Control circuit of defeatherer and defeatherer thereof

Abstract

The utility model relates to the technical field of defeatherers, in particular to a defeatherer control circuit and a defeatherer thereof, comprising an MCU control module, a motor detection and control circuit, a charge and discharge control circuit and a key input circuit, the motor detection and control circuit and the key input circuit are respectively and electrically connected with the MCU control module, and the charge and discharge control circuit is electrically connected with the MCU control module. The charging and discharging control circuit provides electric energy for the whole circuit. By integrating the MCU control module and the motor detection control circuit, the gear adjusting function is achieved, the rotating speed of the motor can be switched by pressing a power key for a short time, the electric hair plucking machine is matched with livestock hair of different thicknesses such as duck feather and chicken feather, and the pertinence and efficiency of plucking operation are improved; meanwhile, the current sampling branch can monitor the current of the motor in real time, for example, when 15A locked-rotor current is detected, the MCU can quickly control the motor to stop, the motor is effectively prevented from being damaged due to locked rotor, the service life of equipment is prolonged, and mechanical damage to livestock meat is reduced.

Description

Technical Field

[0001] This utility model relates to the field of hair removal device technology, and in particular to a hair removal device control circuit and the hair removal device thereof. Background Technology

[0002] In the poultry and livestock meat processing industry, efficient and thorough removal of hair from poultry and livestock such as pigs, dogs, ducks, and chickens is a crucial step in ensuring product quality and processing efficiency. Whether it's small-scale family slaughter, daily processing in small and medium-sized farms, or large-scale industrial production, the effectiveness of hair removal directly impacts the subsequent processing, storage, and sale of poultry and livestock meat.

[0003] Traditional manual plucking methods not only rely on a large amount of manpower, which is labor-intensive and inefficient, making it difficult to meet the needs of large-scale processing, but also easily damage the surface of poultry and livestock meat due to improper force control during the operation, increasing the risk of microbial contamination. At the same time, the excessive processing time can also affect the freshness of poultry and livestock meat.

[0004] To address these issues, electric poultry and livestock plucking machines have emerged as a specialized mechanized tool, widely used in home slaughtering, small and medium-sized farms, and industrial processing. Compared to traditional manual plucking, electric plucking machines significantly improve plucking efficiency through mechanized operation, drastically reducing labor costs. They also allow for more precise control of plucking force, effectively minimizing damage to poultry and livestock meat during processing, ensuring hygiene and the integrity of the meat, and providing strong support for the efficient and standardized development of the poultry and livestock meat processing industry.

[0005] However, existing electric plucking machines for poultry and livestock still have certain limitations in practical applications. On the one hand, existing equipment lacks adjustable speed settings, making it impossible to tailor adjustments based on different types of poultry and livestock, the thickness of their hair, and the cuts of meat. This leads to incomplete plucking or excessive damage to the meat when processing different types of hair, resulting in poor applicability. On the other hand, when the plucking head encounters hair entanglement or obstruction during the plucking process, causing a stall, existing equipment cannot react in time to stop the motor. This can not only damage the motor due to continuous stalling, affecting the equipment's lifespan, but also cause additional mechanical damage to the meat during the stall, potentially posing a safety hazard.

[0006] Therefore, in view of the above-mentioned defects of existing electric poultry and livestock plucking devices, developing an improved electric poultry and livestock plucking device with gear adjustment function and the ability to stop the motor in time when the cone head is stuck has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0007] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0008] A hair removal device control circuit includes an MCU control module, a motor detection and control circuit, a charge and discharge control circuit, and a key input circuit. The motor detection and control circuit and the key input circuit are electrically connected to the MCU control module, and the charge and discharge control circuit provides power to the entire circuit.

[0009] The motor detection and control circuit includes:

[0010] The power supply circuit includes a positive DC power supply terminal, a negative DC power supply terminal, a motor connection terminal MA+, and a motor connection terminal MA-. The positive DC power supply terminal is electrically connected to the motor connection terminal MA+, and the negative DC power supply terminal is electrically connected to the motor connection terminal MA-.

