CN201725225U

CN201725225U - Noise type water level controller

Info

Publication number: CN201725225U
Application number: CN2010201228775U
Authority: CN
Inventors: 汪孟金; 李玮; 孙浙胜; 朱亮
Original assignee: Ningbo Zhenhai Huatai Electric Factory
Current assignee: Ningbo Zhenhai Huatai Electric Factory
Priority date: 2010-01-29
Filing date: 2010-01-29
Publication date: 2011-01-26
Anticipated expiration: 2020-01-29

Abstract

The utility model discloses a noise type water level controller which consists of a DC power 10, an amplifying circuit 20, a detection circuit 30, a comparison circuit 40, an executive circuit 50, an earthing electrode A3, a low water level electrode AD, a high water level electrode AG and a container AV. The noise type water level controller is characterized in that a noise signal Un in water is adopted to carry out automatic control to the water level in the container AV; the noise signal Un is of an open-circuit state during watering process, and is of a circulating state and is connected with the amplifying circuit 20 during water using process; when the noise signal Un is of the open-circuit state, the normally open contact DH of an actuating apparatus-relay J is disconnected; the normally closed contact DD of the actuating apparatus-relay J is closed, and the load RL of the actuating apparatus-relay J is connected with AC220V; when the noise signal Un is accessed into the amplifying circuit 20, the normally open contact DH of the relay J is closed; the normally closed contact DD of the relay J is disconnected and the load RL of the relay J is disconnected with AC220V. The electrode of the noise type water level controller does not scale and corrode as the inside of the electrode only has a noise current in the water, and does not have an external DC or AC current; therefore, the noise type water level controller runs reliably and stably.

Description

The noise-type water level controller

Technical field

The utility model relates to a kind of noise-type water level controller, relates in particular to a kind of water level controller that adopts noise signal in the water water level to be carried out auto-control.

Background technology

Water level controller is to use automatic control equipment very widely.Wherein, the electronic type water level controller is because have an advantage small-sized, cheap, easy for installation, so, in fields such as industrial and agricultural production, environmental protection and daily lifes a large amount of application is arranged.The basic form of the composition of described electronic type water level controller is: three sensing electrodes are set in the container that is filled with water and apply DC voltage between electrode, utilizing has DC current not have these two kinds of different situations of DC current when interpolar is mobile, anhydrous when between electrode water being arranged, water level is carried out control automatically.China's publication: the automatic water regulator of CN200720060936.9 electronics, CN200910115057.5 water-level control circuit, CN200910074261.7 automatic pumping controller etc. have just been showed above-described " direct current " electronic type water level controller.Also there is following significant drawback in this " direct current " though the electronics water level controller of type has above-described advantage:

1, be DC current because of what circulate between electrode, so there be " electric Plating effect ", cause: a, positive pole (connecing the electrode of DC voltage anode) are constantly by " electrocorrosion ", the frequent Geng Change of need.Chinese patent CN99224691.1 electrode corrosion-resistant shape water level controller has illustrated the order of severity of this electrocorrosion with example.

B, then fouling constantly of negative pole (connecing the electrode of DC voltage negative terminal), at the higher northern area of the water hardness, the phenomenon of this negative pole fouling is then even more serious.And dirt is the material of electric conductivity extreme difference, and water level controller can lose efficacy because of the negative pole fouling.C, positive pole be release metal ions in water constantly, the water meeting in the container so and contaminated.For example hospital, Ke Yan Bu Door just can not use the said apparatus control water level at some water quality to be had the occasion of specific (special) requirements.

The utility model content

The purpose of this utility model is exactly to provide a kind of electrode not corrode simple, cheap " the noise-type water level controller " of non-scaling at above-mentioned the deficiencies in the prior art.

The utility model realizes that the technical thought of above-mentioned purpose is: ground connection, low-water level, three electrodes of high water stage are set in container, and adopt the electrical noise in the water to make test signal, when utilizing electrode to immerse in the water, counter electrode has noise signal output; When electrode surfaces, noise signal open circuit, counter electrode noise-free signal export this two kinds of different situations, realizes the automatic control to water level.

