Oil cup liquid level detection method and device and range hood

Abstract

The invention discloses an oil cup liquid level detection method and device and an extractor hood, and relates to the technical field of extractor hoods, the method comprises the steps that a set of detection parameters of a liquid level detection assembly are obtained, the set of detection parameters comprise at least three parameters, and the at least three parameters are selected from a temperature value, a capacitance value, a flexible strain value and an acceleration value; based on the set of detection parameters, first motion parameters of the lifting rod are determined, and the first motion parameters comprise the first motion direction and the first motion speed; under the condition that any two parameters in the set of detection parameters meet a first sudden change condition, the moving distance of the lifting rod is obtained, the lifting rod is controlled to move in the direction away from the oil cup, and the two parameters comprise the first parameter and the second parameter; the first mutation condition represents that the first change rate of the first parameter is greater than a first threshold and the second change rate of the second parameter is greater than a second threshold. The liquid level state of the oil cup is judged through various parameters, the detection precision is improved, and the contact time of the lifting rod and oil dirt is shortened.

Description

Technical Field

[0001] The present application relates to the technical field of range hoods, and in particular to an oil cup liquid level detection method, device and range hood. Background Art

[0002] The range hood is one of the important kitchen appliances that are indispensable in cooking scenes. Its matching oil cup is used to temporarily store the oil separated by the range hood. However, since the accumulation process of oil is relatively slow and the location of the oil cup is usually relatively hidden, users often tend to neglect the timely cleaning and dumping of the oil cup. At present, some range hoods estimate the liquid level of the oil cup by accumulating working hours, but this method has a large error, which may cause oil overflow or frequent disassembly of the oil cup. In addition, some technical solutions use ultrasonic or laser ranging sensors to directly measure the oil cup liquid level, but since the oil in the oil cup may contaminate the ranging sensor, the measurement accuracy is not high and the ranging sensor is easily damaged. Summary of the invention

[0003] The purpose of this application is to provide an oil cup liquid level detection method, device and range hood to solve at least one of the above existing technical problems. The technical solution is as follows:

[0004] In a first aspect, the present application provides a method for detecting the liquid level of an oil cup, characterized in that the method is applied to a liquid level detection assembly and an oil cup, the liquid level detection assembly comprises a lifting rod, a detection member and a flexible connecting member, the lifting rod and the detection member are connected by a flexible connecting member, the lifting rod is used to drive the detection member and the flexible connecting member to move in a direction close to or away from the oil cup, and the method comprises:

[0005] Acquire a set of detection parameters of the liquid level detection component, wherein the set of detection parameters includes at least three parameters, and the at least three parameters are selected from temperature value, capacitance value, flexible strain value and acceleration value;

[0006] Based on the set of detection parameters, determining a first motion parameter of the lifting rod, the first motion parameter including a first motion direction and a first motion speed;

[0007] When any two parameters in the set of detection parameters satisfy a first mutation condition, the moving distance of the lifting rod is obtained and the lifting rod is controlled to move in a direction away from the oil cup, the two parameters include a first parameter and a second parameter, and the first mutation condition represents that a first change rate of the first parameter is greater than a first threshold value and a second change rate of the second parameter is greater than a second threshold value.

[0008] In a possible implementation manner, the obtaining of a set of detection parameters of the liquid level detection component, the set of detection parameters including at least three parameters, the at least three parameters being selected from the group consisting of temperature value, capacitance value, flexible strain value and acceleration value, the method further comprising:

[0009] Acquiring a first distance between the detection member and the oil cup;

[0010] adjusting the temperature of the detection member based on the first distance;

[0011] When the real-time temperature of the detection member is greater than the first preset temperature, the lifting rod is controlled to move at a uniform speed in a direction approaching the oil cup.

[0012] In a possible implementation manner, the detection component includes a fan and a drive motor, the drive motor is used to drive the fan to rotate, the acquiring a set of detection parameters of the liquid level detection component, the set of detection parameters includes at least three parameters, the at least three parameters are selected from the group consisting of temperature value, capacitance value, flexible strain value and acceleration value, and the method further includes:

[0013] Acquiring a rotation parameter of the detection member, wherein the rotation parameter includes at least one of a rotation speed of the fan and a power of the drive motor;

[0014] Based on the rotation parameters of the detection member, a set of detection parameters of the liquid level detection assembly is obtained.

[0015] In a possible implementation manner, after determining the first motion parameter of the lifting rod based on the set of detection parameters, wherein the first motion parameter includes a first motion direction and a first motion speed, the method further includes:

[0016] When the first change rate of the first parameter is greater than a first threshold or the second change rate of the second parameter is greater than a second threshold, acquiring a third change rate of the third parameter;

[0017] Based on the third change rate, a second motion parameter of the lifting rod is determined, where the second motion parameter includes a second motion direction and a second motion speed.

[0018] In a possible implementation manner, the method further includes:

[0019] During the process of the lifting rod moving from the initial position to the end position, if the first change rate of the first parameter is less than or equal to the first threshold and the first change rate of the second parameter is less than or equal to the second threshold, a first prompt signal is output, and the first prompt signal is used to prompt the user that the oil cup liquid level is within a preset range.

