CN104215301A - Water level alarming circuit - Google Patents
Water level alarming circuit Download PDFInfo
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- CN104215301A CN104215301A CN201410465626.XA CN201410465626A CN104215301A CN 104215301 A CN104215301 A CN 104215301A CN 201410465626 A CN201410465626 A CN 201410465626A CN 104215301 A CN104215301 A CN 104215301A
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Abstract
The invention discloses a water level alarming circuit. The water level alarming circuit is characterized by consisting of a buzzer BL, a water level detecting circuit (1), a delay circuit (2), a stabilizing circuit (3), an alarming circuit (4) and a sound attenuation indicating circuit (5), wherein the delay circuit (2) is connected with the output end of the water level detecting circuit (1); the stabilizing circuit (3) is connected with the output end of the delay circuit (2); the alarming circuit (4) is connected with the output end of the stabilizing circuit (3); the sound attenuation indicating circuit (5) is connected with the output end of the alarming circuit (4); the output end of the sound attenuation indicating circuit (5) is connected with the buzzer BL; the alarming circuit (4) is also connected with the output end of the delay circuit (2). The water level of a water tank can be detected, and when water in the water tank is full, an alarming signal can be given, so that people can timely close a water source, and waste caused by overflow of water is avoided.
Description
Technical field
The present invention relates to a kind of circuit, specifically refer to a kind of water-level alarm circuit.
Background technology
Water barrow, fire truck etc. are the equipment often can seen in actual life.Water barrow can improve the living environment of people, and fire truck then can protect life, the property safety of people.All need to add water in its water tank, to ensure that it normally works before they use.
But, when in its water tank during topped up with water people there will be unavoidably and forget or do not turn off water valve in time, cause water spill-over water tank to cause water resource waste.How the water level in water tank is monitored, avoids water to overflow, be people be badly in need of solving.
Summary of the invention
Cannot the water level of its water tank of automatic monitoring when the object of the invention is to overcome the equipment use such as water barrow, fire truck, and cause the defect of water resource waste, a kind of water-level alarm circuit can monitored the water level in water tank is provided.
Object of the present invention is achieved through the following technical solutions: a kind of water-level alarm circuit, by hummer BL, water level detection circuit, the delay circuit be connected with water level detection circuit output terminal, the mu balanced circuit be connected with delay circuit output terminal, the warning circuit be connected with circuit output end of pressure-stabilizing, and the noise reduction indicating circuit be connected with warning circuit output terminal forms.The output terminal of described noise reduction indicating circuit is connected with hummer BL.
Further, described water level detection circuit comprises float switch S, resistance R1, diode D1, electric capacity C1.Its P pole is got back in the N pole of diode D1 after float switch S and resistance R1 and electric capacity C1, and the P pole of described diode D1 is connected with delay circuit respectively with N pole.The common port of diode D1 and float switch S is as an input end of circuit, and the common end of resistance R1 and electric capacity C1 is then as another input end of circuit.
Described delay circuit by time base chip U, electric capacity C3, one end with time base chip U VCC pin be connected, the resistance R2 that the other end is connected with mu balanced circuit with the N pole of diode D1 simultaneously, one end is connected with delay circuit RST pin, the resistance R3 that the other end is connected with mu balanced circuit with the N pole of diode D1 simultaneously, N pole with time base chip U OUT pin be connected, the diode D2 that P pole is connected with mu balanced circuit with the N pole of diode D1 after electric capacity C3 simultaneously, and one end with time base chip U CVOLT pin be connected, the other end forms with the electric capacity C2 that resistance R1 is connected with tie point and the warning circuit of electric capacity C1 simultaneously.Time described the THR pin of base chip U be connected with the P pole of diode D1 respectively with TRIG pin, ENG pin ground connection, the P pole of diode D2 is also connected with mu balanced circuit.
Described mu balanced circuit by voltage stabilizing diode D3, the electric capacity C4 be in parallel with voltage stabilizing diode D3, and one end is connected with the P pole of voltage stabilizing diode D3, the other end forms with the resistance R4 that electric capacity C3 is connected with tie point and the warning circuit of resistance R3 simultaneously.The P pole of described voltage stabilizing diode D3 is also connected with warning circuit, N pole is also connected with the P pole of diode D2.
Described warning circuit comprises triode VT1, resistance R5, diode D4, relay K.Triode VT1 base stage is connected with the P pole of voltage stabilizing diode D3 after resistance R5, emitter is connected with noise reduction indicating circuit after the normally opened contact K-1 of relay K, collector is connected with the tie point of electric capacity C2 and electric capacity C1 and noise reduction indicating circuit after relay K simultaneously, diode D4 and relay K are in parallel.The emitter of described triode VT1 is also connected with the tie point of electric capacity C3 with resistance R4.
