CN116813020B - Intelligent water purifying device and control method thereof - Google Patents
Intelligent water purifying device and control method thereof Download PDFInfo
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- CN116813020B CN116813020B CN202310739816.5A CN202310739816A CN116813020B CN 116813020 B CN116813020 B CN 116813020B CN 202310739816 A CN202310739816 A CN 202310739816A CN 116813020 B CN116813020 B CN 116813020B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 347
- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000001954 sterilising effect Effects 0.000 claims abstract description 78
- 238000004891 communication Methods 0.000 claims abstract description 43
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 15
- 239000010935 stainless steel Substances 0.000 claims abstract description 15
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 13
- 230000000694 effects Effects 0.000 claims abstract description 9
- 239000011521 glass Substances 0.000 claims abstract description 9
- 230000008859 change Effects 0.000 claims description 37
- 238000000746 purification Methods 0.000 claims description 13
- 239000004973 liquid crystal related substance Substances 0.000 claims description 12
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000005286 illumination Methods 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 abstract description 4
- 230000008020 evaporation Effects 0.000 abstract description 4
- 239000003651 drinking water Substances 0.000 description 14
- 235000020188 drinking water Nutrition 0.000 description 14
- 238000003973 irrigation Methods 0.000 description 10
- 230000002262 irrigation Effects 0.000 description 10
- 238000004062 sedimentation Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000013505 freshwater Substances 0.000 description 3
- 239000003621 irrigation water Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 210000004907 gland Anatomy 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 229910000619 316 stainless steel Inorganic materials 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 210000002381 plasma Anatomy 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
Classifications
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- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
- C02F1/325—Irradiation devices or lamp constructions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/32—Details relating to UV-irradiation devices
- C02F2201/322—Lamp arrangement
- C02F2201/3227—Units with two or more lamps
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/32—Details relating to UV-irradiation devices
- C02F2201/326—Lamp control systems
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- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention relates to the technical field of water purifying equipment, in particular to an intelligent water purifying device and a control method thereof, wherein the water purifying device comprises a water purifying tank, a control module, a communication module and a power supply module, stainless steel press covers, lamp plates, a first waterproof ring, glass sheets and a second waterproof ring are symmetrically arranged on the upper surface and the lower surface of the water purifying tank, the stainless steel press covers are detachably connected to the water purifying tank through fastening devices, the inner side surfaces of the stainless steel press covers are in matched connection with the lamp plates, a plurality of ultraviolet sterilizing lamps are fixedly arranged on the lamp plates, water in the water purifying tank can be prevented from leaking through the first waterproof ring and the second waterproof ring, and ultraviolet rays emitted by the ultraviolet sterilizing lamps can irradiate on the water in the water purifying tank through the glass sheets; the device can control the temperature of the water body, on one hand, the device can avoid the too low temperature and can not achieve the sterilization effect; on the other hand, the phenomenon that the evaporation of water is quickened due to the fact that the temperature is too high is avoided, and resources are wasted.
Description
Technical Field
The invention relates to the technical field of water purifying equipment, in particular to an intelligent water purifying device and a control method thereof.
Background
Water is a main component of body fluid, is an important substance constituting cells, tissue fluid, blood plasma and the like, and serves as a medium for all chemical reactions in the body, and is a platform for transporting various nutrients and substances. When drinking water is processed, sterilization and purification treatment are needed, however, the existing water purifying device cannot control the temperature, the temperature is too low, the sterilization and disinfection effects cannot be achieved, and the evaporation of water can be accelerated due to the too high temperature, so that resources are wasted; the existing water purifying device cannot automatically identify whether the ultraviolet sterilizing lamp in the water purifying device has the service life or has faults, whether the drinking water is effectively sterilized or not cannot be ensured, and the reliability of the device is low; in addition, the existing water purifying device can not effectively identify whether abnormal phenomena such as turbidity and the like occur in the water source, can not generate a corresponding adjusting scheme according to the water source condition, and is low in intelligent degree.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides an intelligent water purifying device and a control method thereof.
The technical scheme adopted by the invention for achieving the purpose is as follows:
the invention discloses an intelligent water purifying device, which comprises a water purifying tank, a control module, a communication module and a power supply module, wherein stainless steel press covers, lamp plates, a first waterproof ring, glass sheets and a second waterproof ring are symmetrically arranged on the upper surface and the lower surface of the water purifying tank, the stainless steel press covers are detachably connected to the water purifying tank through fastening devices, the inner side surfaces of the stainless steel press covers are in matched connection with the lamp plates, a plurality of ultraviolet sterilizing lamps are fixedly arranged on the lamp plates, water leakage in the water purifying tank can be prevented through the first waterproof ring and the second waterproof ring, and ultraviolet rays emitted by the ultraviolet sterilizing lamps can irradiate on the water in the water purifying tank through the glass sheets;
The left side and the right side of the water purifying tank are respectively provided with a water inlet and a water outlet, an electric control valve is arranged on the water inlet, at least two water resistance sheets are arranged in the water purifying tank along the length direction, water flow grooves are formed in the water resistance sheets, and the water flow grooves of two adjacent water resistance sheets are arranged in a staggered manner; when the water body flows into the water purifying tank from the water inlet, the water body in the water purifying tank forms S-shaped rotary water flow through the water resistance piece and the water flow groove, so that the flowing time of the water body in the water purifying tank is prolonged, ultraviolet rays can irradiate on the water body in the water purifying tank for a longer time, and the sterilization effect is improved.
Further, in a preferred embodiment of the present invention, a first mounting hole is formed on the front side of the clean water tank, and an ultraviolet intensity sensor is mounted on the first mounting hole, and the ultraviolet intensity sensor is used for monitoring the ultraviolet irradiation intensity in the clean water tank.
