Intelligent voice control circuit for water purifier

Abstract

The utility model discloses an intelligent voice control circuit for a water purifier, which can be applied to the water purifier and comprises a single chip microcomputer, a voice input module, an internet of things module and a voice playing module, and the voice input module is used for collecting user voice signals and transmitting the user voice signals to the single chip microcomputer; the Internet of Things module is electrically connected with the single-chip microcomputer and the voice playing module, the water purifier is connected to the Internet of Things, and the voice playing module is used for playing a prompt tone to a user; a user can control the water purifier through voice, so that the user can start, close or adjust the water purifier without manually touching the water purifier, and voice control provides a more flexible alternative scheme under the condition that the user has water on the hand or is inconvenient to operate; and the Internet of Things module also enables the water purifier to access the Internet of Things, so that remote communication and control can be carried out.

Description

Technical Field

[0001] This application relates to the field of water purifiers, and particularly to an intelligent voice control circuit for a water purifier. Background Art

[0002] As an indispensable device in modern families, the functions and intelligent levels of water purifiers directly affect the user experience. With the continuous progress of technology, water purifiers have begun to incorporate intelligent voice technology. The addition of this emerging function not only improves the operation convenience but also enhances the device's interaction experience. However, there is still room for improvement and optimization in the intelligent voice control circuits of existing water purifiers. Summary of the Utility Model

[0003] To solve the above technical problems, this application provides an intelligent voice control circuit for a water purifier, which includes a single-chip microcomputer, a voice input module, an Internet of Things module, and a voice playback module. The voice input module is used to collect user voice signals and is electrically connected to the single-chip microcomputer; the Internet of Things module is electrically connected to the single-chip microcomputer and the voice playback module, and the voice playback module is used to play prompt sounds to the user. Among them, the Internet of Things module includes a chip EC800M, and the chip EC800M is in serial communication connection with the single-chip microcomputer. The voice playback module includes an audio amplifier chip NS4150 and a voice player. The power supply terminal of the audio amplifier chip NS4150 is electrically connected to a first DC power supply. The non-inverting input terminal and the inverting input terminal of the audio amplifier chip NS4150 are respectively connected to the positive output terminal and the negative output terminal of the chip EC800M, and the non-inverting output terminal and the inverting output terminal of the audio amplifier chip NS4150 are electrically connected to the voice player.

[0004] In some embodiments of this application, the intelligent voice control circuit for a water purifier further includes a touch button control circuit. The touch button control circuit includes multiple touch buttons representing different functions and a touch chip SC04B. Each touch button is electrically connected to a touch signal input terminal of the touch chip SC04B, and each touch signal output terminal corresponding to the touch chip SC04B is electrically connected to a touch signal sampling terminal of the single-chip microcomputer.

[0005] In some embodiments of the present application, the water purifier has a first heater and a second heater cascaded with the first heater. The intelligent voice control circuit for the water purifier further includes a first temperature detection circuit, a second temperature detection circuit, and a third temperature detection circuit. The first temperature detection circuit is used to detect the temperature of the purified water after being heated by the first heater. The second temperature detection circuit is used to detect the temperature of the purified water after being heated by the second heater. The third temperature detection circuit is used to detect the ambient temperature inside the water purifier. Among them, the first temperature detection circuit includes a first temperature detection sensor, the second temperature detection circuit includes a second temperature detection sensor, and the third temperature detection circuit includes a third temperature detection sensor. The power supply terminals of the first temperature detection sensor, the second temperature detection sensor, and the third temperature detection sensor are all electrically connected to a first DC power supply. The signal terminal of the first temperature detection sensor is electrically connected to the first temperature sampling terminal of the single-chip microcomputer. The signal terminal of the second temperature detection sensor is electrically connected to the second temperature sampling terminal of the single-chip microcomputer. The signal terminal of the third temperature detection sensor is electrically connected to the third temperature sampling terminal of the single-chip microcomputer.

[0006] In some embodiments of the present application, the intelligent voice control circuit for the water purifier further includes a display circuit. The display circuit includes a display driver chip TM1681 and a digital tube. The display driver chip TM1681 is electrically connected to the single-chip microcomputer and the digital tube.

