CN116182497A - Water level detection method of water storage container and computer storage medium - Google Patents

Abstract

The invention provides a water level detection method of a water storage container and a computer storage medium. The water level detection method of the water storage container comprises the following steps: acquiring an anhydrous capacitance threshold value and a water capacitance threshold value of the induction film patch, wherein the anhydrous capacitance threshold value is a capacitance value of the induction film patch when the water level height in the water storage container does not reach the position of the induction film patch, and the water capacitance threshold value is a capacitance value of the induction film patch when the water level height in the water storage container reaches the position of the induction film patch; collecting an actual capacitance value of the sensing film; and determining the water level height in the water storage container according to the actual capacitance value, the anhydrous capacitance threshold value and the water capacity threshold value. According to the scheme, the water level inside the water storage container can be judged in a simple mode, the water level inside the water storage container can be accurately and efficiently determined, the accuracy is ensured, and meanwhile, the production cost is effectively saved.

Description

Water level detection method of water storage container and computer storage medium

Technical Field

The invention relates to the technical field of household appliances, in particular to a water level detection method of a water storage container and a computer storage medium.

Background

Along with the increasing development of society and the continuous improvement of living standard of people, the living rhythm of people is faster and faster, so that people are willing to buy a lot of foods in the refrigerator, and the refrigerator becomes one of the household appliances indispensable in daily life of people.

Various refrigerators at present have more and more functions to meet different demands of users, such as a refrigerator with a water storage function, a water kettle is arranged in the refrigerator, the refrigerator is connected with a tap water pipe, and a water valve opens the water kettle. In addition, some refrigerators are also provided with ice-making machines, which can make ice water, ice cubes or ice sand by utilizing the cold energy of the storage compartments and provide the ice water, ice cubes or ice sand for users.

In the practical application scene, a user cannot know the water level in the water kettle in time, and if the water kettle lacks water, the ice making efficiency of the ice maker is affected. In the prior art, whether water exists in the water kettle is judged by judging whether water is fed successfully or not through an infrared sensor on the ice maker. However, there may be various reasons for the water inlet failure, such as the water pump not working, the waterway not communicating, etc., which may cause an error in judging the water level in the water kettle. In addition, the judgment process needs complex logic control to be realized, and the water in the kettle can be judged after ice is made twice, so that the judgment period is longer.

Disclosure of Invention

An object of the present invention is to accurately and efficiently determine the water level inside a water storage container.

The invention further aims to realize non-contact detection of the water level inside the water storage container, thereby improving the working reliability and the use safety.

The invention further aims to prompt a user in time when the water storage in the water storage container is insufficient, so that the working efficiency of the ice maker in the refrigerator is effectively ensured.

In particular, the present invention provides a water level detection method of a water storage container, wherein the water storage container includes: a housing defining a cavity therein for storing water; and the induction film paste is pasted outside the shell, the induction points of the induction film paste are conductors, the shell is an insulator, water stored in the cavity is a conductor, the three materials form a capacitor together, and the water level detection method comprises the following steps: acquiring an anhydrous capacitance threshold value and a water capacitance threshold value of the induction film patch, wherein the anhydrous capacitance threshold value is a capacitance value of the induction film patch when the water level height in the water storage container does not reach the position of the induction film patch, and the water capacitance threshold value is a capacitance value of the induction film patch when the water level height in the water storage container reaches the position of the induction film patch; collecting an actual capacitance value of the sensing film; and determining the water level height in the water storage container according to the actual capacitance value, the anhydrous capacitance threshold value and the water capacity threshold value.

Optionally, the step of determining the water level inside the water storage container according to the actual capacitance value, the anhydrous capacitance threshold value and the water capacity threshold value comprises the following steps: judging whether the absolute value of the difference value between the actual capacitance value and the anhydrous capacitance threshold value is smaller than a first preset value or not; and if so, determining that the water level height in the water storage container is lower than the position of the sensing film.

Optionally, the step of determining the water level inside the water storage container according to the actual capacitance value, the anhydrous capacitance threshold value and the water capacity threshold value comprises the following steps: judging whether the absolute value of the difference value between the actual capacitance value and the water capacitance threshold value is smaller than a second preset value; and if so, determining that the water level height in the water storage container is higher than or equal to the position of the sensing film.

Optionally, the step of collecting the actual capacitance value at the sensing film patch further comprises: counting the acquisition times of the actual capacitance value; judging whether the acquisition times are greater than or equal to a preset times threshold value; if so, calculating an average value of actual capacitance values of the preset times threshold, and determining the water level height in the water storage container according to the average value, the anhydrous capacitance threshold and the water capacity threshold.

Optionally, the water storage container is arranged in a refrigerating space of the refrigerator, and a display device is arranged on the outer surface of the door body of the refrigerator.

Optionally, the attaching position of one sensing film is an alarm height, and the step of determining the water level inside the water storage container further includes: judging whether the water level in the water storage container is lower than the alarm height; and if yes, controlling the display device to output alarm information so as to remind a user that the water storage container is insufficient in water storage.

Optionally, the control display device outputs the water level information of the water storage container under the condition that the water level height in the water storage container is higher than or equal to the alarm height.

Optionally, after the step of controlling the display device to output the alarm information or the water level information, the method further comprises: and resetting the collection times of the actual capacitance value, and returning to the step of collecting the actual capacitance value at the position where the induction film is attached.

Optionally, the sensing film patch is provided with four: the first sensing film patch, the second sensing film patch, the third sensing film patch and the fourth sensing film patch are respectively arranged at the positions of 1/4, 2/4, 3/4 and 4/4 of the height of the water storage container, the corresponding anhydrous capacitance threshold value of the first sensing film patch is a first capacitance threshold value, and the corresponding water capacitance threshold value is a second capacitance threshold value; the corresponding anhydrous capacitance threshold value of the second sensing film is a third capacitance threshold value, and the corresponding water capacitance threshold value is a fourth capacitance threshold value; the corresponding anhydrous capacitance threshold value of the third sensing film is a fifth capacitance threshold value, and the corresponding water capacitance threshold value is a sixth capacitance threshold value; the corresponding anhydrous capacitance threshold value of the fourth sensing film is a seventh capacitance threshold value, and the corresponding water capacitance threshold value is an eighth capacitance threshold value.

