uye yekukanganisa mhando, uye dhiyabhorosi dhiyagiramu inoteerana inoratidzwa muFigure 1 (b) uye (c).

FIG. 1. (b) Schematic diagram ye-non-interferometric laser kure vibration kuyerwa system; (c) Nheyo dhiyagiramu ye interferometric laser kure vibration kuyerwa system

一. Kusina-kupindira yekuona sisitimu Kusina-kukanganisa kucherechedzwa hunhu hwakajeka hweshamwari, kuburikidza nelaser irradiation yenzvimbo yakanangwa, ine oblique kufamba kweinotaridza mwenje azimuth modulation zvichikonzera shanduko mukugamuchira kumagumo kwechiedza chakasimba kana spekle mufananidzo. kuyera zvakananga nzvimbo yakanangwa micro-vibration, uyezve "yakatwasuka" kuti uwane kure acoustic chiratidzo chekuonekwa. Maererano nechimiro chekugamuchiraphotodetector, iyo isiri-inopindira system inogona kukamurwa kuita imwe point type uye array type. Nheyo yegadziriro ye-single-point ndiyo "kuvakazve kwechiratidzo che acoustic", ndiko kuti, kudengenyeka kwepamusoro kwechinhu kunoyerwa nekuyera kushanduka kwechiedza chekucherechedza chiedza chinokonzerwa nekuchinja kwekudzoka kwechiedza chekudzoka. Iyo single-point chimiro ine zvakanakira mutengo wakaderera, chimiro chakareruka, yakakwira sampling rate uye chaiyo-nguva kuvakwazve kweacoustic chiratidzo zvinoenderana nemhinduro ye detector photocurrent, asi iyo laser speckle mhedzisiro ichaparadza mutsara hukama pakati pe vibration uye detector light intensity. , saka inorambidza kushandiswa kwe-single-point non-interference monitoring system. Iyo array chimiro inovakazve kuzunguzika kwepasi kwechinangwa kuburikidza nespekle image processing algorithm, kuitira kuti vibration yekuyera sisitimu ine kuchinjika kwakasimba kune yakakasharara nzvimbo, uye ine yakakwirira kurongeka nekunzwa.

二. Iyo yekupindira yekuona sisitimu yakasiyana neyekusina-kupindira yekuona bluntness, kupindira kwekuona kune yakawedzera kukwezva, musimboti uri kuburikidza nelaser irradiation yechiso chechinangwa, iyo inotariswa pamusoro peiyo optical axis yekutamisa kune yekumashure mwenje. inosuma chikamu / frequency shanduko, kushandiswa kwekukanganisa tekinoroji kuyera frequency shift / phase shift kuti iwane kure kure micro-vibration kuyerwa. Parizvino, tekinoroji yepamberi yekuona tekinoroji inogona kukamurwa kuita marudzi maviri zvichienderana nemusimboti welaser Doppler vibration kuyerwa tekinoroji uye laser self-mixing interference nzira yakavakirwa kure acoustic chiratidzo chekuonekwa. Laser Doppler vibration yekuyera nzira yakavakirwa paDoppler mhedzisiro yelaser kuona chiratidzo chezwi nekuyera iyo Doppler frequency shift inokonzerwa nekuzunguzika kwepamusoro pechinhu chakanangana. Iyo laser self-mixing interferometry tekinoroji inoyera kutamiswa, kumhanya, kuzunguzika uye chinhambwe chechinangwa nekubvumira chikamu chechiedza chinoratidzwa chechinangwa chiri kure kuti chipindezve mu laser resonator uye kukonzera modulation yelaser field amplitude uye frequency. Mabhenefiti ayo ari mudiki saizi uye yakakwira yekunzwa kweiyo vibration kuyerwa system, uye iyopasi simba laserinogona kushandiswa kuona chiratidzo chiri kure chekurira. A frequency-shift laser self-mixing measurement system yekuona matauriro ari kure inoratidzwa mumufananidzo 2.

FIG. 2 Schematic diagiramu ye frequency-shift laser self-mixing measurement system

Senzira inobatsira uye inoshanda yehunyanzvi, laser "magic" inotamba kure kure kutaura haigone chete mumunda wekuona, mumunda wekupikisa-yekuona zvakare ine yakanakisa kuita uye yakafara application - laser interception countermeasure tekinoroji. Iyi tekinoroji inogona kuwana 100-mita nhanho yekuvharira matanho mukati meimba, zvivakwa zvehofisi uye dzimwe nzvimbo dzegirazi rejira remadziro, uye mudziyo mumwe chete unogona kudzivirira zvinobudirira imba yemusangano ine hwindo nzvimbo ye15 square metres, mukuwedzera kune kukurumidza kupindura kumhanya kwekuongorora. uye kuisa mukati memasekonzi e10, kururamisa kwepamusoro kwepamusoro kwepamusoro pe90% yezinga rekuzivikanwa, uye kuvimbika kwepamusoro kwebasa rakagadzikana kwenguva refu. Laser interception countermeasure tekinoroji inogona kupa vimbiso yakasimba yevashandisi 'acoustic ruzivo chengetedzo mumahofisi akakosha eindasitiri uye zvimwe zviitiko.