Cooking operation detection device and dry burning prevention device in cooking

Abstract

The utility model discloses a detection device for cooking operation and a dry burning prevention device in cooking. The detection device comprises an infrared geminate transistor used for emitting infrared light to a preset area and receiving the infrared light reflected by the preset area; the waveform processing module is used for carrying out waveform acquisition on the reflected infrared light to obtain a detection signal; and the cooking operation determination module is used for determining whether cooking operation exists in the preset area or not according to the detection signal and historical cooking operation data. According to the cooking operation detection device provided by the utility model, the detection signal in the preset area is acquired, and whether cooking operation exists in the preset area is determined according to the detection signal and the historical cooking operation data, so that whether a user operates the kitchen range in front of the kitchen range can be detected; the situation that the temperature of the pot bottom temperature measuring probe rises sharply in a specific scene, and consequently the dry burning prevention function is turned off by mistake is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent household appliances, in particular to a cooking operation detection device and a dry-burn prevention device in cooking. Background Art

[0002] At present, the popularity of the anti-dry-burn function on stoves is getting higher and higher. Existing stoves with anti-dry-burn function generally use the method of detecting the temperature of the bottom of the pot. Specifically, when the temperature of the bottom of the pot exceeds the preset temperature threshold, the anti-dry-burn alarm or anti-dry-burn measures will be triggered. However, the temperature of the stove, especially the local temperature of the stove, varies greatly. For example, when the user flips or lifts the pot during cooking, or some normal processes in the process of cooking certain dishes (such as fried dumplings), the temperature of the temperature probe will rise sharply, triggering the start of the anti-dry-burn function, and causing the problem of accidentally turning off the fire during cooking. Therefore, if the temperature threshold of the anti-dry-burn function is set too low, the anti-dry-burn function will be triggered frequently, affecting normal cooking operations. If the temperature threshold is set too high, the anti-dry-burn function may not be triggered in time. The anti-dry-burn function cannot meet actual usage requirements if it is triggered only by temperature conditions. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defect in the prior art that the anti-dry-burning function is only triggered by temperature conditions and cannot meet actual usage needs, and to provide a detection device for cooking operations and a dry-burning prevention device in cooking.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] The utility model also provides a cooking operation detection device, the detection device comprising:

[0006] Infrared pair tubes, used to emit infrared light to the preset area and receive infrared light reflected by the preset area;

[0007] A waveform processing module, used for collecting the waveform of the reflected infrared light to obtain a detection signal;

[0008] The cooking operation determination module is used to determine whether there is a cooking operation in the preset area according to the detection signal and the historical cooking operation data.

[0009] Preferably, the preset area includes a cooking area in front of the cooker; and / or,

[0010] The infrared pair tubes are arranged in mutually isolated shielding structures, and the shielding structures include an opening facing the preset area.

[0011] Preferably, the historical cooking operation data includes historical cooking operation waveform data; the cooking operation determination module is specifically used to compare the detection signal with a reference cooking waveform to obtain the operation stage of the cooking operation in the preset area;

[0012] The reference cooking waveform is formed by fitting according to historical cooking operation waveform data, and is used to characterize at least one operation stage of the cooking operation.

[0013] Preferably, the cooking operation determination module is further specifically used to determine whether there is a cooking operation in the preset area according to whether the signal strength of the detection signal meets a preset signal strength threshold range.

[0014] The utility model also provides a dry burning prevention device in cooking, characterized in that the dry burning prevention device comprises:

[0015] A temperature sensor is used to obtain the temperature value of the stove;

[0016] The dry-burn determination module is used to detect whether there is a cooking operation in a preset area using the cooking operation detection device as described above when the temperature value of the stove is greater than a preset temperature threshold; and if there is no cooking operation in the preset area, execute preset dry-burn prevention measures.

[0017] The utility model provides a cooking operation detection method, the detection method comprising:

[0018] Acquire detection signals within a preset area;

[0019] It is determined whether there is a cooking operation in the preset area according to the detection signal and the historical cooking operation data.

