Refrigerator food storage interaction system

Abstract

The utility model discloses a refrigerator food storage interaction system. The device comprises an MCU, a power supply module, a communication module, a voice module and a display screen. The MCU is respectively connected with the power supply module, the communication module, the voice module and the display screen; the communication module is connected with the voice module; the voice module is connected with the power supply module; a timer is arranged in the MCU; the voice module is connected with a microphone and a loudspeaker. The voice module collects voice through a microphone, processes and converts the voice into an electric signal, and transmits the electric signal to the MCU; voice reminding to a user is realized through the loudspeaker; a user can input a signal into the MCU through the communication module; the MCU carries out signal processing and sends an instruction to the display screen; the power supply module supplies power to the MCU, the communication module, the voice module and the display screen; and the display screen displays the food storage condition. Interaction between the refrigerator and a user can be achieved, the user can know the food storage condition in the refrigerator, and the refrigerator has the advantages of being clear, accurate, convenient and efficient.

Description

Technical Field

[0001] This utility model relates to refrigerator food storage interactive technology, specifically a refrigerator food storage interactive system. Background Technology

[0002] A refrigerator is a refrigeration device that keeps food or other items at a constant low temperature. With the continuous improvement of people's living standards, it has become widely used. It is used to refrigerate and freeze various vegetables, fruits, meats, and some semi-finished foods, bringing great convenience to people's work and life, and is an indispensable household appliance. However, ordinary refrigerators usually lack a way to interact with the user. Users often find it difficult to clearly understand the food stored inside, requiring them to remember and periodically check and handle the contents. If food has been stored for a while, it's easy to forget the type, quantity, or storage time. Furthermore, the shelf life of food is usually determined by the user's experience, which is inaccurate; sometimes food has already spoiled without the user noticing. Due to user negligence, food is often forgotten in some corner of the refrigerator, resulting in food waste. When taking food out, the quantity and type of food in the refrigerator cannot be effectively recorded, leading to disorderly stacking of food, cross-contamination of odors, and affecting the refrigerator's preservation environment. Therefore, a refrigerator food storage interactive system is needed to help users clearly understand the food storage situation. Utility Model Content

[0003] The purpose of this invention is to provide an interactive food storage system for refrigerators. This invention enables interaction between the refrigerator and the user, allowing the user to clearly understand the food storage status inside the refrigerator, and has the advantages of being clear, accurate, convenient, and efficient.

[0004] The technical solution of this utility model is as follows: A refrigerator food storage interactive system includes an MCU, a power module, a communication module, a voice module, and a display screen; the MCU is connected to the power module, the communication module, the voice module, and the display screen respectively; the communication module is connected to the voice module; the voice module is connected to the power module; the MCU has a built-in timer; the voice module is connected to a microphone and a speaker; the PB11 pin of the MCU is connected to the TXD pin of the communication module; the PB10 pin of the MCU is connected to the RXD pin of the communication module; the PA9 pin of the MCU is connected to the RXD pin of the display screen; the PA3 pin of the MCU is connected to the TXD pin of the voice module; the PA2 pin of the MCU is connected to the RXD pin of the voice module; the 3.3V voltage source terminal of the MCU is connected to the VCC pin of the display screen; the ground pin of the MCU is connected to the ground pin of the display screen; the 3.3V voltage source terminal of the voice module is connected to the VCC pin of the communication module; the ground pin of the voice module is connected to the ground pin of the communication module; the microphone is connected to the MIC- pin and the MIC+ pin of the voice module respectively; the speaker is connected to the SPK+ pin and the SPK- pin of the voice module respectively.

[0005] In the aforementioned refrigerator food storage interactive system, the ALED pin of the communication module is connected to one end of a resistor R1, the other end of the resistor R1 is connected to the positive terminal of a light-emitting diode LED1, and the negative terminal of the light-emitting diode LED1 is grounded.

[0006] In the aforementioned refrigerator food storage interactive system, the power module is connected to the MCU via USB; the power module is also connected to the voice module via Type-C.

[0007] The aforementioned refrigerator food storage interactive system uses an STM32F103RCT6 MCU.