According to another aspect of the present invention, there is also provided a computer storage medium in which a computer program is stored, and which when run causes an apparatus in which the computer storage medium is located to perform any one of the water level detection methods of the water storage containers described above.

According to the water level detection method and the computer storage medium of the water storage container, the anhydrous capacitance threshold and the water-bearing capacitance threshold of the induction film patch are obtained, the actual capacitance value of the induction film patch is collected, the water level height inside the water storage container is determined according to the actual capacitance value, the anhydrous capacitance threshold and the water-bearing capacitance threshold, the water level height inside the water storage container can be judged in a simple mode, the water level height inside the water storage container can be accurately and efficiently determined, and the production cost is effectively saved while the accuracy is ensured.

Further, according to the water level detection method and the computer storage medium of the water storage container, the induction film is attached to the outside of the shell, so that non-contact detection of the water level inside the water storage container is realized, and the working reliability and the use safety are improved; under the condition that the water level in the water storage container is lower than the alarm height, the display device outputs alarm information to remind a user that the water storage in the water storage container is insufficient, so that the user can be reminded of supplementing water to the water storage container in time, the ice maker for making ice by using the water stored in the water storage container is prevented from being influenced, the working efficiency of the ice maker is effectively ensured, and the use experience of the user is improved; through setting up a plurality of response membrane subsides, realize multi-point measurement, can effectively avoid the easy circumstances such as malfunction, misjudgement that appear of single-point measurement, further guarantee the degree of accuracy of determining water level height.

The above, as well as additional objectives, advantages, and features of the present invention will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present invention when read in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:

fig. 1 is a schematic view showing the overall structure of a water container to which a water level detection method of the water container according to an embodiment of the present invention is applied;

fig. 2 is a schematic view showing the overall structure of a refrigerator to which a water level detection method of a water container according to an embodiment of the present invention is applied;

fig. 3 is a schematic view of an internal structure of the refrigerator of fig. 2;

fig. 4 is a control block diagram of the refrigerator of fig. 2;

fig. 5 is a schematic view of a water level detection method of a water storage container according to an embodiment of the present invention;

fig. 6 is a detailed flowchart of a water level detection method of a water storage container according to an embodiment of the present invention; and

FIG. 7 is a schematic diagram of a computer storage medium according to one embodiment of the invention.

Detailed Description

The embodiment firstly provides a water level detection method of a water storage container, which can judge the water level height inside the water storage container in a simple mode, accurately and efficiently determine the water level height inside the water storage container, ensure the accuracy and effectively save the production cost. Fig. 1 is a schematic view showing the overall structure of a water storage container 130 to which the water level detection method of the water storage container according to an embodiment of the present invention is applied. As shown in fig. 1, the water storage container 130 may generally include: a housing 135 and a sensing film patch.

Wherein the interior of the housing 135 defines a cavity for storing water. The induction film is attached to the outside of the shell 135, the induction points of the induction film are conductors, the shell 135 is an insulator, and water stored in the cavity is conductors, so that the three components together form a capacitor. In a specific embodiment, the sensing film is stuck with polyvinyl chloride material, and the sensing point is copper; the housing 135 is made of polypropylene. As shown in fig. 1, a handle 136 may be further provided on the outside of the housing 135 for a user to grasp, and to take and place the water storage container 130.

The actual capacitance value at the sensing film patch is different between the two different conditions that the water level inside the water storage container 130 is lower than the sensing film patch and higher than or equal to the sensing film patch, so that the water level inside the water storage container 130 can be determined. Specifically, it may be determined whether the water level inside the water storage container 130 is lower than the sensing film patch or higher than or equal to the sensing film patch.

In a preferred embodiment, an anhydrous capacitance threshold value and a water capacitance threshold value of the sensing film patch can be obtained, wherein the anhydrous capacitance threshold value is a capacitance value of the sensing film patch when the water level height inside the water storage container 130 does not reach the position of the sensing film patch, and the water capacitance threshold value is a capacitance value of the sensing film patch when the water level height inside the water storage container 130 reaches the position of the sensing film patch; collecting an actual capacitance value of the sensing film; the water level height inside the water storage container 130 is determined according to the actual capacitance value and the anhydrous capacitance threshold value, and the hydrated capacitance threshold value.

In a specific embodiment, the specific process of determining the water level inside the water storage container 130 according to the actual capacitance value and the anhydrous capacitance threshold, the water capacity threshold may include: judging whether the absolute value of the difference value between the actual capacitance value and the anhydrous capacitance threshold value is smaller than a first preset value or not; and if so, determining that the water level in the water storage container 130 is lower than the position of the sensing film.

That is, if the actual capacitance value is the same as or substantially similar to the threshold value of the anhydrous capacitance, it can be determined that the inside of the water storage container 130 corresponding to the sensing film is anhydrous, and the height of the water level inside the water storage container 130 is lower than the position of the sensing film. The first preset value can restrict the approximation degree of the actual capacitance value and the anhydrous capacitance threshold value. The first preset value can be preset according to the accuracy degree of the detection requirement, the requirement is more accurate, and the first preset value can be smaller; the requirements are relatively broad and the first preset value can be set relatively large. But the first preset value cannot be set too large, otherwise the water level height cannot be accurately determined.

The specific process of determining the water level inside the water storage container 130 according to the actual capacitance value and the anhydrous capacitance threshold, the hydrated capacitance threshold may further include: judging whether the absolute value of the difference value between the actual capacitance value and the water capacitance threshold value is smaller than a second preset value; and if so, determining that the water level in the water storage container 130 is higher than or equal to the position of the sensing film.

