CN204087011U - A kind of ac electrode formula water level detecting and controlling circuit - Google Patents
A kind of ac electrode formula water level detecting and controlling circuit Download PDFInfo
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- CN204087011U CN204087011U CN201420536033.3U CN201420536033U CN204087011U CN 204087011 U CN204087011 U CN 204087011U CN 201420536033 U CN201420536033 U CN 201420536033U CN 204087011 U CN204087011 U CN 204087011U
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Abstract
The utility model discloses a kind of ac electrode formula water level detecting and controlling circuit, comprise transformer, power supply is connected with the power supply indicating circuit be connected in parallel to each other, upper limit level sensor circuit and lower limit level sensor circuit through transformer; Power supply indicating circuit instruction power supply whether normal power supply; Whether upper limit level sensor electric circuit inspection water level exceeds the upper limit; Whether lower limit level sensor electric circuit inspection water level exceeds lower limit; What the upper limit level electrode two ends in upper limit level sensor circuit added is alternating current; What the lower limit level electrode probe in lower limit level sensor circuit added is alternating current.Its beneficial effect is that level electrode adds is alternating current, can not by water dissociation, and electrode is not perishable, long service life; Level electrode controls the base stage of bidirectional triode thyristor, and when electrode does not have water, rectifier bridge and subsequent conditioning circuit are not charged, safety again low in energy consumption like this; Circuit is simple, effectively can control the water level of water storage box, and provides warning and actuating signal in limited time in water level arrival up/down.
Description
Technical field
The utility model relates to automation field, particularly relates to a kind of ac electrode formula water level detecting and controlling circuit.
Background technology
A lot of water treatment facilities such as pond, water tank, water pot of water factory, chemical plant and sewage treatment plant, all need the static state to various liquid, dynamic liquid level measures and control, this just needs level sensor to carry out the detection of water level.What current water level detecting was all that electrode probe flows through is DC current, and its shortcoming is that electrode very easily ionizes oxidation, makes water level detection circuit sensitivity decrease, even whole testing circuit cisco unity malfunction.Have its System's composition complicated again, cost is higher, and electrode life is short.
Utility model content
The purpose of this utility model solves the problem, and the water level detecting and controlling circuit that a kind of cost is low, reliability is high, electrode is not oxidizable is proposed, i.e. ac electrode formula water level detecting and controlling circuit, what so-called ac electrode formula referred to that the electrode two ends of sensed water level add is alternating current, electrode is made not easily to be ionized oxidation, electrode life is long, circuit sensitivity high.
It can water level higher than upper limit water level and lower than lower limit water level in send alerting signal, and the turn-on and turn-off controlling respective switch are to control water inlet and the draining of water storage box, thus can control its water level and be in up/down and restrict water supply between position.
To achieve these goals, the technical scheme that the utility model adopts is:
A kind of ac electrode formula water level detecting and controlling circuit, comprise transformer, power supply is connected with the power supply indicating circuit be connected in parallel to each other, upper limit level sensor circuit and lower limit level sensor circuit through transformer; Described power supply indicating circuit is used to indicate power supply whether normal power supply; Described upper limit level sensor circuit is used for sensed water level and whether exceeds the upper limit; Described lower limit level sensor circuit is used for sensed water level and whether exceeds lower limit; What the upper limit level electrode two ends in described upper limit level sensor circuit added is alternating current; What the lower limit level electrode probe in described lower limit level sensor circuit added is alternating current.
One end of the output terminal of described transformation is connected with common port electrode, and what described common port electrode flowed across is alternating current.
Described power supply indicating circuit comprises: the first rectifier be connected with transformer, described first rectifier output end minus earth, electrochemical capacitor C1 is connected with between the output head anode of described first rectifier and negative pole, described electrochemical capacitor C1 is connected in parallel a series circuit, described series circuit is resistance R1 and the connecting of power light, and described electrochemical capacitor C1 is connected direct voltage source with on the node between resistance R1.
Described upper limit level sensor circuit comprises: the second rectifier be connected with transformer by the first bidirectional triode thyristor, described first bidirectional triode thyristor and common port Electrode connection are at the same output terminal of transformer, the trigger pip of described first bidirectional triode thyristor connects upper limit level electrode, electrochemical capacitor C2 is connected with between the output head anode of described second rectifier and negative pole, described electrochemical capacitor C2 is connected in parallel a series circuit, described series circuit is made up of the first optocoupler be connected in series and resistance R2, upper limit water level caution circuit is connected with between the emitter of described first optocoupler and collector, when upper limit level electrode senses that water level exceeds in limited time, pilot lamp in upper limit water level caution circuit is bright, play warning function.
