CN117348615A - Control method and circuit of salt-chlorine machine - Google Patents
Control method and circuit of salt-chlorine machine Download PDFInfo
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- CN117348615A CN117348615A CN202311281754.4A CN202311281754A CN117348615A CN 117348615 A CN117348615 A CN 117348615A CN 202311281754 A CN202311281754 A CN 202311281754A CN 117348615 A CN117348615 A CN 117348615A
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- 239000000460 chlorine Substances 0.000 title claims abstract description 96
- 229910052801 chlorine Inorganic materials 0.000 title claims abstract description 96
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 158
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 118
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 36
- 150000003839 salts Chemical class 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 230000002596 correlated effect Effects 0.000 claims abstract description 9
- 239000003792 electrolyte Substances 0.000 claims description 73
- 230000000875 corresponding effect Effects 0.000 claims description 19
- 238000001514 detection method Methods 0.000 claims description 15
- 230000001276 controlling effect Effects 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 150000001804 chlorine Chemical class 0.000 claims description 5
- 239000012267 brine Substances 0.000 claims 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 16
- 238000010586 diagram Methods 0.000 description 4
- 229910001425 magnesium ion Inorganic materials 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 230000009182 swimming Effects 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 229910001424 calcium ion Inorganic materials 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- -1 salt chloride Chemical class 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000012886 linear function Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- ZFXVRMSLJDYJCH-UHFFFAOYSA-N calcium magnesium Chemical compound [Mg].[Ca] ZFXVRMSLJDYJCH-UHFFFAOYSA-N 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D11/00—Control of flow ratio
- G05D11/02—Controlling ratio of two or more flows of fluid or fluent material
- G05D11/13—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means
- G05D11/139—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by measuring a value related to the quantity of the individual components and sensing at least one property of the mixture
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/24—Halogens or compounds thereof
- C25B1/26—Chlorine; Compounds thereof
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
- C25B15/02—Process control or regulation
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
- C25B15/02—Process control or regulation
- C25B15/023—Measuring, analysing or testing during electrolytic production
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/42—Nature of the water, waste water, sewage or sludge to be treated from bathing facilities, e.g. swimming pools
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Electrochemistry (AREA)
- Automation & Control Theory (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Supply & Treatment (AREA)
- General Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Analytical Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The invention discloses a control method and a circuit of a salt and chlorine machine, wherein the control method of the salt and chlorine machine comprises the following steps: obtaining a first chloride ion concentration of chloride ions in a liquid in which a salt-chlorine machine is positioned; when the first chloride ion concentration is lower than a preset concentration, acquiring a current concentration difference value according to the first chloride ion concentration and the preset concentration; when the current concentration difference value is larger than a preset concentration difference value, determining a target electrolysis rate according to the current concentration difference value, and adjusting a first driving voltage output to a pair of electrolysis plates of a salt-chlorine machine to adjust the electrolysis rate of the salt-chlorine machine to the target electrolysis rate, wherein the current concentration difference value is positively correlated with the target electrolysis rate; the technical scheme of the invention aims to control the electrolysis rate in real time so as to improve the control accuracy of the content of chloride ions in water.
Description
Technical Field
The invention relates to the technical field of salt-chlorine machines, in particular to a salt-chlorine machine control method and a salt-chlorine machine control circuit.
Background
At present, the existing household salt chlorine machine cannot detect the chloride ion concentration in water in real time, and cannot control the electrolysis rate effectively, however, when the chloride ion concentration is higher than a certain concentration, the skin of a human body is damaged, so that how to control the electrolysis rate in real time to improve the control precision of the chloride ion content in water and strengthen the reliability of a control circuit becomes a problem to be solved urgently.
Disclosure of Invention
The invention mainly aims to provide a control method and a control circuit of a salt and chlorine machine, which aim to control the electrolysis rate in real time so as to improve the control precision of the content of chloride ions in water.
In order to achieve the above object, the control circuit of a salt-chlorine machine according to the present invention comprises:
obtaining a first chloride ion concentration of chloride ions in a liquid in which a salt-chlorine machine is positioned;
when the first chloride ion concentration is lower than a preset concentration, acquiring a current concentration difference value according to the first chloride ion concentration and the preset concentration;
and when the current concentration difference is larger than a preset concentration difference, determining a target electrolysis rate according to the current concentration difference, and adjusting a first driving voltage output to a pair of electrolytic plates of the salt-chlorine machine to adjust the electrolysis rate of the salt-chlorine machine to the target electrolysis rate, wherein the current concentration difference is positively correlated with the target electrolysis rate.
In some embodiments, the obtaining a target electrolysis rate from the current concentration difference comprises:
matching the current concentration difference with a plurality of preset difference ranges, wherein the preset difference ranges are a plurality of continuous and non-overlapping intervals, and each preset difference range has a corresponding preset electrolysis rate;
determining a target electrolysis rate corresponding to the preset difference range according to the matched preset difference range;
the preset difference ranges are a plurality of continuous and non-overlapping intervals, and each preset difference range has a corresponding target electrolysis rate.
In some embodiments, after adjusting the first driving voltage output to the pair of electrolytic cells of the salt-chlorine machine, the method further comprises:
re-acquiring the second chloride ion concentration of the chloride ions in the liquid after delaying for a preset period of time;
determining an actual electrolysis rate in the preset period according to the second chloride ion concentration and the first chloride ion concentration;
and outputting a second driving voltage to the electrolyte sheet to drive the electrolyte sheet to perform electrode conversion when the actual electrolysis rate is lower than the target electrolysis rate and the rate difference between the actual electrolysis rate and the target electrolysis rate is larger than a preset rate difference.