Further, in a preferred embodiment of the present invention, the real-time ultraviolet irradiation intensity in the clean water tank is obtained at a predetermined time node by an ultraviolet intensity sensor, and the real-time ultraviolet irradiation intensity is compared with the predetermined ultraviolet irradiation intensity to obtain an irradiation intensity difference; comparing the illumination intensity difference with a first preset threshold; if the difference value of the emission intensity is larger than a first preset threshold value, the control module controls the electric control valve to be closed so as to cut off water flow; and generating alarm information, transmitting the alarm information to a communication module, and transmitting the alarm information to a wireless receiving end of a user based on the communication module so as to inform the user of changing the ultraviolet sterilizing lamp.
Further, in a preferred embodiment of the present invention, the power supply module is electrically connected to the ultraviolet sterilization lamp through a wire, and a resistor is disposed between the power supply module and the ultraviolet sterilization lamp, and the resistor is used for adjusting the power supply current of the power supply module.
Further, in a preferred embodiment of the present invention, a second mounting hole is formed on the front side of the fresh water tank, and a temperature sensor is mounted on the second mounting hole, and the temperature is used for monitoring the temperature value in the fresh water tank.
Further, in a preferred embodiment of the present invention, a real-time temperature value in the clean water tank is obtained at a preset time node by a temperature sensor, and the real-time temperature value is compared with the preset temperature value to obtain a temperature value deviation; and comparing the temperature value deviation with a second preset threshold value, if the temperature value deviation is larger than the second preset threshold value, generating a dimming instruction based on the temperature value deviation, transmitting the dimming instruction to a control module, and controlling a resistor to adjust the current between the power supply module and the ultraviolet sterilizing lamp through the control module so as to adjust the power of the ultraviolet sterilizing lamp and ensure that the temperature in the water purifying tank is kept within a preset range.
Further, in a preferred embodiment of the present invention, the water purifying device further includes a liquid crystal display, the liquid crystal display is capable of displaying the number of days of use of the water purifying device, and the liquid crystal display is also capable of displaying fault information.
Further, in a preferred embodiment of the present invention, when the water purifying device is turned on for the first time, the display time of the liquid crystal display is a first preset number of days; the first preset days are declined for one day when the water purifying device is used for one day; when the first preset days are reduced to the second preset days, a first early warning instruction is generated, the first early warning instruction is fed back to the communication module, and the first early warning instruction is sent to a wireless receiving end of a user based on the communication module so as to inform the user that the ultraviolet sterilizing lamp is ready to be replaced; when the first preset days are reduced to 0, a second early warning instruction is generated, the second early warning instruction is sent to the communication module and the control module, the second early warning instruction is sent to a wireless receiving end of a user based on the communication module, the user is informed of changing the ultraviolet sterilizing lamp, and the control module is used for controlling the electric control valve to be closed so as to cut off water flow.
The second aspect of the invention discloses a control method of an intelligent water purifying device, which is applied to any one of the intelligent water purifying devices, and comprises the following steps:
Acquiring a first real-time ultraviolet intensity value inside the water purifying tank through an ultraviolet intensity sensor at a first preset time node, acquiring a second real-time ultraviolet intensity value inside the water purifying tank through the ultraviolet intensity sensor at a second preset time node, and calculating to obtain an ultraviolet intensity change rate based on the first real-time ultraviolet intensity value and the second real-time ultraviolet intensity value;
comparing the ultraviolet intensity change rate with a preset change rate; if the ultraviolet intensity change rate is larger than the preset change rate, acquiring an ultraviolet intensity value fed back by the ultraviolet intensity sensor at each moment in a preset time period, and establishing an ultraviolet intensity change curve graph according to the ultraviolet intensity value fed back by the ultraviolet intensity sensor at each moment;
extracting a first ultraviolet intensity value, a second ultraviolet intensity value and a third ultraviolet intensity value from the ultraviolet intensity variation graph; the first ultraviolet intensity value is an ultraviolet intensity value corresponding to a curve starting point in the ultraviolet intensity change curve graph, the second ultraviolet intensity value is a minimum ultraviolet intensity value in the ultraviolet intensity change curve graph, and the third ultraviolet intensity value is an ultraviolet intensity value corresponding to a curve ending point in the ultraviolet intensity change curve graph;
Subtracting the first ultraviolet intensity value from the second ultraviolet intensity value to obtain a first intensity difference; subtracting the first ultraviolet intensity value from the third ultraviolet intensity value to obtain a second intensity difference; comparing the second intensity difference with the first intensity difference;
if the second intensity difference value is equal to the first intensity difference value, the electric control valve is controlled to be closed so as to cut off water flow, and an actual ultraviolet intensity value in the water purifying cavity is obtained through the ultraviolet intensity sensor; comparing the actual ultraviolet intensity value with a third ultraviolet intensity value;
if the actual ultraviolet intensity value is smaller than the preset value, indicating that the ultraviolet sterilizing lamp is failed, generating failure information at the moment, transmitting the failure information to a communication module, and transmitting the failure information to a wireless receiving end of a user based on the communication module so as to inform the user of changing the ultraviolet sterilizing lamp;
if the actual ultraviolet intensity value is equal to the preset value, the long-time water turbidity phenomenon is indicated, and if the water turbidity is high, scheduling information is generated, and the scheduling information is sent to a control module so as to schedule the turbid water body to a preset area.
Further, in a preferred embodiment of the present invention, the method further comprises the steps of:
if the second intensity difference value is not equal to the first intensity difference value, subtracting the first intensity difference value from the second intensity difference value, and calculating a difference value threshold; comparing the difference threshold with a preset difference threshold;
if the difference threshold is larger than the preset difference threshold, the instant water turbidity phenomenon is indicated to occur, the water turbidity degree is low, and at the moment, the water is not scheduled;
if the difference threshold is not greater than the preset difference, indicating that the long-time water turbidity phenomenon occurs, generating scheduling information if the water turbidity is high, and sending the scheduling information to a control module to schedule the turbid water body to a preset area.
