Control method and device for shaving device, shaving device and storage medium

Abstract

The present invention provides a control method, device, shaving device, and storage medium for a shaving device. The shaving device includes a cutter head and a handle. The cutter head can be displaced relative to the handle body when subjected to external pressure. The shaving device is provided with a sensor unit, which includes a magnetic sensor and a magnetic member. The magnetic sensor is installed in a fixed position relative to the handle; the magnetic member is installed in a fixed position relative to a sensor carrier, and the sensor carrier can be displaced relative to the magnetic sensor in response to pressure applied to the cutter head. The control method includes: obtaining a first output signal of the Hall sensor; determining the displacement distance of the magnetic member based on the first output signal; determining the pressure value applied to the cutter head based on the displacement distance; and controlling the shaving device to perform a corresponding operation based on a comparison result of the pressure value and a preset threshold value. The embodiments of the present application can effectively avoid the problem of poor pressure control effect of the razor.

Description

Technical Field

[0001] The present invention relates to the technical field of shaving equipment, and in particular to a control method and device for shaving equipment, a shaving equipment and a storage medium. Background Art

[0002] In related technologies, shaving devices such as razors use pressure sensors to monitor the pressure of the blade head, thereby controlling the shaving process, such as providing warnings for excessive pressure and dynamically adjusting the razor blade speed. The pressure value is typically calculated by directly reading the magnetic field strength using a linear Hall pressure sensor.

[0003] However, there are problems with poor consistency of sensor signals in shaving equipment and assembly tolerance problems in razor equipment. For example, different magnets installed on the shaving equipment lead to different magnetic induction intensities, assembly tolerances lead to different distances between the magnets and linear Hall sensors on the shaving equipment, the magnetic field strength of the magnet decays over time, and the shaving equipment is subjected to a certain pressure and then turned on, resulting in different initial magnetic induction intensities. These problems will cause the use of pressure sensors to directly read the magnetic field strength to calculate the pressure on the blade inaccurately, resulting in poor pressure control effect of the razor. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] To this end, a first aspect of the present invention provides a control method for a shaving device.

[0006] A second aspect of the present invention provides a control device for a shaving device.

[0007] A third aspect of the present invention provides a shaving device.

[0008] A fourth aspect of the present invention provides a readable storage medium.

[0009] In view of this, a first aspect of the present invention provides a control method for a shaving device, the shaving device comprising a cutter head and a handle, the cutter head being displaceable relative to the handle when subjected to external pressure, the shaving device being provided with a sensor unit, the sensor unit comprising a magnetic sensor and a magnetic member, the magnetic sensor being mounted in a fixed position relative to the handle; the magnetic member being mounted in a fixed position relative to a sensor carrier, the sensor carrier being displaceable relative to the magnetic sensor in response to pressure applied to the cutter head, the control method comprising:

[0010] acquiring a first output signal of the magnetic sensor;

[0011] determining a displacement distance of the magnetic member according to the first output signal;

[0012] Determine the pressure value on the cutter head based on the displacement distance;

[0013] According to the comparison result between the pressure value and the preset threshold value, the shaving device is controlled to perform a corresponding operation.

[0014] In this technical solution, the shaving device can be an electric shaver, an electric hair remover, or the like. The shaving device includes a cutter head and a handle. The cutter head can move relative to the handle so as to keep the cutter head always in contact with the user's skin.

[0015] A magnetic part is provided on the cutter head, which is specifically a permanent magnetic part, such as iron-nickel-cobalt magnet, etc. Optionally, the cutter head includes a bracket, which is connected to the handle through a cutter head fixing seat. The permanent magnetic part is fixed on the bracket and moves with the cutter head.

[0016] A magnetic sensor is provided in the handle. The magnetic sensor can monitor the magnetic induction intensity of the magnetic part based on the Hall effect. The magnetic induction intensity can reflect the distance between the magnetic part and the magnetic sensor, that is, the distance between the blade and the handle. It can be understood that the closer the distance between the blade and the handle, the greater the pressure on the blade.

[0017] Specifically, since the magnetic field strength of the magnetic part is related to the composition of the magnetic part, the magnetic induction strength of magnetic parts in different batches may be uneven. At the same time, since there will be a certain degree of tolerance during the assembly of the shaving equipment, if the pressure on the cutter head is determined only based on the reading of the magnetic sensor, the pressure information obtained may not be accurate enough.

[0018] To address this situation, the embodiment of the present application acquires a first output signal collected by the magnetic sensor in real time during the operation of the shaving device. The first output signal is a magnetic induction intensity signal collected by the magnetic sensor. The displacement distance of the magnetic member is determined based on the first output signal.

[0019] When the blade is not under pressure, the distance between the blade and the handle remains balanced. Similarly, the distance between the magnetic element and the magnetic sensor also remains balanced. When the blade is under pressure, the greater the pressure, the greater the displacement of the blade and the magnetic element. Therefore, the displacement of the magnetic element can accurately reflect the pressure on the blade.

[0020] At the same time, since the displacement distance is the difference between the distance values before and after the pressure is applied, even if the magnetic force of the magnetic part changes or there is an assembly tolerance, it will not affect the displacement distance of the cutter head when it is subjected to pressure. Therefore, it can effectively avoid the problem of inaccurate pressure readings of the pressure sensor caused by poor consistency of the sensor signal or assembly tolerance of the shaver equipment.

[0021] After obtaining accurate pressure value data, the shaving device is controlled to perform corresponding operations based on the comparison result of the pressure value applied to the cutter head and the preset threshold value. For example, when the pressure value changes, the shaving device is controlled to change the speed, or when the pressure value is too large, the shaving device is controlled to issue a prompt message.

[0022] The embodiment of the present application determines the displacement distance of the cutter head relative to the handle based on the output signal of the magnetic sensor, and determines the pressure exerted on the cutter head based on the displacement distance, which can effectively avoid the problem of inaccurate pressure readings of the pressure sensor caused by sensor signal consistency problems or assembly tolerance problems of the razor device.

[0023] In addition, the control method in the above technical solution provided by the present invention may also have the following additional technical features:

[0024] In the above technical solution, before obtaining the output signal of the magnetic sensor, the control method further includes:

[0025] obtaining a second output signal of the magnetic sensor when the shaving device is turned on;

[0026] An initial magnetic induction intensity is determined according to the second output signal, where the initial magnetic induction intensity is the magnetic induction intensity detected by the magnetic sensor when the tool head is not affected by pressure.

[0027] In this technical solution, when the shaving device is turned on, the magnetic sensor is powered on at the same time. At this time, it is determined that the cutter head is in the initial position, that is, the position when it is not affected by pressure. At this time, the second output signal of the magnetic sensor is the output signal of the magnetic sensor when the cutter head is not affected by pressure.

[0028] The voltage value of the magnetic sensor's output signal is correlated with the magnetic induction intensity detected by the sensor. Specifically, the Hall effect is essentially the deflection of a moving charged object in a magnetic field due to the Lorentz force. When charged particles (such as electrons or holes) are confined in a solid material, this deflection results in the accumulation of positive and negative charges in a direction perpendicular to the current and magnetic field, forming an additional transverse electric field. The magnitude of this transverse electric field reflects the magnitude of the magnetic induction intensity, or in other words, the distance between the magnetic object and the magnetic sensor.

[0029] The corresponding magnetic induction intensity is recorded when the magnetic sensor outputs the second output signal. The magnetic induction intensity can reflect the distance between the magnetic member and the magnetic sensor when the tool head is not affected by pressure.