In some embodiments, the outputting the second driving voltage to the electrolyte sheet specifically includes:
determining the frequency of the second driving voltage according to the rate difference value, wherein the frequency of the second driving voltage is positively correlated with the rate difference value; or,
and determining the first preset frequency as the frequency of the second driving voltage.
In some embodiments, after determining the actual electrolysis rate within the preset period according to the second chloride ion concentration and the first chloride ion concentration, the method further includes:
and when the actual electrolysis rate is lower than the target electrolysis rate and the rate difference between the actual electrolysis rate and the target electrolysis rate is smaller than a preset rate difference, maintaining to output a first driving voltage to the electrolyte sheet.
In some embodiments, after the obtaining the current concentration difference between the first chloride ion concentration and the preset concentration when the first chloride ion concentration is lower than the preset concentration, the method further includes:
and stopping outputting a first driving voltage to the electrolytic piece when the current concentration difference value is smaller than a preset concentration difference value so as to control the chlorine salt machine to stop electrolysis.
The invention also provides a control circuit of the salt-chlorine machine, which comprises:
the residual chlorine detection circuit is used for obtaining the first chloride ion concentration of chloride ions in the liquid where the salt chlorine machine is located;
the main control chip is electrically connected with the residual chlorine detection circuit and is used for acquiring a current concentration difference value according to the first chloride ion concentration and the preset concentration when the first chloride ion concentration is lower than the preset concentration;
the drive control circuit is provided with a first input end, a second input end, a power end, a first output end corresponding to the first input end and a second output end corresponding to the second input end, wherein the power end is used for being connected with a direct current power supply, the first input end and the second input end are respectively and electrically connected with the main control chip, and the first output end and the second output end are respectively used for being connected with a pair of electrolyte sheets;
and the main control chip is also used for obtaining a target electrolysis rate according to the current concentration difference value when the current concentration difference value is larger than a preset concentration difference value, and controlling the driving control circuit to adjust the duty ratio of the first driving voltage output to the connected pair of electrolysis plates so as to adjust the electrolysis rate of the salt-chlorine machine to the target electrolysis rate, wherein the current concentration difference value is positively correlated with the target electrolysis rate.
In some embodiments, after a predetermined period of time, the residual chlorine detection circuit is further configured to reacquire a second chloride ion concentration of chloride ions in the liquid;
the main control chip is also used for determining the actual electrolysis rate in the preset period according to the second chloride ion concentration and the first chloride ion concentration, comparing the actual electrolysis rate with the target electrolysis rate, and acquiring a current rate difference value according to the actual electrolysis rate and the target electrolysis rate when the actual electrolysis rate is lower than the target electrolysis rate; the method comprises the steps of,
when the current rate difference value is larger than the preset rate difference value, the driving control circuit is controlled to stop outputting the first driving voltage with the adjustable duty ratio, and the driving control circuit is controlled to output the second driving voltage with positive and negative alternation to the electrolytic piece so as to drive the electrolytic piece to perform electrode conversion.
In some embodiments, the drive control circuit includes two drive control branches; the drive control branch includes:
the input end of the current control circuit is used for being connected with a direct-current power supply, and the controlled end of the current control circuit is electrically connected with the main control chip;
the power end of the electrolyte sheet driving circuit is used for being connected with the direct current power supply, the output end of the electrolyte sheet driving circuit is used for being connected with one electrolyte sheet in a pair of electrolyte sheets, the controlled end of the electrolyte sheet driving circuit is electrically connected with the current control circuit, and the electrolyte sheet driving circuit is also provided with two current channels;
the current control circuit is used for adjusting the time ratio of on-off of the electrolyte sheet driving circuit according to a first control signal output by the main control chip so as to adjust the duty ratio of a first driving voltage output by the electrolyte sheet driving circuit, or controlling the current channels of the electrolyte sheet driving circuit in different current directions to be alternately connected according to a second control signal output by the main control chip so as to enable the electrolyte sheet driving circuit to output a second driving voltage with positive and negative alternation.
In some embodiments, the electrolyte sheet driving circuit includes:
the input end of the first switching tube is used for being connected with the direct-current power supply, the output end of the first switching tube is used for being connected with the electrolytic piece and is connected with the input end of the second switching tube, the controlled end of the second switching tube is connected with the input end of the fourth switching tube, and the output end of the fourth switching tube, the output end of the third switching tube and the output end of the second switching tube are respectively grounded;
the first end of the first resistor is used for being connected with the direct-current power supply, the second end of the first resistor is connected with the first end of the second resistor and the controlled end of the first switching tube respectively, and the second end of the second resistor is connected with the input end of the third switching tube;
the first end of the third resistor is electrically connected with the switch circuit, the second end of the third resistor is respectively connected with the first end of the fourth resistor and the controlled end of the third switch tube, and the second end of the fourth resistor is grounded;
the first end of the fifth resistor is used for being connected with the direct-current power supply, and the second end of the fifth resistor is connected with the input end of the fourth switching tube;
the first end of the sixth resistor is electrically connected with the switch circuit, the second end of the sixth resistor is respectively connected with the first end of the seventh resistor and the controlled end of the fourth switch tube, and the second end of the seventh resistor is grounded.
