Voice faucet control system with pir and faucet

Abstract

This utility model discloses a voice-activated faucet control system with PIR sensor, comprising: a main control chip, a voice module, a PIR sensor, a power conversion module, an electric component module, and a microphone. The power conversion module is electrically connected to the main control chip, the PIR sensor, the electric component module, and the voice module. The power conversion module converts the voltage of the external power supply into the system operating voltage. A switching circuit is connected in series in the power supply circuit between the power conversion module and the voice module, and the enable terminal of the switching circuit is connected to the main control chip. When powered on, the voice module receives voice commands recorded by the microphone and transmits the processed command data to the main control chip. The PIR sensor is used to monitor human infrared signals within the target area. The main control chip controls the switching circuit based on the output signal of the PIR sensor. This application effectively reduces standby power consumption and dependence on power supply conditions, and improves installation flexibility.

Description

Technical Field

[0001] This utility model relates to the field of bathroom equipment, specifically to a voice faucet control system and faucet with PIR. Background Technology

[0002] As people's living standards improve, consumers are increasingly favoring bathroom fixtures with intelligent voice control. However, existing smart faucets with voice functions have many issues that need to be optimized in practical applications. The main problem is that these products rely on a voice module to receive and respond to commands. To ensure that the user's voice wake-up words can be received at any time, the voice module usually needs to be in standby mode for a long time. However, the standby power consumption of the voice module is relatively high, which directly leads to the demanding power supply requirements of bathroom products. If battery power is used, the battery life is short and frequent replacement or charging is required. However, if an external power source is used, the installation scenarios are limited, and it is difficult to popularize them in areas lacking convenient power interfaces.

[0003] Meanwhile, because the voice module has a wide sensing range, noise in the environment similar to the voice wake-up words or commands can easily trigger the faucet to work, which not only wastes water and electricity but also affects the user experience. The root cause of this false triggering problem is that existing voice faucets cannot accurately define the effective use area and have difficulty distinguishing between valid user commands and environmental interference signals, resulting in reduced reliability in complex acoustic environments.

[0004] A pyroelectric infrared (PIR) sensor is a device that can sense infrared radiation of a specific wavelength emitted by the human body. It detects human activity within a certain area by capturing human radiation through infrared pyroelectric elements. This type of sensor has been applied to products such as energy-saving cameras and energy-saving lamps due to its low standby power consumption and accurate sensing capability of human activity. However, in the field of voice-activated faucets, there is currently no mature technical solution to effectively combine PIR sensors with voice control functions to solve the power consumption and false triggering problems of existing products.

[0005] Therefore, it is necessary to propose a voice faucet control system and matching faucet that integrates PIR. The voice module's working status is controlled by the accurate sensing of human activity through the PIR sensor, which reduces standby power consumption and false triggers, while improving the product's applicability and user experience. Utility Model Content

[0006] This utility model provides a voice-controlled faucet system and faucet with PIR, which can monitor the activities of external personnel through a PIR sensor and activate the voice module only when personnel approach, achieving energy saving and high reliability.

[0007] In order to achieve these objectives and other advantages of the present invention, in a first aspect, the present invention provides a voice faucet control system with PIR, comprising: a main control chip, a voice module, a PIR sensor, a power conversion module, an electric device module, and a microphone;

[0008] The power conversion module is electrically connected to the main control chip, PIR sensor, electric device module, and voice module. The power conversion module converts the voltage of the external power supply into the system operating voltage. A switching circuit is connected in series in the power supply circuit between the power conversion module and the voice module. The enable terminal of the switching circuit is connected to the main control chip.

[0009] The microphone is connected to the voice module. When powered on, the voice module receives the voice commands recorded by the microphone and transmits the processed command data to the main control chip.

[0010] The PIR sensor is used to monitor human infrared signals within the target area. The signal output terminal of the PIR sensor is connected to the main control chip, and the main control chip controls the switching circuit to open or close based on the output signal of the PIR sensor.

[0011] Preferably, the switching circuit is connected in series in the grounding loop of the voice module. The switching circuit includes a MOSFET Q3, wherein the gate of the MOSFET Q3 is connected to the main control chip, the source is grounded, and the drain is electrically connected to the ground terminal of the voice module.

[0012] Preferably, the MOSFET Q3 is an N-channel MOSFET of model AO3400.