[0030] During the operation of the shaving device, when a change in the output signal of the magnetic sensor is detected, such as when the first output signal is detected in real time, the distance of displacement of the magnetic part relative to the initial position can be obtained based on the first output signal and the second output signal. The pressure on the cutter head is determined based on the displacement distance, which can effectively avoid the problem of inaccurate pressure measurement caused by assembly consistency problems and improve the user experience of the shaving device.

[0031] In any of the above technical solutions, determining the displacement distance of the magnetic member according to the first output signal includes:

[0032] determining a current magnetic induction intensity according to the first output signal;

[0033] Determine the change in magnetic induction intensity based on the current magnetic induction intensity and the initial magnetic induction intensity;

[0034] The displacement distance is determined based on the change in magnetic induction intensity.

[0035] In this technical solution, the first output signal is an output signal detected in real time by the magnetic sensor. The first output signal can reflect the magnetic induction intensity currently detected by the magnetic sensor, and the magnetic induction intensity can reflect the distance between the magnetic part and the magnetic sensor.

[0036] Based on the difference between the current magnetic induction intensity and the initial magnetic induction intensity, the change in the current magnetic induction intensity compared to the initial magnetic induction intensity is determined. This change can reflect the distance between the magnetic part and the magnetic sensor, that is, the difference between the distance between the blade and the handle and the distance between the blade and the handle when the blade is not under pressure.

[0037] Specifically, assuming the initial magnetic induction intensity is B0 and the current magnetic induction intensity is B1, the change in magnetic induction intensity is (B1-B0). At this time, according to the ratio of the change in magnetic induction intensity (B1-B0) ÷ B0, the displacement of the magnetic part can be calculated.

[0038] Since the present application determines the displacement distance based on the change in magnetic induction, that is, the difference, there is no need to ensure that the initial magnetic induction value, that is, the initial magnetic induction intensity and assembly position of the magnetic part are completely consistent with the preset value, which can avoid the problem of inaccurate pressure readings of the pressure sensor caused by sensor signal consistency problems or assembly tolerance problems of the shaver device.

[0039] In any of the above technical solutions, after obtaining the output signal of the magnetic sensor, the control method further includes:

[0040] When the current magnetic induction intensity is less than the initial magnetic induction intensity, the initial magnetic induction intensity is replaced by the current magnetic induction intensity;

[0041] When the current magnetic induction intensity is greater than or equal to the initial magnetic induction intensity, a step of determining the displacement distance of the magnetic member according to the first output signal is performed.

[0042] In this technical solution, since the initial magnetic induction intensity is the magnetic induction intensity when the cutter head is not affected by pressure, and the magnetic induction intensity increases as the distance decreases, and when the cutter head is subjected to pressure, the cutter head will move closer to the handle under the action of pressure, and the magnetic induction intensity will increase accordingly, the initial magnetic induction intensity will theoretically be smaller than the real-time magnetic induction intensity of the cutter head when it is subjected to pressure.

[0043] Since the initial magnetic induction intensity is determined when the shaving device is turned on, there is a certain probability that the cutter head is under pressure at this time. Therefore, when the current magnetic induction intensity detected by the magnetic sensor in real time is less than the initial magnetic induction intensity, it means that the calibrated initial magnetic induction intensity was calibrated when the cutter head was under pressure, and now that the pressure has disappeared, the magnetic induction intensity has decreased.

[0044] At this point, the calibrated magnetic induction intensity is replaced with the smaller current magnetic induction intensity to ensure the accuracy of the initial magnetic induction intensity and avoid inaccurate calibration caused by pressure on the cutter head during startup. If the current magnetic induction intensity is not less than the initial magnetic induction intensity, the step of determining the displacement of the magnetic component is directly executed.

[0045] Specifically, because the magnetic induction intensity is correlated with the voltage value of the magnetic sensor's output signal, adjustments can be made based on the relationship between the current voltage value V1 of the first output signal and the voltage value V0 of the second output signal calibrated at power-up. If V1 is greater than V0, the magnetic component displacement is determined based on the first signal. If V1 is less than V0, the initial magnetic induction intensity is replaced.

[0046] This application compares the currently detected magnetic induction intensity with the initial magnetic induction intensity, and when the current magnetic induction intensity is less than the initial magnetic induction intensity, updates the smaller value to the new initial magnetic induction intensity, thereby avoiding inaccurate calibration caused by pressure on the cutter head when the machine is turned on, and improving the accuracy of pressure monitoring.

[0047] In any of the above technical solutions, the shaving device further includes an elastic member, which is arranged between the cutter head and the handle;

[0048] Determine the pressure value on the cutter head based on the displacement distance, including:

[0049] The pressure value is determined according to the displacement distance and the elastic coefficient of the elastic member.

[0050] In this technical solution, the blade head is connected to the handle via an elastic member, which can specifically include a spring, compression spring, or spring clip. When the blade head is not subject to pressure, the elastic member is in a relaxed state. When the blade head is subject to pressure, it moves toward the handle under the influence of the pressure, reducing the distance between the blade head and the handle and correspondingly compressing the elastic member.

[0051] Under the same pressure, the distance the blade moves relative to the handle is related to the elastic coefficient of the elastic member. It is understood that the greater the elastic coefficient of the elastic member, the shorter the distance the blade moves relative to the handle under the same pressure. The smaller the elastic coefficient of the elastic member, the greater the distance the blade moves relative to the handle under the same pressure.

[0052] Therefore, the pressure on the cutter head can be determined by determining the moving distance of the magnetic member and the elastic coefficient of the elastic member.

[0053] The present application determines the pressure on the cutter head based on the elastic coefficient of the elastic part and the displacement distance of the magnetic part, which can avoid the problem of inaccurate pressure measurement caused by assembly consistency problems and improve the accuracy of pressure monitoring.

[0054] In any of the above technical solutions, the preset threshold value includes a first threshold value;

[0055] According to the comparison result between the pressure value and the preset threshold value, the shaving device is controlled to perform corresponding operations, including:

[0056] When the pressure value is greater than or equal to a first threshold, controlling the shaving device to issue an over-pressure prompt message;

[0057] The overvoltage prompt information includes: light prompt information, sound prompt information and / or vibration prompt information.

[0058] In this technical solution, if the pressure value detected on the cutter head is greater than the preset first threshold, it means that the cutter head is subjected to too much force, which may cause the blade to operate poorly, resulting in scratches or motor stalling. At this time, the shaving device will issue a corresponding over-pressure prompt message.

[0059] The overpressure warning can be a light prompt, such as a flashing red indicator light, or a controlled overpressure warning light. It can also include an audio prompt, such as controlling the shaving device's speaker to play a preset overpressure warning tone. This tone can be a short "beep" or a hidden prompt that reads "Blade head overpressure, please reduce pressure." The overpressure warning can also be a vibration prompt, such as controlling the shaving device's vibration motor to rotate, causing the entire device to vibrate, alerting the user to excessive pressure.

[0060] The present application compares the pressure value on the cutter head with a first threshold value, thereby prompting overpressure when the pressure value is greater than the first threshold value, avoiding poor operation of the blade when the pressure is too high, preventing scratches or motor stalling, and ensuring the safe use of the shaving equipment.