According to the technical scheme, when the first chloride ion concentration is lower than the preset concentration, a current concentration difference value is obtained according to the first chloride ion concentration and the preset concentration, and the target electrolysis rate is determined, so that the duty ratio of a first driving voltage output to a pair of electrolysis plates of the salt-chlorine machine is regulated, the electrolysis rate of the salt-chlorine machine is regulated to the target electrolysis rate, and because the current concentration difference value is positively correlated with the target electrolysis rate, the accurate control of the electrolysis rate of the salt-chlorine machine can be realized, the problems that the electrolysis of the salt-chlorine machine is easy to excessively increase when the current concentration difference value is too small or the electrolysis time is too long when the current concentration difference value is too large are solved, and the control precision of the chloride ion content in water is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of an embodiment of a control method of a salt-chlorine machine according to the present invention;
FIG. 2 is a flowchart of an embodiment of S300 in the present invention;
FIG. 3 is a schematic flow chart of another embodiment of a control method of a salt-chlorine machine according to the present invention;
FIG. 4 is a schematic diagram of a control circuit of a chlorine machine according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of another embodiment of a control circuit of a chlorine machine according to the present invention;
FIG. 6 is a circuit diagram of an embodiment of a control circuit for a salt-chlorine machine of the present invention;
fig. 7 is a circuit configuration diagram of another embodiment of the control circuit of the chlorine machine of the present invention.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the name |
| 710 | Residual chlorine detection circuit | U1 | First operational amplifier |
| 720 | Main control chip | U2 | Second transportComputing amplifier |
| 730 | Drive control circuit | OC1～OC2 | Optical coupler |
| 731 | Current control circuit | Q11 to Q41 and Q12 to Q42 | First to fourth switching tubes |
| 732 | Electrolytic sheet driving circuit | R11 to R71 and R12 to R72 | First to seventh resistors |
| P1 | Residual chlorine sensor | R8～R14 | Eighth to fourteenth resistors |
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides a control circuit of a salt-chlorine machine.
Referring to fig. 1, in one embodiment, comprises:
s100, obtaining first chloride ion concentration of chloride ions in liquid where a salt chlorine machine is located;
in this embodiment, the chlorine salt machine is typically used in swimming pools to kill bacteria, algae and contaminants in the pool water by electrolysis of the salt water in the pool to produce pure free chlorine. When the salt-chlorine machine works, positive and negative voltages are output to a pair of electrolytic plates in the salt-chlorine machine, so that the electrolytic plates electrolyze edible salt in water, and chloride ions are generated as sterilizing substances. The concentration of chloride ions can be acquired by a chloride ion sensor, the chloride ion sensor can detect the concentration of chloride ions in the liquid in an ionization state at present, and a chloride ion detection signal with a corresponding voltage value is output to a control circuit of the salt-chloride machine, so that the control circuit can obtain the current concentration of chloride ions as a first concentration of chloride ions.
S200, when the concentration of the first chloride ions is lower than a preset concentration, acquiring a current concentration difference value according to the concentration of the first chloride ions and the preset concentration;
in this embodiment, when the salt-chlorine machine is controlling chloride ions in the swimming pool, it can only ionize the chloride ions when in a working state, and can not control the reverse synthesis of the chloride ions, so that for the salt-chlorine machine, only when the first chloride ion concentration is lower than a preset concentration, it is effective to adjust the working state, so that when the salt-chlorine machine is working, the control circuit in the salt-chlorine machine makes a difference between the first chloride ion concentration detected by the chloride ion sensor and the preset concentration according to the preset concentration pre-stored in the salt-chlorine machine, thereby obtaining the current concentration difference of the chloride ions in the swimming pool.
The preset concentration can be set by a user through interactive components such as a touch screen and a remote controller, and can also be set by a research and development personnel according to the sensitivity degree of a human body to chloride ions when the application object is a child, the preset concentration can be a smaller value in legal ranges such as 0.35 mg/L and 0.3mg/L, and the preset concentration can be a larger value in legal ranges such as 0.45 mg/L and 0.5mg/L when the application object is an adult.
S300, when the current concentration difference value is larger than a preset concentration difference value, determining a target electrolysis rate according to the current concentration difference value, and adjusting a first driving voltage output to a pair of electrolysis plates of a salt-chlorine machine to adjust the electrolysis rate of the salt-chlorine machine to the target electrolysis rate, wherein the current concentration difference value is positively correlated with the target electrolysis rate;
it should be noted that, since chloride ions are harmful to human body when the concentration is too high, it is necessary to avoid the problem that the electrolysis rate of the salt-chlorine machine cannot be accurately adjusted, so that the salt-chlorine machine is easy to electrolyze excessively when the current concentration difference is too small, or the electrolysis time is too long when the current concentration difference is too large.
Therefore, when the current concentration difference is detected to be larger than the preset concentration difference, the control circuit starts to ionize the edible salt in the water, and obtains the target electrolysis rate according to the current concentration difference, wherein the relation between the current concentration difference and the target electrolysis rate can be a root function or a linear function. Therefore, when the current concentration difference is smaller, namely the first chloride ion concentration is closer to the preset concentration, the target electrolysis rate is smaller, so that the situation that the salt chlorine machine is easy to electrolyze excessively when the current concentration difference is too small is reduced, and when the current concentration difference is larger, namely the distance between the first chloride ion concentration and the preset concentration is larger, the target electrolysis rate is larger, so that the salt chlorine machine can reach the preset concentration rapidly, and the electrolysis time of the salt chlorine machine is reduced.
In addition, the electrolytic plates of the salt-chlorine machine only form a current loop when voltage difference exists at two ends, the equivalent capacitor formed between the two electrolytic plates is charged, and surrounding edible salt is electrolyzed through the voltage of the equivalent capacitor, so that high level is continuously output to one electrolytic plate, pulse voltage with adjustable duty ratio is output to the other electrolytic plate, and the absolute value of the difference value between the high level and the pulse voltage received by the two electrolytic plates is taken as the first driving voltage.