[0011] The switch control branch includes a PWM signal input terminal, a current-limiting resistor R4, a pull-down resistor R3, and a MOSFET. The MCU control module is electrically connected to the PWM signal input terminal. The current-limiting resistor R4 is connected in series between the PWM signal input terminal and the gate of the MOSFET. The two ends of the pull-down resistor R3 are connected to the gate of the MOSFET and the negative terminal of the DC power supply, respectively. The source and drain of the MOSFET are connected in series between the negative terminal of the DC power supply and the motor connection terminal MA-.

[0012] The current sampling branch includes sampling resistor R19, sampling resistor R6, signal conditioning resistor R7, and current sampling output terminal. Sampling resistors R19 and R6 are connected in parallel and then in series between the source of the MOSFET and the negative terminal of the DC power supply. Signal conditioning resistor R7 is connected in series between the source of the MOSFET and the current sampling output terminal.

[0013] Preferably, the charge / discharge control circuit provides a 12V power supply to the positive terminal of the DC power supply.

[0014] Preferably, the power supply circuit further includes a reverse protection element D2 and a filter element C2, with the reverse protection element D2 connected in series between the motor connection terminal MA+ and the motor connection terminal MA-.

[0015] Preferably, the sampling resistors R19 and R6 are composed of two 0.1Ω resistors connected in parallel, with an equivalent resistance of 0.05Ω; the signal conditioning resistor R7 has a resistance of 1KΩ.

[0016] Preferably, the MCU control module uses chip U1 with signal PFS121-1J16A.

[0017] Preferably, it also includes an LED indicator circuit electrically connected to the MCU control module. The LED indicator circuit is provided with a low-power light-emitting diode LED1, a medium-power light-emitting diode LED2, a high-power light-emitting diode LED3, a low-power light-emitting diode LED4, and a high-power light-emitting diode LED5.

[0018] A hair removal device includes the aforementioned hair removal device control circuit and a handheld body. A hair removal cone is rotatably connected to the front end of the handheld body. A motor, powered by the hair removal cone, is integrated inside the handheld body. The handheld body also integrates a battery, a charging interface, a control panel, and a drive button. The motor is electrically connected to motor connection terminals MA+ and MA- via the drive button. The battery and charging interface are both electrically connected to a charge / discharge control circuit. A power button is provided on the control panel. The hair removal device control circuit is connected to the control panel, mechanically connecting the power button to the button input circuit.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] By integrating an MCU control module and a motor detection and control circuit, the system achieves gear adjustment functionality. Motor speed can be switched by short-pressing the power button, adapting to poultry and livestock feathers of different thicknesses, such as duck feathers and chicken feathers, thus improving the targeting and efficiency of plucking operations. At the same time, the current sampling branch can monitor the motor current in real time. For example, when a 15A stall current is detected, the MCU can quickly control the motor to stop, effectively preventing motor damage due to stalling, extending the service life of the equipment, and reducing mechanical damage to poultry and livestock meat.

[0021] The LED indicator circuit allows users to intuitively understand the equipment status through power and gear indicator lights, making operation more convenient. The charging and discharging control circuit provides a stable 12V power supply, and together with reverse protection and filtering components, it ensures the stability and safety of circuit operation. Combined with the integrated design of the handheld main unit, it improves the applicability of the equipment in scenarios such as home slaughtering and small and medium-sized farms. It reduces labor costs and reduces poultry and livestock meat damage through precise control, thus balancing work efficiency and processing hygiene.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a block diagram of the circuit connection module of this utility model;

[0025] Figure 2 This is the circuit schematic diagram of the MCU control module in this utility model;

[0026] Figure 3 This is the circuit diagram of the motor detection and control circuit in this utility model;

[0027] Figure 4 This is the circuit diagram of the key input circuit in this utility model;

[0028] Figure 5 This is a circuit diagram of the charging and discharging control circuit in this utility model;

[0029] Figure 6 This is a circuit diagram of the LED indicator circuit in this utility model;

[0030] Figure 7 This is a schematic diagram of the structure of this utility model;

[0031] Figure 8 This is a schematic diagram of the disassembled structure of this utility model.