[0007] In some embodiments of the present application, the intelligent voice control circuit for the water purifier further includes a hot water valve control circuit. The hot water valve control circuit is used to control the opening or closing of the hot water valve and includes a hot water valve control field effect transistor. The drain of the hot water valve control field effect transistor is electrically connected to the negative electrode of the hot water valve. The positive electrode of the hot water valve is electrically connected to a second DC power supply. The gate of the hot water valve control field effect transistor is electrically connected to a first hot water valve control resistor and then electrically connected to the hot water valve control terminal of the single-chip microcomputer. The gate of the hot water valve control field effect transistor is also electrically connected to a second hot water valve control resistor and then grounded. The source of the hot water valve control field effect transistor is grounded.

[0008] In some embodiments of the present application, the intelligent voice control circuit for the water purifier further includes a disinfection lamp control circuit. The disinfection lamp control circuit is used to control the opening or closing of the disinfection lamp and includes a disinfection control field effect transistor. The drain of the disinfection control field effect transistor is electrically connected to the negative electrode of the disinfection lamp. The positive electrode of the disinfection lamp is electrically connected to a second DC power supply. The gate of the disinfection control field effect transistor is electrically connected to a first disinfection control resistor and then electrically connected to the disinfection lamp control terminal of the single-chip microcomputer. The gate of the disinfection control field effect transistor is also electrically connected to a second disinfection control resistor and then grounded. The source of the disinfection control field effect transistor is grounded.

[0009] In some embodiments of the present application, the intelligent voice control circuit for the water purifier further includes a water leakage detection circuit. The water leakage detection circuit includes a water leakage detection sensor. The power supply terminal of the water leakage detection sensor is electrically connected to a third DC power supply. The signal terminal of the water leakage detection sensor is electrically connected to a first water leakage detection resistor and then connected to the water leakage signal sampling terminal of the single-chip microcomputer. The signal terminal of the water leakage detection sensor is also electrically connected to a second water leakage detection resistor and then grounded.

[0010] In some embodiments of the present application, the intelligent voice control circuit for the water purifier further includes an alarm circuit. The alarm circuit includes a buzzer. The positive electrode of the buzzer is electrically connected to a second DC power supply. The negative electrode of the buzzer is electrically connected to the collector of the alarm control triode. The base of the alarm control triode is electrically connected to a first alarm voltage-dividing resistor and then electrically connected to the alarm control terminal of the single-chip microcomputer. The base of the alarm control triode is also electrically connected to a second alarm voltage-dividing resistor and then grounded.

[0011] In some embodiments of the present application, the intelligent voice control circuit for the water purifier further includes a flow rate detection circuit. The flow rate detection circuit is used to detect the water flow rate. The flow rate detection circuit includes a flow meter. The power supply terminal of the flow meter is electrically connected to a first DC power supply. The signal terminal of the flow meter is electrically connected to a first flow rate detection resistor and a second flow rate detection resistor and then connected to the first DC power supply. The electrical connection point of the first flow rate detection resistor and the second flow rate detection resistor is electrically connected to the flow rate sampling terminal of the single-chip microcomputer.

[0012] In some embodiments of the present application, the intelligent voice control circuit for the water purifier further includes a power supply circuit. The power supply circuit includes a chip XL1509. The input terminal of the chip XL1509 is electrically connected to a second DC power supply, and the output terminal outputs a first DC power supply.

[0013] Advantages of the present application: The present utility model discloses an intelligent voice control circuit for a water purifier, which can be applied to a water purifier. It includes a single-chip microcomputer, a voice input module, an Internet of Things module, and a voice playback module. The voice input module is used to collect user voice signals and transmit them to the single-chip microcomputer. The Internet of Things module is electrically connected to the single-chip microcomputer and the voice playback module, connects the water purifier to the Internet of Things, and is used to play a prompt tone to the user through the voice playback module. The user can control the water purifier through voice, so that the user can realize the operations of turning on, turning off, or adjusting the water purifier without manually touching the water purifier. In the case where the user's hands are wet or there are other inconvenient operations, voice control also provides a more flexible alternative. The Internet of Things module also enables the water purifier to be connected to the Internet of Things, capable of remote communication and control. Description of the Drawings

[0014] To more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the attached drawings required for the description of the embodiments. Obviously, the attached drawings in the following description are only some embodiments of the application. For those of ordinary skill in the art, without creative efforts, other attached drawings can also be obtained based on these attached drawings, where:

