Refrigerator with odor detection function and detection method
By using an infrared spectral odor sensor to detect spoilage of food inside the refrigerator, the problem of incomplete detection in existing technologies has been solved, enabling accurate judgment and real-time feedback on the freshness of food, and improving recognition accuracy and sensor lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHANGHONG MEILING CO LTD
- Filing Date
- 2023-07-13
- Publication Date
- 2026-05-15
AI Technical Summary
Existing refrigerator odor sensors cannot detect the freshness of food in all aspects, and they are not adaptable to the complex and ever-changing refrigerator environment. Single volatile odor sensors have low recognition accuracy and cannot accurately identify combinations of gases.
Using an infrared spectral odor sensor, the gas composition and concentration in the refrigerator are detected. The selective absorption characteristics of infrared spectroscopy are used to identify the gas components and concentrations. Combined with model analysis, the type and degree of food spoilage are determined, and the results are fed back in real time through indicator lights and a display screen.
It achieves accurate identification of food spoilage inside the refrigerator, improves detection accuracy, reduces false judgments, extends sensor lifespan, and reduces sensor size through multi-optical-path design.
Smart Images
Figure CN116951861B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of refrigerator technology, and in particular to a refrigerator with odor detection function and a detection method thereof. Background Technology
[0002] Refrigerators typically store a variety of foods, including common fruits, vegetables, and meats, as well as leftovers. Over long periods, these foods gradually spoil. If not detected and cleaned promptly, microorganisms can multiply rapidly, causing other foods to rot. While spoilage releases characteristic gases, the concentration of these gases can indicate the freshness of food. However, due to the diverse food types and complex gas composition inside refrigerators, current odor sensors struggle to accurately detect these odors. This makes it difficult to pinpoint the source of the spoilage and promptly alert users to clean up any rotten food.
[0003] Currently, refrigerators typically have built-in optical sensors or odor sensors to detect changes in the internal environment, thereby determining the freshness of the food inside.
[0004] However, optical sensors have the disadvantage of not being able to detect the freshness of food in the refrigerator from all angles, nor can they take appropriate measures to deal with the complex and ever-changing environment in the refrigerator. While commonly used odor sensors on the market can detect the odor produced by the spoilage of food in the refrigerator, they are generally single volatile odor sensors, which have low accuracy in identifying characteristic spoilage odors and cannot accurately identify combinations of gases. Summary of the Invention
[0005] This application provides a refrigerator with odor detection function and a detection method to solve the shortcomings of existing refrigerators with odor detection function, which are that optical sensors cannot detect the freshness of food in the refrigerator from all angles, nor can they take corresponding measures for the complex and ever-changing environment in the refrigerator. Although commonly used odor sensors on the market can detect the odor produced by the spoilage of food in the refrigerator, they are generally single volatile odor sensors, which have low recognition accuracy for characteristic spoilage odors and cannot achieve accurate recognition of combined gases.
[0006] The first aspect of this application provides a refrigerator with an odor detection function, applied to the refrigerator's cold compartment. The cold compartment includes: a cabinet and a door rotatably connected to the cabinet, comprising:
[0007] An odor sensor is connected to the door and is located on one side near the cabinet.
[0008] A food freshness indicator light is connected to the cabinet body and is located on one side opposite the door.
[0009] The odor sensor includes:
[0010] A housing having at least one vent hole.
[0011] A fruit and vegetable spoilage indicator light is connected to the housing.
[0012] A meat spoilage indicator light, which is connected to the housing;
[0013] A sensing module, disposed within the housing, is used to detect the composition and concentration of the gas inside the refrigerator compartment. Based on the composition of the gas, it determines whether there are characteristic gas components of food spoilage in the gas composition. If so, it determines the type of food that has spoiled based on the gas composition, and determines the degree of spoilage based on the concentration of the characteristic gas of food spoilage. The types of spoiled food include: fruit and vegetable spoilage and meat spoilage.
[0014] A control module is disposed within the housing. The control module is communicatively connected to the food freshness indicator, the fruit and vegetable spoilage indicator, the meat spoilage indicator, and the sensor module. It is configured to control at least one of the food freshness indicator, the fruit and vegetable spoilage indicator, and the meat spoilage indicator to light up based on the type information of the spoiled food and the degree of spoilage of the food.