[0061] In any of the above technical solutions, the cutter head includes a blade, the handle includes a motor, the motor is used to drive the cutter head to move, and the preset threshold value also includes a second threshold value;

[0062] According to the comparison result between the pressure value and the preset threshold value, the shaving device is controlled to perform corresponding operations, including:

[0063] When the pressure value is greater than or equal to the second threshold value and less than the first threshold value, the motor is controlled to change the rotation speed.

[0064] In this technical solution, a blade is provided in the cutter head, and the blade includes a rotating shaft. The rotating shaft can be connected to the output end of the motor, so that the motor drives the blade to rotate to achieve functions such as shaving and beard shaving.

[0065] If the pressure detected on the shaving head is less than the first threshold but greater than or equal to the second threshold, it indicates that the shaving head is under pressure, but not over-pressure. At this point, the rotation of the blades will be affected to a certain extent by the pressure. In this case, the shaving device controls the motor speed to increase, thereby offsetting the impact of the pressure on the blades' rotation and ensuring a good shaving effect.

[0066] A second aspect of the present invention provides a control device for a shaving device, the shaving device comprising a cutter head and a handle, the cutter head being displaceable relative to the handle when subjected to external pressure, the shaving device being provided with a sensor unit comprising a magnetic sensor and a magnetic member, the magnetic sensor being mounted in a fixed position relative to the handle; the magnetic member being mounted in a fixed position relative to a sensor carrier, the sensor carrier being displaceable relative to the magnetic sensor in response to pressure applied to the cutter head, the control device comprising:

[0067] an acquisition module, configured to acquire a first output signal of the magnetic sensor;

[0068] a determination module, configured to determine a displacement distance of the magnetic member according to the first output signal; and determine a pressure value applied to the cutter head according to the displacement distance;

[0069] The control module is used to control the shaving device to perform corresponding operations according to the comparison result between the pressure value and the preset threshold value.

[0070] In this technical solution, the shaving device can be an electric shaver, an electric hair remover, or the like. The shaving device includes a cutter head and a handle. The cutter head can move relative to the handle so as to keep the cutter head always in contact with the user's skin.

[0071] A magnetic part is provided on the cutter head, which is specifically a permanent magnetic part, such as iron-nickel-cobalt magnet, etc. Optionally, the cutter head includes a bracket, which is connected to the handle through a cutter head fixing seat. The permanent magnetic part is fixed on the bracket and moves with the cutter head.

[0072] A magnetic sensor is provided in the handle. The magnetic sensor can monitor the magnetic induction intensity of the magnetic part based on the Hall effect. The magnetic induction intensity can reflect the distance between the magnetic part and the magnetic sensor, that is, the distance between the blade and the handle. It can be understood that the closer the distance between the blade and the handle, the greater the pressure on the blade.

[0073] Specifically, since the magnetic field strength of the magnetic part is related to the composition of the magnetic part, the magnetic induction strength of magnetic parts in different batches may be uneven. At the same time, since there will be a certain degree of tolerance during the assembly of the shaving equipment, if the pressure on the cutter head is determined only based on the reading of the magnetic sensor, the pressure information obtained may not be accurate enough.

[0074] To address this situation, the embodiment of the present application acquires a first output signal collected by the magnetic sensor in real time during the operation of the shaving device. The first output signal is a magnetic induction intensity signal collected by the magnetic sensor. The displacement distance of the magnetic member is determined based on the first output signal.

[0075] When the blade is not under pressure, the distance between the blade and the handle remains balanced. Similarly, the distance between the magnetic element and the magnetic sensor also remains balanced. When the blade is under pressure, the greater the pressure, the greater the displacement of the blade and the magnetic element. Therefore, the displacement of the magnetic element can accurately reflect the pressure on the blade.

[0076] At the same time, since the displacement distance is the difference between the distance values before and after the pressure is applied, even if the magnetic force of the magnetic part changes or there is an assembly tolerance, it will not affect the displacement distance of the cutter head when it is subjected to pressure. Therefore, it can effectively avoid the problem of inaccurate pressure readings of the pressure sensor caused by sensor signal consistency problems or assembly tolerance problems of the shaver equipment.

[0077] After obtaining accurate pressure value data, the shaving device is controlled to perform corresponding operations based on the comparison result of the pressure value applied to the cutter head and the preset threshold value. For example, when the pressure value changes, the shaving device is controlled to change the speed, or when the pressure value is too large, the shaving device is controlled to issue a prompt message.

[0078] The embodiment of the present application determines the displacement distance of the cutter head relative to the handle based on the output signal of the magnetic sensor, and determines the pressure exerted on the cutter head based on the displacement distance, which can effectively avoid the problem of inaccurate pressure readings of the pressure sensor caused by sensor signal consistency problems or assembly tolerance problems of the razor device.

[0079] The third aspect of the present invention provides a shaving device, comprising: a memory for storing programs or instructions; a processor for implementing the steps of the control method provided in any of the above technical solutions when executing the programs or instructions. Therefore, the shaving device also includes all the beneficial effects of the control method provided in any of the above technical solutions. To avoid repetition, they will not be repeated here.

[0080] In the above technical solution, the shaving device includes: a handle; a cutter head, which can be displaced relative to the handle when subjected to external pressure; a sensor unit, which includes a magnetic sensor and a magnetic part, and the magnetic sensor is installed in a fixed position relative to the handle; the magnetic part is installed in a fixed position relative to the sensor carrier, and the sensor carrier can be displaced relative to the magnetic sensor in response to the pressure applied to the cutter head.

[0081] In this technical solution, the magnetic sensor can be a Hall effect sensor, and the magnetic element can be a magnetic element. When a user uses the shaving device, the shaving head will be displaced relative to the handle under the user's force. The greater the user's force, the greater the displacement distance. Therefore, by monitoring the displacement of the magnetic element by the Hall effect sensor, the user's pressing force at that time can be determined, thereby adjusting the speed of the shaving device and other factors.

[0082] The fourth aspect of the present invention provides a readable storage medium having a program or instruction stored thereon. When the program or instruction is executed by a processor, the steps of the control method provided in any of the above technical solutions are implemented. Therefore, the readable storage medium also includes all the beneficial effects of the control method provided in any of the above technical solutions. To avoid repetition, they will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0083] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0084] Figure 1 shows one of the flow charts of the control method according to an embodiment of the present invention;

[0085] Figure 2 Shown is a structural diagram of a shaving device according to an embodiment of the present invention;

[0086] Figure 3 A second flowchart of a control method according to an embodiment of the present invention is shown;

[0087] Figure 4 A structural block diagram of a control device according to an embodiment of the present invention is shown.

[0088] Reference numerals:

[0089] 200 : cutter head, 202 : handle, 204 : magnetic sensor, 206 : magnetic component, 208 : sensor carrier, 210 : elastic component. DETAILED DESCRIPTION

[0090] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0091] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0092] Refer to the following Figures 1 to 4 The present invention describes a control method, an apparatus, a shaving device, and a storage medium for a shaving device according to some embodiments of the present invention.

[0093] In some embodiments of the present invention, a control method for a shaving device is provided. The shaving device includes a cutter head and a handle. The cutter head can be displaced relative to the handle when subjected to external pressure. A sensor unit is provided on the shaving device. The sensor unit includes a magnetic sensor and a magnetic part. The magnetic sensor is installed in a fixed position relative to the handle; the magnetic part is installed in a fixed position relative to the sensor carrier. The sensor carrier can be displaced relative to the magnetic sensor in response to pressure applied to the cutter head. The handle is provided with a magnetic sensor.

