Water level detection device, steam equipment and water level detection method

Abstract

The invention discloses a water level detection device, steam equipment and a water level detection method. The device comprises a first chip and a water level detection circuit. The first chip comprises a water level detection interface connected with a power supply; the water level detection circuit comprises a first line, a second line, a first conductive piece and a second conductive piece, a capacitor is arranged in at least one of the first line and the second line, the two ends of the first line are connected with the water level detection interface and the first conductive piece respectively, and the two ends of the second line are connected with the grounding end and the second conductive piece respectively; when the water level in the steam generating device reaches a preset water level, the two are in contact with water to be electrically connected; the first chip performs water level detection based on the electrical parameters collected by the water level detection interface to obtain a water level detection result, and the water level detection result comprises whether the water level in the steam generation device reaches a preset water level or not. The problem that misjudgment is easily caused by power grid interference when the water level is detected by detecting the on-off of the charging loop can be avoided, and the accuracy of water level detection is high.

Description

Technical Field

[0001] The present application belongs to the technical field of steam equipment, and in particular relates to a water level detection device, steam equipment and a water level detection method. Background Art

[0002] The steam station consists of some sensors, boilers, water pumps, ironing heads, solenoid valves and connecting parts. It is an ironing device that maintains the water vapor pressure of the boiler and sprays the water vapor through the solenoid valve. The boiler of the steam station is a closed heating component, and its water level control is crucial to the steam performance of the steam station. Therefore, how to accurately detect the water level in the boiler during the operation of the boiler is the key to achieving water level control. Summary of the invention

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a water level detection device, a steam device and a water level detection method, which can avoid the problem of being easily misjudged due to interference from the power grid when detecting the on-off state of the charging circuit, and the accuracy of water level detection is high.

[0004] In a first aspect, the present application provides a water level detection device, which is used to detect the water level in a steam generating device of a steam device, and the water level detection device includes:

[0005] A first chip, wherein the first chip comprises a water level detection interface, and the water level detection interface is connected to a power supply of a preset voltage;

[0006] A water level detection circuit, the water level detection circuit comprising a first circuit, a second circuit, a first conductive member and a second conductive member, at least one of the first circuit and the second circuit is provided with a capacitor, two ends of the first circuit are respectively connected to the water level detection interface and the first conductive member, and two ends of the second circuit are respectively connected to a ground terminal and the second conductive member; wherein the first conductive member and the second conductive member are provided in the steam generating device, and when the water level in the steam generating device reaches a preset water level, the first conductive member and the second conductive member are both in contact with water to be electrically connected;

[0007] The first chip performs water level detection based on the electrical parameters collected by the water level detection interface to obtain a water level detection result, and the water level detection result includes whether the water level in the steam generating device reaches a preset water level.

[0008] In a second aspect, the present application provides a steam device, comprising a steam generating device and a water level detecting device as described in any one of the above embodiments, wherein the steam generating device is used to generate steam.

[0009] In a third aspect, the present application provides a water level detection method, which is applied to the water level detection device, the water level detection device is used to detect the water level in the steam generating device of the steam equipment, and the water level detection device includes a first chip and a water level detection circuit;

[0010] The first chip includes a water level detection interface, and the water level detection interface is connected to a power supply of a preset voltage; the water level detection circuit includes a first circuit, a second circuit, a first conductive member, and a second conductive member, at least one of the first circuit and the second circuit is provided with a capacitor, two ends of the first circuit are respectively connected to the water level detection interface and the first conductive member, and two ends of the second circuit are respectively connected to a ground terminal and the second conductive member; wherein the first conductive member and the second conductive member are arranged in the steam generating device, and when the water level in the steam generating device reaches a preset water level, the first conductive member and the second conductive member are both in contact with water to be electrically connected; the method includes:

[0011] Acquiring electrical parameters collected by the water level detection interface;

[0012] Based on the electrical parameters collected by the water level detection interface, water level detection is performed to obtain a water level detection result, and the water level detection result includes whether the water level in the steam generating device reaches a preset water level.

[0013] The water level detection device, steam equipment and water level detection method provided in the embodiments of the present application form a charging circuit by setting a water level detection circuit with a capacitor when the water level submerges two single plugs, and detect the electrical parameters when the power supply charges the capacitor through the water level detection interface of the chip to perform water level detection. When charging, the change of electrical parameters is not an instantaneous value. Even if the power grid fluctuates, the power of the capacitor gradually increases. The water level detection interface can accurately detect the gradual increase of the electrical parameters (such as voltage) of the capacitor, thereby achieving accurate water level detection, thereby avoiding the problem of being easily misjudged due to interference from the power grid when detecting the water level by detecting the on and off of the charging circuit, and the accuracy of water level detection is high.

