A power supply control method, device and system for an electric clipper

Abstract

The present application relates to the field of power supply control, and particularly relates to a power supply control method, device and system for an electric clipper. The method comprises: starting a driving motor; monitoring a detection distance of a working surface of the electric clipper to hair and a real-time current of the driving motor; determining a starting energy consumption of the driving motor if the real-time current tends to be stable to a target current; determining a motion state of the electric clipper after the detection distance is 0 for the first time; determining a first distance and a second distance if the motion state is a moving-away state, reducing the target current of the driving motor when the detection distance is greater than the first distance, and putting the driving motor to sleep when the detection distance is greater than the second distance; determining a third distance and a fourth distance if the motion state is a moving-closer state, increasing the target current of the driving motor when the detection distance is less than the third distance, so that the target current is equal to a gear current when the detection distance is equal to the fourth distance. The present application solves the problem that the energy consumption of the device cannot be effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of power control, and in particular to a power control method, apparatus and system for electric clippers. Background Technology

[0002] Electric hair clippers are power tools used for hairdressing and styling, and are mainly divided into two types: plug-in and rechargeable. Their structure consists of fixed clippers, movable clippers, an adjustment handle, a housing, and internal electrical components. They are powered by electricity, primarily alternating current (AC).

[0003] When a conventional electric hair clipper is turned on, it outputs a current corresponding to the current setting to drive the motor to rotate at a certain speed. During the haircut, the clipper maintains the output current corresponding to the current setting. However, in reality, the actual working time of the clipper—that is, the time spent cutting hair—is relatively short within the total operating time. Conversely, the time the clipper is not working, that is, the time it is away from the hair, accounts for a larger proportion of the total operating time.

[0004] In this way, the electric hair clipper runs continuously after being turned on, thus constantly consuming energy. Even when the electric hair clipper is not in use, energy consumption cannot be avoided. If the electric hair clipper is manually turned off to reduce energy consumption, firstly, it will affect the haircutting efficiency, and secondly, if the inactivity time is too short, frequent turning on may result in even higher energy consumption. Therefore, there is a problem of not being able to effectively reduce the energy consumption of the equipment. Summary of the Invention

[0005] Therefore, it is necessary to provide a power supply control method, device, and system for electric clippers to address the above-mentioned problems.

[0006] This invention is implemented as follows: a power supply control method for electric hair clippers, the power supply control method for electric hair clippers comprising:

[0007] S101: Determine the gear current of the drive motor of the electric clipper according to the gear selected by the user, set the target current as the gear current, and start the drive motor according to the target current.

[0008] S102, after the drive motor starts, monitor the detection distance from the working surface of the electric clipper to the hair and the real-time current of the drive motor;

[0009] S103, determine whether the real-time current is stable and tends towards the target current. If so, determine the starting energy consumption required for the drive motor to go from start-up to stability based on the changes in the real-time current.

[0010] S104, after the detection distance is 0 for the first time, the motion state of the electric clipper is determined based on the change in the detection distance;

[0011] S105, if the motion state is a distance away state, then determine the first distance and the second distance. When the detection distance is greater than the first distance, reduce the target current of the drive motor to reduce energy consumption, and the reduction of the target current increases with the increase of the detection distance. When the detection distance is greater than the second distance, put the drive motor into sleep mode to further reduce energy consumption.

[0012] S106, If the motion state is approaching, then determine the third distance and the fourth distance. When the detected distance is less than the third distance, increase the target current of the drive motor so that when the detected distance is equal to the fourth distance, the target current is equal to the gear current and ensures that the energy consumption increased when switching to the far-away state is minimized.

[0013] Among them, the first distance is less than the second distance, and the third distance is greater than the fourth distance.

[0014] In one embodiment, the present invention provides a power supply control device for electric hair clippers, the power supply control device for electric hair clippers comprising:

[0015] The motor start module is used to determine the gear current of the electric clipper's drive motor based on the gear selected by the user, set the target current as the gear current, and start the drive motor according to the target current.

[0016] The monitoring data module is used to monitor the detection distance from the working surface of the electric clipper to the hair and the real-time current of the drive motor after the drive motor is started.

[0017] The energy consumption calculation module is used to determine whether the real-time current is stable and tending towards the target current. If so, it determines the starting energy consumption required for the drive motor to go from start-up to stability based on the changes in the real-time current.

[0018] The status determination module is used to determine the motion state of the electric clipper based on the change in the detection distance after the detection distance is 0 for the first time.

[0019] The current reduction module is used to determine a first distance and a second distance if the motion state is a distance away state. When the detected distance is greater than the first distance, the target current of the drive motor is reduced to reduce energy consumption, and the reduction magnitude of the target current increases with the increase of the detected distance. When the detected distance is greater than the second distance, the drive motor is put into sleep mode to further reduce energy consumption.

[0020] The current increase module is used to determine the third and fourth distances if the motion state is approaching. When the detected distance is less than the third distance, the target current of the drive motor is increased so that when the detected distance is equal to the fourth distance, the target current is equal to the gear current and the increased energy consumption is minimized when switching to the far-away state.

[0021] Among them, the first distance is less than the second distance, and the third distance is greater than the fourth distance.

[0022] In one embodiment, the present invention provides a power supply control system for electric hair clippers, the power supply control system for electric hair clippers including electric hair clippers, a first sensor module, a second sensor module and a control module;

[0023] The first sensor module is located inside the electric hair clipper and is connected to the control module. It is used to detect the real-time current of the drive motor of the electric hair clipper.