The time that the voltage difference exists between the two electrolyte sheets is adjusted by adjusting the duty ratio of the first driving voltage, when the time that the voltage difference exists between the two electrolyte sheets is shorter, the charging time of the equivalent capacitance between the two electrolyte sheets is longer, so that the voltage at two ends of the equivalent capacitance is larger, the electrolysis rate of edible salt in liquid can be increased, and when the time that the voltage difference exists between the two electrolyte sheets is longer, the charging time of the equivalent capacitance between the two electrolyte sheets is shorter, so that the voltage at two ends of the equivalent capacitance is smaller, the electrolysis rate of the edible salt in liquid can be reduced, and the electrolysis rate of the salt-chlorine machine is adjusted to the target electrolysis rate.
According to the technical scheme, the first chloride ion concentration of chloride ions in liquid where the salt-chlorine machine is located is obtained, when the first chloride ion concentration is lower than the preset concentration, the current concentration difference value is obtained according to the first chloride ion concentration and the preset concentration, the target electrolysis rate is determined, so that the duty ratio of a first driving voltage output to a pair of electrolysis plates of the salt-chlorine machine is adjusted, the electrolysis rate of the salt-chlorine machine is adjusted to the target electrolysis rate, and because the current concentration difference value is positively related to the target electrolysis rate, the accurate control of the electrolysis rate of the salt-chlorine machine can be realized, the problems that the electrolysis rate of the salt-chlorine machine cannot be accurately adjusted, the salt-chlorine machine is easy to electrolyze excessively when the current concentration difference value is too small, or the electrolysis time is too long when the current concentration difference value is too large are solved, and the control precision of the chloride ion content in water is improved.
Referring to fig. 2, in one embodiment, obtaining a target electrolysis rate from the current concentration difference comprises:
s310, matching the current concentration difference value with a plurality of preset difference value ranges, wherein the preset difference value ranges are a plurality of continuous and non-overlapping intervals, and each preset difference value range has a corresponding preset electrolysis rate;
s320, determining a target electrolysis rate corresponding to a preset difference range according to the matched preset difference range;
the preset difference ranges are a plurality of continuous and non-overlapping intervals, and each preset difference range has a corresponding target electrolysis rate.
In this embodiment, there is no overlap between the values corresponding to the plurality of preset interpolation ranges, and as the critical value of the preset difference range increases, the corresponding target electrolysis rate increases. The number of the preset difference ranges is designed by a researcher according to the precision of the produced salt-chlorine machine, when the precision of the salt-chlorine machine is higher, the number of the preset difference ranges is larger, and the difference between the critical value of each preset difference range is smaller, even if the preset concentration difference and the target electrolysis rate are set as corresponding functions in each preset difference range according to actual requirements, for example, the target electrolysis rate is set as a larger fixed value, such as 0.1 mg/(L) in the preset difference range of 0.2-0.3mg/L, the preset concentration difference and the target electrolysis rate are set as linear functions in the preset difference range of 0.1-0.2, and the preset concentration difference and the target electrolysis rate are set as root-mark functions in the preset difference range of 0-0.1, so that the target electrolysis rate can be regulated more accurately.
It should be noted that, the salt-chlorine electrolytic sheet can generate heat during operation, and the interval between the cathode and the anode is very small, if the calcium and magnesium ions of water quality exceeds standard, the hardness is higher, floccules such as calcium carbonate, magnesium carbonate and the like can be generated through the calcium and magnesium ions, the cathode and the anode of the electrolytic cell can be connected with each other in daily accumulation and moon, short circuit is caused, the electrolytic process is uneven, local heating is serious, and the electrode plate can be directly burnt at the poor heat dissipation position.
To solve the above-described problem, in one embodiment, referring to fig. 3, after adjusting the duty ratio of the first driving voltage output to the pair of electrolyte sheets of the salt-chlorine machine, the method further includes:
s410, after delaying for a preset period of time, re-acquiring the second chloride ion concentration of the chloride ions in the liquid;
s420, determining the actual electrolysis rate in a preset period according to the second chloride ion concentration and the first chloride ion concentration, and comparing the actual electrolysis rate with a target electrolysis rate;
s430, outputting a second driving voltage to the electrolyte sheet to drive the electrolyte sheet to perform electrode conversion when the actual electrolysis rate is lower than the target electrolysis rate and the rate difference between the actual electrolysis rate and the target electrolysis rate is larger than a preset rate difference.
In this embodiment, the preset rate difference is a positive number including 0, and the preset period is set by a developer at the time of design, and may be 20 minutes, 10 minutes, or the like.
It can be understood that when the electrolyte sheets work, if scale appears between the electrolyte sheets, the medium of the equivalent capacitance between the two electrolyte sheets can be changed, so that the capacitance value of the equivalent capacitance is reduced, the capacitance voltage during normal charging cannot be reached, and the electrolysis rate of the electrolyte sheets is reduced, therefore, whether the scale is generated between the electrolyte sheets can be judged by detecting whether the actual electrolysis rate between the two electrolyte sheets reaches the target electrolysis rate.
