A GREY HAIR REMOVAL COMPONENT, HAIR COMB AND SYSTEM

Abstract

The disclosure provides a grey hair removal component, and a grey hair removal comb and a grey hair removal system composed of several grey hair removal components. The grey hair removal component includes at least one housing, and at least one identification unit and a grey hair removal unit arranged within the housing (0), and further includes a sensing unit arranged at an end of the housing, and the sensing unit responds to the contact of the component with a scalp and outputs a start signal; the identification unit identifies a grey hair in response to the start signal and outputs a removal signal; and the grey hair removal unit removes the identified grey hair based on the removal signal. By means of using the grey hair removal component and the grey hair removal system to scan the surface of the entire scalp (9), the aims of removing all grey hair and leaving colored hair can be achieved, and enhancing the personal appearance of a user.

Claims

1. A grey hair removal component comprising at least one housing and at least one identification unit and a grey hair removal unit arranged in the housing, the component further comprising: a sensing unit arranged at a first end of the housing, wherein the sensing unit responds to contact of the component with scalp and outputs a start signal; wherein each identification unit, in response to the start signal, identifies a grey hair, outputting a removal signal; and the grey hair removal unit removes the identified grey hair based on the removal signal.

2. The grey hair removal component according to claim 1, wherein the housing is provided with windows at a side wall close to the first end of the housing; and each identification unit is configured to identify the grey hair through its window, and the grey hair removal unit is configured to remove the identified grey hair through its window.

3. The grey hair removal component according to claim 1, wherein each identification unit includes a light source module, an information collection module, and an identification module.

4. The grey hair removal component according to claim 3, wherein each identification module comprises one or both of a hair color identification module and a shape identification module.

5. The grey hair removal component according to claim 1, wherein the grey hair removal unit includes an energy emission module and a focusing module, wherein the energy emission module includes a combination of one or more of light, electrical, magnetic, sound, and thermal energy emission modules.

6. The grey hair removal component according to claim 1, wherein the grey hair removal unit further comprises a drive unit and a removal actuator, the drive unit driving the removal actuator to protrude from its window or be kept in the housing.

7. The grey hair removal component according to claim 6, wherein the driving unit comprises a driving module which is an electrostatic driver, an electromagnetic driver, a piezoelectric driver or an inverse piezoelectric driver.

8. The grey hair removal component according to claim 1, wherein the grey hair removal unit comprises a blade that translates or rotates.

9. The grey hair removal component according to claim 1, wherein the grey hair removal unit further comprises a pulse generating unit for generating voltage pulses and a microneedle for applying the pulses.

10. The grey hair removal component according to claim 2, wherein each identification unit includes a first light source, an optical element, and a spectral sensor and/or an image sensor, wherein the optical element is arranged to reflect the light emitted by the light source out of its window, and the light from the window is reflected to the spectral sensor or the image sensor.

11. The grey hair removal component according to claim 10, wherein the grey hair removal unit further comprises a second light source and a focusing lens which focuses the light generated by the second light source to the identified grey hair to remove the grey hair.

12. The grey hair removal component according to claim 10, wherein the grey hair removal unit further comprises a pulse generating unit that generates pulses in response to the removal signal to enable the first light source to output a light beam with an intensity for removing the grey hair.

13. The grey hair removal component according to claim 1, wherein the grey hair removal component comprises a plurality of identification units arranged in the same housing or arranged in adjacent housings.

14. The grey hair removal component according to claim 1, wherein the sensing unit is one or more of a contact switch, a pressure sensor, a heat inductor, an infrared sensor, a resistance detector, a capacitance detector, an electromagnetic inductor, or a sound wave recognizer.

15. The grey hair removal component according to claim 2, wherein a flexible or elastic sealing material is arranged at the window of the housing.

16. A grey hair removal component, wherein the component includes a housing, one or more identification unit, and a grey hair removal unit arranged in the housing, wherein the grey hair removal unit includes a piezoelectric driver or an inverse piezoelectric driver, one end of which is fixed to the housing, and the other end of which is fixed with a blade or fixed with the blade via a lever.