[0024] The second sensor module is disposed on the scissor surface of the electric clipper and is connected to the control module to monitor the detection distance from the working surface of the electric clipper to the hair;

[0025] The control module is located inside the electric clipper and is used to execute the steps of the power supply control method for the electric clipper described above.

[0026] This invention provides a power supply control method for electric clippers. The method determines the gear current of the drive motor based on the user-selected gear, sets the target current as the gear current, and starts the drive motor according to the target current. After the drive motor starts, it monitors the detection distance from the working surface of the clipper to the hair and the real-time current of the drive motor. It determines whether the real-time current stably approaches the target current. If so, it determines the starting energy consumption required for the drive motor to stabilize based on the changes in the real-time current. After the detection distance is zero for the first time, it determines the movement state of the clipper based on the changes in the detection distance. If the movement state is a moving-away state, it determines a first distance and a second distance. When the detection distance is greater than the first distance, it reduces the target current of the drive motor to reduce energy consumption, and the magnitude of the reduction in the target current increases with the increase in the detection distance. When the detection distance is greater than the second distance, it puts the drive motor into sleep mode to further reduce energy consumption. If the movement state is a moving-in state, it determines a third distance and a fourth distance. When the detection distance is less than the third distance, it increases the target current of the drive motor so that when the detection distance is equal to the fourth distance, the target current equals the gear current, and the increased energy consumption when switching to the moving-away state is minimized. This approach dynamically adjusts the target current of the electric clipper's drive motor based on the detection distance and the clipper's movement state, even when the clipper's working surface is not in contact with the hair. This achieves the goal of decreasing the target current until it enters a dormant state when the clipper is far away, and increasing the target current until it reaches the operating current when the clipper is close. Furthermore, the magnitude of the decrease in target current increases with the greater the detection distance, and the magnitude of the increase increases with the smaller the detection distance. This significantly reduces the energy consumption of the electric clipper and ensures that the energy consumption changes from the previous movement state are minimized when switching movement states, thus solving the problem of not being able to effectively reduce equipment energy consumption. Attached Figure Description

[0027] Figure 1This is a flowchart of a power supply control method for an electric hair clipper in one embodiment;

[0028] Figure 2 This is a schematic diagram of the deceleration and acceleration models in a two-dimensional coordinate system;

[0029] Figure 3 This is a structural block diagram of a power supply control device for an electric hair clipper in one embodiment;

[0030] Figure 4 This is a structural block diagram of a power supply control system for an electric hair clipper in one embodiment;

[0031] Figure 5 This is a block diagram of the internal structure of the control module in one embodiment. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0033] It is understood that the terms "first," "second," etc., used in this invention may be used to describe various elements herein, but unless specifically stated otherwise, these elements are not limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of this invention, a first script may be referred to as a second script, and similarly, a second script may be referred to as a first script.

[0034] like Figure 1 As shown, in one embodiment, a power supply control method for electric clippers is proposed, which may specifically include the following steps:

[0035] S101: Determine the gear current of the drive motor of the electric clipper according to the gear selected by the user, set the target current as the gear current, and start the drive motor according to the target current.

[0036] S102, after the drive motor starts, monitor the detection distance from the working surface of the electric clipper to the hair and the real-time current of the drive motor;

[0037] S103, determine whether the real-time current is stable and tends towards the target current. If so, determine the starting energy consumption required for the drive motor to go from start-up to stability based on the changes in the real-time current.

[0038] S104, after the detection distance is 0 for the first time, the motion state of the electric clipper is determined based on the change in the detection distance;

[0039] S105, if the motion state is a distance away state, then determine the first distance and the second distance. When the detection distance is greater than the first distance, reduce the target current of the drive motor to reduce energy consumption, and the reduction of the target current increases with the increase of the detection distance. When the detection distance is greater than the second distance, put the drive motor into sleep mode to further reduce energy consumption.

[0040] S106, If the motion state is approaching, then determine the third distance and the fourth distance. When the detected distance is less than the third distance, increase the target current of the drive motor so that when the detected distance is equal to the fourth distance, the target current is equal to the gear current and ensures that the energy consumption increased when switching to the far-away state is minimized.

[0041] Among them, the first distance is less than the second distance, and the third distance is greater than the fourth distance.

[0042] In this embodiment, the electric hair clipper's speed settings correspond to speed setting current, speed setting voltage, and speed setting rotation speed. When a speed setting is selected, the corresponding parameters can be determined. The concepts of target current and speed setting current are different. The target current in this invention is variable and related to changes in the detection distance, while the speed setting current only changes when the speed setting changes.

[0043] In this embodiment, the detection distance between the working surface of the electric clipper and the hair can be achieved by an infrared sensor. When the detection distance is 0, it means that the working surface of the electric clipper is in contact with the hair.

[0044] In this embodiment, the concepts of real-time current and target current are different. Real-time current always moves closer to the target current. The target current is a pre-set value, while the real-time current is a following actual value. The value of the target current can change abruptly, but the change process of the value of the real-time current is continuous.

[0045] In this embodiment, in S103, there is a surge current at the moment the drive motor starts. The surge current is usually 3 to 5 times the gear current. Therefore, the change in real-time current is that it first surges and then falls back to near the target current.

[0046] In this embodiment, the movement state of the electric clippers is determined only after the detection distance is 0 for the first time, thus eliminating the process from the start of the electric clippers to the first contact with the hair.

[0047] In this embodiment, there are only two motion states: far away and near. If the motion is stationary, it belongs to the latest motion state.

[0048] In this embodiment, the third distance is less than the second distance but less than the first distance, and the fourth distance is less than the first distance.

