Te Mārama ki te Tikanga Iti o ngā Mita Rererangi Ultrasonic Doppler

Doppler ngā mita rere ultrasonicwhaii kitea ngā whakamahinga i roto i te whānuitanga o ngā ahumahi mō te ine rere. Heoi, ki te whakaritea ki ētahi atu hangarau ine rere, he iti noa te tika o ēnei hangarau. Ka rukuhia e tēnei tuhinga ngā āhuatanga matua e whai wāhi ana ki tēnei take.

Ngā mita rere orooro Dopplerrely mō te aroaro o ngā matūriki whakaata i roto i te wai e inehia ana. Mō ngā inenga tika, me nui, me ōrite hoki te kukū o ngā matūriki. I roto i ngā āhuatanga o te ao tūturu, he uaua te pupuri i te tohatoha matūriki ōrite. Hei tauira, i roto i ngā tipu maimoatanga wai, ka rerekē te kukū o ngā matūriki iri i runga i te wāhanga o te tukanga maimoatanga. Mena he iti rawa te kukū o te matūriki, ka ngoikore rawa pea te tohu ultrasonic e whakaatahia ana ki te transducer, ka hua ake he tatau tere rere hē. I tetahi atu taha, ki te teitei rawa te kukū, ka puta he pokanoa ki te tohu, ka whakapohehe i ngā hua ine.

He mea nui anō hoki te rahi me te āhua o ngā matūriki whakaata. He mea aro te nekehanga Doppler i roto i te tohu ultrasonic ki te rahi o ngā matūriki. He rerekē ngā rahi o ngā matūriki kei roto i ngā wai rerekē, ā, ki te kore te tohatoha rahi matūriki i roto i te awhe tino pai mō te hoahoa o te mita rere, ka puta he hapa ine. Hei tauira, i roto i te pūnaha whakamatao ahumahi, ko te noho mai o ngā matūriki nunui me ngā matūriki iti ka puta he whakaata koretake, ka uaua ai mō te mita rere te whakatau tika i te tere rere toharite.

Kāore i te tino pai te rere o te wai i roto i ngā paipa. He mea noa te pōrearea me ngā awhiowhio, inā koa i roto i ngā paipa he piko, he takirere, he huringa ohorere rānei o te horahanga whakawhiti. Ka whakaarohia e ngā mita rere ultrasonic Doppler he āhua rere ōrite puta noa i te whakawhiti o te paipa. Heoi, i te aroaro o te pōrearea, ka rerekē te tere rere i ngā wāhi rerekē i roto i te paipa. Ko te tikanga o tēnei, kāore pea te tohu ultrasonic e whakaatu tika i te tere rere toharite, ka hua ake he hapa ine. Hei tauira, i roto i tētahi tipu hinu matū, he maha ngā wā ka pāngia ngā paipa e kawe ana i ngā wai matotoru e ngā tauira rere uaua nā te matotoru teitei me te aroaro o ngā hononga, ka uaua ai mō ngā mita rere Doppler te whakarato i ngā pānui tika.

Ka taea hoki e te kore taurite o te rere te whai wāhi ki te iti o te tika. Mēnā kāore te rere e tohatohahia ōrite puta noa i te paipa, ka hē pea te whakamārama a te mita rere Doppler i te tere o te rere. Hei tauira, i roto i tētahi paipa kei reira he aukati wāhanga i tētahi taha, ka hē te rere, ā, ka hē te ine a te mita rere i runga i te whakaaro taurite.

Ngā mita rere orooro Dopplerhe ngoikoree pā ana ki ngā pūtake haruru o waho. Ka taea e te pokanoa hiko mai i ngā taputapu tata, pēnei i ngā motuka, ngā whakawhiti hiko, me ētahi atu taputapu hiko, te whakararuraru i te tohu ultrasonic. I ngā wāhi ahumahi, ina he nui ngā taputapu hiko e tata ana, ka waiho pea tēnei pokanoa hei raruraru nui. Hei tāpiri, ka taea hoki e ngā wiri ā-ringa mai i ngā papu, i ētahi atu mīhini rānei te pā ki te mahi a te mita rere mā te whakauru i te haruru kāore e hiahiatia ki roto i te pūnaha ine.

Ka taea e te aroaro o ngā arai, ngā panonitanga rānei i roto i te rauemi paipa te whakaputa i te whakaata me te hurihanga oro. Ina tūtaki te tohu ultrasonic ki tētahi panonitanga i roto i te rauemi pakitara paipa, i tētahi hanganga ā-roto rānei, ka whakaatahia, ka hurihia rānei tētahi wāhanga o te tohu, ka whakapēkē i te tohu taketake, ā, ka hua ake he ine tere rere hē. Hei tauira, i roto i tētahi paipa he paninga, he arai rānei nō tētahi rauemi rerekē, kāore pea te tohu ultrasonic e horapa pērā i te mea e tumanakohia ana, ka hua ake he hapa ine.

Hei whakamutunga, ko te iti o te tika o Dopprēngā mita rere ultrasonicka taea te kī hete huinga o ngā āhuatanga e pā ana ki ngā āhuatanga o te matūriki, ngā kōtaha rere matatini, me te pokanoa tohu. He mea nui te mārama ki ēnei āhuatanga kia taea ai e ngā kaihangarau me ngā kaiwhakahaere te whakatau whai whakaaro mō te whakamahinga o ngā mita rere Doppler, me te mahi i ngā mahi tika hei whakaiti i te pānga o ēnei herenga.