[0008] In the aforementioned refrigerator food storage interactive system, the communication module is a Bluetooth module; the model of the communication module is JDY-31.

[0009] The aforementioned refrigerator food storage interactive system uses a voice module model SU-03T.

[0010] Compared with existing technologies, the voice module of this invention collects voice through a microphone, processes it, converts it into an electrical signal, and transmits it to the MCU via a serial port; it provides voice reminders to the user through a speaker; simultaneously, the user can connect a mobile phone to the communication module, set and send signals to the communication module, and the communication module inputs the signals to the MCU; the MCU processes the signals, judges them, and sends corresponding instructions to the display screen; the power module supplies power to the MCU, communication module, voice module, and display screen; the display screen shows the food storage timer, food inventory status, and food inventory records. This invention enables interaction between the refrigerator and the user, allowing the user to clearly understand the food storage status inside the refrigerator, and has the advantages of being clear, accurate, convenient, and efficient. Attached Figure Description

[0011] Figure 1 This is a module connection diagram of this utility model;

[0012] Figure 2 This is a circuit diagram of the present invention;

[0013] Figure 3 This is the circuit diagram of the voice module;

[0014] Figure 4 This is a schematic diagram of the voice module chip;

[0015] Figure 5 Circuit diagram of the communication module;

[0016] Figure 6 This is a diagram illustrating the setup process of the communication module;

[0017] Figure 7 This is a diagram illustrating the Bluetooth module settings via a mobile phone.

[0018] Figure 8 This is a functional test diagram of the display screen;

[0019] Figure 9 This is an illustration of the display screen. Figure 1 ;

[0020] Figure 10 This is an illustration of the display screen. Figure 2 . Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0022] Example: Refrigerator food storage interactive system, such as Figure 1 and Figure 2As shown, the system includes an MCU, a power module, a communication module, a voice module, and a display screen. The MCU is connected to the power module, communication module, voice module, and display screen. The communication module is connected to the voice module. The voice module is connected to the power module. The MCU has a built-in timer for timing food storage. The voice module is connected to a microphone and a speaker; the microphone is used for voice input, and the speaker is used for voice output and to remind users of food storage time, facilitating user interaction. The voice module collects voice through the microphone, processes it, converts it into an electrical signal, and transmits it to the MCU via a serial port. Simultaneously, the user can connect a mobile phone to the communication module, set and send signals to the communication module, which then inputs the signals to the MCU. The MCU processes the signals, determines the appropriate response, and sends corresponding instructions to the display screen. The display screen shows the timing, food storage status, and food storage records. The power module is connected to the MCU via USB and to the voice module via Type-C. The power module supplies power to the MCU, communication module, voice module, and display screen. In use, the communication module is powered through the pins of the voice module. When the indicator light is on, it indicates that the MCU is running; when the communication module flashes, it indicates that the module is running but not connected to a mobile phone or other device. In use, this invention allows users to connect their mobile phone to the Bluetooth assistant and communication module, and then activate the voice module. Users can then speak their needs to the module for intelligent communication, or use Bluetooth to record, view, and time information. After the needs are spoken, the display screen will show the appropriate content. Users can check the inventory via Bluetooth or voice control. The timing page can be opened and the timing function started via the Bluetooth button on the phone or through the voice module. This invention can record the increase or decrease of food stored in the refrigerator, displaying the quantity and time of food storage, thus enabling interaction between the refrigerator and the user. This allows the user to clearly understand the food storage status inside the refrigerator, offering advantages such as clarity, accuracy, convenience, and efficiency.

