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 Ïîìîæèòå. Êàê èçìåðèòü åìêîñòü ïëîñêîãî êîíäåíñàòîðà ñ âîäîé |
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 Jul 5 2016, 23:48
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Ìåñòíûé
Ãðóïïà: Ó÷àñòíèê
Ñîîáùåíèé: 236
Ðåãèñòðàöèÿ: 1-04-06
Ïîëüçîâàòåëü ¹: 15 688
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Ãðàæäàíå, çàíèìàëñÿ ëè êòî-íèáóäü ïðàêòè÷åñêè äåòñêèìè èçìåðåíèÿìè åìêîñòè ïëîñêîãî êîíäåíñàòîðà, ïîãðóæåííîãî â îáû÷íóþ âîäîïðîâîäíóþ âîäó?. Èìååòñÿ äâå ïëàñòèíû (èç ìåòàëëà) 100x60ìì ñ ðàññòîÿíèåì ìåæäó ïëàñòèíàìè ïîðÿäêà 100ìì. Ìåæäó ïëàñòèíàìè îáû÷íàÿ âîäà èç-ïîä êðàíà. Íó âîò ÷òî-òî âðîäå òàêîãî  Ïî øêîëüíîé ôîðìóëå äëÿ ïëîñêîãî êîíäåíñàòîðà C= ε0*ε*S/d åìêîñòü äîëæíà áûòü îêîëî 0.4 0.04 íàíîôàðàä. Áåðåì êîíäîâûé ñîâåòñêèé äèâàéñ äëÿ èçìåðåíèÿ åìêîñòè è ïîëó÷àåì   íó à åñëè áåç äèâàéñà ïîäàâàòü ñòóïåíüêó íàïðÿæåíèÿ íà êîíäåíñàòîð, òî ïîëó÷àåì âîò òàêóþ çàãîãóëèíó  Çàãîãóëèíà âðîäå áû êàê âïîëíå ñîîòâåòñòâóåò ñõåìå  RC-öåïî÷êè ñ ïàðàëëåëüíûì è ïîñëåäîâàòåëüíûì ñîïðîòèâëåíèÿìè. (èçâåñòíîå ñîïðîòèâëåíèå R=5êÎì, R1, R2 è C íåèçâåñòíû è îöåíèâàþòñÿ ïî ïåðåõîäíûì êðèâûì) Îäíàêî åñòü íüþàíñ. Âñÿêèå ïîäãîíêè ïàðàìåòðîâ ñõåìû ïîä íàáëþäàåìûå êðèâûå äàþò çíà÷åíèÿ åìêîñòè íà óðîâíå ìèëëèôàðàä. ×òî íèêàê íå ïîõîæå íè íà øêîëüíóþ ôîðìóëó, íè íà çíà÷åíèå åìêîñòè, èçìåðåííîå äèâàéñîì. È ÷òî äåëàòü - íåÿñíî.
Ñîîáùåíèå îòðåäàêòèðîâàë evgen2 - Jul 6 2016, 18:03
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Îòâåòîâ
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Jul 7 2016, 10:43
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Ìåñòíûé
Ãðóïïà: Ó÷àñòíèê
Ñîîáùåíèé: 236
Ðåãèñòðàöèÿ: 1-04-06
Ïîëüçîâàòåëü ¹: 15 688
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Öèòàòà(Onkel @ Jul 7 2016, 12:18)  íó "ïðîêàëèòü" íå çíà÷èò ãðåòü äî 3 êèëîêåëüâèíîâ. Íî ýòî åäèíñòâåííûé ìåòîä, è îí ðàáîòàåò. Âûðàæóñü ïî äðóãîìó- îòêà÷àòü âîäó.
Âàø ïðèìåð ñåíñîðà - èãðóøêà, îí îáëåçåò ÷åðåç íåäåëþ ðàáîòû. íó äàâàéòå òàê. Èçìåðåíèå âëàæíîñòè "ïî îïðåäåëåíèþ" - äîðîãî, äîëãî, ñâÿçàíî ñ ðó÷íîé ðàáîòîé è âàðèàíòàìè "òåõíèê Âàñÿ íàïèñàë â áàíî÷êó âìåñòî òîãî, ÷òîá ïåðåòñÿ â íåâåäîìûå åáåíÿ". Õî÷åòñÿ ÷åãî-íèáóäü ïðîñòîãî, äåøåâîãî è íàä¸æíîãî, ÷òîáû îíî âûäàâàëî ïîïóãàè, êîòîðûå ìîæíî áûëî áû èíòåðïðåòèðîâàòü êàê èëè ïðîöåíò âëàæíîñòè èëè "òóò âîäà". Ïîñëåäíåå ìîæíî â âàðèàíòå "óðîâåíü (ãðóíòîâîé) âîäû - xx ñì îò ïîâåðõíîñòè", ãäå õõ - îò 0 äî 100. Âàðèàíò ñ ïîïëàâêîì â òðóáå íå ïðîõîäèò ïîòîìó êàê íå êàæåòñÿ íàä¸æíûì - çàðàñò¸ò êàêîé-íèáóäü ðÿñêîé èëè åùå êàêîé-íèáóäü äðÿíüþ. Öèòàòà(Onkel @ Jul 7 2016, 12:18) Ñåíñîðû ñ áîëåå-ìåíåå óñòîé÷èâûìè ýëåêòðîäàìè òÿíóò íà äåñÿòêè áàêñîâ, èõ ïîëíî, à ÷òî êàñàåòñÿ êà÷åñòâà- ñåíñîðû ïðàâèëüíî èçìåðÿþò òîê , òóò ê íèì ïðåòåíçèé íåò, à âîò óæå âû÷èñëåíèå âëàæíîñòè - ìîäåëüíîçàâèñèìûé ìåõàíèçì,òóò òî÷íîñòè íèêàêîé. À ãäå ìîæíî ïîñìîòðåòü íà õîòÿ áû äàòàøèòû òàêèõ ñåíñîðîâ?
