CN113670408A - Dish washing machine liquid level detection method and device and dish washing machine - Google Patents
Dish washing machine liquid level detection method and device and dish washing machine Download PDFInfo
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- CN113670408A CN113670408A CN202111077396.6A CN202111077396A CN113670408A CN 113670408 A CN113670408 A CN 113670408A CN 202111077396 A CN202111077396 A CN 202111077396A CN 113670408 A CN113670408 A CN 113670408A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
- G01F23/263—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4244—Water-level measuring or regulating arrangements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Washing And Drying Of Tableware (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention provides a dishwasher liquid level detection method, a device and dishwasher liquid level detection equipment, wherein the method comprises the following steps: acquiring the total capacitance capacity of the first capacitance type liquid level detection device and the second capacitance type liquid level detection device; and determining a liquid level detection result of the dish washing machine based on the relation between the total capacitance capacity after the first capacitance type liquid level detection device and the second capacitance type liquid level detection device are charged and a preset reference capacitance. Thereby through utilizing two capacitive liquid level detection equipment that set up in the different positions of dish washer to charge to the two according to predetermineeing voltage, then through detecting the relation of total capacitance capacity after the two charges and predetermineeing reference capacitance, realize dish washer inner bag inflow simultaneously and detect and overflow and detect the function, thereby practiced thrift the expense of carrying out the required hardware resource of liquid level detection in the dish washer, the cost is reduced.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a dishwasher liquid level detection method and device and a dishwasher.
Background
At present, a dishwasher has become one of the most commonly used home appliances. Need detect the water in the dish washer at dish washer operation in-process to whether the inflow in the judgement inner bag reaches the requirement, after the inflow reaches the requirement, if continue to intake then can lead to water to spill over the dish washer casing from the inner bag, consequently also need judge whether the overflow phenomenon appears in the dish washer, and then intake to the dish washer and control, in order to avoid causing the damage to the dish washer.
However, in the prior art, can be through utilizing capacitanc liquid level detection principle promptly the capacitance value can rise along with the liquid level and take place corresponding change, thereby realize the inflow detection of dish washer, also can utilize it to realize dish washer overflow and detect, but two kinds of detections exist alone, a detection port can only detect a capacitance value, obtain a liquid level measuring result, when needing to realize inflow detection and overflow detection simultaneously to dish washer, can only set up two independent capacitanc liquid level detection circuit and handle the chip and detect respectively, cause the waste of hardware resources, increase the detection cost.
Disclosure of Invention
In view of this, embodiments of the present invention provide a method and an apparatus for detecting a liquid level of a dishwasher and the dishwasher, so as to overcome the problem in the prior art that hardware resources are high in cost for realizing different liquid level detection requirements of the dishwasher.
According to a first aspect, an embodiment of the present invention provides a method for detecting a liquid level of a dishwasher, where a first capacitive liquid level detecting device is disposed in an inner container of the dishwasher, a second capacitive liquid level detecting device is disposed at a bottom of a housing of the dishwasher, a maximum capacitance of the first capacitive liquid level detecting device is a preset reference capacitance, and the preset reference capacitance is a capacitance value corresponding to the first capacitive liquid level detecting device when water in the inner container meets a preset water inflow requirement of the dishwasher, and the dishwasher further includes: the charging module is respectively connected with the first capacitive liquid level detection device and the second capacitive liquid level detection device and respectively charges the first capacitive liquid level detection device and the second capacitive liquid level detection device according to a preset voltage; the method comprises the following steps:
acquiring the total capacitance capacity of the first capacitance type liquid level detection device and the second capacitance type liquid level detection device after charging is completed;
determining a liquid level detection result of the dishwasher based on a relation between a total capacitance capacity of the first capacitive liquid level detection device and the second capacitive liquid level detection device and the preset reference capacitance, the liquid level detection result comprising: a water inflow detection result and an overflow detection result.
Optionally, the determining a liquid level detection result of the dishwasher based on a relation between a total capacitance capacity of the first capacitive liquid level detection device and the second capacitive liquid level detection device and the preset reference capacitance includes:
judging whether the current total capacitance capacity reaches the preset reference capacitance or not;
and when the current total capacitance capacity reaches the preset reference capacitance, generating a liquid level detection result that the dish-washing machine reaches the preset water inflow requirement of the dish-washing machine.