[0032] The reference numerals and names in the figure are as follows:

[0033] MCU control module 10, motor detection and control circuit 20, charging and discharging control circuit 30, key input circuit 40, LED indicator circuit 50, handheld body 60, hair-plucking cone 61, motor 62, battery 63, charging interface 64, control panel 65, drive button 66, power button 67. Detailed Implementation

[0034] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] Please see Figure 1-8 In this embodiment of the utility model, a hair removal device includes a hair removal device control circuit and a handheld body 60;

[0036] The hair removal device control circuit includes an MCU control module 10, a motor detection and control circuit 20, a charge and discharge control circuit 30, and a key input circuit 40. The MCU control module 10 uses a chip U1 with a signal of PFS121-1J16A. The motor detection and control circuit 20 and the key input circuit 40 are electrically connected to the MCU control module 10, and the charge and discharge control circuit 30 provides power to the entire circuit.

[0037] The motor detection and control circuit 20 includes:

[0038] The power supply circuit includes a positive DC power supply terminal, a negative DC power supply terminal, a motor connection terminal MA+, and a motor connection terminal MA-. The positive DC power supply terminal is electrically connected to the motor connection terminal MA+, and the negative DC power supply terminal is electrically connected to the motor connection terminal MA-. The charging and discharging control circuit 30 provides 12V power to the positive DC power supply terminal. The power supply circuit also includes a reverse protection element D2 and a filter element C2. The reverse protection element D2 is connected in series between the motor connection terminals MA+ and MA-.

[0039] The switch control branch includes a PWM signal input terminal, a current-limiting resistor R4, a pull-down resistor R3, and a MOSFET. The MCU control module 10 is electrically connected to the PWM signal input terminal. The current-limiting resistor R4 is connected in series between the PWM signal input terminal and the gate of the MOSFET. The two ends of the pull-down resistor R3 are connected to the gate of the MOSFET and the negative terminal of the DC power supply, respectively. The source and drain of the MOSFET are connected in series between the negative terminal of the DC power supply and the motor connection terminal MA-.

[0040] The current sampling branch includes sampling resistor R19, sampling resistor R6, signal conditioning resistor R7, and a current sampling output terminal. Sampling resistors R19 and R6 are connected in parallel and then in series between the source of the MOSFET and the negative terminal of the DC power supply. The signal conditioning resistor R7 is connected in series between the source of the MOSFET and the current sampling output terminal. Sampling resistors R19 and R6 are composed of two 0.1Ω resistors connected in parallel, with an equivalent resistance of 0.05Ω. The resistance of the signal conditioning resistor R7 is 1KΩ.

[0041] The hair removal device control circuit also includes an LED indicator circuit 50 electrically connected to the MCU control module 10. The LED indicator circuit 50 is equipped with a low-power LED LED1, a medium-power LED LED2, a high-power LED LED3, a low-power LED LED4, and a high-power LED LED5.

[0042] The front end of the handheld body 60 is rotatably connected to a plucking cone 61. The handheld body 60 integrates a motor 62 that is powered by the plucking cone 61. The handheld body 60 also integrates a battery 63, a charging interface 64, a control panel 65, and a drive button 66. The motor 62 is electrically connected to the motor connection terminals MA+ and MA- via the drive button 66. The battery 63 and the charging interface 64 are both electrically connected to the charging and discharging control circuit 30. The control panel 65 is equipped with a power button 67. The plucking control circuit is connected to the control panel, so that the power button 67 is mechanically connected to the button input circuit 40.

