Intelligent household electrical appliance control system based on voice recognition

Abstract

The utility model relates to an intelligent household electrical appliance control system based on voice recognition, which comprises a single-chip microcomputer controller, a voice recognition module, a wireless communication module and a relay control module, and is characterized in that the voice recognition module is used for receiving and recognizing a user voice instruction, converting the voice instruction into a text instruction and sending the text instruction to the single-chip microcomputer controller; the single-chip microcomputer controller is used for processing a received text instruction and generating a corresponding control instruction, the wireless communication module is used for receiving the control instruction and sending the control instruction to the relay control module, and the relay control module is used for driving a switch of a household appliance according to the received control instruction. The single-chip microcomputer controller comprises an STM-32 single-chip microcomputer, and a reset circuit, a crystal oscillator circuit, a BOOT option circuit and a power supply circuit which are electrically connected with the STM-32 single-chip microcomputer. According to the technical scheme of the utility model, the on-off and functions of household appliances such as televisions, air conditioners and the like can be controlled through the voice instructions in the voice instruction library, and the technical effect of intelligent home furnishing is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of intelligent household appliance control system, especially a kind of intelligent household appliance control system based on speech recognition. BACKGROUND

[0002] With the high-speed development of domestic economy and society, current household appliances have not been able to meet the needs of fast-paced daily life, and intelligent household appliances can improve the convenience and comfort of daily life, remotely control the location of household appliances and other functions using voice or telephone methods, complete user management, linkage functions and timing management, etc. Intelligent household appliances can improve the efficiency and energy saving of life, and can improve the entertainment and closeness of life, realize intelligent playing of entertainment content such as music, video and games through intelligent sound, TV, lighting and other devices, create different atmosphere and scene, and increase the fun and happiness of life. SUMMARY

[0003] Based on the above problems, the utility model provides an intelligent household appliance control system based on speech recognition, which can control the on-off and functions of household appliances such as TV and air conditioner through voice commands in the voice command library, and realize home intelligence.

[0004] To achieve the above purpose, the utility model provides the following technical scheme: an intelligent household appliance control system based on speech recognition, comprising a single-chip microcomputer controller and the following modules electrically connected with the single-chip microcomputer controller: a speech recognition module, a wireless communication module and a relay control module. The speech recognition module is used to receive and recognize user voice commands and convert the voice commands into text instructions and send them to the single-chip microcomputer controller. The single-chip microcomputer controller is used to process the received text instructions and generate corresponding control instructions. The wireless communication module is used to receive control instructions and send them to the relay control module. The relay control module is used to drive the on-off of household appliances according to the received control instructions. The single-chip microcomputer controller comprises an STM-32 single-chip microcomputer and a reset circuit, a crystal oscillator circuit, a BOOT option circuit and a power supply circuit electrically connected with the STM-32 single-chip microcomputer.

[0005] By adopting the above technical scheme, when the user uses voice commands, the user's voice password is converted into text instructions by the speech recognition module and sent to the single-chip microcomputer controller. The single-chip microcomputer controller converts the received text instructions into corresponding control instructions. The control instructions are sent to the relay control module through the wireless communication module. The relay control module performs actions on household appliances. Through the voice control mode, the user can easily use the electrical equipment in the home, such as turning on the light, adjusting the air conditioner temperature, changing the TV channel, etc., to achieve the purpose of intelligent management of home.

[0006] The utility model further sets up: voice recognition module adopts multiple password recognition control mode.

[0007] Through adopting above-mentioned technical scheme, multiple password includes first level instruction, second level instruction, first level instruction is used for waking up voice recognition module, makes it enter waiting instruction state, when first level instruction is correct, can carry out second level instruction voice recognition, when second level instruction is correct, relay control module drives each electric appliance and executes switch action, to prevent misrecognition, improve use reliability.

