CN102455205A - Water-level alarm device - Google Patents
Water-level alarm device Download PDFInfo
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- CN102455205A CN102455205A CN2010105204191A CN201010520419A CN102455205A CN 102455205 A CN102455205 A CN 102455205A CN 2010105204191 A CN2010105204191 A CN 2010105204191A CN 201010520419 A CN201010520419 A CN 201010520419A CN 102455205 A CN102455205 A CN 102455205A
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- water
- loudspeaker
- alarm device
- timers
- pin
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Abstract
The invention discloses a water-level alarm device, belonging to the technical field of liquid level monitoring. The water-level alarm device comprises two detection electrodes put in water, a detection circuit connected with the detection electrodes, and a loudspeaker Y connected with the detection circuit, wherein the detection circuit is a multivibrator composed of a 555 timer and a plurality of capacitors and resistors; one detection electrode is connected with pins 2 and 6 of the 555 timer, and the other electrode is connected to the ground through the capacitor C1; the loudspeaker Y is connected between pins 3 and 8 of the 555 timer in parallel; and a pin 7 of the 555 timer is connected with a power source through the resistor R1, and connected with the ground through the resistor R2. The invention has the advantage of safe and simple circuit design, and can automatically sound the alarm when the liquid level reaches the alarm position.
Description
Technical field
The present invention relates to a kind of liquid level monitoring device, specifically is a kind of water-level alarm device, belongs to the liquid level monitoring technical field.
Background technology
In the life, the electrical equipment that is filled with water miscellaneous is everywhere.At present, this series products mostly is not with the water level supervising device, and the user needs oneself to judge the height of water level, is determining whether and need add water to product then.Sometimes, because the too busy too tired height of having forgotten water level in the inspection electrical equipment of work causes lack of water to cause mishap.Also have some electrical equipment that are filled with water to have the water level supervising device at present, but such product circuit complex design cause selling at exorbitant prices.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the present invention provides a kind of water-level alarm device, and when water level reached certain position, sending automatically reports to the police gave caution, avoids accident to take place.
The present invention realizes with following technical scheme: a kind of water-level alarm device comprises two detecting electrodes putting into water, the testing circuit that is connected with detecting electrode, the loudspeaker Y that is connected with testing circuit; The multivibrator that described detection electricity is made up of 555 timers and some electric capacity, resistance; One of them detecting electrode is connected with 2,6 pin of 555 timers, and another detecting electrode is through capacitor C 1 ground connection; Be parallel with loudspeaker Y between 3,8 pin of 555 timers; 7 pin of 555 timers are connected with power supply through resistance R 1, through resistance R 2 ground connection.
Beneficial effect is: circuit design is safe and simple, when water level arrives alert locations, sounds the alarm automatically.
Description of drawings
Fig. 1 is a circuit diagram of the present invention
Embodiment
To combine accompanying drawing that the present invention is described further below.
As shown in Figure 1, a kind of water-level alarm device comprises two detecting electrodes putting into water, the testing circuit that is connected with detecting electrode, the loudspeaker Y that is connected with testing circuit; The multivibrator that the core of testing circuit is made up of 555 timers and some electric capacity, resistance; One of them detecting electrode is connected with 2,6 pin of 555 timers, and another detecting electrode is through capacitor C 1 ground connection; Be parallel with loudspeaker Y between 3,8 pin of 555 timers; 7 pin of 555 timers are connected with power supply through resistance R 1, through resistance R 2 ground connection.The core of this circuit by 555, the multivibrator formed such as capacitor C, resistance.In addition, also have exploring electrode, loudspeaker Y etc.In order to increase the serviceable life of loudspeaker Y, the negative pole of loudspeaker Y is connected through 8 pin of capacitor C 2 and 555 timers.
The course of work: a pair of exploring electrode is connected across the two ends of capacitor C 1, and when liquid level did not have rapier, capacitor C1 was equivalent to by short circuit, and circuit can't vibrate, and does not report to the police.In the time of under liquid level is in rapier, circuit is because of satisfying the oscillating condition starting of oscillation, and oscillator signal orders about loudspeaker and sends alarm sound.The height of relevant oscillation frequency can discharge and recharge time constant through change and realize.
Claims (2)
1. water-level alarm device; Comprise two detecting electrodes putting into water; The testing circuit that is connected with detecting electrode, the loudspeaker Y that is connected with testing circuit is characterized in that the multivibrator that described testing circuit is made up of 555 timers and some electric capacity, resistance; One of them detecting electrode is connected with 2,6 pin of 555 timers, and another detecting electrode is through capacitor C 1 ground connection; Be parallel with loudspeaker Y between 3,8 pin of 555 timers; 7 pin of 555 timers are connected with power supply through resistance R 1, through resistance R 2 ground connection.
2. a kind of water-level alarm device according to claim 1, the negative pole that it is characterized in that loudspeaker Y is connected through 8 pin of capacitor C 2 and 555 timers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105204191A CN102455205A (en) | 2010-10-26 | 2010-10-26 | Water-level alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105204191A CN102455205A (en) | 2010-10-26 | 2010-10-26 | Water-level alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102455205A true CN102455205A (en) | 2012-05-16 |
Family
ID=46038635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105204191A Pending CN102455205A (en) | 2010-10-26 | 2010-10-26 | Water-level alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102455205A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104677461A (en) * | 2013-11-29 | 2015-06-03 | 哈尔滨恒誉名翔科技有限公司 | Capacitive intelligent liquid level measuring instrument |
| CN104965171A (en) * | 2015-06-11 | 2015-10-07 | 苏州爱吉亚电子科技有限公司 | Automobile switch working current and voltage simulating test equipment |
| CN105823527A (en) * | 2016-05-17 | 2016-08-03 | 苏州博众精工科技有限公司 | Liquid level height detection alarm |
-
2010
- 2010-10-26 CN CN2010105204191A patent/CN102455205A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104677461A (en) * | 2013-11-29 | 2015-06-03 | 哈尔滨恒誉名翔科技有限公司 | Capacitive intelligent liquid level measuring instrument |
| CN104965171A (en) * | 2015-06-11 | 2015-10-07 | 苏州爱吉亚电子科技有限公司 | Automobile switch working current and voltage simulating test equipment |
| CN105823527A (en) * | 2016-05-17 | 2016-08-03 | 苏州博众精工科技有限公司 | Liquid level height detection alarm |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120516 |