CN208075975U - A kind of cistern water level warning device - Google Patents
A kind of cistern water level warning device Download PDFInfo
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- CN208075975U CN208075975U CN201820032970.3U CN201820032970U CN208075975U CN 208075975 U CN208075975 U CN 208075975U CN 201820032970 U CN201820032970 U CN 201820032970U CN 208075975 U CN208075975 U CN 208075975U
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- water level
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Abstract
The utility model discloses a kind of cistern water level warning devices, including power circuit, the input terminal of the power circuit is connect with external power supply, further include water level detection circuit and water level indicating circuit, the output end of the power circuit and the input terminal of water level detection circuit connect, and the output end of the power circuit is also connect with the input terminal of the water level indicating circuit.The cistern water level warning device of the utility model is when water tank lacks water may influence cooling system normal operation, it can be achieved that monitoring and sending out in real time the safety of alarm, protection cooling system and user.
Description
Technical field
The utility model is related to Technology of Level Detection fields, more particularly to a kind of cistern water level warning device.
Background technology
Level sensing is widely used in the water tank of civil buildings and the water tank of auto industry engine-cooling system.With
The rapid development of computer technology and modern communication technology, water-level alarm function can combine computer technology and the communication technology
User is allow to understand the situation of oneself vehicle whenever and wherever possible.Level alarm for water is that the technologies such as sensor, hardware, software are tight
The product of close combination.
But existing car engine cooling system, water tank monitoring and warning device are not yet specially set.When water tank leaks
When water or other reasons cause cistern water level to be less than safety value, engine, which continues to run with, can be such that engine self-temperature quickly rises
Height, it occur frequently that the open fires accident such as self-burning of vehicle.
Vehicle user routine use vehicle does not understand the parameter of engine system too much, as science and technology is continuous with information
Development, if having cistern water level monitoring and warning function engine system become more and more important.
Major part engine-cooling system is that temperature is higher than setting value at present, and cooling system starts to start, and is allowed to cool water
Temperature maintain within the scope of one, but in water tank water level height without detection protective device.It is susceptible to failure or cooling system
System can not be run, and there are security risks.
Therefore, existing water level detecting technology has yet to be improved and developed.
Invention content
For the utility model for the technical problem present on, cooling system may influenced just in water tank lacks water by providing one kind
Often when operation, it can monitor in real time and send out alarm to protect the cistern water level warning device of cooling system and user security.
The utility model embodiment provide technical solution be：A kind of cistern water level warning device, including power supply are provided
The input terminal of circuit, the power circuit is connect with external power supply, further includes water level detection circuit and water level indicating circuit, the electricity
The input terminal of the output end of source circuit and water level detection circuit connects, the output end of the power circuit also with the water level indicating circuit
Input terminal connection.
Wherein, which includes first resistor, second resistance, 3rd resistor and first switch pipe, this
The output end of one end of one resistance and power circuit connects, which is sequentially connected in series second resistance and 3rd resistor, this
One end of three resistance connects second resistance, and the other end of the 3rd resistor is connected to ground, the second resistance and the 3rd resistor
Tie point is also connect with the first end of the first switch pipe.
In one embodiment, which includes the first voltage-stabiliser tube, second switch pipe and alarm, this second
The first end of switching tube is connect with the third end of the first switch pipe, the second end of the second switch pipe and first voltage-stabiliser tube
Anode connection, the cathode of first voltage-stabiliser tube are connected to ground；The third end of the second switch pipe is connect with one end of the alarm,
The other end of the alarm and the output end of power circuit connect.
In another embodiment, which includes the first voltage-stabiliser tube, second switch pipe and relay, this
The first end of two switching tubes is connect with the third end of the first switch pipe, the second end of the second switch pipe and first voltage-stabiliser tube
Anode connection, the cathode of first voltage-stabiliser tube is connected to ground；The third end of the second switch pipe and the coil of the relay
One end connects, and the other end of the coil of the relay and the output end of power circuit connect.
The cistern water level detection circuit further includes two copper rods being inserted into water tank, formed between two copper rods this
One resistance.
When two copper rod and water level contact, the Standard resistance range which forms is 10 kilohms to 30 kilo-ohms
Nurse；When two copper rod and the water level are not in contact with, the resistance value which forms is infinity.
When two copper rod and the water level contact, first switch pipe conducting, the second switch pipe is not turned on；When this two
When copper rod is not contacted with the water level, which is not turned on, second switch pipe conducting.
Preferably, which includes bridge rectifier filter circuit and three-terminal voltage-stabilizing circuit.
The three-terminal voltage-stabilizing circuit includes the second voltage-stabiliser tube and voltage regulation unit, which is protection diode, one
End is connected to the output end of the bridge rectifier filter circuit, and the other end is connected to the output end of the voltage regulation unit.