Specifically, the control circuit makes a difference between the received second chloride ion concentration and the first chloride ion concentration, divides the difference value by a time value of a preset period to obtain an actual electrolysis rate, so that the actual electrolysis rate is compared with a target electrolysis rate, whether the electrolyte sheets can work normally is determined, if the actual electrolysis rate is lower than the target electrolysis rate, it is indicated that scale may exist between the electrolyte sheets, at the moment, the control circuit outputs a second driving voltage with alternately positive and negative electrodes so as to enable the electrodes of the two electrolyte sheets to alternate, and when the electrodes are changed, positive calcium magnesium ions attracted to the negative electrodes are repelled from the changed positive electrodes by utilizing a rule of repelling the same electrodes, and the scale is removed.
Optionally, outputting the second driving voltage to the electrolyte sheet specifically includes:
determining the frequency of the second driving voltage according to the rate difference value, wherein the frequency of the second driving voltage is positively correlated with the rate difference value; or,
and determining the first preset frequency as the frequency of the second driving voltage.
In an embodiment, after determining the actual electrolysis rate within the preset period according to the second chloride ion concentration and the first chloride ion concentration, the method further includes:
s500, when the actual electrolysis rate is lower than the target electrolysis rate and the rate difference between the actual electrolysis rate and the target electrolysis rate is smaller than a preset rate difference, maintaining to output a first driving voltage with an adjustable duty ratio to an electrolyte sheet.
In this embodiment, the preset rate difference is a positive number. It will be appreciated that the machine will always have an identity problem after production, so that not every salt-chlorine machine can reach the same speed under the same driving voltage, and therefore this embodiment is provided with the current speed difference as the margin, so as to avoid the problem that the actual electrolysis speed is always lower than the target electrolysis speed because of poor identity of the salt-chlorine machine, so that the salt-chlorine machine cannot normally use other functions.
In an embodiment, when the first chloride ion concentration is lower than the preset concentration, after obtaining the current concentration difference according to the first chloride ion concentration and the preset concentration, the method further includes:
and S600, stopping outputting the first driving voltage to the electrolytic piece when the current concentration difference value is smaller than the preset concentration difference value so as to control the salt-chlorine machine to stop electrolysis.
In this embodiment, when the chloride machine is in an operating state, the chloride machine can only ionize chloride ions and cannot control reverse synthesis of chloride ions, so that the salt chloride machine is effective in adjusting the operating state only when the first chloride ion concentration is lower than the preset concentration, and therefore when the current concentration difference is smaller than the preset concentration difference, it is indicated that the chloride ion concentration in the swimming pool has reached the allowable deviation range of the preset concentration of the salt chloride machine, so that the output of the first driving voltage and the second driving voltage to the electrolyte sheet is stopped to control the salt chloride machine to stop electrolysis.
Referring to fig. 4 and 6, in an embodiment, the present invention further provides a control circuit of a salt-chlorine machine, including:
the residual chlorine detection circuit 710 is configured to obtain a first chloride ion concentration of chloride ions in a liquid in which the salt chlorine machine is located;
the main control chip 720 is electrically connected with the residual chlorine detection circuit 710 and is used for acquiring a current concentration difference value according to the first chloride ion concentration and the preset concentration when the first chloride ion concentration is lower than the preset concentration;
the driving control circuit 730 has a first input end, a second input end, a power end, a first output end corresponding to the first input end, and a second output end corresponding to the second input end, where the power end is used for accessing a dc power supply, the first input end and the second input end are respectively electrically connected to the main control chip 720, and the first output end and the second output end are respectively used for accessing a pair of electrolytic sheets;
the main control chip 720 is further configured to determine a target electrolysis rate according to the current concentration difference when the current concentration difference is greater than the preset concentration difference, and control the driving control circuit 730 to adjust the duty ratio of the first driving voltage output to the connected pair of electrolysis plates, so as to adjust the electrolysis rate of the chlorine salt machine to the target electrolysis rate.
In this embodiment, residual chlorine detection circuit 710 may include a chloride ion sensor machine peripheral circuit.
The chloride ion sensor detects the concentration of chloride ions in the liquid in an ionization state at present, and outputs a chloride ion detection signal with a corresponding voltage value to a control circuit of the salt-chlorine machine, so that the control circuit can obtain the current concentration of chloride ions as a first concentration of chloride ions. And when the current concentration difference value is detected to be larger than the preset concentration difference value, starting to ionize the edible salt in the water.
When in an ionization state, the main control chip 720 outputs a first control signal to the main control chip 720, the first control signal comprises a high level and a PWM signal with an adjustable duty ratio, when a voltage difference exists between the high level and the level of the PWM signal, an internal circuit of the driving control circuit 730 forms a current loop through the electrolytic piece, and when a voltage difference does not exist between the high level and the level of the PWM signal, the internal circuit of the driving control circuit 730 is turned off, so that the driving control circuit 730 processes an accessed direct current power supply into a first driving voltage with different voltage values by conducting and closing the current loop, and the electrolytic piece is driven to work. And, the main control chip 720 obtains a target electrolysis rate according to the current concentration difference value, so that the charging time of the equivalent capacitor between the two electrolysis plates is adjusted by adjusting the duty ratio of the first driving voltage, and the electrolysis rate of the salt-chlorine machine is adjusted to the target electrolysis rate.
