CN103162767A - Water level alarm circuit - Google Patents
Water level alarm circuit Download PDFInfo
- Publication number
- CN103162767A CN103162767A CN 201110414745 CN201110414745A CN103162767A CN 103162767 A CN103162767 A CN 103162767A CN 201110414745 CN201110414745 CN 201110414745 CN 201110414745 A CN201110414745 A CN 201110414745A CN 103162767 A CN103162767 A CN 103162767A
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- China
- Prior art keywords
- water level
- power supply
- probe
- integrated circuit
- water
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention relates to a water level alarm circuit. In daily life and industrial life, filling of water into a water bank is needed. An ordinary water level pipe has the disadvantages that water level can not be watched clearly due to scale deposit and corrosion after the water level pipe is used for a long time and excessive water is filled and overflows and waste of water resources is caused. The water level alarm circuit comprises a probe a, a probe b, a cmos type 555 integrated circuit, a loud speaker, a light-emitting diode (LED), and a power supply. One end of the probe a is sequentially connected with a resistor R2, a resistor R1, a switch, and the power supply. One end of the probe b is sequentially connected with a capacitor C1 and the power supply. The cmos type 555 integrated circuit is connected in parallel between two routes. One route of the cmos type 555 integrated circuit is connected with the power supply through a capacitor C2. The other route of the cmos type 555 integrated circuit is connected with the power supply through the resistor R3 and the LED. The cmos type 555 integrated circuit is connected with an audion VT1 and the loud speaker in series. The water level alarm circuit is simple in structure, capable of being applied to various water tanks, water towers and other containers, and adjusting position of the probe according to the condition to achieve the purpose of alarming.
Description
Technical field
The present invention relates to a kind of water level alarm circuit.
Background technology
All need to add in feed-tank water in daily life and commercial production, but water level pipe commonly used often observes along with the corrosion of passage of time water level pipe incrustation scale is difficult to see clearly water level, add the water overfill and overflow and cause water resource waste thereby cause.
Summary of the invention
Technical matters solved by the invention be to provide a kind of circuit structure simple, be fit to all kinds of water tanks, adjust the water level alarm circuit of probe location according to actual conditions.
For solving above-mentioned technical matters, the technical scheme that the present invention takes:
A kind of water level alarm circuit, its special character is: comprise probe a, probe b, cmos type 555 integrated circuit, loudspeaker, LED, power supply, probe a one end is contact resistance R2, resistance R 1, switch, power supply successively, the end of probe b connects capacitor C 1, power supply successively, cmos type 555 integrated circuit in parallel between two-way, cmos type 555 integrated circuit one tunnel are connected with power supply through capacitor C 2, another road is connected with power supply through resistance R 3, LED, and cmos type 555 integrated circuit are in series with triode VT1 and loudspeaker.
Above-mentioned triode VT1 adopts miniwatt NPN type triode 9013.
Above-mentioned LED adopts BT111-X type red light emitting diodes.
Compared with prior art, circuit structure of the present invention is simple, can be applied to the containers such as various types of water tank water towers, according to circumstances regulates the position of probe to reach the purpose of warning.
Description of drawings
Fig. 1 is circuit diagram of the present invention.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1, the present invention includes probe a, probe b, cmos type 555 integrated circuit, loudspeaker, LED, power supply, probe a one end is contact resistance R2, resistance R 1, switch, power supply successively, the end of probe b connects capacitor C 1, power supply successively, cmos type 555 integrated circuit in parallel between two-way, cmos type 555 integrated circuit one tunnel are connected with power supply through capacitor C 2, and another road is connected with power supply through resistance R 3, LED, and cmos type 555 integrated circuit are in series with triode VT1 and loudspeaker.
Above-mentioned triode VT1 adopts miniwatt NPN type triode 9013.
Above-mentioned LED adopts BT111-X type red light emitting diodes.
Workflow:
When being open-circuit condition between probe a, b, cmos type 555 integrated circuit can starting of oscillation, when water level surpasses probe b because glassware for drinking water has electric conductivity, present than low resistance between two probes, thereby make the charge and discharge circuit that is comprised of resistance R 1, resistance R 2 and capacitor C 1 reach horizontal loop, the oscillating condition of cmos type 555 integrated circuit is met, and cmos type 555 integrated circuit output vibratory impulses are after triode VT1 amplifies, loudspeaker is sounded, LED flicker simultaneously.
Claims (3)
1. water level alarm circuit, it is characterized in that: comprise probe a, probe b, cmos type 555 integrated circuit, loudspeaker, LED, power supply, probe a one end is contact resistance R2, resistance R 1, switch, power supply successively, the end of probe b connects capacitor C 1, power supply successively, cmos type 555 integrated circuit in parallel between two-way, cmos type 555 integrated circuit one tunnel are connected with power supply through capacitor C 2, another road is connected with power supply through resistance R 3, LED, and cmos type 555 integrated circuit are in series with triode VT1 and loudspeaker.
2. a kind of water level alarm circuit according to claim 1, is characterized in that: described triode VT1 employing miniwatt NPN type triode 9013.
3. a kind of water level alarm circuit according to claim 1, is characterized in that: described LED employing BT111-X type red light emitting diodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110414745 CN103162767A (en) | 2011-12-13 | 2011-12-13 | Water level alarm circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110414745 CN103162767A (en) | 2011-12-13 | 2011-12-13 | Water level alarm circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103162767A true CN103162767A (en) | 2013-06-19 |
Family
ID=48586042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110414745 Pending CN103162767A (en) | 2011-12-13 | 2011-12-13 | Water level alarm circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103162767A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103413546A (en) * | 2013-08-12 | 2013-11-27 | 黄月华 | Five-watt buzzer |
| CN104215301A (en) * | 2014-09-12 | 2014-12-17 | 成都威邦科技有限公司 | Water level alarming circuit |
-
2011
- 2011-12-13 CN CN 201110414745 patent/CN103162767A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103413546A (en) * | 2013-08-12 | 2013-11-27 | 黄月华 | Five-watt buzzer |
| CN104215301A (en) * | 2014-09-12 | 2014-12-17 | 成都威邦科技有限公司 | Water level alarming circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130619 |