As the alternative solution of the power circuit, the Switching Power Supply which is 12 volts.
The advantageous effect of the utility model embodiment is：The cistern water level warning device of the present embodiment is by being arranged water level
Detection circuit and water level indicating circuit so that when water tank lacks water may influence cooling system normal operation, reality is supervised in real time
It surveys concurrent responding and responds with protection cooling system and the safety of user.The water level monitoring of the cistern water level warning device of the present embodiment
Circuit is electrically conductive forming the resistance of water conduction and realizes detection using a pair of of copper rod as sensor, the water level between copper rod is monitored, for example,
Copper rod contacts to form 10 kilohms to 30 kilohms water conductive resistances, when which does not contact with water level, two bronze medals with water level
Infinite between stick, thus copper rod whether contact the change in resistance of water level obviously can accurate sensed water level variation.This
The cistern water level warning device circuit operation of embodiment is reliable, is hindered by water conduction and realizes detection, makes cistern water level warning device
Cost reduction.
Description of the drawings
Fig. 1 is the first embodiment circuit diagram of the utility model embodiment cistern water level warning device；And
Fig. 2 is the second embodiment circuit diagram of the utility model embodiment cistern water level warning device.
Specific implementation mode
It is right below in conjunction with the accompanying drawings to make the purpose, technical scheme and advantage of the utility model embodiment be more clearly understood
The utility model embodiment is described in further detail.Here, the exemplary embodiment of the utility model and the description thereof are for solving
The utility model is released, but is not intended to limit the scope of the present invention.
Referring to FIG. 1, the cistern water level warning device of the present embodiment, including power circuit.In the present embodiment, power supply electricity
Road includes bridge rectifier filter circuit 10 and three-terminal voltage-stabilizing circuit 20.Water level detection circuit 30 and water level indicating circuit 40.It should
The input terminal of power circuit is connect with external power supply, and the output end of the power circuit connects with the input terminal of water level detection circuit 30
It connects, the output end of the power circuit is also connect with the input terminal of the water level indicating circuit 40.
The three-terminal voltage-stabilizing circuit 20 includes the second voltage-stabiliser tube D2 and voltage regulation unit U1, and second voltage-stabiliser tube D2 is two poles of protection
Pipe, one end are connected to the output end of the bridge rectifier filter circuit 10 and the input terminal of voltage regulation unit U1, and the other end connects
It is connected to the output end of voltage regulation unit U1.
Second voltage-stabiliser tube D2 is protection diode, and when normal work, which is higher than
Output end, second voltage-stabiliser tube D2 reversely end, and work as circuit abnormality, or reverse impulse voltage occur, and output end voltage is higher than defeated
When entering to hold, second voltage-stabiliser tube D2 conductings avoid backward voltage from being added on voltage regulation unit U1, to play the work of protection voltage-stablizer
With.
In another embodiment of power circuit, which can be 12 volts of Switching Power Supply.Also that is, the bridge-type is whole
Stream filter circuit 10 and the three-terminal voltage-stabilizing circuit 20 are replaced with 12 volts of Switching Power Supplies.
The bridge rectifier filter circuit 10 includes rectifier bridge W1, the first capacitance C1, the second capacitance C2.The bridge rectifier filters
The output voltage of circuit is 20 volts of direct current.The three-terminal voltage-stabilizing circuit 20 include third capacitance C3, voltage regulation unit U1 with
And second voltage-stabiliser tube D2.
The water level detection circuit 30 includes first resistor RX, second resistance R2,3rd resistor R3 and first switch pipe Q1,
The water level detection circuit 30 provides warning drive signal.First resistor RX is sequentially connected in series second resistance R2 and 3rd resistor R3,
One end of 3rd resistor R3 connects second resistance R2, and the other end of 3rd resistor R3 is connected to ground, second resistance R2 with
The tie point of 3rd resistor R3 is connect with the first end of first switch pipe Q1.
The water level indicating circuit 40 includes second switch pipe Q2, alarm LS1, the first voltage-stabiliser tube D1.Wherein first resistor
RX is water conductive resistance.
The cistern water level detection circuit 30 further includes two copper rod (not shown) being inserted into water tank, two copper rods it
Between form first resistor RX.
Wherein, when two copper rod and water level contact, Standard resistance range that first resistor RX is formed be 10 kilohms extremely
30 kilohms；When two copper rod and the water level are not in contact with, the resistance value that first resistor RX is formed is infinity.Together
When, when two copper rod is contacted with the water level, first switch pipe Q1 conductings, second switch pipe Q2 is not turned on；When this two
Copper rod and the water level not in contact with when, first switch pipe Q1 is not turned on, second switch pipe Q2 conductings.
