Intelligent voice remote control circuit of air conditioning system

Abstract

The utility model discloses an intelligent voice remote control circuit of an air conditioning system. The intelligent voice remote control circuit comprises a user operation terminal and a second communication circuit, the user operation terminal comprises a microprocessor MCU, a voice acquisition device, a voice processing circuit and a first communication circuit. The voice acquisition equipment is used for receiving a voice command signal of a user and transmitting the voice command signal to the voice processing circuit; the voice processing circuit is used for processing the voice command signal, converting the voice command signal into a digital signal and transmitting the digital signal to the first communication circuit; the first communication circuit is used for receiving the voice command signal converted into the digital signal and transmitting the voice command signal to the second communication circuit; and the second communication circuit receives the voice command signal and transmits the voice command signal to the air conditioner body, so that on-off and temperature regulation of the air conditioner body are controlled. The intelligent voice remote control circuit of the air conditioning system has the advantages of being capable of achieving remote control of an air conditioner through simple voice instructions, convenient and fast to operate and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of remote voice control technology, especially a kind of intelligent voice remote control circuit of air conditioning system. BACKGROUND

[0002] In today's intelligent era, people's convenience and intelligentization of home life are increasingly high. As an indispensable electrical equipment in family and office environment, the convenience and intelligent degree of its control mode directly affect the user's experience. Voice control is an intelligent control technology, which converts the input voice signal into voice instruction input to the controlled device through intelligent voice processing, and the controlled device recognizes and understands the human voice instruction, and then executes the corresponding operation.

[0003] Traditional air conditioner control mainly relies on remote control operation or manual panel control, which has many inconveniences. Manual panel control needs user to walk to the air conditioner to operate, which is very inconvenient for the old or disabled people, or when using air conditioner in large space such as villa, large office area, etc. In addition, in the morning, especially in the morning of winter in the south without heating area, people want to open the living room air conditioner in advance to adjust the temperature of the living room in advance, so that people can go out and in without catching a cold when wearing pajamas, which needs to get up to the living room to open the air conditioner with remote control, which is very inconvenient.

[0004] Moreover, with the change of people's lifestyle, the demand for remote control of air conditioner is increasing. When people come home, they want to start the air conditioner in advance to adjust the temperature of home or office to the ideal temperature, so that they can enjoy the cool or warm comfortable environment when they come home. However, the existing remote control method often cannot achieve this purpose. SUMMARY

[0005] The utility model provides a kind of intelligent voice remote control circuit of air conditioning system to realize the remote control of air conditioner by simple voice instruction and improve the convenience and intelligent degree of air conditioner control to avoid the deficiencies existing in the prior art.

[0006] The utility model solves technical problems by using the following technical solutions.

[0007] The utility model provides a kind of intelligent voice remote control circuit of air conditioning system, including user operation terminal and second communication circuit;

[0008] The user operation terminal includes microprocessor MCU, voice acquisition device, voice processing circuit and first communication circuit.

[0009] The voice collecting device is used for accepting the voice instruction signal of the user and transmitting the voice instruction signal to the voice processing circuit.

[0010] The voice processing circuit is used for processing the voice instruction signal and converting the voice instruction signal into a digital signal and transmitting the digital signal to the first communication circuit.

[0011] The first communication circuit is used for accepting the voice instruction signal converted into the digital signal and transmitting the voice instruction signal to the second communication circuit.

[0012] The structure of the intelligent voice remote control circuit of the air conditioning system of the utility model also has the following characteristics:

[0013] Further, the voice collecting device comprises an electret microphone, audio signal output terminals IN+ and IN-, capacitors C1-C3 and resistors R1-R3.

[0014] Further, the voice processing circuit comprises a voice chip U1, a capacitor C4, a light-emitting diode LED1, a loudspeaker SP, a button SW-PB1 and a button SW-PB2.

[0015] Further, the voice chip U1 is of the model NV020C.