[0020] In a possible implementation manner, the method further includes:

[0021] During the process of the lifting rod moving from the initial position to the safety position, if the first change rate of the first parameter is less than or equal to a first threshold value and the second change rate of the second parameter is less than or equal to a second threshold value, the lifting rod is controlled to move at a uniform speed in a direction close to the oil cup at a first speed, and the safety position is located between the initial position and the preset position;

[0022] During the process of the lifting rod moving from the safety position to the end position, if the first change rate of the first parameter is less than or equal to a first threshold and the second change rate of the second parameter is less than or equal to a second threshold, the lifting rod is controlled to move at a uniform speed in a direction approaching the oil cup at a second speed, and the second speed is less than the first speed.

[0023] In a possible implementation manner, when any two parameters in the set of detection parameters satisfy a first mutation condition, obtaining the moving distance of the lifting rod and controlling the lifting rod to move in a direction away from the oil cup includes:

[0024] The moving distance of the lifting rod is obtained, and the lifting rod is controlled to move along a first direction to a first preset position and then along a second direction to a second preset position, wherein the first direction intersects with the second direction.

[0025] In a second aspect, the present application provides an oil cup liquid level detection device, which is applied to a liquid level detection assembly and an oil cup, wherein the liquid level detection assembly comprises a lifting rod, a detection member and a flexible connection member, wherein the lifting rod and the detection member are connected via a flexible connection member, and the lifting rod is used to drive the detection member and the flexible connection member to move in a direction close to or away from the oil cup, wherein the device comprises:

[0026] A data acquisition module, used for acquiring a set of detection parameters of the liquid level detection component, wherein the set of detection parameters includes at least three parameters, and the at least three parameters are selected from temperature value, capacitance value, flexible strain value and acceleration value;

[0027] A lifting module, configured to determine a first motion parameter of the lifting rod based on the set of detection parameters, wherein the first motion parameter includes a first motion direction and a first motion speed;

[0028] The first processing module is used to obtain the moving distance of the lifting rod and control the lifting rod to move in a direction away from the oil cup when any two parameters in the set of detection parameters meet a first mutation condition, the two parameters include a first parameter and a second parameter, and the first mutation condition represents that a first change rate of the first parameter is greater than a first threshold value and a second change rate of the second parameter is greater than a second threshold value.

[0029] In a third aspect, the present application provides a range hood, the range hood comprising a liquid level detection assembly and an oil cup, the liquid level detection assembly comprising a lifting rod, a detection member, a flexible connection member and a control device, the lifting rod and the detection member are connected via a flexible connection member, and the control device is connected to the lifting rod;

[0030] The lifting rod is used to drive the detection member and the flexible connecting member to move in a direction close to or away from the oil cup. The detection member is used to detect temperature value, capacitance value, flexible strain value and acceleration value. The control device is used to control the movement speed and direction of the lifting rod.

[0031] In a possible implementation manner, the detection element includes an acceleration sensor, a capacitive sensing device, a temperature regulating device and a temperature detecting device;

[0032] The acceleration sensor, the capacitive sensing device, the temperature regulating device and the temperature detecting device are integrated.

[0033] The present application provides an oil cup liquid level detection method, device and range hood, which have the following technical effects:

[0034] The method includes: obtaining a set of detection parameters of the liquid level detection component, the set of detection parameters includes at least three parameters, and the at least three parameters are selected from temperature value, capacitance value, flexible strain value and acceleration value; based on the set of detection parameters, determining the first motion parameter of the lifting rod, the first motion parameter includes a first motion direction and a first motion speed; when any two parameters in the set of detection parameters meet the first mutation condition, obtaining the moving distance of the lifting rod and controlling the lifting rod to move in a direction away from the oil cup, the two parameters include a first parameter and a second parameter, and the first mutation condition indicates that the first change rate of the first parameter is greater than the first threshold value and the second change rate of the second parameter is greater than the second threshold value. The liquid level state of the oil cup is judged by verifying the change rate of the detection parameters through multiple parameters, thereby improving the detection accuracy and reducing the contact time between the lifting rod and the oil stain.

[0035] Additional aspects and advantages 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 present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0037] Figure 1is a structural schematic diagram of a liquid level detection component provided in an embodiment of the present application;

[0038] Figure 2 This is a schematic diagram of the structure of an oil cup provided in an embodiment of the present application.

[0039] Figure 3 It is a flow chart of an oil cup liquid level detection method provided in an embodiment of the present application;

[0040] Figure 4 is a schematic diagram of an oil cup liquid level detection device provided in an embodiment of the present application;

[0041] Figure 5 It is a schematic diagram of the hardware structure of a device for implementing an oil cup liquid level detection method provided in an embodiment of the present application.