[0023] The MCU's PB11 pin is connected to the TXD pin of the communication module; the MCU's PB10 pin is connected to the RXD pin of the communication module; the MCU's PA9 pin is connected to the RXD pin of the display screen; the MCU's PA3 pin is connected to the TXD pin of the voice module; the MCU's PA2 pin is connected to the RXD pin of the voice module; the MCU's 3.3V voltage source is connected to the VCC pin of the display screen; and the MCU's ground pin is connected to the ground pin of the display screen. The MCU's model is STM32F103RCT6. The STM32F103RCT6 is an embedded microcontroller integrated circuit (IC), a 32-bit Cortex-M3 core processor with a speed of 72MHz, a program memory capacity of 256KB (FLASH type), a RAM capacity of 48KB, and a package of LQFP64. A minimum microcontroller system is a system composed of the minimum necessary components for a microcontroller to operate normally. After power-on, the minimum microcontroller system can reset normally and download the program; it has no other functions. Once the minimum system is guaranteed to be correct, other functional modules or devices can be added sequentially to give the microcontroller actual functionality. The STM32 microcontroller minimum system includes a reset circuit and a clock circuit.

[0024] Voice module such as Figure 3 and Figure 4 As shown, the 3.3V voltage source terminal of the voice module is connected to the VCC pin of the communication module; the ground pin of the voice module is connected to the ground pin of the communication module; the microphone is connected to the MIC- pin and the MIC+ pin of the voice module respectively; the speaker is connected to the SPK+ pin and the SPK- pin of the voice module respectively. The model of the voice module is SU-03T. The parameters of the voice module are shown in Table 1:

[0025] Table 1. Parameters of the Voice Module

[0026]

[0027] The SU-03T voice module is a low-cost, low-power, and compact offline voice recognition module that can be quickly applied to smart homes, various smart small appliances, 86-type set-top boxes, toys, lamps, and other products requiring voice control. This module features a 32-bit RISC core, operates at a frequency of 240MHz, supports DSP instruction sets and an FPU floating-point unit, and has an FFT accelerator supporting up to 1024-point complex FFT / IFFT operations or 2048-point real-point FFT / IFFT operations. It includes built-in high-speed SRAM, 2MB FLASH, a built-in 3W mono Class AB amplifier, one electret microphone, 2S input / output, a built-in 5V to 3.3V power input module, and an external 3.3V load not exceeding 150mA.

[0028] Communication module such as Figure 5 As shown, the communication module is a Bluetooth module. One end of resistor R1 is connected to the ALED pin of the communication module, and the other end of resistor R1 is connected to the positive terminal of LED1. The negative terminal of LED1 is grounded. The Bluetooth module model is JDY-31. JDY-31 is based on Bluetooth 3.0 SPP, thus supporting data pass-through from Windows, Linux, and Android. It operates at a frequency of 2.4GHz, uses GFSK modulation, has a maximum transmit power of 8dB, and a maximum transmit distance of 30 meters. Users can modify device names, baud rates, and other commands via AT commands, making it convenient, quick, and flexible to use. JDY-31 uses the classic Bluetooth protocol and can communicate with Bluetooth-enabled computers (desktops and laptops) and mobile phones (Android). It can be applied to Windows computer Bluetooth serial port pass-through, Android Bluetooth serial port pass-through, smart home control, automotive ODB testing equipment, Bluetooth toys, shared power banks, shared scales, medical instruments, etc. JDY-31 supports surface mount and soldering headers: (1) Header application: The header specifications are standard 2.54mm pitch headers, requiring only 5 header holes on the module for soldering; (2) Surface mount application: Generally, only VCC, GND, RXD, and TXD pins need to be connected. To actively disconnect in the connected state, send AT+DISC in the connected state. Before pairing, connect the CH340 to the computer and send commands using a serial port assistant. When sending AT commands via serial port, be sure to add \r\n. Bluetooth module settings are as follows. Figure 6 and Figure 7 As shown in Table 2, the commonly used commands for completing the Bluetooth module initialization settings are as follows:

[0029] Table 2 Commonly Used Commands for Bluetooth Modules

[0030] sequence instruction Function default 1 AT+VERSION Version number JDY-31-V1.2 2 AT+RESET Soft reset 3 AT+DISC Disconnect (Valid while connected) 4 AT+LADDR Query module's MAC address 5 AT+PIN Connection password setting and query 1234 6 AT+BAUD Baud rate settings and queries 9600 7 AT+NAME Broadcast Name Settings and Query JDY-31-SPP 8 AT+DEFAULT Factory reset 9 AT+ENLOG Serial port status output enable 1