[0013] Preferably, the PIR sensor includes an infrared pyroelectric human body sensor and a Fresnel lens, wherein the Fresnel lens is positioned in front of the light-sensing path of the infrared pyroelectric human body sensor to focus 8~14 μm The infrared pyroelectric human body sensor converts infrared radiation into electrical signals within a wavelength range.

[0014] Preferably, it also includes a speaker connected to the voice module.

[0015] Preferably, the voice module and the main control chip are connected via a UART serial communication interface, wherein the transmitting end of the voice module is connected to the receiving end of the main control chip, and the receiving end of the voice module is connected to the transmitting end of the main control chip.

[0016] Preferably, an ADC circuit is connected between the main control chip and the external power supply for monitoring the voltage of the external power supply.

[0017] Secondly, the present invention provides a faucet containing the above-mentioned voice faucet control system with PIR, including a faucet body on which a microphone and a PIR sensor are installed.

[0018] This utility model has at least the following beneficial effects:

[0019] First, this utility model can effectively reduce standby power consumption and reduce dependence on power supply conditions. Through the low power consumption characteristics of the PIR sensor, the voice module is powered on only when a human body is detected entering the effective area, while the system is in low power consumption mode at other times, which greatly reduces the overall standby power consumption, allowing the product to be powered by battery without relying on an external power source, thus improving the flexibility of installation.

[0020] Secondly, this utility model uses a PIR sensor to limit the effective range of voice control to a specific area of ​​human activity. The voice module only enters a responsive state when there are people in that area, thereby significantly reducing the probability of false triggering due to environmental noise and allowing the product to work stably in complex environments.

[0021] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a system in one technical solution of this utility model;

[0023] Figure 2 This is a schematic diagram of the main control chip circuit in one technical solution of this utility model;

[0024] Figure 3 This is a circuit diagram of the voice module in one technical solution of this utility model;

[0025] Figure 4 This is a schematic diagram of the power conversion module circuit in one technical solution of this utility model;

[0026] Figure 5 This is a schematic diagram of the electric device module circuit in one technical solution of this utility model;

[0027] Figure 6 This is a schematic diagram of a PIR sensor circuit in one technical solution of this utility model;

[0028] Figure 7 This is a schematic diagram of a level conversion circuit in one technical solution of this utility model;

[0029] Figure 8 This is a schematic diagram of a faucet structure according to the present invention;

[0030] Figure 9 This is a flowchart illustrating the process of this utility model. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0032] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0033] It should be noted that, unless otherwise specified, the experimental methods described in the following embodiments are conventional methods, and the components described are commercially available unless otherwise specified. In the description of this utility model, it should be noted that, unless otherwise explicitly stated and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to fixed connection or setting, detachable connection or setting, or integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] like Figures 1-7As shown, this utility model provides a voice-activated faucet control system with PIR sensor, including: a main control chip 100, a voice module 200, a PIR sensor 400, a power conversion module 500, an electric actuator module 300, and a microphone 600; the power conversion module 500 is electrically connected to the main control chip 100, the PIR sensor 400, the electric actuator module 300, and the voice module 200, and converts the voltage of the external power supply into the system operating voltage; a PIR sensor 400 is connected in series in the power supply circuit between the power conversion module 500 and the voice module 200. A switching circuit is included, with its enable terminal connected to the main control chip 100. A microphone 600 is connected to the voice module 200, which receives voice commands recorded by the microphone 600 when powered on and transmits the processed command data to the main control chip 100. A PIR sensor 400 is used to monitor human infrared signals within a target area. The signal output terminal of the PIR sensor 400 is connected to the main control chip 100, and the main control chip 100 controls the switching circuit's on / off state based on the output signal of the PIR sensor 400.

[0035] In one embodiment of this application, such as Figure 3 As shown, the power conversion module 500 converts the 6V voltage of the external power supply into a stable 5V system operating voltage. The 6V DC voltage of the external power supply is rectified by diodes D1 and D2 and filtered and regulated by capacitors C2 and C3, and finally outputs a stable 5V system operating voltage. One pin of the transient voltage suppression diode TVS1 is connected to the positive terminal of the external power supply, and the other pin is connected to ground.