[0042] The reference numerals correspond to:

[0043] 10. Lifting rod; 20. Flexible connecting piece; 30. Detection piece; 40. Control device; 50. Oil cup; 51. Maximum liquid level position; 52. Warning liquid level position; 53. Minimum liquid level position. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0045] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or server that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0046] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0047] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0048] The term "and / or" herein is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the term "at least one" herein represents any combination of at least two of any one or more of a plurality of. For example, including at least one of A, B, and C can represent including any one or more elements selected from the set consisting of A, B, and C.

[0049] In addition, in order to better illustrate the present application, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0050] See also Figure 1 One embodiment of the present application provides a range hood, which includes a liquid level detection component and an oil cup 50. The liquid level detection component includes a lifting rod 10, a detection member 30, a flexible connection member 20 and a control device 40. The lifting rod 10 and the detection member 30 are connected by the flexible connection member 20, and the control device 40 is connected to the lifting rod 10; the lifting rod 10 is used to drive the detection member 30 and the flexible connection member 20 to move in a direction close to or away from the oil cup 50, the detection member 30 is used to detect temperature values, capacitance values, flexible strain values ​​and acceleration values, and the control device 40 is used to control the movement speed and movement direction of the lifting rod 10. By detecting the temperature value, capacitance value, flexible strain value and acceleration value, the liquid level state in the oil cup 50 is comprehensively judged, the error that may occur in a single detection method is avoided, and the detection accuracy is improved; the lifting rod 10 can move relative to the oil cup 50, which reduces the contact time between the detection member 30 and the oil stain.

[0051] It can be understood that the oil cup 50 is used to collect and store oil stains during the use of the range hood. When the oil stain level exceeds the highest level of the oil cup 50, the oil stain overflow will pollute the range hood or other kitchen appliances. When the oil stain level is low, but the user frequently disassembles and cleans the oil cup 50, it is easy to damage the oil cup 50. Some ways to measure the level of the oil cup 50 include ultrasonic measurement, laser measurement, etc., but when using ultrasonic measurement, the ultrasonic ranging sensor relies on the propagation of sound waves to measure the liquid level. When the oil stain covers the sensing area of ​​the liquid surface, the oil stain may change the propagation path of the sound wave or absorb the sound wave, resulting in signal attenuation or distortion. The oil stain may also form bubbles or impurities, further affecting the propagation and reflection of the sound wave, thereby affecting the accuracy of the measurement; when using laser measurement, the laser ranging sensor relies on the reflection of the laser beam to calculate the distance. If there is oil stain on the liquid surface, the surface of the oil stain will change the reflection characteristics of the laser. In addition, the different viscosity or thickness of the oil stain may affect the intensity of the reflected light and reduce the measurement accuracy. Many ultrasonic and laser sensors are not designed with oil pollution in mind, and common sensors may not be able to work stably in highly polluted environments.

[0052] Specifically, the control device 40 in the liquid level detection assembly is electrically connected to the lifting rod 10 and the detection member 30, respectively. One end of the lifting rod 10 close to the control device 40 is connected to the lifting drive device, which is used to drive the lifting rod 10 to move based on the control command issued by the control device 40. The lifting drive device is electrically connected to the control device 40. In one possible implementation, the lifting drive device includes a motion state detection module, which is used to detect the displacement distance of the lifting rod 10. The motion state detection module can calculate the displacement distance of the lifting rod 10 based on the number of running steps of the stepping motor or the rotation angle of the motor. In another possible implementation, a displacement sensor is connected to the lifting rod 10, and the displacement sensor is used to obtain the displacement distance of the lifting rod 10.

[0053] Specifically, the oil cup 50 includes a maximum liquid level position 51, a minimum liquid level position 52 and a warning liquid level position 53. The warning liquid level position 52 is located between the maximum liquid level position 51 and the minimum liquid level position 53. The minimum liquid level position is located at the plane where the bottom of the oil cup 50 is located, and the maximum liquid level position is located at the plane where the top of the oil cup 50 is located. The real-time liquid level height of the oil cup 50 exceeds the warning liquid level position, which indicates that there is too much oil stored in the oil cup 50.

[0054] Specifically, when the lifting rod 10 rises to the initial position, the lowest point of the lifting rod 10 is higher than the highest liquid level position of the oil cup 50; when the lifting rod 10 descends to the final position, the lowest point of the lifting rod 10 is higher than the highest liquid level position of the oil cup 50. During the movement of the lifting rod 10, the lifting rod 10 will not contact the range hood or the oil cup 50 itself.

[0055] See also Figure 2The detection member 30 of the embodiment of the present application includes an acceleration sensor, a capacitance sensing device, a temperature regulating device and a temperature detection device; the acceleration sensor, the capacitance sensing device, the temperature regulating device and the temperature detection device are integrated. Through the synchronous collection of multiple data such as acceleration, capacitance, temperature, etc., the liquid level and environmental changes of the oil cup 50 can be fully reflected, the accuracy of liquid level detection is improved, the installation, calibration and maintenance workload of a single sensor is reduced, and the maintenance frequency of the detection member 30 is reduced.

