Digital refrigerator system and operation method thereof

Abstract

The invention discloses a digital refrigerator system and an operation method thereof, and relates to the technical field of intelligent electrical appliances, the digital refrigerator system comprises a refrigerator body, a central processing unit, an intelligent sensor network module, a network communication module, a user interaction interface and a power management module, the refrigerating chamber and the freezing chamber are each internally provided with a temperature sensor, a humidity sensor, a weight sensor and a camera, and the central processing unit comprises an RFID radio frequency card reading module, an alarm module and a single-chip microcomputer. According to the system, various sensors are arranged in the refrigerating chamber and the freezing chamber, and the data analyzing and processing function of the central processing unit is combined, so that the system can accurately master the stock condition of food materials in the refrigerator in real time, and then the central processing unit can accurately judge whether the food materials are sufficient or not and whether replenishment is needed or not according to preset rules; according to the refrigerator, the user can clearly know the food material reserve in the refrigerator body, refined food material management is achieved, and life convenience is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent electrical appliances, and in particular to a digital refrigerator system and an operating method thereof. Background Art

[0002] In today's society, with the rapid development of science and technology and the significant improvement of people's living standards, smart home products have gradually entered thousands of households, bringing many conveniences to people's daily lives. As an indispensable electrical appliance in family life, the functions of refrigerators are no longer limited to traditional refrigeration and freezing of food. Consumers have higher and higher expectations for refrigerators, and prefer to have multifunctional digital refrigerator systems with intelligent management, convenient interaction, and efficient food preservation.

[0003] Although some existing refrigerators can sense changes in food inventory to a certain extent, they rarely automatically generate replenishment lists based on inventory conditions and connect with external e-commerce platforms or suppliers to complete the ordering process. Users still need to manually count the ingredients they need and then purchase them online or offline, which is cumbersome and time-consuming. It cannot meet people's pursuit of convenient life in the fast-paced modern life. In addition, traditional refrigerators lack effective food inventory monitoring methods and mostly rely on users' manual memory or rough viewing, making it difficult to accurately know the specific amount of food remaining. Although some refrigerators are equipped with simple weight sensing functions, they are often not accurate enough and cannot comprehensively combine other attributes of the food for comprehensive judgment, resulting in large errors in judging whether the food is sufficient and when it needs to be replenished, and refined food management cannot be achieved.

[0004] Therefore, in order to solve the above technical problems, the present invention provides a new digital refrigerator system. Summary of the invention

[0005] In order to achieve the above object, the present invention is achieved through the following technical solutions:

[0006] A digital refrigerator system and an operating method thereof, comprising:

[0007] A refrigerator body, wherein the refrigerator body includes a refrigerating chamber and a freezing chamber, and the refrigerating chamber and the freezing chamber are both provided with a temperature sensor, a humidity sensor, a weight sensor and a camera;

[0008] The central processing unit includes an RFID card reader module, an alarm module and a single-chip microcomputer. The central processing unit is used to receive sensor data, perform data analysis, processing and decision-making, and determine whether the food inventory is sufficient and whether replenishment is needed according to preset rules and algorithms;

[0009] An intelligent sensor network module, the intelligent sensor network module is used to monitor the internal environmental parameters of the refrigerator body and the internal environmental parameters and the duration of the fresh-keeping period of different food ingredients in real time and provide feedback, the intelligent sensor network module is composed of a plurality of sensor data acquisition modules, the plurality of sensor data acquisition modules are responsible for monitoring the internal environmental parameters of the refrigerator body and the internal environmental parameters and the duration of the fresh-keeping period of different food ingredients and provide feedback, and the plurality of intelligent sensor data are transmitted to the central processing unit via wired or wireless means;

[0010] A network communication module, which includes a wireless communication module, is responsible for connecting to the Internet, sending the replenishment list to the e-commerce platform or designated supplier, automatically completing the order process, and receiving feedback from the external system;

[0011] A user interaction interface, which is used to display the internal status of the refrigerator body and replenishment progress information. The user interaction interface includes a touch screen, a display screen and a data storage module, and notifies the user through a mobile phone APP or SMS;

[0012] The power management module is used to provide a stable power supply for the entire system to ensure the normal operation of each component.