[0049] In this embodiment, energy consumption is the product of power and time. The smaller the current, the lower the power, and therefore the lower the energy consumption. The magnitude of the decrease in target current increases with the increase in detection distance. Thus, if the motion state changes during the process of moving away, for example, when the distance is greater than the first distance but less than the second distance, the smaller the detection distance, the smaller the magnitude of the decrease in target current, and the easier it is to return to the gear current. When the detection distance is less than the third distance, the target current of the drive motor is increased so that when the detection distance is equal to the fourth distance, the target current equals the gear current, and the energy consumption increased when switching to the moving away state is minimized. During this process, the magnitude of the increase in target current increases with the decrease in detection distance.

[0050] In this embodiment, when the target current changes, the real-time current does not necessarily immediately equal the target current, but rather tends to move closer to the target current.

[0051] In this embodiment, if the electric hair clipper does not have other functions, such as a display function, then sleep mode can be considered as having a target current of 0. Restarting the drive motor after sleep mode will result in startup energy consumption.

[0052] This invention provides a power supply control method for electric clippers. The method determines the gear current of the drive motor based on the user-selected gear, sets the target current as the gear current, and starts the drive motor according to the target current. After the drive motor starts, it monitors the detection distance from the working surface of the clipper to the hair and the real-time current of the drive motor. It determines whether the real-time current stably approaches the target current. If so, it determines the starting energy consumption required for the drive motor to stabilize based on the changes in the real-time current. After the detection distance is zero for the first time, it determines the movement state of the clipper based on the changes in the detection distance. If the movement state is a moving-away state, it determines a first distance and a second distance. When the detection distance is greater than the first distance, it reduces the target current of the drive motor to reduce energy consumption, and the magnitude of the reduction in the target current increases with the increase in the detection distance. When the detection distance is greater than the second distance, it puts the drive motor into sleep mode to further reduce energy consumption. If the movement state is a moving-in state, it determines a third distance and a fourth distance. When the detection distance is less than the third distance, it increases the target current of the drive motor so that when the detection distance is equal to the fourth distance, the target current equals the gear current, and the increased energy consumption when switching to the moving-away state is minimized. This approach dynamically adjusts the target current of the electric clipper's drive motor based on the detection distance and the clipper's movement state, even when the clipper's working surface is not in contact with the hair. This achieves the goal of decreasing the target current until it enters a dormant state when the clipper is far away, and increasing the target current until it reaches the operating current when the clipper is close. Furthermore, the magnitude of the decrease in target current increases with the greater the detection distance, and the magnitude of the increase increases with the smaller the detection distance. This significantly reduces the energy consumption of the electric clipper and ensures that the energy consumption changes from the previous movement state are minimized when switching movement states, thus solving the problem of not being able to effectively reduce equipment energy consumption.

[0053] In one embodiment, determining whether the real-time current is stable and tends towards the target current includes:

[0054] Within the first preset time period after the drive motor starts, it is determined whether the real-time current exceeds the target current. If so, it is determined whether the real-time current drops back. If not, it is determined whether the real-time current exceeds the target current until the real-time current exceeds the target current.

[0055] If the real-time current drops, determine whether the real-time current is equal to the target current and remains unchanged within the second preset time period. If so, the real-time current tends to stabilize towards the target current.

[0056] If the real-time current is not equal to the target current or does not remain unchanged within the second preset time period, then continue to determine whether the real-time current is equal to the target current and remains unchanged within the second preset time period until the real-time current is equal to the target current and remains unchanged within the second preset time period.

[0057] If the real-time current does not drop, continue to check whether the real-time current drops until it does.

[0058] In this embodiment, the first preset duration can be set to 5 seconds. Generally speaking, the surge current appears and falls back within 1-2 seconds of startup. The first preset duration is to lock the startup energy consumption in the time period before the detection distance is 0 for the first time.

[0059] In this embodiment, the second preset duration can be set to 2 seconds, which is a period of time within the first preset duration.

[0060] In one embodiment, determining the starting energy consumption required for the drive motor to stabilize from startup based on real-time current changes includes:

[0061] Determine the start time of the second preset duration corresponding to the real-time current stabilization trend towards the target current, and record it as the stabilization time.

[0062] Depend on The starting energy consumption required for the drive motor to go from startup to stability is obtained;

[0063] Where U is the voltage corresponding to the gear selected by the user, t1 is the start-up time of the drive motor, and t2 is the settling-in time. This represents the real-time current that varies with time from t1 to t2.

[0064] In this embodiment, the voltage corresponding to the gear selected by the user remains constant unless the gear changes.

[0065] In this embodiment, real-time current is used so that real-time power can be obtained. The product of real-time power and time is power consumption. The startup power consumption is the product of real-time power and the time period from t1 to t2.

[0066] In this embodiment, since the real-time current changes continuously with time, an integral method is used.

[0067] In one embodiment, determining the motion state of the electric clipper based on changes in the detection distance includes:

[0068] For the latest detection distance, determine whether the detection distance has increased compared to the previous detection distance. If so, accumulate the increase.

[0069] Determine whether the increased amplitude is greater than the first preset value. If so, determine the movement state of the electric clipper as the away state and clear the cumulative decrease amplitude. If not, the movement state of the electric clipper remains unchanged.

[0070] If the detection distance is not increased compared to the previous detection distance, then determine whether the detection distance has decreased compared to the previous detection distance. If yes, then accumulate the magnitude of the decrease. If no, the motion state of the electric clipper remains unchanged.

[0071] Determine whether the decrease in amplitude is greater than the second preset value. If so, determine the movement state of the electric clipper as the approach state and clear the cumulative increase in amplitude. If not, the movement state of the electric clipper remains unchanged.