[0015] In some embodiments, the refrigerator with odor detection function further includes:
[0016] The display screen is connected to the door and is located on the side away from the cabinet. The display screen is equipped with a food spoilage warning light, which is electrically connected to the control module and is used to display whether the food in the refrigerator is spoiled and the type of spoiled food.
[0017] In some embodiments, the odor sensor further includes:
[0018] A communication module, which is communicatively connected to the sensing module, is configured to store information about the type of food that has spoiled and the degree of spoilage of the food, and to send the information about the type of food that has spoiled and the degree of spoilage of the food to a receiving end; the receiving end is an electronic device capable of receiving information.
[0019] In some embodiments, the odor sensor further includes:
[0020] A working indicator light is connected to the housing.
[0021] In some embodiments, the food freshness indicator light includes: a fruit and vegetable freshness indicator light and a meat freshness indicator light; the fruit and vegetable freshness indicator light is used to display the degree of spoilage of the fruit and vegetables, and the meat freshness indicator light is used to display the degree of spoilage of the fruit and vegetables.
[0022] In some embodiments, the sensing module includes:
[0023] The detection unit is configured to detect the composition and concentration of the gas inside the refrigerator compartment;
[0024] The first judgment unit is communicatively connected to the detection unit and is configured to determine whether there are characteristic gas components of food spoilage in the gas composition. If so, food spoilage exists in the refrigerator. The type of food that has spoiled is determined based on the gas composition.
[0025] The second judgment unit, which is communicatively connected to the first judgment unit, is configured to determine the degree of spoilage of the food based on the characteristic gas concentration of the spoiled food.
[0026] In some embodiments, the control module includes:
[0027] The first acquisition unit is configured to acquire information about the type of food that has spoiled and the degree of spoilage of the food.
[0028] A first control unit, which is communicatively connected to the first acquisition unit, is configured to control at least one of the fruit and vegetable spoilage indicator lights and the meat spoilage indicator lights to light up based on the type information of the spoiled food.
[0029] The second control unit, which is communicatively connected to the first acquisition unit, is configured to control the freshness indicator light of the food to illuminate based on the spoilage information of the food.
[0030] In some embodiments, the communication module includes:
[0031] The second acquisition unit is configured to acquire information about the type of food that has spoiled and the degree of spoilage of the food.
[0032] A storage unit, which is communicatively connected to the second acquisition unit, is configured to store information about the type of the spoiled food and the degree of spoilage of the food.
[0033] The sending unit is communicatively connected to the second acquisition unit and is configured to send information about the type of the spoiled food and the degree of spoilage of the food to the receiving end.
[0034] The second aspect of this application provides a detection method for a refrigerator with odor detection function, applied to a refrigerator with odor detection function as described in any one of the first aspects above, comprising:
[0035] To obtain the composition and concentration of the gas inside the refrigerator compartment;
[0036] Based on the composition of the gas, determine whether there are characteristic gas components of food spoilage in the gas composition. If so, then there is food spoilage in the refrigerator, and determine the type of food that has spoiled based on the gas composition.
[0037] The degree of spoilage of the food is determined based on the concentration of characteristic gases indicating spoilage; the types of spoiled food include: spoiled fruits and vegetables and spoiled meat.
[0038] Based on the information about the type of food that has spoiled and the degree of spoilage, at least one of the following lights—the food freshness indicator, the fruit and vegetable spoilage indicator, and the meat spoilage indicator—is controlled to illuminate.
[0039] In some embodiments, the detection method for a refrigerator with odor detection function further includes:
[0040] The information on the type of food that has spoiled and the degree of spoilage is sent to the receiving end; the receiving end is an electronic device capable of receiving information.