[0015] Figure 1 is a schematic diagram of the single-chip microcomputer in the intelligent voice control circuit for a water purifier of the present utility model;

[0016] Figure 2 is a schematic diagram of the chip EC800M in the intelligent voice control circuit for a water purifier of the present utility model;

[0017] Figure 3 is a schematic diagram of the audio amplification chip NS4150 in the intelligent voice control circuit for a water purifier of the present utility model;

[0018] Figure 4 is a schematic diagram of the touch chip SC04B in the intelligent voice control circuit for a water purifier of the present utility model;

[0019] Figure 5 is a schematic diagram of the first temperature detection circuit in the intelligent voice control circuit for a water purifier of the present utility model;

[0020] Figure 6 and Figure 7 is a schematic diagram of the display circuit in the intelligent voice control circuit for a water purifier of the present utility model;

[0021] Figure 8 is a schematic diagram of the hot water valve control circuit in the intelligent voice control circuit for a water purifier of the present utility model;

[0022] Figure 9 is a schematic diagram of the disinfection lamp control circuit in the intelligent voice control circuit for a water purifier of the present utility model;

[0023] Figure 10 is a schematic diagram of the water leakage detection circuit in the intelligent voice control circuit for a water purifier of the present utility model;

[0024] Figure 11 is a schematic diagram of the alarm circuit in the intelligent voice control circuit for a water purifier of the present utility model;

[0025] Figure 12 is a schematic diagram of the flow rate detection circuit in the intelligent voice control circuit for a water purifier of the present utility model;

[0026] Figure 13 is a schematic diagram of the power supply circuit in the intelligent voice control circuit for a water purifier of the present utility model. Detailed implementation manners

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other alternative implementation manners obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0028] As Figures 1 to 10 shown, the present application discloses an intelligent voice control circuit for a water purifier. The intelligent voice control circuit can be applied in a water purifier and can control the water purifier and various electronic components inside the water purifier through voice, so that the user can realize the operations of turning on, turning off or adjusting the water purifier without manually touching the water purifier. In the case where the user's hands are wet or there are other inconveniences in operation, voice control provides a more flexible alternative solution. For example, the user can customize a personalized water use mode through voice commands, such as setting a specific water temperature or water volume; report the water quality status, such as the TDS value, so that the user can have an intuitive understanding of the drinking water quality, remind the user to replace the filter element, and maintain the best filtration performance, etc.

[0029] Combined with Figures 1 to 13 , as an embodiment of the intelligent voice control circuit for a water purifier, the intelligent voice control circuit includes a single-chip microcomputer, a voice input module, an Internet of Things module, and a voice playback module. Among them, the voice input module is used to collect user voice signals. The voice input module is electrically connected to the single-chip microcomputer and transmits the collected voice signals to the single-chip microcomputer; the Internet of Things module is electrically connected to the single-chip microcomputer and the voice playback module, so that the water purifier can be connected to the Internet of Things and can perform remote communication. In addition, the single-chip microcomputer also controls the voice playback module through the Internet of Things module and plays a prompt tone to the user through the voice playback module.

[0030] Figure 1 As a schematic diagram of the single-chip microcomputer, the voice input module can be a voice recognition chip LD3320 or chip SYN8086 electrically connected to the single-chip microcomputer to recognize the user's voice; the Internet of Things module includes a chip EC800M and a SIM electrically connected to the chip EC800M, so as to connect the water purifier to the Internet of Things and realize remote communication and control; Figure 2 As a schematic diagram of the chip EC800M, the chip EC800M is serially communicated with the single-chip microcomputer; the voice playback module includes an audio amplifier chip NS4150 and a voice player, and can play voice to the user through the voice playback module, Figure 3 As a schematic diagram of the audio amplifier chip NS4150.

[0031] In Figure 3Among them, the power supply terminal VCC of the audio amplifier chip NS4150 is electrically connected to the first DC power supply +5V, and the non-inverting input terminal INP and the inverting input terminal INN of the audio amplifier chip NS4150 are respectively connected to Figure 2 the forward output terminal spk_p and the reverse output terminal spk_n of the chip EC800M in it. The non-inverting output terminal Vop and the inverting output terminal Von of the audio amplifier chip NS4150 are electrically connected to the broadcast player through the interface J17. The audio amplifier chip NS4150 can play the prompt sound of the water purifier through the broadcast player.

