Coffee pot music handle control circuit

Abstract

The utility model discloses a coffee pot music handle control circuit which comprises a power supply module, a main control module, a temperature detection module and an audio playing module. The power module is used for supplying power to the main control module, the temperature detection module and the audio playing module; a preset temperature threshold value and a preset audio frequency are set in the main control module; the temperature detection module is electrically connected with the main control module and used for detecting the temperature of the kettle body; the audio playing module is used for playing preset audio; the main control module can control the audio playing module to play a preset audio when the temperature detection module detects that the temperature of the kettle body reaches a preset temperature threshold value; by means of the circuit, it can be judged that the coffee pot works when it is detected that the temperature reaches the preset temperature threshold value, the preset audio is played, the pleasure of a user in the process of waiting for coffee cooking is improved, and the circuit has very good practicability.

Description

Technical Field

[0001] This utility model relates to the field of coffee makers, and in particular to a coffee maker music handle control circuit. Background Technology

[0002] Current Moka pots on the market have an upper chamber and a lower chamber. The upper chamber receives the coffee liquid that has passed through the lower chamber, while the lower chamber is used to install the funnel and add cold water. The cold water in the lower chamber is heated to form steam. The steam rises and expands, forcing the hot water through the coffee grounds in the funnel to form coffee liquid. The coffee liquid is then injected into the upper chamber through the outlet tube connected to the funnel. At the same time, the upper chamber has a handle for easy handling. However, existing Moka pots have relatively simple functions and are purely mechanical in structure, making the waiting process for the coffee to brew rather boring. Therefore, there is an urgent need for a music handle control circuit for coffee pots to solve the above problems. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a coffee maker music handle control circuit.

[0004] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: a coffee pot music handle control circuit, including a power module, a main control module, a temperature detection module and an audio playback module;

[0005] The power module is used to supply power to the main control module, temperature detection module and audio playback module;

[0006] The main control module is equipped with preset temperature thresholds and preset audio.

[0007] The temperature detection module is electrically connected to the main control module and is used to detect the temperature of the kettle body;

[0008] The audio playback module is used to play preset audio;

[0009] The main control module can control the audio playback module to play preset audio when the temperature detection module detects that the temperature of the kettle body has reached the preset temperature threshold.

[0010] As one of the preferred embodiments of this utility model, the power module includes a USB interface, a battery BAT1, resistors R8-R9, diodes D1, resistors R2-R3, capacitors C3-C4, MOSFETs Q1 and Q2, and a charging protection chip U3.

[0011] The USB interface is connected to the anode of diode D1 and one end of resistor R8. The cathode of diode D1 is connected to one end of capacitor C4, one end of resistor R3 and the positive terminal of battery BAT1 via resistor R2. The other end of resistor R8 is connected to the main control module and one end of resistor R9. The other end of resistor R3 is connected to one end of capacitor C3 and the VCC pin of charging protection chip U3.

[0012] The OD pin of the charging protection chip U3 is connected to the gate of MOSFET Q1. The CS pin of the charging protection chip U3 is connected to the source and GND terminal of MOSFET Q2 via resistor R5. The OC pin of the charging protection chip U3 is connected to the main control module and the gate of MOSFET Q2. The drain of MOSFET Q1 is connected to the drain of MOSFET Q2. The source of MOSFET Q1, the other end of resistor R9, the other end of capacitor C4, the negative terminal of battery BAT1, the other end of capacitor C3, and the GND terminal are connected.

[0013] In one of the preferred embodiments of this utility model, MOS transistors Q1 and Q2 are composed of a chip U4 with a signal of 8205.

[0014] As one of the preferred embodiments of this utility model, the temperature detection module includes a voltage regulator chip U5, a capacitor C1, a capacitor C13, a resistor R1, and a thermistor NTC. The Vin pin of the voltage regulator chip U5 is connected to the power supply module, and the Vout pin of the voltage regulator chip U5 is connected to one end of the capacitor C13 and one end of the resistor R1. The other end of the resistor R1 is connected to the main control module, one end of the capacitor C1, and the first pin of the thermistor NTC. The other end of the capacitor C1, the VSS pin of the voltage regulator chip U5, the other end of the capacitor C13, and the second pin of the thermistor NTC are connected.

[0015] As one of the preferred embodiments of this utility model, the audio playback module includes a voice control chip U2, a speaker SPK, a resistor R4, and capacitors C4-C5. Pin 1 of the speaker SPK is connected to pin PWM1 of the voice control chip U2 via resistor R4, pin 2 of the speaker SPK is connected to pin PWM2 of the voice control chip U2, pin VPP of the voice control chip U2 is connected to the main control module, pin VDD of the voice control chip U2 is connected to the power supply module, one end of capacitor C4, and one end of capacitor C5, and pin GND of the voice control chip U2, the other end of capacitor C4, and the other end of capacitor C5 are connected to the GND terminal.