[0014] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0016] Figure 1 This is an application scenario diagram of the water level detection device provided in an embodiment of the present application;

[0017] Figure 2is a schematic structural diagram of a water level detection device provided in an embodiment of the present application;

[0018] Figure 3 is a schematic diagram of the principle of a water level detection device provided in an embodiment of the present application;

[0019] Figure 4 It is a flow chart of the water level detection method provided in the embodiment of the present application;

[0020] Figure 5 It is a module schematic diagram of the detection device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0021] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of the present application, and cannot be understood as limiting the embodiments of the present application.

[0022] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one feature. In the description of this application, the meaning of "plurality" is at least two, such as two, three, unless otherwise clearly and specifically defined.

[0024] See also Figure 1 , Figure 1 1 is an application scenario diagram of a water level detection method provided in an embodiment of the present application. The application scenario provided in the present application includes a steam device 100.

[0025] The steam device 100 may be an electrical appliance for generating steam, including but not limited to a steam hanging iron, a steam iron, a steam mop, a steam cleaning machine, a steam oven, and the like.

[0026] Take the Garment Steamer as an example. The Garment Steamer is a household appliance that removes wrinkles from clothes by generating high-temperature steam, while also sterilizing and deodorizing. Compared with traditional irons, the Garment Steamer is easier to operate and causes less damage to clothes. It is particularly suitable for quickly processing various types of clothes. The following is a detailed introduction to the Garment Steamer:

[0027] (1) Working principle:

[0028] Water tank: The user adds clean water to the water tank of the garment steamer. Heating system: The water in the water tank is heated to boiling, generating high-temperature steam. Steam nozzle (steam head): The generated steam is transported to the nozzle of the handheld part through a hose. Steam jet: The user sprays high-temperature steam directly onto the clothes through the nozzle, using the heat and humidity of the steam to soften the clothing fibers and remove wrinkles.

[0029] (2) Main features:

[0030] Easy to operate: You don't need to lay the clothes flat like traditional irons, you can hang them directly on the hanger for ironing. Wide range of applications: Suitable for a variety of fabrics, including cotton, linen, silk, wool, etc. High-efficiency wrinkle removal: High-temperature steam can quickly remove wrinkles on clothes. Sterilization and deodorization: High-temperature steam has the effect of sterilization and deodorization, which can clean clothes. Compact size: Easy to store and carry, suitable for home use or travel.

[0031] (3) Usage:

[0032] Add water: Open the water tank cap and add an appropriate amount of clean water, being careful not to exceed the maximum water level. Preheat: Plug in the power supply, turn on the switch, and wait a few minutes for the machine to preheat. Adjust the settings: Choose the appropriate amount of steam and temperature according to the material of the clothes. Hang the clothes: Hang the clothes on the hanger and make sure the clothes are flat. Start ironing: Hold the nozzle and spray steam evenly from top to bottom, moving the nozzle to cover the entire surface of the clothes. Turn off and clean: After ironing, turn off the power supply, wait for the machine to cool down, pour out the remaining water, and clean the nozzle and water tank.

[0033] The steam device 100 includes a steam generating device 10. The steam generating device 10 is used to generate steam. For example, the steam generating device 10 can be a boiler, in which a proper amount of water is placed, and the boiler is heated to generate steam.

[0034] The steam generating device 10 includes a body 11 and a water supply valve 12. The water supply valve 12 is disposed on the body 11 (such as a boiler body), and is used to control the amount of water flowing into the body 11.

[0035] Optionally, the opening of the water supply valve 12 can vary within a preset opening range, such as the water supply valve 12 is a solenoid valve, an electronic expansion valve, etc. The larger the opening of the water supply valve 12, the greater the amount of water flowing into the body 11 through the water supply valve 12.

[0036] Optionally, the water replenishment valve 12 can be switched between an open state and a closed state.

[0037] In some embodiments, the steam device 100 further includes a water tank 20 and a water pump 30. The water tank 20, the water pump 30 and the water supply valve 12 are connected in sequence. The water tank 20 is used to store water, and the water pump 30 is used to pump water to transport the water in the water tank 20 to the water supply valve 12. When the water supply valve 12 is opened, the water can be transported to the body 11.

[0038] In some embodiments, the steam device 100 further includes a temperature detection device 40. The temperature detection device 40 is used to detect the temperature of the body 11, such as detecting the bottom wall temperature and the side wall temperature of the body 11.

[0039] Optionally, the temperature detection device 40 may be a NTC (Negative Temperature Coefficient) thermistor, an infrared temperature measuring device, or the like.