[0036] 100 main control chip Figure 2 As shown, the main control chip 100 uses a 16-pin package, and its specific interface definition is as follows: pin 1 connects to the 5V power output from the power conversion module 500; pin 3 is grounded; pin 7 receives the digital signal from the PIR sensor 400 through resistor R3; pin 12 serves as the UART receiver connected to the transmitter of the voice module 2; pin 13 serves as the UART transmitter connected to the receiver of the voice module 200; pins 15 and 16 are connected to the motor module 300; and the main control chip 100 communicates with the external power supply via level conversion. The circuit connection is as follows: the level conversion circuit includes MOSFETs Q1 and Q2. Pins 5 and 6 of the main control chip 100 are connected to the sources of MOSFETs Q2 and Q1, respectively. The drains of MOSFETs Q1 and Q2 are connected to the signal transmitting and receiving terminals of the power supply equipment in the external power supply, respectively. Both MOSFETs Q1 and Q2 are 2SK3019 N-channel MOSFETs. Pin 14 of the main control chip 100 is connected to the switching circuit, and the switching circuit is controlled by outputting high and low levels.

[0037] Voice module 200 Figure 3 As shown, its specific interface definition is as follows: pin 17 of the voice module 200 is connected to the 5V power output of the power conversion module 500; pins 10 and 11 are connected to the microphone 600 for collecting user voice commands; pin 16 of the voice module 200 is connected to pin 12 of the main control chip 100 for transmitting the recognized command data; pin 15 of the voice module 200 is connected to pin 13 of the main control chip 100 for receiving commands from the main control chip 100; pin 18 of the voice module 200 is grounded; a switching circuit is connected in series between pin 18 of the voice module 200 and system ground; the switching circuit includes a MOSFET Q3, wherein the gate of the MOSFET Q3 is connected to the main control chip 100, the source of the MOSFET Q3 is grounded, and the drain is electrically connected to pin 18 of the voice module 200.

[0038] Electric component module 300 Figure 5 As shown, the device includes a motor driver chip of model T1016H. Pin 1 of the motor driver chip is connected to pin 15 of the main control chip 100 through resistor R9. Pin 3 of the motor driver chip is connected to pin 16 of the main control chip 100 through resistor R8. Pins 5 and 2 of the motor driver chip are connected to the 5V power output from the power conversion module 500 and the system ground, respectively. Pins 4 and 6 of the electric device module 300 are used to connect electric devices such as motors in solenoid valves.

[0039] In this embodiment, the power conversion module 500 rectifies the external 6V DC input through diodes D1 and D2, filters it through capacitors C2 and C3, and provides overvoltage protection through the transient suppression diode TVS1, before outputting a stable 5V system operating voltage. At this time, the main control chip 100, PIR sensor 400, and electric device module 300 maintain a powered state, while the voice module 200 is powered off to reduce power consumption. The entire system is in a low-power mode. When the user enters the monitoring area of ​​the PIR sensor 400, the PIR sensor 400 monitors... The system receives infrared signals from the human body and outputs digital signals to the main control chip 100. The main control chip 100 then outputs a high level to the MOSFET Q3, turning on the +5V power supply to the voice module 200. The voice module 200 is then activated and enters standby monitoring mode. After the user speaks the voice wake-up phrase, the voice module 200 collects audio through the microphone 600. When the user continues to speak commands, the voice module 200 sends the recognized and processed command data to the main control chip 100. The main control chip 100 then analyzes the data and controls the electric device module 300 to achieve precise control of the corresponding electric device.

[0040] In another technical solution, the switching circuit is connected in series in the grounding loop of the voice module. The switching circuit includes a MOS transistor Q3, wherein the gate of the MOS transistor Q3 is connected to the main control chip, the source is grounded, and the drain is electrically connected to the grounding terminal of the voice module.

[0041] In another technical solution, the MOSFET Q3 is an N-channel MOSFET of model AO3400.

[0042] In another technical solution, the PIR sensor 400 includes an infrared pyroelectric human body sensor and a Fresnel lens. The Fresnel lens is positioned in front of the light-sensing path of the infrared pyroelectric human body sensor to focus 8~14 μm The infrared pyroelectric human body sensor converts infrared radiation into electrical signals within a wavelength range. The core of the infrared pyroelectric human body sensor uses a pyroelectric material that is sensitive to mid- and far-infrared radiation. When the focused infrared radiation causes a change in surface temperature, the spontaneous polarization intensity of the material changes, and a weak charge signal is output. This analog signal is processed by the built-in high-gain operational amplifier and comparator circuit and then converted into a digital level signal and output to the main control chip 100.