[0094] Figure 1 FIG. 1 shows one of the flow charts of the control method according to an embodiment of the present invention. Figure 1 As shown, the control method includes:

[0095] Step 102, obtaining a first output signal of the magnetic sensor;

[0096] Step 104: determining the displacement distance of the magnetic component according to the first output signal;

[0097] Step 106, determining the pressure value on the cutter head according to the displacement distance;

[0098] Step 108: Control the shaving device to perform a corresponding operation based on the comparison result between the pressure value and the preset threshold.

[0099] In an embodiment of the present invention, the shaving device may be an electric shaver, an electric hair remover, or the like. The shaving device includes a cutter head and a handle. The cutter head can move relative to the handle so as to keep the cutter head always in contact with the user's skin.

[0100] Figure 2 FIG. 1 shows a structural diagram of a shaving device according to an embodiment of the present invention. Figure 2 As shown, the shaving device includes a cutter head 200 and a handle 202 , a sensor carrier 208 is provided on the cutter head 200 or the handle 202 , a magnetic member 206 is installed in the sensor carrier 208 , and a magnetic member 206 is provided in the handle 202 .

[0101] In some possible implementations, the magnetic sensor 204 may be a Hall effect sensor, and the magnetic member 206 may be a magnetic member. When a user uses the shaving device, the shaving head 200 is displaced relative to the handle 202 under the user's force. At this time, the sensor carrier 208 is displaced relative to the magnetic sensor 204, and the magnetic member 206 is displaced relative to the magnetic sensor 204 in a synchronous manner.

[0102] Specifically, the magnetic sensor 204 can monitor the magnetic induction intensity of the magnetic part 206 based on the Hall effect. The magnetic induction intensity can reflect the distance between the magnetic part 206 and the magnetic sensor 204, that is, the distance between the cutting head 200 and the handle 202. It can be understood that the closer the distance between the cutting head 200 and the handle 202, the greater the pressure on the cutting head 200.

[0103] Specifically, since the magnetic field strength of the magnetic part is related to the composition of the magnetic part, the magnetic induction strength of magnetic parts in different batches may be uneven. At the same time, since there will be a certain degree of tolerance during the assembly of the shaving equipment, if the pressure on the cutter head is determined only based on the reading of the magnetic sensor, the pressure information obtained may not be accurate enough.

[0104] To address this situation, the embodiment of the present application acquires a first output signal collected by the magnetic sensor in real time during the operation of the shaving device. The first output signal is a magnetic induction intensity signal collected by the magnetic sensor. The displacement distance of the magnetic member is determined based on the first output signal.

[0105] When the blade is not under pressure, the distance between the blade and the handle remains balanced. Similarly, the distance between the magnetic element and the magnetic sensor also remains balanced. When the blade is under pressure, the greater the pressure, the greater the displacement of the blade and the magnetic element. Therefore, the displacement of the magnetic element can accurately reflect the pressure on the blade.

[0106] At the same time, since the displacement distance is the difference between the distance values before and after the pressure is applied, even if the magnetic force of the magnetic part changes or there is an assembly tolerance, it will not affect the displacement distance of the cutter head when it is subjected to pressure. Therefore, it can effectively avoid the problem of inaccurate pressure readings of the pressure sensor caused by sensor signal consistency problems or assembly tolerance problems of the shaver equipment.

[0107] After obtaining accurate pressure value data, the shaving device is controlled to perform corresponding operations based on the comparison result of the pressure value applied to the cutter head and the preset threshold value. For example, when the pressure value changes, the shaving device is controlled to change the speed, or when the pressure value is too large, the shaving device is controlled to issue a prompt message.

[0108] The embodiment of the present application determines the displacement distance of the cutter head relative to the handle based on the output signal of the magnetic sensor, and determines the pressure exerted on the cutter head based on the displacement distance, which can effectively avoid the problem of inaccurate pressure readings of the pressure sensor caused by sensor signal consistency problems or assembly tolerance problems of the razor device.

[0109] In some embodiments of the present invention, before acquiring the output signal of the magnetic sensor, the control method further includes:

[0110] obtaining a second output signal of the magnetic sensor when the shaving device is turned on;

[0111] An initial magnetic induction intensity is determined based on the second output signal. The initial magnetic induction intensity is the magnetic induction intensity detected by the magnetic sensor when the tool head is not affected by pressure, and the initial magnetic induction intensity is associated with the voltage value of the second output signal.

[0112] In an embodiment of the present invention, when the shaving device is turned on and powered on, the magnetic sensor is powered on at the same time. At this time, it is determined that the cutter head is in the initial position, that is, the position when it is not affected by pressure. At this time, the second output signal of the magnetic sensor is the output signal of the magnetic sensor when the cutter head is not affected by pressure.

[0113] The voltage value of the magnetic sensor's output signal is correlated with the magnetic induction intensity detected by the sensor. Specifically, the Hall effect is essentially the deflection of a moving charged object in a magnetic field due to the Lorentz force. When charged particles (such as electrons or holes) are confined in a solid material, this deflection results in the accumulation of positive and negative charges in a direction perpendicular to the current and magnetic field, forming an additional transverse electric field. The magnitude of this transverse electric field reflects the magnitude of the magnetic induction intensity, or in other words, the distance between the magnetic object and the magnetic sensor.

[0114] The corresponding magnetic induction intensity is recorded when the magnetic sensor outputs the second output signal. The magnetic induction intensity can reflect the distance between the magnetic member and the magnetic sensor when the tool head is not affected by pressure.

[0115] During the operation of the shaving device, when a change in the output signal of the magnetic sensor is detected, such as when the first output signal is detected in real time, the distance of displacement of the magnetic part relative to the initial position can be obtained based on the first output signal and the second output signal. The pressure on the cutter head is determined based on the displacement distance, which can effectively avoid the problem of inaccurate pressure measurement caused by assembly consistency problems and improve the user experience of the shaving device.

[0116] In some embodiments of the present invention, determining the displacement distance of the magnetic member according to the first output signal includes:

[0117] determining a current magnetic induction intensity according to the first output signal, wherein the current magnetic induction intensity is associated with a voltage value of the first output signal;

[0118] Determine the change in magnetic induction intensity based on the current magnetic induction intensity and the initial magnetic induction intensity, wherein the initial magnetic induction intensity is determined based on the initial voltage value;

[0119] The displacement distance is determined based on the change in magnetic induction intensity.

[0120] In the embodiment of the present invention, the first output signal is an output signal detected in real time by the magnetic sensor. The first output signal can reflect the magnetic induction intensity currently detected by the magnetic sensor, and the magnetic induction intensity can reflect the distance between the magnetic component and the magnetic sensor.

[0121] Based on the difference between the current magnetic induction intensity and the initial magnetic induction intensity, the change in the current magnetic induction intensity compared to the initial magnetic induction intensity is determined. This change can reflect the distance between the magnetic part and the magnetic sensor, that is, the difference between the distance between the blade and the handle and the distance between the blade and the handle when the blade is not under pressure.

[0122] Specifically, assuming the initial magnetic induction intensity is B0 and the current magnetic induction intensity is B1, the change in magnetic induction intensity is (B1-B0). At this time, according to the ratio of the change in magnetic induction intensity (B1-B0) ÷ B0, the displacement of the magnetic part can be calculated.