[0072] In this embodiment, the first preset value can be set to 1cm, and the accumulation of the increased amplitude starts from 0.

[0073] In this embodiment, the second preset value can be set to 1cm, and the accumulation of the reduced amplitude starts from 0.

[0074] In this embodiment, it can be understood that at least 1 cm of movement is required to potentially change the motion state.

[0075] In this embodiment, the cumulative decrease in amplitude is cleared to zero only at the moment when the state is determined to be far away, and similarly, the cumulative increase in amplitude is cleared to zero only when the state is determined to be close.

[0076] In this embodiment, keeping the motion state of the electric clipper unchanged can be understood as re-determining it to be either a moving away state or a moving closer state, while also resetting any decreasing or increasing amplitude to zero.

[0077] In one embodiment, determining the first distance and the second distance includes:

[0078] S501, for each previous remote state, by Obtain the moving speed of the electric clipper in this remote state;

[0079] S502, by The average velocity V1 is obtained;

[0080] S503, by Determine the operating power P0;

[0081] S504, by Obtain the first distance;

[0082] S505, determine the number M of all remote states whose maximum detection distance is less than the first distance, by... Obtain the distance coefficient;

[0083] S506, determine whether the distance coefficient is greater than the preset coefficient; if not, then proceed as follows: Correct the first distance;

[0084] S507, Repeat S506 until the distance coefficient is greater than the preset coefficient or the first distance is less than or equal to the preset coefficient. ;

[0085] S508, by The second distance is obtained;

[0086] Where S1 is the maximum detection distance in this far-away state, t x The time elapsed from 0 to the maximum detection distance for the remote state, where m is the number of remote states, k is the index of the remote state, and v is the distance from the maximum detection distance. 1k Let U be the moving speed of the electric clipper in the kth far-away state, U be the voltage of the gear selected by the user, I0 be the gear current, K1 be the first preset ratio (K1 < 1), K2 be the second preset ratio (K2 < 1), K3 be the third preset ratio (K3 < 1), D1 be the first distance, and Q be the starting energy consumption.

[0087] In this embodiment, m must be at least greater than 3. When in the first three far-away states, the last average velocity from the most recent historical data can be used instead. It is greater than 3 because it is necessary to prevent random data.

[0088] In this embodiment, due to The second distance is obtained, so essentially the second distance is determined before the first distance. However, since the parameters are all defined, the first and second distances can be determined simultaneously. Q is fixed, and P0 is also fixed, therefore... It is also fixed, which can be understood as if the gear circuit continues to operate. At this time, the energy consumption equals the startup power consumption, therefore... A time-based sleep mode is a suitable measure, but time alone cannot determine the movement motivation of the electric clippers; only distance detection can. Therefore, a second distance needs to be obtained by combining the average speed. The movement motivation of the electric clippers is either moving away from or towards the hair, which determines whether the target current of the clippers needs to be restored to the set current. Time alone cannot reflect whether there is a movement motivation towards or away from the hair.

[0089] In this embodiment, K1 can be set to 0.5. Theoretically, the target current can be reduced the moment the working surface of the electric clipper leaves the hair. However, if the electric clipper moves slightly away and then immediately moves closer, it is essentially unnecessary to reduce the target current. Therefore, a first distance is set. Within this first distance, the target current does not need to be reduced. The minimum value of this first distance is... K3 can be set to 0.1.

[0090] In this embodiment, the preset coefficient can be set to 0.5. If the distance coefficient is greater than the preset coefficient, it means that the number of times the distance state falls within the first distance is more, and the determination of the first distance can be considered reasonable.

[0091] In this embodiment, K2 can be set to 0.9.

[0092] In one embodiment, the step of reducing the target current of the drive motor to reduce energy consumption when the detection distance is greater than a first distance, wherein the reduction in the target current increases with the increase of the detection distance, includes:

[0093] Determine if the detection distance is greater than the first distance and less than the second distance. If so, then proceed... The first slope k1 is obtained;

[0094] Depend on The second slope k2 is obtained from The third slope k3 is obtained;

[0095] Establish a deceleration model for target current and target speed. The horizontal axis of the deceleration model represents the detection distance, and the vertical axis represents the target current.

[0096] Will , Substitute into the deceleration model and combine The coefficients a1, b1, c1, and d1 in the deceleration model are obtained.

[0097] The target current of the drive motor is reduced based on the detection distance and deceleration model to reduce energy consumption, and the reduction in target current increases with the increase of detection distance;

[0098] During the adjustment process of reducing the target current, it is determined whether the real-time current is less than the target current. If so, the real-time current is not changed until the real-time current is greater than or equal to the target current.

[0099] Where I0 is the range current, D1 is the first distance, and D2 is the second distance.

[0100] In this embodiment, the deceleration model must conform to the requirement that the magnitude of the reduction in target current in the first quadrant increases with the increase of detection distance. Therefore, the deceleration model in the first quadrant is part of a convex curve with a downward opening line. Essentially, a quadratic function, or even a more complex function such as a quartic function, could be used as the deceleration model. However, a quartic function requires 5 points to determine its parameters, while a cubic function only requires 4 points. Although a quadratic function only requires 3 points, its curvature is not as good as that of the cubic function. Therefore, choosing a cubic function is the most reasonable option.

[0101] In this embodiment, The first derivative with respect to y yields the slope of the tangent line to the curve. Because Therefore equal ,Will , Substituting into the deceleration model, we can obtain .

