CN201497544U

CN201497544U - Water level detector

Info

Publication number: CN201497544U
Application number: CN2009203039239U
Authority: CN
Inventors: 莫家贤
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-06-02
Filing date: 2009-06-02
Publication date: 2010-06-02
Anticipated expiration: 2019-06-02

Abstract

The utility model provides a water level detector comprising an upper water level detector and a low water level detector, wherein the upper and the low water level detectors are connected respectively with a controller, the upper water level detector is provided with an upper water level capacitance sensing electrode, the lower water level detector is provided with a lower water level capacitance sensing electrode, and the controller controls an upper water level detection unit and a low water level detection unit to carry out water level detection while instructing detection results. The upper water level detector and the low water level detector arranged on the product can detect the upper water level and the low water level respectively, thereby enlarging the applicable scope for the utility model, and enabling the utility model to meet different use requirements. Moreover, the adoption of the manner of capacitance sensing in detection can prevent the elements of the detector from failure, thereby extending the service life of the utility model and facilitating the use of the utility model.

Description

A kind of water level detector

Technical field

The utility model relates to a kind of water level detector, particularly a kind of water level detector that can detect upper and lower water level.

Background technology

Present condensate tank of dehumidifier on the market, generally be to change with water surface elevation by ball float or buoy to detect, or immersing by electrode that conducting detects in the water, its ubiquitous problem is: the pick-up unit that has can only detect water level, and can not detect down water level, the pick-up unit that has can only detect down water level, and can not detect water level, therefore inconvenience to some extent in the use can not be satisfied some occasion, should detect water level, detect the requirement of water level down again; And, on electrode, produce incrustation scale easily for the condensate tank of dehumidifier that adopts electric pole type, cause malfunctioningly, be unfavorable for using.

Summary of the invention

At the problems referred to above, the utility model provides a kind of can detect the water level detector that water level and following water are.

The utility model is that the technical scheme that its technical matters of solution is adopted is:

A kind of water level detector, it comprises water level detector and following water level detector, the described water level detector of going up is connected controller respectively with following water level detector, the described water level detector of going up is provided with water level capacitive sensing electrode, described water level detector down is provided with down water level capacitive sensing electrode, the control of described controller go up the water-level detecting unit and down the water-level detecting unit carry out water level detecting, and indication testing result.

Further improvement as such scheme, described controller comprises control module, voltage threshold detection module and power supply, described voltage threshold detection module and power supply be link control module respectively, described control module connects upward water level detector and water level detector down, described voltage threshold detection module testing voltage, when operating voltage was lower than detection threshold, output signal was carried out under-voltage prompting to control module.

The beneficial effects of the utility model are: this product is provided with water level detector and reaches water level detector down, can detect water level and following water level respectively, make usable range wider, satisfied different user demands, and, adopt the mode of capacitive sensing to detect, detector element is not easy to lose efficacy, improved the life-span, more helped using.In addition, the voltage threshold detection module that this product is equipped with can detect operating voltage, so that prompting when operating voltage is not enough helps the user and knows duty, the operate as normal of guaranteed water level detector.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the circuit theory diagrams of controller;

Fig. 3 is the circuit theory diagrams of last water level detector.

Embodiment

With reference to Fig. 1, a kind of water level detector, it comprises water level detector 2 and following water level detector 3, the described water level detector 2 of going up is connected controller 1 respectively with following water level detector 3, the described water level detector 2 of going up is provided with water level capacitive sensing electrode 21, described water level detector 3 down is provided with down water level capacitive sensing electrode 31, described last water-level detecting unit 2 of controller 1 control and following water-level detecting unit 3 carry out water level detecting, water-level detecting unit 2 reaches the signal of water-level detecting unit 3 down in the reception, and the indication testing result.Reach water level detector 3 down owing to be provided with water level detector 2, can detect water level and following water level respectively, make usable range wider, satisfied different user demands, and, adopt the mode of capacitive sensing to detect, detector element is not easy to lose efficacy, improved the life-span, more helped using.

With reference to Fig. 2, described controller 1 comprises control module 11, voltage threshold detection module 12 and power supply 13, described voltage threshold detection module 12 and power supply 13 be link control module 11 respectively, described control module connects upward water level detector 2 and water level detector 3 down, described voltage threshold detection module 12 testing voltages, when operating voltage was lower than detection threshold, voltage threshold detection module 12 output states changed, its signal carries out under-voltage prompting to control module 11.Voltage threshold detection module 12 can detect operating voltage, so that prompting when operating voltage is not enough helps the user and knows duty, guarantees the operate as normal of the utility model water level detector.