Described noise reduction indicating circuit comprises button SB, resistance R6, pilot lamp L, relay K 1, diode D5.The positive pole of relay K 1 is connected with one end of its normally closed contact K1-2 after button SB, negative pole is connected with the P pole of diode D4; The other end of the normally closed contact K1-2 of described relay K 1 is then as an output terminal of circuit, resistance R6 is in parallel with relay K 1 after connecting with pilot lamp L again, as another output terminal of circuit while the N pole of diode D5 is connected with the tie point of the normally closed contact K1-2 of relay K 1 with button SB after the normally opened contact K1-1 of relay K 1, P pole is connected with relay K 1 negative pole, the N pole of described diode D5 is also connected with the positive pole of relay K 1, and button SB is connected with the normally opened contact K-1 of relay K with the tie point of the normally closed contact K1-2 of relay K 1.
The present invention comparatively prior art compares, and has the following advantages and beneficial effect:
(1) one-piece construction of the present invention is comparatively simple, manufactures cost lower.
(2) the present invention is provided with water level detection circuit, it can detect the water level of water tank, to be given the alarm signal, notify that people's water tank is filled it up with when Water in Water Tank is full by warning circuit, enable people close water valve in time, avoid water to overflow and cause water resource waste.
(3) the present invention is provided with delay circuit, can avoid in the process of water level decreasing, and water level occurs fluctuation and causes interrupted warning, affects the correct judgement of people to water level.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment
As shown in Figure 1, water-level alarm circuit of the present invention, by hummer BL, water level detection circuit 1, the delay circuit 2 be connected with water level detection circuit 1 output terminal, the mu balanced circuit 3 be connected with delay circuit 2 output terminal, the warning circuit 4 be connected with mu balanced circuit 3 output terminal, and the noise reduction indicating circuit 5 be connected with warning circuit 4 output terminal forms.The output terminal of described noise reduction indicating circuit 5 is connected with hummer BL.
Further, in order to water level when water tank adds water can be detected, confirm when water tank is filled it up with, thus be provided with water level detection circuit 1.Described water level detection circuit 1 comprises float switch S, resistance R1, diode D1, electric capacity C1.Its P pole is got back in the N pole of diode D1 after float switch S and resistance R1 and electric capacity C1, i.e. float switch S, resistance R1, diode D1, electric capacity C1 form primary Ioops.The P pole of described diode D1 is connected with delay circuit 2 respectively with N pole.The common port of diode D1 and float switch S is as an input end of circuit, and the common end of resistance R1 and electric capacity C1 is then as another input end of circuit.
Described delay circuit 2 by time base chip U, electric capacity C3, one end with time base chip U VCC pin be connected, the resistance R2 that the other end is connected with mu balanced circuit 3 with the N pole of diode D1 simultaneously, one end is connected with delay circuit RST pin, the resistance R3 that the other end is connected with mu balanced circuit 3 with the N pole of diode D1 simultaneously, N pole with time base chip U OUT pin be connected, the diode D2 that P pole is connected with mu balanced circuit 3 with the N pole of diode D1 after electric capacity C3 simultaneously, and one end with time base chip U CVOLT pin be connected, the other end forms with the electric capacity C2 that resistance R1 is connected with tie point and the warning circuit 4 of electric capacity C1 simultaneously.Time described the THR pin of base chip U be connected with the P pole of diode D1 respectively with TRIG pin, ENG pin ground connection, the P pole of diode D2 is also connected with mu balanced circuit 3.
In order to ensure the stability of circuit voltage, in circuit, be provided with mu balanced circuit 3.Described mu balanced circuit 3 by voltage stabilizing diode D3, electric capacity C4, and resistance R4 forms.Electric capacity C4 and voltage stabilizing diode D3 is in parallel, and the N pole of voltage stabilizing diode D3 is connected with the P pole of diode D2, its P pole is then connected with the tie point of electric capacity C3 and resistance R3 and warning circuit 4 after resistance R4 simultaneously.The P pole of described voltage stabilizing diode D3 is also connected with warning circuit 4.