[0031] The display is a serial port screen, capable of displaying text and images. Developers can use it to display any type of text and images, helping users better understand the embedded system's status. The serial port screen can be used to create user interfaces. Developers can use it to create menus, buttons, and other controls, enabling users to interact with the embedded system. The serial port screen can be used to monitor embedded system data. Developers can use it to display sensor data, network data, and other data types, providing a better understanding of the embedded system's status. The serial port screen can be used to display debugging information. The display's functional test diagram is shown below. Figure 8 As shown, the programming method for serial port screens generally involves, but is not limited to, using a PC host computer to perform simple editing of UI components (txt components, btn components, prog components, point components, etc.) and mouse drag-and-drop, importing materials (such as company startup logo, background images, status change icons, etc.), and simultaneously editing event logic (page jump logic, timer revent, button status change touch_event, etc.) and interaction mechanisms (MCU and serial port screen communication protocol). This allows for the rapid implementation of UI interface functions that are difficult to achieve with a bare screen.

[0032] Users can control the display screen via the Bluetooth assistant on their mobile phone, such as... Figure 9 and Figure 10 As shown, users can check the inventory of vegetables, fruits, and meats, turn on and clear the timer. In addition, to facilitate the use of smart devices by the elderly and young children who have difficulty using them, a voice module of model SU-03T is used. After being compiled by the host computer, a total of 50 sentences are set, which can be used for voice control, food inventory recording, marinating timer, and steaming timer.

[0033] Working Principle: The voice module of this invention collects voice data via a microphone, processes it, and converts it into electrical signals, which are then transmitted to the MCU via a serial port. A speaker provides voice reminders to the user. Simultaneously, the user can connect their mobile phone to the communication module, set and send signals to it, and the communication module inputs the signals to the MCU. The MCU processes and judges the signals, sending corresponding instructions to the display screen. The power module supplies power to the MCU, communication module, voice module, and display screen. The display screen shows the food storage timer, food inventory status, and food inventory records. This invention enables interaction between the refrigerator and the user, allowing the user to clearly understand the food storage status within the refrigerator, offering advantages such as clarity, accuracy, convenience, and efficiency.

[0034] The above embodiments merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. Furthermore, in these embodiments, "up," "down," "left," "right," "front," and "back" represent relative positions only, not absolute positions. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A refrigerator food storage interactive system, characterized in that: The system includes an MCU, a power module, a communication module, a voice module, and a display screen. The MCU is connected to the power module, communication module, voice module, and display screen. The communication module is connected to the voice module. The voice module is connected to the power module. The MCU has a built-in timer. The voice module is connected to a microphone and a speaker. The MCU's PB11 pin is connected to the communication module's TXD pin. The MCU's PB10 pin is connected to the communication module's RXD pin. The MCU's PA9 pin is connected to the display screen's RXD pin. The MCU's PA3 pin is connected to the voice module's TXD pin. The PA2 pin is connected to the RXD pin of the voice module; the 3.3V voltage source of the MCU is connected to the VCC pin of the display screen; the ground pin of the MCU is connected to the ground pin of the display screen; the 3.3V voltage source of the voice module is connected to the VCC pin of the communication module; the ground pin of the voice module is connected to the ground pin of the communication module; the microphone is connected to the MIC- pin and the MIC+ pin of the voice module respectively; the speaker is connected to the SPK+ pin and the SPK- pin of the voice module respectively; the communication module is a Bluetooth module; the model of the communication module is JDY-31.

2. The refrigerator food storage interactive system according to claim 1, characterized in that: The ALED pin of the communication module is connected to one end of a resistor R1, and the other end of the resistor R1 is connected to the positive terminal of the light-emitting diode LED1. The negative terminal of the light-emitting diode LED1 is grounded.

3. The refrigerator food storage interactive system according to claim 1, characterized in that: The power module is connected to the MCU via USB; the power module is connected to the voice module via Type-C.

4. The refrigerator food storage interactive system according to claim 1, characterized in that: The MCU model is STM32F103RCT6.

5. The refrigerator food storage interactive system according to claim 1, characterized in that: The voice module is model SU-03T.

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