[0043] In the above embodiment, the hair removal device control circuit uses chip U1 of model PFS121-1J16A as MCU control module 10 to coordinate the operation of motor detection and control circuit 20, charging and discharging control circuit 30, key input circuit 40 and LED indicator circuit 50. Each functional circuit is electrically connected to MCU control module 10, and charging and discharging control circuit 30 provides stable power to the entire system.

[0044] Please see Figure 3 The motor detection and control circuit 20 consists of a power supply circuit, a switch control branch, and a current sampling branch. The power supply circuit consists of a DC power supply positive terminal, a DC power supply negative terminal, a motor connection terminal MA+, a motor connection terminal MA-, a reverse protection element D2, and a filter element C2. The 12V power supply provided by the charging and discharging control circuit 30 is connected to the DC power supply positive terminal and forms a power supply circuit through the motor connection terminal MA+, the motor 62, and the motor connection terminal MA- in sequence. The reverse protection element D2 is connected in series between the motor connection terminals MA+ and MA-, which can effectively prevent circuit damage caused by reverse connection of the motor 62. The filter element C2 can reduce power fluctuations and ensure stable operation of the motor 62. The switch control branch receives the PWM signal output from the MCU control module 10 via the PWM signal input terminal. This signal is transmitted to the gate of the MOSFET via the current-limiting resistor R4. The two ends of the pull-down resistor R3 are connected to the gate of the MOSFET and the negative terminal of the DC power supply, respectively, to ensure that the MOSFET is reliably cut off when there is no signal. The source and drain of the MOSFET are connected in series between the negative terminal of the DC power supply and the motor connection terminal MA-. The switching on and off of the motor 62 circuit is controlled by the conduction and switching off of the MOSFET. At the same time, the speed of the motor 62 is adjusted by adjusting the duty cycle of the PWM signal. In the current sampling branch, the sampling resistors R19 and R6 are two 0.1Ω resistors connected in parallel, with an equivalent resistance of 0.05Ω. They are connected in series between the source of the MOSFET and the negative terminal of the DC power supply. The voltage difference generated when the operating current of the motor 62 flows through it is conditioned by the 1KΩ signal conditioning resistor R7 and transmitted to the MCU control module 10 via the current sampling output terminal to realize the real-time monitoring of the operating current of the motor 62.

[0045] The LED indicator circuit 50 is electrically connected to the MCU control module 10. The low-power LED1, medium-power LED2, and high-power LED3 indicate the low, medium, and high power status of the battery 63, respectively. The low-speed LED4 and high-speed LED5 correspond to the low and high-speed operation status of the motor 62, allowing users to intuitively understand the working status of the equipment.

[0046] The handheld main body 60 serves as the operating carrier of the device. Its front end is rotatably connected to a plucking cone 61. The internally integrated motor 62 is connected to the plucking cone 61 to provide power for the plucking operation. The handheld main body 60 also integrates a battery 63, a charging interface 64, a control panel 65, and a drive button 66. The motor 62 is electrically connected to the motor connection terminals MA+ and MA- through the drive button 66. The battery 63 and the charging interface 64 are both connected to the charging and discharging control circuit 30 to realize energy storage and replenishment. The power button 67 on the control panel 65 is mechanically connected to the key input circuit 40. The user sends commands to the MCU control module 10 by operating the power button 67. For example, pressing and holding the power button 67 for 2 seconds can control the motor 62 to turn on or off, and pressing the power button 67 briefly can switch gears.

[0047] In actual operation, when the user presses and holds the power button for 672 seconds, the MCU control module 10 receives the signal from the button input circuit 40 and controls the motor 62 to start. At this time, the 12V power provided by the charging and discharging control circuit 30 powers the motor 62 through the power supply circuit. The MOSFET controls the speed of the motor 62 according to the PWM signal output by the MCU. Combined with the gear adjustment achieved by short-pressing the power button 67, it meets the needs of different hair removal scenarios. At the same time, the current sampling branch monitors the current of the motor 62 in real time. When the current reaches the stall threshold of 15A, the MCU control module 10 immediately controls the MOSFET to turn off, stopping the motor 62 and preventing damage to the motor 62 due to stalling. The LED indicator circuit 50 provides real-time feedback on the current battery level and gear status. During charging, the charging and discharging control circuit 30 charges the battery 63. The MCU monitors the battery level of the battery 63 through relevant circuits and controls the corresponding LED to light up, ensuring that the user can understand the device's battery status in a timely manner.