[0013] Further preferably, the sensor data acquisition module includes a temperature and humidity sensor, and the temperature and humidity sensor is used to collect temperature and humidity data inside the refrigerator body in real time;

[0014] A weight sensor is provided inside the refrigerator and freezer compartments, and a storage compartment is installed at the bottom of the storage compartment. The weight sensor is used to detect weight changes of items stored inside the storage compartment.

[0015] Further preferably, the temperature sensor, humidity sensor, weight sensor and camera are connected to the input pin of the single-chip microcomputer through either analog output or digital output, and the collected data is transmitted to the central processing unit in real time.

[0016] Further preferably, the display screen uses either OLED or LCD to display the temperature, humidity, and remaining item quantity information inside the refrigerator body in real time, and the display screen communicates with the single-chip microcomputer via IIC and SPI buses.

[0017] Further preferably, the data storage module stores the collected data locally via an SD card or a built-in Flash memory, and sends the data to a cloud server for remote storage via Wi-Fi, Bluetooth, or wireless communication.

[0018] Further preferably, the wireless communication module is any one of an ESP8266 Wi-Fi module, an ESP32 Wi-Fi module or a Bluetooth module connected to a mobile phone APP or a cloud server, and the wireless communication module communicates with the microcontroller through a UART serial port to receive and send data.

[0019] Further preferably, the RFID radio frequency card reader module supports multiple RFID card modules to simulate the identification of different items, records the name, quantity, and shelf life information of the corresponding items, and the RFID card swiping module uses the SPI bus or IIC bus to communicate with the microcontroller, and sends the identified information to the microcontroller for processing.

[0020] Further preferably, the alarm module includes a buzzer and an LED indicator light, which are connected to the single-chip microcomputer via a GPIO pin, and the working state of the alarm module is controlled by the single-chip microcomputer.

[0021] Further preferably, the power management module includes a step-down circuit and a rectifier circuit to convert the input alternating current into direct current required by the system.

[0022] An operating method of a digital refrigerator system specifically includes the following steps:

[0023] S1. The refrigerator system is powered on and initialized, including hardware self-test and network connection test. After the initialization is completed, if the system enters the standby state, it will wait for user operation or automatically execute the replenishment task;

[0024] S2. The user interacts with the refrigerator through a mobile phone app or voice assistant and inputs replenishment requirements;

[0025] S3, the refrigerator system receives the user's instruction, parses and confirms the replenishment demand, including the product name, quantity, and delivery time;

[0026] S4, the refrigerator system detects the current inventory status through built-in sensors or RFID technology;

[0027] S5. Based on the user's replenishment demand and current inventory situation, the system generates a replenishment request and sends it to the cloud server;

[0028] S6. The cloud server receives the replenishment request sent by the refrigerator system, optimizes the replenishment plan based on the user's historical purchase records and preference information, and generates an order. The cloud server sends the order information to the supplier or logistics platform for commodity procurement and delivery preparation;

[0029] S7. The supplier receives the order information, purchases and packs the goods. The logistics platform receives the delivery task and arranges the delivery personnel to deliver the goods. The delivery personnel deliver the goods to the user's home at the agreed time and place.

[0030] S8. The refrigerator system receives the notification of delivery completion and updates the inventory information. The refrigerator system feeds back the replenishment results to the user, including replenishment success, delivery time, and delivery person information. The user can view the replenishment results through the mobile phone APP or voice assistant, and confirm or raise objections.

[0031] Compared with the prior art, the present invention has the following advantages: by arranging a variety of sensors inside the refrigerator and the freezer, and combining the data analysis and processing function of the central processing unit, the system can grasp the inventory status of the food in the refrigerator in real time and accurately, and then the central processing unit can accurately judge whether the food is sufficient and whether it needs to be replenished according to the preset rules, so that the user can clearly know the food reserves in the refrigerator body, avoid repeated purchases or waste of expired food due to forgetting the inventory of food, realize refined food management, improve the convenience of life, and meet people's pursuit of convenient life in modern fast-paced life. The Internet is connected through the network communication module. When the system determines that replenishment is needed, it can automatically send the replenishment list to the e-commerce platform or the designated supplier and complete the order process, which greatly saves the user's time and energy. The user no longer needs to manually record, check the required ingredients and perform shopping operations, thereby effectively reducing the burden of life and realizing refined food management. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a flow chart of this embodiment;

[0033] Figure 2 This is a schematic diagram of the present embodiment. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1 to Figure 2 The present invention is further described in detail.