[0040] Among them, the working principle of NTC thermistor is based on the characteristics of semiconductor materials. Common NTC thermistor materials include metal oxides such as manganese, cobalt, nickel, and iron. The resistivity of these materials decreases as the temperature increases. By detecting the resistance value of the NTC thermistor, the real-time temperature can be detected.

[0041] Among them, infrared temperature sensors are non-contact temperature measuring devices that determine the surface temperature of an object by detecting the infrared radiation emitted by the object, such as by detecting the infrared radiation emitted by the body 11 to determine the temperature of the bottom wall and side walls of the body.

[0042] In some embodiments, the steam device 100 also includes an ironing head 50 and a steam valve 60. The ironing head 50, the steam valve 60 and the output port of the steam generating device 10 are connected in sequence. The ironing head 50 heats the water vapor output by the steam generating device 10 and outputs steam. The steam valve 60 is used to control the on and off of the steam generating device 10 and the ironing head 50.

[0043] The steam generated by the steam generating device 10 may be mixed with water, that is, a water-steam mixture is generated. In the steam device 100, generally, only steam needs to be ejected in the end, so the water-steam mixture needs to be heated again so that the ironing head 50 can finally output steam.

[0044] The iron head 50 can flexibly control the timing of steam spraying through the steam valve 60, so that steam can be sprayed when needed, thereby improving the flexibility of steam control.

[0045] In some embodiments, the steam generating device 10 further includes a heating device 70. The heating device 70 can heat the body 11, so that the water in the body 11 boils and generates steam. For example, the heating device 70 can be a resistance heating device 70.

[0046] Optionally, when the temperature of the main body 11 is low and not conducive to generating steam, the heating device 70 will work to heat, and when the temperature of the main body 11 is high and there is a risk of overheating, it will stop working, so that the temperature inside the main body 11 can quickly generate steam while avoiding overheating problems.

[0047] In some embodiments, a water level detection device 80 (such as a water level gauge) may also be provided in the body 11, and the water level detection device 80 is used to detect whether the real-time water level has reached a preset water level. If the water level detection device 80 is provided at the first water level (such as a high water level) position of the body 11, it is possible to detect whether the real-time water level has reached a high water level. Alternatively, if the water level detection device 80 is provided at the second water level (such as a low water level, the second water level is lower than the first water level, such as the first water level is 50% water level and the second water level is 10% water level) position of the body 11, it is possible to detect whether the real-time water level has reached a low water level.

[0048] Alternatively, the water level detection device 80 may include multiple ones, which are respectively set at the high water level and the low water level, so that it can detect whether the real-time water level in the main body 11 is less than the low water level or higher than the high water level, thereby assisting the water replenishment control strategy in making decisions. For example, when the real-time water level is greater than the first water level, the water replenishment valve 12 is controlled to be closed, that is, when the water level is too high, water replenishment is stopped to avoid excessive water volume and reduce the steam generation speed; and / or when the real-time water level is less than the second water level, the water replenishment valve 12 is controlled to be opened, and when the water volume is too low, water replenishment is required to avoid dry burning and damage to the steam generating device 10.

[0049] Optionally, the water level detection device 80 includes but is not limited to a conductive probe, a float switch, or the like, which forms a conductive circuit when the water level reaches a preset water level.

[0050] For example, the conductive probe determines the water level by detecting the conductivity of water. When the water level reaches the probe position, the circuit is closed and an electrical signal is generated. Its structure is simple and the cost is low.

[0051] For another example, a float switch uses a float ball to trigger a switch as the water level rises or falls. When the water level reaches a preset height, the change in the position of the float ball triggers a mechanical switch, thereby generating an electrical signal.

[0052] Based on the introduction of the above-mentioned related scenarios, an embodiment of the present application provides a water level detection device 80, which is used to detect the water level in the steam generating device 10 of the steam equipment 100. The water level detection device 80 includes a first chip 81 and a water level detection circuit 82. The first chip 81 includes a water level detection interface 811, and the water level detection interface 811 is connected to a power supply 83 of a preset voltage; the water level detection circuit 82 includes a first circuit 821, a second circuit 822, a first conductive member 823, and a second conductive member 824. A capacitor is provided in at least one of the first circuit 821 and the second circuit 822. The two ends of the first circuit 821 are respectively connected to the water level detection interface 811 and the first conductive member 823, and the two ends of the second circuit 822 are respectively connected to the ground terminal and the second conductive member 824; wherein the first conductive member 823 and the second conductive member 824 are arranged in the steam generating device 10. When the water level in the steam generating device 10 reaches the preset water level, the first conductive member 823 and the second conductive member 824 are both in contact with water to be electrically connected;

[0053] The first chip 81 performs water level detection based on the electrical parameters collected by the water level detection interface 811 to obtain a water level detection result. The water level detection result includes whether the water level in the steam generating device 10 reaches a preset water level.