[0102] In this embodiment, as Figure 2 As shown, during the adjustment process of reducing the target current, under normal circumstances, the target current decreases first when the system is in a distanced state. The actual current decreases as the target current decreases, exhibiting a certain lag. Therefore, the actual current will be slightly greater than the target current. However, there is a special case: switching from a close-up state to a distanced state. In this case, the target current jumps upwards, and the actual current is now less than the target current. Since the target current should decrease in the distanced state, the real-time current does not need to be changed until the target current decreases to match the real-time current.

[0103] In one embodiment, determining the third distance and the fourth distance includes:

[0104] During the process of moving away from the target current, the detection distance corresponding to the preset percentage of the target current is determined, and this detection distance is recorded as the third distance.

[0105] Depend on The fourth distance is obtained;

[0106] Where D1 is the first distance, D2 is the second distance, and D3 is the third distance.

[0107] In this embodiment, the preset percentage can be set to 40%. The third distance is the detection distance for restarting the drive motor, which is actually less than or equal to the second distance. During the process of moving away from the target current in the deceleration model, the change in the detection distance corresponding to the 40% change in the target current in the latter half is very small. This change in detection distance can be used as a margin for the third distance and the second distance, avoiding the immediate restart of the drive motor once it falls below the second distance.

[0108] In this embodiment, the distance difference between the fourth distance and the first distance is the same as the distance difference between the third distance and the second distance.

[0109] In one embodiment, increasing the target current of the drive motor when the detection distance is less than the third distance so that the target current equals the gear current when the detection distance is equal to the fourth distance and ensures that the increased energy consumption when switching to the distance-away state is minimized includes:

[0110] Determine if the detection distance is greater than the fourth distance and less than the third distance. If so, then proceed... The fourth slope k4 is obtained;

[0111] Depend on The fifth slope k5 is obtained from... The sixth slope k6 is obtained;

[0112] Establish an acceleration model for the target current and target speed. The horizontal axis of the acceleration model represents the detection distance, and the vertical axis represents the target current.

[0113] Will , Substitute into the acceleration model and combine The coefficients a2, b2, c2, and d2 in the acceleration model are obtained.

[0114] The target current of the drive motor is increased and adjusted according to the detection distance and acceleration model so that the target current is equal to the gear current when the detection distance is equal to the fourth distance, and the increased energy consumption is minimized when switching to the far-away state.

[0115] During the process of increasing and adjusting the target current, determine whether the real-time current is greater than the target current. If so, do not change the real-time current until the real-time current is less than or equal to the target current.

[0116] Where I0 is the range current, D3 is the third distance, and D4 is the fourth distance.

[0117] In this embodiment, the acceleration model must conform to the requirement that the magnitude of the target current increase in the first quadrant increases with decreasing detection distance. Therefore, the acceleration model in the first quadrant is part of a concave curve with an upward-opening line. Essentially, a quadratic function, or even a more complex function such as a quartic function, could be used as the acceleration model. However, a quartic function requires 5 points to determine its parameters, while a cubic function only requires 4 points. Although a quadratic function only requires 3 points, its curvature is not as good as that of the cubic function. Therefore, choosing a cubic function is the most reasonable option.

[0118] In this embodiment, as Figure 2 As shown, during the adjustment process of increasing the target current, under normal circumstances, when in the far-to-near state, the target current increases first, and the actual current also increases due to the increase in the target current, exhibiting a certain lag. Therefore, the actual current will be slightly less than the target current. However, there is a special case: when switching from the far-to-near state, the target current undergoes a downward jump, and the actual current is now greater than the target current. Since the target current should increase in the near-to-near state, the real-time current does not need to be changed until the target current increases to match the real-time current.

[0119] like Figure 3 As shown, in one embodiment, a power supply control device for electric clippers is provided, which may specifically include:

[0120] The motor start module is used to determine the gear current of the electric clipper's drive motor based on the gear selected by the user, set the target current as the gear current, and start the drive motor according to the target current.

[0121] The monitoring data module is used to monitor the detection distance from the working surface of the electric clipper to the hair and the real-time current of the drive motor after the drive motor is started.

[0122] The energy consumption calculation module is used to determine whether the real-time current is stable and tending towards the target current. If so, it determines the starting energy consumption required for the drive motor to go from start-up to stability based on the changes in the real-time current.

[0123] The status determination module is used to determine the motion state of the electric clipper based on the change in the detection distance after the detection distance is 0 for the first time.

[0124] The current reduction module is used to determine a first distance and a second distance if the motion state is a distance away state. When the detected distance is greater than the first distance, the target current of the drive motor is reduced to reduce energy consumption, and the reduction magnitude of the target current increases with the increase of the detected distance. When the detected distance is greater than the second distance, the drive motor is put into sleep mode to further reduce energy consumption.

[0125] The current increase module is used to determine the third and fourth distances if the motion state is approaching. When the detected distance is less than the third distance, the target current of the drive motor is increased so that when the detected distance is equal to the fourth distance, the target current is equal to the gear current and the increased energy consumption is minimized when switching to the far-away state.

[0126] Among them, the first distance is less than the second distance, and the third distance is greater than the fourth distance.

[0127] In this embodiment, the various modules of the power supply control device for the electric clipper are modular components of the method of this invention. For a detailed explanation of each module, please refer to the corresponding content in the method section of this invention. The embodiments of this invention will not be repeated here.

[0128] like Figure 4 As shown, in one embodiment, a power supply control system for electric hair clippers is provided, which may specifically include: electric hair clippers, a first sensor module, a second sensor module, and a control module;

[0129] The first sensor module is located inside the electric hair clipper and is connected to the control module. It is used to detect the real-time current of the drive motor of the electric hair clipper.