The invention solves the technical defects existing in the background technology, and has the following beneficial effects: through the special structure of water resistance card and water launder, can make the water that flows in the water purification case form S form rotatory rivers, not only can further reduce the water flowing water to can also improve the flow path of water in the water purification case by a greater extent, thereby improve the flow time of water in the water purification case, make the ultraviolet ray can shine on the water in the water purification case for a longer time, improve the sterilizing effect. The device can automatically identify whether the ultraviolet sterilizing lamp reaches the service life, and can timely inform a user to replace the ultraviolet sterilizing lamp after the ultraviolet sterilizing lamp reaches the service life so as to ensure that the water body can be effectively sterilized and improve the reliability; and after the ultraviolet sterilizing lamp fails, the water flow can be cut off timely, and the reliability of the device is further improved. The device can control the temperature of the water body, on one hand, the device can avoid the too low temperature and can not achieve the sterilization effect; on the other hand, the phenomenon that the evaporation of water is quickened due to the fact that the temperature is too high is avoided, and resources are wasted.
Drawings
In order to more clearly illustrate the embodiments of the 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, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other embodiments of the drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of a water purifying apparatus;
FIG. 2 is a schematic cross-sectional structure of a water purifying apparatus;
FIG. 3 is a schematic view showing the internal structure of the fresh water tank;
FIG. 4 is a schematic view of a water-resistant sheet and a water flow groove;
the reference numerals are explained as follows: 101. a clean water tank; 102. stainless steel gland; 103. a lamp panel; 104. a first waterproof ring; 105. a glass sheet; 106. a second waterproof ring; 107. a fastening device; 108. an ultraviolet sterilizing lamp; 109. a water inlet; 201. a water outlet; 202. a water resistance sheet; 203. a water flow groove; 204. a first mounting hole; 205. an ultraviolet intensity sensor; 206. a second mounting hole; 207. a temperature sensor.
Detailed Description
In order that the above objects, features and advantages of the invention will be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings and detailed description thereof, which are simplified schematic drawings which illustrate only the basic structure of the invention and therefore show only those features which are relevant to the invention, it being noted that embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may include one or more of the feature, either explicitly or implicitly. In the description of the invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application can be understood by those of ordinary skill in the art in a specific context.
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
As shown in fig. 1, 2 and 3, the first aspect of the present invention discloses an intelligent water purifying device, the water purifying device includes a water purifying tank 101, a control module, a communication module and a power supply module, stainless steel press covers 102, a lamp panel 103, a first waterproof ring 104, a glass sheet 105 and a second waterproof ring 106 are symmetrically disposed on the upper and lower sides of the water purifying tank 101, the stainless steel press covers 102 are detachably connected to the water purifying tank 101 through fastening devices 107, the inner side surfaces of the stainless steel press covers 102 are cooperatively connected with the lamp panel 103, a plurality of ultraviolet sterilizing lamps 108 are fixedly mounted on the lamp panel 103, water leakage in the water purifying tank 101 can be prevented through the first waterproof ring 104 and the second waterproof ring 106, and ultraviolet rays emitted by the ultraviolet sterilizing lamps 108 can be irradiated to the water in the water purifying tank 101 through the glass sheet 105. It should be noted that, the power supply module can supply power for the electronic component on the water purification device, and the power supply module can be a storage battery or an external power supply, and can supply power for the electronic component, which is not limited herein. The fastening means 107 comprise locking screws, locking bolts or the like. Wherein, the stainless steel gland 102 adopts food grade stainless steel, mainly 304 or 316 stainless steel.
As shown in fig. 1 and 4, the left and right sides of the clean water tank 101 are respectively provided with a water inlet 109 and a water outlet 201, the water inlet 109 is provided with an electric control valve, the inside of the clean water tank 101 is provided with at least two water resistance sheets 202 along the length direction, the water resistance sheets 202 are provided with water flow grooves 203, and the water flow grooves 203 of two adjacent water resistance sheets 202 are staggered; when the water flows into the clean water tank 101 from the water inlet 109, the water in the clean water tank 101 forms S-shaped rotary water flow through the water resistance sheet 202 and the water flow groove 203, so that the flowing time of the water in the clean water tank 101 is prolonged, ultraviolet rays can be irradiated on the water in the clean water tank 101 for a longer time, and the sterilization effect is improved. It should be noted that, the electric control valve is sleeved on the water inlet 109, and the water source water flow can be cut off by controlling the electric control valve, and the electric control valve is an existing conventional device, and the installation position of the electric control valve is not shown in the figure, and the control principle of the electric control valve is not much described.
When the device is used, the water inlet 109 is connected with the water supply pipe, the water outlet 201 is connected with the water outlet pipe, and electronic elements (such as a sensor, an electric control valve, an ultraviolet sterilizing lamp 108 and the like) of the water purifying device are electrified with the power supply module, when the water to be purified flows into the water purifying tank 101 from the water inlet 109, the water is sterilized and purified by ultraviolet rays emitted by the ultraviolet sterilizing lamps 108 arranged on the upper side and the lower side of the water purifying tank 101, so that the water reaches the drinking standard; and through the special structures of the water resistance sheet 202 and the water flow tank 203, the water flowing in the clean water tank 101 forms S-shaped rotary water flow, so that the flowing water of the water body can be further reduced, the flowing path of the water body in the clean water tank 101 can be further improved to a greater extent, the flowing time of the water body in the clean water tank 101 is improved, the ultraviolet rays can be irradiated on the water body in the clean water tank 101 for a longer time, and the sterilization effect is improved.