[0041] This application provides a refrigerator with odor detection function and a detection method, applied to the refrigerator compartment. The refrigerator compartment includes: a cabinet and a door rotatably connected to the cabinet. The refrigerator compartment includes: an odor sensor connected to the door and positioned near the cabinet; a food freshness indicator light connected to the cabinet and positioned opposite the door; the odor sensor includes: a housing with at least one vent; a fruit and vegetable spoilage indicator light connected to the housing; a meat spoilage indicator light connected to the housing; and a sensing module for detecting the composition and concentration of gas in the refrigerator compartment, and determining whether characteristic gas components of food spoilage are present in the gas composition. If so, the module further determines... The system identifies the type of food that has spoiled and determines the degree of spoilage based on the concentration of characteristic gases associated with the spoilage. The types of spoiled food include spoiled fruits and vegetables and spoiled meat. A control module is configured to illuminate at least one of the following indicators based on the type and degree of spoilage: food freshness indicator, fruit and vegetable spoilage indicator, and meat spoilage indicator. This addresses the shortcomings of current odor detection refrigerators, where optical sensors cannot comprehensively detect the freshness of food and cannot adapt to the complex and changing environment. While commonly used odor sensors can detect the odors produced by spoiled food, they are generally single-volatile odor sensors with low accuracy in identifying characteristic spoilage odors and cannot accurately identify combinations of gases. Attached Figure Description
[0042] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0043] Figure 1 This is a schematic diagram of the structure of a refrigerator with odor detection function according to this application;
[0044] Figure 2 This is a schematic diagram of the odor sensor in this application;
[0045] Figure 3 This is a schematic diagram of the structure of the food freshness indicator light in this application;
[0046] Figure 4 This is a schematic diagram of the display screen structure in this application;
[0047] Figure 5This is a schematic diagram of the internal structure of the odor sensor in this application.
[0048] Explanation of reference numerals in the attached figures:
[0049] 1-Refrigerator compartment; 11-Cabinet body; 12-Door; 2-Odor sensor; 21-Shell; 211-Air vent; 22-Fruit and vegetable spoilage indicator light; 23-Meat spoilage indicator light; 24-Sensing module; 241-Detection unit; 242-First judgment unit; 243-Second judgment unit; 25-Control module; 251-First acquisition unit; 252-First control unit; 253-Second control unit; 26-Communication module; 261-Second acquisition unit; 262-Storage unit; 263-Sending unit; 27-Working indicator light; 3-Food freshness indicator light; 31-Fruit and vegetable freshness indicator light; 32-Meat freshness indicator light; 4-Display screen; 41-Food spoilage warning light. Detailed Implementation
[0050] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of this application.
[0051] Because some technologies using optical sensors in refrigerators with odor detection functions have drawbacks, they cannot detect the freshness of food in the refrigerator from all angles, nor can they take appropriate measures to address the complex and ever-changing environment inside the refrigerator. While commonly used odor sensors can detect the odors produced by spoiled food in the refrigerator, they are generally single-volatile odor sensors, with low accuracy in identifying characteristic spoiled odors and unable to accurately identify combinations of gases. To solve this technical problem, this application provides a refrigerator with odor detection function and a detection method. The refrigerator with odor detection function and the detection method are described below:
[0052] Depend on Figure 1 and Figure 5As can be seen, the first aspect of this application provides a refrigerator with an odor detection function, applied to the refrigerator compartment 1. The refrigerator compartment 1 includes: a cabinet 11 and a door 12 rotatably connected to the cabinet 11. It includes: an odor sensor 2, which is connected to the door 12 and positioned near the cabinet 11; the odor sensor 2 is an infrared spectral odor sensor, based on the selective absorption characteristics of different gas molecules' infrared spectra, using the relationship between gas concentration and absorption intensity (Lambert-Beer law) to identify gas components and concentrations. It collects spectral data within the refrigerator compartment 1 and determines the type and concentration of the detected gas based on model analysis; the model establishment process is as follows: data is first collected through the odor sensor 2, then the spectral data is cleaned, and then spectral preprocessing is used to optimize the spectral model; a food freshness indicator 3, connected to the cabinet 11 and positioned relative to the door 12; the food freshness indicator 3 is used to display the degree of spoilage of food in the refrigerator compartment 1.