Described warning circuit 4 is by triode VT1, and relay K, the diode D4 be in parallel with relay K, the resistance R5 that one end is connected with the P pole of voltage stabilizing diode D3, the other end is connected with the base stage of triode VT1 forms.The collector of described triode VT1 after relay K simultaneously with the tie point of electric capacity C2 and electric capacity C1 and noise reduction indicating circuit 5 is connected, emitter is connected with noise reduction indicating circuit 5 after the normally opened contact K-1 of relay K, its emitter is also connected with the tie point of electric capacity C3 with resistance R4 simultaneously.
Described noise reduction indicating circuit 5 comprises button SB, resistance R6, pilot lamp L, relay K 1, diode D5.The positive pole of relay K 1 is connected with one end of its normally closed contact K1-2 after button SB, negative pole is connected with the P pole of diode D4.The other end of the normally closed contact K1-2 of described relay K 1 is then as an output terminal of circuit, resistance R6 is in parallel with relay K 1 after connecting with pilot lamp L again, as another output terminal of circuit while the N pole of diode D5 is connected with the tie point of the normally closed contact K1-2 of relay K 1 with button SB after the normally opened contact K1-1 of relay K 1, P pole is connected with relay K 1 negative pole, the N pole of described diode D5 is also connected with the positive pole of relay K 1, and button SB is connected with the normally opened contact K-1 of relay K with the tie point of the normally closed contact K1-2 of relay K 1.
Hummer BL is then serially connected between two output terminals of noise reduction indicating circuit.
Described float switch S is arranged in water tank, and near tank port, all the other parts of circuit are then arranged on outside water tank.When water level is lower, float switch S is in off-state, time base chip U OUT pin be noble potential, triode VT1 does not work, and relay K must not remain open state by its normally opened contact of electricity K-1, and circuit does not work.
Water tank, when adding water, touches float switch S when water level rises to and limits position, and ball float is opened S and closed closed, time base chip OUT pin transfer electronegative potential to, triode VT1 conducting electric capacity C3 charges rapidly.Relay K obtains electric work simultaneously, and its normally opened contact K-1 closes, and circuit is started working, and hummer BL starts alarm water and fills it up with.People close water valve and to push button SB simultaneously, relay K 1 electric work, its normally closed contact K1-2 disconnects, hummer BL stop alarm, while its normally opened contact K1-1 close pilot lamp L and light.
When water barrow, fire truck work, water level starts to decline, and float switch S disconnects.Due to electric capacity C3 discharge process, relay K 1 still remains on to obtain electric duty, and its normally closed contact is also still in off-state.After electric capacity C3 electricity discharges, its normally closed contact of relay K 1 dead electricity K1-2 is closed, normally opened contact K1-1 disconnects, and pilot lamp L extinguishes.
During the work of water barrow, fire truck, can there is certain fluctuation in the process of water level decreasing, delay circuit 2 effect in the present invention is triggering floating switch S interrupted when preventing water-level fluctuation, causes buzzer BL also intermittently to report to the police.When after the time delay through delay circuit 2, water level thoroughly lower than float switch, thus will avoid above-mentioned situation.
As mentioned above, just well the present invention can be realized.
Claims (6)
1. a water-level alarm circuit, it is characterized in that: by hummer BL, water level detection circuit (1), the delay circuit (2) be connected with water level detection circuit (1) output terminal, the mu balanced circuit (3) be connected with delay circuit (2) output terminal, the warning circuit (4) be connected with mu balanced circuit (3) output terminal, and the noise reduction indicating circuit (5) be connected with warning circuit (4) output terminal forms; The output terminal of described noise reduction indicating circuit (5) is connected with hummer BL, and warning circuit (4) is also connected with the output terminal of delay circuit (2).
2. a kind of water-level alarm circuit according to claim 1, is characterized in that: described water level detection circuit (1) comprises float switch S, resistance R1, diode D1, electric capacity C1; Its P pole is got back in the N pole of diode D1 after float switch S and resistance R1 and electric capacity C1, and the P pole of described diode D1 is connected with delay circuit (2) respectively with N pole; The common port of diode D1 and float switch S is as an input end of circuit, and the common end of resistance R1 and electric capacity C1 is then as another input end of circuit.
3. a kind of water-level alarm circuit according to claim 2, it is characterized in that: described delay circuit (2) by time base chip U, electric capacity C3, one end with time base chip U VCC pin be connected, the resistance R2 that the other end is connected with mu balanced circuit (3) with the N pole of diode D1 simultaneously, one end is connected with delay circuit RST pin, the resistance R3 that the other end is connected with mu balanced circuit (3) with the N pole of diode D1 simultaneously, N pole with time base chip U OUT pin be connected, the diode D2 that P pole is connected with mu balanced circuit (3) with the N pole of diode D1 after electric capacity C3 simultaneously, and one end with time base chip U CVOLT pin be connected, the other end forms with the electric capacity C2 that resistance R1 is connected with tie point and the warning circuit (4) of electric capacity C1 simultaneously, time described the THR pin of base chip U be connected with the P pole of diode D1 respectively with TRIG pin, ENG pin ground connection, the P pole of diode D2 is also connected with mu balanced circuit (3).