That is, if the actual capacitance value is the same as or substantially similar to the threshold value of the water-containing capacity, it can be determined that water exists in the water storage container 130 corresponding to the sensing film patch, and the height of the water level in the water storage container 130 is higher than or equal to the position of the sensing film patch. The second preset value can restrict the approximation degree of the actual capacitance value and the threshold value of the water capacitance. The second preset value can be preset according to the accuracy degree of the detection requirement, the requirement is more accurate, and the second preset value can be smaller; the requirements are relatively broad and the second preset value can be set relatively large. But the second preset value cannot be set too large, otherwise the water level height cannot be accurately determined. The first preset value and the second preset value may be the same or different, and may be specifically set according to actual situations.

In a preferred embodiment, a plurality of sensing film patches are provided, and the plurality of sensing film patches are disposed outside the housing at the same distance along the longitudinal direction. For example, as shown in fig. 1, the sensing film patch may be provided with four: the first sensing film patch 131, the second sensing film patch 132, the third sensing film patch 133 and the fourth sensing film patch 134 are respectively arranged at the positions of 1/4, 2/4, 3/4 and 4/4 of the height of the water storage container 130. The positions of 1/4, 2/4, 3/4 and 4/4 of the height of the water storage container 130 are all based on the bottom of the water storage container 130. That is, the first sensing film paste 131, the second sensing film paste 132, the third sensing film paste 133, and the fourth sensing film paste 134 are respectively disposed at positions 1/4, 2/4, 3/4, and 4/4 of the height of the water storage container 130 from bottom to top. Four sensing film patches are arranged on the height of the water storage container 130 in a quartering mode, the height of the internal water level of the water storage container 130 is approximately known according to the four sensing film patches, the structure is simplified, the production cost is reduced, and meanwhile the accuracy of determining the water level is considered.

In other embodiments, the sensing film patches may be provided in other numbers, for example, more may be provided, and the internal water level of the water storage container 130 may be more precisely known. The number of the sensing film patches may be set according to actual demands, such as accuracy demands for determining the water level height, and the like. Through setting up a plurality of response membrane subsides, realize multi-point measurement, can effectively avoid the easy circumstances such as malfunction, misjudgement that appear of single-point measurement.

As described above, the waterless capacitance threshold is a capacitance value of the sensing film patch when the water level height inside the water storage container 130 does not reach the position of the sensing film patch, and the water capacitance threshold is a capacitance value of the sensing film patch when the water level height inside the water storage container 130 reaches the position of the sensing film patch. In fact, in the case where a plurality of sensing film patches are provided, each sensing film patch is provided with one anhydrous capacitance threshold value and one hydrated capacitance threshold value, respectively.

For example, the anhydrous capacitance threshold corresponding to the first sensing film patch 131 is a first capacitance threshold, and the corresponding water capacitance threshold is a second capacitance threshold; the corresponding anhydrous capacitance threshold value of the second sensing film patch 132 is a third capacitance threshold value, and the corresponding hydrated capacitance threshold value is a fourth capacitance threshold value; the corresponding absolute capacitance threshold of the third sensing film patch 133 is a fifth capacitance threshold, and the corresponding watered capacitance threshold is a sixth capacitance threshold; the corresponding absolute capacitance threshold of the fourth sensing film patch 134 is the seventh capacitance threshold, and the corresponding watered capacitance threshold is the eighth capacitance threshold.

Note that, the first sensing film patch 131, the second sensing film patch 132, the third sensing film patch 133, and the fourth sensing film patch 134 respectively correspond to the anhydrous capacitance threshold values: the first capacitance threshold, the third capacitance threshold, the fifth capacitance threshold, the seventh capacitance threshold may be the same or different; the first sensing film patch 131, the second sensing film patch 132, the third sensing film patch 133 and the fourth sensing film patch 134 respectively correspond to the threshold value of the water capacitance: the second, fourth, sixth, eighth capacitance thresholds may be the same or different. Since each sensing film patch may have individual differences even though the type and model are identical, the capacitance value at each sensing film patch may be identical or may have some differences in both cases where the water level height is reached and not reached.

As shown in fig. 1, in a preferred embodiment, the first sensing film patch 131, the second sensing film patch 132, the third sensing film patch 133, and the fourth sensing film patch 134 are respectively disposed on the outside of the housing 135, and the first indicator lamp 161, the second indicator lamp 162, the third indicator lamp 163, and the fourth indicator lamp 164 are respectively disposed on the outside of the housing 135. When the water level in the water storage container 130 is higher than or equal to a certain sensing film, the indicator corresponding to the sensing film can be lighted up to show the position of the sensing film reached by the water level to the user. The on/off states of the first, second, third and fourth indication lamps 161, 162, 163 and 164 can more intuitively show the water level inside the water storage container 130.

For example, if the water level in the water storage container 130 is lower than the first sensing film 131, the first indicator lamp 161, the second indicator lamp 162, the third indicator lamp 163, and the fourth indicator lamp 164 may be in a non-lighted state. If the water level in the water storage container 130 is higher Yu Dengyu than the first sensing film 131 and lower than the second sensing film 132, the first indicator lamp 161 may be turned on, and the second indicator lamp 162, the third indicator lamp 163, and the fourth indicator lamp 164 may be turned off. If the water level in the water storage container 130 is higher Yu Dengyu than the second sensing film label 132 and lower than the third sensing film label 133, the first and second indicator lamps 161 and 162 may be turned on, and the third and fourth indicator lamps 163 and 164 may be turned off. If the water level in the water storage container 130 is higher Yu Dengyu than the third sensing film label 133 and lower than the fourth sensing film label 134, the first, second and third indicator lamps 161, 162, 163 may be turned on, and the fourth indicator lamp 164 may be turned off. If the water level in the water storage container 130 is high Yu Dengyu, the first indicator light 161, the second indicator light 162, the third indicator light 163, and the fourth indicator light 164 may be all turned on.

In another preferred embodiment, when the height of the water level inside the water storage container 130 is higher than or equal to a certain sensing film, the indicator light corresponding to the sensing film may display a first color; when the water level in the water storage container 130 is lower than a certain sensing film, the indicator corresponding to the sensing film can display a second color. The first, second, third and fourth indicator lamps 161, 162, 163 and 164 display different colors, and the water level inside the water storage container 130 is displayed to the user. For example, the first color may be green and the second color may be red.