[0020] Preferably, before the step of acquiring the detection signal in the preset area, the detection method further comprises:

[0021] emitting infrared light to the preset area, and receiving infrared light reflected by the preset area;

[0022] The reflected infrared light is subjected to waveform collection to obtain the detection signal.

[0023] Preferably, the historical cooking operation data includes historical cooking operation waveform data; the step of determining whether there is a cooking operation in the preset area according to the detection signal and the historical cooking operation data includes:

[0024] comparing the detection signal with a reference cooking waveform to obtain an operation stage of the cooking operation within the preset area;

[0025] The reference cooking waveform is formed by fitting according to historical cooking operation waveform data, and is used to characterize at least one operation stage of the cooking operation.

[0026] Preferably, after the step of acquiring the detection signal within the preset area, the detection method further comprises:

[0027] It is determined whether there is a cooking operation in the preset area according to whether the signal strength of the detection signal meets a preset signal strength threshold range.

[0028] Preferably, the preset area includes a cooking area in front of the cooker.

[0029] The utility model also provides a method for preventing dry burning in cooking, the method comprising:

[0030] Get the temperature value of the stove;

[0031] When the temperature value of the cooker is greater than a preset temperature threshold, detecting whether there is a cooking operation in the preset area using the cooking operation detection method as described above;

[0032] If not, execute the preset dry boil prevention measures.

[0033] The utility model also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the above-mentioned cooking operation detection method or dry-burn prevention method in cooking when executing the computer program.

[0034] The utility model also provides a computer-readable medium on which computer instructions are stored. When the computer instructions are executed by a processor, the cooking operation detection method or the dry-burn prevention method in cooking as described above is implemented.

[0035] The positive and progressive effects of the utility model are:

[0036] The cooking operation detection method provided by the utility model obtains the detection signal in the preset area, and determines whether there is a cooking operation in the preset area according to the detection signal and the historical cooking operation data. It can detect whether the user is operating the stove in front of the stove, and effectively reduce the situation in which the temperature of the temperature measuring probe at the bottom of the pot rises sharply in certain scenarios (such as flipping the pot, moving the pot, cooking dumplings), causing the anti-dry-burn function to mistakenly shut down the fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of this specification, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are only some examples or embodiments of this specification. For ordinary technicians in this field, this specification can also be applied to other similar scenarios based on these drawings without creative work. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0038] Figure 1 This is a first structural schematic diagram of the cooking operation detection device in Example 1 of the utility model.

[0039] Figure 2 This is a second structural schematic diagram of the cooking operation detection device in Example 1 of the utility model.

[0040] Figure 3 This is a third structural schematic diagram of the cooking operation detection device in Example 1 of the utility model.

[0041] Figure 4 This is a fourth structural schematic diagram of the cooking operation detection device in Example 1 of the utility model.

[0042] Figure 5 This is an example diagram of a reference cooking waveform in Embodiment 1 of the present invention.

[0043] Figure 6 This is the first flow chart of the cooking operation detection method in Example 3 of the present invention.

[0044] Figure 7 This is the second flow chart of the cooking operation detection method in Example 3 of the present invention.

[0045] Figure 8 This is a schematic diagram of the structure of an electronic device in Example 5 of the utility model. DETAILED DESCRIPTION

[0046] The present invention is further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments.

[0047] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the text does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0048] It should be understood that the "system", "system", "unit" and / or "module" used herein are a method for distinguishing different components, elements, parts, portions or assemblies at different levels. However, if other words can achieve the same purpose, the words can be replaced by other expressions.

[0049] As shown in this document, unless the context clearly indicates an exception, the words "a", "an", "an" and / or "the" do not refer to the singular and may also include the plural, unless the context clearly indicates an exception. Generally speaking, the terms "include" and "comprise" only indicate that the steps and elements that have been clearly identified are included, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.