4. a kind of water-level alarm circuit according to claim 3, it is characterized in that: described mu balanced circuit (3) is by voltage stabilizing diode D3, the electric capacity C4 be in parallel with voltage stabilizing diode D3, and one end is connected with the P pole of voltage stabilizing diode D3, the other end forms with the resistance R4 that electric capacity C3 is connected with tie point and the warning circuit (4) of resistance R3 simultaneously; The P pole of described voltage stabilizing diode D3 is also connected with warning circuit (4), N pole is also connected with the P pole of diode D2.
5. a kind of water-level alarm circuit according to claim 4, is characterized in that: described warning circuit (4) comprises triode VT1, resistance R5, diode D4, relay K; The base stage of triode VT1 is connected with the P pole of voltage stabilizing diode D3 after resistance R5, emitter is connected with noise reduction indicating circuit (5) after the normally opened contact K-1 of relay K, collector is connected with the tie point of electric capacity C2 and electric capacity C1 and noise reduction indicating circuit (5) after relay K simultaneously, and diode D4 and relay K are in parallel; The emitter of described triode VT1 is also connected with the tie point of electric capacity C3 with resistance R4.
6. a kind of water-level alarm circuit according to claim 5, is characterized in that: described noise reduction indicating circuit (5) comprises button SB, resistance R6, pilot lamp L, relay K 1, diode D5; The positive pole of relay K 1 is connected with one end of its normally closed contact K1-2 after button SB, negative pole is connected with the P pole of diode D4; The other end of the normally closed contact K1-2 of described relay K 1 is then as an output terminal of circuit, resistance R6 is in parallel with relay K 1 after connecting with pilot lamp L again, as another output terminal of circuit while the N pole of diode D5 is connected with the tie point of the normally closed contact K1-2 of relay K 1 with button SB after the normally opened contact K1-1 of relay K 1, P pole is connected with relay K 1 negative pole, the N pole of described diode D5 is also connected with the positive pole of relay K 1, and button SB is connected with the normally opened contact K-1 of relay K with the tie point of the normally closed contact K1-2 of relay K 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410465626.XA CN104215301A (en) | 2014-09-12 | 2014-09-12 | Water level alarming circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410465626.XA CN104215301A (en) | 2014-09-12 | 2014-09-12 | Water level alarming circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104215301A true CN104215301A (en) | 2014-12-17 |
Family
ID=52097031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410465626.XA Pending CN104215301A (en) | 2014-09-12 | 2014-09-12 | Water level alarming circuit |
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| Country | Link |
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| CN (1) | CN104215301A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111441933A (en) * | 2020-04-14 | 2020-07-24 | 朱书林 | Automatic control system and control method for water pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87203169U (en) * | 1987-04-09 | 1987-12-30 | 王永生 | Digital fluid level display |
| CN201993141U (en) * | 2010-12-14 | 2011-09-28 | 河南省电力公司平顶山供电公司 | Condensing tower liquid-level notification device |
| CN102954821A (en) * | 2011-08-29 | 2013-03-06 | 海洋王照明科技股份有限公司 | Water level warning circuit |
| CN103162767A (en) * | 2011-12-13 | 2013-06-19 | 西安广融电气有限公司 | Water level alarm circuit |
-
2014
- 2014-09-12 CN CN201410465626.XA patent/CN104215301A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87203169U (en) * | 1987-04-09 | 1987-12-30 | 王永生 | Digital fluid level display |
| CN201993141U (en) * | 2010-12-14 | 2011-09-28 | 河南省电力公司平顶山供电公司 | Condensing tower liquid-level notification device |
| CN102954821A (en) * | 2011-08-29 | 2013-03-06 | 海洋王照明科技股份有限公司 | Water level warning circuit |
| CN103162767A (en) * | 2011-12-13 | 2013-06-19 | 西安广融电气有限公司 | Water level alarm circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111441933A (en) * | 2020-04-14 | 2020-07-24 | 朱书林 | Automatic control system and control method for water pump |
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Application publication date: 20141217 |
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