[0056] Specifically, the temperature regulating device is a heating device, which is connected to the temperature detecting device, and the capacitive sensing device is arranged on a side of the detecting member 30 close to the oil cup 50 .

[0057] See also Figure 3 , Figure 3 This is a flowchart of an oil cup level detection provided by an embodiment of the present application. The present application provides method operation steps such as the embodiment or flowchart, but may include more or fewer operation steps based on conventional or non-creative labor. The order of steps listed in the embodiment is only one way of executing the steps among many, and does not represent the only execution order. When the actual system or server product is executed, it can be executed in the order of the method shown in the embodiment or the figure, or in parallel (for example, in a parallel processor or multi-threaded processing environment). Figure 3 As shown, an oven temperature control method provided in an embodiment of the present application can be applied to Figure 1 The oil cup detection assembly shown and Figure 2 The oil cup shown in the figure may include the following steps:

[0058] S101, obtaining a set of detection parameters of the liquid level detection component, wherein the set of detection parameters includes at least three parameters, and the at least three parameters are selected from temperature value, capacitance value, flexible strain value and acceleration value.

[0059] Specifically, the detection member detects the temperature value T, capacitance value C, flexible strain value ε and acceleration value a of the parameters and sends the temperature value T, capacitance value C, flexible strain value ε and acceleration value a to the control device. Based on the temperature value T, capacitance value C, flexible strain value ε and acceleration value a, their corresponding change parameters are obtained as the temperature value change rate ΔT, capacitance value change rate ΔC, flexible strain value change rate Δε and acceleration value change rate Δa.

[0060] S103, based on a set of detection parameters, determining a first motion parameter of the lifting rod, the first motion parameter including a first motion direction and a first motion speed.

[0061] Specifically, when two or more parameters in a set of detection parameters suddenly change, it means that the detection part has moved from the air medium to the oil medium and has contacted the oil interface; when only one parameter in a set of detection parameters suddenly changes, it means that an abnormal situation has occurred in the detection part and the detection part needs to be re-tested; when no parameter in a set of detection parameters suddenly changes, it means that the detection part has moved in the air medium.

[0062] Specifically, the first movement direction includes a direction close to the oil cup and a direction away from the oil cup. The first movement speed represents the moving speed of the lifting rod. When the lifting rod moves at a uniform speed, the acceleration value a is zero.

[0063] S105, when any two parameters in a set of detection parameters meet a first mutation condition, obtain the moving distance of the lifting rod and control the lifting rod to move in a direction away from the oil cup, the two parameters include a first parameter and a second parameter, and the first mutation condition indicates that a first change rate of the first parameter is greater than a first threshold value and a second change rate of the second parameter is greater than a second threshold value.

[0064] Specifically, exemplarily, a set of detection parameters includes temperature value T and capacitance value C. When the temperature value change rate ΔT is greater than the preset temperature threshold and the capacitance value change rate ΔC is greater than the preset capacitance threshold, it means that the detection part has contacted with oil stains, the moving distance s of the lifting rod is obtained, and the liquid level height h=Hs is calculated.

[0065] Wherein, h is the liquid level height of the oil cup, H is the straight-line distance between the lifting rod at the initial position and the oil cup, and s is the moving distance of the lifting rod. If the liquid level height of the oil cup exceeds the warning threshold, a warning lifting signal is issued, which is used to remind the user to clean the oil cup.

[0066] Specifically, when the detection piece contacts the oil, the control device controls the lifting rod to move in a direction away from the oil cup. If the detection piece is stained with oil, the oil will fall back into the oil cup during the rising process, that is, the detection piece has almost no contact with the oil.

[0067] In a specific embodiment, before S101, the above step further includes:

[0068] S202, obtaining a first distance between the detection member and the oil cup.

[0069] Specifically, there is a first distance between the detection member and the oil cup, and the first distance represents a straight-line distance between the detection member and the oil cup. The lifting rod moves at a constant speed or according to a unit displacement distance during the descending process.

[0070] S204: Adjust the temperature of the detection element based on the first distance.

[0071] Specifically, the first distance represents the distance between the detection element and the warning liquid level position. If the first distance is greater than zero, the heating device is turned on, and when the detection element moves in the air medium, the temperature of the detection element is greater than the first preset temperature T1. The first preset temperature T1 is greater than the ambient temperature. In the embodiment of this specification, the first preset temperature T1 is 50°C.

[0072] S206, when the real-time temperature of the detection member is greater than the first preset temperature, the lifting rod is controlled to move at a constant speed in a direction close to the oil cup.

[0073] Specifically, when the real-time temperature of the detection part is greater than the first preset temperature, the lifting rod is controlled to move at a constant speed in the direction close to the oil cup. When the real-time temperature of the detection part is less than or equal to the first preset temperature, it indicates that the temperature detection device and / or temperature adjustment device of the detection part need to be repaired. At this time, the lifting rod is controlled to remain still or rise to the initial position. By combining the first distance and temperature parameters, the detection part can dynamically adjust the detection strategy to adapt to different liquid levels, temperatures and environmental conditions, and the liquid level detection component is more versatile.