[0008] The utility model further sets up: still include stepper motor module, stepper motor module includes chip U12, connector J1, the pin 1 of chip U12 is connected with the pin 32 of single-chip microcomputer controller, the pin 2 of chip U12 is connected with the pin 31 of single-chip microcomputer controller, the pin 3 of chip U12 is connected with the pin 30 of single-chip microcomputer controller, the pin 4 of chip U12 is connected with the pin 29 of single-chip microcomputer controller, the pin 8 of chip U12 is grounded, the pin 9 of chip U12 is connected power VCC, the pin 1 of connector J1 is connected with the pin 13 of chip U12, the pin 2 of connector J1 is connected with the pin 14 of chip U12, the pin 3 of connector J1 is connected with the pin 15 of chip U12, the pin 4 of connector J1 is connected with the pin 16 of chip U12, the pin 5 of connector J1 is connected power VCC.

[0009] Through adopting above-mentioned technical scheme, stepper motor module drives motor forward rotation or reverse assembly through the control instruction output of STM-32 single-chip microcomputer, promotes curtain to open or close, chip U12 adopts ULN2003 chip, specifically, STM-32 single-chip microcomputer exports current through IN1, IN2, IN3 and IN4 four pins, then through the OUT1, OUT2, OUT3 and OUT4 four phases of ULN2003 drive chip, provides four-phase current to motor.

[0010] The utility model further sets up: reset circuit includes switch 1, resistance R13 and electric capacity C15, one end of switch 1 is connected with one end of resistance R13 and one end of electric capacity C15 respectively, the other end of switch 1 and the other end of electric capacity C15 are all grounded, the other end of resistance R13 is connected to power supply, one end of switch 1 is also connected with the pin 41 of STM-32 singlechip, the crystal oscillator circuit includes electric capacity C1, C7 and crystal oscillator X1, one end of electric capacity C1 is connected with one end of electric capacity C7 and then grounded, the other end of electric capacity C1 is connected with one end of crystal oscillator X1 and then connected with the pin 42 of STM-32 singlechip, the other end of electric capacity C7 is connected with the other end of crystal oscillator X1 and then connected with the pin 43 of STM-32 singlechip, the BOOT option circuit includes pin connector 3X2, resistance R9 and resistance R10, the pin 1 and pin 2 of pin connector 3X2 are all connected to power supply VCC, the pin 5 and pin 6 of pin connector 3X2 are all grounded, the pin 3 and pin 4 of pin connector 3X2 are connected with resistance R9 and resistance R10 respectively and then connected with the pin BOOT0 and pin BOOT1 of STM-32 singlechip.

[0011] Through adopting the technical scheme, the reset circuit is used for restoring the register in STM-32 singlechip to the initial state, clearing the previous working state, and preparing for the new program operation, the crystal oscillator circuit is used for providing the clock signal for STM-32 singlechip, and the BOOT option circuit is used for setting the starting mode of STM-32 singlechip, and the three circuits jointly guarantee that STM-32 singlechip can stably and reliably operate and provide flexible configuration options.

[0012] The utility model further sets up: the power supply circuit includes self-locking switch SWITCH, power supply U5, the pin 1 of power supply U5 is connected with the pin 1 of self-locking switch SWITCH, the pin 2 of power supply U5 is grounded, the pin 3 of power supply U5 is connected with external power supply, the pin 6 of self-locking switch SWITCH is connected with the pin 19 of STM-32 singlechip.

[0013] Through adopting the technical scheme, the power supply circuit is used for providing the stable power supply for STM-32 singlechip, ensuring that STM-32 singlechip can normally work, and can also be connected to other equipment through USB or be powered by power bank, to ensure the stability and reliability of STM-32 singlechip circuit.

[0014] The utility model further sets up: the voice recognition module adopts LD3320 chip, the pin IRQ, pin CS, pin P0, pin P2, pin RST, pin A0, pin WR, pin P1 of voice recognition module are connected with pin A15, pin B10, pin B15, pin B13, pin B11, pin A8, pin B12, pin B14 of STM-32 singlechip respectively.

