Basｅd SＣM the watｅr level detecｔｉｏｎ contrｏｌ ｓystem
deｓｉｇn
Ａｂstrac
Wiｔh thｅ soｃiａl anｄ technｏlogical progｒess, as wｅll aｓ the leｖel
of ｐeoｐｌe'ｓ ｓｔanｄard of living ｇraｄuallｙ iｍprove ｗiｔh the ｅｘ
ｈｉｂiｔion, aｎd tｈe cｏnvenｉenｃｅ ｏｆ automaｔｉc ｃｏｎtroｌ ｓystem for
tｈe ｂegiｎninｇ of liｆe gradｕalｌｙ iｎto our liｖｅｓ, ｓingle－cｈip ｍｉcｒ
ｏcoｍputer ｄeｖelopmｅｎｔ ｉs ａn impｏrｔａｎｔ branch，the advaｎｔageｓ
of higｈ ｒeliabiｌitｙ, high performaｎce and ｌow cosｔ, lｏw—ｖolｔａge，
low-poｗｅr miｃｒｏｃｏｎtrｏller as the core of the auｔｏmａtioｎ ｃontrｏl
system has woｎ ａ ｗide raｎge oｆ applicａｔioｎs.
The title oｆ tｈe ｇｒａduate deｓign micｒoconｔrolｌｅｒ-baｓed waｔeｒ l
ｅvel deｔｅction anｄ control ｓystem dｅsign, thrｅｅ metaｌ roｄｓ ｉnto the
water usｅｄ to deｔect thｅ ｓignal, the coｎｄｕｃｔiｖity ｏｆ tｈｅ ｗater，
cａn sｅe ｔhat ｔｈe waｔｅr level changes。 Uｎder ｎormaｌ ｃircumstances， th
ｅ waｔer lｅｖｅl shｏuld be ｋepｔ ｗithｉｎ a certain ｒangｅ ｃhａngｅ
ｓ， the water level doｅs nｏt ｅｘceｅd the stｉｐulａted uｐper aｎd loweｒ liｍ
ｉts, in the eｖent of a sｙsteｍ fａilurｅ, shoｕｌd be promptlｙ cuｔ ofｆ elｅc
ｔrｉcal ｐower， and there shｏuld be soｕnd and audible ａｌarm signalｓ of t
ｈe lｉghｔ－emitｔｉnｇ diodｅ. Desiｇn Syｓｔem aiｍed the aｐpliｃatiｏn
miｃroconｔｒoller run automatiｃａｌly, ｓo ｔhaｔ ｔhe watｅr level in the w
ａtｅr tｏwer aｌｗays ｍaiｎtaiｎed wｉtｈin a certaiｎ ｒange iｎ ordｅr ｔo eｎsu
ｒe the conｔｉnuｏus norｍal waｔｅｒ。 The dｅsigｎ iｓ basｅd on AT89C51
mｉｃroｃoｎｔroller ａs ｔhe core components of ｔｈe water tower waｔer ｌｅvel
dｅｔectiｏｎ anｄ contrｏl simulaｔioｎ ｓyｓtem dｅsｉgneｄ to ｄetect watｅｒ ｌ
evel ｃoｎtroｌ, procｅｓsiｎg, anｄ ａlａrm fｕｎctionｓ, aｎd Protｅus ｓ
imulaｔion sofｔｗａrｅ enｖirｏｎｍent simulａtiｏｎ testinｇ． Experimeｎｔal ｒ
eｓｕlts show ｔhaｔ the desiｇn of the ｓystem ｈａs a good ｄeｔｅctiｏn and cｏ
ntｒol functioｎs, pｏrtaｂｉlｉty and scalabiｌity．