Optionally, after the current total capacitance capacity reaches the preset reference capacitance, the method further includes:
judging whether the current total capacitance capacity exceeds the preset reference capacitance or not;
and when the current total capacitance capacity exceeds the preset reference capacitance, generating a liquid level detection result of the dishwasher when the dishwasher overflows.
Optionally, the maximum capacitance of the second capacitive liquid level detection device is greater than the preset reference capacitance, and the minimum capacitance of the first capacitive liquid level detection device and the minimum capacitance of the second capacitive liquid level detection device are both smaller than the preset reference capacitance.
Optionally, the determining whether the current total capacitance capacity reaches the preset reference capacitance includes:
acquiring the charging time of the first capacitive liquid level detection device and the second capacitive liquid level detection device to the preset voltage;
judging whether the charging time reaches a preset charging time corresponding to the preset reference capacitor;
and when the charging time reaches the preset charging time corresponding to the preset reference capacitor, determining that the current total capacitor capacity reaches the preset reference capacitor.
Optionally, the determining whether the current total capacitance capacity exceeds the preset reference capacitance includes:
judging whether the charging time length exceeds a preset charging time length corresponding to the preset reference capacitor;
when the charging time length exceeds a preset charging time length corresponding to the preset reference capacitor, judging whether the charging time length exceeds a preset multiple of the preset charging time length;
and when the charging time length exceeds a preset multiple of the preset charging time length, determining that the current total capacitance capacity exceeds the preset reference capacitance.
Optionally, when the first capacitive liquid level detection device and the second capacitive liquid level detection device cannot be charged to the preset voltage, a liquid level detection result that the dishwasher overflows is generated.
According to a second aspect, an embodiment of the present invention provides a liquid level detection device for a dishwasher, wherein a first capacitive liquid level detection device is disposed in an inner container of the dishwasher, a second capacitive liquid level detection device is disposed at a bottom of a housing of the dishwasher, a maximum capacitance of the first capacitive liquid level detection device is a preset reference capacitance, the preset reference capacitance is a capacitance value corresponding to the first capacitive liquid level detection device when water in the inner container meets a preset water inflow requirement of the dishwasher, and the dishwasher further includes: the charging module is respectively connected with the first capacitive liquid level detection device and the second capacitive liquid level detection device and respectively charges the first capacitive liquid level detection device and the second capacitive liquid level detection device according to a preset voltage; the device comprises:
the acquisition module is used for acquiring the total capacitance capacity of the first capacitive liquid level detection device and the second capacitive liquid level detection device after charging is finished;
a processing module, configured to determine a liquid level detection result of the dishwasher based on a relationship between a total capacitance capacity of the first capacitive liquid level detection device and the second capacitive liquid level detection device and the preset reference capacitance, where the liquid level detection result includes: a water inflow detection result and an overflow detection result.
According to a third aspect, embodiments of the present invention provide a dishwasher level detection apparatus comprising:
the first capacitance type liquid level detection device is arranged in an inner container of the dish washing machine, the maximum capacitance of the first capacitance type liquid level detection device is a preset reference capacitance, and the preset reference capacitance is a capacitance value corresponding to the first capacitance type liquid level detection device when water in the inner container meets the preset water inflow requirement of the dish washing machine;
the second capacitance type liquid level detection device is arranged at the bottom of the shell of the dishwasher;
the charging module is respectively connected with the first capacitive liquid level detection device and the second capacitive liquid level detection device and respectively charges the first capacitive liquid level detection device and the second capacitive liquid level detection device according to a preset voltage;
respectively with first capacitanc liquid level detection equipment with the control module that second capacitanc liquid level detection equipment is connected, control module includes:
a memory and a processor, the memory and the processor being communicatively connected to each other, the memory having stored therein computer instructions, the processor being configured to execute the computer instructions to perform the method according to the first aspect and any one of the optional embodiments thereof.
According to a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium storing computer instructions for causing a computer to perform the method of the first aspect, or any one of the optional implementation manners of the first aspect.