[0035] A digital refrigerator system includes a refrigerator body, wherein the refrigerator body includes a refrigerator compartment and a freezer compartment. Furthermore, other storage spaces are provided inside the refrigerator body, and both the refrigerator compartment and the freezer compartment are provided with temperature sensors, humidity sensors, weight sensors and cameras. Furthermore, the coordinated use of the camera and other sensors enables a user to understand the status of food in the refrigerator from multiple dimensions. For example, the camera is used to check whether there is any abnormality in the appearance of the food, and the freshness of the food is comprehensively judged in combination with data such as weight changes, so that the user can promptly know and deal with food that is about to expire or has spoiled, thereby further optimizing the use and management of food.

[0036] The central processing unit includes an RFID radio frequency card reader module, an alarm module and a single-chip microcomputer. The central processing unit is used to receive sensor data, perform data analysis, processing and decision-making, and judge whether the food inventory is sufficient and whether replenishment is needed according to preset rules and algorithms. Exemplarily, the single-chip microcomputer is an STM32 series single-chip microcomputer as the core controller, which is responsible for data processing and logic control of the overall system and coordinates the work of each module. Furthermore, if replenishment is needed, the central processing unit generates a replenishment list, including the name, quantity and specification information of the required ingredients.

[0037] Intelligent sensor network module, the intelligent sensor network module is composed of multiple sensor data acquisition modules, which are responsible for monitoring the internal environmental parameters of the refrigerator body and the internal environmental parameters and the length of the freshness period of different ingredients and providing feedback. Multiple intelligent sensor data are transmitted to the central processing unit via wired or wireless means. The intelligent sensor network module is used to monitor the internal environmental parameters of the refrigerator body and the internal environmental parameters and the length of the freshness period of different ingredients in real time and provide feedback, and transmit the data to the central processing unit.

[0038] Furthermore, the user purchases fresh ingredients and puts them into the refrigerator body. The intelligent sensor network module monitors the ingredients and provides feedback to the central processing unit. For example, green leafy vegetables tend to have a shorter shelf life under normal conditions due to their higher water content and relatively active cellular respiration. Root vegetables have a relatively longer shelf life due to their relatively compact structure and slower water loss. Furthermore, the intelligent sensor network module monitors each ingredient placed therein in real time, thereby obtaining various parameters of the environment in which the ingredients are located and subtle changes in the food's own state in real time. The intelligent sensor network module then performs in-depth analysis through algorithms, and accurately determines the remaining shelf life of each ingredient according to the pre-set shelf life model and the actual current state changes.

[0039] The network communication module includes a wireless communication module, which is responsible for connecting to the Internet, sending the replenishment list to the e-commerce platform or designated supplier, automatically completing the order process, and receiving feedback from the external system. Further, it receives order status and logistics information.

[0040] The user interaction interface includes a touch screen, a display screen and a data storage module. The user interaction interface is used to display the internal status of the refrigerator body and the replenishment progress information. For example, the inventory in the refrigerator can be stored and the temperature data information can be checked. The user can be notified through a mobile phone APP or SMS, and the user can receive user instructions and provide replenishment notifications. Furthermore, the user can set preferences and view historical records through the user interaction interface. The intelligent sensor network module obtains the normal shelf life of ingredients from big data to count the inventory ingredients, and feeds back to the user through remote transmission and screen display.

[0041] Power management module: The power management module is used to provide a stable power supply for the entire system to ensure the normal operation of each component. Furthermore, in energy-saving mode, the power management module can also adjust the power supply strategy according to the system load to reduce energy consumption.

[0042] For example, since there are many types of items stored in the refrigerator body, collisions are likely to occur when reading tags, resulting in data loss. Therefore, anti-collision algorithms such as binary anti-collision algorithms and ALOHA algorithms are needed to ensure accurate data reading; users can mark foods that need to be thawed in advance through remote control. After receiving the command, the system will turn off the food freezer, so that food can be thawed in advance for user convenience.