[0074] In a specific embodiment, the detection component includes a fan and a drive motor, and the drive motor is used to drive the fan to rotate. The above S101 also includes:

[0075] S301, obtaining a rotation parameter of a detection element, where the rotation parameter includes at least one of a rotation speed of a fan and a power of a driving motor.

[0076] Specifically, during the detection process, the lifting rod moves at a constant speed in the direction close to the oil cup and rotates at a constant speed in a preset direction. A photoelectric sensor, a Hall effect sensor or a speed encoder is used to obtain the real-time speed of the fan, and the current power is calculated by the power detection module of the drive motor. When at least one of the rate of change of the speed or the rate of change of the power exceeds the corresponding threshold, it indicates that the detection part has entered the oil stain.

[0077] S303, obtaining a set of detection parameters of the liquid level detection component based on the rotation parameters of the detection member.

[0078] Specifically, a set of detection parameters includes temperature value T, capacitance value C, flexible strain value ε, acceleration value a, rotation speed ω and power P. Based on temperature value T, capacitance value C, flexible strain value ε, acceleration value a, rotation speed ω and power P, the corresponding change parameters are temperature value change rate ΔT, capacitance value change rate ΔC, flexible strain value change rate Δε, acceleration value change rate Δa, rotation speed change rate Δω and change rate Δpower P. By adding a fan to the detection part, the lifting rod can be lifted and rotated, which enriches the range of detection parameters and makes the detection effect more accurate.

[0079] In a specific embodiment, after S103, the above step further includes:

[0080] S401, when a first change rate of the first parameter is greater than a first threshold or a second change rate of the second parameter is greater than a second threshold, obtaining a third change rate of the third parameter.

[0081] Specifically, a target parameter combination is screened out from a set of detection parameters, and the target parameter combination includes a first parameter and a second parameter. Exemplarily, temperature value T and capacitance value C are selected as the target parameter combination, and the temperature value change rate ΔT and the capacitance value change rate ΔC are obtained. If the temperature value change rate ΔT is greater than the corresponding preset temperature threshold and the capacitance value change rate ΔC is greater than the corresponding preset capacitance threshold, a third parameter is obtained, wherein the third parameter is the acceleration value a and the corresponding acceleration value change rate Δa.

[0082] S403: Determine a second motion parameter of the lifting rod based on the third change rate, where the second motion parameter includes a second motion direction and a second motion speed.

[0083] Specifically, if the third rate of change exceeds the third threshold, it indicates that the detection part has touched the oil stain, and the lifting rod is controlled to move at a constant speed in the direction away from the oil cup. If the third rate of change is too large or too small, the lifting rod is controlled to stop moving and a warning is issued to prevent damage to the detection part. The dynamic monitoring parameters are monitored through triple verification to ensure that the movement of the lifting rod is adapted to the current detection conditions and reduce measurement errors.

[0084] In a specific embodiment, the above oil cup liquid level detection method further includes:

[0085] During the process of the lifting rod moving from the initial position to the end position, if the first change rate of the first parameter is less than or equal to the first threshold and the first change rate of the second parameter is less than or equal to the second threshold, a first prompt signal is output, and the first prompt signal is used to prompt the user that the oil cup liquid level is within a preset range.

[0086] Specifically, exemplarily, in the process of the lifting rod moving from the initial position to the terminal position, the temperature value T and the capacitance value C are selected as the first parameter and the second parameter. If the temperature value change rate ΔT is less than or equal to the corresponding preset temperature threshold and the capacitance value change rate ΔC is less than or equal to the corresponding preset capacitance threshold, it means that the detection element moves in the air medium, avoiding excessive detection actions.

[0087] In a specific embodiment, the above oil cup liquid level detection method further includes:

[0088] S501, during the movement of the lifting rod from the initial position to the safety position, if the first change rate of the first parameter is less than or equal to the first threshold and the second change rate of the second parameter is less than or equal to the second threshold, the lifting rod is controlled to move at a uniform speed in a direction close to the oil cup at a first speed, and the safety position is between the initial position and the preset position.

[0089] Specifically, the movement of the lifting rod from the initial position to the terminal position includes two stages, namely the first stage and the second stage. The lifting rod moves at different speeds in the two stages. The first stage is used for initial rapid measurement of the oil cup liquid level, and the second stage is used for accurate detection of the oil cup liquid level.

[0090] S503, during the process of the lifting rod moving from the safe position to the end position, if the first change rate of the first parameter is less than or equal to the first threshold and the second change rate of the second parameter is less than or equal to the second threshold, the lifting rod is controlled to move at a uniform speed in a direction close to the oil cup at a second speed, and the second speed is less than the first speed.

[0091] Specifically, the safe position is located at the highest liquid level position or warning liquid level position of the oil cup. In most cases, the oil is between the safe position and the end position. If the lifting rod moves too fast, the lifting rod is easily contaminated with more oil. Therefore, in the second stage, the lifting rod moves at the second speed, and the thresholds of each parameter in the corresponding detection parameters are also adaptively changed. Using different moving speeds of the lifting rod in different detection stages helps reduce liquid disturbance and improve the stability and reliability of detection data.