[0130] The second sensor module is disposed on the scissor surface of the electric clipper and is connected to the control module to monitor the detection distance from the working surface of the electric clipper to the hair;

[0131] The control module is located inside the electric clipper and is used to execute the steps of the power supply control method for the electric clipper described above.

[0132] In this embodiment, the first sensor module is a high-precision Hall current sensor, such as the ACS758 current sensor.

[0133] In this embodiment, the second sensor module is an infrared sensor.

[0134] In this embodiment, the power supply control system for electric clippers also includes a voltage sensor for detecting real-time voltage, such as an LTC6101 voltage sensor.

[0135] In this embodiment, the electric hair clipper includes a power module, a blade module, and a drive motor module; the power module is electrically connected to the drive motor module and the control module, and is used to output electrical energy to the drive motor module according to the control signal of the control module; the blade module is used to perform the function of cutting hair with the electric hair clipper; the rotation shaft of the drive motor module is connected to the blade module, and is used to drive the blade module to perform the function of cutting hair with the electric hair clipper.

[0136] This invention provides a power supply control system for electric clippers. The system determines the gear current of the drive motor based on the user-selected gear, sets the target current as the gear current, and starts the drive motor according to the target current. After the drive motor starts, it monitors the detection distance from the working surface of the clipper to the hair and the real-time current of the drive motor. It determines whether the real-time current stably approaches the target current. If so, it determines the starting energy consumption required for the drive motor to stabilize based on the changes in the real-time current. After the detection distance is zero for the first time, it determines the movement state of the clipper based on the changes in the detection distance. If the movement state is a moving-away state, it determines a first distance and a second distance. When the detection distance is greater than the first distance, it reduces the target current of the drive motor to reduce energy consumption, and the magnitude of the reduction in the target current increases with the increase in the detection distance. When the detection distance is greater than the second distance, it puts the drive motor into sleep mode to further reduce energy consumption. If the movement state is a moving-in state, it determines a third distance and a fourth distance. When the detection distance is less than the third distance, it increases the target current of the drive motor so that when the detection distance is equal to the fourth distance, the target current equals the gear current, and the increased energy consumption when switching to the moving-away state is minimized. This approach dynamically adjusts the target current of the electric clipper's drive motor based on the detection distance and the clipper's movement state, even when the clipper's working surface is not in contact with the hair. This achieves the goal of decreasing the target current until it enters a dormant state when the clipper is far away, and increasing the target current until it reaches the operating current when the clipper is close. Furthermore, the magnitude of the decrease in target current increases with the greater the detection distance, and the magnitude of the increase increases with the smaller the detection distance. This significantly reduces the energy consumption of the electric clipper and ensures that the energy consumption changes from the previous movement state are minimized when switching movement states, thus solving the problem of not being able to effectively reduce equipment energy consumption.

[0137] Figure 5 An internal structural diagram of the control module in one embodiment is shown. Figure 5 As shown, the control module includes a processor, a memory, a network interface, an input device, and a display screen connected via a system bus. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium of the control module stores an operating system and may also store a computer program. When executed by the processor, this computer program enables the processor to implement a power supply control method for electric hair clippers provided in this embodiment of the invention. The internal memory may also store a computer program, which, when executed by the processor, enables the processor to execute a power supply control method for electric hair clippers provided in this embodiment of the invention.

[0138] Those skilled in the art will understand that Figure 5The structure shown is merely a block diagram of a portion of the structure related to the present invention and does not constitute a limitation on the control module to which the present invention is applied. The specific control module may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0139] In one embodiment, the power supply control device for electric hair clippers provided by this invention can be implemented as a computer program, and the computer program can be implemented in the form of, for example, Figure 5 The control module shown operates on this device. The memory of the control module can store the various program modules that make up the power supply control device for the electric hair clipper, for example, Figure 3 The diagram shows a motor start-up module, a data monitoring module, an energy consumption calculation module, a status determination module, a current reduction module, and a current increase module. The computer program comprised of these modules causes the processor to execute the steps of a power supply control method for an electric clipper according to various embodiments of the present invention described in this specification.

[0140] For example, Figure 5 The control module shown can be used as follows Figure 3 The power supply control device for electric clippers shown in the diagram executes step a via the starter motor module; step b via the monitoring data module; step c via the energy consumption calculation module; step b via the status determination module; step c via the current reduction module; and step c via the current increase module.

[0141] In one embodiment, a control module is provided, the control module including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to perform the following steps:

[0142] S101: Determine the gear current of the drive motor of the electric clipper according to the gear selected by the user, set the target current as the gear current, and start the drive motor according to the target current.

[0143] S102, after the drive motor starts, monitor the detection distance from the working surface of the electric clipper to the hair and the real-time current of the drive motor;

[0144] S103, determine whether the real-time current is stable and tends towards the target current. If so, determine the starting energy consumption required for the drive motor to go from start-up to stability based on the changes in the real-time current.

[0145] S104, after the detection distance is 0 for the first time, the motion state of the electric clipper is determined based on the change in the detection distance;

[0146] S105, if the motion state is a distance away state, then determine the first distance and the second distance. When the detection distance is greater than the first distance, reduce the target current of the drive motor to reduce energy consumption, and the reduction of the target current increases with the increase of the detection distance. When the detection distance is greater than the second distance, put the drive motor into sleep mode to further reduce energy consumption.

[0147] S106, If the motion state is approaching, then determine the third distance and the fourth distance. When the detected distance is less than the third distance, increase the target current of the drive motor so that when the detected distance is equal to the fourth distance, the target current is equal to the gear current and ensures that the energy consumption increased when switching to the far-away state is minimized.