If the water level inside the water storage container 130 is lower than the first sensing film 131, the first indicator light 161, the second indicator light 162, the third indicator light 163 and the fourth indicator light 164 may all display red color. If the water level in the water storage container 130 is higher Yu Dengyu than the first sensing film 131 and lower than the second sensing film 132, the first indicator 161 may display green, and the second indicator 162, the third indicator 163, and the fourth indicator 164 may display red. If the water level in the water storage container 130 is higher Yu Dengyu than the second sensing film label 132 and lower than the third sensing film label 133, the first and second indicator lamps 161 and 162 may display green, and the third and fourth indicator lamps 163 and 164 may display red. If the water level in the water storage container 130 is higher Yu Dengyu than the third sensing film label 133 and lower than the fourth sensing film label 134, the first, second and third indicator lamps 161, 162, 163 may display green color, and the fourth indicator lamp 164 may display red color. If the water level in the water storage container 130 is high Yu Dengyu, the fourth sensing film 134, the first, second, third and fourth indicator lamps 161, 162, 163, 164 may all be green. It should be noted that the specific color settings described above are only examples and are not meant to limit the present invention. In other embodiments, other colors may be set according to the actual situation.

It should be emphasized that the water level inside the water storage container 130 is lower than the position of the first sensing film 131, which indicates that the water storage inside the water storage container 130 is not enough, which may affect the normal use. For example, affecting the heating of the water storage container 130 for the user to drink, or the water storage container 130 supplying water to the ice maker 180, may affect the normal ice making operation of the ice maker 180. The position of the fourth sensing film 134, which is higher than the water level Yu Dengyu in the water storage container 130, indicates that the water storage container 130 is sufficiently filled and is almost in a full state, and care needs to be taken not to add water to the water storage container 130 any more, so that overflow is avoided.

Fig. 2 is a schematic view of the overall structure of a refrigerator 100 to which the water level detection method of the water storage container according to an embodiment of the present invention is applied, and fig. 3 is a schematic view of the internal structure of the refrigerator 100 of fig. 2. As shown in fig. 2 and 3, the water storage container 130 may be provided in the refrigerating space 111 of the refrigerator 100. That is, the refrigerator 100 has the water storage container 130 of any one of the embodiments described above. Specifically, the refrigerator 100 may include: a tank 110, a door 120, and a water container 130 according to any of the above embodiments.

Wherein, the interior of the case 110 defines a storage space. The door 120 is disposed on the front surface of the case 110 for closing the storage space. In one particular embodiment, the water reservoir 130 may be used for heating to warm the water inside to meet the user's drinking needs. In a preferred embodiment, the water storage container 130 may be made of 304 stainless steel, so that the water storage container 130 can be used for containing and heating drinking water without food safety problem, and the excellent heat transfer performance of stainless steel can effectively improve the heating efficiency.

The interior of the case 110 may define a plurality of storage spaces, and the number and structure of the storage spaces may be configured according to the need. Fig. 1 and 2 show the case of two storage spaces arranged in sequence from top to bottom, wherein each storage space may be respectively provided as a refrigerating space 111, a freezing space 112, a temperature changing space or a fresh keeping space. The interior of each storage space can be divided into a plurality of storage areas by a partition plate, and the storage areas are stored by utilizing racks or drawers. The two storage spaces of the refrigerator 100 of the present embodiment from top to bottom may be provided as a refrigerating space 111 and a freezing space 112, respectively.

The door 120 may be disposed at a front side of the case 110, so that a user can open or close the storage space of the refrigerator 100, and the door 120 is disposed corresponding to the storage space, i.e. each storage space corresponds to one or more doors 120. The door opening mode of the storage space can be pivoted to open, and drawer type opening can also be adopted to open so as to realize the drawer type storage space. Under the condition that the drawer is opened, a metal sliding rail can be arranged at the bottom of the drawer, so that the opening and closing are smooth, and the noise is reduced.

The refrigerator 100 may further include: the refrigeration system may be a refrigeration cycle system including a compressor, a condenser, a throttle device, an evaporator, a fan, and the like. Wherein the compressor can be installed in the compressor bin, and the evaporator and the fan can be arranged in the cooling chamber. In another embodiment, the evaporator and the fan may also be disposed within the supply air duct, which may then be considered a cooling chamber.

The refrigeration system provides different amounts of cold to the refrigerated space 111 and the refrigerated space 112 such that the temperatures within the refrigerated space 111 and the refrigerated space 112 are also different. Wherein the temperature in the refrigerated space 111 is typically between 2 ℃ and 10 ℃, preferably between 3 ℃ and 8 ℃. The temperature within the cryogen space 112 is typically in the range of-22 deg.c to-14 deg.c. The optimal storage temperatures of different kinds of foods are not the same, and thus the storage spaces suitable for storage are not the same. For example, fruit and vegetable foods are suitably stored in the refrigerating space 111, and meat foods are suitably stored in the freezing space 112.

The storage space of the refrigerator 100 of the present embodiment includes a refrigerating space 111 and a freezing space 112, and the water storage container 130 is disposed in the refrigerating space 111; and the refrigerator 100 may further include: the ice maker 180 is disposed in the refrigerating space 112, and a water inlet of the ice maker 180 is communicated with a water outlet of the water storage container 130 through a water supply pipeline. The refrigerator 100 may further include: the water pump is disposed on the water supply pipeline and configured to drive water stored in the water storage container 130 to flow to the ice maker 180 when the water pump is opened, so that the ice maker 180 can make ice. That is, after the water inside the water storage container 130 flows to the ice maker 180, the ice maker 180 may perform an ice making operation using the water as a raw material.