A first mounting hole 204 is formed in the front side surface of the clean water tank 101, and an ultraviolet intensity sensor 205 is mounted on the first mounting hole 204, and the ultraviolet intensity sensor 205 is used for monitoring the ultraviolet irradiation intensity in the clean water tank 101.
Acquiring real-time ultraviolet irradiation intensity in the clean water tank 101 through an ultraviolet intensity sensor 205 at a preset time node, and comparing the real-time ultraviolet irradiation intensity with the preset ultraviolet irradiation intensity to obtain an irradiation intensity difference value; comparing the illumination intensity difference with a first preset threshold; if the difference value of the emission intensity is larger than a first preset threshold value, the control module controls the electric control valve to be closed so as to cut off water flow; and generates alarm information, transmits the alarm information to a communication module, and transmits the alarm information to a wireless receiving end of a user based on the communication module so as to inform the user of changing the ultraviolet sterilizing lamp 108.
In a preferred embodiment of the present invention, when the water purifying device is in operation, the intensity of the ultraviolet sterilizing lamp 108 is monitored by the ultraviolet intensity sensor 205, the monitored data is uploaded to the control module, the control module and the data processor perform data delivery and operation, then the data is stored in the data memory, the data is defaulted to an initial value (preset ultraviolet irradiation intensity) of the radiation intensity of the ultraviolet sterilizing lamp 108, when the ultraviolet intensity sensor 205 monitors that the ultraviolet intensity is lower than 75% of the initial value, the sensor data is fed back to the control module, the control module compares the monitored data with the initial value, confirms that the intensity is lower than 75% of the initial value, the control module gives an alarm, and simultaneously the communication module of the control module sends information to the user mobile phone and the company background through bluetooth or other communication modes, reminds to replace the ultraviolet sterilizing lamp 108, and simultaneously the control module sends an instruction to the electric control valve to cut off the water flow. Whether the ultraviolet sterilizing lamp 108 reaches the service life or not can be automatically identified by the method, and after the ultraviolet sterilizing lamp 108 reaches the service life, a user can be timely informed of replacing the ultraviolet sterilizing lamp 108 so as to ensure that the water body can be effectively sterilized, and the reliability is improved; and after the ultraviolet sterilizing lamp 108 fails, the water flow can be cut off timely, and the reliability of the device is further improved.
The power supply module is electrically connected with the ultraviolet sterilizing lamp 108 through a wire, and a resistor is arranged between the power supply module and the ultraviolet sterilizing lamp 108 and used for adjusting the power supply current of the power supply module.
A second mounting hole 206 is formed in the front side surface of the clean water tank 101, and a temperature sensor 207 is mounted on the second mounting hole 206, and the temperature is used for monitoring the temperature value in the clean water tank 101. The temperature sensor works under the condition that water is static and does not circulate, if water starts to flow, the temperature sensor is immediately closed, and the ultraviolet sterilizer immediately returns to normal power operation.
Acquiring a real-time temperature value in the clean water tank 101 through a temperature sensor 207 at a preset time node, and comparing the real-time temperature value with the preset temperature value to obtain a temperature value deviation; and comparing the temperature value deviation with a second preset threshold value, if the temperature value deviation is larger than the second preset threshold value, generating a dimming instruction based on the temperature value deviation, transmitting the dimming instruction to a control module, and controlling a resistor to adjust the current between the power supply module and the ultraviolet sterilizing lamp 108 through the control module so as to adjust the power of the ultraviolet sterilizing lamp 108, thereby ensuring that the temperature in the water purifying tank 101 is kept within a preset range.
In a preferred embodiment of the present invention, the real-time water temperature in the clean water tank 101 is monitored by the temperature sensor 207, and the water temperature monitored by the temperature sensor 207 is compared with a preset temperature value, so as to determine whether the water temperature is in a proper range, specifically, when the water temperature is not in a proper range, the control module controls the resistor to adjust the current between the power supply module and the ultraviolet sterilizing lamp 108, so that the power output current of the power supply is reduced or increased, and the power of the ultraviolet sterilizing lamp 108 is automatically adjusted, so that the water temperature is ensured to be within 20-40 ℃. The water temperature can be controlled in the mode, so that the situation that the temperature is too low to achieve the sterilization effect can be avoided; on the other hand, the phenomenon that the evaporation of water is quickened due to the fact that the temperature is too high is avoided, and resources are wasted.
The water purifying device further comprises a liquid crystal display, the liquid crystal display can display the number of days of use of the water purifying device, and the liquid crystal display can also display fault information.
When the water purifying device is started for the first time, the display time of the liquid crystal display is a first preset number of days; the first preset days are declined for one day when the water purifying device is used for one day; when the first preset days drop to the second preset days, generating a first early warning instruction, feeding back the first early warning instruction to the communication module, and sending the first early warning instruction to a wireless receiving end of a user based on the communication module so as to inform the user that the ultraviolet sterilizing lamp 108 is ready to be replaced; when the first preset days are reduced to 0, a second early warning instruction is generated, the second early warning instruction is sent to the communication module and the control module, the second early warning instruction is sent to a wireless receiving end of a user based on the communication module, the user is informed of replacing the ultraviolet sterilizing lamp 108, and the electric control valve is controlled to be closed based on the control module, so that water flow is turned off.