[0043] By installing a variety of sensors inside the refrigerator and freezer, and combining the data analysis and processing functions of the central processing unit, the system can grasp the inventory status of food in the refrigerator in real time and accurately. Then, the central processing unit can accurately judge whether the food is sufficient and whether it needs to be replenished according to preset rules, so that users can clearly know the food reserves in the refrigerator body, avoid repeated purchases or waste of expired food due to forgetting the inventory of food, realize refined food management, improve the convenience of life, and meet people's pursuit of convenient life in modern fast-paced life. The system is connected to the Internet through the network communication module. When the system determines that replenishment is needed, it can automatically send the replenishment list to the e-commerce platform or designated supplier and complete the order process, which greatly saves the user's time and energy. The user no longer needs to manually record, check the required ingredients and perform shopping operations, thereby effectively reducing the burden of life and realizing refined food management.

[0044] Specifically, the sensor data acquisition module includes a temperature and humidity sensor, which is used to collect temperature and humidity data inside the refrigerator body in real time.

[0045] A weight sensor is provided inside the refrigerator and freezer compartments, and a storage compartment is installed at the bottom of the storage compartment. The weight sensor is used to detect weight changes of items stored inside the storage compartment.

[0046] Furthermore, a gas sensor is included for detecting CO 2 , O 2 Gas concentration, light sensors, and then light sensors can sense the light intensity in the environment and automatically adjust the brightness of lighting equipment according to preset thresholds to maintain appropriate lighting levels, thereby saving energy.

[0047] Furthermore, through continuous monitoring of environmental parameters through temperature and humidity sensors, weight sensors, gas sensors and light sensors, the system can promptly detect abnormal temperature and humidity and remind users to adjust the refrigerator body settings or troubleshoot faults, which helps maintain a stable and suitable environment inside the refrigerator body, ensure the freshness of food, extend the shelf life of food, and reduce the loss of food due to environmental factors.

[0048] Specifically, the temperature sensor, humidity sensor, weight sensor and camera are connected to the input pin of the single-chip computer through either analog output or digital output, and the collected data is transmitted to the central processing unit in real time.

[0049] Specifically, the display screen uses either OLED or LCD to display the temperature, humidity, and number of remaining items inside the refrigerator body in real time, and the display screen communicates with the single-chip microcomputer through IIC and SPI buses. Furthermore, key information such as the temperature, humidity, and number of remaining items inside the refrigerator body is displayed in real time. Users can obtain important data in time when approaching the refrigerator, and communicate with the single-chip microcomputer through IIC and SPI buses, which ensures the stability and efficiency of data transmission, so that the displayed information can be updated in time, providing users with accurate and real-time status display.

[0050] Specifically, the data storage module stores the collected data locally through an SD card or built-in Flash memory, and sends the data to the cloud server for remote storage through Wi-Fi, Bluetooth, and wireless communications. Furthermore, local storage allows users to quickly view historical data locally for review and analysis; remote storage ensures the security and accessibility of the data. Even if the user replaces the device or the refrigerator fails, the data can still be retained in the cloud for subsequent viewing and reference, helping users to better manage ingredients and track refrigerator usage over the long term.

[0051] Specifically, the wireless communication module is any one of the ESP8266 Wi-Fi module, ESP32 Wi-Fi module or Bluetooth module connected to the mobile phone APP or cloud server. The wireless communication module communicates with the microcontroller through the UART serial port to receive and send data. Furthermore, it realizes the information interaction between the refrigerator system and the outside world. Whether it is sending out a replenishment list or receiving feedback from an e-commerce platform or cloud server, it depends on the stable operation of the wireless communication module, which further expands the functional boundaries of the refrigerator system and improves the overall intelligence and use value.

[0052] Specifically, the RFID radio frequency card reader module supports multiple RFID card modules to simulate the identification of different items, and record the name, quantity, and shelf life information of the corresponding items. The RFID card swiping module uses the SPI bus or IIC bus to communicate with the single-chip microcomputer, and sends the identified information to the single-chip microcomputer for processing. Furthermore, by simulating the identification of different items with multiple RFID card modules, it can record detailed information such as the name, quantity, and shelf life of the corresponding items, thereby making the system's management of ingredients more detailed and intelligent. It not only knows what ingredients are available, but also their specific attributes. It can be more in line with the actual situation when performing inventory judgment, expiration reminders and other operations, thereby improving the accuracy and efficiency of ingredient management.