The ice maker 180 is disposed in the freezing compartment, and can make ice water, ice cubes, or ice sand using the low temperature of the freezing compartment. In practice, the ice maker 180 may include: a body, a filter, a dispenser, an ice bank, and an ice passage. When the water in the water storage container 130 flows to the icemaker 180, the water flows through the filter, the body, the ice bank, the ice passage and the dispenser in this order according to the flow path of the waterway, and is finally provided to the outside of the refrigerator 100 in the form of ice water, ice cubes or ice sand.

Fig. 4 is a control block diagram of the refrigerator 100 of fig. 2, and as shown in fig. 4, the refrigerator 100 may further include: a detection circuit 140 and a main control board 150. The detection circuit 140 is connected to the sensing point of the sensing film patch to detect the actual capacitance value at the sensing film patch. The main control board 150 is configured to obtain an anhydrous capacitance threshold value and a water capacitance threshold value of the induction film patch, wherein the anhydrous capacitance threshold value is a capacitance value of the induction film patch when the water level height inside the water storage container 130 does not reach the position of the induction film patch, and the water capacitance threshold value is a capacitance value of the induction film patch when the water level height inside the water storage container 130 reaches the position of the induction film patch; the actual capacitance value detected by the acquisition detection circuit 140; the water level height inside the water storage container 130 is determined according to the actual capacitance value and the anhydrous capacitance threshold value, and the hydrated capacitance threshold value.

That is, the detection circuit 140 detects the actual capacitance value of the sensing film, sends the actual capacitance value to the main control board 150, and the main control board 150 receives and collects the actual capacitance value and comprehensively compares the actual capacitance value with the obtained anhydrous capacitance threshold and the obtained water capacitance threshold to determine the water level inside the water container. Specifically, the detection circuit 140 is connected to the sensing point of the sensing film patch. In the case where a plurality of sensing film patches are provided, the detection circuit 140 is connected to a plurality of sensing points of the plurality of sensing film patches. For example, the detection circuit 140 may be connected to each of the four sensing points of the first sensing film patch 131, the second sensing film patch 132, the third sensing film patch 133, and the fourth sensing film patch 134 to detect the actual capacitance values at the four sensing film patches.

It should be noted that, the detection circuit 140 and the main control board 150 of the present embodiment are both disposed on the refrigerator 100, and are connected to the sensing film disposed on the water storage container 130, so as to determine the water level inside the water storage container 130. In other embodiments, the detection circuit 140 and the main control board 150 may also be directly disposed on the water storage container 130, so that the water storage container 130 integrates the sensing film, the detection circuit 140 and the main control board 150, and the determination of the water level height can be independently implemented. In addition, when the indicator lamp is provided on the water storage container 130, the specific condition of the water level height can be displayed by the indicator lamp.

In a preferred embodiment, the mounting position of one sensing film patch is the alarm height. The refrigerator 100 may further include: the display device 121 is disposed on the outer surface of the door 120. Also, in case that the water level inside the water storage container 130 is lower than the alarm height, the display device 121 outputs alarm information to remind the user that the water inside the water storage container 130 is not sufficiently stored; in the case where the water level in the water storage container 130 is equal to or higher than the alarm level, the display device 121 outputs the water level information of the water storage container 130.

For example, in the case of four sensing film patches shown in fig. 1, the placement position of the first sensing film patch 131 may be regarded as the alarm height. That is, in the case that the water level in the water storage container 130 is lower than 1/4 of the overall height, the water storage in the water storage container 130 is considered to be insufficient, and the user needs to be warned to prompt timely water replenishment. In other embodiments, other positions than 1/4 of the total height can be set as the alarm height, and the alarm height can be set according to practical situations, for example, according to the water replenishing requirement degree of the water storage container 130. If only one sensing film patch is arranged, the sensing film patch can be arranged at the position of the alarm height. That is, in the case where there is only one sensing film, it is possible to determine whether water replenishment is required by judging whether the water level is lower than the sensing film. In a word, no matter the quantity of sensing film subsides sets up to singly or a plurality of, all can realize reporting to the police in order to remind the function of moisturizing.

In a preferred embodiment, the refrigerator 100 may further include: and one end of the water inlet pipeline is connected with an external water source, the other end of the water inlet pipeline is positioned above the water inlet of the water storage container 130, and the water inlet pipeline is provided with a water valve 170 which is configured to enable drinking water from the external water source to flow to the storage container through the water inlet pipeline under the condition of opening. Specifically, the external water source can be a tap water source, and a filtering device can be further arranged in the water inlet pipeline to filter tap water into drinking water capable of being imported. In another specific embodiment, the external water source may be a potable water source, such that the direct flow to the water reservoir 130 is potable water that may be accessed without filtration.

The water level in the water storage container 130 is lower than the alarm level, which indicates that the water storage in the water storage container 130 is insufficient, and water needs to be timely supplemented, so that the normal operation of the water storage container 130 and the ice making operation of the ice maker 180 are prevented from being influenced. On the other hand, in the process of adding water to the water storage container 130, it is also necessary to pay attention to the water level not to be too high, so that the overflow phenomenon is avoided, and the storage environment and the use safety of the refrigerating space 111 are affected.

In a preferred embodiment, the attaching position of the fourth sensing film 134 may be used as the overflow height, and when the water level is higher than or equal to the overflow height, the water valve 170 may be timely reminded to close by the display device 121 to stop the water supply to the water storage container 130. Or, the water valve 170 can be automatically controlled according to the water level height inside the water storage container 130, and is automatically opened when the water level height is lower than the alarm height, and is automatically closed when the water level height is higher than or equal to the overflow height, so that the intelligent degree is effectively improved, and the use experience of a user is improved.

In a specific embodiment, the detection circuit 140 sends the data of the actual capacitance value to the main control board 150 through the bus, and the main control board 150 sends the processed related data to the display device 121 through serial communication, that is, uart communication, so that the display device 121 displays the water level height or alarm. In other embodiments, the main control board 150 may also send related data to other devices, for example, may send the related data to the APP in the mobile terminal of the user through the Wi-Fi module, so that the user may also receive a prompt in time when the user is not near the refrigerator 100, thereby effectively improving the use experience of the user.