[0016] Further, the first communication circuit is a WIFI communication circuit.

[0017] Further, the WIFI communication circuit comprises a Wi-Fi chip U4, resistors R4 and R5, resistors RN2A, RN2B and RN2C, a capacitor C5, a light-emitting diode LED2 and a switch S1.

[0018] Further, the Wi-Fi chip U4 is a chip ESP8266.

[0019] Further, the light-emitting diode LED2 is a blue light diode.

[0020] Further, the microprocessor MCU is of the model STM32F103C8T6, and the microprocessor MCU is connected with a crystal oscillator circuit, a reset circuit and resistors R7-R8 and capacitors C9-C10; the crystal oscillator circuit comprises a crystal oscillator X1 and capacitors C6-C7; the reset circuit comprises a switch SW1, a resistor R6 and a capacitor C8.

[0021] Compared with the prior art, the utility model has the beneficial effects that:

[0022] The utility model discloses an intelligent voice remote control circuit of air conditioning system, including user operation terminal, air conditioning controller and air conditioning body, user operation terminal includes microprocessor MCU, voice collection equipment, speech processing circuit and first communication circuit, voice collection equipment is used for accepting the voice instruction signal of user and will voice instruction signal transmission speech processing circuit, speech processing circuit is used for processing voice instruction signal and converts digital signal transmission first communication circuit, first communication circuit is used for accepting the voice instruction signal of conversion digital signal and will it transmission air conditioning controller's second communication circuit, second communication circuit receives voice instruction signal and will it transmission air conditioning body, thereby control air conditioning body's switch and temperature regulation.

[0023] The intelligent voice remote control circuit of air conditioning system has the advantages of remote control of air conditioner through simple voice instruction, convenient and fast operation and the like. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the structure block diagram of the intelligent voice remote control circuit of air conditioning system of the utility model.

[0025] Figure 2 It is the circuit diagram of voice collection equipment of the intelligent voice remote control circuit of air conditioning system of the utility model.

[0026] Figure 3 It is the circuit diagram of speech processing circuit of the intelligent voice remote control circuit of air conditioning system of the utility model.

[0027] Figure 4 It is the circuit diagram of WIFI communication circuit of the intelligent voice remote control circuit of air conditioning system of the utility model.

[0028] Figure 5 It is the pin diagram of microprocessor MCU of the intelligent voice remote control circuit of air conditioning system of the utility model.

[0029] The utility model is further explained below through specific embodiment, and combines the drawings. DETAILED DESCRIPTION

[0030] Refer to Figures 1-5 The utility model discloses an intelligent voice remote control circuit of air conditioning system, including user operation terminal and second communication circuit,

[0031] The user operation terminal includes microprocessor MCU, voice collection equipment, speech processing circuit and first communication circuit,

[0032] The user operation terminal is used to issue voice instructions to control the air conditioning system. In specific implementation, the user operation terminal of the present application can be made into a small card structure or a key string pendant structure, and placed together with the key or in the mobile phone shell, so as to facilitate people to use it at any time.

[0033] The voice collection device is used to accept the voice instruction signal of the user and transmit the voice instruction signal to the voice processing circuit;

[0034] The voice collection device (such as a microphone) is connected to the voice processing circuit through an analog signal line. The voice collection device is responsible for obtaining the voice instruction of the user and converting it into an analog electric signal.

[0035] The voice processing circuit is used to process the voice instruction signal and convert it into a digital signal to transmit to the first communication circuit;

[0036] The voice processing circuit usually contains an analog-to-digital converter (ADC) and a digital signal processing chip. It converts the analog voice signal into a digital signal and performs preliminary processing such as noise reduction, feature extraction, etc. Then, the processed digital signal is transmitted to the microprocessor MCU through the internal data bus.