The technical scheme of the invention has the following advantages:
according to the dishwasher liquid level detection method, the dishwasher liquid level detection device and the dishwasher liquid level detection device, the first capacitance type liquid level detection device is arranged in the inner container of the dishwasher, the second capacitance type liquid level detection device is arranged at the bottom of the shell of the dishwasher, the maximum capacitance of the first capacitance type liquid level detection device is a preset reference capacitance, the preset reference capacitance is a capacitance value corresponding to the first capacitance type liquid level detection device when water in the inner container meets the preset water inflow requirement of the dishwasher, the charging module is respectively connected with the first capacitance type liquid level detection device and the second capacitance type liquid level detection device, and the charging module respectively charges the first capacitance type liquid level detection device and the second capacitance type liquid level detection device according to preset voltage; then, acquiring the total capacitance capacity of the first capacitance type liquid level detection device and the second capacitance type liquid level detection device; and determining a liquid level detection result of the dish washing machine based on the relation between the total capacitance capacity after the first capacitance type liquid level detection device and the second capacitance type liquid level detection device are charged and a preset reference capacitance. Thereby through utilizing two capacitive liquid level detection equipment that set up in the different positions of dish washer to charge to the two according to predetermineeing voltage, then through detecting the relation of total capacitance capacity after the two charges and predetermineeing reference capacitance, realize dish washer inner bag inflow simultaneously and detect and overflow and detect the function, thereby practiced thrift the expense of carrying out the required hardware resource of liquid level detection in the dish washer, the cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural view of a dishwasher level detection apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a level sensor according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an equivalent circuit for level detection in an embodiment of the present invention;
FIG. 4 is a flow chart of a dishwasher level detection method according to an embodiment of the present invention;
FIG. 5 is a schematic view of a dishwasher level detection apparatus according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a control module in the dishwasher level detection apparatus according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
At present, a dishwasher has become one of the most commonly used home appliances. Need detect the water in the dish washer at dish washer operation in-process to whether the inflow in the judgement inner bag reaches the requirement, after the inflow reaches the requirement, if continue to intake then can lead to water to spill over the dish washer casing from the inner bag, consequently also need judge whether the overflow phenomenon appears in the dish washer, and then intake to the dish washer and control, in order to avoid causing the damage to the dish washer.
However, in the prior art, can be through utilizing capacitanc liquid level detection principle promptly the capacitance value can rise along with the liquid level and take place corresponding change, thereby realize the inflow detection of dish washer, also can utilize it to realize dish washer overflow and detect, but two kinds of detections exist alone, a detection port can only detect a capacitance value, obtain a liquid level measuring result, when needing to realize inflow detection and overflow detection simultaneously to dish washer, can only set up two independent capacitanc liquid level detection circuit and handle the chip and detect respectively, cause the waste of hardware resources, increase the detection cost.
Based on the above problem, an embodiment of the present invention provides a dishwasher level detecting apparatus, including: the first capacitance type liquid level detection device 1 is arranged in an inner container of the dish washing machine, the maximum capacitance of the first capacitance type liquid level detection device 1 is a preset reference capacitance, and the preset reference capacitance is a capacitance value corresponding to the first capacitance type liquid level detection device 1 when water in the inner container meets the preset water inflow requirement of the dish washing machine; the second capacitance type liquid level detection device 2 is arranged at the bottom of the shell of the dish washing machine; the charging module 3 is respectively connected with the first capacitive liquid level detection device 1 and the second capacitive liquid level detection device 2, and the charging module 3 respectively charges the first capacitive liquid level detection device 1 and the second capacitive liquid level detection device 2 according to preset voltage; and the control module 4 is respectively connected with the first capacitance type liquid level detection device 1 and the second capacitance type liquid level detection device 2. The control module 4 is used for acquiring the total capacitance capacity of the first capacitive liquid level detection device 1 and the second capacitive liquid level detection device 2 after charging is completed; based on the relation between the total capacitance capacity of the first capacitance type liquid level detection device 1 and the second capacitance type liquid level detection device 2 and the preset reference capacitance, determining the liquid level detection result of the dish washing machine, wherein the liquid level detection result comprises: a water inflow detection result and an overflow detection result.
According to the dishwasher liquid level detection device provided by the embodiment of the invention, the two capacitive liquid level detection devices arranged at different positions of the dishwasher are utilized and charged according to the preset voltage, and then the relation between the total capacitance capacity after the charging of the two capacitive liquid level detection devices and the preset reference capacitance is detected, so that the functions of detecting the water inflow of the inner container of the dishwasher and detecting the overflow water are realized simultaneously, the expenditure of hardware resources required by liquid level detection in the dishwasher is saved, and the cost is reduced.