Furthermore, in a preferred embodiment, the method may further comprise, after collecting the actual capacitance value at the sensing film patch: counting the acquisition times of the actual capacitance value; judging whether the acquisition times are greater than or equal to a preset times threshold value; and if so, calculating the average value of the actual capacitance values of the preset times threshold, and determining the water level height in the water storage container 130 according to the average value, the anhydrous capacitance threshold and the water capacity threshold. After the control display device 121 outputs the alarm information or the water level information, it may further include: and resetting the collection times of the actual capacitance value, and re-collecting the actual capacitance value at the position where the induction film is stuck.

In a specific embodiment, the preset number of times threshold may be 10 times. That is, for a sensing film patch, the actual capacitance value thereof can be acquired 10 times, then the average value of 10 data is calculated, and the average value is compared with the absolute capacitance threshold and the water capacitance threshold corresponding to the sensing film patch, so as to determine whether the water level height reaches the position where the sensing film patch is attached. It should be noted that, the specific values of the preset times threshold are only examples, and are not limiting to the present invention. In some embodiments, the preset number of times threshold may be preset according to actual situations.

The preset times threshold for collecting the actual capacitance value is limited, the average value can be calculated through multiple times of collection of the numerical value, the water level height is determined according to the comparison result of the average value, the anhydrous capacitance threshold and the watered capacitance threshold, the influence of abnormal data can be eliminated, and the judgment accuracy is further improved. Under the condition that a plurality of induction film patches are arranged, the acquisition times of the actual capacitance value of each induction film patch can all meet the threshold value of the preset times or more. For example, in the case where the first sensing film patch 131, the second sensing film patch 132, the third sensing film patch 133, and the fourth sensing film patch 134 are provided, the actual capacitance values may be collected 10 times for each of the first sensing film patch 131, the second sensing film patch 132, the third sensing film patch 133, and the fourth sensing film patch 134, and then the average value of the 10 actual capacitance values at each sensing film patch may be calculated, respectively.

Fig. 5 is a schematic view of a water level detection method of a water storage container according to an embodiment of the present invention. The water level detection method of the water storage container may be applied to the water storage container 130 of any of the above embodiments or the refrigerator 100 provided with the water storage container 130 of any of the above embodiments. As shown in fig. 5, the water level detection method of the water storage container may perform the steps of:

step S502, acquiring an anhydrous capacitance threshold value and a water capacitance threshold value of the induction film patch;

step S504, collecting an actual capacitance value of the sensing film;

step S506, determining the water level height inside the water storage container 130 according to the actual capacitance value, the anhydrous capacitance threshold value and the water capacity threshold value.

In the above steps, the anhydrous capacitance threshold in step S502 is the capacitance value of the sensing film patch when the water level in the water storage container 130 does not reach the position of the sensing film patch, and the water capacitance threshold is the capacitance value of the sensing film patch when the water level in the water storage container 130 reaches the position of the sensing film patch.

In a specific embodiment, the step S506 of determining the water level inside the water storage container 130 according to the actual capacitance value, the anhydrous capacitance threshold, and the water capacity threshold may specifically include: judging whether the absolute value of the difference value between the actual capacitance value and the anhydrous capacitance threshold value is smaller than a first preset value or not; and if so, determining that the water level in the water storage container 130 is lower than the position of the sensing film.

That is, if the actual capacitance value is the same as or substantially similar to the threshold value of the anhydrous capacitance, it can be determined that the inside of the water storage container 130 corresponding to the sensing film is anhydrous, and the height of the water level inside the water storage container 130 is lower than the position of the sensing film. The first preset value can restrict the approximation degree of the actual capacitance value and the anhydrous capacitance threshold value. The first preset value can be preset according to the accuracy degree of the detection requirement, the requirement is more accurate, and the first preset value can be smaller; the requirements are relatively broad and the first preset value can be set relatively large. But the first preset value cannot be set too large, otherwise the water level height cannot be accurately determined.

Step S506 may specifically further include determining a water level height inside the water storage container 130 according to the actual capacitance value and the anhydrous capacitance threshold, and the water capacitance threshold: judging whether the absolute value of the difference value between the actual capacitance value and the water capacitance threshold value is smaller than a second preset value; and if so, determining that the water level in the water storage container 130 is higher than or equal to the position of the sensing film.

That is, if the actual capacitance value is the same as or substantially similar to the threshold value of the water-containing capacity, it can be determined that water exists in the water storage container 130 corresponding to the sensing film patch, and the height of the water level in the water storage container 130 is higher than or equal to the position of the sensing film patch. The second preset value can restrict the approximation degree of the actual capacitance value and the threshold value of the water capacitance. The second preset value can be preset according to the accuracy degree of the detection requirement, the requirement is more accurate, and the second preset value can be smaller; the requirements are relatively broad and the second preset value can be set relatively large. But the second preset value cannot be set too large, otherwise the water level height cannot be accurately determined. The first preset value and the second preset value may be the same or different, and may be specifically set according to actual situations.

According to the water level detection method for the water storage container, the anhydrous capacitance threshold and the water-containing capacitance threshold of the sensing film patch are obtained, the actual capacitance value of the sensing film patch is collected, the water level height inside the water storage container 130 is determined according to the actual capacitance value, the anhydrous capacitance threshold and the water-containing capacitance threshold, the water level height inside the water storage container 130 can be judged in a simple mode, the water level height inside the water storage container 130 is accurately and efficiently determined, and the production cost is effectively saved while the accuracy is guaranteed.