[0053] Depend on Figure 2 It is known that the odor sensor 2 includes: a housing 21, on which at least one vent 211 is provided; a fruit and vegetable spoilage indicator light 22, which is connected to the housing 21; the fruit and vegetable spoilage indicator light 22 is yellow when lit, and has a fruit and vegetable pattern below it; the lit fruit and vegetable spoilage indicator light 22 indicates that the fruit and vegetable food in the refrigerator compartment 1 has spoiled; a meat spoilage indicator light 23, which is connected to the housing 21; the meat spoilage indicator light 23 is red, and has a meat pattern below it; the lit meat spoilage indicator light 23 indicates that the meat food in the refrigerator compartment 1 has spoiled; and a sensing module 24, which is disposed inside the housing 21 and is used to detect the composition and concentration of the gas in the refrigerator compartment 1. Based on the composition of the gas, it is determined whether there are characteristic gas components of food spoilage in the gas composition. If so, the type of food spoiled is determined based on the gas composition, and the degree of spoilage is determined based on the concentration of the characteristic gas of food spoilage. The types of food spoiled include: fruit and vegetable spoilage and meat spoilage. The control module 25 is disposed in the housing 21. The control module 25 is communicatively connected to the food freshness indicator 3, fruit and vegetable spoilage indicator 22, meat spoilage indicator 23 and the sensing module 24. It is configured to control at least one of the food freshness indicator 3, fruit and vegetable spoilage indicator 22 and meat spoilage indicator 23 to light up according to the information of the type of food spoiled and the degree of spoilage of the food.
[0054] Depend on Figure 4As can be seen, the refrigerator with odor detection function is characterized by further comprising: a display screen 4, which is connected to the door 12 and located on the side away from the refrigerator body 11; the display screen 4 is equipped with a food spoilage warning light 41, which is electrically connected to the control module 25 and is used to display whether the food in the refrigerator compartment 1 is spoiled and the type of spoiled food. The food spoilage warning light 41 is elongated, with a yellow light on the left and a red light on the right. Below the corresponding color indicator light are illustrations of fruits, vegetables, and meats. If the fruits and vegetables are spoiled, the left food spoilage warning light 41 lights up and displays yellow; if the meat is spoiled, the right food spoilage warning light 41 lights up and displays red. The display screen 4 allows the user to more clearly observe whether the food in the refrigerator compartment 1 is spoiled and the type of spoiled food without opening the refrigerator.
[0055] Depend on Figure 5 It is understood that the odor sensor 2 further includes a communication module 26, which is communicatively connected to the sensing module 24 and is configured to store information about the type of food that has spoiled and the degree of spoilage of the food, and to send the information about the type of food that has spoiled and the degree of spoilage of the food to a receiving end; the receiving end is an electronic device capable of receiving information, such as a Bluetooth device like a mobile phone.
[0056] Depend on Figure 2 As can be seen, the odor sensor 2 also includes a working indicator light 27, which is connected to the housing 21. The working indicator light 27 is used to indicate whether the odor sensor 2 is in working condition. When the working indicator light 27 is lit, the odor sensor 2 is in working condition; when the working indicator light 27 is off, it indicates that the odor sensor 2 has malfunctioned and needs to be repaired by a maintenance person. This prevents users from mistakenly believing that the food in the refrigerator compartment 1 has not spoiled when they are unaware that the odor sensor 2 is damaged, thus affecting the user's dietary health.
[0057] Depend on Figure 3It is understood that the food freshness indicator light 3 includes: a fruit and vegetable freshness indicator light 31 and a meat freshness indicator light 32; the fruit and vegetable freshness indicator light 31 is used to display the degree of spoilage of fruits and vegetables, and the meat freshness indicator light 32 is used to display the degree of spoilage of fruits and vegetables. The fruit and vegetable freshness indicator light 31 is located on the left side of the food freshness indicator light 3, and the meat freshness indicator light 32 is located on the right side of the food freshness indicator light 3; according to the detection result of the odor sensor 2, if the fruit and vegetable is spoiled, the fruit and vegetable freshness indicator light 31 lights up and displays yellow; if the meat is spoiled, the meat freshness indicator light 32 lights up and displays red; otherwise, it does not display; the number of lit bulbs in the fruit and vegetable freshness indicator light 31 and the meat freshness indicator light 32 indicates the freshness of the fruit, vegetable, or meat.