17. A grey hair removal comb, comprising: a body and at least one grey hair removal comb finger, wherein the grey hair removal comb finger comprises a grey hair removal component comprising at least one housing and at least one identification unit and a grey hair removal unit arranged in the housing, the component further comprising: a sensing unit arranged at a first end of the housing, wherein the sensing unit responds to contact of the component with scalp and outputs a start signal; wherein each identification unit, in response to the start signal, identifies a grey hair, outputting a removal signal; and the grey hair removal unit removes the identified grey hair based on the removal signal.

18-20. (canceled)

21. The grey hair removal comb according to claim 17, wherein the grey hair removal comb further comprises a plurality of conventional comb fingers which are arranged at intervals with the grey hair removal comb fingers.

22. A digital control grey hair removal system, comprising: a controlled robotic arm; a digital control subsystem used to control scanning speed and direction of the robotic arm; and a grey hair removal component comprising at least one housing and at least one identification unit and a grey hair removal unit arranged in the housing, the component further comprising: a sensing unit arranged at a first end of the housing, wherein the sensing unit responds to contact of the component with scalp and outputs a start signal; wherein each identification unit, in response to the start signal, identifies a grey hair, outputting a removal signal; and the grey hair removal unit removes the identified grey hair based on the removal signal, wherein the grey hair removal component is arranged on the robotic arm.

23-26. (canceled)

27. A digital control grey hair removal method, wherein the grey hair removal component according to claim 1 is used, a dataset of three-dimensional coordinates of the entire scalp surface is obtained by sensing the scalp with digital positioning or scanning, and the at least one identification unit and the removal unit respectively distinguish hair color and remove grey hair by using the dataset of three-dimensional coordinate data as digital scan coordinates.

28-32. (canceled)

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0094] The embodiments of the present disclosure will be described in further detail below in conjunction with the figure;

[0095] FIG. 1 shows a schematic diagram of the grey hair removal process;

[0096] FIG. 2 shows a schematic diagram of a grey hair removal component according to a first embodiment of the present disclosure;

[0097] FIG. 3a-3c show schematic diagrams of grey hair removal components according to a second embodiment of the present disclosure;

[0098] FIG. 4a-4h show schematic diagrams of grey hair removal components according to a third embodiment of the present disclosure;

[0099] FIG. 5a-5d show schematic diagrams of grey hair removal components according to a fourth embodiment of the present disclosure;

[0100] FIG. 6a-6b show schematic diagrams of grey hair removal components according to a fifth embodiment of the present disclosure;

[0101] FIG. 7 shows a schematic diagram of a grey hair removal comb according to a sixth embodiment of the present disclosure;

[0102] FIG. 8 shows a schematic diagram of a grey hair removal comb according to a seventh embodiment of the present disclosure;

[0103] FIG. 9 shows a schematic diagram of a grey hair removal comb according to an eighth embodiment of the present disclosure; and

[0104] FIG. 10 shows a schematic diagram of a digital control grey hair removal system according to a ninth embodiment of the present disclosure.

DETAILED DESCRIPTION OF THE DISCLOSURE

[0105] In order to explain the present disclosure more clearly, the present disclosure is further described below in combination with preferred embodiments and the figure. Similar components in the figures are denoted by the same reference numerals. The content described below is illustrative rather than restrictive, and should not be used to limit the protection scope of the present disclosure.