[0092] In a specific embodiment, the above S105 includes:

[0093] The moving distance of the lifting rod is obtained, and the lifting rod is controlled to move along a first direction to a first preset position and then along a second direction to a second preset position, wherein the first direction intersects with the second direction.

[0094] Specifically, in one embodiment, the moving distance s of the lifting rod is obtained. If the moving distance s of the lifting rod is less than or equal to the first moving threshold, the lifting rod is controlled to move in the first direction. If the moving distance s of the lifting rod is greater than the first moving threshold, the lifting rod is controlled to move in the second direction. The first direction is the direction away from the oil cup, and the second direction is along the length of the oil cup. The second direction is orthogonal to the first direction. In this way, the lifting rod can move in multiple stages in different directions to meet the measurement requirements of complex liquid level detection and improve the response speed of the lifting rod and the efficiency of liquid level detection.

[0095] The method includes: obtaining a set of detection parameters of the liquid level detection component, the set of detection parameters includes at least three parameters, and the at least three parameters are selected from temperature value, capacitance value, flexible strain value and acceleration value; based on the set of detection parameters, determining the first motion parameter of the lifting rod, the first motion parameter includes a first motion direction and a first motion speed; when any two parameters in the set of detection parameters meet the first mutation condition, obtaining the moving distance of the lifting rod and controlling the lifting rod to move in a direction away from the oil cup, the two parameters include a first parameter and a second parameter, and the first mutation condition indicates that the first change rate of the first parameter is greater than the first threshold value and the second change rate of the second parameter is greater than the second threshold value. The liquid level state of the oil cup is judged by verifying the change rate of the detection parameters through multiple parameters, thereby improving the detection accuracy and reducing the contact time between the lifting rod and the oil stain.

[0096] The present application also provides an oil cup liquid level detection device, such as Figure 4 As shown, the apparatus may include:

[0097] The data acquisition module 410 is used to acquire a set of detection parameters of the liquid level detection component, wherein the set of detection parameters includes at least three parameters, and the at least three parameters are selected from temperature value, capacitance value, flexible strain value and acceleration value;

[0098] A lifting module 420, configured to determine a first motion parameter of the lifting rod based on a set of detection parameters, wherein the first motion parameter includes a first motion direction and a first motion speed;

[0099] The first processing module 430 is used to obtain the moving distance of the lifting rod and control the lifting rod to move in a direction away from the oil cup when any two parameters in a set of detection parameters meet a first mutation condition, the two parameters include a first parameter and a second parameter, and the first mutation condition indicates that a first change rate of the first parameter is greater than a first threshold and a second change rate of the second parameter is greater than a second threshold.

[0100] Specifically, the above-mentioned oil cup liquid level detection device also includes:

[0101] A distance acquisition module, used for acquiring a first distance between the detection member and the oil cup;

[0102] a temperature regulating module, configured to regulate the temperature of the detection element based on the first distance;

[0103] The first regulating module controls the lifting rod to move at a constant speed in a direction approaching the oil cup when the real-time temperature of the detection member is greater than a first preset temperature.

[0104] Specifically, the above-mentioned oil cup liquid level detection device also includes:

[0105] A rotation parameter acquisition module, used to acquire a rotation parameter of the detection element, wherein the rotation parameter includes at least one of a rotation speed of the fan and a power of the drive motor;

[0106] The update detection module is used to obtain a set of detection parameters of the liquid level detection component based on the rotation parameters of the detection member.

[0107] Specifically, the above-mentioned oil cup liquid level detection device also includes:

[0108] A third change rate determination module, configured to obtain a third change rate of a third parameter when the first change rate of the first parameter is greater than a first threshold or the second change rate of the second parameter is greater than a second threshold;

[0109] The second adjustment module is used to determine a second motion parameter of the lifting rod based on the third change rate, where the second motion parameter includes a second motion direction and a second motion speed.

[0110] Specifically, the above-mentioned oil cup liquid level detection device also includes:

[0111] The first prompt module is used to output a first prompt signal when the first change rate of the first parameter is less than or equal to a first threshold and the first change rate of the second parameter is less than or equal to a second threshold during the process of the lifting rod moving from the initial position to the terminal position. The first prompt signal is used to prompt the user that the oil cup liquid level is within a preset range.

[0112] Specifically, the above-mentioned oil cup liquid level detection device also includes:

[0113] a first motion module, configured to control the lifting rod to move uniformly at a first speed in a direction close to the oil cup when the lifting rod moves from the initial position to the safety position, if the first change rate of the first parameter is less than or equal to a first threshold value and the second change rate of the second parameter is less than or equal to a second threshold value, and the safety position is between the initial position and the preset position;

[0114] A second motion module is used to control the lifting rod to move uniformly at a second speed in a direction approaching the oil cup if a first change rate of the first parameter is less than or equal to a first threshold and a second change rate of the second parameter is less than or equal to a second threshold during the process of the lifting rod moving from the safety position to the end position, and the second speed is less than the first speed.

