CN204740505U - Low -cost detection of water level warning circuit - Google Patents
Low -cost detection of water level warning circuit Download PDFInfo
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- CN204740505U CN204740505U CN201520458341.3U CN201520458341U CN204740505U CN 204740505 U CN204740505 U CN 204740505U CN 201520458341 U CN201520458341 U CN 201520458341U CN 204740505 U CN204740505 U CN 204740505U
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- switch element
- water level
- electrode
- warning circuit
- resistance
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Abstract
The utility model provides a low -cost detection of water level warning circuit, includes first electrode, second electrode, the control unit, switch element, buzzer and relay, first electrode and second electrode each other insulating and are fixed and are predetermine high department in that water storage device is inside, the input of first electrode connection control unit, second electrode the connect first end of end and the coil linked switch unit through the relay, the one end that the normally closed contact through the relay connects the buzzer, the other end and the ground connection of buzzer are connected to the second of switch element end, and the output of the control end connection control unit of switch element, the control unit are suitable for and are less than the first end of predetermineeing control switch unit when high and the second end disconnection of switch element at the water level, otherwise the second of the first end of control switch unit and switch element is held and is switched on. The utility model provides a low -cost detection of water level warning circuit has reduced detection of water level's cost.
Description
Technical field
The utility model relates to Technology of Level Detection field, particularly a kind of low cost water level detecting warning circuit.
Background technology
Water level detecting is widely used in Industrial Boiler, covil construction millpond, water tower, water tank, and industry inner opening or the airtight storage tank such as petrochemical complex, papermaking, food, wastewater treatment, the level gauging of various liquid in underground pond groove.Along with developing rapidly of computer technology and modern communication technology, level alarm for water develops into intellectuality from plain edition, and the function of level alarm for water trends towards perfect day by day.Level alarm for water is the new technology developed in recent years, the product that several the technology such as it is sensor, hardware, software are combined closely, its effect is the medium quantity observed and control in container, the number of volume is grasped by the height of liquid level, thus reach the object preventing overcharge and grasp liquid storage quantity, can be used for a lot of place and carry out Industry Control.Level alarm for water is studied, is conducive to meeting the growing material requisite of people, by science and technology being applied on water lev el control thus the convenience brought to the actual life of oneself of the development making people really realize science and technology and comfortable.
Existing level alarm for water is made up of detector, Signal transmissions part and alarm controller usually, by detector, water level information is become electronic signal and outwards transmission, by wireless transmission, detector is connected with wireless launcher, once there is alert, will to sending radio signal in the air.Wireless receiver receives signal and produces warning, and the personnel of notice process.But its System's composition of existing level alarm for water is complicated, and cost is higher.
Utility model content
Problem to be solved in the utility model is to provide a kind of low cost water level detecting warning circuit of low cost, gives the alarm when water level is too low, prevents water storage device from occurring the situation that water is most.
For solving the problem, the utility model provides a kind of low cost water level detecting warning circuit, comprises the first electrode, the second electrode, control module, switch element, hummer and relay; Described first electrode and described second electrode mutually insulated and be fixed on the preset height place of water storage device inside, the input end of control module described in described first Electrode connection, described second Electrode connection power end is also connected the first end of described switch element by the coil of described relay, is connected one end of described hummer by the normally closed contact of described relay; Second end of described switch element connects the other end of described hummer and ground connection, the control end of described switch element connects the output terminal of described control module, described control module is suitable for disconnecting at second end of water level lower than the first end and described switch element that control described switch element during described preset height, otherwise controls the first end of described switch element and the second end conducting of described switch element.
When water level is lower than described preset height, described first electrode and described second electrode mutually insulated, the second end triggering the first end and described switch element that described control module controls described switch element disconnects, thus no current flows through the coil of described relay, the normally closed contact of described relay is closed, produce the electric current flowing through described hummer and make described hummer sounding alarm, remind staff to take correspondingly measure to process.The low cost water level detecting warning circuit that the utility model provides adopts easy structure to achieve water level detecting, reduces the cost of water level detecting.