[0106] Hereinafter, a preferred embodiment of the grey hair removal component according to the present disclosure will be described in detail with reference to FIGS. 1 to 4. The present disclosure is a grey hair removal component including a housing 0, a sensing unit 1 arranged at the end of the housing, an identification unit 2 and a grey hair removal unit 3 arranged in the housing (as shown in FIG. 2, each unit in the figure is illustrative, not expressing their shapes or mutual positional relationships), and window(s) (not shown) arranged on the side wall near the end of the housing. The window(s) may be an opening formed on the side wall (including the side end), or a window(s) may be formed at the opening. The sensing unit of the grey hair removal component of the present disclosure located at the end of the housing outputs a start signal when it contacts the scalp. Each identification unit includes a light source module, an information correction module, and an identification module. The identification unit responds to the start signal, the light emitted by the light source module illuminates the operation micro-area through the light path and the window on the housing, the collection module collects the reflected light from the operation micro-area and transmits it to the information collection module through the light path, and the identification module identify the image or spectrum from the information collection module, determine whether the determined object is a grey hair, and output a removal signal when a grey hair is identified. The grey hair removal unit removes the identified grey hair based on the removal signal. By combing or scanning the entire scalp surface, the grey hair on the user's head can be removed from its root, leaving the colored hair. FIG. 1 shows a flow chart in the case where a control unit is to control the automatic scanning via the grey hair removal component.

[0107] The following examples illustrate the units of the grey hair removal component and the grey hair removal system combined by the grey hair removal component.

First Embodiment: Sensing Unit

[0108] FIG. 2 shows a grey hair removal component including a sensing unit 1 according to the present disclosure. The sensing unit is one or more of a contact switch, a pressure sensor, a thermal inductor, an infrared sensor, a resistance detector, a capacitance detector, an electromagnetic inductor, or a sound wave recognizer.

[0109] In a one embodiment, a pressure-sensing sensing unit is used. The pressure sensor 1 housed in the housing 0 is used to sense the pressure when the component is in contact with the scalp 9. When the pressure sensor 1 is in contact with the scalp 9, the pressure increases. When the pressure is greater than a set value, outputting a start signal. The grey hair removal component starts to identify a hair 6.

[0110] In another embodiment, a contact switch sensing unit is used. The sensing unit may include a movable member and a normally opened switch. When the grey hair removal component is in contact with the scalp 9, the movable member moves upward, closes the normally open switch, and outputs a start signal. The grey hair removal component starts to identify the hair 6.

Second Embodiment: Identification Unit

[0111] The identification unit in the grey hair removal component of the present disclosure includes a light source, an information collection module and an identification module. FIGS. 3a-3c show schematic diagrams of grey hair removal components including an identification unit according to a second embodiment of the present disclosure.

[0112] In the embodiment shown in FIG. 3a, the signal correction module employs traditional microscopy technology, and the end of the housing is drawn with a semi-cone and semi-square end head as an example. In the identification unit of the component 10, the white light emitted by the light source 11 is reflected by the reflector 13 and illuminates the hair root 6 on the scalp surface 9 from the side window of the housing, the light reflected by the hair 6 enters the information collection module, for example, a CCD image sensor 19, through the reflector 13, and the focusing lens 14 and the identification module identify a grey hair based on collected optical data information for the operation micro-area.

[0113] Continuing to refer to FIG. 3a, in another embodiment, traditional microscopy technology is employed for the signal correction module. In the identification unit of the component 10, the light emitted by the light source 11 illuminates the root of the hair 6 in the scalp surface 9 from the side, the light reflected by the hair or fluorescence passes through a reflecting lens 13, a focusing lens 14, and a filter 18, and then enters the information collection module such as a detector 19, which detects the light intensity. The identification module identifies a grey hair according to the light intensity. If the intensity is higher than a predetermined intensity, a grey hair is determined, and if the intensity is lower than the predetermined intensity, a colored hair is determined or no hair is in the operation micro-area.

[0114] In the preferred embodiment with reference to FIG. 3b, the signal correction module employs non-microscopic technology and is drawn with a tapered end head as an example. A small light source 21, a filter 28 and a detector 29 are directly arranged at the bottom area of the component 20. The light emitted by the light source 21 illuminates the hair root 6 on the scalp surface 9 from the side, and the reflected light of the hair 6 or fluorescence passes through the filter 28 and enters the detector 29, and the identification module identifies the grey hair according to the detected light intensity.

