Electric water heater with voice control induction device

Abstract

The utility model discloses an electric water heater with a sound control induction device, which comprises a single chip microcomputer U1, a sound acquisition circuit and a temperature acquisition circuit, the sound acquisition circuit is connected with an MIC pin of the single chip microcomputer U1, the temperature acquisition circuit is connected with an NTC2 pin of the single chip microcomputer U1, the circuit is simple and reasonable in design, few elements are used, the cost can be saved, and the electric water heater is suitable for popularization and application. Automatic heating is achieved when a person is sensed through sound, the heating temperature can be adjusted according to the environment temperature, energy is saved, and convenience is brought to the life of people.

Description

Technical Field

[0001] This utility model relates to the field of electric water heater technology, specifically to an electric water heater with a sound-activated sensor. Background Technology

[0002] As people's living standards improve, water heaters are becoming increasingly common. However, during bathing, people often need to adjust water temperature and flow, which usually requires operating the water heater's control panel or using a remote control. Operating the control panel is not only inconvenient but also poses a risk of electric shock when hands are wet. Using a remote control is also inconvenient, and it can easily malfunction in humid bathing environments.

[0003] Existing technology allows setting the operating time of electric water heaters, but people's daily bathing time is not fixed, so setting a timer can be inconvenient and also waste energy. Utility Model Content

[0004] To address the problems of existing technologies, this utility model provides an electric water heater that combines voice-activated sensing and intelligent temperature control, eliminating the hassle of manually operating the water heater.

[0005] The technical solution adopted by this utility model is as follows: An electric water heater with a sound-controlled sensing device includes a microcontroller U1, a temperature acquisition circuit, and a sound acquisition circuit. The sound acquisition circuit includes a microphone CN6, a sensing chip U2, resistors R14 and R15, and capacitors C5 and C6. The microphone CN6, capacitor C7, and sensing chip U2 are connected in sequence. One pin of the microphone CN6 is grounded, and the other pin is connected to a coupling circuit. The MIC pin of the sensing chip U2 is connected to the coupling circuit. The VIN pin of the sensing chip U2 is connected to a filter circuit. The GND pin of the sensing chip U2 is grounded together with the filter circuit. The filter circuit is connected to the coupling circuit. The coupling circuit is connected to a 5V power supply. The OUT pin of the sensing chip U2 is connected to resistors R8 and R10. The other end of resistor R10 is connected to the MIC pin of the microcontroller U1.

[0006] The filtering circuit is composed of capacitors C5 and C6 connected in parallel. The coupling circuit is composed of capacitor C7 and resistors R14 and R15. The VIN pin of the sensing chip U2 is connected to capacitor C6, resistor R15 is connected to capacitor C5, and resistor R14 is connected to the 5V power supply.

[0007] The temperature acquisition circuit includes a temperature sensor CN5, a capacitor C4, and resistors R5 and R6. One pin of the temperature sensor CN5 is grounded together with the capacitor C4, and the other pin is connected together with resistors R5 and R6. The other end of resistor R5 is connected to a 5V power supply, and the other end of resistor R6 is connected together with the capacitor C4 and the NTC2 pin of the microcontroller U1.

[0008] The beneficial effects of this utility model are:

[0009] The circuit design of this utility model is simple and reasonable, and it uses fewer components, which can save costs. It can automatically heat water when it senses someone by sound. When the user returns home, the electric water heater will automatically heat the water to the design temperature and maintain the water temperature, so that the water heater can be used at any time without having to go to the panel or find the remote control to turn on the water heater, and also avoid the trouble caused by remote control failure.

[0010] This invention can also monitor the ambient temperature through a temperature sensor, and adjust the heating temperature accordingly. In hot summer, it automatically adjusts the water temperature to a lower temperature, and in cold winter, it automatically adjusts the water temperature to a higher temperature, thus saving energy. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the sound acquisition circuit of this utility model;

[0012] Figure 2 This is the schematic diagram of the microcontroller circuit of this utility model;

[0013] Figure 3 This is a schematic diagram of the temperature acquisition circuit of this utility model. Detailed Implementation

[0014] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0015] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can be mechanical or electrical; they can be direct or indirect through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0016] Reference Figure 1-2 An electric water heater with a sound-controlled sensor includes a microcontroller U1, a temperature acquisition circuit, and a sound acquisition circuit. The sound acquisition circuit includes a microphone CN6, a sensor chip U2, resistors R14 and R15, and capacitors C5 and C6. The microphone CN6, capacitor C7, and sensor chip U2 are connected in sequence. One pin of the microphone CN6 is grounded, and the other pin is connected to a coupling circuit. The MIC pin of the sensor chip U2 is connected to the coupling circuit. The VIN pin of the sensor chip U2 is connected to a filter circuit. The GND pin of the sensor chip U2 and the filter circuit are grounded together. The filter circuit is connected to the coupling circuit, which is connected to a 5V power supply. The OUT pin of the sensor chip U2 is connected to resistors R8 and R10. The other end of resistor R10 is connected to the MIC pin of the microcontroller U1.