[0015] Through adopting above-mentioned technical scheme, LD3320 chip can realize the voice recognition work of non-designated person, and need not specially train the language ability of specific person, improve use convenience, and multiple working mode, strong practicality. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is system circuit principle diagram of the utility model embodiment;

[0017] Figure 2 It is singlechip controller principle diagram of the utility model embodiment;

[0018] Figure 3 It is voice recognition module principle diagram of the utility model embodiment;

[0019] Figure 4 It is relay control module principle diagram of the utility model embodiment;

[0020] Figure 5 It is power input circuit diagram of the utility model embodiment;

[0021] Figure 6 It is stepping motor module drive principle diagram of the utility model embodiment;

[0022] Figure 7 It is LED lamp voice recognition flow chart of the utility model embodiment;

[0023] Figure 8 It is system software flow chart of the utility model embodiment;

[0024] Label meaning in the drawing: 1-singlechip controller, 101-STM-32 singlechip, 102-reset circuit, 103-crystal oscillator circuit, 104-BOOT option circuit, 105-power circuit, 2-voice recognition module, 3-relay control module, 4-stepping motor module. DETAILED DESCRIPTION

[0025] The specific embodiment is merely an explanation of the utility model, and is not a limitation of the utility model, and a person skilled in the art can make modifications without creative contribution to the embodiment according to the needs after reading the specification, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

[0026] Referring to the accompanying Figures 1-8 The embodiment discloses an intelligent household appliance control system based on voice recognition, which comprises a single-chip microcomputer controller 1 and the following modules electrically connected with the single-chip microcomputer controller 1: a voice recognition module 2, a wireless communication module and a relay control module 3, the voice recognition module 2 is used for receiving and recognizing user voice instructions and converting the voice instructions into text instructions and sending the text instructions to the single-chip microcomputer controller 1, the single-chip microcomputer controller 1 is used for processing the received text instructions and generating corresponding control instructions, the wireless communication module is used for receiving the control instructions and sending the control instructions to the relay control module 3, and the relay control module 3 is used for driving the switch of a household appliance according to the received control instructions, and the single-chip microcomputer controller 1 comprises an STM-32 single-chip microcomputer 101 and a reset circuit 102, a crystal oscillator circuit 103, a BOOT option circuit 104 and a power supply circuit 105 electrically connected with the STM-32 single-chip microcomputer 101.

[0027] The STM32F103C8T6 single-chip microcomputer is used as a central processing unit, can recognize the received signals and issue corresponding control commands, has high-performance instruction sets and data processing capacity, can meet the needs of various applications, and compared with the single-chip microcomputers of the 51 series, the STM32 single-chip microcomputer has more functions:

[0028] 1. High performance: the main frequency is as high as 72MHz, supports multiple instruction sets and hardware division operations, has a multi-level bus matrix and a DMA controller, and improves the data transmission efficiency;

[0029] 2. Rich peripherals: multiple common peripherals including ADC, DAC, I2C, SPI, USART, CAN, USB, etc. are provided, which can meet the needs of various applications and support external interrupts and DMA operations;

[0030] 3. Flexible clock system: supports internal and external clock sources, can realize frequency multiplication and frequency division through a PLL phase-locked loop, can adjust the clock frequency according to different working modes, realizes the balance between low power consumption and high performance;

[0031] 4. Simple and easy-to-use development environment: supports standard peripheral library (SPL) and hardware abstraction layer library (HAL), provides rich example codes and documents, and facilitates developers to quickly start and transplant;

[0032] 5. Low cost and high reliability: LQFP48 package is adopted, the number of pins is less, the cost is lower, meanwhile, it has internal temperature sensor, CRC checker, watchdog timer and other functions, which improves the stability and reliability of the chip.

