Multipurpose overflow alarm

Abstract

The invention discloses a multipurpose overflow alarm. The multipurpose overflow alarm comprises first to third resistors, first to fourth NAND gates, first to third capacitors, a first diode, a second diode, a sensor, a relay, a switch, a power source, a triode and a buzzer. A first end of the first resistor is respectively connected with a first end of the first NAND gate, a second end of the first NAND gate and a first end of the sensor. The multipurpose overflow alarm consists of a trigger circuit and an oscillating circuit, the sensor is in a normally open state, the third NAND gate outputs low level, and the buzzer does not alarm; once the sensor contacts with water, the third NAND gate outputs low level, the fourth NAND gate outputs high level, the first diode feeds back to the second NAND gate for digital display of self locking, and an oscillator works to drive the buzzer to alarm. The multipurpose overflow alarm is capable of timely alarming when water overflows, so that water resources can be saved.

Description

technical field [0001] The invention relates to an alarm, in particular to a multipurpose overflow alarm. Background technique [0002] Water is one of the most common substances on the earth. As the source of life, water is an important resource for the survival of all life, including human beings, and is also the most important component of organisms. Water has played an important role in the evolution of life. Although water is It is a renewable resource, but it cannot be wasted. Now tap water is used in many places in life and production, but there is no overflow alarm device, resulting in a serious waste of water resources. Contents of the invention [0003] The object of the present invention is to provide a multi-purpose overflow alarm in order to solve the above problems. [0004] The present invention achieves the above object through the following technical solutions: [0005] A multi-purpose overflow alarm, comprising first to fourth resistors, first to fourth...

AI Technical Summary

Problems solved by technology

[0002] Water is one of the most common substances on the earth. As the source of life, water is an important resource for the survival of all life, including human beings, and is also the most important component of organisms. Water has played an important role in the evolution of life. Although water is It is a renewable resource, but it cannot be wasted. Tap water is used in many places in life and production, but there is no overflow alarm device, resulting in a serious waste of water resources.

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