[0032] Furthermore, in Figure 3 it, the non-inverting input terminal INP of the audio amplifier chip NS4150 is electrically connected to the resistor R91 and the capacitor C49 and then connected to the forward output terminal spk_p of the chip EC800M. The inverting input terminal INN of the audio amplifier chip NS4150 is electrically connected to the resistor R93 and the capacitor C52 and then connected to the forward output terminal spk_n of the chip EC800M. The control terminal of the audio amplifier chip NS4150 is electrically connected to the resistor R89 and then connected to the first DC power supply +5V.

[0033] Furthermore, as Figure 4 shown, the intelligent voice control circuit for the water purifier further includes a touch button control circuit. The touch button control circuit can control the water purifier through touch buttons, that is, the water purifier still retains the traditional touch control on the basis of voice control. As Figure 4 shown, the touch button control circuit includes a plurality of touch buttons (not shown in the figure) representing different functions and a touch chip SC04B. Each touch button is electrically connected to a resistor and then connected to a touch signal input terminal (CIN0~CIN3) of the touch chip SC04B. Each touch signal output terminal (OUT0~OUT3) corresponding to the touch chip SC04B is electrically connected to Figure 1 a touch signal sampling terminal of the single-chip microcomputer in it. For example, after touching the water outlet button, the single-chip microcomputer controls the water purifier to flow out purified water.

[0034] Furthermore, in this embodiment, the water purifier has a first heater and a second heater cascaded with the first heater. Among them, the first heater heats the purified water to a first temperature value (for example, 50°C), and the second heater heats the purified water heated by the first heater from the first temperature value to a second temperature value (for example, 100°C). The first temperature value is less than the second temperature value. In this way, the heating of the purified water can be realized and the heating efficiency can be improved.

[0035] Further, the intelligent voice control circuit for the water purifier further includes a first temperature detection circuit, a second temperature detection circuit, and a third temperature detection circuit. The first temperature detection circuit is used to detect the temperature of the purified water after being heated by the first heater, the second temperature detection circuit is used to detect the temperature of the purified water after being heated by the second heater, and the third temperature detection circuit is used to detect the ambient temperature inside the water purifier. Among them, the first temperature detection circuit includes a first temperature detection sensor, the second temperature detection circuit includes a second temperature detection sensor, and the third temperature detection circuit includes a third temperature detection sensor. The power supply terminals of the first temperature detection sensor, the second temperature detection sensor, and the third temperature detection sensor are all electrically connected to the first DC power supply. The signal terminal of the first temperature detection sensor is electrically connected to the first temperature sampling terminal of the single-chip microcomputer, the signal terminal of the second temperature detection sensor is electrically connected to the second temperature sampling terminal of the single-chip microcomputer, and the signal terminal of the third temperature detection sensor is electrically connected to the third temperature sampling terminal of the single-chip microcomputer.

[0036] In this embodiment, the circuit compositions of the first temperature detection circuit, the second temperature detection circuit, and the third temperature detection circuit are the same. This embodiment takes the first temperature detection circuit as an example for illustration. As Figure 5 shown, the first temperature detection circuit is electrically connected to the first temperature detection sensor through the interface J5. The power supply terminal (the first terminal of the interface J5) of the first temperature detection sensor is electrically connected to the first DC power supply +5V. The signal terminal (the second terminal of the interface J5) of the first temperature detection sensor is electrically connected to the first temperature detection resistor R31 and then connected to Figure 1 the first temperature sampling terminal P1.6 of the single-chip microcomputer in

[0037] Further, as Figure 6 and Figure 7 shown, the intelligent voice control circuit for the water purifier further includes a display circuit. The display circuit includes a display driver chip TM1681 and a digital tube. The display driver chip TM1681 is electrically connected to the single-chip microcomputer and the digital tube. Specifically, in Figure 6 , the power supply terminal LED_VDD of the display driver chip TM1681 is electrically connected to the first DC power supply +5V. The data terminal DATA, the clock terminal WR, the RD terminal, and the CS terminal of the display driver chip TM1681 are all electrically connected to the single-chip microcomputer in Figure 1 , and are also respectively electrically connected to a pull-up resistor and then connected to the first DC power supply +5V; Figure 7It is a schematic diagram of a digital tube. The segment selection pins (a, b, c, d, e, f, g, DP) of the digital tube are electrically connected to the segment output pins (R0W0~R0W7) of the display driver chip TM1681, and the common pin com1 of the digital tube is electrically connected to the common pin COM6 of the display driver chip TM1681. The single-chip microcomputer can drive the digital tube to display through the display driver chip TM1681, such as displaying the water outlet time, working time, etc.