[0033] The wireless communication module adopts 433MHz wireless transceiver module to complete the data transmission between peripheral components and STM-32 single-chip microcomputer 101, and has the characteristics of low power consumption, strong penetration, long transmission distance, etc., which provides the possibility for realizing the intelligent home system with low cost, accuracy, effectiveness, stability and speed.

[0034] The relay control module 3 corresponds to the switching circuit of each electrical appliance, such as fan, television, air conditioner and other electrical appliances. Taking the fan circuit as an example, the relay U8 is driven by the triode Q3, so that the relay U8 in the circuit can realize the switching function. When the threshold value of the control signal reaches the set value, the STM-32 single-chip microcomputer 101 outputs high level, so that the triode Q3 and the relay U8 are turned on at the same time and attracted, thereby driving the load.

[0035] The embodiment is further provided: the voice recognition module 2 adopts a multi-password recognition control mode. The multi-password includes a first-level instruction and a second-level instruction. The first-level instruction is used for the voice recognition module 2 to enter a waiting instruction state, and the first-level instruction can be set as "intelligent housekeeper". When the password of calling "intelligent housekeeper" is correct, the LED indicator light is turned on. At this time, the voice recognition of the second-level instruction can be performed. When the second-level instruction is correct, the relay control module 3 drives each electrical appliance to perform the switching action, so as to prevent misrecognition and improve the use reliability.

[0036] The embodiment is further provided with a stepper motor module 4, which comprises a chip U12 and a connector J1, pin 1 of the chip U12 is connected to pin 32 of the single-chip controller 1, pin 2 of the chip U12 is connected to pin 31 of the single-chip controller 1, pin 3 of the chip U12 is connected to pin 30 of the single-chip controller 1, pin 4 of the chip U12 is connected to pin 29 of the single-chip controller 1, pin 8 of the chip U12 is grounded, pin 9 of the chip U12 is connected to the power supply VCC, pin 1 of the connector J1 is connected to pin 13 of the chip U12, pin 2 of the connector J1 is connected to pin 14 of the chip U12, pin 3 of the connector J1 is connected to pin 15 of the chip U12, pin 4 of the connector J1 is connected to pin 16 of the chip U12, and pin 5 of the connector J1 is connected to the power supply VCC. The ULN2003 is a high-voltage and high-current integrated circuit chip with Darlington structure, the input current of which is provided by the STM-32 single-chip microcomputer, and only a few milliamperes are needed to realize the driving function. The characteristics of the ULN2003 chip include low static current, high common-mode rejection ratio, low saturation voltage, etc. The low static current indicates that the efficiency of the device is very low in the static state, but it can increase the service life of the device; the high common-mode rejection ratio can more effectively control the common-mode noise, thereby improving the signal quality; the low saturation current can reduce the total power of the device, but at the same time it can also increase the signal quality, and has the advantages of stable performance, high reliability, wide application, etc.

[0037] The embodiment is further provided with: the reset circuit 102 includes a switch 1, a resistor R13 and a capacitor C15, one end of the switch 1 is connected with one end of the resistor R13 and one end of the capacitor C15 respectively, the other end of the switch 1 and the other end of the capacitor C15 are both grounded, the other end of the resistor R13 is connected with a power supply, one end of the switch 1 is also connected with a pin 41 of the STM-32 single-chip microcomputer 101, the crystal oscillator circuit 103 includes capacitors C1 and C7 and a crystal oscillator X1, one end of the capacitor C1 is connected with one end of the capacitor C7 in parallel and then grounded; the other end of the capacitor C1 is connected with one end of the crystal oscillator X1 and then connected with a pin 42 of the STM-32 single-chip microcomputer 101; the other end of the capacitor C7 is connected with the other end of the crystal oscillator X1 and then connected with a pin 43 of the STM-32 single-chip microcomputer 101, the BOOT option circuit 104 includes a pin connector 3X2, a resistor R9 and a resistor R10, the pin 1 and the pin 2 of the pin connector 3X2 are both connected with a power supply VCC, the pin 5 and the pin 6 of the pin connector 3X2 are both grounded, the pin 3 and the pin 4 of the pin connector 3X2 are connected with the resistor R9 and the resistor R10 respectively and then connected with a pin BOOT0 and a pin BOOT1 of the STM-32 single-chip microcomputer 101. The reset circuit 102 is used for restoring the registers in the STM-32 single-chip microcomputer 101 to the initial state, clearing the previous working state and preparing for the new program running, the crystal oscillator circuit 103 is used for providing a clock signal for the STM-32 single-chip microcomputer 101, and the BOOT option circuit 104 is used for setting the starting mode of the STM-32 single-chip microcomputer 101, and the three circuits together ensure that the STM-32 single-chip microcomputer 101 can stably and reliably run and provide flexible configuration options.