[0037] The first communication circuit is used to accept the voice instruction signal converted into a digital signal and transmit it to the second communication circuit;

[0038] The first communication circuit is connected with the microprocessor MCU through a standard communication interface. The microprocessor MCU sends the processed voice instruction data to the first communication circuit, which transmits the data wirelessly to the second communication circuit.

[0039] The second communication circuit receives the voice instruction signal and transmits it to the air conditioner body, thereby controlling the switching and temperature regulation of the air conditioner body. In specific implementation, the second communication circuit can be arranged on the air conditioner controller or the air conditioner body. If the second communication circuit is arranged on the air conditioner controller, the air conditioner controller sends the control instruction to the air conditioner body.

[0040] The second communication circuit receives the wireless voice instruction signal from the user operation terminal. The second communication circuit transmits the received voice instruction data to the main control chip in the air conditioner controller or the air conditioner body through the communication interface. The main control chip in the air conditioner controller or the air conditioner body makes logical judgment according to the received voice instruction. For example, if the instruction of "turning on the air conditioner" is received, an opening signal will be sent to the power supply control circuit of the air conditioner body; if the instruction of "setting the temperature to 25 degrees" is received, the parameters of the temperature control circuit will be adjusted, thereby realizing the regulation of the temperature of the air conditioner body.

[0041] In specific implementation, the power supply line of the air conditioner body can be controlled through a relay or other electronic switching element.

[0042] The intelligent voice remote control circuit of the air conditioning system can send voice instructions through the user operation terminal, collect voice signals through the voice acquisition device, and transmit the voice signals to the voice processing unit. The air conditioner controller or the air conditioner body can accurately control the air conditioner according to the instructions, and realize the opening, closing, temperature adjustment and other operations of the air conditioner. The user operation terminal device has voice input and output functions, can receive the user's voice instructions and send them to the voice acquisition device, and can also receive the feedback information of the air conditioning system and display it to the user in the form of voice or text. The voice processing circuit uses advanced voice recognition technology and semantic analysis technology to accurately extract the user's voice instructions and convert them into control signals after noise reduction, filtering and other processing of the collected voice signals.

[0043] The intelligent voice remote control circuit of the air conditioning system can let the user realize remote control of the air conditioner through simple voice instructions, and let people realize remote control of the air conditioner within a distance of several hundred meters from the room, greatly improving the convenience and intelligence of the air conditioner, and meeting the needs of modern people for comfortable and convenient home life.

[0044] In specific implementation, the voice acquisition device includes an electret microphone, audio signal output terminals IN+ and IN-, capacitors C1-C3, and resistors R1-R3.

[0045] As shown in Figure 2 The connection relationship of each electronic component is shown in Figure 2 The electret microphone is connected to the audio signal input terminals IN+ and IN-, and the electret microphone needs to be provided with a suitable bias voltage for normal operation. When external sound is transmitted, the internal diaphragm of the electret microphone vibrates to change its capacitance characteristics, and then generates a weak audio signal varying with sound at both ends. The audio signal is coupled through coupling capacitors C1 and C2 to pass direct current and pass alternating current, and then the audio signal is coupled through audio input pins IN+ and IN- to the subsequent voice processing circuit to complete the preliminary acquisition and conversion of sound to electrical signal.

[0046] In particular implementation, the voice processing circuit includes a voice chip U1, a capacitor C4, a light-emitting diode LED1, a speaker SP, a button SW-PB1 and a button SW-PB2.

[0047] In particular implementation, the voice chip U1 is of model NV020C.

[0048] As shown in Figure 3 is a circuit diagram of the voice processing circuit, and the connection relationship of each electronic component is as shown in Figure 3 . The voice processing chip pin 8 is connected with the pin 1 of the connection terminal P1 of the voice collection device in Figure 2 , and the audio signal collected by the voice collection device is input to the voice chip U1. After the power supply VDD is turned on, the capacitor C1 filters the power supply, so as to ensure that the voice chip U1 obtains stable power supply. By pressing the button SW-PB1 and the button SW-PB2, a control signal can be input to the voice chip U1, so as to trigger the corresponding function of the voice chip U1. The voice chip U1 can perform audio output or control external devices such as a speaker or other audio devices through the PWM1 / DAC and PWM2 pins. The light-emitting diode LED1 is turned on or off according to the working state of the voice chip U1, so as to provide visual feedback.