[0058] Depend on Figure 5 It is known that the sensing module 24 includes: a detection unit 241, configured to detect the composition and concentration of the gas in the refrigerator compartment 1; the detection unit 241 irradiates the gas in the refrigerator compartment 1 with infrared spectrum and analyzes and determines the composition and concentration of the gas through an algorithm model; a first judgment unit 242, which is communicatively connected to the detection unit 241, configured to determine whether there are characteristic gas components of food spoilage in the gas composition; if so, food spoilage exists in the refrigerator compartment 1, and the type of food spoiled is determined based on the gas composition; and a second judgment unit 243, which is communicatively connected to the first judgment unit 242, configured to determine the degree of food spoilage based on the characteristic gas concentration of food spoilage.
[0059] Depend on Figure 5 It is understood that the control module 25 includes: a first acquisition unit 251, configured to acquire information about the type of the spoiled food and the degree of spoilage of the food; a first control unit 252, which is communicatively connected to the first acquisition unit 251, and configured to control at least one of the fruit and vegetable spoilage indicator lights 22 and the meat spoilage indicator lights 23 to light up according to the information about the type of the spoiled food; and a second control unit 253, which is communicatively connected to the first acquisition unit 251, and configured to control the food freshness indicator light 3 to light up according to the information about the degree of spoilage of the food.
[0060] Depend on Figure 5It is understood that the communication module 26 includes: a second acquisition unit 261, configured to acquire information about the type of spoiled food and the degree of spoilage of the food; a storage unit 262, which is communicatively connected to the second acquisition unit 261 and configured to store the information about the type of spoiled food and the degree of spoilage of the food; the storage unit 262 is used to store information about the type of spoiled food and the degree of spoilage of the food in the refrigerator 1 within the past month, and the user can view the information stored in the storage unit 262 through the receiving end; and a sending unit 263, which is communicatively connected to the second acquisition unit 261 and configured to send the information about the type of spoiled food and the degree of spoilage of the food to the receiving end.
[0061] This application provides a refrigerator with odor detection function and a detection method. An infrared spectral odor sensor inside the refrigerator compartment 1 detects the gas composition within the compartment, enabling timely detection of spoilage odors from food and providing real-time feedback to the consumer. This allows for timely reminders to clean up spoiled food, thus ensuring the consumer's healthy eating habits. Compared to traditional single-odor sensors, the infrared spectral odor sensor offers higher recognition accuracy. Furthermore, traditional single-odor sensors often rely on a combination of semiconductors and electrochemical methods, which can lead to cross-response issues and prevent the identification of mixed gases. The infrared spectral odor sensor, however, can accurately detect spoilage gases in mixed gases through optimized data modeling. Additionally, the accuracy of traditional single-odor sensors decreases over time, a problem avoided by the infrared spectral odor sensor, thus extending the lifespan of the refrigerator with odor detection function. To reduce overall size, the infrared spectral odor sensor in this application utilizes a multi-path sample absorption chamber design, extending the infrared spectrum's illumination of the gas components within the compartment through multiple optical path reversals. This significantly reduces the overall size without compromising detection accuracy.
[0062] The second aspect of this application provides a detection method for a refrigerator with odor detection function, applied to a refrigerator with odor detection function as described in any of the above embodiments, comprising: acquiring the composition and concentration of gas in the refrigerator compartment; odor sensor 2 using infrared spectroscopy to irradiate volatile organic compounds in the air of the refrigerator compartment and analyzing the absorption peaks of different hydrogen-containing functional groups; analyzing and processing the data results of the above detection, then calling a data model and analyzing the composition and concentration of gas in the compartment according to the model; based on the composition of the gas, determining whether there are characteristic gas components of food spoilage in the gas composition; if so, food spoilage exists in the refrigerator compartment, and determining the type of food spoiled based on the gas composition; determining the degree of food spoilage based on the concentration of characteristic gas of food spoilage; the type of food spoilage includes: fruit and vegetable spoilage and meat spoilage; according to the information on the type of food spoilage and the degree of food spoilage, controlling at least one of the food freshness indicator, fruit and vegetable spoilage indicator, and meat spoilage indicator to light up. The effects of the above method during execution can be seen in the above system embodiments, and will not be repeated here.