[0054] The water level detection device 80 provided in the embodiment of the present application is provided with a water level detection circuit 82 with a capacitor. When the water level submerges two single plugs, a charging circuit is formed. The water level detection interface 811 of the chip detects the electrical parameters when the power supply 83 charges the capacitor to detect the water level. When charging, the change of the electrical parameters is not an instantaneous value. Even if the power grid fluctuates, the power of the capacitor gradually increases. The water level detection interface 811 can accurately detect the gradual increase of the electrical parameters (such as voltage) of the capacitor, thereby achieving accurate water level detection, thereby avoiding the problem of being easily misjudged due to interference from the power grid when detecting the water level by only detecting the on-off of the charging circuit. The accuracy of water level detection is high.

[0055] Please combine Figure 1 and Figure 2 The water level detection device 80 provided in the embodiment of the present application includes a first chip 81 and a water level detection circuit 82, and the first chip 81 is connected to the water level detection circuit 82. The water level detection device 80 is described in detail below.

[0056] Optionally, the first chip 81 may be a microcontroller unit (MCU). The first chip 81 is used to collect electrical parameters related to water level detection and perform water level detection based on the electrical parameters.

[0057] The first chip 81 is provided with a plurality of interfaces, which specifically include a water level detection interface 811 for collecting electrical parameters.

[0058] Optionally, the water level detection interface 811 can work in an input mode, in which the water level detection interface 811 can collect electrical parameters of the connected power supply 83. Alternatively, the water level detection interface 811 can work in an output mode to output a low level.

[0059] The water level detection interface 811 is connected to a power supply 83 of a preset voltage. The water level detection interface 811 is connected to the line between the power supply 83 and the water level detection circuit 82. When the water level detection interface 811 is in input mode, the water level detection interface 811 can collect electrical parameters of the connection end, thereby collecting and obtaining electrical parameters when the power supply 83 charges the water level detection circuit 82.

[0060] Optionally, the water level detection interface 811 is connected to a power supply 83 of a preset voltage through a second resistor 827. In this way, the power supply 83 can be prevented from being directly connected to the water level detection interface 811 to protect the first chip 81, and the water level detection interface 811 can collect electrical parameters at the connection end between the second resistor 827 and the water level detection circuit 82.

[0061] Optionally, the electrical parameter includes at least one of voltage and current.

[0062] Please continue reading Figure 2 In some embodiments, the control component of the steam device 100 includes a first chip 81 , a second chip 91 and a third chip 92 .

[0063] Among them, the first chip 81 is used for water level detection. The second chip 91 is used as the main control to control and coordinate the various functional components of the steam device 100, such as controlling the water pump to control water replenishment, realize the heating control of the steam generating device 10, realize the heating control of the iron head, etc. The third chip 92 is located at the iron head and is connected to the second chip 91 for communication. It is responsible for steam mode selection and equipment related information display, steam button (such as controlling the opening and closing of the steam valve), and detecting the temperature of the iron head.

[0064] Optionally, the multiple interfaces may also include a water level output interface 812, which is connected to the second chip 91 of the steam device 100. After obtaining the water level detection result, the first chip 81 will send it to the second chip 91 through the water level output interface 812. The second chip 91 implements water replenishment control based on the water level detection result.

[0065] For example, the first chip 81 is also used to output a preset signal to the second chip 91 through the water level output interface 812 when the water level detection result shows that the water level in the steam generating device 10 reaches the preset water level, and the preset signal indicates that the water level in the steam generating device 10 reaches the preset water level.

[0066] When the preset water level is a high water level, the second chip 91 can control the water pump to stop working and close the water replenishment valve, thereby stopping water replenishment, so as to avoid the water level in the steam generating device 10 being too high and affecting the steam generation speed. And / or, when the preset water level is a low water level, the second chip 91 can control the water pump to start working and open the water replenishment valve, thereby starting water replenishment, so as to avoid the water level in the steam generating device 10 being too low, failing to generate enough steam, or even being damaged due to dry burning.

[0067] Optionally, the multiple interfaces may further include a ground interface 813, and the ground interface 813 is connected to a ground terminal.

[0068] Optionally, in order to meet safety regulations and improve the safety of the water level detection device 80 , the grounding interface 813 may be connected to the ground terminal via the second capacitor 814 .

[0069] The water level detection circuit 82 includes a first circuit 821 , a second circuit 822 , a first conductive member 823 and a second conductive member 824 .

[0070] At least one of the first circuit 821 and the second circuit 822 is provided with a capacitor, two ends of the first circuit 821 are respectively connected to the water level detection interface 811 and the first conductive member 823 , and two ends of the second circuit 822 are respectively connected to the ground terminal and the second conductive member 824 .