[0115] In the embodiment with reference to FIG. 3c, the signal correction module employs confocal microscopy technology and is drawn with a square end head as an example. In the component 30, the light emitted by a purple light source 31 passes through the transflective dichroic lens 32, illuminates the root of the hair 6 on the scalp surface 9 from the side, the fluorescent light emitted by the hair 6 passes through the focusing lens 34 and the reflecting lens 33 (the sequence of the two can be interchanged), and then the fluorescent light reflected by the dichroic lens 32 passes through a reflecting lens 35, a focusing lens 36, a small hole 37 and a filter 38, and finally enters a detector 39 which detects the fluorescence intensity, and the identification module identifies the grey hair according to the fluorescence intensity.

Third Embodiment: Grey Hair Removal Unit

[0116] The grey hair removal unit in the grey hair removal component of the present disclosure employs a combination of one or more of light energy removal, force removal, electrical energy removal, magnetic energy removal, sound energy removal, or thermal energy removal to remove the identified grey hair. FIGS. 4a-4h show schematic diagrams of grey hair removal components including grey hair removal units according to a third embodiment of the present disclosure.

[0117] In the embodiment with reference to FIGS. 4a and 4b, when the removal unit in the component 40 receives the removal signal sent by the identification unit, a microneedle electrode 49 is driven by an electromagnet or a piezoelectric body 41 such as a stack multilayer piezo actuator and is drawn by a square end head as an example, and the microneedle electrode penetrates into the scalp 9 through the window. A puncture depth is 1˜mm into the hair follicle of grey hair 8. Applying a voltage pulse to the microneedle electrode 49 can permanently destroy the hair follicle of the grey hair 8. The voltage pulse generated by the pulse generating unit is applied to the microneedle electrode 49 through a wire 43, as shown in FIG. 4b, the portion of the microneedle electrode 49 above the scalp is protected by an insulator 44. The flexible sealing material 47 is arranged near the side bottom window of the module 40 to prevent fine particles such as hair, dandruff and dust from entering the module 40.

[0118] In the embodiment with reference to FIG. 4c, when the removal unit in the component 50 receives the removal signal sent by the identification unit, a high-power laser light source 51 generates light pulses at a high-intensity, and the light energy is focused to the root of the grey hair 8 by using a focusing lens, such as a concave lens 53, to cut off the grey hair 8 at the focal point (as shown in FIG. 4c, drawn with a tapered end head as an example).

[0119] In another embodiment with reference to FIG. 4c, when the removal unit in the component 50 receives the removal signal sent by the identification unit, the light source 51 generates a light pulse at a high-intensity, which is focused to the root of the grey hair 8 by a concave lens 53. At the same time, an electrode 59 releases an RF electrical pulse (the ground electrode is the wall surface of the adjacent cell, not shown). Light energy and electric energy operate together to cut off the grey hair 8 on the scalp surface 9.

[0120] In the embodiment with reference to FIGS. 4d and 4e, when the removal unit of the component 60 receives the electrical pulse sent by the identification unit, a micro stepping motor 61 drives a cutter rod 66 to rotate in a semicircle, which is drawn with a square end head as an example. The distal end of the rod 66 is supported by a bearing 62, and a blade 68 fixed on the cutter rod 66 cuts off the grey hair 8 on the scalp surface 9 during rotation (a rotation direction 63, as shown in FIG. 4e). The sealing material 67 is fixed to the side bottom of the housing of the removal unit 60.

[0121] In the embodiment with reference to FIG. 4f, when a removal unit of a component 70 receives the removal signal sent by the identification unit, an electromagnet or piezoelectric body 71, such as a stack multilayer piezo actuator, is triggered to operate, and drive a lever 76 fixed by a fulcrum 72 to move toward the right. A blade 78 is wrapped by an elastic sealing material 77 except for the tip of the blade, and the lever 76 pushes the blade 78 to move to the right through the window to cut the grey hair 8 on the scalp surface 9 (as shown in FIG. 4f, a square end head is drawn as an example). Subsequently, the elastic sealing material 77 rebounds to drive the lever 76 and the blade 78 to reset. The elastic sealing material 77 is tightly sealed against the housing at the bottom of the side of the removal unit 70.