[0063] In this embodiment, the detection method for a refrigerator with odor detection function further includes: sending information about the type of the spoiled food and the degree of spoilage to a receiving end; the receiving end is an electronic device capable of receiving information. The effects of the above method during execution can be found in the above system embodiment, and will not be repeated here.
[0064] An embodiment of a refrigerator with odor detection function and a detection method provided in this application, applied in practical use: A user stores food in the refrigerator's crisper compartment 1. The odor sensor 2 emits an infrared spectrum through an internal light source. The light source undergoes multiple reflections within the crisper compartment. The infrared spectrum interacts with volatile gases containing hydrogen groups in the air, resulting in spectral absorption. The sensing module 24 receives the signal spectrum (infrared absorption spectrum) and analyzes it using an algorithm model to determine the composition (type and content) of the volatile gases. It analyzes whether characteristic gas components indicating food spoilage exist in the crisper compartment 1. If present, it determines the type and degree of spoilage based on the detected gas's composition and concentration. The analysis results are transmitted to the control module 25 to control the fruit and vegetable spoilage indicator 22, the meat spoilage indicator 23, the food freshness indicator 3, and the food spoilage warning light 41. At least one light in the room is lit, and the information is transmitted to the receiving end. If the fruits and vegetables in the room are rotting, the odor sensor 1 detects the characteristic gas produced by the rotting. The degree of rotting is then analyzed based on the detected concentration. If slight rotting begins, the left quarter of the circular indicator light 31 of the freshness indicator 3 emits a yellow light. As the degree of rotting increases, the proportion of the circular indicator light 3 illuminates further, thus indicating the degree of rotting in the room. If meat is rotting, the same logic applies to the display. Different colored lights are displayed simultaneously on the fruit and vegetable rotting indicator 22, the meat rotting indicator 23, the food rotting warning light 41, and the receiving end to indicate the rotting status of fruits and vegetables and meat, respectively, using yellow and red lights to alert the user.
[0065] The above detailed embodiments further illustrate the purpose, technical solution, and beneficial effects of the embodiments of this application. It should be understood that the above are merely specific embodiments of the embodiments of this application and are not intended to limit the protection scope of the embodiments of this application. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solutions of the embodiments of this application should be included within the protection scope of the embodiments of this application.
Claims
1. A refrigerator with odor detection function, applied to the refrigerator compartment (1), the refrigerator compartment (1) comprising: The housing (11) and the door (12) rotatably connected to the housing (11) are characterized in that they include: Odor sensor (2), which is connected to the door (12) and is located on the side close to the box (11); Food freshness indicator (3), which is connected to the box body (11) and is located on one side relative to the door body (12); The odor sensor (2) includes: The housing (21) is provided with at least one vent (211); Fruit and vegetable spoilage indicator light (22), which is connected to the housing (21); Meat spoilage indicator light (23), which is connected to the housing (21); The sensing module (24) is disposed inside the housing (21) and is used to detect the composition and concentration of the gas in the refrigerator compartment (1). Based on the composition of the gas, it determines whether there are characteristic gas components of food spoilage in the gas composition. If so, it determines the type of food that has spoiled based on the gas composition and determines the degree of food spoilage based on the concentration of characteristic gas of food spoilage. The types of food that have spoiled include: fruit and vegetable spoilage and meat spoilage. A control module (25) is disposed inside the housing (21). The control module (25) is communicatively connected to the food freshness indicator (3), the fruit and vegetable spoilage indicator (22), the meat spoilage indicator (23), and the sensor module (24). It is configured to control at least one of the food freshness indicator (3), the fruit and vegetable spoilage indicator (22), and the meat spoilage indicator (23) to light up based on the type of food that has spoiled and the degree of spoilage of the food. The control module (25) includes: The first acquisition unit (251) is configured to acquire information about the type of food that has spoiled and the degree of spoilage of the food. The first control unit (252) is communicatively connected to the first acquisition unit (251) and is configured to control at least one of the fruit and vegetable spoilage indicator lights (22) and the meat spoilage indicator lights (23) to light up according to the type information of the spoiled food. The second control unit (253) is communicatively connected to