Optionally, described switch element comprises the first resistance and NMOS tube; One end of described first resistance is as the first end of described switch element, the other end of described first resistance connects the drain electrode of described NMOS tube, the source electrode of described NMOS tube is as the second end of described switch element, and the grid of described NMOS tube is as the control end of described switch element.Because metal-oxide-semiconductor has less conducting resistance, loss during its conducting is very little, reduces the power consumption of whole low cost water level detecting warning circuit, also improves the serviceable life of himself.
Optionally, described control module is bleeder circuit.
Optionally, described control module comprises the second resistance and the 3rd resistance; One end of described second resistance as the input end of described control module, the other end of described second resistance connect described 3rd resistance one end and as the output terminal of described control module, the other end ground connection of described 3rd resistance.
Optionally, described low cost water level detecting warning circuit also comprises power supply unit; Described power supply unit connects described power end, is suitable for providing supply voltage.
Optionally, described power supply unit comprises solar panels and accumulator; Described solar panels connect described power end and described accumulator, are suitable for sun power to be converted to electric energy with to described charge in batteries; Described accumulator is suitable for providing described supply voltage.Adopt described solar panels and described storage battery power supply, can avoid changing battery continually.
Optionally, described power supply unit is disposable battery.
Optionally, described power supply unit comprises rectification circuit and storage capacitor; The input end of described rectification circuit is suitable for input ac voltage, and the output terminal of described rectification circuit connects one end of described storage capacitor and described power end, the other end ground connection of described storage capacitor.
Compared with prior art, the utility model has the following advantages:
The low cost water level detecting warning circuit that the utility model provides, by being arranged on the first electrode and the second electrode detection water level of water storage device inside, at water level lower than the first electrode and described second electrode insulation described in during preset height, the normally closed contact of relay is closed, produce the electric current flowing through hummer, thus report to the police.The low cost water level detecting warning circuit that the utility model provides adopts easy structure to achieve water level detecting, reduces the cost of water level detecting.
Accompanying drawing explanation
Fig. 1 is the structural representation of the low cost water level detecting warning circuit of a kind of embodiment of the utility model;
Fig. 2 is the structural representation of the low cost water level detecting warning circuit of the another kind of embodiment of the utility model;
Fig. 3 is the structural representation of the low cost water level detecting warning circuit of another embodiment of the utility model.
Embodiment
Fig. 1 is the structural representation of the low cost water level detecting warning circuit of a kind of embodiment of the utility model, and described low cost water level detecting warning circuit comprises the first electrode E1, the second electrode E2, control module 12, switch element 13, hummer 14 and relay 15.
Particularly, described first electrode E1 and described second electrode E2 mutually insulated and be fixed on the preset height place of water storage device 11 inside.According to the application of reality, described water storage device 11 can be water tank, water tower, solar water heater etc., and described first electrode E1 and described second electrode E2 can be any sheet metal that can conduct electricity.Described preset height can be arranged according to the actual requirements, and the utility model is not construed as limiting this.Described first electrode E1 connects the input end of described control module 12, described second electrode E2 is connected power end VDD and is connected the first end of described switch element 13 by the coil of described relay 15, connected one end of described hummer 14 by the normally closed contact of described relay 15, and described power end VDD is suitable for receiving supply voltage.
Second end of described switch element 13 connects the other end of described hummer 14 and ground connection, the control end of described switch element 13 connects the output terminal of described control module 12, described control module 12 is suitable for disconnecting at second end of water level lower than the first end and described switch element 13 that control described switch element 13 during described preset height, controls the first end of described switch element 13 and the second end conducting of described switch element 13 when water level does not exceed described preset height.