The first capacitive liquid level detection device 1 and the second capacitive liquid level detection device 2 may employ an existing capacitive liquid level sensor or other capacitive liquid level detectors, for example, the first capacitive liquid level detection device 1 may employ a container a as shown in fig. 2, the container a is disposed in a liner of a dishwasher, a lower end of the container is in contact with water in the liner, and an upper end of the container is disposed with a corresponding dielectric layer, so that the dielectric layer and the water in the container form an equivalent capacitor C _ a as a sensor of the liquid level of the liner, since the area of a plane S1 in the container a is equal to that of a plane S2, the liquid level in the container a rises, and the capacitance value of C _ a rises; the second capacitive liquid level detection device 2 may be a container B as shown in fig. 2, which is disposed at the bottom of the dishwasher housing, and constitutes an equivalent capacitor C _ B as a sensor for detecting overflow, similar to the principle of the container a, wherein the area of the plane S3 is equal to the area of the plane S4, and when overflow occurs, the liquid level in the container B rises, and the volume value of C _ B rises. The invention is not limited thereto. It should be noted that, in the embodiment of the present invention, as shown in fig. 2, by setting the sectional area of the container B to be much larger than the sectional area of the container a, once an overflow occurs, a small amount of liquid level may cause a drastic change of the equivalent capacitor C _ B, so that the dishwasher level detection apparatus is more sensitive to the overflow detection, and the accuracy and timeliness of the overflow detection are improved.
Specifically, in the embodiment of the present invention, the equivalent capacitors C _ a and C _ b and the preset reference capacitor C _ mod satisfy the following three relationships: c _ b maximum capacity is greater than 10 times C _ a maximum capacity; c _ mod capacity is equal to C _ a maximum capacity; the minimum capacity of C _ a, C _ b is much smaller than that of C _ mod. C _ b maximum capacity greater than 10 times C _ a maximum capacity: the liquid level of the container B rises, the change of C _ B is large so as to distinguish the change of C _ a, and when the change is several times of C _ mod, the overflow fault is entered; c _ mod capacity is equal to C _ a maximum capacity: the liquid level of the container A rises, and the change of the volume of C _ a is referenced by C _ mod without large deviation; the liquid level of the container A can be accurately judged; the minimum capacity of C _ a, C _ b is much smaller than that of C _ mod: in the initial state, the containers A and B have no liquid level, and the capacity values C _ a and C _ B are very small, so that the reference capacitance value setting of C _ mod is not influenced. By limiting the relation between equivalent capacitors, the total capacitor capacity after charging is obviously different under the condition of different liquid levels, so that the accuracy of the final liquid level detection result is improved.
Illustratively, when water is normally fed, the liquid level of the container A rises, the capacity of C _ a is changed, and when C _ a is C _ mod, the total capacity of the two equivalent capacitors is the preset reference capacitor C _ mod, and the preset target water inflow can be judged to be reached by monitoring whether the time of reaching the preset charging voltage reaches the time of charging the preset reference capacitor to the preset voltage.
When overflow occurs, the liquid level of the container B rises due to the large areas of the planes S3 and S4, C _ B changes greatly and can exceed C _ a quickly, so that the total charging time is increased by multiples of C _ mod, and the overflow state is judged; finally, the two planes S3 and S4 of C _ b are short-circuited by contact, and C _ a + C _ b cannot be charged to the predetermined charging voltage, and thus the overflow state is determined.
In particular, the equivalent capacitance of the container a and the container B can be determined according to the structural size of the dishwasher, where the formula C ═ S/d, where ∈: the two planar intermediate media are well-done, here air; s: two planar effective cross-sectional areas; d: the spacing of the two planes; then, the preset reference capacitance C _ mod is determined.
Exemplarily, let e be 1, S1 ═ S2 ═ 5, d1 (minimum) ═ 5; c _ a (max) 1uF can be calculated; the structure is matched to adjust the container B so that C _ B is greater than 10 ANG _ C _ a (max); when S3 is S4 is 50 and d2 is 5, C _ b is 10uF, and when d2 is less than 5, C _ b is more than 10 uF; if C _ mod is equal to C _ a (max) is equal to 1uF, the preset reference capacitance may be set to 1 uF.