Ñîîáùåíèå îòðåäàêòèðîâàë evgen2 - Jul 7 2016, 10:52
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Jul 10 2016, 08:14
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Ïðîôåññèîíàë
Ãðóïïà: Ó÷àñòíèê
Ñîîáùåíèé: 1 541
Ðåãèñòðàöèÿ: 21-03-12
Èç: ÐÔ
Ïîëüçîâàòåëü ¹: 70 919
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Öèòàòà(evgen2 @ Jul 7 2016, 14:43) Õî÷åòñÿ ÷åãî-íèáóäü ïðîñòîãî, äåøåâîãî è íàä¸æíîãî, ÷òîáû îíî âûäàâàëî ïîïóãàè, êîòîðûå ìîæíî áûëî áû èíòåðïðåòèðîâàòü êàê èëè ïðîöåíò âëàæíîñòè èëè "òóò âîäà".
Ïîñëåäíåå ìîæíî â âàðèàíòå "óðîâåíü (ãðóíòîâîé) âîäû - xx ñì îò ïîâåðõíîñòè", ãäå õõ - îò 0 äî 100. Âàðèàíò ñ ïîïëàâêîì â òðóáå íå ïðîõîäèò ïîòîìó êàê íå êàæåòñÿ íàä¸æíûì - çàðàñò¸ò êàêîé-íèáóäü ðÿñêîé èëè åùå êàêîé-íèáóäü äðÿíüþ. Ïðè òàêèõ óñëîâèÿõ, ÿ âèæó òîëüêî ñëåäóþùèé âàðèàíò: Òîíêîñòåííàÿ, çàãëóøåííàÿ äèýëåêòðè÷åñêàÿ òðóáêà, äëèíîé íà âñþ ãëóáèíó èçìåðåíèÿ, èç íåñìà÷èâàåìîãî ìàòåðèàëà. Íà âíóòðåííåé ïîâåðõíîñòè òðóáêè - ðÿä êîëüöåâûõ ýëåêòðîäîâ (êàê ìèëèöåéñêàÿ ïàëêà). Ýòè ýëåêòðîäû ÿâëÿþòñÿ ìåðíîé ëèíåéêîé. Èçìåðÿåòñÿ åìêîñòü ìåæäó íèìè ñêâîçü ñòåíêó. Âîäà ñíàðóæè ïðè ýòîì âûñòóïàåò ÷èñòî êàê ïðîâîäíèê, êàê íàðóæíàÿ îáêëàäêà ïåðåìåííîé ïëîùàäè. ×åì âîäû áîëüøå - òåì áîëüøå áóäåò èçìåðåííàÿ åìêîñòü è ìåíüøå àêòèâíîå ñîïðîòèâëåíèå. Èçìåðÿåì ìåæäó ïàðàìè ýëåêòðîäîâ, íà÷èíàÿ ñâåðõó. Äîïóñòèì, åìêîñòü íàðàñòàåò - çíà÷èò ñ ãëóáèíîé âëàæíîñòü óâåëè÷èâàåòñÿ. Êàê òîëüêî åìêîñòü èçìåíÿòüñÿ ïåðåñòàëà - çíà÷èò äîñòèãíóò óðîâåíü ãðóíòîâîé âîäû, 100% æèäêàÿ âîäà. Âîò êàê-òî òàê.
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Ïîñòðîèâ àâòîìîáèëè, ÷åëîâå÷åñòâî îñâîáîäèëî ëîøàäåé îò íåîáõîäèìîñòè ðàáîòàòü.