Below the principle of work of the low cost water level detecting warning circuit of the present embodiment is described:
When water level is not less than described preset height, the electric action of water makes described first electrode E1 and described second electrode E2 conducting, supply voltage transfers to described control module 12 by described first electrode E1 and described second electrode E2, described control module 12 controls the first end of described switch element 13 and the second end conducting of described switch element 13, thus have electric current to flow through the coil of described relay 15, the normally closed contact of described relay 15 is disconnected, and described hummer 14 does not work;
When water level is lower than described preset height, described first electrode E1 and described second electrode E2 mutually insulated, supply voltage cannot transfer to described control module 12 by described first electrode E1 and described second electrode E2, the second end triggering the first end and described switch element 13 that described control module 12 controls described switch element 13 disconnects, thus no current flows through the coil of described relay 15, the normally closed contact of described relay 15 is closed, produce the electric current flowing through described hummer 14 and make described hummer 14 sounding alarm, staff is reminded to take correspondingly measure to process.
The low cost water level detecting warning circuit circuit structure of the present embodiment is simple, dependable performance, be easy to realize, and reduces the cost of water level detecting.Below in conjunction with embodiment and accompanying drawing, to the detailed description further of the utility model do, but embodiment of the present utility model is not limited thereto.
Fig. 2 is the structural representation of the low cost water level detecting warning circuit of the another kind of embodiment of the utility model.Compared with the embodiment that Fig. 1 is corresponding, the present embodiment provides a kind of concrete structure of switch element 13 and control module 12.Described switch element 13 comprises the first resistance R1 and NMOS tube Q1, particularly, one end of described first resistance R1 is as the first end of described switch element 13, the other end of described first resistance R1 connects the drain electrode of described NMOS tube Q1, the source electrode of described NMOS tube Q1 is as the second end of described switch element 13, and the grid of described NMOS tube Q1 is as the control end of described switch element 13.
The present embodiment adopts metal-oxide-semiconductor to realize the switching function of described switch element 13, and because metal-oxide-semiconductor has less conducting resistance, loss during its conducting is very little, reduces the power consumption of whole low cost water level detecting warning circuit, also improves the serviceable life of himself.Correspondingly, described control module 12 is can be bleeder circuit.Further, described control module 12 comprises the second resistance R2 and the 3rd resistance R3.One end of described second resistance R2 as the input end of described control module 12, the other end of described second resistance R2 connect described 3rd resistance R3 one end and as the output terminal of described control module 12, the other end ground connection of described 3rd resistance R3.
The low cost water level detecting warning circuit of the present embodiment, when water level exceedes described preset height, the electric action of water makes described first electrode E1 and described second electrode E2 conducting, supply voltage transfers to described control module 12 by described first electrode E1 and described second electrode E2, described second resistance R2 and described second resistance R3 carries out dividing potential drop, the branch pressure voltage produced triggers described NMOS tube Q1 conducting, thus have electric current to flow through the coil of described relay 15, the normally closed contact of described relay 15 is disconnected, and described hummer 14 does not work; When water level does not exceed described preset height, described first electrode E1 and described second electrode E2 mutually insulated, supply voltage cannot transfer to described control module 12, thus described NMOS tube Q1 cut-off, the coil of described relay 15 cannot form path, the normally closed contact of described relay 15 is closed, produces the electric current flowing through described hummer 14 and make described hummer 14 sounding alarm.
It should be noted that, the supply voltage that described power end VDD receives can be provided by the electric supply installation of low cost water level detecting warning circuit outside, also can arrange power supply unit in low cost water level detecting warning circuit inside.If arrange power supply unit in low cost water level detecting warning circuit inside, described power supply unit connects described power end VDD, and it can be disposable battery, also can comprise rectification circuit and storage capacitor.The input end of described rectification circuit is suitable for input ac voltage, and the output terminal of described rectification circuit connects one end of described storage capacitor and described power end VDD, the other end ground connection of described storage capacitor.