[0123] Since the present application determines the displacement distance based on the change in magnetic induction, that is, the difference, there is no need to ensure that the initial magnetic induction value, that is, the initial magnetic induction intensity and assembly position of the magnetic part are completely consistent with the preset value, which can avoid the problem of inaccurate pressure readings of the pressure sensor caused by sensor signal consistency problems or assembly tolerance problems of the shaver device.

[0124] In some embodiments of the present invention, after acquiring the output signal of the magnetic sensor, the control method further includes:

[0125] When the current magnetic induction intensity is less than the initial magnetic induction intensity, the initial magnetic induction intensity is replaced by the current magnetic induction intensity;

[0126] When the current magnetic induction intensity is greater than or equal to the initial magnetic induction intensity, a step of determining the displacement distance of the magnetic member according to the first output signal is performed.

[0127] In an embodiment of the present invention, since the initial magnetic induction intensity is the magnetic induction intensity when the cutting head is not affected by pressure, and the magnetic induction intensity increases as the distance decreases, and when the cutting head is subjected to pressure, the cutting head will move closer to the handle under the action of pressure, and the magnetic induction intensity will increase accordingly, the initial magnetic induction intensity will theoretically be smaller than the real-time magnetic induction intensity of the cutting head when it is subjected to pressure.

[0128] Since the initial magnetic induction intensity is determined when the shaving device is turned on, there is a certain probability that the cutter head is under pressure at this time. Therefore, when the current magnetic induction intensity detected by the magnetic sensor in real time is less than the initial magnetic induction intensity, it means that the calibrated initial magnetic induction intensity was calibrated when the cutter head was under pressure, and now that the pressure has disappeared, the magnetic induction intensity has decreased.

[0129] At this point, the calibrated magnetic induction intensity is replaced with the smaller current magnetic induction intensity to ensure the accuracy of the initial magnetic induction intensity and avoid inaccurate calibration caused by pressure on the cutter head during startup. If the current magnetic induction intensity is not less than the initial magnetic induction intensity, the step of determining the displacement of the magnetic component is directly executed.

[0130] Specifically, because the magnetic induction intensity is correlated with the voltage value of the magnetic sensor's output signal, adjustments can be made based on the relationship between the current voltage value V1 of the first output signal and the voltage value V0 of the second output signal calibrated at power-up. If V1 is greater than V0, the magnetic component displacement is determined based on the first signal. If V1 is less than V0, the initial magnetic induction intensity is replaced.

[0131] This application compares the currently detected magnetic induction intensity with the initial magnetic induction intensity, and when the current magnetic induction intensity is less than the initial magnetic induction intensity, updates the smaller value to the new initial magnetic induction intensity, thereby avoiding inaccurate calibration caused by pressure on the cutter head when the machine is turned on, and improving the accuracy of pressure monitoring.

[0132] In some embodiments of the present invention, Figure 2 As shown, the shaving device further includes an elastic member 210 , which is disposed between the cutter head 200 and the handle 202 ;

[0133] Determine the pressure value on the cutter head based on the displacement distance, including:

[0134] The pressure value is determined according to the displacement distance and the elastic coefficient of the elastic member.

[0135] In an embodiment of the present invention, the blade head is connected to the handle via an elastic member, wherein the elastic member may specifically include a spring, a compression spring, or a spring. When the blade head is not subject to pressure, the elastic member is in a relaxed state. When the blade head is subject to pressure, the blade head moves toward the handle under the influence of the pressure, reducing the distance between the blade head and the handle and correspondingly compressing the elastic member.

[0136] Under the same pressure, the distance the blade moves relative to the handle is related to the elastic coefficient of the elastic member. It is understood that the greater the elastic coefficient of the elastic member, the shorter the distance the blade moves relative to the handle under the same pressure. The smaller the elastic coefficient of the elastic member, the greater the distance the blade moves relative to the handle under the same pressure.

[0137] Therefore, the pressure on the cutter head can be determined by determining the moving distance of the magnetic member and the elastic coefficient of the elastic member.

[0138] The present application determines the pressure on the cutter head based on the elastic coefficient of the elastic part and the displacement distance of the magnetic part, which can avoid the problem of inaccurate pressure measurement caused by assembly consistency problems and improve the accuracy of pressure monitoring.

[0139] In some embodiments of the present invention, the preset threshold comprises a first threshold;

[0140] According to the comparison result between the pressure value and the preset threshold value, the shaving device is controlled to perform corresponding operations, including:

[0141] When the pressure value is greater than or equal to a first threshold, controlling the shaving device to issue an over-pressure prompt message;

[0142] The overvoltage prompt information includes: light prompt information, sound prompt information and / or vibration prompt information.

[0143] In an embodiment of the present invention, if the pressure value detected on the cutter head is greater than a preset first threshold, it means that the cutter head is subjected to too much force, which may cause the blade to operate poorly, resulting in scratches or motor stalling. At this time, the shaving device issues a corresponding over-pressure prompt message.

[0144] The overpressure warning can be a light prompt, such as a flashing red indicator light, or a controlled overpressure warning light. It can also include an audio prompt, such as controlling the shaving device's speaker to play a preset overpressure warning tone. This tone can be a short "beep" or a hidden prompt that reads "Blade head overpressure, please reduce pressure." The overpressure warning can also be a vibration prompt, such as controlling the shaving device's vibration motor to rotate, causing the entire device to vibrate, alerting the user to excessive pressure.

[0145] The present application compares the pressure value on the cutter head with a first threshold value, thereby prompting overpressure when the pressure value is greater than the first threshold value, avoiding poor operation of the blade when the pressure is too high, preventing scratches or motor stalling, and ensuring the safe use of the shaving equipment.

[0146] In some embodiments of the present invention, the preset threshold includes a first threshold; based on the comparison result of the pressure value and the preset threshold, the shaving device is controlled to perform corresponding operations, including: when the pressure value is greater than or equal to the first threshold, the shaving device motor is controlled to reduce the speed.

[0147] In some embodiments of the present invention, the cutting head includes a blade, the handle includes a motor, the motor is used to drive the cutting head to move, and the preset threshold value further includes a second threshold value;

[0148] According to the comparison result between the pressure value and the preset threshold value, the shaving device is controlled to perform corresponding operations, including:

[0149] When the pressure value is greater than or equal to the second threshold value and less than the first threshold value, the motor is controlled to change the rotation speed.

[0150] In an embodiment of the present invention, a blade is provided in the cutter head. The blade includes a rotating shaft. The rotating shaft can be connected to the output end of the motor, so that the motor drives the blade to rotate to achieve functions such as shaving and beard shaving.

[0151] If the pressure detected on the shaving head is less than the first threshold but greater than or equal to the second threshold, it indicates that the shaving head is under pressure, but not over-pressure. At this point, the rotation of the blades will be affected to a certain extent by the pressure. In this case, the shaving device controls the motor speed to increase, thereby offsetting the impact of the pressure on the blades' rotation and ensuring a good shaving effect.

[0152] If the pressure value of the cutter head is detected to be less than the second threshold value, the corresponding shaving device has not yet contacted the part of the human body where hair needs to be removed, and there is no need to control the motor speed.