[0050] The definitions of inclusion in this document, such as the terms "having", "may have", "include" or "may include" used herein, indicate the existence of the corresponding functions, operations, elements, etc. herein, and do not limit the existence of one or more other functions, operations, elements, etc. In addition, it should be understood that the terms "including" or "having" used herein indicate the existence of the features, numbers, steps, operations, elements, components, or a combination thereof described in the specification, without excluding the existence or addition of one or more other features, numbers, steps, operations, elements, components, or a combination thereof.

[0051] Flowcharts are used herein to illustrate the operations performed by the systems of the embodiments of this invention. It should be understood that the preceding or following operations are not necessarily performed precisely in order. Instead, the various steps may be processed in reverse order or simultaneously. At the same time, other operations may also be added to these processes, or one or more operations may be removed from these processes.

[0052] Example 1

[0053] Please refer to Figure 1 , which is a first structural diagram of the cooking operation detection device in this embodiment. Specifically, Figure 1 As shown, the detection device comprises:

[0054] A detection signal acquisition module 1 is used to acquire a detection signal within a preset area;

[0055] The cooking operation determination module 2 is used to determine whether there is a cooking operation in the preset area according to the detection signal and the historical cooking operation data.

[0056] Please refer to Figure 2 , which is a second structural diagram of the cooking operation detection device in this embodiment. Specifically, Figure 2 As shown, in this embodiment, the detection device further includes:

[0057] The infrared pair tube 3 is used to emit infrared light to a preset area and receive infrared light reflected by the preset area;

[0058] The waveform processing module 4 is used to collect the waveform of the reflected infrared light to obtain a detection signal.

[0059] In an optional embodiment, the preset area includes a cooking area in front of the cooker; the infrared tubes 3 are arranged in mutually isolated shielding structures, and the shielding structure includes an opening facing the preset area. Figure 3 , which is a third structural diagram of the cooking operation detection device in this embodiment. Specifically, Figure 3 As shown, the shielding structure 5 has two openings facing the preset area, and the infrared pair tubes 3 are respectively arranged in the two openings. On the one hand, the shielding structure 5 plays the role of isolating the infrared transmitting tube and the receiving tube, ensuring that the infrared receiving tube receives the infrared light emitted by the infrared transmitting tube and the infrared light emitted back by the target object in the preset area; on the other hand, the shielding structure 5 plays the role of adjusting the infrared light transmission and reception direction, which can ensure that the infrared light transmission and reception direction is obliquely upward, and can control the range of the left and right directions. Please refer to Figure 4 , which is a fourth structural diagram of the cooking operation detection device in this embodiment. Preferably, Figure 4 As shown, the cooking operation detection device can be set on the panel of a cooking device such as a stove to detect the behavior of a target object within a preset distance and a preset range in front of the stove.

[0060] In another optional embodiment, the historical cooking operation data includes historical cooking operation waveform data; the cooking operation determination module 2 is specifically used to compare the detection signal with the reference cooking waveform to obtain the operation stage of the cooking operation within a preset area; the reference cooking waveform is formed by fitting the historical cooking operation waveform data, and is used to characterize at least one operation stage of the cooking operation.

[0061] Please refer to Figure 5 , which is an example diagram of a reference cooking waveform in this embodiment. Specifically, Figure 5 As shown, a reference cooking waveform is obtained by collecting and fitting the infrared reflection waveforms generated by a large number of trial users' basic cooking actions. The reference cooking waveform represents at least one operation stage of the cooking operation. Figure 5 The reference cooking waveform in the algorithm includes four operation stages that appear in sequence, namely, the user approaches the cooker and ignites the cooker, adds cooking ingredients, stir-fries ingredients, and removes ingredients from the cooker. Each operation stage has different waveform characteristics. By comparing the detection signal with the reference cooking waveform, the operation stage of the cooking operation can be determined.