[0115] In one embodiment of the present application, the first adjustment module includes:

[0116] The first motion unit is used to obtain the moving distance of the lifting rod, control the lifting rod to move along a first direction to a first preset position and then along a second direction to a second preset position, and the first direction intersects with the second direction.

[0117] It should be noted that the device provided in the above embodiment, when implementing its functions, is only illustrated by the division of the above functional modules. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the device and method embodiments provided in the above embodiment belong to the same concept, and the specific implementation process is detailed in the method embodiment, which will not be repeated here.

[0118] An embodiment of the present application provides a computer device, which includes a processor and a memory, wherein the memory stores at least one instruction or at least one program, and the at least one instruction or the at least one program is loaded and executed by the processor to implement an oil cup liquid level detection method provided in the above method embodiment.

[0119] Figure 5 The hardware structure diagram of a device for implementing a method for detecting the level of an oil cup provided in an embodiment of the present application is shown. The device may participate in constituting or include the apparatus or system provided in an embodiment of the present application. Figure 5 As shown, the device 5 may include one or more (502a, 502b, ..., 502n are used to illustrate) processors 502 (the processor 502 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA), a memory 504 for storing data, and a transmission device 506 for communication functions. In addition, it may also include: a display, an input / output interface (I / O interface), a universal serial bus (USB) port (which may be included as one of the ports of the I / O interface), a network interface, a power supply and / or a camera. It can be understood by those skilled in the art that Figure 5 The structure shown is for illustration only and does not limit the structure of the above electronic device. Figure 5 More or fewer components as shown, or with Figure 5 Different configurations are shown.

[0120] It should be noted that the one or more processors 502 and / or other data processing circuits described above may generally be referred to herein as "data processing circuits". The data processing circuits may be embodied in whole or in part as software, hardware, firmware, or any other combination thereof. In addition, the data processing circuit may be a single independent processing module, or may be incorporated in whole or in part into any of the other components in the device 5 (or mobile device). As involved in the embodiments of the present application, the data processing circuit acts as a processor control (e.g., selection of a variable resistor terminal path connected to an interface).

[0121] The memory 504 can be used to store software programs and modules of application software, such as program instructions / data storage devices corresponding to the method in the embodiment of the present application. The processor 502 executes various functional applications and data processing by running the software programs and modules stored in the memory 504, that is, to implement the above-mentioned oil cup level detection method. The memory 504 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 504 may further include a memory remotely arranged relative to the processor 502, and these remote memories may be connected to the device 5 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0122] The transmission device 506 is used to receive or send data via a network. The specific example of the above network may include a wireless network provided by a communication provider of the device 5. In one example, the transmission device 606 includes a network adapter (Network Interface Controller, NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 606 can be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0123] The display may be, for example, a touch screen liquid crystal display (LCD) which may enable a user to interact with a user interface of the device 5 (or mobile device).

[0124] An embodiment of the present application also provides a computer-readable storage medium, which can be set in a server to store at least one instruction or at least one program related to an oil cup liquid level detection method in a method embodiment. The at least one instruction or the at least one program oil cup liquid level detection is loaded and executed by the processor to implement an oil cup liquid level detection method provided in the above method embodiment.

[0125] Optionally, in this embodiment, the storage medium may be located in at least one of the multiple network servers of the computer network. Optionally, in this embodiment, the storage medium may include, but is not limited to, various media that can store program codes, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk, or an optical disk.

[0126] The embodiment of the present invention further provides a computer program product or a computer program, wherein the computer program product or the computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes a water leakage detection method provided in the above various optional implementations.

[0127] It should be noted that the above-mentioned sequence of the embodiments of the present application is for description only and does not represent the advantages and disadvantages of the embodiments. The above-mentioned specific embodiments of the present application are described. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0128] Each embodiment in this application is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device, equipment and storage medium embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0129] A person skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware or by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a disk or an optical disk, etc.

[0130] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A method for detecting the level of an oil cup, characterized in that: The method is applied to a liquid level detection assembly and an oil cup. The liquid level detection assembly includes a lifting rod, a detection member and a flexible connection member. The lifting rod and the detection member are connected via a flexible connection member. The lifting rod is used to drive the detection member and the flexible connection member to move in a direction close to or away from the oil cup. The method includes: Acquire a set of detection parameters of the liquid level detection component, wherein the set of detection parameters includes at least three parameters, and the at least three parameters are selected from temperature value, capacitance value, flexible strain value and acceleration value; Based on the set of detection parameters, determining a first motion parameter of the lifting rod, the first motion parameter including a first motion direction and a first motion speed; When any two parameters in the set of detection parameters satisfy a first mutation condition, the moving distance of the lifting rod is obtained and the lifting rod is controlled to move in a direction away from the oil cup, the two parameters include a first parameter and a second parameter, and the first mutation condition represents that a first change rate of the first parameter is greater than a first threshold value and a second change rate of the second parameter is greater than a second threshold value.

