Hair curler standby cooling system

Abstract

The invention discloses a standby cooling system for a hair curler. The standby cooling system comprises a power supply circuit, an MCU main control circuit, a vibration sensor detection circuit, a heating control circuit, a heating body and a temperature detection circuit, the power supply circuit is electrically connected with the MCU master control circuit and the heating control circuit. The vibration sensor detection circuit is electrically connected with the MCU main control circuit, and the MCU main control circuit judges whether the hair curler is in a static state or a use state according to a signal sent by the vibration sensor detection circuit; the heating control circuit is connected to the MCU main control circuit, the heating body is connected to the heating control circuit, and the temperature detection circuit is electrically connected between the MCU main control circuit and the heating body; the invention has the beneficial effects that the temperature of the heating body can be reduced after the product stands still for a certain time, the electric energy can be saved by low-temperature standby, the risk of high-temperature fire is avoided, and the normal use is not influenced.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit control, and more particularly to a standby cooling system for a hair curler. Background Art

[0002] Hair is a human ornament. Shiny and soft hair is a symbol of health and an embellishment of beauty. my country's beauty and hairdressing industry has entrepreneurial characteristics of self-selection and self-development in terms of investment and employment. Since beauty and hairdressing is a one-to-one or even many-to-one service mode, it has ductility in attracting employees; the beauty and hairdressing industry has a low entry threshold, low entrepreneurial costs, and stable income. It has good development prospects and strong entrepreneurial development advantages.

[0003] A curling iron is a handheld electronic product used to curl hair. Its main components are a handle and a heating roller. The design of the curling iron uses a circuit panel to control the temperature. The heating roller is made of a tourmaline ceramic panel, which can evenly disperse heat, circulate heating, and improve the protein structure of the hair to create curvature.

[0004] If the curling irons on the market are turned on and left unused, they will continue to heat at a set temperature, which will waste electricity. In addition, continuous high-temperature heating will cause the surface temperature to rise, posing a risk of fire. Summary of the invention

[0005] In order to overcome the shortcomings of the prior art, the present invention provides a curling iron standby cooling system, which can reduce the temperature of the heating element after the product has been stationary for a certain period of time. Low-temperature standby can save electricity, and there is no risk of high-temperature fire, and normal use is not affected.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a curling iron standby cooling system, the improvement of which is that it includes a power supply circuit, an MCU main control circuit, a vibration sensor detection circuit, a heating control circuit, a heating element and a temperature detection circuit; The power supply circuit is electrically connected to the MCU main control circuit and the heating control circuit respectively, and is used to provide electrical energy during their operation; The vibration sensor detection circuit is electrically connected to the MCU main control circuit, and the MCU main control circuit determines whether the curling iron is in a static state or in use state through the signal sent by the vibration sensor detection circuit; The heating control circuit is connected to the MCU main control circuit, and the heating element is connected to the heating control circuit. The MCU main control circuit determines the state of the curling iron to control the heating of the heating element. The temperature detection circuit is electrically connected between the MCU main control circuit and the heating element. The temperature detection circuit detects the temperature of the heating element and sends the detection result to the MCU main control circuit.

[0007] In the above circuit structure, when the MCU main control circuit judges the state of the curling iron, when the static state exceeds the set time, the MCU main control circuit controls the heating element to lower the temperature, so that the curling iron enters the low-temperature standby state; When it is determined that the curling iron is in use, the MCU main control circuit controls the heating of the heating element through the heating control circuit, so that the heating element is quickly heated to the set temperature.

[0008] In the above circuit structure, the MCU main control circuit includes a main control chip IC1, and the model of the main control chip IC1 is HC89F0541 or STC8H1K16.

[0009] In the above circuit structure, the power supply circuit includes an AC high voltage input circuit, which is connected to the mains and is used to supply power to the heating control circuit.

[0010] In the above circuit structure, the power supply circuit also includes a voltage stabilizing circuit, the input end of which is connected to the AC high voltage input circuit, and the output end is connected to the MCU main control circuit, for converting AC power into DC power and supplying power to the MCU main control circuit.

[0011] In the above circuit structure, the voltage stabilizing circuit converts the AC power into 5V DC power.