Described lower limit level sensor circuit comprises: the 3rd rectifier be connected with transformer by the second bidirectional triode thyristor, described second bidirectional triode thyristor and common port Electrode connection are at the same output terminal of transformer, the trigger pip of described second bidirectional triode thyristor connects lower limit level electrode, electrochemical capacitor C3 is connected with between the output head anode of described 3rd rectifier and negative pole, described electrochemical capacitor C3 is connected in parallel a series circuit, described series circuit is made up of the second optocoupler be connected in series and resistance R6, lower limit water level caution circuit is connected between the emitter of described second optocoupler and collector, instantly it is in limited time lower that potential electrode of restricting water supply senses that water level exceeds, pilot lamp in lower limit water level caution circuit is bright, play warning function.
Described upper limit water level caution circuit comprises: the emitter of described first optocoupler is connected to ground by resistance R3, the collector of described first optocoupler is connected with direct voltage source, described direct voltage source is connected with the input end of relay K 1, the output terminal of described relay K 1 is connected with the collector of triode T1, described relay is connected in parallel a series circuit, described series circuit is made up of the upper limit water level indicator light be connected in series and resistance R5, the grounded emitter of described triode T1, the base stage of described triode T1 is connected with the first optocoupler emitter by resistance R4, the emitter of described first optocoupler is connected with node Hlim.
Described upper limit water level caution circuit comprises: the emitter of described second optocoupler is connected to ground, the collector of described second optocoupler is connected with direct voltage source by resistance R7, described direct voltage source is connected with the input end of relay K 2, the output terminal of described relay K 2 is connected with the collector of triode T2, described relay K 2 is connected in parallel a series circuit, described series circuit is made up of the upper limit water level indicator light be connected in series and resistance R9, the grounded emitter of described triode T2, the base stage of described triode T2 is connected with the collector of the second optocoupler by resistance R8, node Llim is connected with between described resistance R7 and resistance R8.
The beneficial effects of the utility model are:
1, level electrode adds is alternating current, can not by water dissociation, and electrode is not perishable, long service life.
2, level electrode controls the base stage of bidirectional triode thyristor, and when electrode does not have water, rectifier bridge and subsequent conditioning circuit are not charged, safety again low in energy consumption like this.
3, circuit is simple, effectively can control the water level of water storage box, and provides warning and actuating signal in limited time in water level arrival up/down.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Fig. 2 is application example of the present utility model.
Wherein, 1, transformer; 2, the first rectifier; 3, the second rectifier; 4, the 3rd rectifier; 5, power light; 6, the first optocoupler; 7, the second optocoupler; 8, common port electrode; 9, the first bidirectional triode thyristor; 10, the second bidirectional triode thyristor; 11, upper limit level electrode; 12, lower limit level electrode; 13, upper limit water level caution lamp; 14, lower limit water level caution lamp; 15, the water level upper limit; 16, water level lower limit.
Embodiment
In order to better understand the technical solution of the utility model, below in conjunction with accompanying drawing, the utility model is described further.
A kind of ac electrode formula water level detecting and controlling circuit, it is characterized in that, comprise transformer 1, power supply is connected with the power supply indicating circuit be connected in parallel to each other, upper limit level sensor circuit and lower limit level sensor circuit through transformer; Described power supply indicating circuit is used to indicate power supply whether normal power supply; Described upper limit level sensor circuit is used for sensed water level and whether exceeds the upper limit; Described lower limit level sensor circuit is used for sensed water level and whether exceeds lower limit; What the upper limit level electrode two ends in described upper limit level sensor circuit added is alternating current; What the lower limit level electrode probe in described lower limit level sensor circuit added is alternating current.
One end of the output terminal of described transformation is connected with common port electrode 8; What described common port electrode flowed across is alternating current.
Described power supply indicating circuit comprises: the first rectifier 2 be connected with transformer, described first rectifier 2 negative pole of output end ground connection, electrochemical capacitor C1 is connected with between the output head anode of described first rectifier 2 and negative pole, described electrochemical capacitor C1 is connected in parallel a series circuit, described series circuit is resistance R1 and the connecting of power light 5, and described electrochemical capacitor C1 is connected direct voltage source with on the node between resistance R1.The input of rectifier bridge connects the output of transformer, and the output of rectifier bridge is in parallel with electrochemical capacitor and pilot lamp, and the convert alternating current that transformer exports becomes direct current for subsequent conditioning circuit by this circuit, and when powering normal, pilot lamp is bright.