In a preferred embodiment of the present invention, the lcd display is capable of displaying the usage time of the device, displaying the usage days in a countdown manner, wherein the display time is 365 days when the device is started for the first time, the number of the usage days drops by 1 day, when the number drops to 10, the data is uploaded to the control module, and the control module sends a first early warning instruction to send a short message to the set mobile phone through the communication module to prompt the user to prepare for replacing the ultraviolet sterilizing lamp 108; when the number is reduced to 0, the data is uploaded to the control module, the control module outputs a second early warning instruction, the communication module sends a short message to the set mobile phone to prompt the replacement of the ultraviolet sterilizing lamp 108 and sends an alarm signal, and meanwhile, the control module controls the electric control valve to be closed so as to cut off water flow. Through this mode, can automatic identification whether the life of ultraviolet sterilizing lamp 108 has reached early warning time, can indicate that the user is ready to change ultraviolet sterilizing lamp 108 after reaching early warning time, can inform the user in advance, leave enough time and carry out the preparation work for the user to make purifier can continuous operation. And after the ultraviolet sterilizing lamp 108 reaches the service life, the user can be timely informed of replacing the ultraviolet sterilizing lamp 108 so as to ensure that the water body can be effectively sterilized and the reliability is improved; and after the ultraviolet sterilizing lamp 108 fails, the water flow can be cut off timely, and the reliability of the device is further improved.
The second aspect of the invention discloses a control method of an intelligent water purifying device, which is applied to any one of the intelligent water purifying devices, and comprises the following steps:
acquiring a first real-time ultraviolet intensity value inside the water purifying tank through an ultraviolet intensity sensor at a first preset time node, acquiring a second real-time ultraviolet intensity value inside the water purifying tank through the ultraviolet intensity sensor at a second preset time node, and calculating to obtain an ultraviolet intensity change rate based on the first real-time ultraviolet intensity value and the second real-time ultraviolet intensity value;
comparing the ultraviolet intensity change rate with a preset change rate; if the ultraviolet intensity change rate is larger than the preset change rate, acquiring an ultraviolet intensity value fed back by the ultraviolet intensity sensor at each moment in a preset time period, and establishing an ultraviolet intensity change curve graph according to the ultraviolet intensity value fed back by the ultraviolet intensity sensor at each moment;
extracting a first ultraviolet intensity value, a second ultraviolet intensity value and a third ultraviolet intensity value from the ultraviolet intensity variation graph; the first ultraviolet intensity value is an ultraviolet intensity value corresponding to a curve starting point in the ultraviolet intensity change curve graph, the second ultraviolet intensity value is a minimum ultraviolet intensity value in the ultraviolet intensity change curve graph, and the third ultraviolet intensity value is an ultraviolet intensity value corresponding to a curve ending point in the ultraviolet intensity change curve graph;
Subtracting the first ultraviolet intensity value from the second ultraviolet intensity value to obtain a first intensity difference; subtracting the first ultraviolet intensity value from the third ultraviolet intensity value to obtain a second intensity difference; comparing the second intensity difference with the first intensity difference;
if the second intensity difference value is equal to the first intensity difference value, the electric control valve is controlled to be closed so as to cut off water flow, and an actual ultraviolet intensity value in the water purifying cavity is obtained through the ultraviolet intensity sensor; comparing the actual ultraviolet intensity value with a third ultraviolet intensity value;
if the actual ultraviolet intensity value is smaller than the preset value, indicating that the ultraviolet sterilizing lamp is failed, generating failure information at the moment, transmitting the failure information to a communication module, and transmitting the failure information to a wireless receiving end of a user based on the communication module so as to inform the user of changing the ultraviolet sterilizing lamp;
if the actual ultraviolet intensity value is equal to the preset value, the long-time water turbidity phenomenon is indicated, and if the water turbidity is high, scheduling information is generated, and the scheduling information is sent to a control module so as to schedule the turbid water body to a preset area.
The preset value is an ultraviolet irradiation intensity value obtained by an ultraviolet intensity sensor when the ultraviolet sterilizing lamp is empty in the clean water tank.
In the working process of the water purifying device, the real-time ultraviolet intensity value inside the water purifying tank is obtained at preset time intervals respectively, so that the ultraviolet intensity change rate is calculated; if the ultraviolet intensity change rate is greater than the preset change rate, it can be stated that the ultraviolet irradiation intensity in the clean water tank is rapidly reduced, and the sterilization effect is affected due to insufficient ultraviolet irradiation intensity, so that the drinking water after the sterilization treatment does not reach the standard. The ultraviolet irradiation intensity is rapidly reduced due to two reasons, namely, the ultraviolet sterilizing lamp in the water purifying device emits faults, which are caused by the device; secondly, the introduced water source is turbid, and the turbid water body shields the ultraviolet intensity sensor, so that the ultraviolet irradiation intensity is rapidly reduced in the time period, and the device is not in fault. Therefore, in order to make appropriate control measures for different situations, it is necessary to further determine what causes the rapid decrease in the intensity of the ultraviolet radiation.