[0017] The filter circuit consists of capacitors C5 and C6 connected in parallel to stabilize the power supply voltage and prevent different units from interfering with the sensing chip through the power line.

[0018] The coupling circuit consists of capacitor C7 and resistors R14 and R15. The VIN pin of the sensing chip U2 is connected to capacitor C6, resistor R15 is connected to capacitor C5, and resistor R14 is connected to the 5V power supply.

[0019] Preferably, the sensor chip U2 uses the KU5529, which is relatively inexpensive and can save costs. Alternatively, a more advanced sensor chip with voice recognition can be selected for more intelligent control.

[0020] When a person returns home, the microphone receives the sound signal and converts it into an electrical signal. Then, the sensor chip U2 converts it into a digital signal. The sensor chip outputs the digital signal through the OUT pin, which is then pulled up by the pull-up resistor R8 to increase the output level. Finally, the high-level signal is input into the microcontroller U1 through the MIC pin of the microcontroller U1.

[0021] Preferably, the microphone CN6 is set to a sound control threshold of 15dB. When the microphone detects a sound level ≥15dB, it determines that someone is present.

[0022] If the system is not in automatic heating mode, it will enter automatic heating mode, automatically heat the water to the set temperature, and then enter heat preservation mode to keep the water warm for 30 minutes.

[0023] If the system is in automatic heating mode, it will continue to heat to the set temperature and then enter the heat preservation mode, where it will remain warm for 30 minutes.

[0024] If the water temperature is ≥ the set temperature, the heat preservation mode will be extended and the heat preservation will continue for 30 minutes.

[0025] When the microphone detects a sound level <15dB, if the system is not in automatic heating mode or heat preservation mode, it will not heat; if the system is in automatic heating mode, it will continue to heat; if the system is in heat preservation mode, it will continue to preserve the temperature.

[0026] When the power is restored after the water supply is interrupted, it is still considered that someone is present and the automatic heating mode is activated.

[0027] Reference Figure 2-3 The temperature acquisition circuit includes a temperature sensor CN5, a capacitor C4, and resistors R5 and R6. One pin of the temperature sensor CN5 is grounded together with capacitor C4, and the other pin is connected to resistors R5 and R6. The other end of resistor R5 is connected to a 5V power supply, and the other end of resistor R6 is connected to capacitor C4 and the NTC2 pin of microcontroller U1. The temperature sensor CN5 converts the ambient temperature into an electrical signal, which is then pulled up by the pull-up resistor R5 to increase the output level. Finally, the electrical signal is input to microcontroller U1 through the NTC2 pin.

[0028] Preferably, the threshold of temperature sensor CN5 is set to 25°C. If the temperature sensor detects an ambient temperature ≥25°C, the system enters a low water temperature mode and automatically heats the water to 55°C at the current power. If the temperature sensor detects an ambient temperature <25°C, the system enters a high water temperature mode and automatically heats the water to 75°C at the current power. The set temperature is not adjustable.

[0029] Although embodiments of the present invention have been shown and described, those skilled in the art should understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents. Improvements made without inventive effort should be included within the protection scope of the present invention.

Claims

1. An electric water heater with a sound-activated sensor, comprising a microcontroller U1 and a temperature acquisition circuit, characterized in that: It also includes a sound acquisition circuit, which includes a microphone CN6, a sensor chip U2, resistors R14 and R15, and capacitors C5 and C6. The microphone CN6, capacitor C7, and sensor chip U2 are connected in sequence. One pin of the microphone CN6 is grounded, and the other pin is connected to the coupling circuit. The MIC pin of the sensor chip U2 is connected to the coupling circuit. The VIN pin of the sensor chip U2 is connected to the filter circuit. The GND pin of the sensor chip U2 is grounded together with the filter circuit. The filter circuit is connected to the coupling circuit. The coupling circuit is connected to a 5V power supply. The OUT pin of the sensor chip U2 is connected to resistors R8 and R10. The other end of resistor R10 is connected to the MIC pin of the microcontroller U1.

2. The electric water heater with a sound-activated sensor according to claim 1, characterized in that, The filtering circuit is composed of capacitors C5 and C6 connected in parallel. The coupling circuit is composed of capacitor C7 and resistors R14 and R15. The VIN pin of the sensing chip U2 is connected to capacitor C6, resistor R15 is connected to capacitor C5, and resistor R14 is connected to the 5V power supply.

3. The electric water heater with a sound-activated sensor according to claim 1, characterized in that: The temperature acquisition circuit includes a temperature sensor CN5, a capacitor C4, and resistors R5 and R6. One pin of the temperature sensor CN5 is grounded together with the capacitor C4, and the other pin is connected together with resistors R5 and R6. The other end of resistor R5 is connected to a 5V power supply, and the other end of resistor R6 is connected together with the capacitor C4 and the NTC2 pin of the microcontroller U1.

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