[0071] The first conductive member 823 and the second conductive member 824 are disposed in the steam generating device 10 . When the water level in the steam generating device 10 reaches a preset water level, the first conductive member 823 and the second conductive member 824 both contact water to be electrically connected.

[0072] When the water level in the steam generating device 10 reaches a preset water level, the first conductive member 823 and the second conductive member 824 are both in contact with water to be electrically connected, and the water level detection circuit 82 forms a conductive loop from the power supply 83 to the ground terminal. At this time, the power supply 83 will charge the capacitor provided in at least one of the first circuit 821 and the second circuit 822. At this time, the water level detection interface 811 can collect the voltage between the capacitors. As the charging progresses, the charge of the capacitor gradually increases, and the voltage collected by the water level detection interface 811 also gradually increases, or the current collected by the water level detection interface 811 gradually decreases.

[0073] Optionally, the first circuit 821 includes a first resistor 825 and a first capacitor 826, and the water level detection interface 811, the first resistor 825, the first capacitor 826 and the first conductive member 823 are connected in sequence.

[0074] When the water level in the steam generating device 10 reaches a preset water level, the first conductive member 823 and the second conductive member 824 both contact the water to be electrically connected, and the water level detection circuit 82 forms a conductive loop from the power supply 83 to the ground terminal.

[0075] Among them, the power supply 83, the water level detection interface 811, the first resistor 825, the first capacitor 826, the first conductive member 823, the second conductive member 824 and the ground terminal are sequentially connected to form a conductive loop, and the water level detection interface 811 can collect the electrical parameters of one end of the first resistor 825 to realize the collection of the electrical parameters of the first capacitor 826. The first resistor 825 is used to avoid the capacitor of the power supply 83 from being directly connected to the water level detection interface 811, and the protection of the first chip 81 is realized under the premise of realizing the collection of the electrical parameters of the capacitor.

[0076] Optionally, the first chip 81 may determine whether the power supply 83 is charging the capacitor based on changes in electrical parameters collected by the water level detection interface 811, thereby achieving water level detection.

[0077] For example, when the waveform of the electrical parameters matches the charging waveform, the water level detection result is that the water level in the steam generating device 10 reaches the preset water level; when the waveform of the electrical parameters does not match the charging waveform, the water level detection result is that the water level in the steam generating device 10 does not reach the preset water level.

[0078] Taking the electrical parameter as voltage as an example, as charging proceeds, the voltage will gradually increase, so the waveform of the electrical parameter is an increasing waveform. When the waveform of the voltage matches the charging waveform, it can be determined that the capacitor is charging, and at this time it can be determined that the water level has reached the preset water level, making the water level detection circuit 82 turned on. When the waveform of the voltage does not match the charging waveform, it can be determined that the capacitor is not charging, and at this time it can be determined that the water level has not reached the preset water level, and the water level detection circuit 82 is disconnected.

[0079] Optionally, the charging waveform may be a pre-calibrated waveform; or, the charging waveform may be a waveform that meets a preset condition, such as a waveform that increases arbitrarily over time.

[0080] It can be understood that since the water level detection interface 811 is connected to the power supply 83 , when the water level detection circuit 82 is disconnected, the voltage of the water level detection interface 811 will be pulled up to the same as the preset voltage of the power supply 83 .

[0081] Optionally, when the voltage collected by the water level detection interface 811 within a predetermined time period (such as 1 second (s), 2s, etc.) is always a preset voltage, it can be determined that the voltage waveform does not match the charging waveform.

[0082] In some embodiments, the waveform of the electrical parameter includes waveforms of multiple electrical parameters respectively collected in multiple detection cycles within a preset time length. Among the multiple electrical parameter waveforms, when the proportion of the number of target waveforms to the total number of waveforms is greater than a preset proportion, it is determined that the waveform of the electrical parameter matches the charging waveform, and the target waveform is the waveform of the electrical parameter that matches the charging waveform.

[0083] Specifically, in order to improve the accuracy and stability of charging detection, the first capacitor 826 may be charged multiple times, and then the electrical parameters during each charging are collected.

[0084] Compared with only detecting the waveform of the electrical parameters during the charging process once, the collected electrical parameters may be abnormal due to power grid fluctuations, causing the waveform of the electrical parameters to not match the charging waveform, thus causing false detection. By respectively collecting waveforms of multiple electrical parameters in multiple detection cycles within a preset time, the ratio of the number of target waveforms to the total number of waveforms is used to determine whether the waveform of the electrical parameters matches the charging waveform, which can avoid the risk of false detection caused by the abnormal waveform of a single electrical parameter, thereby improving the accuracy and stability of charging detection, and further improving the accuracy and stability of water level detection.