[0038] As Figure 8 shown, the intelligent voice control circuit for the water purifier further includes a hot water valve control circuit. The hot water valve control circuit is used to control the opening or closing of the hot water valve. When the hot water valve is opened, hot water flows out of the water purifier. Specifically, the hot water valve control circuit includes a hot water valve control field effect transistor Q10. The drain of the hot water valve control field effect transistor Q10 is electrically connected to the negative electrode of the hot water valve ( Figure 8 the first end of the interface J14 in), and is also electrically connected to the second DC power supply +24V after connecting the protection diode D10. The positive electrode of the hot water valve ( Figure 8 the second end of the interface J14 in) is electrically connected to the second DC power supply +24V. The gate of the hot water valve control field effect transistor Q10 is electrically connected to the first hot water valve control resistor R81 and then connected to Figure 1 the hot water valve control terminal P0.0 of the single-chip microcomputer in. The gate of the hot water valve control field effect transistor Q10 is also electrically connected to the second hot water valve control resistor R87 and then grounded, and is also electrically connected to the resistor R86 and then grounded. The source of the hot water valve control field effect transistor Q10 is grounded. In this embodiment, when it is necessary to control the hot water valve to open, the hot water valve control terminal P0.0 of the single-chip microcomputer drives the hot water valve control field effect transistor Q10 to conduct, the negative electrode of the hot water valve is grounded, the hot water valve is opened, and hot water flows out of the water purifier.

[0039] Furthermore, as Figure 9 shown, the intelligent voice control circuit for the water purifier further includes a disinfection lamp control circuit. The disinfection lamp control circuit is used to control the opening or closing of the disinfection lamp. When the disinfection lamp is opened, the inside of the water purifier can be disinfected by ultraviolet rays. Specifically, the disinfection lamp control circuit includes a disinfection control field effect transistor Q5. The drain of the disinfection control field effect transistor Q5 is electrically connected to the negative electrode of the disinfection lamp, and is also electrically connected to the first DC power supply after connecting the protection diode D5. The positive electrode of the disinfection lamp is electrically connected to the second DC power supply +24V. The gate of the disinfection control field effect transistor Q5 is electrically connected to the first disinfection control resistor R53 and then connected to Figure 1It is electrically connected to the disinfection lamp control terminal P0.7 of the single-chip microcomputer. The gate of the disinfection control field-effect transistor Q5 is also electrically connected to the second disinfection control resistor R60 and then grounded, and is also electrically connected to the resistor R59 and then grounded. The source of the disinfection control field-effect transistor Q5 is grounded. In this embodiment, when it is necessary to control the disinfection lamp to turn on, the disinfection lamp control terminal P0.7 of the single-chip microcomputer drives the disinfection control field-effect transistor Q5 to conduct. The negative electrode of the disinfection lamp is grounded, the disinfection lamp is turned on, and the water purifier performs ultraviolet disinfection and sterilization.

[0040] Further, as Figure 10 shown, the intelligent voice control circuit for the water purifier further includes a water leakage detection circuit. The water leakage detection circuit can detect whether there is water leakage in the water purifier, such as water tank leakage, heater leakage, internal pipeline leakage, etc.; specifically, the water leakage detection circuit includes a water leakage detection sensor. Figure 10 The water leakage detection sensor is electrically connected to the water leakage detection sensor through the interface J4. The power supply terminal of the water leakage detection sensor (the second terminal of the interface J4) is electrically connected to the third DC power supply lsjc_vcc, and the third DC power supply lsjc_vcc is provided by Figure 1 the power supply pin P4.4 of the single-chip microcomputer in Figure 1 The signal terminal of the water leakage detection sensor (the first terminal of the interface J4) is electrically connected to the first water leakage detection resistor R27 and then connected to the water leakage signal sampling terminal P1.4 of the single-chip microcomputer in