2. The method according to claim 1, characterized in that: The method further comprises: obtaining a set of detection parameters of the liquid level detection component, wherein the set of detection parameters includes at least three parameters, and the at least three parameters are selected from the group consisting of temperature value, capacitance value, flexible strain value and acceleration value. Acquiring a first distance between the detection member and the oil cup; adjusting the temperature of the detection member based on the first distance; When the real-time temperature of the detection member is greater than the first preset temperature, the lifting rod is controlled to move at a uniform speed in a direction approaching the oil cup.

3. The method according to claim 1, characterized in that: The detection component includes a fan and a drive motor, and the drive motor is used to drive the fan to rotate. The step of obtaining a set of detection parameters of the liquid level detection component includes at least three parameters, and the at least three parameters are selected from the group consisting of temperature value, capacitance value, flexible strain value and acceleration value. The method also includes: Acquiring a rotation parameter of the detection member, wherein the rotation parameter includes at least one of a rotation speed of the fan and a power of the drive motor; Based on the rotation parameters of the detection member, a set of detection parameters of the liquid level detection assembly is obtained.

4. The method according to any one of claims 1 to 3, characterized in that: After determining the first motion parameter of the lifting rod based on the set of detection parameters, wherein the first motion parameter includes a first motion direction and a first motion speed, the method further includes: When the first change rate of the first parameter is greater than a first threshold or the second change rate of the second parameter is greater than a second threshold, acquiring a third change rate of the third parameter; Based on the third change rate, a second motion parameter of the lifting rod is determined, where the second motion parameter includes a second motion direction and a second motion speed.

5. The method according to any one of claims 1 to 3, characterized in that: The method further comprises: During the process of the lifting rod moving from the initial position to the end position, if the first change rate of the first parameter is less than or equal to the first threshold and the first change rate of the second parameter is less than or equal to the second threshold, a first prompt signal is output, and the first prompt signal is used to prompt the user that the oil cup liquid level is within a preset range.

6. The method according to claim 5, characterized in that The method further comprises: During the process of the lifting rod moving from the initial position to the safety position, if the first change rate of the first parameter is less than or equal to a first threshold value and the second change rate of the second parameter is less than or equal to a second threshold value, the lifting rod is controlled to move at a uniform speed in a direction close to the oil cup at a first speed, and the safety position is located between the initial position and the preset position; During the process of the lifting rod moving from the safety position to the end position, if the first change rate of the first parameter is less than or equal to a first threshold and the second change rate of the second parameter is less than or equal to a second threshold, the lifting rod is controlled to move at a uniform speed in a direction approaching the oil cup at a second speed, and the second speed is less than the first speed.

7. The method according to any one of claims 1 to 3, characterized in that: When any two parameters in the set of detection parameters satisfy the first mutation condition, obtaining the moving distance of the lifting rod and controlling the lifting rod to move in a direction away from the oil cup includes: The moving distance of the lifting rod is obtained, and the lifting rod is controlled to move along a first direction to a first preset position and then along a second direction to a second preset position, wherein the first direction intersects with the second direction.

8. An oil cup liquid level detection device, characterized in that: Applied to a liquid level detection assembly and an oil cup, the liquid level detection assembly comprises a lifting rod, a detection member and a flexible connecting member, the lifting rod and the detection member are connected by a flexible connecting member, the lifting rod is used to drive the detection member and the flexible connecting member to move in a direction close to or away from the oil cup, the device comprises: A data acquisition module, used for acquiring a set of detection parameters of the liquid level detection component, wherein the set of detection parameters includes at least three parameters, and the at least three parameters are selected from temperature value, capacitance value, flexible strain value and acceleration value; A lifting module, configured to determine a first motion parameter of the lifting rod based on the set of detection parameters, wherein the first motion parameter includes a first motion direction and a first motion speed; The first processing module is used to obtain the moving distance of the lifting rod and control the lifting rod to move in a direction away from the oil cup when any two parameters in the set of detection parameters meet a first mutation condition, the two parameters include a first parameter and a second parameter, and the first mutation condition represents that a first change rate of the first parameter is greater than a first threshold value and a second change rate of the second parameter is greater than a second threshold value.

9. A range hood, characterized in that: The range hood comprises a liquid level detection assembly and an oil cup, the liquid level detection assembly comprises a lifting rod, a detection member, a flexible connection member and a control device, the lifting rod and the detection member are connected via a flexible connection member, and the control device is connected to the lifting rod; The lifting rod is used to drive the detection member and the flexible connecting member to move in a direction close to or away from the oil cup. The detection member is used to detect temperature value, capacitance value, flexible strain value and acceleration value. The control device is used to control the movement speed and direction of the lifting rod.

10. The range hood according to claim 9, characterized in that: The detection element includes an acceleration sensor, a capacitive sensing device, a temperature regulating device and a temperature detecting device; The acceleration sensor, the capacitive sensing device, the temperature regulating device and the temperature detecting device are integrated.

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