As everyone knows, the water except that pure water, for example tap water, rivers water, industry or sanitary sewage all are the materials with certain conductive capability, it contains ion, aqueous electron multiple charged corpuscles such as (hydrated elecctron or eaq).Effects such as these charged corpuscles are heated, light, electromagnetic field can produce multiple noises such as thermonoise, Johnson noise, flicker noise.Can prove according to methods such as " theory of probability " and thermodynamics statistical theories, the noise in the water be power spectrum density evenly, with the white noise of frequency-independent, its voltage mean square value is Un ²=4KTRB

In the following formula: K is a Boltzmann constant: 1.38 * 10 ^-23Joule/degree (absolute temperature);

T is the temperature of water, measures with absolute temperature;

R is the equivalent resistance of water;

B is the passband of testing apparatus.

Following formula shows that having numerical value in the described water is the noise voltage of Un.Then can show this noise voltage Un intuitively with oscillograph, Fig. 1 is the noise audiogram of area, Shanghai tap water.The author also by following experimental verification the existence of noise signal Un in the described water: get urban district, Ningbo tap water one basin with plastic wash-basin, the voltage that just can record this noise signal with sensitivity higher voltage table, reometer is that mV level, electric current are μ A level; If spread 10g salt in washbowl, described noise voltage decline electric current then increases.

As previously mentioned, the utility model is exactly a kind of device that utilizes described noise signal Un to realize water level is controlled automatically.

In conjunction with Fig. 2: the utility model is made up of direct supply 10, amplifying circuit 20, detecting circuit 30, comparator circuit 40, executive circuit 50, ground-electrode AE, low water level electrode AD, high water level electrode AG and container AV.

Of the present utility model being characterized as: the anode of the DC voltage Uc of direct supply 10 outputs is connected with amplifying circuit 20, comparator circuit 40, executive circuit 50 respectively, and negative terminal is connected with line-to-ground line E; Low water level electrode AD is connected with high water level electrode AG by the moving together contact DH of the performer-relay in the executive circuit; High water level electrode AG is connected with amplifying circuit 20 by the 3rd capacitor C 3; Amplifying circuit 20, detecting circuit 30, comparator circuit 40, executive circuit 50 be connected successively and, they all are connected with line-to-ground line E; Ground-electrode AE be in the following container AV of low-water level D the bottom, it also is connected with line-to-ground line E.

Container AV is if make of metal, and then ground-electrode AE can omit, but described canister must be connected with line-to-ground line E.

The course of work of the present utility model is divided into water and two step of water process:

1, last water process: when the water level in the container AV is lower than low-water level D, low water level electrode AD and high water level electrode AG surface, noise signal Un open circuit, comparator circuit 40 output low levels, the break contact DD closure of the performer in the executive circuit-two groups contact electromagnetic relay, load (pump, solenoid valve, A.C. contactor line bag, thyristor control loop etc., below being called for short load for sake of convenience is pump) " pump " and AC220V connection and beginning pump water, water level in the container rises thereupon, when water level rises to high water stage G place, when high water level electrode AG immerses in the water, noise signal Un is through high water level electrode AG, capacitor C 3 is connected with amplifying circuit 20 and is amplified through this amplifying circuit 20, deliver to comparator circuit 40 after detecting circuit 30 detections, at this moment, comparator circuit 40 output high level, executive circuit is then carried out the closure with relay moving together contact DH, the instruction that break contact DD disconnects, pump stops pump water because of disconnecting with AC220V, water level just is maintained at high water stage G place.Simultaneously, because the closure of relay moving together contact DH (claims that the system that is made up of amplifying circuit 20, detecting circuit 30, comparator circuit 40, executive circuit 50 is a Circuits System) in the low water level electrode AD access circuit system.

2, water utilizing process: after the beginning water, water level descends gradually, and when reducing to high water stage G when following, high water level electrode AG surfaces, but because low water level electrode AD in the access circuit system, therefore, noise signal Un still keeps circulation by low water level electrode AD.When water level is reduced to low-water level D when following, noise signal Un open circuit, Circuits System is reset to the last water process that relay break contact DD closure, moving together contact DH disconnect.The circulation that the utility model so goes round and begins again can be controlled water level in the container AV automatically between high water stage G (promptly not spilling water) and low-water level D (promptly not cutting off the water supply).

The feature of the utility model course of work is: adopt the noise signal Un in the water that the water level in the described container AV is carried out control automatically, noise signal Un is an open-circuit condition described in the last water process; The Un of noise signal described in the water utilizing process is circulation status and inserts in the described amplifying circuit 20; When described noise signal Un opened a way, the moving together contact DH disconnection of described performer-relay, break contact DD closure, load RL and AC220V connected; When described noise signal Un imported described amplifying circuit 20, the moving together contact DH closure of described relay, break contact DD disconnected, described load RL and AC220V disconnection.