[0148] Among them, the first distance is less than the second distance, and the third distance is greater than the fourth distance.

[0149] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, which, when executed by a processor, causes the processor to perform the following steps:

[0150] S101: Determine the gear current of the drive motor of the electric clipper according to the gear selected by the user, set the target current as the gear current, and start the drive motor according to the target current.

[0151] S102, after the drive motor starts, monitor the detection distance from the working surface of the electric clipper to the hair and the real-time current of the drive motor;

[0152] S103, determine whether the real-time current is stable and tends towards the target current. If so, determine the starting energy consumption required for the drive motor to go from start-up to stability based on the changes in the real-time current.

[0153] S104, after the detection distance is 0 for the first time, the motion state of the electric clipper is determined based on the change in the detection distance;

[0154] S105, if the motion state is a distance away state, then determine the first distance and the second distance. When the detection distance is greater than the first distance, reduce the target current of the drive motor to reduce energy consumption, and the reduction of the target current increases with the increase of the detection distance. When the detection distance is greater than the second distance, put the drive motor into sleep mode to further reduce energy consumption.

[0155] S106, If the motion state is approaching, then determine the third distance and the fourth distance. When the detected distance is less than the third distance, increase the target current of the drive motor so that when the detected distance is equal to the fourth distance, the target current is equal to the gear current and ensures that the energy consumption increased when switching to the far-away state is minimized.

[0156] Among them, the first distance is less than the second distance, and the third distance is greater than the fourth distance.

[0157] It should be understood that although the steps in the flowcharts of the various embodiments of the present invention are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the various embodiments may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least a portion of the sub-steps or stages of other steps.

[0158] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided by this invention can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0159] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0160] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A power supply control method for an electric clipper, characterized by, The power supply control method for the electric clipper comprises: S101, determining the gear current of the driving motor of the electric clipper according to the gear selected by the user, setting the target current as the gear current, and starting the driving motor according to the target current; S102, after the driving motor is started, monitoring the detection distance of the working surface of the electric clipper to the hair and the real-time current of the driving motor; S103, judging whether the real-time current is stably tending to the target current, if yes, determining the starting energy consumption required for the driving motor from starting to stabilization according to the change of the real-time current; S104, after the detection distance is 0 for the first time, determining the motion state of the electric clipper according to the change of the detection distance; S105, if the motion state is the moving-away state, determining the first distance and the second distance, reducing the target current of the driving motor to reduce the energy consumption when the detection distance is greater than the first distance, and increasing the reduction amplitude of the target current with the increase of the detection distance, and putting the driving motor to sleep to further reduce the energy consumption when the detection distance is greater than the second distance; S106, if the motion state is the moving-approaching state, determining the third distance and the fourth distance, increasing the target current of the driving motor when the detection distance is less than the third distance to make the target current equal to the gear current when the detection distance is equal to the fourth distance, and ensuring that the increased energy consumption is minimum when switching to the moving-away state; wherein the first distance is less than the second distance, and the third distance is greater than the fourth distance.

2. The power supply control method for electric hair clippers according to claim 1, characterized by, The judgment whether the real-time current is stably tending to the target current comprises: within the first preset time length after the driving motor is started, judging whether the real-time current exceeds the target current, if yes, judging whether the real-time current falls back, if no, continuously judging whether the real-time current exceeds the target current until the real-time current exceeds the target current; if the real-time current falls back, judging whether the real-time current is equal to the target current and remains unchanged within the second preset time length, if yes, the real-time current is stably tending to the target current; if the real-time current is not equal to the target current or remains unchanged within the second preset time length, continuously judging whether the real-time current is equal to the target current and remains unchanged within the second preset time length until the real-time current is equal to the target current and remains unchanged within the second preset time length; if the real-time current does not fall back, continuously judging whether the real-time current falls back until the real-time current falls back.

3. The power supply control method for electric hair clippers according to claim 2, characterized by, The determination of the starting energy consumption required for the driving motor from starting to stabilization according to the change of the real-time current comprises: determining the starting time of the second preset time length corresponding to the real-time current stably tending to the target current, which is recorded as the stabilization time; By a starting energy required to drive the motor from start-up to steady state is obtained; Wherein, U is the gear voltage corresponding to the gear selected by the user, t1 is the starting time of the driving motor, t2 is the stable time, is the real-time current changing with time within t1 to t2.

4. The power supply control method for electric hair clippers according to claim 1, characterized by, The determination of the motion state of the electric clipper according to the change of the detection distance comprises: for the latest detection distance, judging whether the detection distance is increased compared with the last detection distance, if yes, accumulating the increasing amplitude; judging whether the increasing amplitude is greater than the first preset value, if yes, determining the motion state of the electric clipper as the moving-away state and clearing the accumulated decreasing amplitude, if no, the motion state of the electric clipper remains unchanged; If the detection distance is not increased compared with the previous detection distance, it is determined whether the detection distance is decreased compared with the previous detection distance, if yes, the decreased amplitude is accumulated, if no, the motion state of the electric clipper remains unchanged; It is determined whether the decreased amplitude is greater than a second preset value, if yes, the motion state of the electric clipper is determined as the approaching state and the accumulation of the increased amplitude is cleared, if no, the motion state of the electric clipper remains unchanged.

