Akupanga odana ndi kuba alamu, wanzeru anti-kuba alamu ntchito

█Mawu Oyamba

Kugwiritsa ntchito akupanga sensa monga chopatsilira ndi wolandila, ndi transmitter limatulutsa ofanana matalikidwe akupanga yoweyula ku wapezeka m'dera ndi wolandira amalandira zimanyezimiritsa akupanga yoweyula, pamene palibe kusuntha chinthu mu wapezeka m'dera, ndi kuonekera akupanga yoweyula ndi ofanana matalikidwe. . Pakakhala chinthu chosuntha kumalo ozindikira, mawonekedwe a ultrasonic wave amplitude amasinthasintha ndikusintha nthawi zonse, ndipo dera lolandira likuwona kusintha kwa chizindikiro kuti alamulire dera kuti lichite, ndiko kuti, kuyendetsa alamu. 

Alarm alamu akuba

█Working mfundo ya akupanga odana kuba alamu

Malinga ndi kapangidwe kake ndi njira unsembe amagawidwa mitundu iwiri: mmodzi ndi unsembe wa awiri akupanga transducers mu nyumba yomweyo, ndiye transceiver ndi transmitter ophatikizana mtundu, ntchito mfundo zake zachokera Doppler zotsatira za mafunde phokoso, komanso. amatchedwa mtundu wa Doppler. Pamene palibe kusuntha chinthu akulowa wapezeka m`dera, ndi ankasonyeza akupanga mafunde ndi ofanana matalikidwe. Pamene chinthu chosuntha chimalowa m'dera lomwe lapezeka, mawonekedwe a ultrasound ndi osafanana matalikidwe ndipo nthawi zonse amasintha. Mphamvu kumunda kugawa kwa anatulutsa ultrasound ali ndi zina directionality, zambiri kwa malangizo akuyang'ana dera mu elliptical mphamvu kumunda kugawa.

Enawo ndi ma transducers awiriwa amayikidwa m'malo osiyanasiyana, ndiko kuti, kulandira ndi kutumiza mtundu wogawanika, womwe umadziwika kuti chowunikira mawu, cholumikizira chake ndi cholandila nthawi zambiri chimakhala chosalozera (ie omnidirectional) transducer kapena theka-njira mtundu transducer. Transducer yosakhala yolunjika imapanga njira yogawa mphamvu ya hemispherical ndipo mtundu wa semi-directional umapanga njira yogawa mphamvu yakumunda. 

Doppler mtundu ntchito mfundo 

█Chitsanzo cha akupanga mosalekeza yoweyula chizindikiro kufala dera.

Chitsanzo cha akupanga mosalekeza yoweyula chizindikiro kufala dera 

█Malo ogwiritsira ntchito ma alamu oletsa kuba.

Ma ultrasonic detectors omwe amatha kuzindikira zinthu zomwe zikuyenda zimakhala ndi ntchito zambiri, mwachitsanzo, kutsegula chitseko chodziwikiratu ndi kutseka kuzindikira ndi kulamulira; zoyambira zonyamula zokha; chowunikira choletsa kuba, ndi zina. Khalidwe la chojambulira ichi ndikuti limatha kuweruza ngati pali nyama zogwira ntchito za anthu kapena zinthu zina zoyenda m'dera lomwe lapezeka. Iwo ali lalikulu ulamuliro circumference ndi mkulu kudalirika.