[0062] In addition, the cooking operation determination module 2 is also specifically used to determine whether there is a cooking operation in the preset area according to whether the signal strength of the detection signal meets the preset signal strength threshold range. Specifically, the signal strength of the detection signal can reflect whether there is a person in the preset area, and can further assist in determining whether there is a cooking operation. When the target object is close, the infrared light intensity sampling AD value received by the infrared receiving tube is large, and when the target object is far away, the infrared light intensity sampling AD value received by the infrared receiving tube is small. The infrared intensity threshold of the receiving tube can be pre-set according to historical data, and it can be determined that there is someone in front of the stove according to the mapping relationship between infrared intensity and distance. For example, the infrared intensity of the receiving tube is between the range a1 and a2, indicating that the distance of the person is between A and B.

[0063] Preferably, the infrared intensity meets the set threshold range, and the detection signal meets the pre-stored cooking action waveform, which can be used as the judgment condition for detecting the cooking operation at the same time, further improving the accuracy of detecting the cooking operation. That is, when the conditions ① the infrared intensity meets the set threshold range, indicating that the user is within the detection range in front of the cooker; and the received infrared waveform meets the condition ② the user operation meets the pre-stored cooking action waveform; it is output that the user is detected in front of the cooker and is performing a cooking operation.

[0064] The cooking operation detection device provided in the present embodiment collects and fits the infrared reflection waveforms generated by the basic cooking actions of a large number of trial users to obtain a reference cooking waveform, obtains the detection signal in the preset area, and determines whether there is a cooking operation in the preset area based on the comparison between the detection signal and the reference cooking waveform. It can detect whether the user is operating the stove in front of the stove, and effectively reduce the situation in which the temperature of the temperature measuring probe at the bottom of the pot rises sharply in certain scenarios, causing the anti-dry-burn function to be mistakenly turned off.

[0065] Example 2

[0066] This embodiment provides a dry-burn prevention device in cooking, the dry-burn prevention device comprising:

[0067] A temperature sensor is used to obtain the temperature value of the stove;

[0068] The dry-burn determination module is used to detect whether there is a cooking operation in a preset area using the cooking operation detection device in Example 1 when the temperature value of the stove is greater than a preset temperature threshold; and if there is no cooking operation in the preset area, execute preset dry-burn prevention measures.

[0069] The dry-burn prevention device in cooking provided in this embodiment can detect whether the user is operating the stove in front of the stove by utilizing the above-mentioned cooking operation detection device, thereby effectively reducing the situation in which the temperature of the temperature measuring probe at the bottom of the pot rises sharply in certain scenarios, causing the dry-burn prevention function to be mistakenly shut down.

[0070] Example 3

[0071] Please refer to Figure 6 , which is a first flow chart of the cooking operation detection method in this embodiment. Specifically, Figure 6 As shown, the detection method comprises:

[0072] S101, obtaining a detection signal within a preset area;

[0073] S102: Determine whether there is a cooking operation in the preset area according to the detection signal and the historical cooking operation data.

[0074] Please refer to Figure 7 , which is a second flow chart of the cooking operation detection method in this embodiment. Specifically, Figure 7 As shown, before step S101, the detection method further includes:

[0075] S201, emitting infrared light to a preset area, and receiving infrared light reflected from the preset area;

[0076] S202: Collect the waveform of the reflected infrared light to obtain a detection signal.

[0077] Specifically, Figure 3 As shown, the infrared pair tube 3 can be arranged in the shielding structure 5 to achieve infrared light emission in a preset area and to receive infrared light reflected in the preset area. The shielding structure 5 has two openings facing the preset area, and the infrared pair tubes 3 are respectively arranged in the two openings. On the one hand, the shielding structure 5 serves to separate the infrared transmitting tube from the receiving tube, ensuring that the infrared receiving tube receives the infrared light emitted by the infrared transmitting tube and the infrared light emitted back by the target object in the preset area; on the other hand, the shielding structure 5 serves to adjust the direction of infrared light transmission and reception, which can ensure that the infrared light transmission and reception direction is obliquely upward, and can control the range in the left and right directions. Preferably, as Figure 4 As shown, the cooking operation detection device can be set on the panel of a cooking device such as a stove to detect the behavior of a target object within a preset distance and a preset range in front of the stove.

