Ubale pakati pa piezoresistive pressure sensor ndi zotuluka

Piezoresistive pressure sensors ndi mtundu wa sensor yokakamiza yomwe imagwiritsa ntchito mphamvu ya piezoresistive kuyeza kuthamanga. Mphamvu ya piezoresistive imatanthawuza kusintha kwa kukana kwamagetsi kwa chinthu chikakumana ndi zovuta zamakina kapena kupunduka. M'masensa a piezoresistive pressure, diaphragm kapena membrane nthawi zambiri amagwiritsidwa ntchito kutembenuza mphamvu yomwe imagwiritsidwa ntchito kukhala ma mechanical deformation, yomwe imayambitsa kusintha kwa kukana kwa piezoresistive elements.

Ubale pakati pa kukakamizidwa ndi kutulutsa kwa piezoresistive pressure sensor imakhudzidwa ndi mapangidwe ndi zinthu zakuthupi za sensa. Nazi mwachidule za ubale wamba:

1. Direct Proportional Ubale:

M'masensa ambiri a piezoresistive pressure, pali mgwirizano wolunjika ndi mzere pakati pa kukakamizidwa kogwiritsidwa ntchito ndi kusintha kwa magetsi. Kupanikizika kumachulukirachulukira, diaphragm kapena nembanemba ya sensa imasinthika, zomwe zimapangitsa kuti zinthu za piezoresistive zimakhala zovuta. Kupsyinjika kumeneku kumabweretsa kusintha kwa kukana, ndipo kusinthaku kumagwirizana ndi kukakamizidwa kogwiritsidwa ntchito. Kusintha kwa kukana kungayesedwe pogwiritsa ntchito dera la mlatho wa Wheatstone kapena njira zina zowongolera ma siginecha.

2.Kukonzekera kwa Mlatho wa Wheatstone:

Ma sensor a piezoresistive pressure nthawi zambiri amagwiritsa ntchito dera la mlatho wa Wheatstone kuyeza kusintha kwa kukana molondola. Dera la mlatho lili ndi zinthu zambiri za piezoresistive, zina zomwe zimakhudzidwa ndi kupsinjika, pomwe ena satero. Kusintha kwa kusiyana kwa kukana pakati pa zinthu zowonongeka ndi zosasunthika kumagwiritsidwa ntchito popanga mphamvu yamagetsi yomwe imakhala yofanana ndi mphamvu yogwiritsidwa ntchito.

3.Kuyika kwa Chizindikiro:

Kutulutsa kwa piezoresistive pressure sensor nthawi zambiri kumakhala chizindikiro cha analogi. Kutulutsa kwamagetsi kumafanana ndi kusintha kwa kukana ndipo, chifukwa chake, kukakamizidwa kogwiritsidwa ntchito. Zozungulira zowongolera ma Signal zitha kugwiritsidwa ntchito kukulitsa, kusefa, ndikuwongolera ma siginecha kuti mupeze kuwerengera kolondola.

4.Kuwongolera:

Chifukwa cha kulolerana kwa kupanga komanso kusiyanasiyana kwa ma sensor, ma sensor a piezoresistive nthawi zambiri amafunikira kuwongolera kuti atsimikizire zoyezera zolondola. Calibration imaphatikizapo kudziwa mgwirizano weniweni pakati pa mphamvu yamagetsi ya sensa ndi mphamvu yeniyeni yomwe ikugwiritsidwa ntchito. Kuwongolera uku kungathe kupezedwa poyesa ndi kufananiza motsutsana ndi muyezo.

Mwachidule, mgwirizano pakati pa kukakamizidwa ndi kutulutsa kwa piezoresistive pressure sensor nthawi zambiri imakhala yofanana komanso yofanana. Kupanikizika kumachulukirachulukira, kukana kwa sensa kumasintha, zomwe zimapangitsa kuti pakhale kusintha kofananira kwamagetsi otulutsa. Kusintha kwa mlatho wa Wheatstone ndi kuwongolera ma siginecha kumagwira ntchito yofunika kwambiri pakusinthira kukana kukhala muyeso wogwiritsa ntchito komanso wolondola.