[0085] In some embodiments, in the waveform of the electrical parameter, when the electrical parameter increases over time, the waveform of the electrical parameter is determined to match the charging waveform; or, in the waveform of the electrical parameter, when the electrical parameter increases over time and the difference between the first electrical parameter and the last electrical parameter is greater than a preset difference, the waveform of the electrical parameter is determined to match the charging waveform.

[0086] Specifically, taking the electrical parameter as voltage as an example, in order to reduce the amount of calculation for waveform matching, in the waveform of each electrical parameter, when the electrical parameter increases over time, it can be determined that the waveform of the electrical parameter matches the charging waveform, and when the electrical parameter does not increase over time, it can be determined that the waveform of the electrical parameter does not match the charging waveform.

[0087] Alternatively, in order to further improve the accuracy of charging detection and avoid the situation where the electrical parameters increase over time, but the increment (such as the maximum voltage difference) does not match the increment of the electrical parameters when the capacitor is fully charged, therefore, in addition to judging whether the electrical parameters increase, it is also necessary to judge whether the difference between the first electrical parameter and the last electrical parameter is greater than the preset difference, so as to comprehensively judge whether the waveform of the electrical parameters matches the charging waveform.

[0088] In the waveform of the electrical parameter, if the electrical parameter increases with time and the difference between the first electrical parameter and the last electrical parameter is greater than or equal to the preset difference, it is determined that the waveform of the electrical parameter matches the charging waveform. In the waveform of the electrical parameter, if the electrical parameter does not increase with time or the difference between the first electrical parameter and the last electrical parameter is less than the preset difference, it is determined that the waveform of the electrical parameter does not match the charging waveform.

[0089] Optionally, when judging whether the waveform of a single electrical parameter matches the charging waveform, image matching can be performed based on the collected waveform of the electrical parameter and the charging waveform. When the waveform similarity between the two is greater than or equal to a preset similarity, it can be determined that the waveform of the electrical parameter matches the charging waveform. Conversely, when the waveform similarity between the two is less than a preset similarity, it can be determined that the waveform of the electrical parameter does not match the charging waveform.

[0090] See also Figure 2 and Figure 3 In some embodiments, the detection cycle of the water level detection interface 811 includes a detection window T1 and a non-detection window T2. In the detection window T1, the water level detection interface 811 collects electrical parameters, and in the non-detection window T2, the water level detection interface 811 outputs a low level.

[0091] Specifically, to realize multiple charging of the capacitor, it is necessary to discharge the capacitor. When the water level reaches the preset water level, since the first capacitor 826 is grounded, the power supply 83 only needs to stop charging the first capacitor 826, and the first capacitor 826 can discharge itself to the ground terminal. When the first capacitor 826 is discharged (such as the power is reduced to 0), it is connected to the power supply 83 again to charge the first capacitor 826, thereby realizing multiple charging of the first capacitor 826.

[0092] The first chip 81 can control the water level detection interface 811 based on a detection cycle, where the detection cycle is divided into a detection window T1 for charging and a non-detection window T2 for discharging.

[0093] In the detection window T1, the first chip 81 controls the water level detection interface 811 to work in the input mode, and when the water level reaches the preset water level, the power supply 83 can charge the first capacitor 826. In the case of the non-detection window T2, the first chip 81 can control the water level detection interface 811 to output a low level, and the power supply 83 no longer charges the first capacitor 826. When the water level reaches the preset water level, the first capacitor 826 can be discharged through the ground terminal and the water level detection interface 811; when the water level does not reach the preset water level, the first capacitor 826 can be discharged through the water level detection interface 811.

[0094] Among them, the durations of the detection window T1 and the non-detection window T2 are both empirical values. The detection window T1 is greater than the time required for the first capacitor 826 to be fully charged by the power supply 83 to ensure that a complete waveform of the electrical parameters is obtained. The non-detection window T2 is greater than the time required for the first capacitor 826 to be discharged to zero power to ensure that the discharge is complete.

[0095] Optionally, the detection windows T1 and non-detection windows T2 of multiple consecutive detection cycles are alternately distributed. In this way, charging and discharging can be alternately performed in multiple consecutive detection cycles, thereby acquiring waveforms of electrical parameters during multiple charging cycles.

[0096] See also Figure 2 and Figure 4 The water level detection method of the embodiment of the present application can be implemented by steps 011 and 012, which are described in detail below.

[0097] Step 011: Obtaining electrical parameters collected by the water level detection interface 811;

[0098] Step 012: Based on the electrical parameters collected by the water level detection interface 811, water level detection is performed to obtain a water level detection result. The water level detection result includes whether the water level in the steam generating device 10 reaches a preset water level.