[0153] In some embodiments of the present invention, Figure 3 FIG. 2 shows a second flow chart of a control method according to an embodiment of the present invention. Figure 3 As shown, the control method includes:

[0154] Step 302, start Hall sensor sampling;

[0155] Step 304: collecting the voltage value of the output signal of the Hall sensor when the device is powered on and recording it as the initial voltage value V0;

[0156] Step 306: collect the voltage value of the output signal of the Hall sensor in real time and record it as V1;

[0157] Step 308, determine whether V1 is greater than V0; if so, proceed to step 312, otherwise proceed to step 310;

[0158] Step 310, replace V0 with V1; after executing step 310, return to step 306;

[0159] Step 312, determining the magnetic induction intensity B0 when the cutter head is not under pressure and the magnetic induction intensity B1 when the cutter head is under pressure based on the output signal of the Hall sensor;

[0160] Step 314, calculating the ratio of change in magnetic induction intensity;

[0161] In step 314 , the change ratio is (B1-B0)÷B0;

[0162] Step 316, determining the displacement distance X of the magnetic component according to the change ratio of the magnetic induction intensity;

[0163] Step 318, determining the pressure value of the cutter head based on the displacement of the magnetic member and the elastic coefficient K of the elastic member;

[0164] In step 318, the pressure value F=K×X applied to the cutting head;

[0165] Step 320, determine whether F is greater than the first threshold F1; if yes, proceed to step 322, otherwise proceed to step 324;

[0166] Step 322, overvoltage prompt;

[0167] Step 324, determine whether F is greater than the second threshold F2; if so, proceed to step 326, otherwise end;

[0168] Step 326, increase the motor speed.

[0169] In the embodiment of the present application, for example, when the razor head is not subjected to external pressure, the distance between the magnet and the magnetic sensor is 2mm to 5mm, preferably 3.5mm. When the razor head is subjected to a certain pressure, the distance between the magnet and the magnetic sensor is compressed to 1mm-4mm, preferably 2.5mm. At this time, the output voltage of the linear Hall effect sensor changes with the change in magnetic induction intensity. The microcontroller calculates the displacement of the magnet by reading the voltage value output by the magnetic sensor, and then calculates the pressure based on the elastic coefficient of the spring, thereby realizing pressure sensing.

[0170] The present application calculates the magnitude of the pressure by calculating the ratio of change in magnetic field strength, thereby solving the consistency problem of different assembly tolerances of different machines and different magnetic field strengths of different magnets.

[0171] In some embodiments of the present invention, a control device for a shaving device is provided. The shaving device includes a cutter head and a handle. The cutter head can be displaced relative to the handle when subjected to external pressure. The shaving device is provided with a sensor unit, the sensor unit including a magnetic sensor and a magnetic member. The magnetic sensor is mounted in a fixed position relative to the handle; the magnetic member is mounted in a fixed position relative to a sensor carrier. The sensor carrier can be displaced relative to the magnetic sensor in response to pressure applied to the cutter head. Figure 4 FIG. 4 shows a structural block diagram of a control device according to an embodiment of the present invention. Figure 4 As shown, the control device 400 includes:

[0172] An acquisition module 402 is configured to acquire a first output signal of the magnetic sensor;

[0173] The determination module 404 is configured to determine the displacement distance of the magnetic member according to the first output signal; and determine the pressure value applied to the cutter head according to the displacement distance;

[0174] The control module 406 is used to control the shaving device to perform corresponding operations according to the comparison result between the pressure value and the preset threshold.

[0175] In an embodiment of the present invention, the shaving device may be an electric shaver, an electric hair remover, or the like. The shaving device includes a cutter head and a handle. The cutter head can move relative to the handle so as to keep the cutter head always in contact with the user's skin.

[0176] Figure 2 FIG. 1 shows a structural diagram of a shaving device according to an embodiment of the present invention. Figure 2 As shown, the shaving device includes a cutter head 200 and a handle 202 . A sensor carrier 208 is provided on the cutter head 200 , a magnetic member 206 is installed in the sensor carrier 208 , and a magnetic member 206 is provided in the handle 202 .

[0177] In some possible implementations, the magnetic sensor 204 may be a Hall effect sensor, and the magnetic member 206 may be a magnetic member. When a user uses the shaving device, the shaving head 200 is displaced relative to the handle 202 under the user's force. At this time, the sensor carrier 208 is displaced relative to the magnetic sensor 204, and the magnetic member 206 is displaced relative to the magnetic sensor 204 in a synchronous manner.

[0178] Specifically, the magnetic sensor 204 can monitor the magnetic induction intensity of the magnetic part 206 based on the Hall effect. The magnetic induction intensity can reflect the distance between the magnetic part 206 and the magnetic sensor 204, that is, the distance between the cutting head 200 and the handle 202. It can be understood that the closer the distance between the cutting head 200 and the handle 202, the greater the pressure on the cutting head 200.

[0179] Specifically, since the magnetic field strength of the magnetic part is related to the composition of the magnetic part, the magnetic induction strength of magnetic parts in different batches may be uneven. At the same time, since there will be a certain degree of tolerance during the assembly of the shaving equipment, if the pressure on the cutter head is determined only based on the reading of the magnetic sensor, the pressure information obtained may not be accurate enough.

[0180] To address this situation, the embodiment of the present application acquires a first output signal collected by the magnetic sensor in real time during the operation of the shaving device. The first output signal is a magnetic induction intensity signal collected by the magnetic sensor. The displacement distance of the magnetic member is determined based on the first output signal.

[0181] When the blade is not under pressure, the distance between the blade and the handle remains balanced. Similarly, the distance between the magnetic element and the magnetic sensor also remains balanced. When the blade is under pressure, the greater the pressure, the greater the displacement of the blade and the magnetic element. Therefore, the displacement of the magnetic element can accurately reflect the pressure on the blade.

[0182] At the same time, since the displacement distance is the difference between the distance values before and after the pressure is applied, even if the magnetic force of the magnetic part changes or there is an assembly tolerance, it will not affect the displacement distance of the cutter head when it is subjected to pressure. Therefore, it can effectively avoid the problem of inaccurate pressure readings of the pressure sensor caused by sensor signal consistency problems or assembly tolerance problems of the shaver equipment.

[0183] After obtaining accurate pressure value data, the shaving device is controlled to perform corresponding operations based on the comparison result of the pressure value applied to the cutter head and the preset threshold value. For example, when the pressure value changes, the shaving device is controlled to change the speed, or when the pressure value is too large, the shaving device is controlled to issue a prompt message.

[0184] The embodiment of the present application determines the displacement distance of the cutter head relative to the handle based on the output signal of the magnetic sensor, and determines the pressure exerted on the cutter head based on the displacement distance, which can effectively avoid the problem of inaccurate pressure readings of the pressure sensor caused by sensor signal consistency problems or assembly tolerance problems of the razor device.

[0185] In some embodiments of the present invention, the acquisition module is further configured to acquire a second output signal of the magnetic sensor when the shaving device is powered on;

[0186] The determination module is also used to determine the initial magnetic induction intensity based on the second output signal. The initial magnetic induction intensity is the magnetic induction intensity detected by the magnetic sensor when the cutter head is not affected by pressure, and the initial magnetic induction intensity is associated with the voltage value of the second output signal.

[0187] In an embodiment of the present invention, when the shaving device is turned on and powered on, the magnetic sensor is powered on at the same time. At this time, it is determined that the cutter head is in the initial position, that is, the position when it is not affected by pressure. At this time, the second output signal of the magnetic sensor is the output signal of the magnetic sensor when the cutter head is not affected by pressure.