[0078] In this embodiment, the preset area includes the cooking area in front of the cooker, and the historical cooking operation data includes historical cooking operation waveform data; step S102 may include:

[0079] The detection signal is compared with a reference cooking waveform to obtain an operation stage of the cooking operation in a preset area; the reference cooking waveform is formed by fitting the historical cooking operation waveform data and is used to characterize at least one operation stage of the cooking operation.

[0080] Specifically, Figure 5As shown, a reference cooking waveform is obtained by collecting and fitting the infrared reflection waveforms generated by a large number of trial users' basic cooking actions. The reference cooking waveform represents at least one operation stage of the cooking operation. Figure 5 The reference cooking waveform in the algorithm includes four operation stages that appear in sequence, namely, the user approaches the cooker and ignites the cooker, adds cooking ingredients, stir-fries ingredients, and removes ingredients from the cooker. Each operation stage has different waveform characteristics. By comparing the detection signal with the reference cooking waveform, the operation stage of the cooking operation can be determined.

[0081] In an optional implementation, after step S101, the detection method further includes:

[0082] S203: Determine whether there is a cooking operation in the preset area according to whether the signal strength of the detection signal meets a preset signal strength threshold range.

[0083] Specifically, the signal strength of the detection signal can reflect whether there is a person in the preset area, and can further assist in determining whether there is a cooking operation. When the target object is close, the infrared light intensity sampling AD value received by the infrared receiving tube is large, and when the target object is far away, the infrared light intensity sampling AD value received by the infrared receiving tube is small. The infrared intensity threshold of the receiving tube can be pre-set according to historical data, and the mapping relationship between infrared intensity and distance can be used to determine whether there is a person in front of the cooker. For example, if the infrared intensity of the receiving tube is between the range a1 and a2, it means that the distance of the person is between A and B.

[0084] Preferably, the infrared intensity meets the set threshold range, and the detection signal meets the pre-stored cooking action waveform, which can be used as the judgment condition for detecting the cooking operation at the same time, further improving the accuracy of detecting the cooking operation. That is, when the conditions ① the infrared intensity meets the set threshold range, indicating that the user is within the detection range in front of the cooker; and the received infrared waveform meets the condition ② the user operation meets the pre-stored cooking action waveform; it is output that the user is detected in front of the cooker and is performing a cooking operation.

[0085] The cooking operation detection method provided in the present embodiment collects and fits the infrared reflection waveforms generated by the basic cooking actions of a large number of trial users to obtain a reference cooking waveform, obtains the detection signal in the preset area, and determines whether there is a cooking operation in the preset area based on the comparison between the detection signal and the reference cooking waveform. It can detect whether the user is operating the stove in front of the stove, and effectively reduce the situation in which the temperature of the temperature measuring probe at the bottom of the pot rises sharply in certain scenarios, causing the anti-dry-burn function to be mistakenly turned off.

[0086] Example 4

[0087] This embodiment provides a method for preventing dry burning in cooking, and the method for preventing dry burning includes:

[0088] Get the temperature value of the stove;

[0089] When the temperature value of the cooker is greater than the preset temperature threshold, the cooking operation detection method in Example 3 is used to detect whether there is a cooking operation in the preset area;

[0090] If not, execute the preset dry boil prevention measures.

[0091] The method for preventing dry burning during cooking provided in this embodiment can detect whether the user is operating the stove in front of the stove by utilizing the above-mentioned cooking operation detection device, thereby effectively reducing the situation in which the temperature of the temperature measuring probe at the bottom of the pot rises sharply in certain scenarios, causing the anti-dry burning function to be mistakenly turned off.