Ïî÷åìó îíî íå îñâîáîäèëî îò òàêîé íåîáõîäèìîñòè ñåáÿ ))
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Ñîîáùåíèé â ýòîé òåìå
 evgen2 Ïîìîæèòå. Êàê èçìåðèòü åìêîñòü ïëîñêîãî êîíäåíñàòîðà ñ âîäîé Jul 5 2016, 23:48 Ìåäæèêèâèñ Ýòî ïðîöåññû â äâîéíîì ýëåêòðè÷åñêîì ñëîå íà ãðàíè... Jul 6 2016, 04:06  evgen2 Öèòàòà(Ìåäæèêèâèñ @ Jul 6 2016, 07:06) Ýò... Jul 6 2016, 07:48 MegaVolt Öèòàòà(evgen2 @ Jul 6 2016, 10:43) Ìåæäó ... Jul 6 2016, 07:48 Onkel Öèòàòà(evgen2 @ Jul 6 2016, 11:48) Ìåæäó ... Jul 6 2016, 21:25 evgen2 Öèòàòà(Onkel @ Jul 7 2016, 00:25) èçìåðèò... Jul 6 2016, 21:49 Àëåêñàíäð1 Ó êîíäåíñàòîðà ìåæäó ïëàñòèíàìè äîëæåí áûòü äèýëåê... Jul 6 2016, 05:06 mcheb Óâåëè÷üòå âðåìÿ èìïóëüñà ðàç â 10 è ëó÷øå ñäåëàòü ... Jul 6 2016, 06:04 evgen2 Öèòàòà(mcheb @ Jul 6 2016, 09:04) Óâåëè÷ü... Jul 6 2016, 07:56 MegaVolt Öèòàòà(evgen2 @ Jul 6 2016, 10:56) òàê õî... Jul 6 2016, 07:59 evgen2 Öèòàòà(MegaVolt @ Jul 6 2016, 10:59) Òàê ... Jul 6 2016, 08:08 MegaVolt Öèòàòà(evgen2 @ Jul 6 2016, 11:08) Äà íå ... Jul 6 2016, 08:22 evgen2 Öèòàòà(MegaVolt @ Jul 6 2016, 11:22) Áîþñ... Jul 6 2016, 09:02 MegaVolt Öèòàòà(evgen2 @ Jul 6 2016, 12:02) Ïðåäïî... Jul 6 2016, 09:54 agregat Öèòàòà(evgen2 @ Jul 6 2016, 12:02) Åñëè â... Jul 6 2016, 10:08 evgen2 Öèòàòà(agregat @ Jul 6 2016, 13:08) Äëÿ õ... Jul 6 2016, 10:51 MrYuran Öèòàòà(evgen2 @ Jul 6 2016, 10:56) Ðàçíîï... Jul 6 2016, 14:27 _pv Öèòàòà(MrYuran @ Jul 6 2016, 21:27) Íà ñà... Jul 6 2016, 15:31 Onkel êàê ïðàâèëüíî çàìåòèë ðÿä òîâàðèùåé, ó âàñ íå êîíä... Jul 6 2016, 07:14 _pv ÖèòàòàÏî øêîëüíîé ôîðìóëå äëÿ ïëîñêîãî êîíäåíñàòîð... Jul 6 2016, 14:17 evgen2 Öèòàòà(_pv @ Jul 6 2016, 17:17) íà ïîðÿäî... Jul 6 2016, 17:16 _pv Öèòàòà(evgen2 @ Jul 7 2016, 00:16) åùå ìî... Jul 6 2016, 18:07 evgen2 Öèòàòà(_pv @ Jul 6 2016, 21:07) â îïòè÷åñ... Jul 6 2016, 18:15 РўРёРјСѓСЂ Ð ÑžÐ Â°Ð Ñ Òàê âû ãåîôèçèêó èçîáðåòàåòå.
Ïîñìîòðèòå https://r... Jul 6 2016, 18:15 evgen2 Öèòàòà(РўРёРјСѓСЂ Ð ÑžÐ Â°Ð Ñ @ Jul... Jul 6 2016, 18:37 MrYuran Âîò, îòêîïàë.
Êñòàòè, êëàññíàÿ èäåÿ, ïðåîáðàçîâàò... Jul 7 2016, 11:31 rx3apf ß áû ïåðâûì äåëîì ïîïðîáîâàë LC-êîíóð, ãäå åìêîñòü... Jul 7 2016, 18:52 Onkel Öèòàòà(rx3apf @ Jul 7 2016, 22:52) Ìîæíî ... Jul 7 2016, 20:34 evgen2 Öèòàòà(Onkel @ Jul 7 2016, 23:34) öåëàÿ ã... Jul 7 2016, 21:18 GetSmart Èçìåðÿòü, íàâåðíîå, ëó÷øå êàêèì-òî ìíîãîñòàäèéíûì ... Jul 8 2016, 05:31 rudy_b Êîíòðîëèðîâàòü âîäó ïðàâèëüíåå ïî äèýëåêòðè÷åñêîé ... Jul 8 2016, 14:04
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