[0049] NV020C is a voice chip with stable performance, which can work normally in extremely harsh noise environment without any peripheral circuit. It has a wide temperature and voltage range, and a normal working range of 2V-5.5V, which makes up for the anti-interference ability of the voice chips on the market. It can customize a voice solution within 20 seconds, while the same series of NV040C, NV080C and NV180C voice chips can achieve a voice solution within 40 seconds, 80 seconds and 180 seconds respectively. The appropriate voice chip model can be selected according to different voice length requirements. NV020C has the advantages of good sound quality, stability and durability.

[0050] In particular implementation, the first communication circuit is a WIFI communication circuit.

[0051] In particular implementation, the WIFI communication circuit includes a Wi-Fi chip U4, a resistor R4, a resistor R5, a resistor RN2A, a resistor RN2B, a resistor RN2C, a capacitor C5, a light-emitting diode LED2 and a switch S1.

[0052] As shown in Figure 4 is a circuit diagram of the WIFI communication circuit, and the connection relationship of each electronic component is as shown in Figure 4 . The WIFI communication circuit is powered by 3.3V power supply provided by the microcontroller MCU, and the Figure 43.3V connection points can be seen in many places. These 3.3V power supply for Wi-Fi chip U2, LED1 and other components provide working voltage. The 0.1uF capacitor C5 is connected between the 3.3V power supply and GND, which plays a role in power filtering, filtering out high-frequency noise and ripple in the power supply, ensuring that the components in the circuit obtain stable voltage. The TXD pin (pin 22) is used for data transmission, and the RXD pin (pin 21) is used for data reception, forming a serial communication (UART) interface. External devices can transmit data with ESP8266 by connecting the TXD pin, RXD pin, for debugging, configuration and sending instructions and other operations. The ADC pin (pin 2) can be used to connect analog sensors to convert analog signals to digital signals for chip processing, such as connecting temperature, light and other sensors. GPIO0-GPIO15 pins are general input / output pins that can be used to connect various external components to achieve different functions. The communication distance of WiFi is about 100-300 meters under ideal conditions. Therefore, users can use the intelligent voice remote control circuit of the air conditioning system of the utility model to open the air conditioner in advance on the way home, and enjoy a cool or warm home environment as soon as they enter the door.

[0053] In specific implementation, the Wi-Fi chip U4 is a chip ESP8266.

[0054] Chip ESP8266 is a low-cost, high-performance Wi-Fi module developed by Espressif Systems. Chip ESP8266 integrates Wi-Fi functionality and TCP / IP protocol stack, and can communicate with the host controller through the serial port, with many advantages, including low power consumption, high integration, low price, stability and strong programmability.

[0055] 1. Chip ESP8266 is a low-power, high-integration WiFi chip with a built-in 32-bit processor, supporting real-time operating systems and WiFi protocols, suitable for mobile devices, wearable electronic products and Internet of Things applications. It has the characteristics of high integration, stable performance, supports 802.11 wireless standards, and frequency range is between 2.4GHz and 2.5GHz. The chip also contains a storage controller, serial port, USB port and other functions, and has low power management technology.

[0056] 2. The price of chip ESP8266 is very low, and a development board with USB-to-serial chip, power management circuit, LED indicator, reset button and other peripheral circuits can be easily bought on the market for 12-30 yuan, such as NodeMCU or Wemos D1 mini. These development boards can be directly connected to the computer through the USB line, and programmed using Arduino IDE or other IDE.