In some alternative embodiments, the water storage container 130 or the refrigerator 100 may achieve a higher technical effect by further optimizing and configuring the above steps, and the following description is given in detail to the water level detection method of the water storage container according to this embodiment in conjunction with the description of an alternative execution flow, where the embodiment is merely illustrative of the execution flow, and when implemented, the execution sequence and the operation condition of some steps may be modified according to the specific implementation requirement. Fig. 6 is a detailed flowchart of a water level detection method of a water storage container according to an embodiment of the present invention, the water level detection method of the water storage container including the steps of:

Step S602, acquiring an anhydrous capacitance threshold value and a water capacitance threshold value of the induction film patch;

step S604, collecting an actual capacitance value of the sensing film;

step S606, counting the collection times of the actual capacitance value;

step S608, judging whether the acquisition times is greater than or equal to a preset times threshold, if so, executing step S610, and if not, returning to execute step S604;

step S610, calculating an average value of actual capacitance values of a preset time threshold;

step S612, determining the water level height inside the water storage container 130 according to the average value and the threshold value of the anhydrous capacitance and the threshold value of the water capacity;

step S614, judging whether the water level in the water storage container 130 is lower than the alarm level, if yes, executing step S618, otherwise, executing step S616;

step S616, controlling the display device 121 to output the water level information of the water storage container 130, and executing step S620;

step S618, controlling the display device 121 to output alarm information to remind the user that the water inside the water storage container 130 is not sufficiently stored;

step S620, the collection times of the actual capacitance value are cleared, and the step S604 is executed.

In the above step, the actual capacitance value of the sensing film is collected in step S604, specifically, the detection circuit 140 detects the actual capacitance value of the sensing film, and sends the actual capacitance value to the main control board 150, and the main control board 150 receives and collects the actual capacitance value.

In step S614, it is determined whether the water level in the water storage container 130 is lower than the alarm level, and regarding the alarm level, the setting position of one sensing film patch may be preset as the alarm level. For example, in the case of four sensing film patches shown in fig. 1, the placement position of the first sensing film patch 131 may be regarded as the alarm height. That is, in the case that the water level in the water storage container 130 is lower than 1/4 of the overall height, the water storage in the water storage container 130 is considered to be insufficient, and the user needs to be warned to prompt timely water replenishment.

The water level in the water storage container 130 is lower than the alarm level, which indicates that the water storage in the water storage container 130 is insufficient, and water needs to be timely supplemented, so that the normal operation of the water storage container 130 and the ice making operation of the ice maker 180 are prevented from being influenced. On the other hand, in the process of adding water to the water storage container 130, it is also necessary to pay attention to the water level not to be too high, so that the overflow phenomenon is avoided, and the storage environment and the use safety of the refrigerating space 111 are affected.

In a preferred embodiment, the attaching position of the fourth sensing film 134 may be used as the overflow height, and when the water level is higher than or equal to the overflow height, the water valve 170 may be timely reminded to close by the display device 121 to stop the water supply to the water storage container 130. Or, the water valve 170 can be automatically controlled according to the water level height inside the water storage container 130, and is automatically opened when the water level height is lower than the alarm height, and is automatically closed when the water level height is higher than or equal to the overflow height, so that the intelligent degree is effectively improved, and the use experience of a user is improved.

Step S606 counts the number of collection times of the actual capacitance value, step S608 determines whether the number of collection times is greater than or equal to a preset number of times threshold, and if yes, step S610 and step S612 are executed: the average value of the actual capacitance values of the preset number of times threshold is calculated, and the water level inside the water storage container 130 is determined according to the average value and the water-free capacitance threshold, the water-present capacitance threshold. Step S608 judges whether the collection times is greater than or equal to a preset time threshold, and if not, returns to execute step S604: and collecting an actual capacitance value of the sensing film. That is, if the number of acquisitions does not reach the preset number of threshold, the actual capacitance value needs to be acquired again until the preset number of threshold is reached.

It should be noted that, in the process of completing the collection of the preset time threshold, the height of the internal water level of the water storage container 130 is unchanged, that is, the water is not replenished to the water storage container 130, and the water in the water storage container 130 is not consumed, so that the capacitance state of the sensing film patch is unchanged when the actual capacitance value of the sensing film patch is collected for multiple times. Finally, the water level height inside the water storage container 130 is determined to be real and accurate according to the average value, the anhydrous capacitance threshold and the water capacitance threshold.

In a specific embodiment, the preset number of times threshold may be 10 times. That is, for a sensing film patch, the actual capacitance value thereof can be acquired 10 times, then the average value of 10 data is calculated, and the average value is compared with the absolute capacitance threshold and the water capacitance threshold corresponding to the sensing film patch, so as to determine whether the water level height reaches the position where the sensing film patch is attached. It should be noted that, the specific values of the preset times threshold are only examples, and are not limiting to the present invention. In some embodiments, the preset number of times threshold may be preset according to actual situations.

The preset times threshold for collecting the actual capacitance value is limited, the average value can be calculated through multiple times of collection of the numerical value, the water level height is determined according to the comparison result of the average value, the anhydrous capacitance threshold and the watered capacitance threshold, the influence of abnormal data can be eliminated, and the judgment accuracy is further improved. Under the condition that a plurality of induction film patches are arranged, the acquisition times of the actual capacitance value of each induction film patch can all meet the threshold value of the preset times or more. For example, in the case where the first sensing film patch 131, the second sensing film patch 132, the third sensing film patch 133, and the fourth sensing film patch 134 are provided, the actual capacitance values may be collected 10 times for each of the first sensing film patch 131, the second sensing film patch 132, the third sensing film patch 133, and the fourth sensing film patch 134, and then the average value of the 10 actual capacitance values at each sensing film patch may be calculated, respectively.

After executing step S616 to control the display device 121 to output the water level information of the water storage container 130, and step S618 to control the display device 121 to output the alarm information to remind the user that the water storage container 130 is not sufficiently stored, step S620 is executed: the collection times of the actual capacitance value are cleared, and the step S604 is executed again: and collecting an actual capacitance value of the sensing film. That is, after the alarm information or the water level information is outputted through the display device 121, the number of collection times can be cleared and a new water level detection process can be performed again.