[0016] The beneficial effects of this utility model are as follows: A coffee maker music handle control circuit includes a power module, a main control module, a temperature detection module, and an audio playback module. The power module supplies power to the main control module, the temperature detection module, and the audio playback module. The main control module has a preset temperature threshold and a preset audio. The temperature detection module is electrically connected to the main control module and is used to detect the temperature of the coffee maker. The audio playback module is used to play the preset audio. The main control module can control the audio playback module to play the preset audio when the temperature detection module detects that the temperature of the coffee maker has reached the preset temperature threshold. Through the above circuit, it is possible to determine that the coffee maker is working when the temperature reaches the preset temperature threshold and play the preset audio, thereby enhancing the user's enjoyment while waiting for the coffee to brew. It has excellent practicality. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of a coffee maker music handle control circuit.

[0019] Figure 2 The circuit principle of the power module;

[0020] Figure 3 The circuit principle of the main control module;

[0021] Figure 4 The circuit principle of the temperature detection module;

[0022] Figure 5 This describes the circuit principle of the audio playback module. Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0024] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0025] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0027] Reference Figures 1 to 5 A coffee maker music handle control circuit includes a power module 10, a main control module 20, a temperature detection module 30, and an audio playback module 40.

[0028] Power module 10 provides power to main control module 20, temperature detection module 30 and audio playback module 40;

[0029] The main control module 20 is equipped with preset temperature thresholds and preset audio.

[0030] The temperature detection module 30 is electrically connected to the main control module 20 and is used to detect the temperature of the kettle body;

[0031] The audio playback module 40 is used to play preset audio;

[0032] The main control module 20 can control the audio playback module 40 to play preset audio when the temperature detection module 30 detects that the temperature of the kettle body has reached the preset temperature threshold.

[0033] In this invention, the control circuit is installed on the handle of the coffee maker, and the temperature detection module 30 is positioned close to the body of the coffee maker to detect its temperature. By presetting a temperature threshold and a preset audio value within the main control module 20, and then based on the actual temperature returned by the temperature detection module 30, the system determines whether the coffee maker is currently in operation (brewing coffee). For example, the preset temperature threshold is preferably 45℃, and the preset audio value is "chord music." After the handle is powered on, it enters standby mode and detects the temperature of the coffee maker every 16 seconds. When the temperature detection module 30 detects a temperature higher than 45℃, it determines that the coffee maker is currently in operation. In hot working condition, the sampling time of the temperature detection module 30 is modified to once every 2 seconds; in some possible embodiments, when the detected temperature is higher than 45°C, the detection continues until the temperature detection module 30 detects a temperature higher than 55 or 70°C, at which point a 65-second "chord music" is started; when the temperature detection module 30 detects a temperature higher than 55 or 70°C and the 65-second "chord music" has finished playing, the step of starting to play the 65-second "chord music" when the temperature detection module 30 detects a temperature higher than 55 or 70°C can only be re-entered after the temperature detection module 30 detects a temperature lower than 45°C.

[0034] In some embodiments, the power module 10 includes a USB interface and a battery BAT. 1. Resistors R8-R9, diode D1, resistors R2-R3, capacitors C3-C4, MOSFETs Q1 and Q2, and charging protection chip U3; The USB interface is connected to the anode of diode D1 and one end of resistor R8. The cathode of diode D1 is connected to one end of capacitor C4, one end of resistor R3, and the positive terminal of battery BAT1 via resistor R2. The other end of resistor R8 is connected to the main control module 20 and one end of resistor R9. The other end of resistor R3 is connected to one end of capacitor C3 and the VCC pin of charging protection chip U3. The OD pin of charging protection chip U3 is connected to the gate of MOSFET Q1. The CS pin of charging protection chip U3 is connected to the source and GND terminal of MOSFET Q2 via resistor R5. The OC pin of charging protection chip U3 is connected to the main control module 20 and the gate of MOSFET Q2. The drain of MOSFET Q1 is connected to the drain of MOSFET Q2. The source of MOSFET Q1, the other end of resistor R9, the other end of capacitor C4, and battery BAT1 are also connected. The negative terminal of capacitor C1 and the other end of capacitor C3 are connected to the GND terminal.

[0035] Specifically, when in heating mode, the voltage of battery BAT 1 is sampled every 2 seconds (AD BAT end). When the voltage of battery BAT 1 is lower than 3.3V, the audio playback module 40 will play a low voltage "beep" sound once, with an interval of 3 seconds, for a total of 20 times (equivalent to 60 seconds) before stopping. Low voltage detection is not performed when not in heating mode. When external power supply charging (USB interface) is detected, the voltage of battery BAT 1 is sampled every 2 seconds. When the voltage of battery BAT 1 is higher than 4.2V, the audio playback module 40 will play a full charge "beep, beep" sound twice, with an interval of 3 seconds, for a total of 20 times (equivalent to 60 seconds), before disconnecting the external power supply and stopping low voltage detection. Furthermore, when the USB interface is connected to an external power supply for charging, the audio playback module 40 will play a "beep" sound to indicate that the charging connection is successful.