Specifically, as shown in fig. 3, the equivalent circuit structure formed by the charging module 3, the equivalent capacitor C _ a and the equivalent capacitor C _ b is shown in fig. 3, wherein the two planes S1 and S3 are connected to GND, S2 and S4 are connected to the charging module 3 after being connected to the resistor R1, and the charging module 3 charges S2 and S4 through the resistor R1 according to a predetermined voltage. The control module 4 is configured to implement the data detection and analysis process. For details and specific working procedures of the control module 4, reference is made to the following description of embodiments of dishwasher level detection methods, and further description is omitted here.
The embodiment of the invention also provides a dishwasher liquid level detection method, which is applied to the control module 4 shown in figure 1, and as shown in figure 4, the dishwasher liquid level detection method specifically comprises the following steps:
step S101: and acquiring the total capacitance capacity of the first capacitance type liquid level detection device and the second capacitance type liquid level detection device after charging is completed.
Step S102: and determining a liquid level detection result of the dishwasher based on the relation between the total capacitance capacity of the first capacitance type liquid level detection device and the second capacitance type liquid level detection device and a preset reference capacitance.
Wherein, the liquid level testing result includes: a water inflow detection result and an overflow detection result.
By executing the steps, the dishwasher liquid level detection method provided by the embodiment of the invention charges two capacitive liquid level detection devices arranged at different positions of the dishwasher according to the preset voltage, and simultaneously realizes the functions of detecting the water inflow of the inner container of the dishwasher and detecting the overflow water by detecting the relation between the total capacitance capacity after the charging of the two capacitive liquid level detection devices and the preset reference capacitance, thereby saving the expenditure of hardware resources required by liquid level detection in the dishwasher and reducing the cost.
Specifically, the maximum capacitance of the second capacitive liquid level detection device is greater than the preset reference capacitance, and the minimum capacitance of the first capacitive liquid level detection device and the minimum capacitance of the second capacitive liquid level detection device are both less than the preset reference capacitance. Therefore, by limiting the relation between equivalent capacitors of the two capacitive liquid level detection devices, the total capacitance after charging is obviously different under the condition of different liquid levels, and the accuracy of the final liquid level detection result is improved.
Specifically, in an embodiment, the step S102 specifically includes the following steps:
step S201: and judging whether the current total capacitance capacity reaches a preset reference capacitance.
Specifically, the charging time for charging the first capacitive liquid level detection device and the second capacitive liquid level detection device to a preset voltage is obtained; judging whether the charging time reaches a preset charging time corresponding to a preset reference capacitor; and when the charging time reaches the preset charging time corresponding to the preset reference capacitor, determining that the current total capacitor capacity reaches the preset reference capacitor.
Step S202: and when the current total capacitance capacity reaches the preset reference capacitance, generating a liquid level detection result that the dish-washing machine meets the preset water inflow requirement of the dish-washing machine.
Step S203: and judging whether the current total capacitance capacity exceeds a preset reference capacitance.
Specifically, whether the charging time length exceeds a preset charging time length corresponding to a preset reference capacitor is judged; when the charging time length exceeds a preset charging time length corresponding to a preset reference capacitor, judging whether the charging time length exceeds a preset multiple of the preset charging time length; and when the charging time length exceeds a preset multiple of the preset charging time length, determining that the current total capacitance capacity exceeds a preset reference capacitance.
Step S204: and when the current total capacitance capacity exceeds a preset reference capacitance, generating a liquid level detection result of the dish washing machine when the dish washing machine overflows.
Therefore, different capacitors are used for achieving different unified preset charging voltages under different capacities, the current capacity of the capacitor can be accurately reflected by monitoring the charging duration, the problems that the capacity of the capacitor is difficult to directly detect, and the accuracy of a detection result cannot be guaranteed are solved, and the accuracy of a final detection result is improved.
Specifically, in an embodiment, the above method for detecting a liquid level of a dishwasher further includes the following steps:
step S103: and when the first capacitance type liquid level detection device and the second capacitance type liquid level detection device cannot be charged to a preset voltage, generating a liquid level detection result of the dish washing machine when the dish washing machine overflows.
Therefore, the problem that the detection result cannot be obtained due to the problems of capacitance faults or short circuits and the like is avoided, and the overflow fault result is prompted, so that the maintainer can timely overhaul related circuits and equipment.