Optionally, the residual chlorine detecting circuit 710 includes:
the power end of the residual chlorine sensor P1 is used for being connected with a direct current power supply;
the power end of the first operational amplifier U1 is used for being connected with a direct current power supply, and the non-inverting input end of the first operational amplifier U1 is connected with the output end of the residual chlorine sensor P1;
the power end of the second operational amplifier U2 is used for being connected with a direct current power supply, and the output end of the second operational amplifier U2 is connected with the output end of the main control chip 720;
an eighth resistor R8 connected in series between the output end of the residual chlorine sensor P1 and the ground;
a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, and a twelfth resistor R12, wherein a first end of the ninth resistor R9 is connected to the inverting input terminal of the first operational amplifier U1 and a first end of the tenth resistor R10, a second end of the tenth resistor R10 is connected to the first end of the eleventh resistor, a second end of the eleventh resistor R11 is connected to the non-inverting input terminal of the second operational amplifier U2 and a first end of the twelfth resistor R12, respectively, and a second end of the ninth resistor R9 and a second end of the twelfth resistor R12 are grounded, respectively;
a thirteenth resistor R13 and a fourteenth resistor R14, wherein a first end of the thirteenth resistor R13 is connected to the inverting input terminal of the second operational amplifier U2 and a first end of the fourteenth resistor R14, a second end of the thirteenth resistor R13 is grounded, and a second end of the fourteenth resistor is connected to the output terminal of the second operational amplifier U2.
In this embodiment, the residual chlorine detection circuit 710 adopts a current sampling differential amplification detection circuit, which can be used for detecting a normal signal with a small current, and outputs the amplified signal to the sampling pin of the main control chip 720, and after the amplified signal is processed by software, the content of chloride ions in water can be detected in real time, so that the control of the electrolysis rate of the electrolytic cell is realized.
Specifically, when the chloride ion concentration in the water decreases, the current output by the residual chlorine sensor P1 gradually increases, at this time, the voltage division of the eighth resistor R8 increases, the voltage division value is amplified by an amplifying circuit composed of the first operational amplifier U1, the ninth resistor R9, the tenth resistor R10, the eleventh resistor R11 and the twelfth resistor R12, and then the differential processing is performed by a differential circuit composed of the second operational amplifier U2, the thirteenth resistor R13 and the fourteenth resistor R14, and the amplified voltage division value is output to the sampling pin of the main control chip 720, and the duty ratio of the PWM pulse signal output by the main control chip 720 is increased by software processing, so that the voltage of the electrolytic sheet increases, the electrolytic rate increases, and the chloride ion output increases.
When the chloride ion concentration in the water increases, the output current of the residual chlorine sensor P1 is gradually reduced, at this time, the voltage division of the eighth resistor R8 is reduced, the accessed voltage division value is amplified through the first operational amplifier U1, the ninth resistor R9, the tenth resistor R10, the eleventh resistor R11 and the twelfth resistor R12, and then differential processing is performed through the second operational amplifier U2, the thirteenth resistor R13 and the fourteenth resistor R14, and the amplified result is output to the sampling pin of the main control chip 720, and the duty ratio of the PWM pulse signal output by the main control chip 720 is reduced through software processing, so that the voltage of an electrolytic piece is increased, the electrolytic rate is reduced, and the chloride ion output is reduced.
When the concentration of chloride ions in water reaches a set range value, the master control chip 720 software controls the PWM1 and the PWM2 to output high level at the same time, the electrolytic plate 1 and the electrolytic plate 2 cannot be electrified, and the electrolytic work is stopped.
Referring to fig. 4, in an embodiment, after a predetermined time period, the residual chlorine detection circuit 710 is further configured to re-acquire a second chloride ion concentration of chloride ions in the liquid;
the main control chip 720 is further configured to determine an actual electrolysis rate within a preset period according to the second chloride ion concentration and the first chloride ion concentration, compare the actual electrolysis rate with a target electrolysis rate, and obtain a current rate difference according to the actual electrolysis rate and the target electrolysis rate when the actual electrolysis rate is lower than the target electrolysis rate; the method comprises the steps of,
when the current rate difference is greater than the preset rate difference, the driving control circuit 730 is controlled to output a second driving voltage with positive and negative alternation to the electrolyte sheet so as to drive the electrolyte sheet to perform electrode conversion.
In this embodiment, the main control chip 720 makes a difference between the received second chloride ion concentration and the first chloride ion concentration, and divides the difference by a time value of a preset period to obtain an actual electrolysis rate, so as to compare the actual electrolysis rate with a target electrolysis rate, determine whether the electrolyte can work normally, and if the actual electrolysis rate is lower than the target electrolysis rate, which indicates that there is a possibility of scale between the electrolyte, at this moment, the main control chip 720 controls the driving control circuit 730 to output a second driving voltage with alternating positive and negative so as to make the electrodes of the two electrolyte alternate, and when the electrodes are changed, positive calcium and magnesium ions attracted to the negative electrode are repelled by the rule of the same electrode, so that the scale is removed.
Referring to fig. 4 to 7, in one embodiment, the driving control circuit 730 includes two driving control branches; the drive control branch includes:
the input end of the current control circuit 731 is used for accessing a direct current power supply, and the controlled end of the current control circuit 731 is electrically connected with the main control chip 720;
the electrolyte driving circuit 732, the power end of which is used for being connected with a direct current power supply, the output end of which is used for being connected with one electrolyte of a pair of electrolyte, the controlled end of which is electrically connected with the current control circuit 731, and the electrolyte driving circuit 732 is also provided with two current channels;
the current control circuit 731 is configured to adjust the time ratio of on-off of the electrolyte driving circuit 732 according to the first control signal output by the main control chip 720, so as to adjust the duty ratio of the first driving voltage output by the electrolyte driving circuit 732, or control the current channels of the electrolyte driving circuit 732 in different current directions to be alternately turned on according to the second control signal output by the main control chip 720, so that the electrolyte driving circuit 732 outputs the second driving voltage with alternately positive and negative.
