水位告警器,Water level alarm
水位告警器,Water level alarm
關(guān)鍵字：水位告警電路,水位告警器
This circuit not only indicates the amount of water present in the overhead tank but also gives an alarm when the tank is full.
The circuit uses the widely available CD4066, bilateral switch CMOS IC to indicate the water level through LEDs.
When the water is empty the wires in the tank are open circuited and the 180K resistors pulls the switch low hence opening the switch and LEDs are OFF. As the water starts filling up, first the wire in the tank connected to S1 and the + supply are shorted by water. This closes the switch S1 and turns the LED1 ON. As the water continues to fill the tank, the LEDs2 , 3 and 4 light up gradually.
The no. of levels of indication can be increased to 8 if 2 CD4066 ICs are used in a similar fashion.
When the water is full, the base of the transistor BC148 is pulled high by the water and this saturates the transistor, turning the buzzer ON. The SPST switch has to be opened to turn the buzzer OFF.
Remember to turn the switch ON while pumping water otherwise the buzzer will not sound!
發(fā)布評論請先 登錄
MC33774 AFE 不重置ALARM_OUT是怎么回事？
投入式水位計微型化設(shè)計如何實現(xiàn)大范圍水位監(jiān)測?
雷達(dá)水位計：高精度非接觸式水位監(jiān)測的核心裝備與應(yīng)用實踐
投入式水位計的水位測量原理：從水壓到水位的轉(zhuǎn)換
投入式水位計如何通過水壓測量水位?核心原理解析
什么是水位傳感器？一篇看懂核心定義、原理與應(yīng)用
水位自動監(jiān)測預(yù)警系統(tǒng)：實時監(jiān)測水位，防范潛在水患風(fēng)險
使用alarm模塊的時候，設(shè)置時間之后沒有更新新的alarm時間是為什么？
RTC Alarm組件在設(shè)定新時間后周期性分鐘和小時鬧鐘無響應(yīng)是怎么回事？
雷達(dá)水位監(jiān)測儀：金葉儀器助力水位監(jiān)測智能化升級
基于無線通信的水位監(jiān)測系統(tǒng)概述
水位自動監(jiān)測報警器：手機遠(yuǎn)程監(jiān)控，不限距離啟停水泵
水位自動控制器是什么設(shè)備?4G遠(yuǎn)程通訊，手機APP智能控制水泵
無線遠(yuǎn)程自動水位控制器如何逆襲成智能終端？
評論