Fig. 3 is the structural representation of the low cost water level detecting warning circuit of the another kind of embodiment of the utility model, compared with the embodiment that Fig. 1 is corresponding, the low cost water level detecting warning circuit of the present embodiment comprises power supply unit, and described power supply unit comprises solar panels 31 and accumulator 32.Particularly, described solar panels 31 connect power end VDD and described accumulator 32, are suitable for sun power being converted to electric energy to charge to described accumulator 32; Described accumulator 32 is suitable for providing described supply voltage.Sun power is converted to electric energy and powers by the power supply unit of the present embodiment, is applicable to outdoor water storage device, can avoids changing battery continually.
The above; it is only preferred embodiment of the present utility model; not do any pro forma restriction to the utility model, every any simple modification, equivalent variations done above embodiment according to technical spirit of the present utility model, all falls within protection domain of the present utility model.
Claims (8)
1. a low cost water level detecting warning circuit, is characterized in that, comprises the first electrode, the second electrode, control module, switch element, hummer and relay;
Described first electrode and described second electrode mutually insulated and be fixed on the preset height place of water storage device inside, the input end of control module described in described first Electrode connection, described second Electrode connection power end is also connected the first end of described switch element by the coil of described relay, is connected one end of described hummer by the normally closed contact of described relay;
Second end of described switch element connects the other end of described hummer and ground connection, the control end of described switch element connects the output terminal of described control module, described control module is suitable for disconnecting at second end of water level lower than the first end and described switch element that control described switch element during described preset height, otherwise controls the first end of described switch element and the second end conducting of described switch element.
2. low cost water level detecting warning circuit according to claim 1, it is characterized in that, described switch element comprises the first resistance and NMOS tube;
One end of described first resistance is as the first end of described switch element, the other end of described first resistance connects the drain electrode of described NMOS tube, the source electrode of described NMOS tube is as the second end of described switch element, and the grid of described NMOS tube is as the control end of described switch element.
3. low cost water level detecting warning circuit according to claim 2, is characterized in that, described control module is bleeder circuit.
4. low cost water level detecting warning circuit according to claim 3, is characterized in that, described control module comprises the second resistance and the 3rd resistance;
One end of described second resistance as the input end of described control module, the other end of described second resistance connect described 3rd resistance one end and as the output terminal of described control module, the other end ground connection of described 3rd resistance.
5. the low cost water level detecting warning circuit according to any one of Claims 1-4, is characterized in that, also comprise power supply unit;
Described power supply unit connects described power end, is suitable for providing supply voltage.
6. low cost water level detecting warning circuit according to claim 5, it is characterized in that, described power supply unit comprises solar panels and accumulator;
Described solar panels connect described power end and described accumulator, are suitable for sun power to be converted to electric energy with to described charge in batteries;
Described accumulator is suitable for providing described supply voltage.
7. low cost water level detecting warning circuit according to claim 5, is characterized in that, described power supply unit is disposable battery.
8. low cost water level detecting warning circuit according to claim 5, it is characterized in that, described power supply unit comprises rectification circuit and storage capacitor;
The input end of described rectification circuit is suitable for input ac voltage, and the output terminal of described rectification circuit connects one end of described storage capacitor and described power end, the other end ground connection of described storage capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520458341.3U CN204740505U (en) | 2015-06-30 | 2015-06-30 | Low -cost detection of water level warning circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520458341.3U CN204740505U (en) | 2015-06-30 | 2015-06-30 | Low -cost detection of water level warning circuit |
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| Publication Number | Publication Date |
|---|---|
| CN204740505U true CN204740505U (en) | 2015-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520458341.3U Expired - Fee Related CN204740505U (en) | 2015-06-30 | 2015-06-30 | Low -cost detection of water level warning circuit |
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| CN (1) | CN204740505U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104977061A (en) * | 2015-06-30 | 2015-10-14 | 成都众山科技有限公司 | Electrode type water level alarming system |
-
2015
- 2015-06-30 CN CN201520458341.3U patent/CN204740505U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104977061A (en) * | 2015-06-30 | 2015-10-14 | 成都众山科技有限公司 | Electrode type water level alarming system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151104 Termination date: 20160630 |