The dishwasher liquid level detection method provided by the embodiment of the invention judges the size of the capacity of the equivalent capacitors C _ a and C _ b by charging the equivalent capacitors C _ a and C _ b and detecting the time of the total capacitor voltage reaching the preset charging voltage, further judges the states of the equivalent capacitors C _ a and C _ b, and can judge the liquid level corresponding to the inner container and the liquid level detection result of whether the inner container overflows according to the feedback signal, thereby realizing the detection of two liquid level functions only by one set of hardware equipment, saving hardware resources, and realizing simplicity, high reliability and low cost.
The embodiment of the invention also provides a dishwasher level detection device, which is applied to the control module 4 of the dishwasher level detection device shown in figure 1, and as shown in figure 5, the dishwasher level detection device comprises:
the acquiring module 101 is configured to acquire a total capacitance capacity of the first capacitive liquid level detecting device and the second capacitive liquid level detecting device after charging is completed. For details, refer to the related description of step S101 in the above method embodiment, and no further description is provided here.
A processing module 102, configured to determine a liquid level detection result of the dishwasher based on a relationship between a total capacitance capacity of the first capacitive liquid level detection device and the second capacitive liquid level detection device and a preset reference capacitance, where the liquid level detection result includes: a water inflow detection result and an overflow detection result. For details, refer to the related description of step S102 in the above method embodiment, and no further description is provided here.
The dishwasher level detection device provided by the embodiment of the invention is used for executing the dishwasher level detection method provided by the embodiment, the implementation mode and the principle are the same, and the detailed content refers to the relevant description of the embodiment of the method and is not repeated.
Through the cooperative cooperation of the components, the dishwasher liquid level detection device provided by the embodiment of the invention charges the two capacitive liquid level detection devices arranged at different positions of the dishwasher according to the preset voltage, and simultaneously realizes the functions of detecting the water inflow of the inner container of the dishwasher and detecting the overflow water by detecting the relation between the total capacitance capacity of the two charged devices and the preset reference capacitance, thereby saving the expenditure of hardware resources required by liquid level detection in the dishwasher and reducing the cost.
Specifically, as shown in fig. 6, the control module 4 shown in fig. 1 specifically includes: a processor 901 and a memory 902, wherein the processor 901 and the memory 902 may be connected by a bus or by other means, and fig. 6 illustrates an example of a connection by a bus.
The memory 902, which is a non-transitory computer-readable storage medium, may be used to store non-transitory software programs, non-transitory computer-executable programs, and modules, such as program instructions/modules corresponding to the methods in the above-described method embodiments. The processor 901 executes various functional applications and data processing of the processor by executing non-transitory software programs, instructions and modules stored in the memory 902, that is, implements the methods in the above-described method embodiments.
The memory 902 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function; the storage data area may store data created by the processor 901, and the like. Further, the memory 902 may include high speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory 902 may optionally include memory located remotely from the processor 901, which may be connected to the processor 901 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
One or more modules are stored in the memory 902, which when executed by the processor 901 performs the methods in the above-described method embodiments.
The details of the dishwasher level detection device can be understood by referring to the corresponding related descriptions and effects in the above embodiments, and are not described herein again.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, and the implemented program can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic Disk, an optical Disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a Flash Memory (Flash Memory), a Hard Disk (Hard Disk Drive, abbreviated as HDD) or a Solid State Drive (SSD), etc.; the storage medium may also comprise a combination of memories of the kind described above.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (10)
1. The utility model provides a dish washer liquid level detection method, its characterized in that, be provided with first capacitanc liquid level detection equipment in the inner bag of dish washer, the casing bottom of dish washer is provided with second capacitanc liquid level detection equipment, first capacitanc liquid level detection equipment's maximum capacitance is preset reference capacitance, preset reference capacitance does when water in the inner bag reaches dish washer preset inflow requirement, the capacitance value that first capacitanc liquid level detection equipment corresponds, still include in the dish washer: the charging module is respectively connected with the first capacitive liquid level detection device and the second capacitive liquid level detection device and respectively charges the first capacitive liquid level detection device and the second capacitive liquid level detection device according to a preset voltage; the method comprises the following steps:
acquiring the total capacitance capacity of the first capacitance type liquid level detection device and the second capacitance type liquid level detection device after charging is completed;
determining a liquid level detection result of the dishwasher based on a relation between a total capacitance capacity of the first capacitive liquid level detection device and the second capacitive liquid level detection device and the preset reference capacitance, the liquid level detection result comprising: a water inflow detection result and an overflow detection result.