[0043] In another technical solution, a speaker 700 is also included, which is connected to the voice module 200. The speaker 700 is used to implement voice feedback function. For example, when the user says the voice wake-up word, the voice module 200 receives the signal and will emit a prompt tone through the speaker 700 to inform the user that it has entered the state of receiving commands. When the user issues a work command, if the command is successfully recognized and executed, the speaker 700 will also emit a corresponding sound feedback to let the user know that the operation has been completed.

[0044] In another technical solution, the voice module 200 and the main control chip 100 are connected via a UART serial communication interface, wherein the transmitting end of the voice module 200 is connected to the receiving end of the main control chip 100, and the receiving end of the voice module 200 is connected to the transmitting end of the main control chip 100. The signal definition and level standard follow the industrial general UART protocol to ensure communication compatibility and anti-interference capability.

[0045] In another technical solution, an ADC circuit is connected between the main control chip 100 and the external power supply to monitor the voltage of the external power supply. The ADC circuit includes resistors R12 and R13. The voltage of the external power supply first passes through resistor R12, and then through resistor R13 and the system ground to form a voltage divider network to reduce the input voltage to a range suitable for the ADC circuit input. A capacitor C6 is connected between resistor R13 and system ground to filter out high-frequency noise. Pin 9 of the main control chip 100 samples the voltage signal after voltage division and filtering. When the voltage of the external power supply is lower than the control threshold, such as 4.5V, the main control chip 100 controls the electric device module 300 to cut off the water supply, so as to avoid system instability or damage due to insufficient voltage.

[0046] A faucet, comprising the aforementioned voice faucet control system with PIR, includes a faucet body 800 on which a microphone 600 and a PIR sensor 400 are mounted, such as... Figure 6 As shown, in this technical solution, the faucet body 800 is fixed on the sink, and the PIR sensor 400 is set on the top of the faucet body 800, with the sensing window of the PIR sensor 400 facing the front of the faucet body 800.

[0047] The number of devices and processing scale described herein are for the purpose of simplifying the description of this utility model. Applications, modifications, and variations of this utility model will be readily apparent to those skilled in the art.

[0048] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A voice-activated faucet control system with PIR, characterized in that, include: Main control chip, voice module, PIR sensor, power conversion module, electric component module, microphone; The power conversion module is electrically connected to the main control chip, PIR sensor, electric device module, and voice module. The power conversion module converts the voltage of the external power supply into the system operating voltage. A switching circuit is connected in series in the power supply circuit between the power conversion module and the voice module. The enable terminal of the switching circuit is connected to the main control chip. The microphone is connected to the voice module. When powered on, the voice module receives the voice commands recorded by the microphone and transmits the processed command data to the main control chip. The PIR sensor is used to monitor human infrared signals within the target area. The signal output terminal of the PIR sensor is connected to the main control chip, and the main control chip controls the switching circuit to open or close based on the output signal of the PIR sensor.

2. The voice faucet control system with PIR as described in claim 1, characterized in that, The switching circuit is connected in series in the grounding loop of the voice module. The switching circuit includes a MOS transistor Q3, wherein the gate of the MOS transistor Q3 is connected to the main control chip, the source is grounded, and the drain is electrically connected to the ground terminal of the voice module.

3. The voice faucet control system with PIR as described in claim 2, characterized in that, The MOSFET Q3 is an N-channel MOSFET of model AO3400.

4. The voice faucet control system with PIR as described in claim 1, characterized in that, The PIR sensor includes an infrared pyroelectric human body sensor and a Fresnel lens. The Fresnel lens is positioned in front of the light-sensing path of the infrared pyroelectric human body sensor to focus light at 8-14 ppm. μm The infrared pyroelectric human body sensor converts infrared radiation into electrical signals within a wavelength range.

5. The voice faucet control system with PIR as described in claim 1, characterized in that, It also includes a speaker, which is connected to the voice module.

6. The voice-activated faucet control system with PIR as described in claim 1, characterized in that, The voice module and the main control chip are connected via a UART serial communication interface, wherein the transmitting end of the voice module is connected to the receiving end of the main control chip, and the receiving end of the voice module is connected to the transmitting end of the main control chip.

7. The voice faucet control system with PIR as described in claim 1, characterized in that, An ADC circuit is connected between the main control chip and the external power supply to monitor the voltage of the external power supply.

8. A faucet comprising a voice-controlled faucet system with PIR as described in any one of claims 1 to 7, characterized in that, This includes the faucet body, which is equipped with a microphone and a PIR sensor.

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