[0038] The embodiment is further provided with: the power supply circuit 105 includes a self-locking switch SWITCH and a power supply U5, the pin 1 of the power supply U5 is connected with the pin 1 of the self-locking switch SWITCH, the pin 2 of the power supply U5 is grounded, the pin 3 of the power supply U5 is connected with an external power supply, and the pin 6 of the self-locking switch SWITCH is connected with a pin 19 of the STM-32 single-chip microcomputer 101. The power supply circuit 105 is used for providing a stable power supply for the STM-32 single-chip microcomputer 101, ensuring that the STM-32 single-chip microcomputer 101 can work normally, and also can be connected to other devices through a USB or powered by a power bank, etc., to ensure the stability and reliability of the STM-32 single-chip microcomputer 101 circuit.

[0039] The embodiment is further provided with: the voice recognition module 2 adopts an LD3320 chip, and the pin IRQ, the pin CS, the pin P0, the pin P2, the pin RST, the pin A0, the pin WR, and the pin P1 of the voice recognition module 2 are connected with the pin A15, the pin B10, the pin B15, the pin B13, the pin B11, the pin A8, the pin B12, and the pin B14 of the STM-32 single-chip microcomputer 101 respectively. The plurality of working modes include: 1. normal mode: directly speaking, and the module directly recognizing, 2. key mode: a key triggers the ASR (Automatic Speech Recognition) process, 3. password mode: a first-level wake-up word (password) is needed, and the password mode is preferred, so as to avoid misrecognition in a noisy environment. The use method of the LD3320 voice recognition module 2 is as follows: by adding a key word into the LD3320 voice recognition module 2, a user executes a function User_handle(nAsrRes), processes voice recognition information, and prints different information instructions through a serial port according to different situations, and different actions are executed according to the different instructions.

[0040] The working process (see Figures 7-8 ): after the device is powered on, the voice recognition module 2 starts, the microphone is used to receive external voice signals, and whether the voice recognition code is correct is judged by the voice recognition module 2. When the voice module collects a voice recognition code matching the recognition code defined by us, it can be confirmed that the recognition code is correct, and then the single-chip microcomputer controller 1 will execute a related operation. Taking the LED lamp control as an example, the user needs to input a first-level password “smart home” first, which is used to wake up the voice recognition module 2, so that it enters a waiting instruction state. After the first-level instruction recognition is correct, the second-level instruction recognition can be performed. The second-level instruction of turning on or off the lamp can be “turning on or off the lamp”, “turning on or off the lamp”, “turning on or off the lamp”, and the like. When the user speaks the second-level instruction, the smart home system can recognize and understand the instruction, and then sends the corresponding instruction to the device controlling the lamp to realize the function of turning on or off the lamp.

[0041] The above only describes the preferred embodiments of the present embodiment, and it should be noted that, for those skilled in the art, without departing from the technical principles of the present embodiment, a plurality of improvements and modifications can be made, and the above-mentioned improvements and modifications are also regarded as the protection scope of the present embodiment.