the first acquisition unit (251) and is configured to control the freshness indicator light (3) of the food to light up according to the spoilage information of the food. The odor sensor (2) further includes a communication module (26), which includes: The second acquisition unit (261) is configured to acquire information about the type of food that has spoiled and the degree of spoilage of the food. The storage unit (262) is communicatively connected to the second acquisition unit (261) and is configured to store information about the type of the spoiled food and the degree of spoilage of the food. The sending unit (263) is communicatively connected to the second acquisition unit (261) and is configured to send the information of the type of the spoiled food and the degree of spoilage of the food to the receiving end. The control module is configured as follows: To obtain the composition and concentration of the gas inside the refrigerator compartment; Based on the composition of the gas, determine whether there are characteristic gas components of food spoilage in the gas composition. If so, then there is food spoilage in the refrigerator, and determine the type of food that has spoiled based on the gas composition. The degree of spoilage of the food is determined based on the concentration of characteristic gases indicating spoilage; the types of spoiled food include: spoiled fruits and vegetables and spoiled meat. Based on the information about the type of food that has spoiled and the degree of spoilage, at least one of the following lights—the food freshness indicator, the fruit and vegetable spoilage indicator, and the meat spoilage indicator—is controlled to illuminate.
2. A refrigerator with odor detection function according to claim 1, characterized in that, Also includes: The display screen (4) is connected to the door (12) and is located on the side away from the cabinet (11). The display screen (4) is equipped with a food spoilage warning light (41), which is electrically connected to the control module (25) and is used to display whether the food in the refrigerator (1) is spoiled and the type of spoiled food.
3. A refrigerator with odor detection function according to claim 1, characterized in that, The communication module (26) is communicatively connected to the sensing module (24) and is configured to store information about the type of food that has spoiled and the degree of spoilage of the food, and to send the information about the type of food that has spoiled and the degree of spoilage of the food to the receiving end; the receiving end is an electronic device capable of receiving information.
4. A refrigerator with odor detection function according to claim 1, characterized in that, The odor sensor (2) also includes: A working indicator light (27) is connected to the housing (21).
5. A refrigerator with odor detection function according to claim 1, characterized in that, The food freshness indicator (3) includes: a fruit and vegetable freshness indicator (31) and a meat freshness indicator (32); the fruit and vegetable freshness indicator (31) is used to display the degree of spoilage of the fruit and vegetables, and the meat freshness indicator (32) is used to display the degree of spoilage of the fruit and vegetables.
6. A refrigerator with odor detection function according to claim 1, characterized in that, The sensing module (24) includes: The detection unit (241) is configured to detect the composition and concentration of the gas in the refrigerator compartment (1); The first judgment unit (242) is communicatively connected to the detection unit (241) and is configured to determine whether there are characteristic gas components of food spoilage in the gas composition. If so, food spoilage occurs in the cold storage room (1), and the type of food spoilage is determined based on the gas composition. The second judgment unit (243) is communicatively connected to the first judgment unit (242) and is configured to judge the degree of spoilage of the food based on the characteristic gas concentration of the food spoilage.
7. A detection method for a refrigerator with odor detection function, applied to a refrigerator with odor detection function as described in any one of claims 1 to 6, characterized in that, include: To obtain the composition and concentration of the gas inside the refrigerator compartment; Based on the composition of the gas, determine whether there are characteristic gas components of food spoilage in the gas composition. If so, then there is food spoilage in the refrigerator, and determine the type of food that has spoiled based on the gas composition. The degree of spoilage of the food is determined based on the concentration of characteristic gases indicating food spoilage. The types of rotten food included: rotten fruits and vegetables and rotten meat; Based on the information about the type of food that has spoiled and the degree of spoilage, at least one of the following lights—the food freshness indicator, the fruit and vegetable spoilage indicator, and the meat spoilage indicator—is controlled to illuminate.
8. The detection method for a refrigerator with odor detection function according to claim 7, characterized in that, Also includes: The information on the type of food that has spoiled and the degree of spoilage is sent to the receiving end. The receiving end is an electronic device capable of receiving information.