In the water level detection method of the water storage container of the embodiment, the sensing film is attached to the outside of the shell 135, so that non-contact detection of the water level inside the water storage container 130 is realized, and the working reliability and the use safety are improved; under the condition that the water level in the water storage container 130 is lower than the alarm height, the display device 121 outputs alarm information to remind a user that the water storage in the water storage container 130 is insufficient, so that the user can be reminded of timely supplementing water to the water storage container 130, the ice maker 180 for making ice by using the water stored in the water storage container 130 is prevented from being influenced, the working efficiency of the ice maker 180 is effectively ensured, and the use experience of the user is improved; through setting up a plurality of response membrane subsides, realize multi-point measurement, can effectively avoid the easy circumstances such as malfunction, misjudgement that appear of single-point measurement, further guarantee the degree of accuracy of determining water level height.

The present embodiment also provides a computer storage medium 200, fig. 7 is a schematic diagram of the computer storage medium 200 according to an embodiment of the present invention, the computer storage medium 200 stores a computer program 201, and the computer program 201 when executed causes the apparatus of the computer storage medium 200 to execute the water level detection method of the water storage container according to any one of the embodiments. The device where the computer storage medium 200 is located is the water storage container 130 or the refrigerator 100 with the water storage container 130, and the water storage container 130 or the refrigerator 100 may execute the water level detection method of the water storage container according to any of the above embodiments.

The computer storage medium 200 of the present embodiment may be an electronic memory such as a flash memory, an EEPROM (electrically erasable programmable read only memory), an EPROM, a hard disk, or a ROM. The computer storage medium 200 has storage space for a computer program 201 for performing any of the method steps described above. These computer programs 201 may be read from or written to one or more computer program products. These computer program products comprise a program code carrier such as a hard disk, a Compact Disc (CD), a memory card or a floppy disk. The various steps of the methods described above may be performed by the device on which the computer storage medium 200 resides when running the computer program 201 described above.

By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described herein in detail, many other variations or modifications of the invention consistent with the principles of the invention may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (10)

1. A water level detection method of a water storage container, wherein the water storage container comprises: a housing defining a cavity therein for storing water; and the induction film paste is pasted outside the shell, the induction points of the induction film paste are conductors, the shell is an insulator, water stored in the cavity is a conductor, the three components form a capacitor together, and the water level detection method comprises the following steps:

acquiring a water-free capacitance threshold and a water-containing capacitance threshold of the induction film patch, wherein the water-free capacitance threshold is a capacitance value of the induction film patch when the water level inside the water storage container does not reach the position of the induction film patch, and the water-containing capacitance threshold is a capacitance value of the induction film patch when the water level inside the water storage container reaches the position of the induction film patch;

Collecting an actual capacitance value of the sensing film; and

and determining the water level height inside the water storage container according to the actual capacitance value, the anhydrous capacitance threshold value and the water-filled capacitance threshold value.

2. The water level detection method of a water storage container according to claim 1, wherein the step of determining the water level height inside the water storage container from the actual capacitance value and the anhydrous capacitance threshold value, the water-filled capacitance threshold value comprises:

judging whether the absolute value of the difference value between the actual capacitance value and the anhydrous capacitance threshold value is smaller than a first preset value or not; and

if yes, determining that the water level height inside the water storage container is lower than the position of the sensing film.

3. The water level detection method of a water storage container according to claim 2, wherein the step of determining the water level height inside the water storage container from the actual capacitance value and the anhydrous capacitance threshold value, the water-present capacitance threshold value comprises:

judging whether the absolute value of the difference value between the actual capacitance value and the water-filled electricity threshold value is smaller than a second preset value; and

if yes, determining that the water level height in the water storage container is higher than or equal to the position of the induction film.

4. The water level detection method of a water storage container according to claim 1, wherein after the step of collecting the actual capacitance value at the sensing film patch, further comprising:

counting the collection times of the actual capacitance value;

judging whether the acquisition times are greater than or equal to a preset times threshold value; and

if yes, calculating the average value of the actual capacitance values of the preset times threshold, and determining the water level height inside the water storage container according to the average value, the anhydrous capacitance threshold and the water-filled capacitance threshold.

5. The water level detection method of a water container according to claim 4, wherein,

the water storage container is arranged in the refrigerating space of the refrigerator and

the refrigerator door is characterized in that a display device is arranged on the outer surface of the refrigerator door.

6. The water level detection method of a water container according to claim 5, wherein,

the attaching position of one sensing film is the alarm height, and

the step of determining the level of the water inside the water container further comprises:

judging whether the water level height in the water storage container is lower than the alarm height; and

if yes, controlling the display device to output alarm information so as to remind a user that the water storage container is insufficient in water storage.

7. The water level detection method of a water container as claimed in claim 6, wherein,

and under the condition that the water level height in the water storage container is higher than or equal to the alarm height, controlling the display device to output the water level information of the water storage container.

8. The water level detection method of a water storage container according to claim 6 or 7, wherein after the step of controlling the display device to output the alarm information or the water level information, further comprising:

and resetting the collection times of the actual capacitance values, and returning to the step of collecting the actual capacitance values at the positions where the induction films are attached.

9. The water level detection method of a water storage container according to claim 1, wherein,

the induction film is provided with four: the first sensing film paste, the second sensing film paste, the third sensing film paste and the fourth sensing film paste are respectively arranged at the positions of 1/4, 2/4, 3/4 and 4/4 of the height of the water storage container, and

the corresponding anhydrous capacitance threshold value of the first sensing film patch is a first capacitance threshold value, and the corresponding water capacitance threshold value is a second capacitance threshold value;

the corresponding anhydrous capacitance threshold value of the second sensing film patch is a third capacitance threshold value, and the corresponding water capacitance threshold value is a fourth capacitance threshold value;

The corresponding anhydrous capacitance threshold value of the third sensing film patch is a fifth capacitance threshold value, and the corresponding water capacitance threshold value is a sixth capacitance threshold value;

and the corresponding anhydrous capacitance threshold value of the fourth sensing film patch is a seventh capacitance threshold value, and the corresponding water capacitance threshold value is an eighth capacitance threshold value.

10. A computer storage medium in which a computer program is stored and which, when run, causes an apparatus in which the computer storage medium is located to perform the water level detection method of the water storage container according to any one of claims 1 to 9.

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