Claims

1. A smart home appliance control system based on voice recognition, characterized in that: The system includes a microcontroller controller and the following modules electrically connected to the microcontroller controller: a voice recognition module, a wireless communication module, and a relay control module. The voice recognition module receives and recognizes user voice commands and converts them into text commands, which are then sent to the microcontroller controller. The microcontroller controller processes the received text commands and generates corresponding control commands. The wireless communication module receives the control commands and sends them to the relay control module. The relay control module drives the switching of household appliances according to the received control commands. The microcontroller controller includes an STM-32 microcontroller and a reset circuit, a crystal oscillator circuit, a BOOT option circuit, and a power supply circuit electrically connected to the STM-32 microcontroller.

2. The intelligent home appliance control system based on voice recognition according to claim 1, characterized in that: The voice recognition module adopts a multi-command recognition control mode.

3. The intelligent home appliance control system based on voice recognition according to claim 1, characterized in that: It also includes a stepper motor module, which includes a chip U12 and a connector J1. Pin 1 of chip U12 is connected to pin 32 of the microcontroller controller, pin 2 of chip U12 is connected to pin 31 of the microcontroller controller, pin 3 of chip U12 is connected to pin 30 of the microcontroller controller, pin 4 of chip U12 is connected to pin 29 of the microcontroller controller, pin 8 of chip U12 is grounded, and pin 9 of chip U12 is connected to the power supply VCC. Pin 1 of connector J1 is connected to pin 13 of chip U12, pin 2 of connector J1 is connected to pin 14 of chip U12, pin 3 of connector J1 is connected to pin 15 of chip U12, pin 4 of connector J1 is connected to pin 16 of chip U12, and pin 5 of connector J1 is connected to the power supply VCC.

4. The intelligent home appliance control system based on voice recognition according to claim 1, characterized in that: The reset circuit includes a switch 1, a resistor R13, and a capacitor C15. One end of the switch 1 is connected to one end of the resistor R13 and one end of the capacitor C15. The other end of the switch 1 and the other end of the capacitor C15 are both grounded. The other end of the resistor R13 is connected to the power supply. One end of the switch 1 is also connected to pin 41 of the STM-32 microcontroller.

5. A smart home appliance control system based on voice recognition according to claim 1, characterized in that: The crystal oscillator circuit includes capacitors C1 and C7 and crystal oscillator X1. One end of capacitor C1 is connected in parallel with one end of capacitor C7 and then grounded. The other end of capacitor C1 is connected to one end of crystal oscillator X1 and then connected to pin 42 of the STM-32 microcontroller. The other end of capacitor C7 is connected to the other end of crystal oscillator X1 and then connected to pin 43 of the STM-32 microcontroller.

6. The intelligent home appliance control system based on voice recognition according to claim 1, characterized in that: The BOOT option circuit includes a pin connector 3X2, a resistor R9, and a resistor R10. Pins 1 and 2 of the pin connector 3X2 are connected to the power supply VCC, and pins 5 and 6 of the pin connector 3X2 are grounded. Pins 3 and 4 of the pin connector 3X2 are connected to resistors R9 and R10 respectively, and then connected to pins BOOT0 and BOOT1 of the STM-32 microcontroller.

7. A smart home appliance control system based on voice recognition according to claim 1, characterized in that: The power supply circuit includes a self-locking switch SWITCH and a power supply U5. Pin 1 of the power supply U5 is connected to pin 1 of the self-locking switch SWITCH. Pin 2 of the power supply U5 is grounded. Pin 3 of the power supply U5 is connected to an external power supply. Pin 6 of the self-locking switch SWITCH is connected to pin 19 of the STM-32 microcontroller.

8. A smart home appliance control system based on voice recognition according to claim 1, characterized in that: The speech recognition module uses an LD3320 chip. The pins IRQ, CS, P0, P2, RST, A0, WR, and P1 of the speech recognition module are connected to the pins A15, B10, B15, B13, B11, A8, B12, and B14 of the STM-32 microcontroller, respectively.

Images