[0057] 3、The advantages of the chip ESP8266 include high integration, energy saving, good stability, strong programmability, active development ecosystem, modular design, and perfect software and hardware support. It is suitable for smart home, industrial wireless control, sensor network, and WiFi hotspot and other Internet of Things application scenarios.

[0058] In specific implementation, the light-emitting diode LED 2 is a blue light diode.

[0059] In specific implementation, the model of the microprocessor MCU is STM32F103C8T6, and the microprocessor MCU is connected with a crystal oscillator circuit, a reset circuit, and resistors R7-R8 and capacitors C9-C10; the crystal oscillator circuit includes a crystal oscillator X1 and capacitors C6-C7; the reset circuit includes a switch SW1, a resistor R6, and a capacitor C8.

[0060] As shown in Figure 5 is a circuit diagram of the microprocessor MCU, and the connection relationship of each electronic component is as shown in Figure 5 .

[0061] STM32F103C8T6 is a 32-bit microcontroller based on ARM Cortex-M3 core launched by STMicroelectronics. It has the characteristics of high performance, low cost, and low power consumption, and is widely used in various embedded systems. The maximum working frequency can reach 72MHz, which can quickly process complex tasks. STM32F103C8T6 has 64KB of flash memory (Flash) for storing program code and 20KB of static random access memory (SRAM) for temporary data storage. The microcontroller has 48 pins, each with specific functions. Some pins of STM32F103C8T6 are used for general-purpose input / output (GPIO) and can be connected to external devices such as keys, LEDs, sensors, etc. STM32F103C8T6 also has some pins for connecting various communication interfaces, such as universal asynchronous receiver / transmitter (UART), serial peripheral interface (SPI), and integrated circuit bus (I2C), to realize communication with other devices. The analog-to-digital converter (ADC) pin of STM32F103C8T6 is used to collect external analog signals such as temperature and voltage.

[0062] In specific implementation, other wireless communication technologies such as Bluetooth and ZigBee can be used instead of Wi-Fi communication mode to realize remote communication between the user operation terminal device and the air conditioning system at different distances.

[0063] Air conditioner controller: receives voice instructions from the communication module and controls the operating state of the air conditioner according to the instructions. The air conditioner controller can be integrated on the air conditioner body or connected as a separate device. It can control the functions of turning on, turning off, temperature adjustment, wind speed adjustment, mode switching, etc.

[0064] Air conditioner body: realizes the functions of refrigeration, heating, ventilation, etc. of the air conditioner. The air conditioner body should have good performance and reliability to meet the needs of users.

[0065] The user issues voice instructions on the user operation terminal device, such as "turn on the air conditioner", "adjust the temperature up", etc.

[0066] After the voice acquisition device collects the user's voice instructions, it converts them into electrical signals and transmits them to the voice processing unit.

[0067] The voice processing unit processes the collected voice signals through noise reduction, filtering, etc. to improve signal quality. Then it converts the voice signals into text instructions using voice recognition technology and performs semantic analysis to determine the user's specific control requirements.

[0068] The voice processing unit sends the processed control signals to the air conditioner controller through the communication module.

[0069] After receiving the control signal, the air conditioner controller controls the air conditioner body according to the instructions. For example, when receiving the "turn on the air conditioner" instruction, the controller will start the power of the air conditioner; when receiving the "adjust the temperature up" instruction, the controller will adjust the temperature setting of the air conditioner.

[0070] During the operation of the air conditioner body, it will feed back the current operating state information to the voice processing unit through the communication module, and the voice processing unit will transmit it to the user operation terminal device. The user can real-time understand the operating state of the air conditioner through the user operation terminal device.

[0071] The intelligent voice remote control circuit of the air conditioning system has the following characteristics.

[0072] 1、Convenient and efficient

[0073] Break free from the shackles of traditional remote controllers. Users can easily control the air conditioner through voice instructions without having to search for the remote controller or walk in front of the air conditioner panel to operate, greatly improving the convenience of operation. No matter where the user is in the room, or in different rooms, or even at a distance of hundreds of meters from the room, they can accurately convey voice instructions to achieve remote control of the air conditioner without moving their bodies to adjust the air conditioner state, making life more relaxed and efficient.