It is to be inserted into from water tank upper using two copper rods, after copper rod is contacted with water, RX resistance values are about 10 kilohms to 30,000
Ohm.Q2 is connected at this time, and Q1 is not turned on, and buzzer is not named.When water level is relatively low, RX is infinity.Q2 is not turned at this time, and Q1 is led
Logical, buzzer energization is sent out.
Referring to FIG. 1, one end of the first resistor RX of the water level detection circuit 30 and the output end of power circuit connect, it should
The other end of first resistor RX is connect with one end of second resistance R2, other end and the 3rd resistor R3 of second resistance R2
One end connection, the other end of 3rd resistor R3 is connected to ground, and the tie point of second resistance R2 and 3rd resistor R3 is also
It is connect with the first end of first switch pipe Q1.
In the first embodiment of the present embodiment cistern water level warning device, which includes the 4th resistance
R4, second switch pipe Q2, alarm LS1 and the first voltage-stabiliser tube D1.One end of 4th resistance R4 and the power circuit
Output end connects, the other end of the 4th resistance R4 be connected respectively to first switch pipe Q1 third end and this second open
Close the first end of pipe Q2.The first end of second switch pipe Q2 is also connect with the third end of first switch pipe Q1.This second is opened
The second end for closing pipe Q2 is connect with the anode of first voltage-stabiliser tube D1, and the cathode of first voltage-stabiliser tube D1 is connected to ground；This second
The third end of switching tube Q2 is connect with one end of alarm LS1, the output end of the other end and power circuit of alarm LS1
Connection.
Referring to FIG. 2, showing the second embodiment circuit diagram of the present embodiment cistern water level warning device.In the embodiment
In, which includes the 4th resistance R4, the first voltage-stabiliser tube D1, second switch pipe Q2 and relay L1/K1.It should
One end of 4th resistance R4 is connect with the output end of the power circuit, the other end of the 4th resistance R4 be connected respectively to this
The first end of the third end of one switching tube Q1 and second switch pipe Q2.The first end of second switch pipe Q2 also with this first
The third end of switching tube Q1 connects.The second end of second switch pipe Q2 is connect with the anode of first voltage-stabiliser tube D1, this first
The cathode of voltage-stabiliser tube D1 is connected to ground.The coil at the third end of second switch pipe Q2 and the electromagnetic component of relay L1/K1
One end of L1 connects, and the other end of the coil L1 of the electromagnetic component of relay L1/K1 and the output end of power circuit connect.
In a second embodiment, the contact K1 of relay L1/K1 is connected in power supply unit major loop B1, is lacked in water tank
In the case of water, the cistern water level warning device can automatic off device power supply, unattended effect can be played.
In the present embodiment, 1 foot and 3 feet of rectifier bridge W1 connect the external power supply of 14 volts of exchange.2 feet of rectifier bridge W1 with
The 1 foot phase of first capacitance C1 that is, the anode of electrolytic capacitor, the second capacitance C2, the cathode of the second voltage-stabiliser tube D2, voltage regulation unit U1
Even, 4 feet of rectifier bridge W1 are connected with another foot of the cathode of the first capacitance C1,2 feet of voltage regulation unit U1 and the second capacitance C2.
Rectifier bridge W1, the first capacitance C1, the second capacitance C2 form bridge rectifier filter circuit.Third capacitance C3, voltage regulation unit U1,
Second voltage-stabiliser tube D2 forms 12 volts of regulator circuit.Second resistance R2,3rd resistor R3, first resistor RX, that is, water is led
It connects between resistance RX, water level detection circuit 30 is constituted in conjunction with first switch pipe Q1.The water level indicating circuit 40 and should
Water level indicating circuit 50 is used to provide warning drive signal.For example, the second switch pipe Q2 of the water level indicating circuit 40, alarm
Device LS1 and the first voltage-stabiliser tube D1 form warning circuit.First resistor RX is the resistance that water is electrically conductive forming.In practical application
In, it is inserted into from water tank upper using two copper rods, after copper rod is contacted with water level, the resistance value of first resistor RX is about 10 kilo-ohms
Nurse is to 30 kilohms.Second switch pipe Q2 is connected at this time, and first switch pipe Q1 is not turned on, and buzzer is not named.When water level compared with
When low, first resistor RX is infinity.Second switch pipe Q2 is not turned at this time, first switch pipe Q1 conductings, alarm
LS1, such as buzzer energization send out alarm.