Specifically, firstly, if the ultraviolet intensity change rate is greater than a preset change rate, acquiring an ultraviolet intensity value fed back by an ultraviolet intensity sensor at each time point (unit is seconds) in a preset time period, establishing an ultraviolet intensity change curve graph according to the ultraviolet intensity value fed back by the ultraviolet intensity sensor at each time point, and extracting a first ultraviolet intensity value, a second ultraviolet intensity value and a third ultraviolet intensity value from the ultraviolet intensity change curve graph; and calculating according to the first ultraviolet intensity value, the second ultraviolet intensity value and the third ultraviolet intensity value to obtain a first intensity difference value and a second intensity difference value. If the first intensity difference is equal to the second intensity difference, the ultraviolet intensity change graphs of the endpoints corresponding to the second ultraviolet intensity value and the third ultraviolet intensity value are mutually overlapped, and the ultraviolet irradiation intensity is still weaker in the period of time, and the ultraviolet irradiation intensity does not have a rising trend (the ultraviolet irradiation intensity does not return to the normal irradiation intensity value), which belongs to a serious abnormal condition, at the moment, the electric control valve is immediately controlled to be closed so as to cut off the water source, and after the water source is thoroughly cut off (when the water purifying tank is in an empty tank state), the actual ultraviolet intensity value in the water purifying cavity is obtained through the ultraviolet intensity sensor again; and then comparing the actual ultraviolet intensity value with a preset value, if the actual ultraviolet intensity value is smaller than the preset value, the ultraviolet irradiation intensity value in the clean water tank is still too low after the water flow is cut off (after the clean water tank is in an empty state), and at the moment, it can be stated that the ultraviolet irradiation intensity is reduced and is not caused by water turbidity, at the moment, the ultraviolet sterilizing lamp can be stated to be failed, at the moment, failure information is generated, the failure information is transmitted to a communication module, the failure information is transmitted to a wireless receiving end of a user based on the communication module, so that the user can be informed of changing the ultraviolet sterilizing lamp (the user mobile phone APP is connected through a wireless port, and then the ultraviolet sterilizing lamp is fed back to a manufacturer and the user). If the actual ultraviolet intensity value is equal to the preset value, it is indicated that the ultraviolet irradiation intensity value in the clean water tank has a tendency to rise after the water flow is cut off (after the clean water tank is in an empty tank state), and can rise back to the preset value, at this time, it may be indicated that the decrease in the ultraviolet irradiation intensity before that is not caused by the failure of the ultraviolet sterilizing lamp, because the ultraviolet irradiation intensity value in the clean water tank can rise back to the preset value after the water flow is cut off, by this means, it may be proved that the ultraviolet sterilizing lamp is normal, at this time, it is indicated that the water source water body has a long-time turbidity phenomenon, and the turbidity of the water body is high, at this time, scheduling information is generated, and the scheduling information is sent to the control module, so as to schedule the turbid water body to a preset area, such as to schedule the turbid water body to the sedimentation tank, or schedule the turbid water body to the farmland irrigation water area, etc.
In summary, the specific cause of the decrease of the ultraviolet irradiation intensity in the water purifying tank can be rapidly analyzed by the method, so that treatment measures can be made according to different conditions, the intelligent degree of the water purifying device is improved, and the reliability of the quality of drinking water can be improved.
In a preferred embodiment of the present invention, the method further comprises the steps of:
if the second intensity difference value is not equal to the first intensity difference value, subtracting the first intensity difference value from the second intensity difference value, and calculating a difference value threshold; comparing the difference threshold with a preset difference threshold;
if the difference threshold is larger than the preset difference threshold, the instant water turbidity phenomenon is indicated to occur, the water turbidity degree is low, and at the moment, the water is not scheduled;
if the difference threshold is not greater than the preset difference, indicating that the long-time water turbidity phenomenon occurs, generating scheduling information if the water turbidity is high, and sending the scheduling information to a control module to schedule the turbid water body to a preset area.
If the second intensity difference is not equal to the first intensity difference, it is indicated that the end points corresponding to the second ultraviolet intensity value and the third ultraviolet intensity value are not coincident in the ultraviolet intensity change curve chart, the second ultraviolet intensity value and the third ultraviolet intensity value are not equal, it is indicated that the ultraviolet irradiation intensity is in a trend of rising to a normal value from the time in the time period, and it is indicated that the condition is not caused by the failure of the ultraviolet sterilizing lamp, but caused by the occurrence of turbidity in the water body, and further analysis is needed. Specifically, if the second intensity difference is not equal to the first intensity difference, subtracting the first intensity difference from the second intensity difference, and calculating a difference threshold; comparing the difference threshold with a preset difference threshold; if the difference threshold is larger than the preset difference threshold, the ultraviolet irradiation intensity in the water purifying tank returns to the normal range in a very short time, and the current water turbidity phenomenon is only indicated to occur, and the water turbidity degree is low, so that the water is not scheduled. Otherwise, if the difference threshold is not greater than the preset difference, although the ultraviolet irradiation intensity in the clean water tank has a rising trend, the rising kinetic energy is lower, which indicates that the ultraviolet irradiation intensity in the clean water tank still does not return to the normal range in a longer time, which indicates that the long-time water turbidity phenomenon occurs currently, and the water turbidity degree is high, scheduling information is generated at the moment, and the scheduling information is sent to the control module so as to schedule the turbid water body to a preset area, such as scheduling the turbid water body to a sedimentation tank, or scheduling the turbid water body to a farmland irrigation water area. The method can treat the water body according to the actual condition of the turbid water body, and achieves intelligent regulation and control.
In addition, the method for generating the scheduling information and sending the scheduling information to the control module to schedule the turbid water body to the preset area specifically comprises the following steps:
acquiring factory order information of drinking water, and determining the required factory amount of the drinking water in preset time based on the factory order information; and obtaining stock quantity for drinking water; judging whether the stock quantity is larger than the delivery quantity;
if the stock quantity is not greater than the delivery quantity, generating first scheduling information, and scheduling the current turbid water body to a sedimentation tank for sedimentation treatment based on the first scheduling information;
if the stock quantity is larger than the delivery quantity, acquiring current water source demand information to be irrigated through the Internet of things, determining plant characteristic information of different irrigation areas based on the water source demand information to be irrigated, and determining a plurality of evaluation indexes according to the plant characteristic information of the different irrigation areas; wherein, the characteristic information of the plants to be irrigated comprises the types of the plants and the growth stages;
acquiring chemical component information of a current turbid water body, and determining an evaluation score according to the chemical component information;
calculating weight values between the evaluation scores and a plurality of evaluation indexes by using an analytic hierarchy process to obtain a plurality of weight values;
Constructing a sorting table, importing a plurality of weight values into the sorting table to sort the sizes of the weight values, extracting the maximum weight value from the sorting table after sorting is completed, acquiring an irrigation area corresponding to the maximum weight value, and generating second scheduling information based on the irrigation area corresponding to the maximum weight value;
and dispatching the current turbid water body to an irrigation area corresponding to the maximum weight value for irrigation based on the second dispatching information.