[0053] Specifically, the alarm module includes a buzzer and an LED indicator light, which are connected to the single-chip microcomputer through the GPIO pin, and its working status is controlled by the single-chip microcomputer. Furthermore, it is connected to the single-chip microcomputer through the GPIO pin, and its working status is controlled by the single-chip microcomputer. When situations such as abnormal temperature, expiring food ingredients, and replenishment reminders occur, the user can be reminded in an intuitive sound and light form, ensuring that the user can know the important information in the refrigerator in time even if he is not always paying attention to the display screen or mobile phone notifications, thereby enhancing the effectiveness of information transmission between the system and the user and avoiding missing important prompts due to user negligence.

[0054] Specifically, the power management module includes a step-down circuit and a rectifier circuit, which convert the input AC power into the DC power required by the system. Further, it avoids system failures, data loss or component damage caused by power problems such as voltage fluctuations, thereby ensuring that the digital refrigerator system can operate continuously and reliably and extending the service life of the system.

[0055] An operating method of a digital refrigerator system specifically includes the following steps:

[0056] S1. The refrigerator system is powered on and initialized, including hardware self-check and network connection test. After the initialization is completed, if the system enters the standby state, it will wait for user operation or automatically execute the replenishment task.

[0057] S2. The user interacts with the refrigerator through a mobile phone APP or voice assistant and inputs replenishment requirements.

[0058] S3. The refrigerator system receives user instructions, parses and confirms replenishment requirements, including product name, quantity, and delivery time.

[0059] S4. The refrigerator system detects the current inventory status through built-in sensors or RFID technology.

[0060] S5. Based on the user's replenishment demand and current inventory status, the system generates a replenishment request and sends it to the cloud server.

[0061] S6. The cloud server receives the replenishment request sent by the refrigerator system, optimizes the replenishment plan based on the user's historical purchase records and preference information, and generates an order. The cloud server sends the order information to the supplier or logistics platform for commodity procurement and delivery preparation.

[0062] S7. The supplier receives the order information, purchases and packs the goods. The logistics platform receives the delivery task and arranges for the delivery staff to deliver the goods. The delivery staff delivers the goods to the user's home at the agreed time and place.

[0063] S8. The refrigerator system receives the notification of delivery completion and updates the inventory information. The refrigerator system feeds back the replenishment results to the user, including replenishment success, delivery time, and delivery person information. The user can view the replenishment results through the mobile phone APP or voice assistant, and confirm or raise objections.

[0064] Furthermore, the refrigerator system undergoes regular maintenance, including hardware testing and software updates. Based on user usage and feedback, the system continuously optimizes replenishment algorithms and processes to improve replenishment efficiency and accuracy.

[0065] For example, when storage space is running low, you simply tell the refrigerator what type and quantity of ingredients you need, and the refrigerator will automatically arrange a home delivery service for you.

[0066] This specific embodiment is merely an explanation of the invention and is not a limitation of the invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. However, as long as they are within the scope of protection of the invention, they are protected by patent law.

Claims

1. A digital refrigerator system, characterized in that: include: A refrigerator body, wherein the refrigerator body includes a refrigerating chamber and a freezing chamber, and the refrigerating chamber and the freezing chamber are both provided with a temperature sensor, a humidity sensor, a weight sensor and a camera; The central processing unit includes an RFID card reader module, an alarm module and a single-chip microcomputer. The central processing unit is used to receive sensor data, perform data analysis, processing and decision-making, and determine whether the food inventory is sufficient and whether replenishment is needed according to preset rules and algorithms; An intelligent sensor network module, the intelligent sensor network module is used to monitor the internal environmental parameters of the refrigerator body and the internal environmental parameters and the duration of the fresh-keeping period of different food ingredients in real time and provide feedback, the intelligent sensor network module is composed of a plurality of sensor data acquisition modules, the plurality of sensor data acquisition modules are responsible for monitoring the internal environmental parameters of the refrigerator body and the internal environmental parameters and the duration of the fresh-keeping period of different food ingredients and provide feedback, and the plurality of intelligent sensor data are transmitted to the central processing unit via wired or wireless means; A network communication module, which includes a wireless communication module, is responsible for connecting to the Internet, sending the replenishment list to the e-commerce platform or designated supplier, automatically completing the order process, and receiving feedback from the external system; A user interaction interface, which is used to display the internal status of the refrigerator body and replenishment progress information. The user interaction interface includes a touch screen, a display screen and a data storage module, and notifies the user through a mobile phone APP or SMS; The power management module is used to provide a stable power supply for the entire system to ensure the normal operation of each component.