[0012] In the above circuit structure, the vibration sensor detection circuit includes a vibration sensor SW1. When the curling iron is in a stationary state, the vibration sensor SW1 outputs a fixed level to the MCU main control circuit. When the curling iron is in use, the vibration sensor SW1 outputs a jump level to the MCU main control circuit.

[0013] In the above circuit structure, the curling iron standby cooling system further includes a key detection circuit, and the key detection circuit is electrically connected to the MCU main control circuit.

[0014] In the above circuit structure, the button detection circuit includes a power button, a temperature plus button and a temperature minus button.

[0015] In the above circuit structure, the curling iron standby cooling system also includes a temperature display circuit, and the temperature display circuit is electrically connected to the MCU main control circuit.

[0016] The beneficial effects of the present invention are as follows: by adding a vibration sensor, the temperature of the heating element can be lowered when the product is stationary for more than a certain period of time; low-temperature standby can save electric energy, and there is no risk of high-temperature fire, and normal use is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a schematic diagram of the framework structure of a curling iron standby cooling system.

[0018] Figure 2 This is a specific embodiment diagram of the MCU main control circuit in the present invention.

[0019] Figure 3 It is a specific embodiment diagram of the voltage stabilizing circuit in the present invention.

[0020] Figure 4 It is a specific embodiment diagram of the vibration sensor detection circuit in the present invention.

[0021] Figure 5 This is a specific embodiment diagram of the heating control circuit in the present invention.

[0022] Figure 6 It is a specific embodiment diagram of the temperature detection circuit in the present invention.

[0023] Figure 7 It is a specific embodiment diagram of the temperature display circuit in the present invention.

[0024] Figure 8 It is a specific embodiment diagram of the key detection circuit in the present invention. Implementation

[0025] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0026] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other.

[0027] Reference Figure 1As shown, the present invention provides a curling iron standby cooling system, which comprises a power supply circuit 10, an MCU main control circuit 20, a vibration sensor detection circuit 30, a heating control circuit 40, a heating element 50 and a temperature detection circuit 60; the power supply circuit 10 is electrically connected to the MCU main control circuit 20 and the heating control circuit 40 respectively, and is used to provide electric energy when the curling iron is in operation; the vibration sensor detection circuit 30 is electrically connected to the MCU main control circuit 20, and the MCU main control circuit 20 determines whether the curling iron is in a static state or in a use state through a signal sent by the vibration sensor detection circuit 30; in this embodiment, when the MCU main control circuit 20 determines the state of the curling iron, when the static state exceeds a set time, the MCU main control circuit 20 controls the heating element 50 to lower the temperature, so that the curling iron enters a low-temperature standby state; when it is determined that the curling iron is in a use state, the MCU main control circuit 20 controls the heating element 50 to heat through the heating control circuit 40, so that the heating element 50 quickly heats up to a set temperature. The heating control circuit 40 is connected to the MCU main control circuit 20, and the heating element 50 is connected to the heating control circuit 40. The MCU main control circuit 20 determines the state of the curling iron to control the heating of the heating element 50. The temperature detection circuit 60 is electrically connected between the MCU main control circuit 20 and the heating element 50. The temperature detection circuit 60 detects the temperature of the heating element 50 and sends the detection result to the MCU main control circuit 20.

[0028] In this embodiment, the power supply circuit 10 includes an AC high voltage input circuit 101, which is connected to the AC power supply and is used to supply power to the heating control circuit 40. The power supply circuit 10 also includes a voltage stabilizing circuit 102, the input end of which is connected to the AC high voltage input circuit 101, and the output end is connected to the MCU main control circuit 20, which is used to convert the AC power supply into direct current and supply power to the MCU main control circuit 20; and the voltage stabilizing circuit 102 converts the AC power supply into 5V direct current. In addition, the curling iron standby cooling system also includes a key detection circuit 80 and a temperature display circuit 70, the key detection circuit 80 is electrically connected to the MCU main control circuit 20; the key detection circuit 80 includes a power on / off key, a temperature plus key, and a temperature minus key; the temperature display circuit 70 is electrically connected to the MCU main control circuit 20.