If the stock quantity is not greater than the delivery quantity, the drinking water yield is insufficient, and in order to ensure the yield of the water intake, the turbid water body is dispatched to a sedimentation tank for sedimentation treatment, and then the water source is continuously used for producing the drinking water so as to ensure the yield. If the stock quantity is larger than the delivery quantity, the stock quantity of the drinking water is sufficient, and the current turbid water body can be adjusted to be an irrigation water source so as to reduce the production cost, so that the turbid water body is used for irrigation, the process does not need to be subjected to precipitation treatment, the production cost can be effectively reduced, and the turbid water source is intermittent, for example, when the water supply source is used for construction, the water source in the construction period can be turbid, after a period of time after the construction is finished, the water source can be recovered to be normal, and therefore, under the condition of sufficient stock quantity of the drinking water, the turbid water source can be temporarily scheduled to be used for irrigation, the water precipitation step can be omitted, and the production cost is reduced. In addition, the optimal irrigation plant can be determined according to the real-time chemical components of the turbid water body through the method, so that the intelligent irrigation scheduling function is realized, and the real-time chemical components of the turbid water body can be obtained through a series of sensors.
In addition, the control method of the intelligent water purifying device further comprises the following steps:
acquiring signal information transmitted by a communication module in a preset time period through a wireless receiving end, and judging whether the signal information of the communication module can be received in the preset time period through the wireless receiving end;
if the wireless receiving end can not receive the signal information of the communication module within the preset time period, the communication module is indicated to have a fault;
if the wireless receiving end can receive the signal information of the communication module in a preset time period, the on-off frequency of the signal information is obtained, and the on-off frequency is compared with the preset on-off frequency;
and if the on-off frequency is larger than the preset on-off frequency, indicating that the communication module fails.
It should be noted that, through the method, whether the communication module has a fault or not can be judged, and after the communication module has a fault, an maintainer can overhaul in time, so that the reliability of the device is improved.
In addition, the control method of the intelligent water purifying device further comprises the following steps:
obtaining standard air pressure values of the interior of the water purifying tank under different temperature conditions through a big data network, constructing a database, and importing the standard air pressure values of the interior of the water purifying tank under different temperature conditions into the database to obtain a characteristic database;
Acquiring real-time temperature information inside the water purifying tank through a temperature sensor, and importing the real-time temperature information into the characteristic database to obtain a preset standard air pressure value inside the current water purifying tank;
acquiring real-time air pressure information in the water purifying tank through an air pressure sensor, and comparing the real-time air pressure information with a preset standard air pressure value to obtain an air pressure difference value;
and comparing the air pressure difference value with a preset air pressure difference value, and if the air pressure difference value is larger than the preset air pressure difference value, controlling the electric control valve to be closed by the control module so as to cut off water flow, generating alarm information and generating the alarm information to the wireless receiving end.
It should be noted that, if the air pressure difference is greater than the preset air pressure difference, it is indicated that a large amount of gas exists in the water source, at this time, the concentration of bubbles in the water body is too high, and if drinking water is still produced at this time, the quality of the drinking water is affected, whether the water source has a large amount of gas can be effectively judged by the method, and if a large amount of gas exists, a worker can timely be informed to process the water source so as to ensure the quality of the drinking water.
The foregoing description of the preferred embodiments according to the present invention is provided as illustration and description, and is not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (8)
1. A control method of an intelligent water purifying device is characterized in that:
the water purifying device comprises a water purifying tank, a control module, a communication module and a power supply module, wherein stainless steel press covers, lamp panels, a first waterproof ring, glass sheets and a second waterproof ring are symmetrically arranged on the upper surface and the lower surface of the water purifying tank, the stainless steel press covers are detachably connected to the water purifying tank through fastening devices, the inner side surfaces of the stainless steel press covers are connected with the lamp panels in a matched mode, a plurality of ultraviolet sterilizing lamps are fixedly arranged on the lamp panels, water leakage in the water purifying tank can be prevented through the first waterproof ring and the second waterproof ring, and ultraviolet rays emitted by the ultraviolet sterilizing lamps can penetrate through the glass sheets to irradiate on water in the water purifying tank;
the left side and the right side of the water purifying tank are respectively provided with a water inlet and a water outlet, an electric control valve is arranged on the water inlet, at least two water resistance sheets are arranged in the water purifying tank along the length direction, water flow grooves are formed in the water resistance sheets, and the water flow grooves of two adjacent water resistance sheets are arranged in a staggered manner; when the water body flows into the water purifying tank from the water inlet, the water body in the water purifying tank forms S-shaped rotary water flow through the water resistance sheet and the water flow groove, so that the flowing time of the water body in the water purifying tank is prolonged, ultraviolet rays can irradiate the water body in the water purifying tank for a longer time, and the sterilization effect is improved;
The control method comprises the following steps:
acquiring a first real-time ultraviolet intensity value inside the water purifying tank through an ultraviolet intensity sensor at a first preset time node, acquiring a second real-time ultraviolet intensity value inside the water purifying tank through the ultraviolet intensity sensor at a second preset time node, and calculating to obtain an ultraviolet intensity change rate based on the first real-time ultraviolet intensity value and the second real-time ultraviolet intensity value;
comparing the ultraviolet intensity change rate with a preset change rate; if the ultraviolet intensity change rate is larger than the preset change rate, acquiring an ultraviolet intensity value fed back by the ultraviolet intensity sensor at each moment in a preset time period, and establishing an ultraviolet intensity change curve graph according to the ultraviolet intensity value fed back by the ultraviolet intensity sensor at each moment;