Described amplifying circuit 20 can be formed with the also available integrated operational amplifier of discrete device.

Described comparator circuit 40 preferentially selects for use integrated operational amplifier to form, but also can form with discrete device.

Performer in the described executive circuit 50 is preferentially selected the electromagnetic relays of two groups contact for use, also can select for use solid-state relay (Solid State Relays, SSR), thyristor (SCR) or bidirectional thyristor (TriodeAC Switch, TRIAC).

The utility model can be obtained following beneficial effect:

1, owing to having only the noise current in the water not have direct current or the alternating current that adds in the electrode, described electrode is not subjected to yet non-scaling of electrocorrosion, so the utility model reliability height, life-span length can long-term stability move reliably;

2, because the water in the container can not be subjected to the pollution of metallic ion, therefore, the utility model also can be in the applications that water quality is had specific (special) requirements.

When 3, container AV was canister, ground-electrode AE can omit.Compared with prior art, the utility model can be Unit Installation and brings great convenience owing to reduced by an electrode.

Description of drawings

Fig. 1 is the oscillogram of noise Un in the water of oscillograph demonstration

Fig. 2 is a functional-block diagram of the present utility model

Fig. 3 is the circuit theory diagrams of the utility model preferred embodiment.

Embodiment

Fig. 3 is the circuit theory diagrams of the utility model preferred embodiment.In conjunction with Fig. 3: transformer T, rectifier bridge BR, first, second capacitor C 1, C2 and voltage stabilizing diode DW have formed described direct supply 10, and it provides described DC voltage Uc for Circuits System; In the anode of described DC voltage Uc and the Circuits System second, third, the 6th, the 8th resistance R 2, R3, R6, the end of R8 and an end, the 4th diode D4 negative pole of described relay J are connected; Negative terminal is connected with described line-to-ground line E.

Ground-electrode AE be positioned at container AV bottom, low-water level D below, it also is connected with line-to-ground line E.Make if container AV is a metal, then this electrode can omit, but described canister must be connected with line-to-ground line E.

The 3rd capacitor C 3, the first diode D1, first, second, third resistance R 1, R2, R3 and the first triode V1 (model 9014) have formed described amplifying circuit 20, and the emitter of the positive pole of the first diode D1, the-triode V1 and an end of the-resistance R 1 all meet described line-to-ground line E; The other end of one end of described the 3rd capacitor C 3, first, second resistance R 1, R2 and the negative pole of the first diode D1 all connect the base stage of the first triode V1; The collector of another termination first triode V1 of described the 3rd resistance R 3.

Four, the 5th, the 6th capacitor C 4, C5, C6, the 4th resistance R 4, second, third diode D2, D3 have formed described detecting circuit 30, and, the 4th capacitor C 4-end joins with the collector of the first triode V1 in the described amplifying circuit 20, and the other end is connected with the negative pole of the second diode D2 and the positive pole of the 3rd diode D3; The anodal of one end of the 5th capacitor C 5, the 4th resistance R 4, the 6th capacitor C 6 all is connected with the negative pole of the 3rd diode D3; The negative pole of the other end of the 5th capacitor C 5, the 4th resistance R 4, the positive pole of the second diode D2, the 6th capacitor C 6 all meets described line-to-ground line E.

Five, the 6th resistance R 5, R6 and integrated transporting discharging IC (model 393) have formed described comparator circuit 40, and an end of the 5th resistance R 5,4 pin of integrated transporting discharging IC meet described line-to-ground line E; 2 pin of another termination integrated transporting discharging IC of the 5th resistance R 5, the 6th resistance R 6; 8 pin of integrated transporting discharging IC connect the anode of described DC voltage Uc, and 3 pin of integrated transporting discharging (IC) connect the negative pole of the 3rd diode (D3) in the described detecting circuit (30).

Seven, the 8th, the 9th resistance R 7, R8, R9, the second triode V2 (model 9014), the 4th diode D4, relay J (comprising its two groups of contact DH and DD), LED have been formed described executive circuit 50, wherein, relay J is a performer; Annexation is: the emitter of the 7th resistance R 7-end, the second triode V2 all meets described line-to-ground line E; The 7th resistance R 7, the 8th resistance R 8 in addition-base stage of end and the second triode V2 all is connected with 1 pin of integrated transporting discharging IC in the described comparator circuit 40; The collector of the second triode V2 is connected with the other end anodal and described relay J of the 4th diode D4; In parallel with described load RL again after the series connection of the 9th resistance R 9, LED, after this three's connection in series-parallel-the N end of termination AC220V, the other end be connected with an end and the load line 101 of the break contact DD of described relay J; The other end of the break contact DD of described relay J is connected with the L of AC220V end; The end of the moving together contact DH of described relay J is connected with described low water level electrode AD; The other end is connected with described high water level electrode AG and described the 3rd capacitor C 3.

