Toshiba PVT-712BT 11MC4 Micro Convex Ultrasound Probe Lapaʻau Lapaʻau Halemai

Hiki iā mākou ke hāʻawi aku i nā ʻimi Toshiba ʻē aʻe:

Lae ʻike

Nā Transducers

Hoʻololi nā mea transducers kani i ka AC i ultrasound, a me ka hope. ʻO Ultrasonics, pili pinepine i nā transducers piezoelectric a i ʻole nā ​​​​transducers capacitive. Hoʻololi nā kristal piezoelectric i ka nui a me ke ʻano ke hoʻohana ʻia kahi volta; ʻO ka volta AC ka mea e oscillate ai i ka alapine like a hoʻopuka i ke kani kani ultrasonic. Hoʻohana nā transducers capacitive i nā kahua electrostatic ma waena o kahi diaphragm conductive a me kahi pā hope.

Hiki ke ho'oholo 'ia ke kumu kukuna o ka transducer e ka wahi transducer ikaika a me ke kinona, ka lō'ihi o ka hawewe ultrasound, a me ka velocity leo o ka mea ho'olaha. Hōʻike nā kiʻi i nā kīʻaha kani o kahi transducer ultrasonic i kālele ʻole ʻia a kālele ʻia i loko o ka wai, akā ma nā pae ikehu like ʻole.

No ka mea e hana ana nā mea piezoelectric i ka volta ke hoʻohana ʻia ka ikaika iā lākou, hiki iā lākou ke hana ma ke ʻano he mea ʻike ultrasonic. Hoʻohana kekahi mau ʻōnaehana i nā transmitters a me nā mea hoʻokipa kaʻawale, aʻo nā mea ʻē aʻe e hui pū i nā hana ʻelua i kahi transceiver piezoelectric hoʻokahi.

Hiki i nā mea hoʻolele kani kani ke hoʻohana i nā loina non-piezoelectric. e like me ka magnetostriction. Hoʻololi liʻiliʻi ka nui o nā mea me kēia waiwai ke ʻike ʻia i kahi māla magnetic, a hana i nā transducers kūpono.

He diaphragm lahilahi ka capacitor ("condenser") e pane ana i na hawewe ultrasound. ʻO ka hoʻololi ʻana i ke kahua uila ma waena o ka diaphragm a me kahi pā hope kokoke loa e hoʻohuli i nā hōʻailona kani i nā au uila, hiki ke hoʻonui ʻia.

Hoʻohana pū ʻia ka loina diaphragm (a i ʻole membrane) i nā mea hoʻololi kani ultrasonic micro-machined hou (MUTs).

Hana ʻia kēia mau mea hana me ka hoʻohana ʻana i ka ʻenehana micro-machining silicon (MEMS technology), kahi mea pono loa no ka hana ʻana i nā arrays transducer. Hiki ke ana a ho'okomo 'ia ka ha'alulu o ka diaphragm me ka ho'ohana 'ana i ka capacitance ma waena o ka diaphragm a me kahi pā hope kokoke loa (CMUT), a i 'ole ma ka ho'ohui 'ana i kahi papa'ili'ili piezo-electric ma ka diaphragm (PMUT). ʻO kahi ʻē aʻe, ua hōʻike ʻia nā noiʻi hou e hiki ke ana ʻia ka haʻalulu o ka diaphragm e kahi resonator ring optical liʻiliʻi i hoʻohui ʻia i loko o ka diaphragm (OMUS).

Hoʻohana pū ʻia nā Ultrasonic Transducers i ka levitation acoustic.