2. The method of claim 1, wherein said determining a level detection result of the dishwasher based on a relationship of a total capacitance capacity of the first and second capacitive level detection devices to the preset reference capacitance comprises:
judging whether the current total capacitance capacity reaches the preset reference capacitance or not;
and when the current total capacitance capacity reaches the preset reference capacitance, generating a liquid level detection result that the dish-washing machine reaches the preset water inflow requirement of the dish-washing machine.
3. The method of claim 2, wherein after the current total capacitance capacity reaches the preset reference capacitance, the method further comprises:
judging whether the current total capacitance capacity exceeds the preset reference capacitance or not;
and when the current total capacitance capacity exceeds the preset reference capacitance, generating a liquid level detection result of the dishwasher when the dishwasher overflows.
4. The method of claim 3, wherein the maximum capacitance of the second capacitive liquid level detection device is greater than the preset reference capacitance, and wherein the minimum capacitance of the first capacitive liquid level detection device and the minimum capacitance of the second capacitive liquid level detection device are both less than the preset reference capacitance.
5. The method of claim 4, wherein the determining whether the current total capacitance reaches the preset reference capacitance comprises:
acquiring the charging time of the first capacitive liquid level detection device and the second capacitive liquid level detection device to the preset voltage;
judging whether the charging time reaches a preset charging time corresponding to the preset reference capacitor;
and when the charging time reaches the preset charging time corresponding to the preset reference capacitor, determining that the current total capacitor capacity reaches the preset reference capacitor.
6. The method of claim 5, wherein the determining whether the current total capacitance capacity exceeds the preset reference capacitance comprises:
judging whether the charging time length exceeds a preset charging time length corresponding to the preset reference capacitor;
when the charging time length exceeds a preset charging time length corresponding to the preset reference capacitor, judging whether the charging time length exceeds a preset multiple of the preset charging time length;
and when the charging time length exceeds a preset multiple of the preset charging time length, determining that the current total capacitance capacity exceeds the preset reference capacitance.
7. The method of claim 5, wherein a level detection result of an overflow of the dishwasher is generated when the first capacitive level detection device and the second capacitive level detection device cannot be charged to the preset voltage.
8. The utility model provides a dish washer liquid level detection device, its characterized in that, be provided with first capacitanc liquid level detection equipment in the inner bag of dish washer, the casing bottom of dish washer is provided with second capacitanc liquid level detection equipment, first capacitanc liquid level detection equipment's maximum capacitance is for predetermineeing reference capacitance, predetermine reference capacitance for when water in the inner bag reaches dish washer and predetermines the inflow requirement, the capacitance value that first capacitanc liquid level detection equipment corresponds, still include in the dish washer: the charging module is respectively connected with the first capacitive liquid level detection device and the second capacitive liquid level detection device and respectively charges the first capacitive liquid level detection device and the second capacitive liquid level detection device according to a preset voltage; the device comprises:
the acquisition module is used for acquiring the total capacitance capacity of the first capacitive liquid level detection device and the second capacitive liquid level detection device after charging is finished;
a processing module, configured to determine a liquid level detection result of the dishwasher based on a relationship between a total capacitance capacity of the first capacitive liquid level detection device and the second capacitive liquid level detection device and the preset reference capacitance, where the liquid level detection result includes: a water inflow detection result and an overflow detection result.
9. A dishwasher level detection apparatus, comprising:
the first capacitance type liquid level detection device is arranged in an inner container of the dish washing machine, the maximum capacitance of the first capacitance type liquid level detection device is a preset reference capacitance, and the preset reference capacitance is a capacitance value corresponding to the first capacitance type liquid level detection device when water in the inner container meets the preset water inflow requirement of the dish washing machine;
the second capacitance type liquid level detection device is arranged at the bottom of the shell of the dishwasher;
the charging module is respectively connected with the first capacitive liquid level detection device and the second capacitive liquid level detection device and respectively charges the first capacitive liquid level detection device and the second capacitive liquid level detection device according to a preset voltage;
respectively with first capacitanc liquid level detection equipment with the control module that second capacitanc liquid level detection equipment is connected, control module includes:
a processor and a memory communicatively coupled to the processor, the memory having stored therein computer instructions, the processor executing the computer instructions to perform the method of any of claims 1-7.
10. A computer-readable storage medium having stored thereon computer instructions for causing a computer to perform the method of any one of claims 1-7.
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