The course of work of present embodiment is: AC220V has produced DC voltage Uc after transformer T step-down, rectifier bridge BR rectification, first, second capacitor C 1, C2 filtering, voltage stabilizing diode DW voltage stabilizing.This Uc is connected with amplifying circuit, comparator circuit, executive circuit respectively through resistance R 2, R3, R6, R8 and relay J; In addition, it has produced the reference voltage U2 of comparator circuit through resistance R 6, R5 dividing potential drop on inverting input 2 pin of integrated transporting discharging IC.

When the water level in the container AV was lower than low-water level D, high water stage, low water level electrode AG, AD all surfaced, noise signal Un open circuit.At this moment, the reference voltage U2 that voltage U 3 on integrated transporting discharging IC in-phase input end 3 pin is lower than on inverting input 2 pin is U3＜U2, IC output terminal 1 pin output low level, triode V2 ends, the performer relay J is failure to actuate, position, break contact DD that its moving together contact DH is in disconnection are in closed position, and load pump gets electric pump water, and LED also gets electroluminescence, the indication pump just is at pump water, present embodiment in " going up water " process.

Because pump water, water level will rise gradually, when water level arrives high water stage G place, high water level electrode AG is dipped into water, noise signal Un and amplifying circuit 20 are connected, through capacitor C 3 couplings, triode V1 amplification, the 3rd diode D3 detection, capacitor C 5, C6 filtering, produced direct current signal U3, and,, just can make U3＞U2 as long as adjust the resistance of R4, R5, R6, this moment, output terminal 1 pin of integrated transporting discharging IC was exported high level, triode V2 conducting, relay J gets electronic work, its moving together contact DH closure, causes in the low water level electrode AD place in circuit system; Simultaneously, its break contact DD disconnects, causes that the load pump outage stops pump water, LED extinguishes, and informs the end of water process, and present embodiment enters water utilizing process.

Because water, water level in the container AV will progressively descend, when water level is reduced to high water stage G when following, high water level electrode AG surfaces, it loses the effect of conducted noise signal Un, but because the moving together contact DH of relay J is closed, so noise signal Un still can be by low water level electrode AD conduction, noise signal Un still connects with amplifying circuit 20.Reduce to low-water level D when following when water level, low water level electrode AD also surfaces, and noise signal Un opens a way once more, and relay J is reset to the original state that break contact DD closure, moving together contact DH disconnect, and pump begins pump water again.The work that present embodiment so goes round and begins again can be controlled water level in the container AV automatically between high water stage G and low-water level D.

In sum, can sum up: the feature of present embodiment is: adopt the noise signal Un in the water that the water level in the container AV is carried out control automatically.When noise signal Un opened a way, the moving together contact DH of performer-relay J disconnection, break contact DD closure, load RL got electric work; When noise signal Un place in circuit system, the moving together contact DH closure of relay J, break contact DD disconnect, load RL dead electricity quits work.

Present embodiment is owing to having only the noise current in the water not have direct current or the alternating current that adds in the electrode, the electrode non-scaling does not corrode, and is therefore, reliable stable.

Claims

1. noise-type water level controller, this controller is made up of direct supply (10), amplifying circuit (20), detecting circuit (30), comparator circuit (40), executive circuit (50), ground-electrode (AE), low water level electrode (AD), high water level electrode (AG) and container (AV), it is characterized in that: adopt the noise signal (Un) in the water that the water level in the described container (AV) is carried out control automatically; And the anode of the DC voltage (Uc) of described direct supply (10) output is connected with described amplifying circuit (20), described comparator circuit (40), described executive circuit (50) respectively, and negative terminal is connected with line-to-ground line (E); Described low water level electrode (AD) is connected with described high water level electrode (AG) by the moving together contact (DH) of the performer-relay (J) in the described executive circuit (50); Described high water level electrode (AG) is connected with described amplifying circuit (20) by the 3rd electric capacity (C3); Described amplifying circuit (20), described detecting circuit (30), described comparator circuit (40), described executive circuit (50) be connected successively and, they all are connected with described line-to-ground line (E); Described ground-electrode (AE) be in the following described container (AV) of low-water level (D) the bottom, it also is connected with described line-to-ground line (E).