[0122] In the embodiment with reference to FIG. 4g, when a removal unit of a component 80 receives the removal signal sent by the identification unit, an electromagnet or piezoelectric body 81, such as a stack multilayer piezo actuator, is triggered to start operation, the top end is moved down to drive the flexible blade 88 to turn under the guide groove 82 or the housing of the removal unit 80 (as shown in FIG. 4g, drawn with a semi-conical and semi-square end head as an example), and the blade 88 quickly moves to the right and cuts the grey hair through the window 8. Then the electromagnet or piezoelectric actuator 81 drives the blade 88 to reset. The flexible sealing material 87 is arranged on the side bottom of the removal unit 80.

[0123] In the embodiment with reference to FIG. 4h, when the removal unit of the component 90 receives the electrical pulse sent by the identification unit, the piezoelectric body 91, such as the piezoelectric bending actuator, fixed by the fixing material 92, is triggered to bend to the right under the voltage (as shown in FIG. 4h, drawn with a square end head as an example), and the lower end is displaced to directly drive the blade 98 to move to the right. The blade 98 cuts off the grey hair 8 after being squeezed against the adjacent housing through the window. Subsequently, the piezoelectric actuator 91 drives the blade 98 to reset. The flexible sealing material 97 is arranged at the side bottom to seal the removal unit 90.

Fourth Embodiment: Grey Hair Removal Component

[0124] The grey hair removal component of the present disclosure includes a sensing unit, at least one identification unit and a grey hair removal unit. FIGS. 5a-5d show schematic diagrams of the arrangement positions of the units in the grey hair removal component according to the fourth embodiment of the present disclosure.

[0125] In the preferred embodiment with reference to FIG. 5a, a sensing unit 101, an identification unit 102, and a removal unit 106 are arranged at the end of the grey hair removal component 100, and the identification unit 102 and the removal unit 106 point to the same operation micro-area. When the grey hair 8 is found, the removal unit 106 is driven to cut off the grey hair 8 from the root through the window.

[0126] In the embodiment with reference to FIG. 5b, the sensing unit 101, the identification unit 103, and the removal unit 106 are arranged at the end of the grey hair removal component 110, and the identification unit 102 and the removal unit 106 point to different operation micro-regions. When the grey hair removal component 110 moves forward at a constant speed (a movement direction 107), the identification unit 103 identifies a grey hair 8′ in the operation micro-area, and the removal unit 106 responds after a preset delay time, and the relative position of the grey hair 8′ at this time is the position where the grey hair 8 facing the removal unit 106, and the removal unit 106 removes the hair through the window.

[0127] In the embodiment with reference to FIG. 5c, the sensing unit 101, the removal unit 106, and the identification unit 104 are arranged at the end of the housing of the grey hair removal component 120, and the identification unit 105 is arranged at the end of the opposite housing, that is, being located in the housing of the grey hair removal component 120′. When the identification unit 104 or 105 finds the grey hair 8, the removal unit 106 is driven to cut off the grey hair 8.

[0128] In the embodiment with reference to FIG. 5d, the sensing unit 101 is arranged at the end of the grey hair removal component 130, the identification unit and the removal unit share a focusing lens 107, low-intensity light is used for identification, and when the grey hair 8 is found, the light intensity of the light source (not shown) is increased to cut off the grey hair 8.

Fifth Embodiment: Grey Hair Removal Components

[0129] FIGS. 6a-6b show schematic diagrams of the shapes of the end of the housing in the grey hair removal component according to the fifth embodiment of the present disclosure. In the embodiment with reference to FIG. 6a, the end of the grey hair removal component is a square end head 140 which contacts the scalp across a large area and has a larger space at the bottom. The identification unit (not shown) and the removal unit 148 are arranged closer to the scalp 9, and the residual roots of the grey hair 8 are shorter after removal. With the square end head, only the grey hair 8 beside the component 140 is removed, while the grey hair 145 in the scalp area covered by the component 140 itself cannot be removed.