Described upper limit level sensor circuit comprises: the second rectifier 3 be connected with transformer by the first bidirectional triode thyristor 9, described first bidirectional triode thyristor 9 and common port electrode 8 are connected to the same output terminal of transformer, the trigger pip of described first bidirectional triode thyristor 9 connects upper limit level electrode 11, electrochemical capacitor C2 is connected with between the output head anode of described second rectifier 3 and negative pole, described electrochemical capacitor C2 is connected in parallel a series circuit, described series circuit is made up of with resistance R2 the first optocoupler 6 be connected in series, the emitter of described first optocoupler 6 is connected to ground by resistance R3, the collector of described first optocoupler 6 is connected with direct voltage source, described direct voltage source is connected with the input end of relay K 1, the output terminal of described relay K 1 is connected with the collector of triode T1, described relay K 1 is connected in parallel a series circuit, described series circuit is made up of with resistance R5 the upper limit water level indicator light 13 be connected in series, the grounded emitter of described triode T1, the base stage of described triode T1 is connected with the first optocoupler 6 emitter by resistance R4, the emitter of described first optocoupler 6 is connected with node Hlim.
The output of transformer is input to rectifier through the first bidirectional triode thyristor, and the trigger pip of the first bidirectional triode thyristor connects level electrode, connects the first optocoupler input end after the output-parallel electrochemical capacitor filtering of rectifier.When level electrode anhydrous (namely water level is lower than upper line position), the first bidirectional triode thyristor Triggerless is in off state, and upper limit sensing circuit no signal exports, and node Hlim is low level, and drive triode to turn off, relay is failure to actuate.Trigger the first bidirectional triode thyristor when level electrode has water, now the first bidirectional triode thyristor conducting, the output of the first optocoupler is connected with resistance R3 and is then accessed power supply with between ground, and node Hlim is high level, and drives triode T1 conducting by current-limiting resistance; Such actuating of relay, upper limit water level indicator light is bright sends alerting signal.This shows water level to reaching the standard grade.
Described lower limit level sensor circuit comprises: the 3rd rectifier 4 be connected with transformer 1 by the second bidirectional triode thyristor 10, described second bidirectional triode thyristor 10 and common port electrode 8 are connected to the same output terminal of transformer 1, the trigger pip of described second bidirectional triode thyristor 10 connects lower limit level electrode 12, electrochemical capacitor C3 is connected with between the output head anode of described 3rd rectifier 4 and negative pole, described electrochemical capacitor C3 is connected in parallel a series circuit, described series circuit is made up of with resistance R6 the second optocoupler 7 be connected in series, the emitter of described second optocoupler 7 is connected to ground, the collector of described second optocoupler 7 is connected with direct voltage source by resistance R7, described direct voltage source is connected with the input end of relay K 2, the output terminal of described relay K 2 is connected with the collector of triode T2, described relay K 2 is connected in parallel a series circuit, described series circuit is made up of with resistance R9 the upper limit water level indicator light 14 be connected in series, the grounded emitter of described triode T2, the base stage of described triode T2 is connected with the collector of the second optocoupler 7 by resistance R8, node Llim is connected with between described resistance R7 and resistance R8.
Trigger the first bidirectional triode thyristor when level electrode has water, now light the second optocoupler; During the second optocoupler conducting, the base stage of triode T2 is that low level is in off state; When water level lower in limited time, when level electrode does not have water, the second optocoupler not conducting, triode T2 base stage is high level triode ON, the actuating of relay, and lower limit water level indicator light is bright sends alerting signal.Now show that water level is to lower limit.
Water storage box shown in Fig. 2, is put in the position of the water level upper limit 15 by upper limit level electrode 11, lower limit level electrode 12 is put in the position of water level lower limit 16, and common port level electrode 13 is put in the bottommost of water tank.When water level is lower than lower limit water level, lower limit water level caution lamp is reported to the police, the actuating of relay; Prescribe a time limit when water level arrives water level lower limit but do not arrive on water level, lower limit water level caution lamp alerting signal is removed, and the normal pilot lamp of relay reset water level is bright; Prescribe a time limit when water level arrives on water level, upper limit water level caution lamp is reported to the police, the actuating of relay.
Utilize this utility model, the control circuit of water pump is connected at the output terminal of relay, under water level is lower than water level, starts intake pump in limited time or stops unwatering pump, when water level is higher than water level stopping in limited time intake pump or starting unwatering pump, effectively can control cistern water level and be in up/down and restrict water supply between position.
By reference to the accompanying drawings embodiment of the present utility model is described although above-mentioned; but the restriction not to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection domain of the present utility model.
Claims (7)
1. an ac electrode formula water level detecting and controlling circuit, is characterized in that, comprise transformer, and power supply is connected with the power supply indicating circuit be connected in parallel to each other, upper limit level sensor circuit and lower limit level sensor circuit through transformer; Described power supply indicating circuit is used to indicate power supply whether normal power supply; Described upper limit level sensor circuit is used for sensed water level and whether exceeds the upper limit; Described lower limit level sensor circuit is used for sensed water level and whether exceeds lower limit; What the upper limit level electrode two ends in described upper limit level sensor circuit added is alternating current; What the lower limit level electrode probe in described lower limit level sensor circuit added is alternating current.