[0092] Example 5

[0093] Figure 8 This is a schematic diagram of the structure of an electronic device provided in Example 5 of the utility model. The electronic device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the program, the cooking operation detection method of Example 3 or the dry-burn prevention method in cooking of Example 4 is implemented. Figure 8 The electronic device 30 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0094] like Figure 8 As shown, the electronic device 30 may be in the form of a general-purpose computing device, for example, it may be a server device. The components of the electronic device 30 may include, but are not limited to: at least one processor 31, at least one memory 32, and a bus 33 connecting different system components (including the memory 32 and the processor 31).

[0095] The bus 33 includes a data bus, an address bus, and a control bus.

[0096] The memory 32 may include a volatile memory, such as a random access memory (RAM) 321 and / or a cache memory 322 , and may further include a read-only memory (ROM) 323 .

[0097] The memory 32 may also include a program / utility 325 having a set (at least one) of program modules 324, such program modules 324 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0098] The processor 31 executes various functional applications and data processing by running the computer programs stored in the memory 32, such as the cooking operation detection method of Example 3 of the utility model or the dry-burn prevention method in cooking of Example 4.

[0099] The electronic device 30 may also communicate with one or more external devices 34 (e.g., keyboards, pointing devices, etc.). Such communication may be performed via an input / output (I / O) interface 35. Furthermore, the model-generated device 30 may also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) via a network adapter 36. As shown, the network adapter 36 communicates with other modules of the model-generated device 30 via a bus 33. It should be understood that, although not shown in the figure, other hardware and / or software modules may be used in conjunction with the model-generated device 30, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (RAID) systems, tape drives, and data backup storage systems.

[0100] It should be noted that although several units / modules or sub-units / modules of the electronic device are mentioned in the above detailed description, this division is merely exemplary and not mandatory. In fact, according to the embodiments of the present invention, the features and functions of two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided into multiple units / modules to be embodied.

[0101] Example 6

[0102] This embodiment provides a computer-readable storage medium having a computer program stored thereon. When the program is executed by a processor, the cooking operation detection method of embodiment 3 or the dry-burn prevention method in cooking of embodiment 4 is implemented.

[0103] The readable storage medium may include but is not limited to: a portable disk, a hard disk, a random access memory, a read-only memory, an erasable programmable read-only memory, an optical storage device, a magnetic storage device or any suitable combination of the above.

[0104] In a possible implementation, the utility model can also be implemented in the form of a program product, which includes a program code. When the program product is run on a terminal device, the program code is used to enable the terminal device to execute the detection method for implementing the cooking operation of Example 3 or the dry-burn prevention method in cooking of Example 4.

[0105] Among them, the program code for executing the present invention can be written in any combination of one or more programming languages, and the program code can be executed completely on the user device, partially on the user device, as an independent software package, partially on the user device and partially on a remote device, or completely on the remote device.

[0106] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A cooking operation detection device, characterized in that: The detection device comprises: Infrared pair tubes, used to emit infrared light to a preset area and receive infrared light reflected by the preset area; A waveform processing module, used for collecting the waveform of the reflected infrared light to obtain a detection signal; The cooking operation determination module is used to determine whether there is a cooking operation in the preset area according to the detection signal and the historical cooking operation data.

2. The detection device according to claim 1, characterized in that The preset area includes a cooking area in front of the cooker.

3. The detection device according to claim 2, characterized in that: The infrared pair tubes are arranged in mutually isolated shielding structures, and the shielding structures include an opening facing the preset area.

4. A device for preventing dry burning in cooking, characterized in that: The dry burning prevention device comprises: A temperature sensor is used to obtain the temperature value of the stove; A dry-burn determination module is used to detect whether there is a cooking operation in a preset area using a cooking operation detection device as described in any one of claims 1 to 3 when the temperature value of the stove is greater than a preset temperature threshold; and if there is no cooking operation in the preset area, execute preset dry-burn prevention measures.

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