[0188] The voltage value of the magnetic sensor's output signal is correlated with the magnetic induction intensity detected by the sensor. Specifically, the Hall effect is essentially the deflection of a moving charged object in a magnetic field due to the Lorentz force. When charged particles (such as electrons or holes) are confined in a solid material, this deflection results in the accumulation of positive and negative charges in a direction perpendicular to the current and magnetic field, forming an additional transverse electric field. The magnitude of this transverse electric field reflects the magnitude of the magnetic induction intensity, or in other words, the distance between the magnetic object and the magnetic sensor.

[0189] The corresponding magnetic induction intensity is recorded when the magnetic sensor outputs the second output signal. The magnetic induction intensity can reflect the distance between the magnetic member and the magnetic sensor when the tool head is not affected by pressure.

[0190] During the operation of the shaving device, when a change in the output signal of the magnetic sensor is detected, such as when the first output signal is detected in real time, the distance of displacement of the magnetic part relative to the initial position can be obtained based on the first output signal and the second output signal. The pressure on the cutter head is determined based on the displacement distance, which can effectively avoid the problem of inaccurate pressure measurement caused by assembly consistency problems and improve the user experience of the shaving device.

[0191] In some embodiments of the present invention, the determination module is further configured to:

[0192] determining a current magnetic induction intensity according to the first output signal, wherein the current magnetic induction intensity is associated with a voltage value of the first output signal;

[0193] Determine the change in magnetic induction intensity based on the current magnetic induction intensity and the initial magnetic induction intensity, wherein the initial magnetic induction intensity is determined based on the initial voltage value;

[0194] The displacement distance is determined based on the change in magnetic induction intensity.

[0195] In the embodiment of the present invention, the first output signal is an output signal detected in real time by the magnetic sensor. The first output signal can reflect the magnetic induction intensity currently detected by the magnetic sensor, and the magnetic induction intensity can reflect the distance between the magnetic component and the magnetic sensor.

[0196] Based on the difference between the current magnetic induction intensity and the initial magnetic induction intensity, the change in the current magnetic induction intensity compared to the initial magnetic induction intensity is determined. This change can reflect the distance between the magnetic part and the magnetic sensor, that is, the difference between the distance between the blade and the handle and the distance between the blade and the handle when the blade is not under pressure.

[0197] Specifically, assuming the initial magnetic induction intensity is B0 and the current magnetic induction intensity is B1, the change in magnetic induction intensity is (B1-B0). At this time, according to the ratio of the change in magnetic induction intensity (B1-B0) ÷ B0, the displacement of the magnetic part can be calculated.

[0198] Since the present application determines the displacement distance based on the change in magnetic induction, that is, the difference, there is no need to ensure that the initial magnetic induction value, that is, the initial magnetic induction intensity and assembly position of the magnetic part are completely consistent with the preset value, which can avoid the problem of inaccurate pressure readings of the pressure sensor caused by sensor signal consistency problems or assembly tolerance problems of the shaver device.

[0199] In some embodiments of the present invention, the control device further comprises:

[0200] A data replacement module, configured to replace the initial magnetic induction intensity with the current magnetic induction intensity when the current magnetic induction intensity is less than the initial magnetic induction intensity;

[0201] The execution module is used to execute the step of determining the displacement distance of the magnetic component according to the first output signal when the current magnetic induction intensity is greater than or equal to the initial magnetic induction intensity.

[0202] In an embodiment of the present invention, since the initial magnetic induction intensity is the magnetic induction intensity when the cutting head is not affected by pressure, and the magnetic induction intensity increases as the distance decreases, and when the cutting head is subjected to pressure, the cutting head will move closer to the handle under the action of pressure, and the magnetic induction intensity will increase accordingly, the initial magnetic induction intensity will theoretically be smaller than the real-time magnetic induction intensity of the cutting head when it is subjected to pressure.

[0203] Since the initial magnetic induction intensity is determined when the shaving device is turned on, there is a certain probability that the cutter head is under pressure at this time. Therefore, when the current magnetic induction intensity detected by the magnetic sensor in real time is less than the initial magnetic induction intensity, it means that the calibrated initial magnetic induction intensity was calibrated when the cutter head was under pressure, and now that the pressure has disappeared, the magnetic induction intensity has decreased.

[0204] At this point, the calibrated magnetic induction intensity is replaced with the smaller current magnetic induction intensity to ensure the accuracy of the initial magnetic induction intensity and avoid inaccurate calibration caused by pressure on the cutter head during startup. If the current magnetic induction intensity is not less than the initial magnetic induction intensity, the step of determining the displacement of the magnetic component is directly executed.

[0205] Specifically, because the magnetic induction intensity is correlated with the voltage value of the magnetic sensor's output signal, adjustments can be made based on the relationship between the current voltage value V1 of the first output signal and the voltage value V0 of the second output signal calibrated at power-up. If V1 is greater than V0, the magnetic component displacement is determined based on the first signal. If V1 is less than V0, the initial magnetic induction intensity is replaced.

[0206] This application compares the currently detected magnetic induction intensity with the initial magnetic induction intensity, and when the current magnetic induction intensity is less than the initial magnetic induction intensity, updates the smaller value to the new initial magnetic induction intensity, thereby avoiding inaccurate calibration caused by pressure on the cutter head when the machine is turned on, and improving the accuracy of pressure monitoring.

[0207] In some embodiments of the present invention, the shaving device further comprises an elastic member, and the cutter head is connected to the handle via the elastic member;

[0208] The determination module is further configured to determine a pressure value according to the displacement distance and the elastic coefficient of the elastic member.

[0209] In an embodiment of the present invention, the blade head is connected to the handle via an elastic member, wherein the elastic member may specifically include a spring, a compression spring, or a spring. When the blade head is not subject to pressure, the elastic member is in a relaxed state. When the blade head is subject to pressure, the blade head moves toward the handle under the influence of the pressure, reducing the distance between the blade head and the handle and correspondingly compressing the elastic member.

[0210] Under the same pressure, the distance the blade moves relative to the handle is related to the elastic coefficient of the elastic member. It is understood that the greater the elastic coefficient of the elastic member, the shorter the distance the blade moves relative to the handle under the same pressure. The smaller the elastic coefficient of the elastic member, the greater the distance the blade moves relative to the handle under the same pressure.

[0211] Therefore, the pressure on the cutter head can be determined by determining the moving distance of the magnetic member and the elastic coefficient of the elastic member.

[0212] The present application determines the pressure on the cutter head based on the elastic coefficient of the elastic part and the displacement distance of the magnetic part, which can avoid the problem of inaccurate pressure measurement caused by assembly consistency problems and improve the accuracy of pressure monitoring.

[0213] In some embodiments of the present invention, the preset threshold comprises a first threshold;

[0214] The control module is further configured to control the shaving device to issue an over-pressure prompt message when the pressure value is greater than or equal to a first threshold value;

[0215] The overvoltage prompt information includes: light prompt information, sound prompt information and / or vibration prompt information.

[0216] In an embodiment of the present invention, if the pressure value detected on the cutter head is greater than a preset first threshold, it means that the cutter head is subjected to too much force, which may cause the blade to operate poorly, resulting in scratches or motor stalling. At this time, the shaving device issues a corresponding over-pressure prompt message.

[0217] The overpressure warning can be a light prompt, such as a flashing red indicator light, or a controlled overpressure warning light. It can also include an audio prompt, such as controlling the shaving device's speaker to play a preset overpressure warning tone. This tone can be a short "beep" or a hidden prompt that reads "Blade head overpressure, please reduce pressure." The overpressure warning can also be a vibration prompt, such as controlling the shaving device's vibration motor to rotate, causing the entire device to vibrate, alerting the user to excessive pressure.