[0074] 2、Intelligent and accurate

[0075] The system can accurately identify various voice commands, including different accents, speech rates and tones, ensuring that the user's instructions can be correctly executed. At the same time, through intelligent analysis, it can understand the user's ambiguous instructions such as "a little cold" and "too hot", and automatically adjust the temperature, wind speed and other parameters of the air conditioner, realizing intelligent and accurate control.

[0076] 3、Remote control

[0077] The user can remotely control the air conditioner at a distance from the air conditioner through the user operation terminal, and can control the running state of the air conditioner at home at any time. In addition, the air conditioner can be started in advance at a distance, and the comfortable temperature can be enjoyed when arriving home. At the same time, the air conditioner state can be remotely adjusted when walking in the community or when arriving home, when parking in the underground garage and preparing to go home, and when being close to home, so as to adjust the indoor temperature to the appropriate temperature and provide better care for the family.

[0078] 4、Energy saving and environmental protection

[0079] The intelligent voice remote control can avoid unnecessary energy waste. For example, when the user forgets to turn off the air conditioner when going downstairs for a walk, or forgets whether the air conditioner is turned off when already in the underground garage preparing to go to work, the air conditioner can be turned off in time through remote control.

[0080] It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0081] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. An intelligent voice remote control circuit for an air conditioning system, characterized by, The user operation terminal and the second communication circuit are included; The user operation terminal includes a microprocessor MCU, a voice collection device, a voice processing circuit and a first communication circuit; The voice collection device is used for accepting voice instruction signals of the user and transmitting the voice instruction signals to the voice processing circuit; The voice processing circuit is used for processing the voice instruction signals and converting the voice instruction signals into digital signals and transmitting the digital signals to the first communication circuit; The first communication circuit is used for accepting the voice instruction signals converted into the digital signals and transmitting the voice instruction signals to the second communication circuit; The second communication circuit receives the voice instruction signals and transmits the voice instruction signals to the air conditioner body, so as to control the on-off and temperature regulation of the air conditioner body.

2. The intelligent voice remote control circuit of an air conditioning system according to claim 1, wherein, The voice collection device includes an electret microphone, an audio signal output terminal IN+ and IN-, capacitors C1-C3 and resistors R1-R3.

3. The intelligent voice remote control circuit of an air conditioning system according to claim 1, wherein, The voice processing circuit includes a voice chip U1, a capacitor C4, a light-emitting diode LED1, a loudspeaker SP, a button SW-PB1 and a button SW-PB2.

4. The intelligent voice remote control circuit of an air conditioning system according to claim 3, wherein, The voice chip U1 is of the model NV020C.

5. The intelligent voice remote control circuit of an air conditioning system according to claim 1, wherein, The first communication circuit is a WIFI communication circuit.

6. The intelligent voice remote control circuit of an air conditioning system according to claim 5, wherein, The WIFI communication circuit includes a Wi-Fi chip U4, resistors R4 and R5, resistors RN2A, RN2B and RN2C, a capacitor C5, a light-emitting diode LED2 and a switch S1.

7. The intelligent voice remote control circuit of an air conditioning system according to claim 6, wherein, The Wi-Fi chip U4 is a chip ESP8266.

8. The intelligent voice remote control circuit of claim 6, wherein, The light-emitting diode LED2 is a blue light diode.

9. The intelligent voice remote control circuit of an air conditioning system according to claim 1, wherein, The microprocessor MCU is of the model STM32F103C8T6, and the microprocessor MCU is connected with a crystal circuit, a reset circuit and resistors R7-R8 and capacitors C9-C10; the crystal circuit includes a crystal X1 and capacitors C6-C7; the reset circuit includes a switch SW1, a resistor R6 and a capacitor C8.

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