[0036] Reference Figure 2 In some embodiments, MOSFETs Q1 and Q2 are composed of a chip U4 with a signal of 8205.

[0037] Reference Figure 4 In some embodiments, the temperature detection module 30 includes a voltage regulator chip U5, capacitors C1 and C13, a resistor R1, and a thermistor NTC. The Vin pin of the voltage regulator chip U5 is connected to the power supply module 10, and the Vout pin of the voltage regulator chip U5 is connected to one end of capacitor C13 and one end of resistor R1. The other end of resistor R1 is connected to the main control module 20, one end of capacitor C1, and the first pin of the thermistor NTC. The other end of capacitor C1, the VSS pin of the voltage regulator chip U5, the other end of capacitor C13, and the second pin of the thermistor NTC are connected.

[0038] Reference Figure 5 In some embodiments, the audio playback module 40 includes a voice control chip U2, a speaker SPK, a resistor R4, and capacitors C4-C5. Pin 1 of the speaker SPK is connected to pin PWM1 of the voice control chip U2 via resistor R4, pin 2 of the speaker SPK is connected to pin PWM2 of the voice control chip U2, pin VPP of the voice control chip U2 is connected to the main control module 20, pin VDD of the voice control chip U2 is connected to the power module 10, one end of capacitor C4, and one end of capacitor C5, and pin GND of the voice control chip U2, the other end of capacitor C4, and the other end of capacitor C5 are connected to the GND terminal.

[0039] The advantages of this invention are: the circuit can determine that the coffee maker is working when the temperature reaches the preset temperature threshold and play a preset audio, which enhances the user's enjoyment while waiting for the coffee to be brewed and has excellent practicality.

[0040] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A coffee maker music handle control circuit, characterized in that: It includes a power module (10), a main control module (20), a temperature detection module (30), and an audio playback module (40). The power module (10) is used to supply power to the main control module (20), the temperature detection module (30) and the audio playback module (40); The main control module (20) is equipped with a preset temperature threshold and a preset audio. The temperature detection module (30) is electrically connected to the main control module (20) and is used to detect the temperature of the kettle body; The audio playback module (40) is used to play the preset audio; The main control module (20) can control the audio playback module (40) to play the preset audio when the temperature detection module (30) detects that the temperature of the kettle body has reached the preset temperature threshold. The audio playback module (40) includes a voice control chip U2, a speaker SPK, a resistor R4, and capacitors C4-C5. The first pin of the speaker SPK is connected to the PWM1 pin of the voice control chip U2 via the resistor R4. The second pin of the speaker SPK is connected to the PWM2 pin of the voice control chip U2. The VPP pin of the voice control chip U2 is connected to the main control module (20). The VDD pin of the voice control chip U2 is connected to the power supply module (10), one end of capacitor C4, and one end of capacitor C5. The GND pin of the voice control chip U2, the other end of capacitor C4, and the other end of capacitor C5 are connected to the GND terminal.

2. The coffee pot music handle control circuit according to claim 1, characterized in that: The power module (10) includes a USB interface, a battery BAT1, resistors R8-R9, diodes D1, resistors R2-R3, capacitors C3-C4, MOSFETs Q1 and Q2, and a charging protection chip U3. The USB interface is connected to the anode of diode D1 and one end of resistor R8. The cathode of diode D1 is connected to one end of capacitor C4, one end of resistor R3 and the positive terminal of battery BAT1 via resistor R2. The other end of resistor R8 is connected to the main control module (20) and one end of resistor R9. The other end of resistor R3 is connected to one end of capacitor C3 and the VCC pin of charging protection chip U3. The OD pin of the charging protection chip U3 is connected to the gate of the MOS transistor Q1. The CS pin of the charging protection chip U3 is connected to the source and GND terminal of the MOS transistor Q2 via resistor R5. The OC pin of the charging protection chip U3 is connected to the main control module (20) and the gate of the MOS transistor Q2. The drain of the MOS transistor Q1 is connected to the drain of the MOS transistor Q2. The source of the MOS transistor Q1, the other end of the resistor R9, the other end of the capacitor C4, the negative terminal of the battery BAT1, the other end of the capacitor C3 and the GND terminal are connected.

3. The coffee pot music handle control circuit according to claim 2, characterized in that: The MOSFETs Q1 and Q2 are composed of a chip U4 with a signal of 8205.

4. The coffee pot music handle control circuit according to claim 1, characterized in that: The temperature detection module (30) includes a voltage regulator chip U5, a capacitor C1, a capacitor C13, a resistor R1, and a thermistor NTC. The Vin pin of the voltage regulator chip U5 is connected to the power supply module (10). The Vout pin of the voltage regulator chip U5 is connected to one end of the capacitor C13 and one end of the resistor R1. The other end of the resistor R1 is connected to the main control module (20), one end of the capacitor C1, and the first pin of the thermistor NTC. The other end of the capacitor C1, the VSS pin of the voltage regulator chip U5, the other end of the capacitor C13, and the second pin of the thermistor NTC are connected.

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