[0041] As Figure 11 shown, the intelligent voice control circuit for the water purifier further includes an alarm circuit. The alarm circuit includes a buzzer B1. The positive electrode of the buzzer B1 is electrically connected to the resistor R88 and then connected to the second DC power supply +24V. The negative electrode of the buzzer B1 is electrically connected to the collector of the alarm control triode Q11. A protection diode D5 is also connected in series between the positive and negative electrodes of the buzzer B1. The base of the alarm control triode Q11 is electrically connected to the first alarm voltage-dividing resistor R97 and then connected to Figure 1 the alarm control terminal P4.1 of the single-chip microcomputer in

[0042] In this embodiment, the intelligent voice control circuit for the water purifier further includes a flow rate detection circuit. The flow rate detection circuit is used to detect the water flow rate and measure the water consumption; specifically, as Figure 12As shown, the flow detection circuit includes a flowmeter. Figure 12 The flowmeter is connected to the flowmeter through interface J2. The power supply terminal of the flowmeter (the first terminal of interface J2) is electrically connected to the first DC power supply. The signal terminal of the flowmeter (the second terminal of interface J2) is electrically connected to the first flow detection resistor R23 and the second flow detection resistor R20, and then connected to the +5V of the first DC power supply. The electrical connection point of the first flow detection resistor R23 and the second flow detection resistor R20 is electrically connected to Figure 1 the flow sampling terminal P3.4 of the microcontroller in it. In this embodiment, when the purified water flows out of the water purifier, the flowmeter can input a signal to Figure 1 the flow sampling terminal P3.4 of the microcontroller in it to measure the water output.

[0043] As Figure 13 shown, in this embodiment, the intelligent voice control circuit for the water purifier further includes a power supply circuit. The power supply circuit includes the chip XL1509. The input terminal IN of the chip XL1509 is electrically connected to the protection diode D1 and then connected to the second DC power supply +24V. The output terminal OUT is electrically connected to the inductor L1 and outputs the first DC power supply +5V. It can be seen that the second DC power supply +24V can be converted into the first DC power supply +5V through the power supply circuit.

[0044] Finally, it should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of this application, then the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0045] In addition, if there are descriptions such as "first" and "second" involved in the embodiments of this application, then the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0046] The above is only the implementation manner of this application, and does not limit the patent scope of this application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of this application, or directly or indirectly applied in other related technical fields, is equally included in the patent protection scope of this application.

Claims

1. An intelligent voice control circuit for a water purifier, characterized in that: It includes a single-chip microcomputer, a voice input module, an Internet of Things module and a voice playback module. The voice input module is used to collect user voice signals and is electrically connected to the single-chip microcomputer; the Internet of Things module is electrically connected to the single-chip microcomputer and the voice playback module, and the voice playback module is used to play prompt sounds to the user; Among them, the Internet of Things module includes a chip EC800M, and the chip EC800M is connected to the serial port communication of the single-chip microcomputer. The voice playback module includes an audio amplifier chip NS4150 and a broadcast player. The power supply end of the audio amplifier chip NS4150 is electrically connected to a first DC power supply, and the in-phase input end and the inverting input end of the audio amplifier chip NS4150 are respectively connected to the forward output end and the reverse output end of the chip EC800M, and the positive output end and the inverting output end of the audio amplifier chip NS4150 are electrically connected to the broadcast player.

2. The intelligent voice control circuit for a water purifier according to claim 1, characterized in that: The intelligent voice control circuit for the water purifier also includes a touch button control circuit, which includes a plurality of touch buttons representing different functions and a touch chip SC04B, each of the touch buttons is electrically connected to a touch signal input terminal of the touch chip SC04B, and each touch signal output terminal corresponding to the touch chip SC04B is electrically connected to a touch signal sampling terminal of the single-chip microcomputer.