[0029] Combination Figure 1 , Figure 2 As shown, Figure 2It is a specific embodiment of the MCU main control circuit 20, and the MCU main control circuit 20 includes a main control chip IC1, and the model of the main control chip IC1 is HC89F0541; in another specific embodiment, the model of the main control chip IC1 is STC8H1K16. Logical judgment and operation are realized by the main control chip IC1. In this embodiment, the main control chip IC1 controls the operation of each circuit through software, and its operation process is as follows: after the main control chip IC1 detects the key power-on signal, it controls the temperature display circuit 70 to display the set temperature and controls the heating element 50 to heat. The main control chip IC1 detects the temperature of the heating element 50 through the temperature detection circuit 60 and displays it on the display screen. After that, the main control chip IC1 reads the signal sent by the vibration sensor detection circuit 30 to determine whether the product is in use or in a stationary state. The product lowers the standby temperature in a stationary state and restores the set temperature in a use state. For the convenience of description, the main control chip IC1 is directly referred to as MCU in the following text.

[0030] Reference Figure 3 As shown, it is a specific embodiment of the voltage stabilizing circuit 102, and its working principle is as follows: the power line is connected to the mains to the circuit board through the current fuse F1, the thermal fuse F2 (installed at the heating element 50), the varistor RZ1 (overvoltage protection), and then passes through C1 and R18 for voltage reduction, the current limiting resistor R1 for current limiting, the voltage stabilizing diode ZR1 for primary voltage stabilization to obtain a 12V voltage, the diode D1 half-wave rectification, and the capacitor CE1 for filtering to obtain direct current. Thereafter, the LDO voltage stabilization U1, C2, and CE2 filter capacitors filter to obtain a 5V DC direct current voltage, which is used to power the MCU main control circuit 20, the display screen and other circuits.

[0031] Reference Figure 4 , which is a specific embodiment of the vibration sensor detection circuit 30, the vibration sensor detection circuit 30 includes a vibration sensor SW1. When the curling iron is in a stationary state, the vibration sensor SW1 outputs a fixed level to the MCU main control circuit 20. When the curling iron is in use, the vibration sensor SW1 outputs a jump level to the MCU main control circuit 20. Figure 4 As shown, the vibration sensor SW1 is connected to the 5V VCC power supply through the pull-up resistor R25. The product outputs a fixed level to the MCU (A2 / 1) when it is in a static state, and outputs a jump level to the MCU (A2 / 1) when the product is in use. The MCU determines whether the product is in a static state or in use by the level output by the sensor. If the static state exceeds a certain time, the standby temperature of the product will be reduced.

[0032] Reference Figure 5As shown in the figure, it is a specific embodiment diagram of the heating control circuit 40, and its working principle is as follows: after the ACL power supply is input, the AC power zero crossing detection is performed through R2, C8, and R22, and the MCU (Zero) detects the zero crossing signal. When heating, the thyristor is turned on at the zero point of the AC power to reduce the interference with the mains. The MCU (CONTROL) drives the unidirectional thyristor SCR1 to turn on and off through R8, Q2, R3, and D3 to power the heating element 50 for heating.

[0033] Reference Figure 6 As shown, it is a specific embodiment of the temperature detection circuit 60, and its working principle is as follows: when the thyristor is closed in the negative half cycle of the alternating current, the temperature of the heating element 50 is read, and the MCU (TMP EN) outputs a low level, and the current is limited by R20, the Q3 PNP transistor is turned on, and R21, D5 and the heating element 50 are divided by voltage (the resistance of the heating element 50 changes with the temperature). Thereafter, the voltage value of the heating element 50 is read by the MCU (TMP) through the low-pass filtering of the R23 resistor, and the corresponding temperature is calculated by the software.

[0034] Combination Figure 7 As shown in the figure, it is a specific embodiment of the temperature display circuit 70. The working principle of the temperature display circuit 70 is as follows: the display screen LCD1 is connected to the MCU (SEG1~SEG6, COM1~COM4) to display the set temperature and the real-time temperature of the heating element 50. The resistors R10~R17 provide half bias voltage for the four COM ports of the display screen. The three-primary color LED lamp LED1 is connected to the MCU (RED, GREEN, BLUE) through the current limiting resistors R4 / R5 / R6. Different colors of LEDs are lit at different temperatures as the backlight of the display screen.