With reference to Fig. 3, the described water level detector 2 of going up comprises water level capacitive sensing module 22, and the described water level induction electrode 21 of going up connects upward water level capacitive sensing module 22, and the described water level capacitive sensing module 22 that goes up connects controller 1; With reference to Fig. 4, described water level detector 3 down comprises water level capacitive sensing module 32 down in addition, and described water level induction electrode 31 down connects water level capacitive sensing module 32 down, and described water level capacitive sensing module 32 down connects controller 1.

And as embodiment more preferably, described controller 1 is provided with and the last water level detector 2 corresponding water level indicator lights 14 of going up, with 3 corresponding times water level indicator lights 15 of following water level detector.Described controller 1 is provided with under-voltage pilot lamp 16.Can go out various states than visual indication like this.

The utility model adopts the principle of capacitive sensing to carry out water level detecting, and water level capacitive sensing electrode 31 outsides were provided with insulative water-proof material and water isolation under water level capacitive sensing electrode 21 reached on it, can guarantee long-term use, had guaranteed serviceable life.

In more excellent embodiment of the present utility model, described control module 11 is the EM78P153S microprocessor, and described voltage threshold detection module 12 is the HT7024 integrated circuit.The P50 pin of control module 11 connects under-voltage pilot lamp 16, P66 pin and P65/OSCI pin are the level detection point that is connected with water level detector, VDD pin and P63/RST pin are connected with power supply 13, the P62/TCC pin connects the VDD pin of voltage threshold detection module 12, the P60/INT pin connects the OUT pin of voltage threshold detection module 12, VSS pin ground connection, P52 pin connect goes up water level indicator light 14, and the P51 pin connects water level indicator light 15 down.

And water level capacitive sensing module 32 was a TCH01A capacitive sensing integrated circuit under described upward water level capacitive sensing module 22 reached.Wherein, the OUT pin of last water level capacitive sensing module 22 is connected with the level detection point of control module 11, and VSS pin connection power-is extreme, and KEY I pin is the induced key signal input, water level capacitive sensing electrode 21 in the connection, and the VDD pin connects power positive end; The mode of connection of following water level capacitive sensing module 32 is identical with last water level capacitive sensing module 22.

In addition, adopt said elements, described power supply 13 may be selected to be the battery of 3V, for example just can supply with water level detector work with button cell.

Principle of work of the present utility model describes with following embodiment:

The utility model can be used for the cultivation of hydroponic plant, controls the water level of hydroponic plant with the prompting people by the indication of reporting to the police.In use, the induction electrode and the water insulation back of water level detector is under water, the height of responsible sensed water level, wherein, last water level capacitive sensing electrode 21 is arranged at the last water level place that will detect, and following water level capacitive sensing electrode 31 is arranged at the following water level place that will detect.

Water level is crossed low state: after water level detector is started working, when water does not flood water level capacitive sensing electrode 31, promptly going up water level capacitive sensing electrode 21 can not be submerged yet, represent that water level is low excessively this moment, last water level capacitive sensing electrode 21 reaches down, and water level capacitive sensing electrode 31 is low level, controller 1 receives down the low level signal of water level capacitive sensing electrode 31, and water level indicator light 15 is indicated and reminded under then controlling, and is low excessively with the expression water level.

Like this, when water level was lower than water level capacitive sensing electrode 31, following water level indicator light 15 just can luminously be pointed out, and is convenient to the user to know that in time water level is low excessively, carries out respective handling.

Water level normal condition: when under the water flooding during water level capacitive sensing electrode 31, because the effect of water, the electric capacity state of following water level capacitive sensing electrode 31 changes, become high level, controller 1 receives down the high level signal of water level detector 3, control each pilot lamp and do not indicate, represent that water level is normal this moment.

Water level is crossed high state: when water level continues to rise, when flooding water level capacitive sensing electrode 21, the electric capacity state of last water level capacitive sensing electrode 21 changes, the displacement high level, controller 1 receives the high level signal of water level detector 2, water level indicator light 14 is indicated in the control, is expressed as high water stage this moment.