5. The power supply control method for electric hair clippers according to claim 1, wherein The determination of the first distance and the second distance comprises: S501, for each of the previous distancing states, by obtaining the speed of movement of the electric clip for that distancing state; S502, by obtaining the average speed V1; S503, by determining the working power P0; S504, by obtaining the first distance; S505, determining the number M of all the remote states corresponding to the maximum detection distance less than the first distance, by obtaining the distance coefficient; S506, judging whether the distance coefficient is greater than a preset coefficient, if not, by correcting the first distance; S507, repeat S506 until the distance coefficient is greater than a preset coefficient or the first distance is less than or equal to ; S508, by obtaining a second distance; Wherein, S1 is the maximum detection distance of the far-off state, t x is the time taken by the detection distance of the far-off state from 0 to the maximum detection distance, m is the number of the far-off state, k is the serial number of the far-off state, v 1k is the moving speed of the electric clip in the kth far-off state, U is the gear voltage corresponding to the gear selected by the user, I0 is the gear current, K1 is the first preset ratio, K1 is less than 1, K2 is the second preset ratio, K2 is less than 1, K3 is the third preset ratio, K3 is less than 1, D1 is the first distance, and Q is the starting energy consumption.

6. The power supply control method for electric hair clippers according to claim 1, wherein The decreasing of the target current of the driving motor when the detection distance is greater than the first distance to reduce the energy consumption and the decreasing amplitude of the target current increases with the increase of the detection distance comprises: determining whether the detection distance is greater than the first distance and less than the second distance, and if so, determining the first distance as the detection distance obtaining the first slope k1; obtained from a second slope k2, obtained from a third slope k3; A deceleration model of the target current and the target rotating speed is established , a horizontal axis of the deceleration model is a detection distance, and a vertical axis is a target current; Will , Substitute into the deceleration model and combine The coefficients a1, b1, c1, and d1 in the deceleration model are obtained. The target current of the driving motor is adjusted according to the detection distance and the deceleration model to reduce the energy consumption and the decreasing amplitude of the target current increases with the increase of the detection distance; During the target current adjustment, it is determined whether the real-time current is less than the target current, if yes, the real-time current is not changed until the real-time current is greater than or equal to the target current; Wherein, I0 is the gear current, D1 is the first distance, and D2 is the second distance.

7. The power supply control method for electric hair clippers according to claim 1, wherein The determination of the third distance and the fourth distance comprises: During the motion state is the away state, the detection distance corresponding to the target current of the preset proportion is determined, and the detection distance is recorded as the third distance; obtaining a fourth distance;​ Wherein, D1 is the first distance, D2 is the second distance, and D3 is the third distance.

8. The power supply control method for electric hair clippers according to claim 1, wherein The increasing of the target current of the driving motor when the detection distance is less than the third distance to make the target current equal to the gear current when the detection distance is equal to the fourth distance and ensure that the increased energy consumption is minimum when the away state is switched comprises: determining whether the detection distance is greater than the fourth distance and less than the third distance, and if so, determining the fourth distance as the detection distance obtaining a fourth slope k4; from a fifth slope k5 is obtained from a sixth slope k6 is obtained from An acceleration model of target current and target rotating speed is established , wherein the horizontal axis of the acceleration model is detection distance, and the vertical axis is target current; Will , Substitute into the acceleration model and combine The coefficients a2, b2, c2, and d2 in the acceleration model are obtained. The target current of the driving motor is adjusted according to the detection distance and the acceleration model to make the target current equal to the gear current when the detection distance is equal to the fourth distance and ensure that the increased energy consumption is minimum when the away state is switched; During the target current adjustment, it is determined whether the real-time current is greater than the target current, if yes, the real-time current is not changed until the real-time current is less than or equal to the target current; Wherein, I0 is the gear current, D3 is the third distance, and D4 is the fourth distance.

9. A power supply control device for an electric clipper, characterized by comprising: The power supply control device for the electric clipper comprises: The starting motor module is used for determining the gear current of the driving motor of the electric clipper according to the gear selected by the user, setting the target current as the gear current, and starting the driving motor according to the target current; The monitoring data module is used for monitoring the detection distance of the working surface of the electric clipper to the hair and the real-time current of the driving motor after the driving motor is started; The calculation energy consumption module is used for determining whether the real-time current is stably tending to the target current, if yes, determining the starting energy consumption required for the driving motor from starting to stabilization according to the change of the real-time current; The determination state module is used for determining the motion state of the electric clipper according to the change of the detection distance after the detection distance is 0 for the first time; The starting motor module is used for determining the gear current of the driving motor of the electric clipper according to the gear selected by the user, setting the target current as the gear current, and starting the driving motor according to the target current; The current reducing module is configured to, if the motion state is the far state, determine a first distance and a second distance, reduce the target current of the driving motor to reduce the energy consumption when the detection distance is greater than the first distance, and increase the reduction amplitude of the target current with the increase of the detection distance, and put the driving motor into hibernation to further reduce the energy consumption when the detection distance is greater than the second distance; The current increasing module is configured to, if the motion state is the close state, determine a third distance and a fourth distance, increase the target current of the driving motor to make the target current equal to the gear current when the detection distance is equal to the fourth distance and ensure that the increased energy consumption is minimum when the switching is the far state, when the detection distance is less than the third distance. The first distance is less than the second distance, and the third distance is greater than the fourth distance.

10. A power supply control system for an electric clipper, characterized by, The power supply control system for the electric clipper includes an electric clipper, a first sensor module, a second sensor module, and a control module. The first sensor module is arranged in the electric clipper and connected to the control module, and is configured to detect the real-time current of the driving motor of the electric clipper. The second sensor module is arranged on the scissor surface of the electric clipper and connected to the control module, and is configured to monitor the detection distance from the working surface of the electric clipper to the hair. The control module is arranged in the electric clipper and is configured to execute the steps of the power supply control method for the electric clipper in any one of claims 1 to 8.

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