Optionally, taking the electrolyte driving circuit 732 connected to the PWM1 control terminal as an example, the circuit connection of the electrolyte driving circuit 732 connected to the PWM2 control terminal is the same, and the electrolyte driving circuit 732 includes:
the input end of the first switching tube is used for being connected with a direct-current power supply, the output end of the first switching tube is used for being connected with an electrolytic piece and is connected with the input end of the second switching tube, the controlled end of the second switching tube is connected with the input end of the fourth switching tube, and the output end of the fourth switching tube, the output end of the third switching tube and the output end of the second switching tube are respectively grounded;
the first end of the first resistor is used for being connected with a direct current power supply, the second end of the first resistor is connected with the first end of the second resistor and the controlled end of the first switching tube respectively, and the second end of the second resistor is connected with the input end of the third switching tube;
the first end of the third resistor is electrically connected with the current control circuit 731, the second end of the third resistor is respectively connected with the first end of the fourth resistor and the controlled end of the third switching tube, and the second end of the fourth resistor is grounded;
the first end of the fifth resistor is used for being connected with a direct-current power supply, and the second end of the fifth resistor is connected with the input end of the fourth switching tube;
the first end of the sixth resistor is electrically connected with the switch circuit, the second end of the sixth resistor is respectively connected with the first end of the seventh resistor and the controlled end of the fourth switch tube, and the second end of the seventh resistor is grounded.
In this embodiment, when the chlorine salt machine is in operation, if the control terminal PWM1 of the main control chip 720 is at a low level and PWM2 is at a high level, the optocoupler OC1 is turned on, OC2 is turned off, at this time, all of the switching transistors Q11, Q22, Q31, Q41 are turned on in deep saturation, and all of the switching transistors Q12, Q21, Q32, Q42 are turned off, at this time, the dc power is sequentially turned on to ground through Q11, the electrolytic cell 1, the electrolytic cell 2, and Q22, so that the electrolytic cell 1 is an anode, and the electrolytic cell 2 is a cathode.
If the control terminal PWM1 of the main control chip 720 is at a high level, and the PWM2 is at a low level, the optocouplers OC1 are turned off and OC2 are turned on, at this time, the switching transistors Q11, Q22, Q31, Q41 are all turned off, and Q12, Q21, Q32, Q42 are all turned on in deep saturation, at this time, the dc power supply is sequentially turned on to the ground through Q12, the electrolytic cell 2, the electrolytic cell 1 and Q21, so that the electrolytic cell 1 is a cathode, and the electrolytic cell 2 is an anode, and thus PWM signals with complementary waveforms are respectively output to the two electrolytic cell driving circuits 732 through the main control chip 720, and switching of the electrolytic cell electrodes is enabled.
If the control terminals PWM1 and PWM2 of the main control chip 720 are at high level at the same time, the optocouplers OC1 and OC2 are turned off, and at this time, the switching transistors Q11, Q12, Q21, Q22, Q31, Q32, Q41, and Q42 are all turned off, and at this time, the electrolyte sheet 1 and the electrolyte sheet 2 are not powered on, and the electrolyte sheet does not work. If the control terminals PWM1 and PWM2 of the main control chip 720 are at low level at the same time, the optocouplers OC1 and OC2 are turned on, and at this time, all the switching transistors Q11, Q12, Q21, Q22, Q31, Q32, Q41, Q42 are turned on in deep saturation, and at this time, the electrolytic cell 1 and the electrolytic cell 2 are not powered on, and the electrolytic cell does not work. Thus, the master control chip 720 outputs the PWM signal with adjustable duty ratio and the high level or low level with unchanged level to the two electrolyte driving circuits 732, respectively, so that the electrolyte electrodes can be switched.
Further, the driving control branch further includes a first diode D11 and a second diode D21 connected in series between the dc power supply and the ground, and configured to clamp the dc power supply when the dc power supply is in a surge due to lightning strike, power grid interference, and the like.
The foregoing description is only of the optional embodiments of the present invention, and is not intended to limit the scope of the invention, and all the equivalent structural changes made by the description of the present invention and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (10)
1. A method for controlling a salt-chlorine machine, comprising:
acquiring a first chloride ion concentration of chloride ions in a liquid to be treated;
when the first chloride ion concentration is lower than a preset concentration, acquiring a current concentration difference value between the first chloride ion concentration and the preset concentration;
and when the current concentration difference is larger than a preset concentration difference, determining a target electrolysis rate according to the current concentration difference, and adjusting a first driving voltage output to a pair of electrolytic plates of the salt-chlorine machine to adjust the electrolysis rate of the salt-chlorine machine to the target electrolysis rate, wherein the current concentration difference is positively correlated with the target electrolysis rate.
2. The method of claim 1, wherein obtaining the target electrolysis rate from the current concentration difference comprises:
matching the current concentration difference with a plurality of preset difference ranges, wherein the preset difference ranges are a plurality of continuous and non-overlapping intervals, and each preset difference range has a corresponding preset electrolysis rate;
and determining a preset electrolysis rate corresponding to the preset difference range as a target electrolysis rate according to the matched preset difference range.
3. The method of claim 1, wherein after adjusting the first driving voltage output to the pair of electrolyte sheets of the salt-chlorine machine, further comprising:
re-acquiring the second chloride ion concentration of the chloride ions in the liquid after delaying for a preset period of time;
determining an actual electrolysis rate in the preset period according to the second chloride ion concentration and the first chloride ion concentration;
and outputting a second driving voltage to the electrolyte sheet to drive the electrolyte sheet to perform electrode conversion when the actual electrolysis rate is lower than the target electrolysis rate and the rate difference between the actual electrolysis rate and the target electrolysis rate is larger than a preset rate difference.