extracting a first ultraviolet intensity value, a second ultraviolet intensity value and a third ultraviolet intensity value from the ultraviolet intensity variation graph; the first ultraviolet intensity value is an ultraviolet intensity value corresponding to a curve starting point in the ultraviolet intensity change curve graph, the second ultraviolet intensity value is a minimum ultraviolet intensity value in the ultraviolet intensity change curve graph, and the third ultraviolet intensity value is an ultraviolet intensity value corresponding to a curve ending point in the ultraviolet intensity change curve graph;
Subtracting the first ultraviolet intensity value from the second ultraviolet intensity value to obtain a first intensity difference; subtracting the first ultraviolet intensity value from the third ultraviolet intensity value to obtain a second intensity difference; comparing the second intensity difference with the first intensity difference;
if the second intensity difference value is equal to the first intensity difference value, the electric control valve is controlled to be closed so as to cut off water flow, and an actual ultraviolet intensity value in the water purifying cavity is obtained through the ultraviolet intensity sensor; comparing the actual ultraviolet intensity value with a third ultraviolet intensity value;
if the actual ultraviolet intensity value is smaller than the preset value, indicating that the ultraviolet sterilizing lamp is failed, generating failure information at the moment, transmitting the failure information to a communication module, and transmitting the failure information to a wireless receiving end of a user based on the communication module so as to inform the user of changing the ultraviolet sterilizing lamp;
if the actual ultraviolet intensity value is equal to a preset value, indicating that a long-time water turbidity phenomenon occurs, generating scheduling information if the water turbidity is high, and sending the scheduling information to a control module to schedule the turbid water body to a preset area;
The method also comprises the following steps:
if the second intensity difference value is not equal to the first intensity difference value, subtracting the first intensity difference value from the second intensity difference value, and calculating a difference value threshold; comparing the difference threshold with a preset difference threshold;
if the difference threshold is larger than the preset difference threshold, the instant water turbidity phenomenon is indicated to occur, the water turbidity degree is low, and at the moment, the water is not scheduled;
if the difference threshold is not greater than the preset difference, indicating that the long-time water turbidity phenomenon occurs, generating scheduling information if the water turbidity is high, and sending the scheduling information to a control module to schedule the turbid water body to a preset area.
2. The control method of an intelligent water purification apparatus according to claim 1, wherein: the front side of the clean water tank is provided with a first mounting hole, an ultraviolet intensity sensor is mounted on the first mounting hole, and the ultraviolet intensity sensor is used for monitoring the ultraviolet irradiation intensity in the clean water tank.
3. The control method of an intelligent water purification apparatus according to claim 2, wherein: acquiring real-time ultraviolet irradiation intensity in the clean water tank through an ultraviolet intensity sensor at a preset time node, and comparing the real-time ultraviolet irradiation intensity with the preset ultraviolet irradiation intensity to obtain an irradiation intensity difference value; comparing the illumination intensity difference with a first preset threshold; if the difference value of the emission intensity is larger than a first preset threshold value, the control module controls the electric control valve to be closed so as to cut off water flow; and generating alarm information, transmitting the alarm information to a communication module, and transmitting the alarm information to a wireless receiving end of a user based on the communication module so as to inform the user of changing the ultraviolet sterilizing lamp.
4. The control method of an intelligent water purification apparatus according to claim 1, wherein: the power supply module is electrically connected with the ultraviolet sterilizing lamp through a lead, and a resistor is arranged between the power supply module and the ultraviolet sterilizing lamp and used for adjusting the power supply current of the power supply module.
5. The method for controlling an intelligent water purification apparatus according to claim 4, wherein: the front side of the water purifying tank is provided with a second mounting hole, a temperature sensor is arranged on the second mounting hole, and the temperature is used for monitoring the temperature value in the water purifying tank.
6. The method for controlling an intelligent water purification apparatus according to claim 5, wherein: acquiring a real-time temperature value in the water purifying tank through a temperature sensor on a preset time node, and comparing the real-time temperature value with a preset temperature value to obtain a temperature value deviation; and comparing the temperature value deviation with a second preset threshold value, if the temperature value deviation is larger than the second preset threshold value, generating a dimming instruction based on the temperature value deviation, transmitting the dimming instruction to a control module, and controlling a resistor to adjust the current between the power supply module and the ultraviolet sterilizing lamp through the control module so as to adjust the power of the ultraviolet sterilizing lamp and ensure that the temperature in the water purifying tank is kept within a preset range.
7. The control method of an intelligent water purification apparatus according to claim 1, wherein: the water purifying device further comprises a liquid crystal display, the liquid crystal display can display the number of days of use of the water purifying device, and the liquid crystal display can also display fault information.
8. The control method of an intelligent water purification apparatus according to claim 7, wherein: when the water purifying device is started for the first time, the display time of the liquid crystal display is a first preset number of days; the first preset days are declined for one day when the water purifying device is used for one day; when the first preset days are reduced to the second preset days, a first early warning instruction is generated, the first early warning instruction is fed back to the communication module, and the first early warning instruction is sent to a wireless receiving end of a user based on the communication module so as to inform the user that the ultraviolet sterilizing lamp is ready to be replaced; when the first preset days are reduced to 0, a second early warning instruction is generated, the second early warning instruction is sent to the communication module and the control module, the second early warning instruction is sent to a wireless receiving end of a user based on the communication module, the user is informed of changing the ultraviolet sterilizing lamp, and the control module is used for controlling the electric control valve to be closed so as to cut off water flow.
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