[0130] According to the design of the grey hair removal component, the end head 140 is the operation area of each unit, and is basically perpendicular to the scalp surface 9 during operation. The portion above the end head is usually perpendicular to the scalp, but it is possible to have an angle a between the upper portion 141 of the end head and the vertical line 142 of the scalp surface, as shown in FIG. 6a.

[0131] In the embodiment with reference to FIG. 6b, the end of the grey hair removal component is a tapered end head 150 which allows all hairs to be arranged on both sides of the end head 150 and to be not covered by the end head 150. Due to a small portion of the tapered end head directly contacting the scalp, the identification unit (not shown) and the removal unit 158 are usually only arranged relatively far from the scalp 9, so the residual roots of the grey hair 8 after removal are longer than that with a square end head.

Sixth Embodiment: Grey Hair Removal Comb

[0132] The sixth embodiment of the present disclosure shows a grey hair removal comb 200 including a body 208 and comb fingers 202, and at least one comb finger is the grey hair removal component as described above. Using the grey hair removal comb of the present disclosure, grey hair can be removed while combing the hair daily, leaving behind only colored hair.

[0133] According to one embodiment of the present disclosure, the grey hair removal components 202 has the upper portion of the housing wider than the lower portion, and are connected in parallel to form a grey hair removal comb 200, as shown in FIG. 7. Each grey hair removal component 202 is a comb finger of the grey hair removal comb 200, and the lower ends of the comb fingers are aligned.

[0134] For example, each grey hair removal component 202 includes a sensing unit 0 as shown in FIG. 2, an identification unit 10 as shown in FIG. 3a (the lower end is changed to a square end head), and a removal unit 90 as shown in FIG. 4h. The comb finger 204 at the far side of the grey hair removal comb 200 does not contain any operation unit.

[0135] The grey hair removal comb is powered by a power supply module (not shown), which is arranged in the body, also called as the comb backbone 208, and introduced from the upper dashed area of each grey hair removal component 202 to supply power to the grey hair removal component 202.

Seventh Embodiment: Grey Hair Removal Comb

[0136] According to another embodiment of the present disclosure, the grey hair removal comb 210 includes parallel grey hair removal components 212 as comb fingers thereof, as shown in FIG. 8. Each comb finger 212 is bent at its lower end, and the surfaces of the lower ends of all comb fingers are on a plane. The gap 214 between the comb fingers at the end surface (the scalp surface when in use) is the width of the operation micro-area, the spacing between the comb fingers is enlarged at the upper width 216, so that the rest of the hair (including the grey hair not on the scalp surface) can smoothly pass through the grey hair removal comb 210. The grey hair removal comb 210 is powered by a battery (not shown) arranged in a handle 218, for example.

Eighth Embodiment: Grey Hair Removal Comb

[0137] According to another embodiment of the present disclosure, the grey hair removal comb 230 includes comb fingers 231 with square end heads and comb fingers 232 with tapered end heads, as shown in FIG. 9. The comb fingers 232 with the tapered end heads have a small width, with no grey hair removal unit arranged inside, but the removal units 235 and 237 are arranged, on both sides thereof, in the comb fingers 233 and 231 with the square ends respectively. The two comb fingers 233 and 234 at both edges of the grey hair removal comb 230 only need one removal unit, namely removal units 235 and 236, respectively. The remaining comb finger 231 with the square end heads contain two removal units 237 and 238 which are staggered back and forth along the scanning direction, and performing cutting respectively toward the left (for 237) and the right (for 238) to cut off grey hair during operation.

Ninth Embodiment: Digital Control Grey Hair Removal System

[0138] The tenth embodiment of the present disclosure provides a digital control grey hair removal system including a controlled robotic arm and at least one grey hair removal component as described above arranged on the robotic arm. Combining the grey hair removal component with the robotic arm can realize automatic and efficient removal of a grey hair.