Like this, during water level capacitive sensing electrode 21, last water level indicator light 14 just can luminously be pointed out, and is convenient to the user and knows that in time water level is too high, carries out respective handling on water flooding, stops to continue to add water at once.

In the specific implementation, influence is not too big because high water stage is for hydroponic plant, and when continuing high water stage, people are easy to realize, water level indicator light 14 can be set when each water level reaches specified altitude assignment, at once luminous the indication, and proceed repeatedly glittering after, no longer indicate; Therefore down and water level is low excessively, then can endanger the growth of hydroponic plant, and water level indicator light 15 is crossed when low at each water level, at once luminous the indication, subsequently, when water level continues to be lower than down height of water level, following water level indicator light 15 continues glittering, until people's filled with water is till the ordinary water level.

Certainly, the indicating mode of water level indicator light 15 can be provided with according to concrete operating position under last water level indicator light 14 reached, and different indicating modes can be set, so long as the technological means that is equal to all belongs to protection domain of the present utility model.

In addition, water level detector of the present utility model is when work, also can carry out under-voltage prompting: when supply voltage is lower than the detection threshold of voltage threshold detection module 12, voltage threshold detection module 12 output signals change, control module 11 detects the signal of voltage threshold detection module 12, control under-voltage pilot lamp 16 indications,, in time change power-supply battery so that the user finds the undertension of power supply 13.

In addition, the utility model can also be provided with the mode and the instruction time of various pilot lamp indications easily, and it all can be realized by integrated circuit is set.

Certainly, the invention is not limited to above-mentioned embodiment, as long as it reaches technique effect of the present utility model with essentially identical means, all should belong to protection domain of the present utility model.

Claims

1. water level detector, it is characterized in that: comprise water level detector (2) and following water level detector (3), the described water level detector (2) of going up is connected controller (1) respectively with following water level detector (3), the described water level detector (2) of going up is provided with water level capacitive sensing electrode (21), described water level detector (3) down is provided with down water level capacitive sensing electrode (31), water-level detecting unit (3) carried out water level detecting under water-level detecting unit (2) reached in described controller (1) control, and the indication testing result.

2. a kind of water level detector according to claim 1, it is characterized in that: described controller (1) comprises control module (11), voltage threshold detection module (12) and power supply (13), described voltage threshold detection module (12) and power supply (13) be link control module (11) respectively, described control module connects upward water level detector (2) and water level detector (3) down, described voltage threshold detection module (12) testing voltage, when operating voltage is lower than detection threshold, output signal is carried out under-voltage prompting to control module (11).

3. a kind of water level detector according to claim 1 and 2, it is characterized in that: the described water level detector (2) of going up comprises water level capacitive sensing module (22), described water level capacitive sensing module (22) in water level induction electrode (21) connection, described water level capacitive sensing module (22) the connection controller (1) of going up gone up; Described water level detector (3) down comprises water level capacitive sensing module (32) down, and described water level induction electrode (31) down connects water level capacitive sensing module (32) down, and described water level capacitive sensing module (32) down connects controller (1).

4. a kind of water level detector according to claim 1 is characterized in that: described controller (1) is provided with and the corresponding water level indicator light (14) of going up of last water level detector (2), and and the corresponding water level indicator light (15) down of following water level detector (3); When water level was higher than the height of water level capacitive sensing electrode (21), water level indicator light (14) was indicated in the corresponding control of controller (1); When water level was lower than the height of following water level capacitive sensing electrode (31), water level indicator light (15) was indicated under the corresponding control of controller (1).

5. a kind of water level detector according to claim 2, it is characterized in that: described controller (1) is provided with under-voltage pilot lamp (16), when the operating voltage of power supply (13) supply was lower than the detection threshold of voltage threshold detection module (12), controller (1) was controlled under-voltage pilot lamp (16) and is indicated.

6. a kind of water level detector according to claim 1 is characterized in that: described last water level capacitive sensing electrode (21) and following water level capacitive sensing electrode (31) outside are provided with the insulative water-proof material.

7. a kind of water level detector according to claim 2 is characterized in that: described control module (11) is the EM78P153S microprocessor, and described voltage threshold detection module (12) is the HT7024 integrated circuit.

8. a kind of water level detector according to claim 3 is characterized in that: described upper and lower water level capacitive sensing module (22,32) is a TCH01A capacitive sensing integrated circuit.

9. according to claim 7 or 8 described a kind of water level detectors, it is characterized in that: described power supply (13) is the battery of 3V.