2. The digital refrigerator system according to claim 1, characterized in that: The sensor data acquisition module includes a temperature and humidity sensor, which is used to collect temperature and humidity data inside the refrigerator body in real time; A weight sensor is provided inside the refrigerating chamber and the freezing chamber, wherein storage compartments are provided. The weight sensor is installed at the bottom of the storage compartments, and is used to detect weight changes of items stored inside the storage compartments.

3. The digital refrigerator system according to claim 2, characterized in that: The temperature sensor, humidity sensor, weight sensor and camera are connected to the input pin of the single-chip computer through either analog output or digital output, and the collected data is transmitted to the central processing unit in real time.

4. The digital refrigerator system according to claim 1, characterized in that: The display screen uses either OLED or LCD to display the temperature, humidity, and quantity of remaining items inside the refrigerator body in real time, and the display screen communicates with the single-chip microcomputer via IIC and SPI buses.

5. The digital refrigerator system according to claim 1, characterized in that: The data storage module stores the collected data locally via an SD card or a built-in Flash memory, and sends the data to a cloud server for remote storage via Wi-Fi, Bluetooth, or wireless communication.

6. The digital refrigerator system according to claim 1, characterized in that: The wireless communication module is any one of an ESP8266 Wi-Fi module, an ESP32 Wi-Fi module or a Bluetooth module connected to a mobile phone APP or a cloud server. The wireless communication module communicates with the microcontroller through a UART serial port to receive and send data.

7. The digital refrigerator system according to claim 1, characterized in that: The RFID radio frequency card reader module supports multiple RFID card modules to simulate the identification of different items, record the name, quantity, and shelf life information of the corresponding items, and the RFID card swiping module uses the SPI bus or IIC bus to communicate with the microcontroller, and sends the identified information to the microcontroller for processing.

8. The digital refrigerator system according to claim 1, characterized in that: The alarm module includes a buzzer and an LED indicator light, which are connected to the single-chip microcomputer via a GPIO pin, and the working state of the alarm module is controlled by the single-chip microcomputer.

9. The digital refrigerator system according to claim 1, characterized in that: The power management module includes a step-down circuit and a rectifier circuit, which converts the input alternating current into the direct current required by the system.

10. The operation method of the smart refrigerator according to claim 1, characterized in that: The following usage steps are also included: S1. The refrigerator system is powered on and initialized, including hardware self-test and network connection test. After the initialization is completed, if the system enters the standby state, it will wait for user operation or automatically execute the replenishment task; S2. The user interacts with the refrigerator through a mobile phone app or voice assistant and inputs replenishment requirements; S3, the refrigerator system receives the user's instruction, parses and confirms the replenishment demand, including the product name, quantity, and delivery time; S4, the refrigerator system detects the current inventory status through built-in sensors or RFID technology; S5. Based on the user's replenishment demand and current inventory situation, the system generates a replenishment request and sends it to the cloud server; S6. The cloud server receives the replenishment request sent by the refrigerator system, optimizes the replenishment plan based on the user's historical purchase records and preference information, and generates an order. The cloud server sends the order information to the supplier or logistics platform for commodity procurement and delivery preparation; S7. The supplier receives the order information, purchases and packs the goods. The logistics platform receives the delivery task and arranges the delivery personnel to deliver the goods. The delivery personnel deliver the goods to the user's home at the agreed time and place. S8. The refrigerator system receives the notification of delivery completion and updates the inventory information. The refrigerator system feeds back the replenishment results to the user, including replenishment success, delivery time, and delivery person information. The user can view the replenishment results through the mobile phone APP or voice assistant, and confirm or raise objections.

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