The cistern water level warning device of the present embodiment is by being arranged water level detection circuit and water level indicating circuit so that
When water tank lacks water may influence cooling system normal operation, reality monitors concurrent responding and responds with protection cooling system and use in real time
The safety at family.The water level monitoring circuit of the cistern water level warning device of the present embodiment is used as monitoring sensor using a pair of of copper rod,
It is identified by the resistance variations between copper rod and sensed water level, copper rod contacts to form 10 kilohms to 30 kilohms with water level
Water conductive resistance, when which does not contact with water level, the infinite between two copper rods, therefore whether copper rod contacts aqueous
The change in resistance in face obviously can accurate sensed water level variation.The cistern water level warning device circuit operation of the present embodiment is reliable, borrows
It helps the water conduction resistance that water level is formed to realize detection, makes the cost reduction of device.
The foregoing is merely the embodiments of the utility model, and it does not limit the scope of the patent of the present invention, all
It is equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, directly or indirectly uses
In other related technical areas, it is equally included in the patent within the scope of the utility model.
Claims (10)
1. a kind of cistern water level warning device, including power circuit, the input terminal of the power circuit are connect with external power supply,
It is characterized in that, further includes water level detection circuit and water level indicating circuit, output end and the water level detecting electricity of the power circuit
The input terminal on road connects, and the output end of the power circuit is also connect with the input terminal of the water level indicating circuit.
2. cistern water level warning device as described in claim 1, it is characterised in that：The water level detection circuit includes the first electricity
Resistance, second resistance, 3rd resistor and first switch pipe, one end of the first resistor and the output end of power circuit connect,
The first resistor is sequentially connected in series second resistance and 3rd resistor, and one end of the 3rd resistor connects the second resistance, institute
The other end for stating 3rd resistor is connected to ground, the tie point of the second resistance and the 3rd resistor also with the first switch
The first end of pipe connects.
3. cistern water level warning device as claimed in claim 2, it is characterised in that：The water level indicating circuit includes first steady
Pressure pipe, second switch pipe and alarm, the first end of the second switch pipe are connect with the third end of the first switch pipe,
The second end of the second switch pipe is connect with the anode of first voltage-stabiliser tube, and cathode and the ground of first voltage-stabiliser tube connect
It connects；The third end of the second switch pipe is connect with one end of the alarm, the other end and power circuit of the alarm
Output end connection.
4. cistern water level warning device as claimed in claim 2, it is characterised in that：The water level indicating circuit includes first steady
Pressure pipe, second switch pipe and relay, the first end of the second switch pipe are connect with the third end of the first switch pipe,
The second end of the second switch pipe is connect with the anode of first voltage-stabiliser tube, and cathode and the ground of first voltage-stabiliser tube connect
It connects；The third end of the second switch pipe is connect with one end of the coil of the relay, the coil of the relay it is another
End is connect with the output end of power circuit.
5. the cistern water level warning device as described in claim 2-4 any one, it is characterised in that：Further include being inserted in water tank
Two copper rods entered form the first resistor between two copper rods.
6. cistern water level warning device as claimed in claim 5, it is characterised in that：It is contacted with water level in two copper rod
When, the Standard resistance range that the first resistor is formed is 10 kilohms to 30 kilohms；When two copper rod does not have with the water level
When having contact, the resistance value that the first resistor is formed is infinity.
7. cistern water level warning device as described in claim 3 or 4, it is characterised in that：When two copper rods and water level contact,
The first switch pipe conducting, the second switch pipe are not turned on；It is described when two copper rod and the water level do not contact
First switch pipe is not turned on, the second switch pipe conducting.
8. cistern water level warning device as claimed in claim 7, it is characterised in that：The power circuit includes bridge rectifier filter
Wave circuit and three-terminal voltage-stabilizing circuit.
9. cistern water level warning device as claimed in claim 8, it is characterised in that：The three-terminal voltage-stabilizing circuit includes second steady
Pressure pipe and voltage regulation unit, second voltage-stabiliser tube are protection diode, and one end is connected to the bridge rectifier filter circuit
Output end, the other end are connected to the output end of the voltage regulation unit.
10. cistern water level warning device as claimed in claim 7, it is characterised in that：The switch that the power circuit is 12 volts
Power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820032970.3U CN208075975U (en) | 2018-01-09 | 2018-01-09 | A kind of cistern water level warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820032970.3U CN208075975U (en) | 2018-01-09 | 2018-01-09 | A kind of cistern water level warning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208075975U true CN208075975U (en) | 2018-11-09 |
Family
ID=64034952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820032970.3U Active CN208075975U (en) | 2018-01-09 | 2018-01-09 | A kind of cistern water level warning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208075975U (en) |
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2018
- 2018-01-09 CN CN201820032970.3U patent/CN208075975U/en active Active
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