[0048] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A control circuit for a hair removal device, characterized in that, It includes an MCU control module (10), a motor detection and control circuit (20), a charge and discharge control circuit (30), and a key input circuit (40). The motor detection and control circuit (20) and the key input circuit (40) are electrically connected to the MCU control module (10), and the charge and discharge control circuit (30) provides power to the entire circuit. The motor detection and control circuit (20) includes: The power supply circuit includes a positive DC power supply terminal, a negative DC power supply terminal, a motor connection terminal MA+, and a motor connection terminal MA-. The positive DC power supply terminal is electrically connected to the motor connection terminal MA+, and the negative DC power supply terminal is electrically connected to the motor connection terminal MA-. The switch control branch includes a PWM signal input terminal, a current limiting resistor R4, a pull-down resistor R3, and a MOSFET. The MCU control module (10) is electrically connected to the PWM signal input terminal. The current limiting resistor R4 is connected in series between the PWM signal input terminal and the gate of the MOSFET. The two ends of the pull-down resistor R3 are connected to the gate of the MOSFET and the negative terminal of the DC power supply, respectively. The source and drain of the MOSFET are connected in series between the negative terminal of the DC power supply and the motor connection terminal MA-. The current sampling branch includes sampling resistor R19, sampling resistor R6, signal conditioning resistor R7, and current sampling output terminal. Sampling resistors R19 and R6 are connected in parallel and then in series between the source of the MOSFET and the negative terminal of the DC power supply. Signal conditioning resistor R7 is connected in series between the source of the MOSFET and the current sampling output terminal.

2. The hair removal device control circuit according to claim 1, characterized in that, The charge / discharge control circuit (30) provides 12V power to the positive terminal of the DC power supply.

3. The epilator control circuit according to claim 1, characterized in that, The power supply circuit also includes a reverse protection element D2 and a filter element C2. The reverse protection element D2 is connected in series between the motor connection terminal MA+ and the motor connection terminal MA-.

4. The hair removal device control circuit according to claim 1, characterized in that, The sampling resistors R19 and R6 are composed of two 0.1Ω resistors connected in parallel, with an equivalent resistance of 0.05Ω; the signal conditioning resistor R7 has a resistance of 1KΩ.

5. The hair removal device control circuit according to claim 1, characterized in that, The MCU control module (10) uses chip U1 with signal PFS121-1J16A.

6. The epilator control circuit according to claim 1, characterized in that, It also includes an LED indicator circuit (50) electrically connected to the MCU control module (10). The LED indicator circuit (50) is equipped with a low-power light-emitting diode LED1, a medium-power light-emitting diode LED2, a high-power light-emitting diode LED3, a low-power light-emitting diode LED4, and a high-power light-emitting diode LED5.

7. A hair removal device, comprising a hair removal device control circuit according to any one of claims 1-6, characterized in that, It also includes a handheld body (60), with a plucking cone (61) rotatably connected to the front end of the handheld body (60). The handheld body (60) is internally equipped with a motor (62) that is powered by the plucking cone (61). The handheld body (60) is also equipped with a battery (63), a charging interface (64), a control panel (65), and a drive button (66). The motor (62) is electrically connected to the motor connection terminal MA+ and the motor connection terminal MA- through the drive button (66). The battery (63) and the charging interface (64) are both electrically connected to the charging and discharging control circuit (30). The control panel (65) is equipped with a power button (67). The plucking control circuit is connected to the control panel, so that the power button (67) is mechanically connected to the key input circuit (40).

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