2. a kind of ac electrode formula water level detecting and controlling circuit as claimed in claim 1, it is characterized in that, one end of the output terminal of described transformation is connected with common port electrode, and what described common port electrode flowed across is alternating current.
3. a kind of ac electrode formula water level detecting and controlling circuit as claimed in claim 1 or 2, it is characterized in that, described power supply indicating circuit comprises: the first rectifier be connected with transformer, described first rectifier output end minus earth, electrochemical capacitor C1 is connected with between the output head anode of described first rectifier and negative pole, described electrochemical capacitor C1 is connected in parallel a series circuit, described series circuit is resistance R1 and the connecting of power light, and described electrochemical capacitor C1 is connected direct voltage source with on the node between resistance R1.
4. a kind of ac electrode formula water level detecting and controlling circuit as claimed in claim 2, it is characterized in that, described upper limit level sensor circuit comprises: the second rectifier be connected with transformer by the first bidirectional triode thyristor, described first bidirectional triode thyristor and common port Electrode connection are at the same output terminal of transformer, the trigger pip of described first bidirectional triode thyristor connects upper limit level electrode, electrochemical capacitor C2 is connected with between the output head anode of described second rectifier and negative pole, described electrochemical capacitor C2 is connected in parallel a series circuit, described series circuit is made up of the first optocoupler be connected in series and resistance R2, upper limit water level caution circuit is connected with between the emitter of described first optocoupler and collector, when upper limit level electrode senses that water level exceeds in limited time, pilot lamp in upper limit water level caution circuit is bright, play warning function.
5. a kind of ac electrode formula water level detecting and controlling circuit as claimed in claim 2, it is characterized in that, described lower limit level sensor circuit comprises: the 3rd rectifier be connected with transformer by the second bidirectional triode thyristor, described second bidirectional triode thyristor and common port Electrode connection are at the same output terminal of transformer, the trigger pip of described second bidirectional triode thyristor connects lower limit level electrode, electrochemical capacitor C3 is connected with between the output head anode of described 3rd rectifier and negative pole, described electrochemical capacitor C3 is connected in parallel a series circuit, described series circuit is made up of the second optocoupler be connected in series and resistance R6, lower limit water level caution circuit is connected between the emitter of described second optocoupler and collector, instantly it is in limited time lower that potential electrode of restricting water supply senses that water level exceeds, pilot lamp in lower limit water level caution circuit is bright, play warning function.
6. a kind of ac electrode formula water level detecting and controlling circuit as claimed in claim 4, it is characterized in that, described upper limit water level caution circuit comprises: the emitter of described first optocoupler is connected to ground by resistance R3, the collector of described first optocoupler is connected with direct voltage source, described direct voltage source is connected with the input end of relay K 1, the output terminal of described relay K 1 is connected with the collector of triode T1, described relay is connected in parallel a series circuit, described series circuit is made up of the upper limit water level indicator light be connected in series and resistance R5, the grounded emitter of described triode T1, the base stage of described triode T1 is connected with the first optocoupler emitter by resistance R4, the emitter of described first optocoupler is connected with node Hlim.
7. a kind of ac electrode formula water level detecting and controlling circuit as claimed in claim 5, it is characterized in that, described upper limit water level caution circuit comprises: the emitter of described second optocoupler is connected to ground, the collector of described second optocoupler is connected with direct voltage source by resistance R7, described direct voltage source is connected with the input end of relay K 2, the output terminal of described relay K 2 is connected with the collector of triode T2, described relay K 2 is connected in parallel a series circuit, described series circuit is made up of the upper limit water level indicator light be connected in series and resistance R9, the grounded emitter of described triode T2, the base stage of described triode T2 is connected with the collector of the second optocoupler by resistance R8, node Llim is connected with between described resistance R7 and resistance R8.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420536033.3U CN204087011U (en) | 2014-09-17 | 2014-09-17 | A kind of ac electrode formula water level detecting and controlling circuit |
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|---|---|---|---|
| CN201420536033.3U CN204087011U (en) | 2014-09-17 | 2014-09-17 | A kind of ac electrode formula water level detecting and controlling circuit |
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| CN204087011U true CN204087011U (en) | 2015-01-07 |
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| CN201420536033.3U Expired - Fee Related CN204087011U (en) | 2014-09-17 | 2014-09-17 | A kind of ac electrode formula water level detecting and controlling circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104199473A (en) * | 2014-09-17 | 2014-12-10 | 山东大学 | Alternating-current electrode type water level detecting control circuit |
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2014
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104199473A (en) * | 2014-09-17 | 2014-12-10 | 山东大学 | Alternating-current electrode type water level detecting control circuit |
| CN104199473B (en) * | 2014-09-17 | 2017-01-11 | 山东大学 | Alternating-current electrode type water level detecting control circuit |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20150917 |
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| EXPY | Termination of patent right or utility model |