3. The intelligent voice control circuit for a water purifier according to claim 2, characterized in that: The water purifier comprises a first heater and a second heater cascaded with the first heater, and the intelligent voice control circuit for the water purifier further comprises a first temperature detection circuit, a second temperature detection circuit and a third temperature detection circuit, the first temperature detection circuit is used to detect the temperature of the purified water after being heated by the first heater, the second temperature detection circuit is used to detect the temperature of the purified water after being heated by the second heater, and the third temperature detection circuit is used to detect the ambient temperature in the water purifier; Among them, the first temperature detection circuit includes a first temperature detection sensor, the second temperature detection circuit includes a second temperature detection sensor, and the third temperature detection circuit includes a third temperature detection sensor. The power supply ends of the first temperature detection sensor, the second temperature detection sensor and the third temperature detection sensor are all electrically connected to a first DC power supply, the signal end of the first temperature detection sensor is electrically connected to the first temperature sampling end of the single-chip computer, the signal end of the second temperature detection sensor is electrically connected to the second temperature sampling end of the single-chip computer, and the signal end of the third temperature detection sensor is electrically connected to the third temperature sampling end of the single-chip computer.

4. The intelligent voice control circuit for a water purifier according to claim 3, characterized in that: The intelligent voice control circuit for the water purifier also includes a display circuit, which includes a display driver chip TM1681 and a digital tube, and the display driver chip TM1681 is electrically connected to the single-chip microcomputer and the digital tube.

5. The intelligent voice control circuit for a water purifier according to claim 4, characterized in that: The intelligent voice control circuit for the water purifier also includes a hot water valve control circuit, which is used to control the opening or closing of the hot water valve, including a hot water valve control field effect transistor, the drain of the hot water valve control field effect transistor is electrically connected to the negative electrode of the hot water valve, the positive electrode of the hot water valve is electrically connected to the second DC power supply, the gate of the hot water valve control field effect transistor is electrically connected to the first hot water valve control resistor and then electrically connected to the hot water valve control end of the single-chip computer, the gate of the hot water valve control field effect transistor is also electrically connected to the second hot water valve control resistor and then grounded, and the source of the hot water valve control field effect transistor is grounded.

6. The intelligent voice control circuit for a water purifier according to any one of claims 1 to 5, characterized in that: The intelligent voice control circuit for the water purifier also includes a disinfection lamp control circuit, which is used to control the turning on or off of the disinfection lamp, including a disinfection control field effect transistor, the drain of the disinfection control field effect transistor is electrically connected to the negative electrode of the disinfection lamp, the positive electrode of the disinfection lamp is electrically connected to the second DC power supply, the gate of the disinfection control field effect transistor is electrically connected to the first disinfection control resistor and then electrically connected to the disinfection lamp control end of the single-chip computer, the gate of the disinfection control field effect transistor is also electrically connected to the second disinfection control resistor and then grounded, and the source of the disinfection control field effect transistor is grounded.

7. The intelligent voice control circuit for a water purifier according to claim 6, characterized in that: The intelligent voice control circuit for the water purifier also includes a water leakage detection circuit, which includes a water leakage detection sensor. The power supply end of the water leakage detection sensor is electrically connected to a third DC power supply, the signal end of the water leakage detection sensor is electrically connected to a first water leakage detection resistor and then connected to the water leakage signal sampling end of the single-chip microcomputer, and the signal end of the water leakage detection sensor is also electrically connected to a second water leakage detection resistor and then grounded.

8. The intelligent voice control circuit for a water purifier according to claim 7, characterized in that: The intelligent voice control circuit for the water purifier also includes an alarm circuit, which includes a buzzer. The positive pole of the buzzer is electrically connected to the second DC power supply, and the negative pole of the buzzer is electrically connected to the collector of the alarm control transistor. The base of the alarm control transistor is electrically connected to the first alarm voltage-dividing resistor and then electrically connected to the alarm control end of the single-chip microcomputer. The base of the alarm control transistor is also electrically connected to the second alarm voltage-dividing resistor and then grounded.

9. The intelligent voice control circuit for a water purifier according to claim 8, characterized in that: The intelligent voice control circuit for a water purifier also includes a flow detection circuit, which is used to detect water flow. The flow detection circuit includes a flow meter, a power supply end of the flow meter is electrically connected to a first DC power supply, a signal end of the flow meter is electrically connected to a first flow detection resistor and a second flow detection resistor and then connected to the first DC power supply, and the electrical connection between the first flow detection resistor and the second flow detection resistor is electrically connected to the flow sampling end of the single-chip microcomputer.

10. The intelligent voice control circuit for a water purifier according to claim 9, characterized in that: The intelligent voice control circuit for the water purifier also includes a power supply circuit, which includes a chip XL1509. The input end of the chip XL1509 is electrically connected to the second DC power supply, and the output end outputs the first DC power supply.

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