[0218] The present application compares the pressure value on the cutter head with a first threshold value, thereby prompting overpressure when the pressure value is greater than the first threshold value, avoiding poor operation of the blade when the pressure is too high, preventing scratches or motor stalling, and ensuring the safe use of the shaving equipment.

[0219] In some embodiments of the present invention, the cutting head includes a blade, the handle includes a motor, the motor is used to drive the cutting head to move, and the preset threshold value further includes a second threshold value;

[0220] The control module is further configured to control the motor to change its rotation speed when the pressure value is greater than or equal to the second threshold and less than the first threshold.

[0221] In an embodiment of the present invention, a blade is provided in the cutter head. The blade includes a rotating shaft. The rotating shaft can be connected to the output end of the motor, so that the motor drives the blade to rotate to achieve functions such as shaving and beard shaving.

[0222] If the pressure detected on the shaving head is less than the first threshold but greater than or equal to the second threshold, it indicates that the shaving head is under pressure, but not over-pressure. At this point, the rotation of the blades will be affected to a certain extent by the pressure. In this case, the shaving device controls the motor speed to increase, thereby offsetting the impact of the pressure on the blades' rotation and ensuring a good shaving effect.

[0223] In some embodiments of the present invention, a shaving device is provided, comprising: a memory for storing programs or instructions; a processor for implementing the steps of the control method provided in any of the above embodiments when executing the programs or instructions. Therefore, the shaving device also includes all the beneficial effects of the control method provided in any of the above embodiments. To avoid repetition, they will not be repeated here.

[0224] Based on the above embodiment, the shaving device includes: a handle; a cutter head, which can be displaced relative to the handle when subjected to external pressure; a sensor unit, the sensor unit including a magnetic sensor and a magnetic member, the magnetic sensor is installed in a fixed position relative to the handle; the magnetic member is installed in a fixed position relative to the sensor carrier, and the sensor carrier can be displaced relative to the magnetic sensor in response to pressure applied to the cutter head.

[0225] In an embodiment of the present invention, the magnetic sensor may be a Hall effect sensor, and the magnetic element may be a magnetic element. When a user uses the shaving device, the cutter head will be displaced relative to the handle under the force applied by the user. The greater the force applied by the user, the greater the displacement distance. Therefore, by monitoring the displacement of the magnetic element by the Hall effect sensor, the user's pressing force at that time can be determined, thereby adjusting the speed of the shaving device, etc.

[0226] In some embodiments of the present invention, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the control method provided in any of the above embodiments are implemented. Therefore, the readable storage medium also includes all the beneficial effects of the control method provided in any of the above embodiments. To avoid repetition, they will not be repeated here.

[0227] In the description of the present invention, the term "plurality" refers to two or more than two. Unless otherwise expressly defined, the orientation or positional relationship indicated by the terms "upper" and "lower" is based on the orientation or positional relationship described in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention. The terms "connection", "installation", "fixed", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0228] In the description of the present invention, the terms "one embodiment," "some embodiments," "specific embodiments," etc., mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0229] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A control method for a shaving device, characterized in that: The shaving device includes a cutter head and a handle, wherein the cutter head is displaceable relative to the handle when subjected to external pressure. The shaving device is provided with a sensor unit, wherein the sensor unit includes a magnetic sensor and a magnetic member. The magnetic sensor is mounted in a fixed position relative to the handle; the magnetic member is mounted in a fixed position relative to a sensor carrier, and the sensor carrier is displaceable relative to the magnetic sensor in response to pressure applied to the cutter head. The control method includes: acquiring a first output signal of the magnetic sensor; obtaining a second output signal of the magnetic sensor when the shaving device is turned on; determining a current magnetic induction intensity according to the first output signal; determining an initial magnetic induction intensity according to the second output signal, where the initial magnetic induction intensity is the magnetic induction intensity detected by the magnetic sensor when the tool head is not affected by pressure; Determining a change in magnetic induction intensity based on the current magnetic induction intensity and the initial magnetic induction intensity; determining a displacement distance of the magnetic member according to the change in magnetic induction intensity; determining a pressure value applied to the cutter head according to the displacement distance; According to the comparison result between the pressure value and the preset threshold, the shaving device is controlled to perform a corresponding operation.

2. The control method according to claim 1, characterized in that: After acquiring the output signal of the magnetic sensor, the control method further includes: When the current magnetic induction intensity is less than the initial magnetic induction intensity, replacing the initial magnetic induction intensity with the current magnetic induction intensity; In a case where the current magnetic induction intensity is greater than or equal to the initial magnetic induction intensity, the step of determining the displacement distance of the magnetic component according to the first output signal is performed.

3. The control method according to claim 1, wherein: The shaving device further comprises an elastic member, wherein the elastic member is provided between the cutter head and the handle; Determining the pressure value applied to the cutter head according to the displacement distance includes: The pressure value is determined according to the displacement distance and the elastic coefficient of the elastic member.

4. The control method according to any one of claims 1 to 3, characterized in that: The preset threshold includes a first threshold; According to the comparison result between the pressure value and the preset threshold, controlling the shaving device to perform a corresponding operation includes: When the pressure value is greater than or equal to the first threshold, controlling the shaving device to issue an over-pressure prompt message; The overvoltage prompt information includes: light prompt information, sound prompt information and / or vibration prompt information.

5. The control method according to claim 4, characterized in that: The cutter head includes a blade, the handle includes a motor, the motor is used to drive the cutter head to move, and the preset threshold value further includes a second threshold value; According to the comparison result between the pressure value and the preset threshold, controlling the shaving device to perform a corresponding operation includes: When the pressure value is greater than or equal to the second threshold value and less than the first threshold value, the motor is controlled to change its rotation speed.

6. A control device for a shaving device, characterized in that: The shaving device includes a cutter head and a handle, wherein the cutter head is displaceable relative to the handle when subjected to external pressure. The shaving device is provided with a sensor unit, wherein the sensor unit includes a magnetic sensor and a magnetic member. The magnetic sensor is mounted in a fixed position relative to the handle; the magnetic member is mounted in a fixed position relative to a sensor carrier, and the sensor carrier is displaceable relative to the magnetic sensor in response to pressure applied to the cutter head. The control device includes: an acquisition module, configured to acquire a first output signal of the magnetic sensor and a second output signal of the magnetic sensor when the shaving device is powered on; a determination module, configured to determine a current magnetic induction intensity based on the first output signal, determine an initial magnetic induction intensity based on the second output signal, wherein the initial magnetic induction intensity is the magnetic induction intensity detected by the magnetic sensor when the cutter head is not affected by pressure, determine a change in magnetic induction intensity based on the current magnetic induction intensity and the initial magnetic induction intensity, determine a displacement distance of the magnetic member based on the change in magnetic induction intensity, and determine a pressure value applied to the cutter head based on the displacement distance; The control module is used to control the shaving device to perform corresponding operations according to the comparison result between the pressure value and the preset threshold value.

7. A shaving device, characterized in that: include: Memory, used to store programs or instructions; A processor, configured to implement the steps of the control method according to any one of claims 1 to 5 when executing the program or instruction.

8. A readable storage medium having a program or instruction stored thereon, characterized in that: When the program or instruction is executed by a processor, the steps of the control method according to any one of claims 1 to 5 are implemented.

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