[0139] According to a preferred embodiment of the present disclosure, grey hair removal components or a grey hair removal comb 310 can be connected to the robotic arm body 300 having 3 to 6 degrees of freedom, each of which is achieved by an independently driven joint 350, as shown in FIG. 10.

[0140] According to a embodiment of the present disclosure, the system includes a digital control subsystem used to control the robotic arm to scan at a determined speed and direction and to implement a grey hair removal process shown in FIG. 1.

[0141] In one embodiment, the digital control subsystem further drives the movement of each grey hair removal component based on the signal from the sensing unit in the grey hair removal component, so that the end of each grey hair removal component is in contact with the scalp to perform grey hair identification and removal.

[0142] According to a embodiment of the present disclosure, based on the actual position data of the user's scalp 399 and the actual position data of the grey hair removal component or the grey hair removal comb 310, the digital control subsystem 330 generates a posture control signal for the robotic arm body and control signals for the scanning area and direction of the grey hair removal comb. Based on the signals, the robotic arm body 300 drives the grey hair removal component or the grey hair removal comb 310 to scan the scalp 399 to remove the grey hair. During scanning, the grey hair removal component or grey hair removal comb 310 is kept at a large angle relative to the scalp 399.

[0143] Before starting to remove grey hair, a positioners 320 is fixed at the user's head 999. The positioner 320 includes three signal transmitting/receiving points 321, 322, and 323 to realize the positioning of the head 999. The positioner 320 is fixed at the nose, cheekbones, zygomatic arch, and ear regions of the user's head. Three signal transmitting/receiving points 311, 312, and 313 are fixed at the grey hair removal component or grey hair removal comb 310.

[0144] A signal transmitting/receiving base point (not shown) is fixed on a wall to determine the actual position data of the head 999 and the grey hair removal component or the grey hair removal comb 310. Signal communication between all signal transmitting/receiving points and the signal transmitting/receiving base point is performed by using electromagnetic waves, and the position data is determined according to the direction, intensity and phase of the electromagnetic waves. The position data is used to correct the position of the robotic arm body 300. When the position of the head 999 changes too much, a rescan signal can also be sent.

[0145] The only thing contact with the scalp 399 is the grey hair removal component or the grey hair removal comb 310 which is connected to the robotic arm body 300 by a movable connector 307. When the grey hair removal component or the grey hair removal comb 310 is entangled or wrapped with the hair, it is disconnected from the robotic arm body 300. The grey hair removal component or the grey hair removal comb 310 is powered by the robotic arm body 300. The robotic arm body 300 stops when it encounters resistance. A camera (not shown) is arranged on the robotic arm body 300, and an emergency power-off button (not shown) is installed for the entire system.

[0146] According to another embodiment of the present disclosure, the digital control grey hair removal system can employ two robotic arms 300 and 340. The robotic arm body 340 is connected to the comb 342 for combing the hair 397. According to the actual position data of the comb 342, the digital control subsystem 330 sends a signal to command the robotic arm 340 to cooperate with the robotic arm 300 to remove grey hair. Signal communication between the signal transmitting/receiving point 344 of the comb 342 and the signal transmitting/receiving base point is performed by electromagnetic waves.

[0147] According to another embodiment of the present disclosure, the grey hair removal unit and the identification unit of the grey hair removal component are used separately, the robotic arm 300 drives movement of the grey hair removal component, and the identification unit therein performs scanning and records three-dimensional coordinates of all grey hairs on the scalp surface, which then are input into the digital control subsystem 330, the digital control subsystem 330 commands the robotic arm to drive movement of the grey hair removal component, and the removal unit therein removes the grey hairs at the known coordinates.

[0148] According to another embodiment of the present disclosure, the embodiment enables permanent removal of a grey hair. The grey hair removal component or the grey hair removal comb 310 controlled by the digital control subsystem 330 pauses for a few seconds at each grey hair growth point, allowing the grey hair removal unit 50 as in embodiment 7 contained by the grey hair removal component or the grey hair removal comb 310 to destroy a grey hair follicle.