[0035] Combination Figure 8 As shown, it is a circuit schematic diagram of the key detection circuit 80, and its working principle is as follows: the power button (POWER), the temperature plus button (ADD), and the temperature minus button (SUB), each button is individually connected in parallel with an anti-shake capacitor to realize hardware anti-shake, and the three buttons are respectively connected to the MCU (POWER, ADD, SUB) IO port, and the MCU software sets the pins connected to the buttons to quasi-bidirectional weak pull-up mode. The MCU reads the level status of the three buttons from time to time. The low level of the button means that the button is pressed, and the program executes the corresponding function of the button.

[0036] A curling iron standby cooling system of the present invention reduces the temperature of the heating element 50 when the product is stationary for more than a certain period of time by adding a vibration sensor. Low-temperature standby can save electric energy, and there is no risk of high-temperature fire, and normal use is not affected. Its working principle is as follows: the vibration sensor outputs a fixed level signal when it is stationary, and outputs a high-low changing level signal when it moves. The sensor is connected to the MCU IO port, and the MCU determines whether the curling iron is in a stationary state or in use by identifying the level signal of the vibration sensor. When the stationary state exceeds a certain period of time, the MCU controls the heating element 50 to lower the temperature and enter a low-temperature standby state. When picking up for use, the MCU recognizes the level change signal fed back by the vibration sensor, and the MCU controls the heating element 50 to heat up and quickly rise to the set temperature without affecting normal use.

[0037] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A curling iron standby cooling system, characterized in that: It includes a power supply circuit, an MCU main control circuit, a vibration sensor detection circuit, a heating control circuit, a heating element and a temperature detection circuit; The power supply circuit is electrically connected to the MCU main control circuit and the heating control circuit respectively, and is used to provide electrical energy during their operation; The vibration sensor detection circuit is electrically connected to the MCU main control circuit, and the MCU main control circuit determines whether the curling iron is in a static state or in use state through the signal sent by the vibration sensor detection circuit; The heating control circuit is connected to the MCU main control circuit, and the heating element is connected to the heating control circuit. The MCU main control circuit determines the state of the curling iron to control the heating of the heating element. The temperature detection circuit is electrically connected between the MCU main control circuit and the heating element. The temperature detection circuit detects the temperature of the heating element and sends the detection result to the MCU main control circuit.

2. A curling iron standby cooling system according to claim 1, characterized in that: When the MCU main control circuit judges the state of the curling iron, when the static state exceeds the set time, the MCU main control circuit controls the heating element to lower the temperature, so that the curling iron enters a low-temperature standby state; When it is determined that the curling iron is in use, the MCU main control circuit controls the heating of the heating element through the heating control circuit, so that the heating element is quickly heated to the set temperature.

3. A curling iron standby cooling system according to claim 1, characterized in that: The MCU main control circuit includes a main control chip IC1, and the model of the main control chip IC1 is HC89F0541 or STC8H1K16.

4. A curling iron standby cooling system according to claim 1, characterized in that: The power supply circuit comprises an AC high voltage input circuit, which is connected to the mains and is used to supply power to the heating control circuit.

5. A hair curler standby cooling system according to claim 4, characterized in that: The power supply circuit also includes a voltage stabilizing circuit, the input end of which is connected to the AC high voltage input circuit, and the output end of which is connected to the MCU main control circuit, for converting the mains power into direct current and supplying power to the MCU main control circuit.

6. A hair curler standby cooling system according to claim 5, characterized in that: The voltage stabilizing circuit converts the mains electricity into 5V direct current.

7. A hair curler standby cooling system according to claim 1, characterized in that: The vibration sensor detection circuit includes a vibration sensor SW1. When the curling iron is in a stationary state, the vibration sensor SW1 outputs a fixed level to the MCU main control circuit. When the curling iron is in use, the vibration sensor SW1 outputs a jump level to the MCU main control circuit.

8. A curling iron standby cooling system according to claim 1, characterized in that: The curling iron standby cooling system also includes a key detection circuit, which is electrically connected to the MCU main control circuit.

9. A hair curler standby cooling system according to claim 8, characterized in that: The key detection circuit includes a power on / off key, a temperature plus key and a temperature minus key.

10. A hair curler standby cooling system according to claim 1, characterized in that: The curling iron standby cooling system also includes a temperature display circuit, which is electrically connected to the MCU main control circuit.

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