[0099] For the detailed description of step 011 and step 012, please refer to the various implementation methods of water level detection by the water level detection device 80 mentioned above, which will not be repeated here.

[0100] In some embodiments, step 012: performing water level detection based on the electrical parameters collected by the water level detection interface 811 to obtain a water level detection result includes:

[0101] Step 0121: When the waveform of the electrical parameter matches the charging waveform, the water level detection result is that the water level in the steam generating device 10 reaches a preset water level;

[0102] Step 0122: When the waveform of the electrical parameter does not match the charging waveform, the water level detection result is that the water level in the steam generating device 10 does not reach the preset water level.

[0103] In some embodiments, the waveform of the electrical parameter includes periodic waveforms of multiple electrical parameters respectively collected in multiple detection cycles within a preset time length, and the method further includes:

[0104] Step 013: When the number of target waveforms in the waveforms of multiple electrical parameters accounts for a greater proportion than a preset ratio of the total number of waveforms, it is determined that the waveform of the electrical parameter matches the charging waveform, and the target waveform is the waveform of the electrical parameter that matches the charging waveform.

[0105] In some embodiments, the water level detection method further comprises:

[0106] Step 014: In the waveform of the electrical parameter, when the electrical parameter increases with time, determining that the waveform of the electrical parameter matches the charging waveform;

[0107] Alternatively, in the waveform of the electrical parameter, when the electrical parameter increases over time and the difference between the first electrical parameter and the last electrical parameter is greater than a preset difference, it is determined that the waveform of the electrical parameter matches the charging waveform.

[0108] In some embodiments, the detection cycle of the water level detection interface 811 includes a detection window and a non-detection window, and the method further includes:

[0109] Step 015: In the detection window, the water level detection interface 811 is controlled to collect electrical parameters, and in the non-detection window, the water level detection interface 811 is controlled to output a low level.

[0110] According to the method described in the above embodiment, the present application embodiment also provides a detection device 300 for executing the steps in the above water level detection method. Figure 5 , Figure 5 : is a schematic diagram of a module of a detection device 300 provided in an embodiment of the present application. The detection device 300 comprises:

[0111] An acquisition module 301 is used to acquire electrical parameters collected by the water level detection interface 811;

[0112] The water level detection module 302 is used to perform water level detection based on the electrical parameters collected by the water level detection interface 811 to obtain a water level detection result. The water level detection result includes whether the water level in the steam generating device 10 reaches a preset water level.

[0113] It should be noted that the specific details of each module unit in the above-mentioned detection device have been described in detail in the embodiment of the above-mentioned water level detection method, and will not be repeated here.

[0114] In the embodiments of the present application, the term "module" or "unit" refers to a computer program or a part of a computer program with a predetermined function, and works together with other related parts to achieve a predetermined goal, and can be implemented in whole or in part by using software, hardware (such as processing circuits or memories) or a combination thereof. Similarly, a processor (or multiple processors or memories) can be used to implement one or more modules or units. In addition, each module or unit can be part of an overall module or unit that includes the function of the module or unit.

[0115] In some embodiments, the detection device in the embodiments of the present application can be implemented in hardware, such as an electronic device, or a component in an electronic device, such as an integrated circuit or a chip; the detection device can also be implemented in software, such as as an application installed in an electronic device.

[0116] An embodiment of the present application also provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the various processes of the embodiment of the above-mentioned water level detection method are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0117] The processor may be the processor in the steam device 100 in the above embodiment. The computer readable storage medium may be a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk.

[0118] Computer readable media may include computer storage media and communication media. Computer storage media include volatile and non-volatile, removable and non-removable media implemented by any method or technology for storing information such as computer readable instructions, data structures, program modules or other data. Computer storage media include RAM, ROM, Erasable Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), flash memory or other solid-state memory technology, CD-ROM, Digital Versatile Disc (DVD) or other optical storage, cassettes, magnetic tapes, disk storage or other magnetic storage devices. Of course, those skilled in the art will know that computer storage media are not limited to the above.

[0119] The embodiment of the present application also provides a computer program product, including a computer program, which implements the above-mentioned water level detection method when executed by a processor. The processor may be a processor in the steam device 100 in the above-mentioned embodiment. When the computer program is executed by the processor, each process of the embodiment of the above-mentioned water level detection method is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0120] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0121] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0122] It is understandable that in the specific implementation of this application, data related to user identity or characteristics is involved. When the above embodiments of this application are applied to specific products or technologies, user permission or consent is required, and the collection, use and processing of relevant data need to comply with relevant laws, regulations and standards of relevant countries and regions.