2. noise-type water level controller as claimed in claim 1, it is characterized in that: transformer (T), rectifier bridge (BR), first, second electric capacity (C1), (C2) and voltage stabilizing diode (DW) have been formed described direct supply (10), and it provides described DC voltage (Uc) for Circuits System; In the anode of described DC voltage (Uc) and the Circuits System second, third, the 6th, the 8th resistance (R2), (R3), (R6), an end of (R8) and an end, the 4th diode (D4) negative pole of described relay (J) are connected; Negative terminal is connected with described line-to-ground line (E).

3. noise-type water level controller as claimed in claim 1 is characterized in that; Described the 3rd electric capacity (C3), first diode (D1), first, second, third resistance (R1), (R2), (R3) and first triode (V1) have been formed described amplifying circuit (20), and the emitter of the positive pole of first diode (D1), first triode (V1) and an end of the-resistance (R1) all connect described line-to-ground line (E); The other end of one end of described the 3rd electric capacity (C3), first, second resistance (R1), (R2) and the negative pole of first diode (D1) all connect the base stage of first triode (V1); The collector of another termination first triode (V1) of described the 3rd resistance (R3).

4. noise-type water level controller as claimed in claim 1 is characterized in that; Four, the 5th, the 6th electric capacity (C4), (C5), (C6), the 4th resistance (R4), second, third diode (D2), (D3) have formed described detecting circuit (30), and, the collector of first triode (V1) in one end of the 4th electric capacity (C4) and the described amplifying circuit (20) joins, and the other end is connected with the negative pole of second diode (D2) and the positive pole of the 3rd diode (D3); The anodal of one end of the 5th electric capacity (C5), the 4th resistance (R4), the 6th electric capacity (C6) all is connected with the negative pole of the 3rd diode (D3); The negative pole of the positive pole of the other end of the 5th electric capacity (C5), the 4th resistance (R4), second diode (D2), the 6th electric capacity (C6) all connects described line-to-ground line (E).

5. noise-type water level controller as claimed in claim 1 is characterized in that; Five, the 6th resistance (R5), (R6) and integrated transporting discharging (IC) have been formed described comparator circuit (40), and 4 pin of an end of the 5th resistance (R5), integrated transporting discharging (IC) connect described line-to-ground line (E); 2 pin of another termination integrated transporting discharging (IC) of the 5th resistance (R5), the 6th resistance (R6); 8 pin of integrated transporting discharging (IC) connect the anode of described DC voltage (Uc); 3 pin of integrated transporting discharging (IC) connect the negative pole of the 3rd diode (D3) in the described detecting circuit (30).

6. noise-type water level controller as claimed in claim 1 is characterized in that; Seven, the 8th, the 9th resistance (R7), (R8), (R9), second triode (V2), the 4th diode (D4), relay (J) (comprising its two groups of contact DH and DD), light emitting diode (LED) have been formed described executive circuit (50), wherein, relay (J) is a performer; Annexation is: the emitter of an end of the 7th resistance (R7), second triode (V2) all connects described line-to-ground line (E); The base stage of the other end of the 7th resistance (R7), the 8th resistance (R8) and second triode (V2) all is connected with 1 pin of integrated transporting discharging (IC) in the described comparator circuit (40); The collector of second triode (V2) is connected with the other end anodal and described relay (J) of the 4th diode (D4); In parallel with described load (RL) again after the 9th resistance (R9), light emitting diode (LED) series connection, the N end of a termination AC220V, the other end are connected with an end and the load line (101) of the break contact (DD) of described relay (J) after this three's connection in series-parallel; The other end of the break contact (DD) of described relay (J) is connected with the L of AC220V end; One end of the moving together contact (DH) of described relay (J) is connected with described low water level electrode (AD); The other end is connected with described high water level electrode (AG) and described the 3rd electric capacity (C3).

7. as claim 1 or claim 4,6,7 described noise-type water level controllers, it is characterized in that described amplifying circuit (20) can also can form with integrated operational amplifier with discrete device; Described comparator circuit (40) preferentially selects for use integrated operational amplifier to form, but also can form with discrete device; Performer in the described executive circuit (50) is preferentially selected the electromagnetic relays of two groups contact for use, also can select for use solid-state relay (Solid State Relays, SSR), thyristor (SCR) or bidirectional thyristor (Triode AC Switch, TRIAC).