4. The method of claim 3, wherein outputting the second driving voltage to the electrolytic cell comprises:
determining the frequency of the second driving voltage according to the rate difference value, wherein the frequency of the second driving voltage is positively correlated with the rate difference value; or,
and determining the first preset frequency as the frequency of the second driving voltage.
5. The method for controlling a salt-chlorine machine according to claim 3, wherein after determining the actual electrolysis rate within the predetermined period of time based on the second chloride ion concentration and the first chloride ion concentration, further comprising:
and when the actual electrolysis rate is lower than the target electrolysis rate and the rate difference between the actual electrolysis rate and the target electrolysis rate is smaller than a preset rate difference, maintaining to output a first driving voltage to the electrolyte sheet.
6. The method according to claim 1, wherein after obtaining the current concentration difference between the first chloride ion concentration and the preset concentration when the first chloride ion concentration is lower than the preset concentration, further comprising:
and stopping outputting a first driving voltage to the electrolytic piece when the current concentration difference value is smaller than a preset concentration difference value so as to control the chlorine salt machine to stop electrolysis.
7. A salt-chlorine machine control circuit, comprising:
the residual chlorine detection circuit is used for obtaining the first chloride ion concentration of chloride ions in the liquid where the salt chlorine machine is located;
the main control chip is electrically connected with the residual chlorine detection circuit and is used for acquiring a current concentration difference value according to the first chloride ion concentration and the preset concentration when the first chloride ion concentration is lower than the preset concentration;
the drive control circuit is provided with a first input end, a second input end, a power end, a first output end corresponding to the first input end and a second output end corresponding to the second input end, wherein the power end is used for being connected with a direct current power supply, the first input end and the second input end are respectively and electrically connected with the main control chip, and the first output end and the second output end are respectively used for being connected with a pair of electrolyte sheets;
and the main control chip is also used for obtaining and determining a target electrolysis rate according to the current concentration difference value when the current concentration difference value is larger than the preset concentration difference value, and controlling the driving control circuit to adjust the duty ratio of the first driving voltage output to the connected pair of electrolysis plates so as to adjust the electrolysis rate of the salt-chlorine machine to the target electrolysis rate.
8. The salt and chlorine machine control circuit of claim 7, wherein the residual chlorine detection circuit is further configured to re-acquire a second chloride ion concentration of chloride ions in the liquid after a predetermined time period;
the main control chip is also used for determining the actual electrolysis rate in the preset period according to the second chloride ion concentration and the first chloride ion concentration, comparing the actual electrolysis rate with the target electrolysis rate, and acquiring a current rate difference value according to the actual electrolysis rate and the target electrolysis rate when the actual electrolysis rate is lower than the target electrolysis rate; the method comprises the steps of,
when the current rate difference value is larger than a preset rate difference value, the driving control circuit is controlled to output a second driving voltage with positive and negative alternation to the electrolytic piece so as to drive the electrolytic piece to perform electrode conversion.
9. The chlorine machine control circuit of claim 8, wherein the drive control circuit comprises two drive control branches; the drive control branch includes:
the input end of the current control circuit is used for being connected with a direct-current power supply, and the controlled end of the current control circuit is electrically connected with the main control chip;
the power end of the electrolyte sheet driving circuit is used for being connected with the direct current power supply, the output end of the electrolyte sheet driving circuit is used for being connected with one electrolyte sheet in a pair of electrolyte sheets, the controlled end of the electrolyte sheet driving circuit is electrically connected with the current control circuit, and the electrolyte sheet driving circuit is also provided with two current channels;
the current control circuit is used for adjusting the time ratio of on-off of the electrolyte sheet driving circuit according to a first control signal output by the main control chip so as to adjust the duty ratio of a first driving voltage output by the electrolyte sheet driving circuit, or controlling the current channels of the electrolyte sheet driving circuit in different current directions to be alternately connected according to a second control signal output by the main control chip so as to enable the electrolyte sheet driving circuit to output a second driving voltage with positive and negative alternation.
10. The brine machine control circuit of claim 9 wherein the electrolyte sheet drive circuit comprises:
the input end of the first switching tube is used for being connected with the direct-current power supply, the output end of the first switching tube is used for being connected with the electrolytic piece and is connected with the input end of the second switching tube, the controlled end of the second switching tube is connected with the input end of the fourth switching tube, and the output end of the fourth switching tube, the output end of the third switching tube and the output end of the second switching tube are respectively grounded;
the first end of the first resistor is used for being connected with the direct-current power supply, the second end of the first resistor is connected with the first end of the second resistor and the controlled end of the first switching tube respectively, and the second end of the second resistor is connected with the input end of the third switching tube;
the first end of the third resistor is electrically connected with the current control circuit, the second end of the third resistor is respectively connected with the first end of the fourth resistor and the controlled end of the third switching tube, and the second end of the fourth resistor is grounded;
the first end of the fifth resistor is used for being connected with the direct-current power supply, and the second end of the fifth resistor is connected with the input end of the fourth switching tube;
the first end of the sixth resistor is electrically connected with the current control circuit, the second end of the sixth resistor is respectively connected with the first end of the seventh resistor and the controlled end of the fourth switching tube, and the second end of the seventh resistor is grounded.
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| CN202311281754.4A CN117348615A (en) | 2023-09-28 | 2023-09-28 | Control method and circuit of salt-chlorine machine |
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