[0123] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A water level detection device, characterized in that: The water level detection device is used to detect the water level in the steam generating device of the steam equipment, and the water level detection device comprises: A first chip, wherein the first chip comprises a water level detection interface, and the water level detection interface is connected to a power supply of a preset voltage; A water level detection circuit, the water level detection circuit comprising a first circuit, a second circuit, a first conductive member and a second conductive member, at least one of the first circuit and the second circuit is provided with a capacitor, two ends of the first circuit are respectively connected to the water level detection interface and the first conductive member, and two ends of the second circuit are respectively connected to a ground terminal and the second conductive member; wherein the first conductive member and the second conductive member are provided in the steam generating device, and when the water level in the steam generating device reaches a preset water level, the first conductive member and the second conductive member are both in contact with water to be electrically connected; The first chip performs water level detection based on the electrical parameters collected by the water level detection interface to obtain a water level detection result, and the water level detection result includes whether the water level in the steam generating device reaches a preset water level.

2. The water level detection device according to claim 1, characterized in that: The first circuit includes a first resistor and a first capacitor, and the water level detection interface, the first resistor, the first capacitor and the first conductive member are connected in sequence.

3. The water level detection device according to any one of claims 1 and 2, characterized in that: The electrical parameter includes at least one of voltage and current; In the case where the waveform of the electrical parameter matches the charging waveform, the water level detection result is that the water level in the steam generating device reaches a preset water level; In the case where the waveform of the electrical parameter does not match the charging waveform, the water level detection result is that the water level in the steam generating device does not reach the preset water level.

4. The water level detection device according to claim 3, characterized in that: The waveform of the electrical parameter includes waveforms of multiple electrical parameters respectively collected in multiple detection cycles within a preset time length. Among the multiple waveforms of the electrical parameters, when the proportion of the number of target waveforms to the total number of waveforms is greater than a preset proportion, it is determined that the waveform of the electrical parameter matches the charging waveform, and the target waveform is the waveform of the electrical parameter that matches the charging waveform.

5. The water level detection device according to any one of claims 3 and 4, characterized in that: In the waveform of the electrical parameter, when the electrical parameter increases over time, it is determined that the waveform of the electrical parameter matches the charging waveform; or, in the waveform of the electrical parameter, when the electrical parameter increases over time and the difference between the first electrical parameter and the last electrical parameter is greater than a preset difference, it is determined that the waveform of the electrical parameter matches the charging waveform.

6. The water level detection device according to any one of claims 3 to 5, characterized in that: The detection cycle of the water level detection interface includes a detection window and a non-detection window. In the detection window, the water level detection interface collects the electrical parameters. In the non-detection window, the water level detection interface outputs a low level.

7. The water level detection device according to claim 6, characterized in that: The detection windows and the non-detection windows of a plurality of consecutive detection cycles are alternately distributed.

8. The water level detection device according to claim 1, characterized in that: The first chip also includes a water level output interface, which is connected to the second chip of the steam device. The first chip is also used to output a preset signal to the second chip through the water level output interface when the water level detection result shows that the water level in the steam generating device has reached a preset water level. The preset signal indicates that the water level in the steam generating device has reached a preset water level.

9. The water level detection device according to claim 1, characterized in that: The first chip also includes a grounding interface, and the grounding interface is connected to a ground terminal through a second capacitor.

10. The water level detection device according to claim 1, characterized in that: The water level detection interface is connected to the power supply through a second resistor.

11. A steam device, characterized in that: include: A steam generating device, wherein the steam generating device is used to generate steam; The water level detection device according to any one of claims 1 to 10 is used to detect the water level in the steam generating device.

12. The steam device according to claim 11, characterized in that Also includes: The second chip is used to control the steam generating device to stop replenishing water when the water level in the steam generating device reaches a preset water level.

13. A water level detection method, characterized in that: Applied to the water level detection device, the water level detection device is used to detect the water level in the steam generating device of the steam equipment, the water level detection device comprises a first chip and a water level detection circuit; The first chip includes a water level detection interface, and the water level detection interface is connected to a power supply of a preset voltage; the water level detection circuit includes a first circuit, a second circuit, a first conductive member, and a second conductive member, at least one of the first circuit and the second circuit is provided with a capacitor, two ends of the first circuit are respectively connected to the water level detection interface and the first conductive member, and two ends of the second circuit are respectively connected to a ground terminal and the second conductive member; wherein the first conductive member and the second conductive member are arranged in the steam generating device, and when the water level in the steam generating device reaches a preset water level, the first conductive member and the second conductive member are both in contact with water to be electrically connected; the method includes: Acquiring electrical parameters collected by the water level detection interface; Based on the electrical parameters collected by the water level detection interface, water level detection is performed to obtain a water level detection result, and the water level detection result includes whether the water level in the steam generating device reaches a preset water level.

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